Merge "Fix Missing Screen Density" into gingerbread
diff --git a/apps/CtsVerifier/Android.mk b/apps/CtsVerifier/Android.mk
index 112b1bf..1a77577 100644
--- a/apps/CtsVerifier/Android.mk
+++ b/apps/CtsVerifier/Android.mk
@@ -25,7 +25,7 @@
LOCAL_PACKAGE_NAME := CtsVerifier
-LOCAL_JNI_SHARED_LIBRARIES := libctsverifier_jni
+LOCAL_JNI_SHARED_LIBRARIES := libctsverifier_jni libaudioquality
LOCAL_SDK_VERSION := current
diff --git a/apps/CtsVerifier/AndroidManifest.xml b/apps/CtsVerifier/AndroidManifest.xml
index 5577f38..d5a1c84 100644
--- a/apps/CtsVerifier/AndroidManifest.xml
+++ b/apps/CtsVerifier/AndroidManifest.xml
@@ -21,6 +21,9 @@
android:versionName="1.0">
<uses-sdk android:minSdkVersion="5"></uses-sdk>
+
+ <uses-permission android:name="android.permission.WAKE_LOCK" />
+ <uses-permission android:name="android.permission.RECORD_AUDIO" />
<application android:label="@string/app_name">
@@ -71,5 +74,26 @@
</intent-filter>
<meta-data android:name="test_category" android:value="@string/test_category_sensors" />
</activity>
- </application>
+
+ <activity android:name=".audioquality.AudioQualityVerifierActivity"
+ android:label="@string/aq_verifier"
+ android:launchMode="singleTask"
+ android:screenOrientation="portrait">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+ <category android:name="android.cts.intent.category.MANUAL_TEST" />
+ </intent-filter>
+ <meta-data android:name="test_category" android:value="@string/test_category_audio" />
+ </activity>
+
+ <activity android:name=".audioquality.CalibrateVolumeActivity"
+ android:label="@string/aq_calibrate_volume_name" />
+
+ <activity android:name=".audioquality.ViewResultsActivity"
+ android:label="@string/aq_view_results_name" />
+
+ <service android:name=".audioquality.ExperimentService" />
+
+ </application>
+
</manifest>
diff --git a/apps/CtsVerifier/assets/audioquality/pink_10000_3s b/apps/CtsVerifier/assets/audioquality/pink_10000_3s
new file mode 100644
index 0000000..e248a50
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/pink_10000_3s
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/pink_5000_1s b/apps/CtsVerifier/assets/audioquality/pink_5000_1s
new file mode 100644
index 0000000..6d88505
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/pink_5000_1s
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/pink_5000_2s b/apps/CtsVerifier/assets/audioquality/pink_5000_2s
new file mode 100644
index 0000000..4acb0ca
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/pink_5000_2s
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_1 b/apps/CtsVerifier/assets/audioquality/stim_dt_1
new file mode 100644
index 0000000..65830bd
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_1
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_2 b/apps/CtsVerifier/assets/audioquality/stim_dt_2
new file mode 100644
index 0000000..c61e7c8
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_2
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_3 b/apps/CtsVerifier/assets/audioquality/stim_dt_3
new file mode 100644
index 0000000..be5f755
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_3
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_31 b/apps/CtsVerifier/assets/audioquality/stim_dt_31
new file mode 100644
index 0000000..8ff5b20
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_31
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_4 b/apps/CtsVerifier/assets/audioquality/stim_dt_4
new file mode 100644
index 0000000..a9c0497
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_4
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_5 b/apps/CtsVerifier/assets/audioquality/stim_dt_5
new file mode 100644
index 0000000..73c2777
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_5
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_6 b/apps/CtsVerifier/assets/audioquality/stim_dt_6
new file mode 100644
index 0000000..381c79a
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_6
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_66 b/apps/CtsVerifier/assets/audioquality/stim_dt_66
new file mode 100644
index 0000000..84964ec
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_66
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_7 b/apps/CtsVerifier/assets/audioquality/stim_dt_7
new file mode 100644
index 0000000..c304764
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_7
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_8 b/apps/CtsVerifier/assets/audioquality/stim_dt_8
new file mode 100644
index 0000000..7479f34
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_8
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/stim_dt_9 b/apps/CtsVerifier/assets/audioquality/stim_dt_9
new file mode 100644
index 0000000..02f5276
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/stim_dt_9
Binary files differ
diff --git a/apps/CtsVerifier/assets/audioquality/tone_250 b/apps/CtsVerifier/assets/audioquality/tone_250
new file mode 100644
index 0000000..ed411f5
--- /dev/null
+++ b/apps/CtsVerifier/assets/audioquality/tone_250
Binary files differ
diff --git a/apps/CtsVerifier/jni/Android.mk b/apps/CtsVerifier/jni/Android.mk
index 98a4678..4343259 100644
--- a/apps/CtsVerifier/jni/Android.mk
+++ b/apps/CtsVerifier/jni/Android.mk
@@ -14,19 +14,4 @@
# limitations under the License.
#
-LOCAL_PATH:= $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := libctsverifier_jni
-
-LOCAL_MODULE_TAGS := optional
-
-LOCAL_PRELINK_MODULE := false
-
-LOCAL_SRC_FILES := \
- CtsVerifierJniOnLoad.cpp \
- com_android_cts_verifier_os_FileUtils.cpp
-
-LOCAL_C_INCLUDES := $(JNI_H_INCLUDE)
-
-include $(BUILD_SHARED_LIBRARY)
+include $(call all-subdir-makefiles)
diff --git a/apps/CtsVerifier/jni/audioquality/Android.mk b/apps/CtsVerifier/jni/audioquality/Android.mk
new file mode 100644
index 0000000..565cec2
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Android.mk
@@ -0,0 +1,30 @@
+# Copyright (C) 2010 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+LOCAL_PATH := $(call my-dir)
+
+include $(CLEAR_VARS)
+
+LOCAL_CPP_EXTENSION := .cpp
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+LOCAL_MODULE := libaudioquality
+LOCAL_SRC_FILES := Fft.cpp Window.cpp GlitchTest.cpp MeasureRms.cpp \
+ OverflowCheck.cpp LinearityTest.cpp CompareSpectra.cpp \
+ GenerateSinusoid.cpp Wrapper.cpp
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/apps/CtsVerifier/jni/audioquality/CompareSpectra.cpp b/apps/CtsVerifier/jni/audioquality/CompareSpectra.cpp
new file mode 100644
index 0000000..262a400
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/CompareSpectra.cpp
@@ -0,0 +1,179 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+// An amplitude-normalized spectrum comparison method.
+
+#include "Fft.h"
+#include "Window.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+/* Find the endpoints of the signal stored in data such that the rms of
+ the found segment exceeds signalOnRms. data is of length n. The
+ RMS calculations used to find the endpoints use a window of length
+ step and advance step samples. The approximate, conservative
+ endpoint sample indices are returned in start and end. */
+static void findEndpoints(short* data, int n, int step, float signalOnRms,
+ int* start, int* end) {
+ int size = step;
+ *start = *end = 0;
+ int last_frame = n - size;
+ for (int frame = 0; frame < last_frame; frame += step) {
+ double sum = 0.0;
+ for (int i=0; i < size; ++i) {
+ float val = data[i + frame];
+ sum += (val * val);
+ }
+ float rms = sqrt(sum / size);
+ if (! *start) {
+ if (rms >= signalOnRms) {
+ *start = frame + size;
+ }
+ continue;
+ } else {
+ if (rms < signalOnRms) {
+ *end = frame - size;
+ // fprintf(stderr, "n:%d onset:%d offset:%d\n", n, *start, *end);
+ return;
+ }
+ }
+ }
+ // Handle the case where the signal does not drop below threshold
+ // after onset.
+ if ((*start > 0) && (! *end)) {
+ *end = n - size - 1;
+ }
+}
+
+// Sum the magnitude squared spectra.
+static void accumulateMagnitude(float* im, float* re, int size, double* mag) {
+ for (int i = 0; i < size; ++i) {
+ mag[i] += ((re[i] * re[i]) + (im[i] * im[i]));
+ }
+}
+
+/* Return a pointer to 1+(fftSize/2) spectrum magnitude values
+ averaged over all of the numSamples in pcm. It is the
+ responsibility of the caller to free this magnitude array. Return
+ NULL on failure. Use 50% overlap on the spectra. An FFT of
+ fftSize points is used to compute the spectra, The overall signal
+ rms over all frequencies between lowestBin and highestBin is
+ returned as a scalar in rms. */
+double* getAverageSpectrum(short* pcm, int numSamples, int fftSize,
+ int lowestBin, int highestBin, float* rms) {
+ if (numSamples < fftSize) return NULL;
+ int numFrames = 1 + ((2 * (numSamples - fftSize)) / fftSize);
+ int numMag = 1 + (fftSize / 2);
+ float* re = new float[fftSize];
+ float* im = new float[fftSize];
+ double* mag = new double[numMag];
+ for (int i = 0; i < numMag; ++i) {
+ mag[i] = 0.0;
+ }
+ Window wind(fftSize);
+ Fft ft;
+ int pow2 = ft.fftPow2FromWindowSize(fftSize);
+ ft.fftInit(pow2);
+ int input_p = 0;
+ for (int i = 0; i < numFrames; ++i) {
+ wind.window(pcm + input_p, re, 0.0);
+ for (int j = 0; j < fftSize; ++j) {
+ im[j] = 0.0;
+ }
+ ft.fft(re,im);
+ accumulateMagnitude(im, re, numMag, mag);
+ input_p += fftSize / 2;
+ }
+ double averageEnergy = 0.0; // per frame average energy
+ for (int i = 0; i < numMag; ++i) {
+ double e = mag[i]/numFrames;
+ if ((i >= lowestBin) && (i <= highestBin))
+ averageEnergy += e;
+ mag[i] = sqrt(e);
+ }
+ *rms = sqrt(averageEnergy / (highestBin - lowestBin + 1));
+ delete [] re;
+ delete [] im;
+ return mag;
+}
+
+/* Compare the average magnitude spectra of the signals in pcm and
+ refPcm, which are of length numSamples and numRefSamples,
+ respectively; both sampled at sample_rate. The maximum deviation
+ between average spectra, expressed in dB, is returned in
+ maxDeviation, and the rms of all dB variations is returned in
+ rmsDeviation. Note that a lower limit is set on the frequencies that
+ are compared so as to ignore irrelevant DC and rumble components. If
+ the measurement fails for some reason, return 0; else return 1, for
+ success. Causes for failure include the amplitude of one or both of
+ the signals being too low, or the duration of the signals being too
+ short.
+
+ Note that the expected signal collection scenario is that the phone
+ would be stimulated with a broadband signal as in a recognition
+ attempt, so that there will be some "silence" regions at the start and
+ end of the pcm signals. The preferred stimulus would be pink noise,
+ but any broadband signal should work. */
+int compareSpectra(short* pcm, int numSamples, short* refPcm,
+ int numRefSamples, float sample_rate,
+ float* maxDeviation, float* rmsDeviation) {
+ int fftSize = 512; // must be a power of 2
+ float lowestFreq = 100.0; // don't count DC, room rumble, etc.
+ float highestFreq = 3500.0; // ignore most effects of sloppy anti alias filters.
+ int lowestBin = int(0.5 + (lowestFreq * fftSize / sample_rate));
+ int highestBin = int(0.5 + (highestFreq * fftSize / sample_rate));
+ float signalOnRms = 1000.0; // endpointer RMS on/off threshold
+ int endpointStepSize = int(0.5 + (sample_rate * 0.02)); // 20ms setp
+ float rms1 = 0.0;
+ float rms2 = 0.0;
+ int onset = 0;
+ int offset = 0;
+ findEndpoints(refPcm, numRefSamples, endpointStepSize, signalOnRms,
+ &onset, &offset);
+ double* spect1 = getAverageSpectrum(refPcm + onset, offset - onset,
+ fftSize, lowestBin, highestBin, &rms1);
+ findEndpoints(pcm, numSamples, endpointStepSize, signalOnRms,
+ &onset, &offset);
+ double* spect2 = getAverageSpectrum(pcm + onset, offset - onset,
+ fftSize, lowestBin, highestBin, &rms2);
+ int magSize = 1 + (fftSize/2);
+ if ((rms1 <= 0.0) || (rms2 <= 0.0))
+ return 0; // failure because one or both signals are too short or
+ // too low in amplitude.
+ float rmsNorm = rms2 / rms1; // compensate for overall gain differences
+ // fprintf(stderr, "Level normalization: %f dB\n", 20.0 * log10(rmsNorm));
+ *maxDeviation = 0.0;
+ float sumDevSquared = 0.0;
+ for (int i = lowestBin; i <= highestBin; ++i) {
+ double val = 1.0;
+ if ((spect1[i] > 0.0) && (spect2[i] > 0.0)) {
+ val = 20.0 * log10(rmsNorm * spect1[i] / spect2[i]);
+ }
+ sumDevSquared += val * val;
+ if (fabs(val) > fabs(*maxDeviation)) {
+ *maxDeviation = val;
+ }
+ // fprintf(stderr, "%d %f\n", i, val);
+ }
+ *rmsDeviation = sqrt(sumDevSquared / (highestBin - lowestBin + 1));
+ delete [] spect1;
+ delete [] spect2;
+ return 1; // success
+}
+
+
diff --git a/apps/CtsVerifier/jni/audioquality/CompareSpectra.h b/apps/CtsVerifier/jni/audioquality/CompareSpectra.h
new file mode 100644
index 0000000..8b473e1
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/CompareSpectra.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef COMPARE_SPECTRA_H
+#define COMPARE_SPECTRA_H
+
+/* Compare the average magnitude spectra of the signals in pcm and
+ refPcm, which are of length numSamples and nRefSamples,
+ respectively; both sampled at sample_rate. The maximum deviation
+ between average spectra, expressed in dB, is returned in
+ maxDeviation, and the rms of all dB variations is returned in
+ rmsDeviation. Note that a lower limit is set on the frequencies that
+ are compared so as to ignore irrelevant DC and rumble components. If
+ the measurement fails for some reason, return 0; else return 1, for
+ success. Causes for failure include the amplitude of one or both of
+ the signals being too low, or the duration of the signals being too
+ short.
+
+ Note that the expected signal collection scenario is that the phone
+ would be stimulated with a broadband signal as in a recognition
+ attempt, so that there will be some "silence" regions at the start and
+ end of the pcm signals. The preferred stimulus would be pink noise,
+ but any broadband signal should work. */
+
+int compareSpectra(short* pcm, int numSamples, short* refPcm,
+ int nRefSamples, float sampleRate,
+ float* maxDeviation, float* rmsDeviation);
+
+#endif // COMPARE_SPECTRA_H
diff --git a/apps/CtsVerifier/jni/audioquality/Fft.cpp b/apps/CtsVerifier/jni/audioquality/Fft.cpp
new file mode 100644
index 0000000..867bc86
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Fft.cpp
@@ -0,0 +1,186 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include "Fft.h"
+
+#include <stdlib.h>
+#include <math.h>
+
+Fft::Fft(void) : mCosine(0), mSine(0), mFftSize(0), mFftTableSize(0) { }
+
+Fft::~Fft(void) {
+ fftCleanup();
+}
+
+/* Construct a FFT table suitable to perform a DFT of size 2^power. */
+void Fft::fftInit(int power) {
+ fftCleanup();
+ fftMakeTable(power);
+}
+
+void Fft::fftCleanup() {
+ delete [] mSine;
+ delete [] mCosine;
+ mSine = NULL;
+ mCosine = NULL;
+ mFftTableSize = 0;
+ mFftSize = 0;
+}
+
+/* z <- (10 * log10(x^2 + y^2)) for n elements */
+int Fft::fftLogMag(float *x, float *y, float *z, int n) {
+ float *xp, *yp, *zp, t1, t2, ssq;
+
+ if(x && y && z && n) {
+ for(xp=x+n, yp=y+n, zp=z+n; zp > z;) {
+ t1 = *--xp;
+ t2 = *--yp;
+ ssq = (t1*t1)+(t2*t2);
+ *--zp = (ssq > 0.0)? 10.0 * log10((double)ssq) : -200.0;
+ }
+ return 1; //true
+ } else {
+ return 0; // false/fail
+ }
+}
+
+int Fft::fftMakeTable(int pow2) {
+ int lmx, lm;
+ float *c, *s;
+ double scl, arg;
+
+ mFftSize = 1 << pow2;
+ mFftTableSize = lmx = mFftSize/2;
+ mSine = new float[lmx];
+ mCosine = new float[lmx];
+ scl = (M_PI*2.0)/mFftSize;
+ for (s=mSine, c=mCosine, lm=0; lm<lmx; lm++ ) {
+ arg = scl * lm;
+ *s++ = sin(arg);
+ *c++ = cos(arg);
+ }
+ mBase = (mFftTableSize * 2)/mFftSize;
+ mPower2 = pow2;
+ return(mFftTableSize);
+}
+
+
+/* Compute the discrete Fourier transform of the 2**l complex sequence
+ * in x (real) and y (imaginary). The DFT is computed in place and the
+ * Fourier coefficients are returned in x and y.
+ */
+void Fft::fft( float *x, float *y ) {
+ float c, s, t1, t2;
+ int j1, j2, li, lix, i;
+ int lmx, lo, lixnp, lm, j, nv2, k=mBase, im, jm, l = mPower2;
+
+ for (lmx=mFftSize, lo=0; lo < l; lo++, k *= 2) {
+ lix = lmx;
+ lmx /= 2;
+ lixnp = mFftSize - lix;
+ for (i=0, lm=0; lm<lmx; lm++, i += k ) {
+ c = mCosine[i];
+ s = mSine[i];
+ for ( li = lixnp+lm, j1 = lm, j2 = lm+lmx; j1<=li;
+ j1+=lix, j2+=lix ) {
+ t1 = x[j1] - x[j2];
+ t2 = y[j1] - y[j2];
+ x[j1] += x[j2];
+ y[j1] += y[j2];
+ x[j2] = (c * t1) + (s * t2);
+ y[j2] = (c * t2) - (s * t1);
+ }
+ }
+ }
+
+ /* Now perform the bit reversal. */
+ j = 1;
+ nv2 = mFftSize/2;
+ for ( i=1; i < mFftSize; i++ ) {
+ if ( j < i ) {
+ jm = j-1;
+ im = i-1;
+ t1 = x[jm];
+ t2 = y[jm];
+ x[jm] = x[im];
+ y[jm] = y[im];
+ x[im] = t1;
+ y[im] = t2;
+ }
+ k = nv2;
+ while ( j > k ) {
+ j -= k;
+ k /= 2;
+ }
+ j += k;
+ }
+}
+
+/* Compute the discrete inverse Fourier transform of the 2**l complex
+ * sequence in x (real) and y (imaginary). The DFT is computed in
+ * place and the Fourier coefficients are returned in x and y. Note
+ * that this DOES NOT scale the result by the inverse FFT size.
+ */
+void Fft::ifft(float *x, float *y ) {
+ float c, s, t1, t2;
+ int j1, j2, li, lix, i;
+ int lmx, lo, lixnp, lm, j, nv2, k=mBase, im, jm, l = mPower2;
+
+ for (lmx=mFftSize, lo=0; lo < l; lo++, k *= 2) {
+ lix = lmx;
+ lmx /= 2;
+ lixnp = mFftSize - lix;
+ for (i=0, lm=0; lm<lmx; lm++, i += k ) {
+ c = mCosine[i];
+ s = - mSine[i];
+ for ( li = lixnp+lm, j1 = lm, j2 = lm+lmx; j1<=li;
+ j1+=lix, j2+=lix ) {
+ t1 = x[j1] - x[j2];
+ t2 = y[j1] - y[j2];
+ x[j1] += x[j2];
+ y[j1] += y[j2];
+ x[j2] = (c * t1) + (s * t2);
+ y[j2] = (c * t2) - (s * t1);
+ }
+ }
+ }
+
+ /* Now perform the bit reversal. */
+ j = 1;
+ nv2 = mFftSize/2;
+ for ( i=1; i < mFftSize; i++ ) {
+ if ( j < i ) {
+ jm = j-1;
+ im = i-1;
+ t1 = x[jm];
+ t2 = y[jm];
+ x[jm] = x[im];
+ y[jm] = y[im];
+ x[im] = t1;
+ y[im] = t2;
+ }
+ k = nv2;
+ while ( j > k ) {
+ j -= k;
+ k /= 2;
+ }
+ j += k;
+ }
+}
+
+int Fft::fftGetSize(void) { return mFftSize; }
+
+int Fft::fftGetPower2(void) { return mPower2; }
diff --git a/apps/CtsVerifier/jni/audioquality/Fft.h b/apps/CtsVerifier/jni/audioquality/Fft.h
new file mode 100644
index 0000000..6a21d9a
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Fft.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef LEGACY_TALKIN_FFT_H
+#define LEGACY_TALKIN_FFT_H
+
+class Fft {
+public:
+ Fft(void);
+
+ virtual ~Fft(void);
+
+ // Prepare for radix-2 FFT's of size (1<<pow2)
+ void fftInit(int pow2);
+
+ // Forward fft. Real time-domain components in x, imaginary in y
+ void fft(float *x, float *y);
+
+ // Inverse fft. Real frequency-domain components in x, imaginary in y
+ void ifft(float *x, float *y);
+
+ // Compute the dB-scaled log-magnitude spectrum from the real spectal
+ // amplitude values in 'x', and imaginary values in 'y'. Return the
+ // magnitude spectrum in z. Compute 'n' components.
+ int fftLogMag(float *x, float *y, float *z, int n);
+
+ int fftGetSize();
+
+ int fftGetPower2();
+
+ // Return the power of 2 required to contain at least size samples.
+ static int fftPow2FromWindowSize(int size) {
+ int pow2 = 1;
+ while ((1 << pow2) < size)
+ pow2++;
+ return pow2;
+ }
+
+private:
+ // Free up memory and reset the static globals.
+ void fftCleanup();
+
+ // Create the sine/cosine basis tables and return the size of the FFT
+ // corresponding to pow2.
+ int fftMakeTable(int pow2);
+
+ float* mSine;
+ float* mCosine;
+ int mFftTableSize;
+ int mFftSize;
+ int mPower2;
+ int mBase;
+};
+
+#endif // LEGACY_TALKIN_FFT_H
diff --git a/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.cpp b/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.cpp
new file mode 100644
index 0000000..1823d58
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+// Generate a sinusoidal signal with optional onset and offset ramps.
+
+#include <stdlib.h>
+#include <math.h>
+
+static inline short clipAndRound(float val) {
+ if (val > 32767.0)
+ return 32767;
+ if (val < -32768.0)
+ return -32768;
+ if (val >= 0.0)
+ return static_cast<short>(0.5 + val);
+ return static_cast<short>(val - 0.5);
+}
+
+/* Return a sinusoid of frequency freq Hz and amplitude ampl in output
+ of length numOutput. If ramp > 0.0, taper the ends of the signal
+ with a half-raised-cosine function. It is up to the caller to
+ delete[] output. If this call fails due to unreasonable arguments,
+ numOutput will be zero, and output will be NULL. Note that the
+ duration of the up/down ramps will be within the specified
+ duration. Note that if amplitude is specified outside of the
+ numerical range of int16, the signal will be clipped at +- 32767. */
+void generateSinusoid(float freq, float duration, float sampleRate,
+ float amplitude, float ramp,
+ int* numOutput, short** output) {
+ // Sanity check
+ if ((duration < (2.0 * ramp)) || ((freq * 2.0) > sampleRate) || (ramp < 0.0)) {
+ *output = NULL;
+ *numOutput = 0;
+ return;
+ }
+ int numSamples = int(0.5 + (sampleRate * duration));
+ double arg = M_PI * 2.0 * freq / sampleRate;
+ short* wave = new short[numSamples];
+ int numRamp = int(0.5 + (sampleRate * ramp));
+ for (int i = 0; i < numSamples; ++i) {
+ float val = amplitude * sin(arg * i);
+ if (numRamp > 0) {
+ if (i < numRamp) {
+ float gain = (0.5 - (0.5 * cos((0.5 + i) * M_PI / numRamp)));
+ val *= gain;
+ } else {
+ if (i > (numSamples - numRamp - 1)) {
+ float gain = (0.5 - (0.5 * cos((0.5 + (numSamples - i - 1))
+ * M_PI / numRamp)));
+ val *= gain;
+ }
+ }
+ }
+ wave[i] = clipAndRound(val);
+ }
+ *numOutput = numSamples;
+ *output = wave;
+}
diff --git a/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.h b/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.h
new file mode 100644
index 0000000..eeedca6
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/GenerateSinusoid.h
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef GENERATE_SINUSOID_H
+#define GENERATE_SINUSOID_H
+
+/* Return a sinusoid of frequency freq Hz and amplitude ampl in output
+ of length numOutput. If ramp > 0.0, taper the ends of the signal
+ with a half-raised-cosine function. It is up to the caller to
+ delete[] output. If this call fails due to unreasonable arguments,
+ numOutput will be zero, and output will be NULL. Note that the
+ duration of the up/down ramps will be within the specified
+ duration. Note that if amplitude is specified outside of the
+ numerical range of int16, the signal will be clipped at +- 32767. */
+void generateSinusoid(float freq, float duration, float sampleRate,
+ float amplitude, float ramp,
+ int* numOutput, short** output);
+
+#endif // GENERATE_SINUSOID_H
+
diff --git a/apps/CtsVerifier/jni/audioquality/GlitchTest.cpp b/apps/CtsVerifier/jni/audioquality/GlitchTest.cpp
new file mode 100644
index 0000000..2605f77
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/GlitchTest.cpp
@@ -0,0 +1,181 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include "GlitchTest.h"
+#include "Window.h"
+#include "Fft.h"
+
+#include <math.h>
+
+GlitchTest::GlitchTest(void) : mRe(0), mIm(0), mFt(0), mWind(0) {}
+
+void GlitchTest::init(float sampleRate, float stimFreq, float onsetThresh,
+ float dbSnrThresh) {
+ cleanup(); // in case Init gets called multiple times.
+ // Analysis parameters
+ float windowDur = 0.025; // Duration of the analysis window in seconds.
+ float frameInterval = 0.01; // Interval in seconds between frame onsets
+ float lowestFreq = 200.0; // Lowest frequency to include in
+ // background noise power integration.
+ mSampleRate = sampleRate;
+ mOnsetThresh = onsetThresh;
+ mDbSnrThresh = dbSnrThresh;
+ mFrameStep = (int)(0.5 + (mSampleRate * frameInterval));
+ mWindowSize = (int)(0.5 + (mSampleRate * windowDur));
+ mWind = new Window(mWindowSize);
+ mFt = new Fft;
+ mFt->fftInit(mFt->fftPow2FromWindowSize(mWindowSize));
+ mFftSize = mFt->fftGetSize();
+ mRe = new float[mFftSize];
+ mIm = new float[mFftSize];
+ float freqInterval = mSampleRate / mFftSize;
+ // We can exclude low frequencies from consideration, since the
+ // phone may have DC offset in the A/D, and there may be rumble in
+ // the testing room.
+ mLowestSpectrumBin = (int)(0.5 + (lowestFreq / freqInterval));
+ // These are the bin indices within which most of the energy due to
+ // the (windowed) tone should be found.
+ mLowToneBin = (int)(0.5 + (stimFreq / freqInterval)) - 2;
+ mHighToneBin = (int)(0.5 + (stimFreq / freqInterval)) + 2;
+ if (mLowestSpectrumBin >= mLowToneBin) {
+ mLowestSpectrumBin = mHighToneBin + 1;
+ }
+}
+
+int GlitchTest::checkToneSnr(short* pcm, int numSamples, float* duration,
+ int* numBadFrames) {
+ *numBadFrames = 0;
+ *duration = 0.0;
+ if (!(mRe && mIm)) {
+ return -1; // not initialized.
+ }
+ int n_frames = 1 + ((numSamples - mWindowSize) / mFrameStep);
+ if (n_frames < 4) { // pathologically short input signal
+ return -2;
+ }
+ *numBadFrames = 0;
+ int onset = -1;
+ int offset = -1;
+ for (int frame = 0; frame < n_frames; ++frame) {
+ int numSpectra = 0;
+ mWind->window(pcm + frame*mFrameStep, mRe, 0.0);
+ realMagSqSpectrum(mRe, mWindowSize, mRe, &numSpectra);
+ int maxLoc = 0;
+ float maxValue = 0.0;
+ findPeak(mRe, mLowestSpectrumBin, numSpectra, &maxLoc, &maxValue);
+ // possible states: (1) before tone onset; (2) within tone
+ // region; (3) after tone offset.
+ if ((onset < 0) && (offset < 0)) { // (1)
+ if ((maxLoc >= mLowToneBin) && (maxLoc <= mHighToneBin)
+ && (maxValue > mOnsetThresh)) {
+ onset = frame;
+ }
+ continue;
+ }
+ if ((onset >= 0) && (offset < 0)) { // (2)
+ if (frame > (onset + 2)) { // let the framer get completely
+ // into the tonal signal
+ double sumNoise = 1.0; // init. to small non-zero vals to
+ // avoid log or divz problems
+ double sumSignal = 1.0;
+ float snr = 0.0;
+ if (maxValue < mOnsetThresh) {
+ offset = frame;
+ *duration = mFrameStep * (offset - onset) / mSampleRate;
+ if (*numBadFrames >= 1) {
+ (*numBadFrames) -= 1; // account for expected glitch at
+ // signal offset
+ }
+ continue;
+ }
+ for (int i = mLowestSpectrumBin; i < mLowToneBin; ++i) {
+ sumNoise += mRe[i]; // note that mRe contains the magnitude
+ // squared spectrum.
+ }
+ for (int i = mLowToneBin; i <= mHighToneBin; ++i)
+ sumSignal += mRe[i];
+ for (int i = mHighToneBin + 1; i < numSpectra; ++i) {
+ sumNoise += mRe[i]; // Note: mRe has the mag squared spectrum.
+ }
+ snr = 10.0 * log10(sumSignal / sumNoise);
+ if (snr < mDbSnrThresh)
+ (*numBadFrames) += 1;
+ }
+ continue;
+ }
+ if ((onset >= 0) && (offset > 0)) { // (3)
+ if ((maxLoc >= mLowToneBin) && (maxLoc <= mHighToneBin) &&
+ (maxValue > mOnsetThresh)) { // tone should not pop up again!
+ (*numBadFrames) += 1;
+ }
+ continue;
+ }
+ }
+ if ((onset >= 0) && (offset > 0))
+ return 1; // Success.
+ if (onset < 0) {
+ return -3; // Signal onset not found.
+ }
+ return -4; // Signal offset not found.
+}
+
+void GlitchTest::cleanup(void) {
+ delete [] mRe;
+ delete [] mIm;
+ delete mFt;
+ delete mWind;
+ mRe = 0;
+ mIm = 0;
+ mWind = 0;
+ mFt = 0;
+}
+
+int GlitchTest::realMagSqSpectrum(float* data, int numInput,
+ float* output, int* numOutput) {
+ *numOutput = 0;
+ if ((numInput <= 0) || (numInput > mFftSize))
+ return 0;
+ int i = 0;
+ for (i = 0; i < numInput; ++i) {
+ mRe[i] = data[i];
+ mIm[i] = 0.0;
+ }
+ for ( ; i < mFftSize; ++i) {
+ mRe[i] = 0.0;
+ mIm[i] = 0.0;
+ }
+ mFt->fft(mRe, mIm);
+ *numOutput = 1 + (mFftSize / 2);
+ for (i = 0; i < *numOutput; ++i) {
+ output[i] = (mRe[i] * mRe[i]) + (mIm[i] * mIm[i]);
+ }
+ return 1;
+}
+
+void GlitchTest::findPeak(float* data, int startSearch, int endSearch,
+ int* maxLoc, float* maxValue) {
+ float amax = data[startSearch];
+ int loc = startSearch;
+ for (int i = startSearch + 1; i < endSearch; ++i) {
+ if (data[i] > amax) {
+ amax = data[i];
+ loc = i;
+ }
+ }
+ *maxLoc = loc;
+ *maxValue = 10.0 * log10(amax / mWindowSize);
+}
+
diff --git a/apps/CtsVerifier/jni/audioquality/GlitchTest.h b/apps/CtsVerifier/jni/audioquality/GlitchTest.h
new file mode 100644
index 0000000..de96e6e
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/GlitchTest.h
@@ -0,0 +1,96 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef GLITCH_TEST_H
+#define GLITCH_TEST_H
+
+class Fft;
+class Window;
+
+class GlitchTest {
+public:
+ GlitchTest(void);
+
+ virtual ~GlitchTest(void) {
+ cleanup();
+ }
+
+ /* Set up the instance to operate on input test signals sampled at
+ sample_rate that contain a stimulis tone of stim_freq frequency.
+ The signal will be considered on during the interval it exceeds
+ onset_thresh (dB re 1.0). Any frames containing a tone that have
+ a signal energy to out-of-band energy ratio less than
+ db_snr_thresh are counted as bad frames. Init must be called
+ before CheckToneSnr. */
+ void init(float sample_rate, float stim_freq, float onset_thresh,
+ float db_snr_thresh);
+
+ /* Analyze the n_samples of the lin16 signal in pcm. This signal is
+ assumed sampled at sample_rate, and to contain a sinusoid with
+ center frequency stim_freq, embedded somewhere in time, with
+ "silence" intervals before and after. The contiguous duration of
+ the tone that exceeds onset_thresh (in dB re 1.0) is returned as
+ seconds in duration. The number of frames for which the ratio of
+ the energy at the tone frequency to the energy in the rest of the
+ spectrum is less than db_snr_thresh is returned in n_bad_frames.
+ If the test succeed, the method returns 1, else it returns a
+ negative number that reflects the cause of failure as follows:
+ -1 The instance is not initialized.
+ -2 There are not enough samples to do a reasonable check.
+ -3 The tone signal onset was not found.
+ -4 The tone signal end was not found. */
+ int checkToneSnr(short* pcm, int n_samples, float* duration,
+ int* n_bad_frames);
+
+private:
+ // Free memory, etc.
+ void cleanup(void);
+
+ /* Do a real FFT on the n_input samples in data, and return n_output
+ power spectral density points in output. The output points include
+ DC through the Nyquist frequency (i.e. 1 + fft_size/2). output
+ must be large enough to accommodate this size. If n_input==0 or
+ n_input > fft_size, return 0; else return 1. */
+ int realMagSqSpectrum(float* data, int n_input,
+ float* output, int* n_output);
+
+ /* Find the largest value in data starting at start_search and ending
+ at end_search-1. The values in data are assumed to be magnitude
+ squared values from a spectrum computation based on window_size
+ sample points. Return the index where the largest value was found,
+ and return the dB (re 1.0) equivalent of the highest magnitude. */
+ void findPeak(float* data, int start_search, int end_search,
+ int* max_loc, float* max_value);
+
+ // Real and Imaginary analysis arrays.
+ float* mRe;
+ float* mIm;
+ // Fourier transform and window.
+ Fft* mFt;
+ Window* mWind;
+ // Derived parameters and other variables.
+ float mSampleRate;
+ int mFrameStep;
+ int mWindowSize;
+ int mFftSize;
+ float mOnsetThresh;
+ float mDbSnrThresh;
+ int mLowestSpectrumBin;
+ int mLowToneBin;
+ int mHighToneBin;
+};
+
+#endif // GLITCH_TEST_H
diff --git a/apps/CtsVerifier/jni/audioquality/LinearityTest.cpp b/apps/CtsVerifier/jni/audioquality/LinearityTest.cpp
new file mode 100644
index 0000000..f8cf9ac
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/LinearityTest.cpp
@@ -0,0 +1,172 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+/* This test accepts a collection of N speech waveforms collected as
+ part of N recognition attempts. The waveforms are ordered by
+ increasing presentation level. The test determines the extent to
+ which the peak amplitudes in the waveforms track the change in
+ presentation level. Failure to track the presentation level within
+ some reasonable margin is an indication of clipping or of automatic
+ gain control in the signal path.
+
+ The speech stimuli that are used for this test should simply be
+ replications of exactly the same speech signal presented at
+ different levels. It is expected that all recognition attempts on
+ this signal result in correct recognition. A warning, but not a
+ hard failure, should be issued if any of the attempts fail. The
+ hard failure criterion for this test should be only based on the
+ amplitude linearity tracking. */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+
+/* Keep a record of the top N absolute values found using a slow
+ bubble-sort. This is OK, since the use of this program is not time
+ critical, and N is usually small. Note that the argument n = N-1. */
+static void bubbleUp(int* store, int n, short val) {
+ if (val < store[n])
+ return;
+ for (int i = 0; i <= n; ++i) {
+ if (val >= store[i]) {
+ for (int j = n; j > i ; j--)
+ store[j] = store[j-1];
+ store[i] = val;
+ return;
+ }
+ }
+}
+
+/* Make two measurements on the signal of length numSamples sampled at
+ sampleRate in pcm: the RMS of the highest amplitude 30ms segment
+ (returned in peakRms), and the RMS of the top 50 peak absolute
+ values found (returned in peakAverage). If the signal is too
+ short to make reasonable measurements, the function returns 0, else
+ it returns 1. */
+static int peakLevels(short* pcm, int numSamples, float sampleRate,
+ float* peakAverage, float* peakRms) {
+ float rmsFrameSize = 0.03;
+ float rmsFrameStep = 0.01;
+ int frameStep = int(0.5 + (sampleRate * rmsFrameStep));
+ int frameSize = int(0.5 + (sampleRate * rmsFrameSize));
+ int numFrames = 1 + ((numSamples - frameSize) / frameStep);
+
+ if (numFrames < 10) {
+ return 0; // failure for too short signal
+ }
+
+ // Peak RMS calculation
+ double maxEnergy = 0.0;
+ for (int frame = 0; frame < numFrames; ++frame) {
+ double energy = 0.0;
+ int limit = (frame * frameStep) + frameSize;
+ for (int i = frame * frameStep; i < limit; ++i) {
+ double s = pcm[i];
+ energy += s * s;
+ }
+ if (energy > maxEnergy) {
+ maxEnergy = energy;
+ }
+ }
+ *peakRms = sqrt(maxEnergy / frameSize);
+
+ // Find the absolute highest topN peaks in the signal and compute
+ // the RMS of their values.
+ int topN = 50; // The number of highest peaks over which to average.
+ int topM = topN - 1;
+ int* maxVal = new int[topN];
+ for (int i = 0; i < topN; ++i) {
+ maxVal[i] = 0;
+ }
+ for (int i = 0; i < numSamples; ++i) {
+ if (pcm[i] >= 0) {
+ bubbleUp(maxVal, topM, pcm[i]);
+ } else {
+ bubbleUp(maxVal, topM, -pcm[i]);
+ }
+ }
+ float sum = 0.0;
+ // The RMS is taken bacause we want the values of the highest peaks
+ // to dominate.
+ for (int i = 0; i < topN; ++i) {
+ float fval = maxVal[i];
+ sum += (fval * fval);
+ }
+ delete [] maxVal;
+ *peakAverage = sqrt(sum/topN);
+ return 1; // success
+}
+
+/* There are numSignals int16 signals in pcms. sampleCounts is an
+ integer array of length numSignals containing their respective
+ lengths in samples. They are all sampled at sampleRate. The pcms
+ are ordered by increasing stimulus level. The level steps between
+ successive stimuli were of size dbStepSize dB. The signal with
+ index referenceStim (0 <= referenceStim < numSignals) should be in
+ an amplitude range that is reasonably certain to be linear (e.g. at
+ normal speaking levels). The maximum deviation in linearity found
+ (in dB) is returned in maxDeviation. The function returns 1 if
+ the measurements could be made, or a negative number that
+ indicates the error, as follows:
+ -1 The input signals or sample counts are missing.
+ -2 The number of input signals is < 2.
+ -3 The specified sample rate is <= 4000.0
+ -4 The dB step size for the increase in stimulus level is <= 0.0
+ -5 The specified reverence stimulus number is out of range.
+ -6 One or more of the stimuli is too short in duration. */
+int linearityTest(short** pcms, int* sampleCounts, int numSignals,
+ float sampleRate, float dbStepSize, int referenceStim,
+ float* maxDeviation) {
+ if (!(pcms && sampleCounts)) {
+ return -1; // Input signals or sample counts are missing
+ }
+ if (numSignals < 2) {
+ return -2; // the number of input signals must be >= 2;
+ }
+ if (sampleRate <= 4000.0) {
+ return -3; // The sample rate must be > 4000 Hz.
+ }
+ if (dbStepSize <= 0.0) {
+ return -4; // The dB step size must be > 0.0
+ }
+ if (!((referenceStim >= 0) && (referenceStim < numSignals))) {
+ return -5; // (0 <= referenceStim < numSignals) must be true
+ }
+ float* peakAverage = new float[numSignals];
+ float* peakRms = new float[numSignals];
+ for (int sig = 0; sig < numSignals; ++sig) {
+ if (!peakLevels(pcms[sig], sampleCounts[sig],
+ sampleRate, peakAverage + sig, peakRms + sig)) {
+ return -6; // failure because a signal is too short.
+ }
+ }
+ float peakAverageRef = peakAverage[referenceStim];
+ float peakRmsRef = peakRms[referenceStim];
+ float maxDev = 0.0;
+ for (int i = 0; i < numSignals; ++i) {
+ float dbAverage = 20.0 * log10(peakAverage[i]/peakAverageRef);
+ float dbRms = 20.0 * log10(peakRms[i]/peakRmsRef);
+ float reference = dbStepSize * (i - referenceStim);
+ float average_level = 0.5 * (dbAverage + dbRms);
+ float dev = fabs(average_level - reference);
+ // fprintf(stderr,"dbAverage:%f dbRms:%f reference:%f dev:%f\n",
+ // dbAverage, dbRms, reference, dev);
+ if (dev > maxDev)
+ maxDev = dev;
+ }
+ *maxDeviation = maxDev;
+ return 1;
+}
diff --git a/apps/CtsVerifier/jni/audioquality/LinearityTest.h b/apps/CtsVerifier/jni/audioquality/LinearityTest.h
new file mode 100644
index 0000000..d92566a
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/LinearityTest.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef LINEARITY_TEST_H
+#define LINEARITY_TEST_H
+
+/* There are numSignals int16 signals in pcms. sampleCounts is an
+ integer array of length numSignals containing their respective
+ lengths in samples. They are all sampled at sampleRate. The pcms
+ are ordered by increasing stimulus level. The level steps between
+ successive stimuli were of size dbStepSize dB. The signal with
+ index referenceStim (0 <= referenceStim < numSignals) should be in
+ an amplitude range that is reasonably certain to be linear (e.g. at
+ normal speaking levels). The maximum deviation in linearity found
+ (in dB) is returned in maxDeviation. The function returns 1 if
+ the measurements could be made, or a negative number that
+ indicates the error, as follows:
+ -1 The input signals or sample counts are missing.
+ -2 The number of input signals is < 2.
+ -3 The specified sample rate is <= 4000.0
+ -4 The dB step size for the increase in stimulus level is <= 0.0/
+ -5 The specified reverence stimulus number is out of range.
+ -6 One or more of the stimuli is too short in duration. */
+int linearityTest(short** pcms, int* sampleCounts, int numSignals,
+ float sampleRate, float dbStepSize,
+ int referenceStim, float* maxDeviation);
+
+
+#endif /* LINEARITY_TEST_H */
diff --git a/apps/CtsVerifier/jni/audioquality/MeasureRms.cpp b/apps/CtsVerifier/jni/audioquality/MeasureRms.cpp
new file mode 100644
index 0000000..640b191
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/MeasureRms.cpp
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include <math.h>
+
+/* Return the median of the n values in "values".
+ Uses a stupid bubble sort, but is only called once on small array. */
+float getMedian(float* values, int n) {
+ if (n <= 0)
+ return 0.0;
+ if (n == 1)
+ return values[0];
+ if (n == 2)
+ return 0.5 * (values[0] + values[1]);
+ for (int i = 1; i < n; ++i)
+ for (int j = i; j < n; ++j) {
+ if (values[j] < values[i-1]) {
+ float tmp = values[i-1];
+ values[i-1] = values[j];
+ values[j] = tmp;
+ }
+ }
+ int ind = int(0.5 + (0.5 * n)) - 1;
+ return values[ind];
+}
+
+float computeAndRemoveMean(short* pcm, int numSamples) {
+ float sum = 0.0;
+
+ for (int i = 0; i < numSamples; ++i)
+ sum += pcm[i];
+ short mean;
+ if (sum >= 0.0)
+ mean = (short)(0.5 + (sum / numSamples));
+ else
+ mean = (short)((sum / numSamples) - 0.5);
+ for (int i = 0; i < numSamples; ++i)
+ pcm[i] -= mean;
+ return sum / numSamples;
+}
+
+void measureRms(short* pcm, int numSamples, float sampleRate, float onsetThresh,
+ float* rms, float* stdRms, float* mean, float* duration) {
+ *rms = 0.0;
+ *stdRms = 0.0;
+ *duration = 0.0;
+ float frameDur = 0.025; // Both the duration and interval of the
+ // analysis frames.
+ float calInterval = 0.250; // initial part of signal used to
+ // establish background level (seconds).
+ double sumFrameRms = 1.0;
+ float sumSampleSquares = 0.0;
+ double sumFrameSquares = 1.0; // init. to small number to avoid
+ // log and divz problems.
+ int frameSize = (int)(0.5 + (sampleRate * frameDur));
+ int numFrames = numSamples / frameSize;
+ int numCalFrames = int(0.5 + (calInterval / frameDur));
+ if (numCalFrames < 1)
+ numCalFrames = 1;
+ int frame = 0;
+
+ *mean = computeAndRemoveMean(pcm, numSamples);
+
+ if (onsetThresh < 0.0) { // Handle the case where we want to
+ // simply measure the RMS of the entire
+ // input sequence.
+ for (frame = 0; frame < numFrames; ++frame) {
+ short* p_data = pcm + (frame * frameSize);
+ int i;
+ for (i = 0, sumSampleSquares = 0.0; i < frameSize; ++i) {
+ float samp = p_data[i];
+ sumSampleSquares += samp * samp;
+ }
+ sumSampleSquares /= frameSize;
+ sumFrameSquares += sumSampleSquares;
+ double localRms = sqrt(sumSampleSquares);
+ sumFrameRms += localRms;
+ }
+ *rms = sumFrameRms / numFrames;
+ *stdRms = sqrt((sumFrameSquares / numFrames) - (*rms * *rms));
+ *duration = frameSize * numFrames / sampleRate;
+ return;
+ }
+
+ /* This handles the case where we look for a target signal against a
+ background, and expect the signal to start some time after the
+ beginning, and to finish some time before the end of the input
+ samples. */
+ if (numFrames < (3 * numCalFrames)) {
+ return;
+ }
+ float* calValues = new float[numCalFrames];
+ float calMedian = 0.0;
+ int onset = -1;
+ int offset = -1;
+
+ for (frame = 0; frame < numFrames; ++frame) {
+ short* p_data = pcm + (frame * frameSize);
+ int i;
+ for (i = 0, sumSampleSquares = 1.0; i < frameSize; ++i) {
+ float samp = p_data[i];
+ sumSampleSquares += samp * samp;
+ }
+ sumSampleSquares /= frameSize;
+ /* We handle three states: (1) before the onset of the signal; (2)
+ within the signal; (3) following the signal. The signal is
+ assumed to be at least onsetThresh dB above the background
+ noise, and that at least one frame of silence/background
+ precedes the onset of the signal. */
+ if (onset < 0) { // (1)
+ sumFrameSquares += sumSampleSquares;
+ if (frame < numCalFrames ) {
+ calValues[frame] = sumSampleSquares;
+ continue;
+ }
+ if (frame == numCalFrames) {
+ calMedian = getMedian(calValues, numCalFrames);
+ if (calMedian < 10.0)
+ calMedian = 10.0; // avoid divz, etc.
+ }
+ float ratio = 10.0 * log10(sumSampleSquares / calMedian);
+ if (ratio > onsetThresh) {
+ onset = frame;
+ sumFrameSquares = 1.0;
+ sumFrameRms = 1.0;
+ }
+ continue;
+ }
+ if ((onset > 0) && (offset < 0)) { // (2)
+ int sig_frame = frame - onset;
+ if (sig_frame < numCalFrames) {
+ calValues[sig_frame] = sumSampleSquares;
+ } else {
+ if (sig_frame == numCalFrames) {
+ calMedian = getMedian(calValues, numCalFrames);
+ if (calMedian < 10.0)
+ calMedian = 10.0; // avoid divz, etc.
+ }
+ float ratio = 10.0 * log10(sumSampleSquares / calMedian);
+ int denFrames = frame - onset - 1;
+ if (ratio < (-onsetThresh)) { // found signal end
+ *rms = sumFrameRms / denFrames;
+ *stdRms = sqrt((sumFrameSquares / denFrames) - (*rms * *rms));
+ *duration = frameSize * (frame - onset) / sampleRate;
+ offset = frame;
+ continue;
+ }
+ }
+ sumFrameSquares += sumSampleSquares;
+ double localRms = sqrt(sumSampleSquares);
+ sumFrameRms += localRms;
+ continue;
+ }
+ if (offset > 0) { // (3)
+ /* If we have found the real signal end, the level should stay
+ low till data end. If not, flag this anomaly by increasing the
+ reported duration. */
+ float localRms = 1.0 + sqrt(sumSampleSquares);
+ float localSnr = 20.0 * log10(*rms / localRms);
+ if (localSnr < onsetThresh)
+ *duration = frameSize * (frame - onset) / sampleRate;
+ continue;
+ }
+ }
+ delete [] calValues;
+}
+
diff --git a/apps/CtsVerifier/jni/audioquality/MeasureRms.h b/apps/CtsVerifier/jni/audioquality/MeasureRms.h
new file mode 100644
index 0000000..78b43ae
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/MeasureRms.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef MEASURE_RMS_H
+#define MEASURE_RMS_H
+
+/* Measure the rms of the non-silence segment of the signal in pcm, which
+ is of numSamples length, and sampled at sampleRate. pcm is assumed to
+ consist of silence - signal - silence, as might be logged during a
+ speech recognition attempt. The stimulus signal in this case should
+ be approximately a 3-second burst of pink noise presented at a level
+ comparable to normal speaking level. The RMS is measured using 25ms
+ duration non-overlapping windows. These are averaged over the whole
+ non-silence part of pcm, and the result is returned in rms. The
+ standard deviation of this measurement over all frames is returned in
+ stdRms, and the estimated duration of the non-silence region, in
+ seconds, is returned in duration. The target signal is taken to be
+ that segment that is onsetThresh dB above the background, and is
+ expected to be continuous, once the onset has been found. If
+ onsetThresh < 0.0, simply make the measurememt over the entire pcm
+ signal. In both cases, the mean of the entire signal is returned in
+ mean. */
+void measureRms(short* pcm, int numSamples, float sampleRate,
+ float onsetThresh, float* rms, float* stdRms,
+ float* mean, float* duration);
+
+
+#endif /* MEASURE_RMS_H */
diff --git a/apps/CtsVerifier/jni/audioquality/OverflowCheck.cpp b/apps/CtsVerifier/jni/audioquality/OverflowCheck.cpp
new file mode 100644
index 0000000..20e9285
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/OverflowCheck.cpp
@@ -0,0 +1,122 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+/* This assumes an input signal that has at least a few hundred
+ milliseconds of high-amplitude sinusoidal signal. The signal is
+ expected to be a relatively low-frequency sinusoid (200-400 Hz).
+ If the signal is linearly reproduced or clipped, There will be no
+ large step changes in value from one sample to the next. On the
+ other hand, if the signal contains numerical overflow
+ (wrap-around), very large excursions will be produced.
+
+ This program first searches for the high-amplitude recorded
+ segment, then examines just that part of the signal for "large
+ excursions", and returns the results of the search as four
+ integers:
+
+ n_wraps signal_size sine_start sine_end
+
+ where n_wraps is the number of anomolous value jumps found,
+ signal_size is the number of lin16 samples found in the file,
+ sine_start and sine_end are the limits of the region searched for
+ anomolous jumps. */
+
+#include <stdlib.h>
+#include <math.h>
+
+// MAX_ALLOWED_STEP is the largest sample-to-sample change that will
+// be considered "normal" for 250 Hz signals sampled at 8kHz. This is
+// calibrated by the largest sample-to-sample change that is naturally
+// present in a 250 Hz sine wave with amplitude of 40000 (which is
+// actually 7804).
+#define MAX_ALLOWED_STEP 16000
+
+// This is the RMS value that is expected to be exceded by a sinusoid
+// with a peak amplitude of 32767 (actually 23169).
+#define SIGNAL_ON_RMS 12000.0
+
+static void findEndpoints(short* data, int n, int step, int* start, int* end) {
+ int size = step;
+ *start = *end = 0;
+ int last_frame = n - size;
+ for (int frame = 0; frame < last_frame; frame += step) {
+ double sum = 0.0;
+ for (int i=0; i < size; ++i) {
+ float val = data[i + frame];
+ sum += (val * val);
+ }
+ float rms = sqrt(sum / size);
+ if (! *start) {
+ if (rms >= SIGNAL_ON_RMS) {
+ *start = frame + size;
+ }
+ continue;
+ } else {
+ if (rms < SIGNAL_ON_RMS) {
+ *end = frame - size;
+ return;
+ }
+ }
+ }
+ if ((*start > 0) && (! *end)) {
+ *end = n - size - 1;
+ }
+}
+
+static void checkExcursions(short* data, int start, int end, int* numJumps,
+ int* maxPeak, int* minPeak) {
+ *numJumps = 0;
+ int endm = end - 1;
+ if ((endm - start) < 3) {
+ *numJumps = -1;
+ return;
+ }
+ *maxPeak = *minPeak = data[start];
+ for (int i = start; i < endm; ++i) {
+ int v1 = data[i];
+ int v2 = data[i+1];
+ if (v1 > *maxPeak)
+ *maxPeak = v1;
+ if (v1 < *minPeak)
+ *minPeak = v1;
+ int diff = v2 - v1;
+ if (diff < 0)
+ diff = -diff;
+ if (diff > MAX_ALLOWED_STEP)
+ (*numJumps) += 1;
+ }
+ return;
+}
+
+int overflowCheck(short* pcm, int numSamples, float sampleRate,
+ float* duration, int* numDeltas, int* onset, int* offset,
+ int* maxPeak, int* minPeak) {
+ float windSize = 0.020;
+ int minBuff = int(2.0 * sampleRate); // must have 2 sec of data at least.
+
+ if(pcm && (numSamples >= minBuff)) {
+ int step = int(0.5 + (windSize * sampleRate));
+ *onset = 0;
+ *offset = 0;
+
+ findEndpoints(pcm, numSamples, step, onset, offset);
+ *numDeltas = -1;
+ checkExcursions(pcm, *onset, *offset, numDeltas, maxPeak, minPeak);
+ *duration = (*offset - *onset) / sampleRate;
+ return 1; // true/success
+ }
+ return 0; // failure
+}
diff --git a/apps/CtsVerifier/jni/audioquality/OverflowCheck.h b/apps/CtsVerifier/jni/audioquality/OverflowCheck.h
new file mode 100644
index 0000000..ea6d780
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/OverflowCheck.h
@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef OVERFLOW_CHECK_H
+#define OVERFLOW_CHECK_H
+
+/* This is a clipping/overflow check. This is designed to look for a
+ ~3-second duration ~250 Hz pure tone at a level sufficient to cause
+ about 20% clipping. It examines the recorded waveform for possible
+ overflow/wraparound. The input signal of numSamples total sampled at
+ sampleRate is in pcm. The expected signal contains silence - tone -
+ silence. The approximate duration in seconds of the tone found is
+ returned in duration. The number of unexpectedly-large jumps within
+ the tone is returned in numDeltas. The approximate sample numbers of
+ the tone endpoints are returned in onset and offset. The maximum
+ and minimum found in the signal located between onset and offset are
+ returned in maxPeak and minPeak, respectively. The function
+ return is 1 if the operation was sucessful, 0 on failure. */
+int overflowCheck(short* pcm, int numSamples, float sampleRate,
+ float* duration, int* numDeltas, int* onset, int* offset,
+ int* maxPeak, int* minPeak);
+
+#endif // OVERFLOW_CHECK_H
diff --git a/apps/CtsVerifier/jni/audioquality/Window.cpp b/apps/CtsVerifier/jni/audioquality/Window.cpp
new file mode 100644
index 0000000..8e89ed4
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Window.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#include "Window.h"
+
+#include <stdlib.h>
+#include <math.h>
+
+void Window::windowCreate(int size) {
+ if (mWindowWeights && (mWindowSize < size)) {
+ delete [] mWindowWeights;
+ mWindowWeights = NULL;
+ mWindowSize = 0;
+ }
+ if (!mWindowWeights) {
+ mWindowWeights = new float[size];
+ }
+ if (mWindowSize != size) {
+ double arg = M_PI * 2.0 / size;
+ mWindowSize = size;
+ for (int i = 0; i < size; ++i) {
+ mWindowWeights[i] = 0.5 - (0.5 * cos((i + 0.5) * arg));
+ }
+ }
+}
+
+void Window::windowCleanup() {
+ mWindowSize = 0;
+ delete [] mWindowWeights;
+ mWindowWeights = NULL;
+}
+
+/* Multiply the signal in data by the window weights. Place the
+ resulting mWindowSize floating-point values in output. If preemp
+ is != 0.0, apply a 1st-order preemphasis filter, and assume that
+ there are mWindowSize+1 samples available in data. */
+void Window::window(short* data, float* output, float preemp) {
+ if (preemp == 0.0) {
+ for (int i = 0; i < mWindowSize; ++i)
+ output[i] = data[i] * mWindowWeights[i];
+ } else {
+ for (int i = 0; i < mWindowSize; ++i)
+ output[i] = (data[i+1] - (preemp * data[i])) * mWindowWeights[i];
+ }
+}
+
diff --git a/apps/CtsVerifier/jni/audioquality/Window.h b/apps/CtsVerifier/jni/audioquality/Window.h
new file mode 100644
index 0000000..08298354
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Window.h
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+#ifndef WINDOW_INTERFACE_H
+#define WINDOW_INTERFACE_H
+
+class Window {
+public:
+ Window(int size) : mWindowWeights(0), mWindowSize(0) {
+ windowCreate(size);
+ }
+
+ Window() : mWindowWeights(0), mWindowSize(0) {
+ }
+
+ virtual ~Window(void) {
+ windowCleanup();
+ }
+
+ /* Create a Hann window of length size. This allocates memory that
+ should be freed using window_cleanup(). */
+ void windowCreate(int size);
+
+ /* Free up memory and reset size to 0. */
+ void windowCleanup(void);
+
+
+ /* Multiply the signal in data by the window weights. Place the
+ resulting window_size floating-point values in output. If preemp
+ is != 0.0, apply a 1st-order preemphasis filter, and assume that
+ there are window_size+1 samples available in data. */
+ void window(short* data, float* output, float preemp);
+
+ int getWindowSize() { return mWindowSize; }
+
+ float* getWindowWeights() { return mWindowWeights; }
+
+private:
+ float* mWindowWeights;
+ int mWindowSize;
+
+};
+
+#endif /* WINDOW_INTERFACE_H */
diff --git a/apps/CtsVerifier/jni/audioquality/Wrapper.cpp b/apps/CtsVerifier/jni/audioquality/Wrapper.cpp
new file mode 100644
index 0000000..bee15c6
--- /dev/null
+++ b/apps/CtsVerifier/jni/audioquality/Wrapper.cpp
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+
+// Wrapper to the native phone test signal processing library, which
+// exposes an interface suitable for calling via JNI.
+
+#include <stdlib.h>
+#include <jni.h>
+
+#include "GenerateSinusoid.h"
+#include "MeasureRms.h"
+#include "GlitchTest.h"
+#include "OverflowCheck.h"
+#include "CompareSpectra.h"
+#include "LinearityTest.h"
+
+typedef short *shortPtr;
+
+extern "C" {
+ JNIEXPORT jshortArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_generateSinusoid(
+ JNIEnv *env, jobject obj,
+ jfloat freq, jfloat duration,
+ jfloat sampleRate, jfloat amplitude, jfloat ramp);
+ JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_measureRms(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jfloat sampleRate, jfloat onsetThresh);
+ JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_glitchTest(
+ JNIEnv *env, jobject obj,
+ jfloat sampleRate, jfloat stimFreq, jfloat onsetThresh,
+ jfloat dbSnrThresh, jshortArray jpcm);
+ JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_overflowCheck(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jfloat sampleRate);
+ JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_compareSpectra(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jshortArray jrefPcm, jfloat sampleRate);
+ JNIEXPORT jfloat JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_linearityTest(
+ JNIEnv *env, jobject obj,
+ jobjectArray jpcms,
+ jfloat sampleRate, jfloat dbStepSize, jint referenceStim);
+};
+
+/* Returns an array of sinusoidal samples.
+ If the arguments are invalid, returns an empty array. */
+JNIEXPORT jshortArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_generateSinusoid(
+ JNIEnv *env, jobject obj,
+ jfloat freq, jfloat duration,
+ jfloat sampleRate, jfloat amplitude, jfloat ramp) {
+ short *wave = NULL;
+ int numSamples = 0;
+
+ generateSinusoid(freq, duration, sampleRate, amplitude, ramp,
+ &numSamples, &wave);
+
+ jshortArray ja;
+ if (!numSamples) {
+ ja = env->NewShortArray(0);
+ } else {
+ ja = env->NewShortArray(numSamples);
+ env->SetShortArrayRegion(ja, 0, numSamples, wave);
+ delete[] wave;
+ }
+ return ja;
+}
+
+/* Returns an array of four floats.
+ ret[0] = RMS
+ ret[1] = standard deviation of the RMS
+ ret[2] = non-silent region duration
+ ret[3] = mean value
+*/
+JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_measureRms(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jfloat sampleRate, jfloat onsetThresh) {
+ float ret[4];
+ ret[0] = ret[1] = ret[2] = ret[3] = -1.0;
+ int numSamples = env->GetArrayLength(jpcm);
+ short *pcm = new short[numSamples];
+ env->GetShortArrayRegion(jpcm, 0, numSamples, pcm);
+
+ measureRms(pcm, numSamples, sampleRate, onsetThresh, ret, ret + 1,
+ ret + 3, ret + 2);
+
+ jfloatArray ja = env->NewFloatArray(4);
+ env->SetFloatArrayRegion(ja, 0, 4, ret);
+ return ja;
+}
+
+/* Returns an array of three floats.
+ ret[0] = #bad frames
+ ret[1] = error code
+ ret[2] = duration
+ Error code = 1 for success,
+ -1 if initialization failed,
+ -2 if insufficient samples
+ -3 if tone signal onset not found
+ -4 if tone signal end not found
+*/
+JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_glitchTest(
+ JNIEnv *env, jobject obj,
+ jfloat sampleRate, jfloat stimFreq, jfloat onsetThresh,
+ jfloat dbSnrThresh, jshortArray jpcm) {
+ float ret[3];
+ int numSamples = env->GetArrayLength(jpcm);
+ short *pcm = new short[numSamples];
+ env->GetShortArrayRegion(jpcm, 0, numSamples, pcm);
+
+ GlitchTest gt;
+ gt.init(sampleRate, stimFreq, onsetThresh, dbSnrThresh);
+ float duration = -1.0;
+ int badFrames = -1;
+ int success = gt.checkToneSnr(pcm, numSamples, &duration, &badFrames);
+ ret[0] = badFrames;
+ ret[1] = success;
+ ret[2] = duration;
+ jfloatArray ja = env->NewFloatArray(3);
+ env->SetFloatArrayRegion(ja, 0, 3, ret);
+ return ja;
+}
+
+/* Returns an array of seven floats.
+ ret[0] = num deltas
+ ret[1] = error code
+ ret[2] = duration
+ ret[3] = onset
+ ret[4] = offset
+ ret[5] = max peak
+ ret[6] = min peak
+ Error code = 1 for success, -1 for failure. */
+JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_overflowCheck(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jfloat sampleRate) {
+ float ret[7];
+ int numSamples = env->GetArrayLength(jpcm);
+ short *pcm = new short[numSamples];
+ env->GetShortArrayRegion(jpcm, 0, numSamples, pcm);
+
+ float duration = -1.0;
+ int numDeltas = -1, onset = -1, offset = -1;
+ int maxPeak = 0, minPeak = 0;
+ int success = overflowCheck(pcm, numSamples, sampleRate,
+ &duration, &numDeltas, &onset, &offset, &maxPeak, &minPeak);
+ ret[0] = numDeltas;
+ ret[1] = success ? 1 : -1;
+ ret[2] = duration;
+ ret[3] = onset;
+ ret[4] = offset;
+ ret[5] = maxPeak;
+ ret[6] = minPeak;
+ jfloatArray ja = env->NewFloatArray(7);
+ env->SetFloatArrayRegion(ja, 0, 7, ret);
+ return ja;
+}
+
+/* Returns an array of three floats.
+ ret[0] = max deviation,
+ ret[1] = error code,
+ ret[2] = rms deviation.
+ Error code = 1 for success, -1 for failure. */
+JNIEXPORT jfloatArray JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_compareSpectra(
+ JNIEnv *env, jobject obj,
+ jshortArray jpcm, jshortArray jrefPcm, jfloat sampleRate) {
+ float ret[3];
+ int numSamples = env->GetArrayLength(jpcm);
+ short *pcm = new short[numSamples];
+ env->GetShortArrayRegion(jpcm, 0, numSamples, pcm);
+ int nRefSamples = env->GetArrayLength(jrefPcm);
+ short *refPcm = new short[nRefSamples];
+ env->GetShortArrayRegion(jrefPcm, 0, nRefSamples, refPcm);
+
+ float maxDeviation = -1.0, rmsDeviation = -1.0;
+ int success = compareSpectra(pcm, numSamples, refPcm, nRefSamples,
+ sampleRate, &maxDeviation, &rmsDeviation);
+ ret[1] = success ? 1 : -1;
+
+ ret[0] = maxDeviation;
+ ret[2] = rmsDeviation;
+ jfloatArray ja = env->NewFloatArray(3);
+ env->SetFloatArrayRegion(ja, 0, 3, ret);
+ return ja;
+}
+
+/* Return maximum deviation from linearity in dB.
+ On failure returns:
+ -1.0 The input signals or sample counts are missing.
+ -2.0 The number of input signals is < 2.
+ -3.0 The specified sample rate is <= 4000.0
+ -4.0 The dB step size for the increase in stimulus level is <= 0.0
+ -5.0 The specified reverence stimulus number is out of range.
+ -6.0 One or more of the stimuli is too short in duration.
+*/
+JNIEXPORT jfloat JNICALL
+ Java_com_android_cts_verifier_audioquality_Native_linearityTest(
+ JNIEnv *env, jobject obj,
+ jobjectArray jpcms,
+ jfloat sampleRate, jfloat dbStepSize, jint referenceStim) {
+ int numSignals = env->GetArrayLength(jpcms);
+ int *sampleCounts = new int[numSignals];
+ short **pcms = new shortPtr[numSignals];
+ jshortArray ja;
+ for (int i = 0; i < numSignals; i++) {
+ ja = (jshortArray) env->GetObjectArrayElement(jpcms, i);
+ sampleCounts[i] = env->GetArrayLength(ja);
+ pcms[i] = new short[sampleCounts[i]];
+ env->GetShortArrayRegion(ja, 0, sampleCounts[i], pcms[i]);
+ }
+
+ float maxDeviation = -1.0;
+ int ret = linearityTest(pcms, sampleCounts, numSignals,
+ sampleRate, dbStepSize, referenceStim, &maxDeviation);
+ delete[] sampleCounts;
+ for (int i = 0; i < numSignals; i++) {
+ delete[] pcms[i];
+ }
+ delete[] pcms;
+ if (ret < 1) return ret;
+
+ return maxDeviation;
+}
diff --git a/apps/CtsVerifier/jni/verifier/Android.mk b/apps/CtsVerifier/jni/verifier/Android.mk
new file mode 100644
index 0000000..98a4678
--- /dev/null
+++ b/apps/CtsVerifier/jni/verifier/Android.mk
@@ -0,0 +1,32 @@
+#
+# Copyright (C) 2010 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+LOCAL_PATH:= $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_MODULE := libctsverifier_jni
+
+LOCAL_MODULE_TAGS := optional
+
+LOCAL_PRELINK_MODULE := false
+
+LOCAL_SRC_FILES := \
+ CtsVerifierJniOnLoad.cpp \
+ com_android_cts_verifier_os_FileUtils.cpp
+
+LOCAL_C_INCLUDES := $(JNI_H_INCLUDE)
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/apps/CtsVerifier/jni/CtsVerifierJniOnLoad.cpp b/apps/CtsVerifier/jni/verifier/CtsVerifierJniOnLoad.cpp
similarity index 100%
rename from apps/CtsVerifier/jni/CtsVerifierJniOnLoad.cpp
rename to apps/CtsVerifier/jni/verifier/CtsVerifierJniOnLoad.cpp
diff --git a/apps/CtsVerifier/jni/com_android_cts_verifier_os_FileUtils.cpp b/apps/CtsVerifier/jni/verifier/com_android_cts_verifier_os_FileUtils.cpp
similarity index 100%
rename from apps/CtsVerifier/jni/com_android_cts_verifier_os_FileUtils.cpp
rename to apps/CtsVerifier/jni/verifier/com_android_cts_verifier_os_FileUtils.cpp
diff --git a/apps/CtsVerifier/res/drawable-hdpi/fs_error.png b/apps/CtsVerifier/res/drawable-hdpi/fs_error.png
new file mode 100644
index 0000000..8270104
--- /dev/null
+++ b/apps/CtsVerifier/res/drawable-hdpi/fs_error.png
Binary files differ
diff --git a/apps/CtsVerifier/res/drawable-hdpi/fs_good.png b/apps/CtsVerifier/res/drawable-hdpi/fs_good.png
new file mode 100644
index 0000000..7786ac7
--- /dev/null
+++ b/apps/CtsVerifier/res/drawable-hdpi/fs_good.png
Binary files differ
diff --git a/apps/CtsVerifier/res/drawable-hdpi/fs_indeterminate.png b/apps/CtsVerifier/res/drawable-hdpi/fs_indeterminate.png
new file mode 100644
index 0000000..68f51ba
--- /dev/null
+++ b/apps/CtsVerifier/res/drawable-hdpi/fs_indeterminate.png
Binary files differ
diff --git a/apps/CtsVerifier/res/drawable-hdpi/fs_warning.png b/apps/CtsVerifier/res/drawable-hdpi/fs_warning.png
new file mode 100644
index 0000000..12baca5
--- /dev/null
+++ b/apps/CtsVerifier/res/drawable-hdpi/fs_warning.png
Binary files differ
diff --git a/apps/CtsVerifier/res/layout/aq_row.xml b/apps/CtsVerifier/res/layout/aq_row.xml
new file mode 100644
index 0000000..5db33f3
--- /dev/null
+++ b/apps/CtsVerifier/res/layout/aq_row.xml
@@ -0,0 +1,40 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="horizontal"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:background="#FF000000"
+ >
+ <TextView
+ android:id="@+id/testName"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:textSize="22px"
+ android:textColor="#FFFFFF"
+ android:layout_margin="10px"
+ />
+ <TextView
+ android:id="@+id/testScore"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:gravity="right"
+ android:textSize="22px"
+ android:textColor="#FFFFFF"
+ android:layout_margin="10px"
+ />
+</LinearLayout>
diff --git a/apps/CtsVerifier/res/layout/aq_sound_level_meter.xml b/apps/CtsVerifier/res/layout/aq_sound_level_meter.xml
new file mode 100644
index 0000000..c3cc8f9
--- /dev/null
+++ b/apps/CtsVerifier/res/layout/aq_sound_level_meter.xml
@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:gravity="center_horizontal"
+ android:layout_width="fill_parent"
+ android:layout_height="fill_parent"
+ android:background="#FF000000"
+ >
+ <TextView
+ android:id="@+id/label"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:layout_marginTop="20px"
+ android:gravity="center_horizontal"
+ android:textSize="18px"
+ android:textColor="#FFFFFF"
+ android:text="@string/aq_calibrate_volume_instructions"
+ />
+ <ProgressBar
+ android:id="@+id/slider"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:max="2000"
+ android:progress="1000"
+ style="?android:attr/progressBarStyleHorizontal"
+ android:padding="10px"
+ />
+ <TextView
+ android:id="@+id/status"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:gravity="center_horizontal"
+ android:textSize="18px"
+ android:textColor="#FFFFFF"
+ />
+ <Button
+ android:id="@+id/doneButton"
+ android:text="@string/aq_done"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_marginTop="20px"
+ />
+</LinearLayout>
diff --git a/apps/CtsVerifier/res/layout/aq_verifier_activity.xml b/apps/CtsVerifier/res/layout/aq_verifier_activity.xml
new file mode 100644
index 0000000..2bc4a65
--- /dev/null
+++ b/apps/CtsVerifier/res/layout/aq_verifier_activity.xml
@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:gravity="center_horizontal"
+ android:layout_width="fill_parent"
+ android:layout_height="fill_parent"
+ android:background="#FF000000"
+ >
+ <FrameLayout
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:layout_weight="1.0"
+ >
+ <ListView
+ android:id="@+id/list"
+ android:layout_width="fill_parent"
+ android:layout_height="fill_parent"
+ />
+ <ProgressBar
+ android:id="@+id/progress"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:indeterminate="true"
+ android:layout_gravity="center"
+ android:visibility="invisible"
+ />
+ </FrameLayout>
+ <LinearLayout
+ android:orientation="horizontal"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_marginTop="10px"
+ android:layout_marginBottom="10px"
+ >
+ <Button
+ android:id="@+id/calibrateButton"
+ android:text="@string/aq_calibrate"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ <Button
+ android:id="@+id/runAllButton"
+ android:text="@string/aq_run_all"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ <Button
+ android:id="@+id/stopButton"
+ android:text="@string/aq_stop"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ <Button
+ android:id="@+id/viewResultsButton"
+ android:text="@string/aq_view_results"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ <Button
+ android:id="@+id/clearButton"
+ android:text="@string/aq_clear"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ </LinearLayout>
+</LinearLayout>
diff --git a/apps/CtsVerifier/res/layout/aq_view_results.xml b/apps/CtsVerifier/res/layout/aq_view_results.xml
new file mode 100644
index 0000000..b8f020d0
--- /dev/null
+++ b/apps/CtsVerifier/res/layout/aq_view_results.xml
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ android:orientation="vertical"
+ android:gravity="center_horizontal"
+ android:layout_width="fill_parent"
+ android:layout_height="fill_parent"
+ android:background="#FF000000"
+ >
+ <ScrollView
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:layout_weight="1.0"
+ >
+ <TextView
+ android:id="@+id/textView"
+ android:layout_width="fill_parent"
+ android:layout_height="wrap_content"
+ android:textSize="18px"
+ android:textColor="#FFFFFF"
+ />
+ </ScrollView>
+ <LinearLayout
+ android:orientation="horizontal"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ android:layout_marginTop="10px"
+ android:layout_marginBottom="10px"
+ >
+ <Button
+ android:id="@+id/dismissButton"
+ android:text="@string/aq_dismiss"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ <Button
+ android:id="@+id/sendResultsButton"
+ android:text="@string/aq_email_results"
+ android:layout_width="wrap_content"
+ android:layout_height="wrap_content"
+ />
+ </LinearLayout>
+</LinearLayout>
diff --git a/apps/CtsVerifier/res/values/strings.xml b/apps/CtsVerifier/res/values/strings.xml
index c386a1b..0c9b198 100644
--- a/apps/CtsVerifier/res/values/strings.xml
+++ b/apps/CtsVerifier/res/values/strings.xml
@@ -31,6 +31,7 @@
<!-- Strings for TestListActivity -->
<string name="test_list_title">Manual Test List</string>
+ <string name="test_category_audio">Audio</string>
<string name="test_category_sensors">Sensors</string>
<string name="test_category_security">Security</string>
<string name="test_category_features">Features</string>
@@ -67,4 +68,66 @@
<string name="no_file_status">Could not stat file...</string>
<string name="congratulations">Congratulations!</string>
<string name="no_suid_files">No unauthorized suid files detected!</string>
+
+ <!-- Strings for Audio Quality Verifier -->
+
+ <!-- Title for Audio Quality Verifier activity -->
+ <string name="aq_verifier">Audio Quality Verifier</string>
+
+ <!-- Button labels for VerifierActivity -->
+ <string name="aq_calibrate">Calibrate</string>
+ <string name="aq_run_all">Run All</string>
+ <string name="aq_stop">Stop</string>
+ <string name="aq_view_results">Results</string>
+ <string name="aq_email_results">Send by email</string>
+ <string name="aq_clear">Clear</string>
+
+ <!-- Title for ViewResultsActivity -->
+ <string name="aq_view_results_name">Audio Quality Results</string>
+ <!-- Button label for ViewResultsActivity -->
+ <string name="aq_dismiss">Dismiss</string>
+ <!-- E-mail subject line for test results -->
+ <string name="aq_subject">Android Audio Quality Verifier Test Results</string>
+
+ <!-- Title for CalibrateVolumeActivity -->
+ <string name="aq_calibrate_volume_name">Calibrate Volume</string>
+ <!-- Instructions for calibrating the volume -->
+ <string name="aq_calibrate_volume_instructions">Adjust volume to the central point</string>
+ <!-- Button label for CalibrateVolumeActivity -->
+ <string name="aq_done">Done</string>
+ <!-- Status values for CalibrateVolumeActivity -->
+ <string name="aq_status_unknown">Status: unknown</string>
+ <string name="aq_status_low">Volume too low</string>
+ <string name="aq_status_high">Volume too high</string>
+ <string name="aq_status_ok">Volume OK</string>
+
+ <!-- Experiment names -->
+ <string name="aq_default_exp">Unnamed experiment</string>
+ <string name="aq_sound_level_exp">Sound level check</string>
+ <string name="aq_spectrum_shape_exp">Spectrum shape test</string>
+ <string name="aq_glitch_exp">Glitch test</string>
+ <string name="aq_linearity_exp">Gain linearity test</string>
+ <string name="aq_clipping_exp">Clipping check</string>
+ <string name="aq_bias_exp">Bias measurement</string>
+
+ <!-- Experiment outcomes -->
+ <string name="aq_fail">Fail</string>
+ <string name="aq_pass">Pass</string>
+ <string name="aq_complete">Complete</string>
+
+ <!-- Experiment reports -->
+ <string name="aq_loopback_report">Experiment ran successfully.</string>
+ <string name="aq_bias_report">Mean = %1$.3g, tolerance = +/- %2$.0f\nRMS = %3$.0f, duration = %4$.1fs</string>
+ <string name="aq_clipping_report_error">Overflow check unsuccessful</string>
+ <string name="aq_clipping_report_short">Insufficient tone detected.\nExpected %1$.1fs tone; observed %2$.1fs</string>
+ <string name="aq_clipping_report_fail">"Clipping check failed due to discontinuities.\nObserved %1$d bad frames\nTone duration %2$.1fs\nMin peak = %3$.0f, max = %4$.0f</string>
+ <string name="aq_clipping_report_pass">"Observed %1$d bad frames\nTone duration %2$.1fs\nMin peak = %3$.0f, max = %4$.0f</string>
+ <string name="aq_linearity_report_error">Experiment failed, error code %1$g</string>
+ <string name="aq_linearity_report_normal">Deviation from linearity = %1$.3g dB\nMax allowed = %2$.1f dB</string>
+ <string name="aq_glitch_report_error">Error performing Glitch test.</string>
+ <string name="aq_glitch_report_exact">%1$d glitches detected; expected %2$d, duration %3$.1fs</string>
+ <string name="aq_glitch_report_range">%1$d glitches detected; expected %2$d-%3$d, duration %4$.1fs</string>
+ <string name="aq_level_report">RMS = %1$.0f, target = %2$.0f\nTolerance = %3$.1f%%\nDuration = %4$.1fs</string>
+ <string name="aq_spectrum_report_error">Cannot perform test.\nCheck volume is sufficiently high?</string>
+ <string name="aq_spectrum_report_normal">RMS deviation = %1$.2f\nMax allowed deviation = %2$.1f</string>
</resources>
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioAssets.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioAssets.java
new file mode 100644
index 0000000..9725a4c
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioAssets.java
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import android.content.Context;
+import android.content.res.AssetManager;
+import android.util.Log;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+public class AudioAssets {
+
+ private static final String TAG = "AudioQualityVerifier";
+
+ private static final String STIM_BASENAME = "audioquality/stim_dt_";
+
+ public static byte[] getStim(Context context, int which) {
+ return readAsset(context, STIM_BASENAME + which);
+ }
+
+ public static byte[] getPinkNoise(Context context, int ampl, int duration) {
+ return readAsset(context, "pink_" + ampl + "_" + duration + "s");
+ }
+
+ private static byte[] readAsset(Context context, String filename) {
+ AssetManager assetManager = context.getAssets();
+ InputStream ais;
+ try {
+ ais = assetManager.open(filename);
+ } catch (IOException e) {
+ Log.e(TAG, "Cannot load asset " + filename);
+ return null;
+ }
+ byte[] buffer = Utils.readFile(ais);
+ return buffer;
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioQualityVerifierActivity.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioQualityVerifierActivity.java
new file mode 100644
index 0000000..9487a50
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/AudioQualityVerifierActivity.java
@@ -0,0 +1,259 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import com.android.cts.verifier.R;
+
+import android.app.Activity;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.graphics.Color;
+import android.graphics.Typeface;
+import android.media.AudioFormat;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.Button;
+import android.widget.ListView;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.AdapterView.OnItemClickListener;
+
+import java.util.ArrayList;
+
+/**
+ * Main UI for the Android Audio Quality Verifier.
+ */
+public class AudioQualityVerifierActivity extends Activity implements View.OnClickListener,
+ OnItemClickListener {
+ public static final String TAG = "AudioQualityVerifier";
+
+ public static final int SAMPLE_RATE = 16000;
+ public static final int AUDIO_FORMAT = AudioFormat.ENCODING_PCM_16BIT;
+ public static final int BYTES_PER_SAMPLE = 2;
+
+ // Intent Extra definitions, which must match those in
+ // com.google.android.voicesearch.speechservice.RecognitionController
+ public static final String EXTRA_RAW_AUDIO =
+ "android.speech.extras.RAW_AUDIO";
+
+ // Communication with ExperimentService
+ public static final String ACTION_EXP_STARTED =
+ "com.android.cts.verifier.audioquality.EXP_STARTED";
+ public static final String ACTION_EXP_FINISHED =
+ "com.android.cts.verifier.audioquality.EXP_FINISHED";
+ public static final String EXTRA_ABORTED =
+ "com.android.cts.verifier.audioquality.ABORTED";
+ public static final String EXTRA_EXP_ID =
+ "com.android.cts.verifier.audioquality.EXP_ID";
+ public static final String EXTRA_RUN_ALL =
+ "com.android.cts.verifier.audioquality.RUN_ALL";
+
+ // Communication with ViewResultsActivity
+ public static final String EXTRA_RESULTS =
+ "com.android.cts.verifier.audioquality.RESULTS";
+
+ private Button mCalibrateButton;
+ private Button mRunAllButton;
+ private Button mStopButton;
+ private Button mViewResultsButton;
+ private Button mClearButton;
+
+ private ListView mList;
+ private TwoColumnAdapter mAdapter;
+
+ private ProgressBar mProgress;
+
+ private ArrayList<Experiment> mExperiments;
+
+ private boolean mRunningExperiment;
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.aq_verifier_activity);
+
+ mCalibrateButton = (Button) findViewById(R.id.calibrateButton);
+ mRunAllButton = (Button) findViewById(R.id.runAllButton);
+ mStopButton = (Button) findViewById(R.id.stopButton);
+ mViewResultsButton = (Button) findViewById(R.id.viewResultsButton);
+ mClearButton = (Button) findViewById(R.id.clearButton);
+
+ mCalibrateButton.setOnClickListener(this);
+ mRunAllButton.setOnClickListener(this);
+ mStopButton.setOnClickListener(this);
+ mViewResultsButton.setOnClickListener(this);
+ mClearButton.setOnClickListener(this);
+
+ mStopButton.setEnabled(false);
+
+ mProgress = (ProgressBar) findViewById(R.id.progress);
+
+ mList = (ListView) findViewById(R.id.list);
+ mAdapter = new TwoColumnAdapter(this);
+
+ mExperiments = VerifierExperiments.getExperiments(this);
+
+ BroadcastReceiver receiver = new BroadcastReceiver() {
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ experimentReplied(intent);
+ }
+ };
+ IntentFilter filter = new IntentFilter();
+ filter.addAction(ACTION_EXP_STARTED);
+ filter.addAction(ACTION_EXP_FINISHED);
+ registerReceiver(receiver, filter);
+
+ fillAdapter();
+ mList.setAdapter(mAdapter);
+ mList.setOnItemClickListener(this);
+ }
+
+ @Override
+ public void onResume() {
+ super.onResume();
+ mAdapter.notifyDataSetChanged(); // Update List UI
+ }
+
+ // Called when an experiment has completed
+ private void experimentReplied(Intent intent) {
+ String action = intent.getAction();
+ if (ACTION_EXP_STARTED.equals(action)) {
+ mStopButton.setEnabled(true);
+ mRunAllButton.setEnabled(false);
+ } else if (ACTION_EXP_FINISHED.equals(action)) {
+ boolean mRunAll = intent.getBooleanExtra(EXTRA_RUN_ALL, false);
+ boolean aborted = intent.getBooleanExtra(EXTRA_ABORTED, true);
+ int expID = intent.getIntExtra(EXTRA_EXP_ID, -1);
+ if (mRunAll && !aborted) {
+ while (expID < mExperiments.size() - 1) {
+ if (runExperiment(++expID, true)) {
+ // OK, experiment is running
+ mAdapter.notifyDataSetChanged();
+ return;
+ }
+ // Otherwise, loop back and try the next experiment
+ }
+ }
+ mStopButton.setEnabled(false);
+ mRunAllButton.setEnabled(true);
+ mRunningExperiment = false;
+ mProgress.setVisibility(ProgressBar.INVISIBLE);
+ }
+ mAdapter.notifyDataSetChanged();
+ }
+
+ // Implements AdapterView.OnItemClickListener
+ public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+ if (mRunningExperiment) return;
+ runExperiment(position, false);
+ }
+
+ // Begin an experiment. Returns false if the experiment is not enabled.
+ private boolean runExperiment(int which, boolean all) {
+ Experiment exp = mExperiments.get(which);
+ if (!exp.isEnabled()) return false;
+ Intent intent = new Intent(this, ExperimentService.class);
+ intent.putExtra(EXTRA_EXP_ID, which);
+ intent.putExtra(EXTRA_RUN_ALL, all);
+ startService(intent);
+ mRunningExperiment = true;
+ mAdapter.notifyDataSetChanged();
+ mProgress.setVisibility(ProgressBar.VISIBLE);
+ return true;
+ }
+
+ // Implements View.OnClickListener:
+ public void onClick(View v) {
+ if (v == mCalibrateButton) {
+ Intent intent = new Intent(this, CalibrateVolumeActivity.class);
+ startActivity(intent);
+ } else if (v == mRunAllButton) {
+ if (mRunningExperiment) return;
+ int expID = -1;
+ while (expID < mExperiments.size() - 1) {
+ if (runExperiment(++expID, true)) break;
+ }
+ } else if (v == mStopButton) {
+ Intent intent = new Intent(this, ExperimentService.class);
+ stopService(intent);
+ } else if (v == mViewResultsButton) {
+ Intent intent = new Intent(this, ViewResultsActivity.class);
+ intent.putExtra(EXTRA_RESULTS, genReport());
+ startActivity(intent);
+ } else if (v == mClearButton) {
+ clear();
+ }
+ }
+
+ private void fillAdapter() {
+ mAdapter.clear();
+ for (Experiment exp : mExperiments) {
+ mAdapter.add(exp.getName());
+ }
+ }
+
+ class TwoColumnAdapter extends ArrayAdapter<String> {
+ TwoColumnAdapter(Context context) {
+ super(context, R.layout.aq_row);
+ }
+
+ @Override
+ public View getView(int position, View convertView, ViewGroup parent) {
+ LayoutInflater inflater = getLayoutInflater();
+ View row = inflater.inflate(R.layout.aq_row, parent, false);
+ TextView nameField = (TextView) row.findViewById(R.id.testName);
+ TextView scoreField = (TextView) row.findViewById(R.id.testScore);
+ Experiment exp = mExperiments.get(position);
+ nameField.setText(exp.getName());
+ scoreField.setText(exp.getScore());
+ if (exp.isRunning()) {
+ Typeface tf = nameField.getTypeface();
+ nameField.setTypeface(tf, 1);
+ }
+ if (!exp.isEnabled()) {
+ nameField.setTextColor(Color.GRAY);
+ }
+ return row;
+ }
+ }
+
+ private String genReport() {
+ StringBuilder sb = new StringBuilder();
+ for (Experiment exp : mExperiments) {
+ exp.getReport(sb);
+ }
+ return sb.toString();
+ }
+
+ private void clear() {
+ if (mRunningExperiment) {
+ Intent intent = new Intent(this, ExperimentService.class);
+ stopService(intent);
+ }
+ for (Experiment exp : mExperiments) {
+ exp.reset();
+ }
+ mAdapter.notifyDataSetChanged();
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/BackgroundAudio.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/BackgroundAudio.java
new file mode 100644
index 0000000..067a3d5
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/BackgroundAudio.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.AudioTrack;
+import android.util.Log;
+
+/**
+ * Continuously play background noise in a loop, until halt() is called.
+ * Used to simulate noisy environments, and for sound level calibration.
+ */
+public class BackgroundAudio extends Thread {
+ public static final String TAG = "AudioQualityVerifier";
+
+ private static final int BUFFER_TIME = 100; // Time in ms to buffer for
+
+ private boolean mProceed;
+ private AudioTrack mAudioTrack;
+ private byte[] mData;
+ private int mPos;
+ private int mBufferSize;
+
+ public void halt() {
+ mProceed = false;
+ }
+
+ public BackgroundAudio(byte[] data) {
+ mProceed = true;
+ mData = data;
+ mPos = 0;
+
+ // Calculate suitable buffer size:
+ final int minBufferSize = (BUFFER_TIME * AudioQualityVerifierActivity.SAMPLE_RATE
+ * AudioQualityVerifierActivity.BYTES_PER_SAMPLE) / 1000;
+ final int minHardwareBufferSize =
+ AudioTrack.getMinBufferSize(AudioQualityVerifierActivity.SAMPLE_RATE,
+ AudioFormat.CHANNEL_OUT_MONO, AudioQualityVerifierActivity.AUDIO_FORMAT);
+ mBufferSize = Math.max(minHardwareBufferSize, minBufferSize);
+ Log.i(TAG, "minBufferSize = " + minBufferSize + ", minHWSize = " + minHardwareBufferSize
+ + ", bufferSize = " + mBufferSize);
+
+ // Start playback:
+ Log.i(TAG, "Looping " + data.length + " bytes of audio, buffer size " + mBufferSize);
+ mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,
+ AudioQualityVerifierActivity.SAMPLE_RATE, AudioFormat.CHANNEL_OUT_MONO,
+ AudioQualityVerifierActivity.AUDIO_FORMAT, mBufferSize, AudioTrack.MODE_STREAM);
+ if (mAudioTrack.getState() == AudioTrack.STATE_INITIALIZED) {
+ writeAudio();
+ start(); // Begin background thread to push audio data
+ mAudioTrack.play();
+ } else {
+ Log.e(TAG, "Error initializing audio track.");
+ }
+ }
+
+ @Override
+ public void run() {
+ while (true) {
+ if (!mProceed) {
+ mAudioTrack.stop();
+ return; // End thread
+ }
+ writeAudio();
+ }
+ }
+
+ private void writeAudio() {
+ int len = mData.length;
+ int count;
+ int maxBytes = Math.min(mBufferSize, len - mPos);
+
+ count = mAudioTrack.write(mData, mPos, maxBytes);
+ if (count < 0) {
+ Log.e(TAG, "Error writing looped audio data");
+ halt();
+ return;
+ }
+ mPos += count;
+ if (mPos == len) {
+ mPos = 0; // Wraparound
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/CalibrateVolumeActivity.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/CalibrateVolumeActivity.java
new file mode 100644
index 0000000..c6cf34a
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/CalibrateVolumeActivity.java
@@ -0,0 +1,234 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import com.android.cts.verifier.R;
+
+import android.app.Activity;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.os.Bundle;
+import android.os.Handler;
+import android.os.Message;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+
+/**
+ * Play a continuous sound and allow the user to monitor the sound level
+ * at the mic in real time, relative to the range the phone can detect.
+ * This is not an absolute sound level meter, but lets the speaker volume
+ * and position be adjusted so that the clipping point is known.
+ */
+public class CalibrateVolumeActivity extends Activity implements View.OnClickListener {
+ public static final String TAG = "AudioQualityVerifier";
+
+ public static final int OUTPUT_AMPL = 5000;
+ public static final float TARGET_RMS = 5000.0f;
+ public static final float TARGET_AMPL = (float) (TARGET_RMS * Math.sqrt(2.0));
+ private static final float FREQ = 625.0f;
+
+ private static final float TOLERANCE = 1.03f;
+
+ private static final int DEBOUNCE_TIME = 500; // Minimum time in ms between status text changes
+ public static final boolean USE_PINK = false;
+
+ private ProgressBar mSlider;
+ private Button mDoneButton;
+ private TextView mStatus;
+ private BackgroundAudio mBackgroundAudio;
+ private Monitor mMonitor;
+ private Handler mHandler;
+
+ private Native mNative;
+
+ enum Status { LOW, OK, HIGH, UNDEFINED }
+ private static int[] mStatusText = {
+ R.string.aq_status_low, R.string.aq_status_ok, R.string.aq_status_high };
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.aq_sound_level_meter);
+
+ mSlider = (ProgressBar) findViewById(R.id.slider);
+ mStatus = (TextView) findViewById(R.id.status);
+ mStatus.setText(R.string.aq_status_unknown);
+
+ mDoneButton = (Button) findViewById(R.id.doneButton);
+ mDoneButton.setOnClickListener(this);
+
+ mNative = Native.getInstance();
+ mHandler = new UpdateHandler();
+ }
+
+ // Implements View.OnClickListener
+ public void onClick(View v) {
+ if (v == mDoneButton) {
+ finish();
+ }
+ }
+
+ @Override
+ protected void onResume() {
+ super.onResume();
+ final int DURATION = 1;
+ final float RAMP = 0.0f;
+ byte[] noise;
+ if (USE_PINK) {
+ noise = Utils.getPinkNoise(this, OUTPUT_AMPL, DURATION);
+ } else {
+ short[] sinusoid = mNative.generateSinusoid(FREQ, DURATION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, OUTPUT_AMPL, RAMP);
+ noise = Utils.shortToByteArray(sinusoid);
+ }
+ float[] results = mNative.measureRms(Utils.byteToShortArray(noise),
+ AudioQualityVerifierActivity.SAMPLE_RATE, -1.0f);
+ float rms = results[Native.MEASURE_RMS_RMS];
+ Log.i(TAG, "Stimulus amplitude " + OUTPUT_AMPL + ", RMS " + rms);
+ mBackgroundAudio = new BackgroundAudio(noise);
+ mMonitor = new Monitor();
+ }
+
+ @Override
+ protected void onPause() {
+ super.onPause();
+ mBackgroundAudio.halt();
+ mMonitor.halt();
+ }
+
+ private class UpdateHandler extends Handler {
+ private Status mState = Status.UNDEFINED;
+ private long mTimestamp = 0; // Time of last status change in ms
+
+ @Override
+ public void handleMessage(Message msg) {
+ int rms = msg.arg1;
+ int max = mSlider.getMax();
+ int progress = (max / 2 * rms) / Math.round(TARGET_RMS);
+ if (progress > max) progress = max;
+ mSlider.setProgress(progress);
+
+ Status state;
+ if (rms * TOLERANCE < TARGET_RMS) state = Status.LOW;
+ else if (rms > TARGET_RMS * TOLERANCE) state = Status.HIGH;
+ else state = Status.OK;
+ if (state != mState) {
+ long timestamp = System.currentTimeMillis();
+ if (timestamp - mTimestamp > DEBOUNCE_TIME) {
+ mStatus.setText(mStatusText[state.ordinal()]);
+ mState = state;
+ mTimestamp = timestamp;
+ }
+ }
+ }
+ }
+
+ class Monitor extends Thread {
+ private static final int BUFFER_TIME = 100; // Min time in ms to buffer for
+ private static final int READ_TIME = 25; // Max length of time in ms to read in one chunk
+ private static final boolean DEBUG = false;
+
+ private AudioRecord mRecord;
+ private int mSamplesToRead;
+ private byte[] mBuffer;
+ private boolean mProceed;
+
+ Monitor() {
+ mProceed = true;
+
+ mSamplesToRead = (READ_TIME * AudioQualityVerifierActivity.SAMPLE_RATE) / 1000;
+ mBuffer = new byte[mSamplesToRead * AudioQualityVerifierActivity.BYTES_PER_SAMPLE];
+
+ final int minBufferSize = (BUFFER_TIME * AudioQualityVerifierActivity.SAMPLE_RATE *
+ AudioQualityVerifierActivity.BYTES_PER_SAMPLE) / 1000;
+ final int minHardwareBufferSize = AudioRecord.getMinBufferSize(
+ AudioQualityVerifierActivity.SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO,
+ AudioQualityVerifierActivity.AUDIO_FORMAT);
+ final int bufferSize = Math.max(minHardwareBufferSize, minBufferSize);
+
+ mRecord = new AudioRecord(MediaRecorder.AudioSource.VOICE_RECOGNITION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO,
+ AudioQualityVerifierActivity.AUDIO_FORMAT, bufferSize);
+ if (mRecord.getState() != AudioRecord.STATE_INITIALIZED) {
+ Log.e(TAG, "Couldn't open audio for recording");
+ return;
+ }
+ mRecord.startRecording();
+ if (mRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
+ Log.e(TAG, "Couldn't record");
+ return;
+ }
+
+ start(); // Begin background thread
+ }
+
+ public void halt() {
+ mProceed = false;
+ }
+
+ @Override
+ public void run() {
+ int maxBytes = mSamplesToRead * AudioQualityVerifierActivity.BYTES_PER_SAMPLE;
+ int bytes;
+ while (true) {
+ if (!mProceed) {
+ mRecord.stop();
+ mRecord.release();
+ return; // End thread
+ }
+ bytes = mRecord.read(mBuffer, 0, maxBytes);
+ if (bytes < 0) {
+ if (bytes == AudioRecord.ERROR_INVALID_OPERATION) {
+ Log.e(TAG, "Recording object not initalized");
+ } else if (bytes == AudioRecord.ERROR_BAD_VALUE) {
+ Log.e(TAG, "Invalid recording parameters");
+ } else {
+ Log.e(TAG, "Error during recording");
+ }
+ return;
+ }
+ if (bytes >= 2) {
+ // Note: this won't work well if bytes is small (we should check)
+ short[] samples = Utils.byteToShortArray(mBuffer, 0, bytes);
+ float[] results = mNative.measureRms(samples,
+ AudioQualityVerifierActivity.SAMPLE_RATE, -1.0f);
+ float rms = results[Native.MEASURE_RMS_RMS];
+ float duration = results[Native.MEASURE_RMS_DURATION];
+ float mean = results[Native.MEASURE_RMS_MEAN];
+ if (DEBUG) {
+ // Confirm the RMS calculation
+ float verifyRms = 0.0f;
+ for (short x : samples) {
+ verifyRms += x * x;
+ }
+ verifyRms /= samples.length;
+ Log.i(TAG, "RMS: " + rms + ", bytes: " + bytes
+ + ", duration: " + duration + ", mean: " + mean
+ + ", manual RMS: " + Math.sqrt(verifyRms));
+ }
+ Message msg = mHandler.obtainMessage();
+ msg.arg1 = Math.round(rms);
+ mHandler.sendMessage(msg);
+ }
+ }
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Experiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Experiment.java
new file mode 100644
index 0000000..18727f4
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Experiment.java
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import com.android.cts.verifier.R;
+
+import android.content.Context;
+import android.util.Log;
+
+/**
+ * The base class for all audio experiments.
+ */
+public class Experiment implements Runnable {
+ protected static final String TAG = "AudioQualityVerifier";
+
+ private static final int DEFAULT_TIMEOUT = 5; // In seconds
+
+ private String mName;
+ private String mScore;
+ private String mReport;
+ private String mAudioFileName;
+
+ enum Status { NotStarted, Running, Stopped, Completed }
+ private Status mStatus;
+ private boolean mEnabled;
+
+ protected Native mNative;
+ protected Context mContext;
+ protected Terminator mTerminator;
+
+ public Experiment(boolean enable) {
+ mEnabled = enable;
+ mNative = Native.getInstance();
+ reset();
+ }
+
+ public void init(Context context) {
+ mName = lookupName(context);
+ }
+
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_default_exp);
+ }
+
+ protected String getString(int resId) {
+ return mContext.getString(resId);
+ }
+
+ public boolean isEnabled() {
+ return mEnabled;
+ }
+
+ public void reset() {
+ mStatus = Status.NotStarted;
+ mScore = "";
+ mReport = "";
+ mAudioFileName = null;
+ }
+
+ public void start() {
+ mStatus = Status.Running;
+ }
+
+ protected void setScore(String score) {
+ mScore = score;
+ }
+
+ protected void setReport(String report) {
+ mReport = report;
+ }
+
+ // Implements Runnable
+ public void run() {}
+
+ public void run(Context context, Terminator t) {
+ mContext = context;
+ mTerminator = t;
+ Thread thread = new Thread(this);
+ thread.start();
+ }
+
+ public void setRecording(byte[] data) {
+ // Save captured data to file
+ mAudioFileName = Utils.getExternalDir(mContext, this) + "/"
+ + Utils.cleanString(getName()) + ".raw";
+ Log.i(TAG, "Saving recorded data to " + mAudioFileName);
+ Utils.saveFile(mAudioFileName, data);
+ }
+
+ public String getAudioFileName() {
+ return mAudioFileName;
+ }
+
+ // Timeout in seconds
+ public int getTimeout() {
+ return DEFAULT_TIMEOUT;
+ }
+
+ public void cancel() {
+ mStatus = Status.Stopped;
+ }
+
+ public void stop() {
+ mStatus = Status.Completed;
+ }
+
+ public boolean isRunning() {
+ return mStatus == Status.Running;
+ }
+
+ public String getName() {
+ return mName;
+ }
+
+ public String getScore() {
+ switch (mStatus) {
+ case NotStarted:
+ return "-";
+ case Running:
+ return "...";
+ case Stopped:
+ return "-";
+ case Completed:
+ return mScore;
+ }
+ return "";
+ }
+
+ public void getReport(StringBuilder sb) {
+ sb.append(getName());
+ sb.append(": ");
+ sb.append(getScore());
+ sb.append("\n");
+ sb.append(mReport);
+ sb.append("\n\n");
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ExperimentService.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ExperimentService.java
new file mode 100644
index 0000000..95fd3b5
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ExperimentService.java
@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import android.app.Service;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Handler;
+import android.os.IBinder;
+import android.os.Message;
+import android.os.PowerManager;
+import android.util.Log;
+
+import java.util.ArrayList;
+
+/**
+ * Launch an experiment.
+ *
+ * Experiments are decoupled from the UI both so that they can run on a
+ * background thread without freezing the UI, and to support experiments
+ * which take over the screen from the UI (such as invoking Voice Search).
+ */
+public class ExperimentService extends Service implements Terminator {
+ private static final String TAG = "AudioQualityVerifier";
+ private static int BACKGROUND_LOAD = 0;
+
+ private ArrayList<Experiment> mExperiments;
+ private Experiment mExp;
+
+ private TimeoutHandler mHandler = null;
+ private PowerManager.WakeLock mWakeLock = null;
+
+ private boolean mRunAll;
+ private int mExpID;
+
+ private boolean mActive;
+ private LoadGenerator[] mLoadGenerator = null;
+
+ @Override
+ public IBinder onBind(Intent intent) {
+ return null;
+ }
+
+ @Override
+ public void onCreate() {
+ mExperiments = VerifierExperiments.getExperiments(this);
+ }
+
+ @Override
+ public void onDestroy() {
+ Log.i(TAG, "Service destroyed");
+ terminate(true);
+ }
+
+ /**
+ * Implements Terminator, to clean up when the experiment indicates it
+ * has completed.
+ */
+ public void terminate(boolean aborted) {
+ if (mLoadGenerator != null) {
+ for (LoadGenerator generator : mLoadGenerator) {
+ generator.halt();
+ }
+ mLoadGenerator = null;
+ }
+ if (!mActive) return;
+ mActive = false;
+ if (mHandler != null) mHandler.clear();
+ if (aborted) {
+ mExp.cancel();
+ } else {
+ mExp.stop();
+ }
+ Intent intent = new Intent(AudioQualityVerifierActivity.ACTION_EXP_FINISHED);
+ intent.putExtra(AudioQualityVerifierActivity.EXTRA_EXP_ID, mExpID);
+ intent.putExtra(AudioQualityVerifierActivity.EXTRA_RUN_ALL, mRunAll);
+ intent.putExtra(AudioQualityVerifierActivity.EXTRA_ABORTED, aborted);
+ sendBroadcast(intent);
+ if (mWakeLock != null) {
+ mWakeLock.release();
+ mWakeLock = null;
+ }
+ }
+
+ @Override
+ public int onStartCommand(Intent intent, int flags, int startId) {
+ mActive = true;
+
+ // Obtain wakelock
+ PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
+ mWakeLock = pm.newWakeLock(PowerManager.SCREEN_DIM_WAKE_LOCK, TAG);
+ mWakeLock.acquire();
+
+ if (BACKGROUND_LOAD > 0) {
+ mLoadGenerator = new LoadGenerator[BACKGROUND_LOAD];
+ for (int i = 0; i < BACKGROUND_LOAD; i++) {
+ mLoadGenerator[i] = new LoadGenerator();
+ }
+ }
+
+ mExpID = intent.getIntExtra(AudioQualityVerifierActivity.EXTRA_EXP_ID, -1);
+ if (mExpID == -1) {
+ Log.e(TAG, "Invalid test ID");
+ System.exit(0);
+ }
+ mRunAll = intent.getBooleanExtra(AudioQualityVerifierActivity.EXTRA_RUN_ALL, false);
+ mExp = mExperiments.get(mExpID);
+ mExp.start();
+
+ // Inform the VerifierActivity Activity that we have started:
+ Intent feedback = new Intent(AudioQualityVerifierActivity.ACTION_EXP_STARTED);
+ feedback.putExtra(AudioQualityVerifierActivity.EXTRA_EXP_ID, mExpID);
+ sendBroadcast(feedback);
+
+ mHandler = new TimeoutHandler();
+ mHandler.delay(mExp.getTimeout());
+ mExp.run(this, this);
+
+ return START_NOT_STICKY;
+ }
+
+ class TimeoutHandler extends Handler {
+ @Override
+ public void handleMessage(Message msg) {
+ terminate(true);
+ stopSelf();
+ }
+
+ public void delay(int secs) {
+ removeMessages(0);
+ sendMessageDelayed(obtainMessage(0), secs * 1000);
+ }
+
+ public void clear() {
+ removeMessages(0);
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/LoadGenerator.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/LoadGenerator.java
new file mode 100644
index 0000000..f19359c
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/LoadGenerator.java
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+/**
+ * Simulate a simple load on the CPU, to determine the effect on recording.
+ * A better approach would be to generate network activity, to
+ * trigger interrupts as well.
+ */
+public class LoadGenerator extends Thread {
+ private boolean mProceed;
+
+ public LoadGenerator() {
+ mProceed = true;
+ start(); // Begin thread
+ }
+
+ public void halt() {
+ mProceed = false;
+ }
+
+ @Override
+ public void run() {
+ long counter = 0;
+ while (mProceed) {
+ counter++; // Busy loop
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Native.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Native.java
new file mode 100644
index 0000000..87b11d1
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Native.java
@@ -0,0 +1,71 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+/**
+ * Interface to native (C++) DSP code.
+ */
+public class Native {
+ public native short[] generateSinusoid(float freq, float duration,
+ float sampleRate, float amplitude, float ramp);
+ public native float[] measureRms(short[] pcm, float sampleRate,
+ float onsetThresh);
+ public native float[] glitchTest(float sampleRate, float stimFreq,
+ float onsetThresh, float dbSnrThresh, short[] pcm);
+ public native float[] overflowCheck(short[] pcm, float sampleRate);
+ public native float[] compareSpectra(short[] pcm, short[] refPcm,
+ float sampleRate);
+ public native float linearityTest(short[][] pcms,
+ float sampleRate, float dbStepSize, int referenceStim);
+
+ // The following indexes must match those in wrapper.cc
+ public static final int MEASURE_RMS_RMS = 0;
+ public static final int MEASURE_RMS_STD_DEV = 1;
+ public static final int MEASURE_RMS_DURATION = 2;
+ public static final int MEASURE_RMS_MEAN = 3;
+
+ public static final int OVERFLOW_DELTAS = 0;
+ public static final int OVERFLOW_ERROR = 1;
+ public static final int OVERFLOW_DURATION = 2;
+ public static final int OVERFLOW_ONSET = 3;
+ public static final int OVERFLOW_OFFSET = 4;
+ public static final int OVERFLOW_MAX = 5;
+ public static final int OVERFLOW_MIN = 6;
+
+ public static final int GLITCH_COUNT = 0;
+ public static final int GLITCH_ERROR = 1;
+ public static final int GLITCH_DURATION = 2;
+
+ public static final int SPECTRUM_MAX_DEVIATION = 0;
+ public static final int SPECTRUM_ERROR = 1;
+ public static final int SPECTRUM_RMS_DEVIATION = 2;
+
+ private static Native mInstance = null;
+
+ static {
+ System.loadLibrary("audioquality");
+ }
+
+ private Native() {}
+
+ public static Native getInstance() {
+ if (mInstance == null) {
+ mInstance = new Native();
+ }
+ return mInstance;
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Terminator.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Terminator.java
new file mode 100644
index 0000000..b0edc90
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Terminator.java
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+/**
+ * Interface passed to each Experiment.
+ */
+public interface Terminator {
+ /**
+ * Indicate that the experiment has finished.
+ *
+ * @param aborted is true if the experiment terminated abnormally.
+ */
+ public void terminate(boolean aborted);
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Utils.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Utils.java
new file mode 100644
index 0000000..a65373c
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/Utils.java
@@ -0,0 +1,351 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import android.content.Context;
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.AudioTrack;
+import android.os.Environment;
+import android.util.Log;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+
+/**
+ * File and data utilities for the Audio Verifier.
+ */
+public class Utils {
+ public static final String TAG = "AudioQualityVerifier";
+ public static final ByteOrder BYTE_ORDER = ByteOrder.LITTLE_ENDIAN;
+
+ /**
+ * Time delay.
+ *
+ * @param ms time in milliseconds to pause for
+ */
+ public static void delay(int ms) {
+ try {
+ Thread.sleep(ms);
+ } catch (InterruptedException e) {}
+ }
+
+ public static String getExternalDir(Context context, Object exp) {
+ checkExternalStorageAvailable();
+ // API level 8:
+ // return context.getExternalFilesDir(null).getAbsolutePath();
+ // API level < 8:
+ String dir = Environment.getExternalStorageDirectory().getAbsolutePath();
+ dir += "/Android/data/" + exp.getClass().getPackage().getName() + "/files";
+ checkMakeDir(dir);
+ return dir;
+ }
+
+ private static void checkExternalStorageAvailable() {
+ String state = Environment.getExternalStorageState();
+ if (!Environment.MEDIA_MOUNTED.equals(state)) {
+ // TODO: Raise a Toast and supply internal storage instead
+ }
+ }
+
+ private static void checkMakeDir(String dir) {
+ File f = new File(dir);
+ if (!f.exists()) {
+ f.mkdirs();
+ }
+ }
+
+ /**
+ * Convert a string (e.g. the name of an experiment) to something more suitable
+ * for use as a filename.
+ *
+ * @param s the string to be cleaned
+ * @return a string which is similar (not necessarily unique) and safe for filename use
+ */
+ public static String cleanString(String s) {
+ StringBuilder sb = new StringBuilder();
+ for (char c : s.toCharArray()) {
+ if (Character.isWhitespace(c)) sb.append('_');
+ else if (Character.isLetterOrDigit(c)) sb.append(c);
+ }
+ return sb.toString();
+ }
+
+ /**
+ * Convert a sub-array from bytes to shorts.
+ *
+ * @param data array of bytes to be converted
+ * @param start first index to convert (should be even)
+ * @param len number of bytes to convert (should be even)
+ * @return an array of half the length, containing shorts
+ */
+ public static short[] byteToShortArray(byte[] data, int start, int len) {
+ short[] samples = new short[len / 2];
+ ByteBuffer bb = ByteBuffer.wrap(data, start, len);
+ bb.order(BYTE_ORDER);
+ for (int i = 0; i < len / 2; i++) {
+ samples[i] = bb.getShort();
+ }
+ return samples;
+ }
+
+ /**
+ * Convert a byte array to an array of shorts (suitable for the phone test
+ * native library's audio sample data).
+ *
+ * @param data array of bytes to be converted
+ * @return an array of half the length, containing shorts
+ */
+ public static short[] byteToShortArray(byte[] data) {
+ int len = data.length / 2;
+ short[] samples = new short[len];
+ ByteBuffer bb = ByteBuffer.wrap(data);
+ bb.order(BYTE_ORDER);
+ for (int i = 0; i < len; i++) {
+ samples[i] = bb.getShort();
+ }
+ return samples;
+ }
+
+ /**
+ * Convert a short array (as returned by the phone test native library)
+ * to an array of bytes.
+ *
+ * @param samples array of shorts to be converted
+ * @return an array of twice the length, broken out into bytes
+ */
+ public static byte[] shortToByteArray(short[] samples) {
+ int len = samples.length;
+ byte[] data = new byte[len * 2];
+ ByteBuffer bb = ByteBuffer.wrap(data);
+ bb.order(BYTE_ORDER);
+ for (int i = 0; i < len; i++) {
+ bb.putShort(samples[i]);
+ }
+ return data;
+ }
+
+ /**
+ * Scale the amplitude of an array of samples.
+ *
+ * @param samples to be scaled
+ * @param db decibels to scale up by (may be negative)
+ * @return the scaled samples
+ */
+ public static short[] scale(short[] samples, float db) {
+ short[] scaled = new short[samples.length];
+ // Convert decibels to a linear ratio:
+ double ratio = Math.pow(10.0, db / 20.0);
+ for (int i = 0; i < samples.length; i++) {
+ scaled[i] = (short) (samples[i] * ratio);
+ }
+ return scaled;
+ }
+
+ /**
+ * Read an entire file into memory.
+ *
+ * @param filename to be opened
+ * @return the file data, or null in case of error
+ */
+ private static byte[] readFile(String filename) {
+ FileInputStream fis;
+ try {
+ fis = new FileInputStream(filename);
+ } catch (FileNotFoundException e1) {
+ return null;
+ }
+
+ File file = new File(filename);
+ int len = (int) file.length();
+ byte[] data = new byte[len];
+
+ int pos = 0;
+ int bytes = 0;
+ int count;
+ while (pos < len) {
+ try {
+ count = fis.read(data, pos, len - pos);
+ } catch (IOException e) {
+ return null;
+ }
+ if (count < 1) return null;
+ pos += count;
+ }
+
+ try {
+ fis.close();
+ } catch (IOException e) {}
+ return data;
+ }
+
+ /**
+ * Read an entire file from an InputStream.
+ * Useful as AssetManager returns these.
+ *
+ * @param stream to read file contents from
+ * @return file data
+ */
+ public static byte[] readFile(InputStream stream) {
+ final int CHUNK_SIZE = 10000;
+ ByteArrayBuilder bab = new ByteArrayBuilder();
+ byte[] buf = new byte[CHUNK_SIZE];
+ int count;
+ while (true) {
+ try {
+ count = stream.read(buf, 0, CHUNK_SIZE);
+ } catch (IOException e) {
+ return null;
+ }
+ if (count == -1) break; // EOF
+ bab.append(buf, count);
+ }
+ return bab.toByteArray();
+ }
+
+ /**
+ * Save binary (audio) data to a file.
+ *
+ * @param filename to be written
+ * @param data contents
+ */
+ public static void saveFile(String filename, byte[] data) {
+ try {
+ FileOutputStream fos = new FileOutputStream(filename);
+ fos.write(data);
+ fos.close();
+ } catch (IOException e) {
+ Log.e(TAG, "Error writing to file " + filename);
+ }
+ }
+
+ /**
+ * Push an entire array of audio data to an AudioTrack.
+ *
+ * @param at destination
+ * @param data to be written
+ * @return true if successful, or false on error
+ */
+ public static boolean writeAudio(AudioTrack at, byte[] data) {
+ int pos = 0;
+ int len = data.length;
+ int count;
+
+ while (pos < len) {
+ count = at.write(data, pos, len - pos);
+ if (count < 0) return false;
+ pos += count;
+ }
+ at.flush();
+ return true;
+ }
+
+ /**
+ * Determine the number of audio samples in a file
+ *
+ * @param filename file containing audio data
+ * @return number of samples in file, or 0 if file does not exist
+ */
+ public static int duration(String filename) {
+ File file = new File(filename);
+ int len = (int) file.length();
+ return len / AudioQualityVerifierActivity.BYTES_PER_SAMPLE;
+ }
+
+ /**
+ * Determine the number of audio samples in a stimulus asset
+ *
+ * @param context to look up stimulus
+ * @param stimNum index number of this stimulus
+ * @return number of samples in stimulus
+ */
+ public static int duration(Context context, int stimNum) {
+ byte[] data = AudioAssets.getStim(context, stimNum);
+ return data.length / AudioQualityVerifierActivity.BYTES_PER_SAMPLE;
+ }
+
+ public static void playRawFile(String filename) {
+ byte[] data = readFile(filename);
+ if (data == null) {
+ Log.e(TAG, "Cannot read " + filename);
+ return;
+ }
+ playRaw(data);
+ }
+
+ public static void playStim(Context context, int stimNum) {
+ Utils.playRaw(getStim(context, stimNum));
+ }
+
+ public static byte[] getStim(Context context, int stimNum) {
+ return AudioAssets.getStim(context, stimNum);
+ }
+
+ public static byte[] getPinkNoise(Context context, int ampl, int duration) {
+ return AudioAssets.getPinkNoise(context, ampl, duration);
+ }
+
+ public static void playRaw(byte[] data) {
+ Log.i(TAG, "Playing " + data.length + " bytes of pre-recorded audio");
+ AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, AudioQualityVerifierActivity.SAMPLE_RATE,
+ AudioFormat.CHANNEL_OUT_MONO, AudioQualityVerifierActivity.AUDIO_FORMAT,
+ data.length, AudioTrack.MODE_STREAM);
+ writeAudio(at, data);
+ at.play();
+ }
+
+ /**
+ * The equivalent of a simplified StringBuilder, but for bytes.
+ */
+ public static class ByteArrayBuilder {
+ private byte[] buf;
+ private int capacity, size;
+
+ public ByteArrayBuilder() {
+ capacity = 100;
+ size = 0;
+ buf = new byte[capacity];
+ }
+
+ public void append(byte[] b, int nBytes) {
+ if (nBytes < 1) return;
+ if (size + nBytes > capacity) expandCapacity(size + nBytes);
+ System.arraycopy(b, 0, buf, size, nBytes);
+ size += nBytes;
+ }
+
+ public byte[] toByteArray() {
+ byte[] result = new byte[size];
+ System.arraycopy(buf, 0, result, 0, size);
+ return result;
+ }
+
+ private void expandCapacity(int min) {
+ capacity *= 2;
+ if (capacity < min) capacity = min;
+ byte[] expanded = new byte[capacity];
+ System.arraycopy(buf, 0, expanded, 0, size);
+ buf = expanded;
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/VerifierExperiments.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/VerifierExperiments.java
new file mode 100644
index 0000000..f0f0aa8
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/VerifierExperiments.java
@@ -0,0 +1,57 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import com.android.cts.verifier.audioquality.experiments.BiasExperiment;
+import com.android.cts.verifier.audioquality.experiments.ClippingExperiment;
+import com.android.cts.verifier.audioquality.experiments.GainLinearityExperiment;
+import com.android.cts.verifier.audioquality.experiments.GlitchExperiment;
+import com.android.cts.verifier.audioquality.experiments.SoundLevelExperiment;
+import com.android.cts.verifier.audioquality.experiments.SpectrumShapeExperiment;
+
+import android.content.Context;
+
+import java.util.ArrayList;
+
+/**
+ * Data shared between the VerifierActivity and ExperimentService
+ */
+public class VerifierExperiments {
+
+ private static ArrayList<Experiment> mExperiments = null;
+
+ private VerifierExperiments() {
+ }
+
+ public static ArrayList<Experiment> getExperiments(Context context) {
+ if (mExperiments == null) {
+ mExperiments = new ArrayList<Experiment>();
+ mExperiments.add(new SoundLevelExperiment());
+ mExperiments.add(new BiasExperiment());
+ mExperiments.add(new ClippingExperiment());
+ mExperiments.add(new GainLinearityExperiment());
+ mExperiments.add(new SpectrumShapeExperiment());
+ mExperiments.add(new GlitchExperiment(0));
+ mExperiments.add(new GlitchExperiment(7));
+ // mExperiments.add(new VoiceRecognitionExperiment());
+ for (Experiment exp : mExperiments) {
+ exp.init(context);
+ }
+ }
+ return mExperiments;
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ViewResultsActivity.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ViewResultsActivity.java
new file mode 100644
index 0000000..87901b2
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/ViewResultsActivity.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality;
+
+import com.android.cts.verifier.R;
+
+import android.app.Activity;
+import android.content.ComponentName;
+import android.content.Intent;
+import android.net.Uri;
+import android.os.Bundle;
+import android.os.Parcelable;
+import android.view.View;
+import android.widget.Button;
+import android.widget.TextView;
+
+import java.io.File;
+import java.util.ArrayList;
+
+/**
+ * This Activity allows the user to examine the results of the
+ * experiments which have been run so far.
+ */
+public class ViewResultsActivity extends Activity implements View.OnClickListener {
+ private TextView mTextView;
+ private Button mDismissButton;
+ private Button mSendResultsButton;
+ private String mResults;
+
+ private ArrayList<Experiment> mExperiments;
+
+ // The package of the Gmail application
+ private static final String GMAIL_PACKAGE = "com.google.android.gm";
+
+ // The Gmail compose activity name
+ private static final String GMAIL_ACTIVITY = GMAIL_PACKAGE
+ + ".ComposeActivityGmail";
+
+ @Override
+ public void onCreate(Bundle savedInstanceState) {
+ super.onCreate(savedInstanceState);
+ setContentView(R.layout.aq_view_results);
+
+ mDismissButton = (Button) findViewById(R.id.dismissButton);
+ mDismissButton.setOnClickListener(this);
+
+ mSendResultsButton = (Button) findViewById(R.id.sendResultsButton);
+ mSendResultsButton.setOnClickListener(this);
+
+ mTextView = (TextView) findViewById(R.id.textView);
+
+ Intent intent = getIntent();
+ mResults = intent.getStringExtra(AudioQualityVerifierActivity.EXTRA_RESULTS);
+ mTextView.setText(mResults);
+
+ mExperiments = VerifierExperiments.getExperiments(this);
+ }
+
+ private void sendResults() {
+ Intent intent = new Intent();
+ intent.setAction(Intent.ACTION_SEND_MULTIPLE);
+ intent.setComponent(new ComponentName(GMAIL_PACKAGE, GMAIL_ACTIVITY));
+ intent.putExtra(Intent.EXTRA_SUBJECT, getString(R.string.aq_subject));
+ intent.putExtra(Intent.EXTRA_TEXT, mResults);
+
+ ArrayList<Parcelable> attachments = new ArrayList<Parcelable>();
+ for (Experiment exp : mExperiments) {
+ String filename = exp.getAudioFileName();
+ if (filename != null) {
+ attachments.add(Uri.fromFile(new File(filename)));
+ }
+ }
+ intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, attachments);
+
+ startActivity(intent);
+ }
+
+ // Implements View.OnClickListener
+ public void onClick(View v) {
+ if (v == mDismissButton) {
+ finish();
+ } else if (v == mSendResultsButton) {
+ sendResults();
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/BiasExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/BiasExperiment.java
new file mode 100644
index 0000000..bb6f8bf
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/BiasExperiment.java
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.Native;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * Experiment to look for excessive DC bias in the recordings.
+ * It calculates the mean of the observed samples.
+ */
+public class BiasExperiment extends LoopbackExperiment {
+ private static final float ONSET_THRESH = 10.0f;
+ private static final float TOLERANCE = 200.0f;
+
+ public BiasExperiment() {
+ super(true);
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_bias_exp);
+ }
+
+ @Override
+ protected void compare(byte[] stim, byte[] record) {
+ short[] pcm = Utils.byteToShortArray(record);
+ float[] results = mNative.measureRms(pcm, AudioQualityVerifierActivity.SAMPLE_RATE, ONSET_THRESH);
+ float rms = results[Native.MEASURE_RMS_RMS];
+ float duration = results[Native.MEASURE_RMS_DURATION];
+ float mean = results[Native.MEASURE_RMS_MEAN];
+ if (mean < -TOLERANCE || mean > TOLERANCE) {
+ setScore(getString(R.string.aq_fail));
+ } else {
+ setScore(getString(R.string.aq_pass));
+ }
+ setReport(String.format(getString(R.string.aq_bias_report),
+ mean, TOLERANCE, rms, duration));
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/ClippingExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/ClippingExperiment.java
new file mode 100644
index 0000000..deb3709
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/ClippingExperiment.java
@@ -0,0 +1,86 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.CalibrateVolumeActivity;
+import com.android.cts.verifier.audioquality.Native;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * Experiment to test the clipping behaviour of the microphone.
+ *
+ * The stimulus is sinusoidal, and calculated to cause clipping for
+ * part of the waveform. The experiment looks for strange clipping behaviour
+ * by checking if the signal has any discontinuities (which might indicate
+ * wraparound, for example).
+ */
+public class ClippingExperiment extends LoopbackExperiment {
+ private static final float FREQ = 250.0f;
+ private static final float AMPL = 32768.0f * 1.1f * CalibrateVolumeActivity.OUTPUT_AMPL
+ / CalibrateVolumeActivity.TARGET_AMPL;
+ private static final float DURATION = 3.0f; // Duration of tone in seconds
+ private static final float MIN_DURATION = DURATION * 0.9f;
+ private static final float RAMP = 0.01f;
+
+ public ClippingExperiment() {
+ super(true);
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_clipping_exp);
+ }
+
+ @Override
+ protected byte[] getStim(Context context) {
+ short[] sinusoid = mNative.generateSinusoid(FREQ, DURATION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, AMPL, RAMP);
+ return Utils.shortToByteArray(sinusoid);
+ }
+
+ @Override
+ protected void compare(byte[] stim, byte[] record) {
+ short[] pcm = Utils.byteToShortArray(record);
+ float[] ret = mNative.overflowCheck(pcm, AudioQualityVerifierActivity.SAMPLE_RATE);
+ int numDeltas = Math.round(ret[0]);
+ float error = ret[Native.OVERFLOW_ERROR];
+ float duration = ret[Native.OVERFLOW_DURATION];
+ float minPeak = ret[Native.OVERFLOW_MIN];
+ float maxPeak = ret[Native.OVERFLOW_MAX];
+
+ if (error < 0.0f) {
+ setScore(getString(R.string.aq_fail));
+ setReport(getString(R.string.aq_clipping_report_error));
+ } else if (duration < MIN_DURATION) {
+ setScore(getString(R.string.aq_fail));
+ setReport(String.format(getString(R.string.aq_clipping_report_short),
+ DURATION, duration));
+ } else if (numDeltas > 0) {
+ setScore(getString(R.string.aq_fail));
+ setReport(String.format(getString(R.string.aq_clipping_report_fail),
+ numDeltas, duration, minPeak, maxPeak));
+ } else {
+ setScore(getString(R.string.aq_pass));
+ setReport(String.format(getString(R.string.aq_clipping_report_pass),
+ numDeltas, duration, minPeak, maxPeak));
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GainLinearityExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GainLinearityExperiment.java
new file mode 100644
index 0000000..05f1602
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GainLinearityExperiment.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * Experiment to test the linearity of the microphone gain response.
+ *
+ * This plays a sequence of identical stimuli at increasing volumes and then
+ * analyzes the set of recordings.
+ */
+public class GainLinearityExperiment extends SequenceExperiment {
+ private static final int LEVELS = 4;
+ private static final float DB_STEP_SIZE = 10.0f;
+ private static final float TOLERANCE = 2.0f; // Maximum allowed deviation from linearity in dB
+ private static final int STIM_NUM = 31;
+
+ private short[] mReference = null;
+
+ public GainLinearityExperiment() {
+ super(true);
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_linearity_exp);
+ }
+
+ @Override
+ protected int getTrials() {
+ return LEVELS;
+ }
+
+ @Override
+ protected byte[] getStim(Context context, int trial) {
+ float db = (trial - (LEVELS - 1)) * DB_STEP_SIZE;
+ if (mReference == null) {
+ mReference = Utils.byteToShortArray(Utils.getStim(context, STIM_NUM));
+ }
+ short[] samples = Utils.scale(mReference, db);
+ return Utils.shortToByteArray(samples);
+ }
+
+ @Override
+ protected void compare(byte[][] stim, byte[][] record) {
+ short[][] pcms = new short[LEVELS][];
+ for (int i = 0; i < LEVELS; i++) {
+ pcms[i] = Utils.byteToShortArray(record[i]);
+ }
+ // We specify the middle stimulus (LEVELS / 2) as the "reference":
+ float deviation = mNative.linearityTest(pcms, AudioQualityVerifierActivity.SAMPLE_RATE,
+ DB_STEP_SIZE, LEVELS / 2);
+ if (deviation < 0.0f) {
+ setScore(getString(R.string.aq_fail));
+ setReport(String.format(getString(R.string.aq_linearity_report_error), deviation));
+ } else if (deviation > TOLERANCE) {
+ setScore(getString(R.string.aq_fail));
+ setReport(String.format(getString(R.string.aq_linearity_report_normal),
+ deviation, TOLERANCE));
+ } else {
+ setScore(getString(R.string.aq_pass));
+ setReport(String.format(getString(R.string.aq_linearity_report_normal),
+ deviation, TOLERANCE));
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GlitchExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GlitchExperiment.java
new file mode 100644
index 0000000..143c4a0
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/GlitchExperiment.java
@@ -0,0 +1,99 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.Native;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+import java.util.Random;
+
+/**
+ * Experiment to detect glitches or dropouts in the signal.
+ * A number of artificial glitches can be optionally introduced.
+ */
+public class GlitchExperiment extends LoopbackExperiment {
+ private static final float FREQ = 625.0f;
+ private static final float AMPL = 10000.0f;
+ private static final float ONSET_THRESH = 80.0f;
+ private static final float SNR_THRESH = 20.0f;
+ private static final float RAMP = 0.01f;
+ private static final float DURATION = 3.0f;
+
+ private int mArtificialGlitches;
+
+ public GlitchExperiment(int artificialGlitches) {
+ super(true);
+ mArtificialGlitches = artificialGlitches;
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ String s = context.getString(R.string.aq_glitch_exp);
+ if (mArtificialGlitches > 0) {
+ s += " (" + mArtificialGlitches + ")";
+ }
+ return s;
+ }
+
+ @Override
+ protected byte[] getStim(Context context) {
+ short[] sinusoid = mNative.generateSinusoid(FREQ, DURATION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, AMPL, RAMP);
+ addGlitches(sinusoid);
+ return Utils.shortToByteArray(sinusoid);
+ }
+
+ private void addGlitches(short[] samples) {
+ Random random = new Random();
+ for (int i = 0; i < mArtificialGlitches; i++) {
+ samples[random.nextInt(samples.length)] = 0;
+ }
+ }
+
+ @Override
+ protected void compare(byte[] stim, byte[] record) {
+ int targetMin = mArtificialGlitches > 0 ? 1 : 0;
+ int targetMax = mArtificialGlitches;
+ short[] pcm = Utils.byteToShortArray(record);
+ float[] ret = mNative.glitchTest(AudioQualityVerifierActivity.SAMPLE_RATE, FREQ,
+ ONSET_THRESH, SNR_THRESH, pcm);
+ int glitches = Math.round(ret[Native.GLITCH_COUNT]);
+ float error = ret[Native.GLITCH_ERROR];
+ float duration = ret[Native.GLITCH_DURATION];
+ if (error < 0.0f) {
+ setScore(getString(R.string.aq_fail));
+ setReport(getString(R.string.aq_glitch_report_error));
+ } else {
+ if (glitches > targetMax || glitches < targetMin) {
+ setScore(getString(R.string.aq_fail));
+ } else {
+ setScore(getString(R.string.aq_pass));
+ }
+ if (targetMin == targetMax) {
+ setReport(String.format(getString(R.string.aq_glitch_report_exact),
+ glitches, targetMax, duration));
+ } else {
+ setReport(String.format(getString(R.string.aq_glitch_report_range),
+ glitches, targetMin, targetMax, duration));
+ }
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/LoopbackExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/LoopbackExperiment.java
new file mode 100644
index 0000000..f4a1e1f
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/LoopbackExperiment.java
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.Experiment;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.util.Log;
+
+/**
+ * LoopbackExperiment represents a general class of experiments, all of which
+ * comprise playing an audio stimulus of some kind, whilst simultaneously
+ * recording from the microphone. The recording is then analyzed to determine
+ * the test results (score and report).
+ */
+public class LoopbackExperiment extends Experiment {
+ protected static final int TIMEOUT = 10;
+
+ // Amount of silence in ms before and after playback
+ protected static final int END_DELAY_MS = 500;
+
+ private Recorder mRecorder = null;
+
+ public LoopbackExperiment(boolean enable) {
+ super(enable);
+ }
+
+ protected byte[] getStim(Context context) {
+ int stimNum = 2;
+ byte[] data = Utils.getStim(context, stimNum);
+ return data;
+ }
+
+ @Override
+ public void run() {
+ byte[] playbackData = getStim(mContext);
+ byte[] recordedData = loopback(playbackData);
+
+ compare(playbackData, recordedData);
+ setRecording(recordedData);
+ mTerminator.terminate(false);
+ }
+
+ protected byte[] loopback(byte[] playbackData) {
+ int samples = playbackData.length / 2;
+ int duration = (samples * 1000) / AudioQualityVerifierActivity.SAMPLE_RATE; // In ms
+ int padSamples = (END_DELAY_MS * AudioQualityVerifierActivity.SAMPLE_RATE) / 1000;
+ int totalSamples = samples + 2 * padSamples;
+ byte[] recordedData = new byte[totalSamples * 2];
+
+ mRecorder = new Recorder(recordedData, totalSamples);
+ mRecorder.start();
+ Utils.delay(END_DELAY_MS);
+
+ Utils.playRaw(playbackData);
+
+ int timeout = duration + 2 * END_DELAY_MS;
+ try {
+ mRecorder.join(timeout);
+ } catch (InterruptedException e) {}
+
+ return recordedData;
+ }
+
+ protected void compare(byte[] stim, byte[] record) {
+ setScore(getString(R.string.aq_complete));
+ setReport(getString(R.string.aq_loopback_report));
+ }
+
+ private void halt() {
+ if (mRecorder != null) {
+ mRecorder.halt();
+ }
+ }
+
+ @Override
+ public void cancel() {
+ super.cancel();
+ halt();
+ }
+
+ @Override
+ public void stop() {
+ super.stop();
+ halt();
+ }
+
+ @Override
+ public int getTimeout() {
+ return TIMEOUT;
+ }
+
+ /* Class which records audio in a background thread, to fill the supplied buffer. */
+ class Recorder extends Thread {
+ private AudioRecord mRecord;
+ private int mSamples;
+ private byte[] mBuffer;
+ private boolean mProceed;
+
+ Recorder(byte[] buffer, int samples) {
+ mBuffer = buffer;
+ mSamples = samples;
+ mProceed = true;
+ }
+
+ public void halt() {
+ mProceed = false;
+ }
+
+ @Override
+ public void run() {
+ final int minBufferSize = AudioQualityVerifierActivity.SAMPLE_RATE
+ * AudioQualityVerifierActivity.BYTES_PER_SAMPLE;
+ final int minHardwareBufferSize = AudioRecord.getMinBufferSize(
+ AudioQualityVerifierActivity.SAMPLE_RATE,
+ AudioFormat.CHANNEL_IN_MONO, AudioQualityVerifierActivity.AUDIO_FORMAT);
+ final int bufferSize = Math.max(minHardwareBufferSize, minBufferSize);
+
+ mRecord = new AudioRecord(MediaRecorder.AudioSource.VOICE_RECOGNITION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, AudioFormat.CHANNEL_IN_MONO,
+ AudioQualityVerifierActivity.AUDIO_FORMAT, bufferSize);
+ if (mRecord.getState() != AudioRecord.STATE_INITIALIZED) {
+ Log.e(TAG, "Couldn't open audio for recording");
+ return;
+ }
+ mRecord.startRecording();
+ if (mRecord.getRecordingState() != AudioRecord.RECORDSTATE_RECORDING) {
+ Log.e(TAG, "Couldn't record");
+ return;
+ }
+
+ captureLoop();
+
+ mRecord.stop();
+ mRecord.release();
+ mRecord = null;
+ }
+
+ private void captureLoop() {
+ int totalBytes = mSamples * AudioQualityVerifierActivity.BYTES_PER_SAMPLE;
+ Log.i(TAG, "Recording " + totalBytes + " bytes");
+ int position = 0;
+ int bytes;
+ while (position < totalBytes && mProceed) {
+ bytes = mRecord.read(mBuffer, position, totalBytes - position);
+ if (bytes < 0) {
+ if (bytes == AudioRecord.ERROR_INVALID_OPERATION) {
+ Log.e(TAG, "Recording object not initalized");
+ } else if (bytes == AudioRecord.ERROR_BAD_VALUE) {
+ Log.e(TAG, "Invalid recording parameters");
+ } else {
+ Log.e(TAG, "Error during recording");
+ }
+ return;
+ }
+ position += bytes;
+ }
+ }
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SequenceExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SequenceExperiment.java
new file mode 100644
index 0000000..26a9a1d
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SequenceExperiment.java
@@ -0,0 +1,66 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * An extension to LoopbackExperiment, in which the "playback and record"
+ * cycle is repeated several times. A family of stimuli is defined, and
+ * the experiment outcome may depend on the whole sequence of recordings.
+ */
+public class SequenceExperiment extends LoopbackExperiment {
+ public SequenceExperiment(boolean enable) {
+ super(enable);
+ }
+
+ protected int getTrials() {
+ return 1;
+ }
+
+ protected byte[] getStim(Context context, int trial) {
+ int stimNum = 2;
+ byte[] data = Utils.getStim(context, stimNum);
+ return data;
+ }
+
+ protected void compare(byte[][] stim, byte[][] record) {
+ setScore(getString(R.string.aq_complete));
+ setReport(getString(R.string.aq_loopback_report));
+ }
+
+ @Override
+ public void run() {
+ int n = getTrials();
+ byte[][] playbackData = new byte[n][];
+ byte[][] recordedData = new byte[n][];
+ for (int trial = 0; trial < n; trial++) {
+ playbackData[trial] = getStim(mContext, trial);
+ recordedData[trial] = loopback(playbackData[trial]);
+ }
+ compare(playbackData, recordedData);
+ mTerminator.terminate(false);
+ }
+
+ @Override
+ public int getTimeout() {
+ return TIMEOUT * getTrials();
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SoundLevelExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SoundLevelExperiment.java
new file mode 100644
index 0000000..4435f31
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SoundLevelExperiment.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.CalibrateVolumeActivity;
+import com.android.cts.verifier.audioquality.Native;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * Experiment to verify that the sound level has been correctly set.
+ *
+ * This experiment should be run first; if it fails the others may
+ * fail also.
+ */
+public class SoundLevelExperiment extends LoopbackExperiment {
+ private static final float ONSET_THRESH = 10.0f;
+ private static final int DURATION = 2;
+ private static final float TOLERANCE = 1.05f;
+ private static final float FREQ = 625.0f;
+ private static final float RAMP = 0.0f;
+
+ public SoundLevelExperiment() {
+ super(true);
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_sound_level_exp);
+ }
+
+ @Override
+ protected byte[] getStim(Context context) {
+ if (CalibrateVolumeActivity.USE_PINK) {
+ return Utils.getPinkNoise(context, CalibrateVolumeActivity.OUTPUT_AMPL, DURATION);
+ } else {
+ short[] sinusoid = mNative.generateSinusoid(FREQ, DURATION,
+ AudioQualityVerifierActivity.SAMPLE_RATE, CalibrateVolumeActivity.OUTPUT_AMPL, RAMP);
+ return Utils.shortToByteArray(sinusoid);
+ }
+ }
+
+ @Override
+ protected void compare(byte[] stim, byte[] record) {
+ short[] pcm = Utils.byteToShortArray(record);
+ float[] results = mNative.measureRms(pcm, AudioQualityVerifierActivity.SAMPLE_RATE, ONSET_THRESH);
+ float rms = results[Native.MEASURE_RMS_RMS];
+ float duration = results[Native.MEASURE_RMS_DURATION];
+ String delta;
+ if (rms * TOLERANCE < CalibrateVolumeActivity.TARGET_RMS) {
+ setScore(getString(R.string.aq_fail));
+ delta = getString(R.string.aq_status_low);
+ } else if (rms > CalibrateVolumeActivity.TARGET_RMS * TOLERANCE) {
+ setScore(getString(R.string.aq_fail));
+ delta = getString(R.string.aq_status_high);
+ } else {
+ setScore(getString(R.string.aq_pass));
+ delta = getString(R.string.aq_status_ok);
+ }
+ setReport(delta + ".\n" + String.format(getString(R.string.aq_level_report),
+ rms, CalibrateVolumeActivity.TARGET_RMS,
+ 100.0f * (TOLERANCE - 1.0f), duration));
+ }
+}
diff --git a/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SpectrumShapeExperiment.java b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SpectrumShapeExperiment.java
new file mode 100644
index 0000000..148fb471
--- /dev/null
+++ b/apps/CtsVerifier/src/com/android/cts/verifier/audioquality/experiments/SpectrumShapeExperiment.java
@@ -0,0 +1,70 @@
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.cts.verifier.audioquality.experiments;
+
+import com.android.cts.verifier.R;
+import com.android.cts.verifier.audioquality.AudioQualityVerifierActivity;
+import com.android.cts.verifier.audioquality.Native;
+import com.android.cts.verifier.audioquality.Utils;
+
+import android.content.Context;
+
+/**
+ * Experiment to check that the frequency profile of the recorded signal
+ * does not differ too much from the stimulus.
+ */
+public class SpectrumShapeExperiment extends LoopbackExperiment {
+ private static final float MAX_RMS_DEVIATION = 7.0f;
+ private static final int AMPL = 10000;
+ private static final int DURATION = 3;
+
+ public SpectrumShapeExperiment() {
+ super(true);
+ }
+
+ @Override
+ protected String lookupName(Context context) {
+ return context.getString(R.string.aq_spectrum_shape_exp);
+ }
+
+ @Override
+ protected byte[] getStim(Context context) {
+ return Utils.getPinkNoise(context, AMPL, DURATION);
+ }
+
+ @Override
+ protected void compare(byte[] stim, byte[] record) {
+ short[] pcm = Utils.byteToShortArray(record);
+ short[] refPcm = Utils.byteToShortArray(stim);
+ float[] ret = mNative.compareSpectra(pcm, refPcm, AudioQualityVerifierActivity.SAMPLE_RATE);
+ float maxDeviation = ret[Native.SPECTRUM_MAX_DEVIATION];
+ float error = ret[Native.SPECTRUM_ERROR];
+ float rmsDeviation = ret[Native.SPECTRUM_RMS_DEVIATION];
+ if (error < 0.0f) {
+ setScore(getString(R.string.aq_fail));
+ setReport(getString(R.string.aq_spectrum_report_error));
+ } else if (rmsDeviation > MAX_RMS_DEVIATION) {
+ setScore(getString(R.string.aq_fail));
+ setReport(String.format(getString(R.string.aq_spectrum_report_normal),
+ rmsDeviation, MAX_RMS_DEVIATION));
+ } else {
+ setScore(getString(R.string.aq_pass));
+ setReport(String.format(getString(R.string.aq_spectrum_report_normal),
+ rmsDeviation, MAX_RMS_DEVIATION));
+ }
+ }
+}
