| /* |
| * Copyright (C) 2008 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. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| |
| #define LOG_TAG "AudioRecord-JNI" |
| |
| #include <inttypes.h> |
| #include <jni.h> |
| #include <JNIHelp.h> |
| #include <android_runtime/AndroidRuntime.h> |
| |
| #include <utils/Log.h> |
| #include <media/AudioRecord.h> |
| |
| #include "android_media_AudioFormat.h" |
| #include "android_media_AudioErrors.h" |
| |
| // ---------------------------------------------------------------------------- |
| |
| using namespace android; |
| |
| // ---------------------------------------------------------------------------- |
| static const char* const kClassPathName = "android/media/AudioRecord"; |
| static const char* const kAudioAttributesClassPathName = "android/media/AudioAttributes"; |
| |
| struct audio_record_fields_t { |
| // these fields provide access from C++ to the... |
| jmethodID postNativeEventInJava; //... event post callback method |
| jfieldID nativeRecorderInJavaObj; // provides access to the C++ AudioRecord object |
| jfieldID nativeCallbackCookie; // provides access to the AudioRecord callback data |
| }; |
| struct audio_attributes_fields_t { |
| jfieldID fieldRecSource; // AudioAttributes.mSource |
| jfieldID fieldFormattedTags;// AudioAttributes.mFormattedTags |
| }; |
| static audio_attributes_fields_t javaAudioAttrFields; |
| static audio_record_fields_t javaAudioRecordFields; |
| |
| struct audiorecord_callback_cookie { |
| jclass audioRecord_class; |
| jobject audioRecord_ref; |
| bool busy; |
| Condition cond; |
| }; |
| |
| static Mutex sLock; |
| static SortedVector <audiorecord_callback_cookie *> sAudioRecordCallBackCookies; |
| |
| // ---------------------------------------------------------------------------- |
| |
| #define AUDIORECORD_ERROR_SETUP_ZEROFRAMECOUNT -16 |
| #define AUDIORECORD_ERROR_SETUP_INVALIDCHANNELMASK -17 |
| #define AUDIORECORD_ERROR_SETUP_INVALIDFORMAT -18 |
| #define AUDIORECORD_ERROR_SETUP_INVALIDSOURCE -19 |
| #define AUDIORECORD_ERROR_SETUP_NATIVEINITFAILED -20 |
| |
| // ---------------------------------------------------------------------------- |
| static void recorderCallback(int event, void* user, void *info) { |
| |
| audiorecord_callback_cookie *callbackInfo = (audiorecord_callback_cookie *)user; |
| { |
| Mutex::Autolock l(sLock); |
| if (sAudioRecordCallBackCookies.indexOf(callbackInfo) < 0) { |
| return; |
| } |
| callbackInfo->busy = true; |
| } |
| |
| switch (event) { |
| case AudioRecord::EVENT_MARKER: { |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| if (user != NULL && env != NULL) { |
| env->CallStaticVoidMethod( |
| callbackInfo->audioRecord_class, |
| javaAudioRecordFields.postNativeEventInJava, |
| callbackInfo->audioRecord_ref, event, 0,0, NULL); |
| if (env->ExceptionCheck()) { |
| env->ExceptionDescribe(); |
| env->ExceptionClear(); |
| } |
| } |
| } break; |
| |
| case AudioRecord::EVENT_NEW_POS: { |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| if (user != NULL && env != NULL) { |
| env->CallStaticVoidMethod( |
| callbackInfo->audioRecord_class, |
| javaAudioRecordFields.postNativeEventInJava, |
| callbackInfo->audioRecord_ref, event, 0,0, NULL); |
| if (env->ExceptionCheck()) { |
| env->ExceptionDescribe(); |
| env->ExceptionClear(); |
| } |
| } |
| } break; |
| } |
| |
| { |
| Mutex::Autolock l(sLock); |
| callbackInfo->busy = false; |
| callbackInfo->cond.broadcast(); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| static sp<AudioRecord> getAudioRecord(JNIEnv* env, jobject thiz) |
| { |
| Mutex::Autolock l(sLock); |
| AudioRecord* const ar = |
| (AudioRecord*)env->GetLongField(thiz, javaAudioRecordFields.nativeRecorderInJavaObj); |
| return sp<AudioRecord>(ar); |
| } |
| |
| static sp<AudioRecord> setAudioRecord(JNIEnv* env, jobject thiz, const sp<AudioRecord>& ar) |
| { |
| Mutex::Autolock l(sLock); |
| sp<AudioRecord> old = |
| (AudioRecord*)env->GetLongField(thiz, javaAudioRecordFields.nativeRecorderInJavaObj); |
| if (ar.get()) { |
| ar->incStrong((void*)setAudioRecord); |
| } |
| if (old != 0) { |
| old->decStrong((void*)setAudioRecord); |
| } |
| env->SetLongField(thiz, javaAudioRecordFields.nativeRecorderInJavaObj, (jlong)ar.get()); |
| return old; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| static jint |
| android_media_AudioRecord_setup(JNIEnv *env, jobject thiz, jobject weak_this, |
| jobject jaa, jint sampleRateInHertz, jint channelMask, |
| // Java channel masks map directly to the native definition |
| jint audioFormat, jint buffSizeInBytes, jintArray jSession) |
| { |
| //ALOGV(">> Entering android_media_AudioRecord_setup"); |
| //ALOGV("sampleRate=%d, audioFormat=%d, channel mask=%x, buffSizeInBytes=%d", |
| // sampleRateInHertz, audioFormat, channelMask, buffSizeInBytes); |
| |
| if (jaa == 0) { |
| ALOGE("Error creating AudioRecord: invalid audio attributes"); |
| return (jint) AUDIO_JAVA_ERROR; |
| } |
| |
| if (!audio_is_input_channel(channelMask)) { |
| ALOGE("Error creating AudioRecord: channel mask %#x is not valid.", channelMask); |
| return (jint) AUDIORECORD_ERROR_SETUP_INVALIDCHANNELMASK; |
| } |
| uint32_t channelCount = audio_channel_count_from_in_mask(channelMask); |
| |
| // compare the format against the Java constants |
| audio_format_t format = audioFormatToNative(audioFormat); |
| if (format == AUDIO_FORMAT_INVALID) { |
| ALOGE("Error creating AudioRecord: unsupported audio format %d.", audioFormat); |
| return (jint) AUDIORECORD_ERROR_SETUP_INVALIDFORMAT; |
| } |
| |
| size_t bytesPerSample = audio_bytes_per_sample(format); |
| |
| if (buffSizeInBytes == 0) { |
| ALOGE("Error creating AudioRecord: frameCount is 0."); |
| return (jint) AUDIORECORD_ERROR_SETUP_ZEROFRAMECOUNT; |
| } |
| size_t frameSize = channelCount * bytesPerSample; |
| size_t frameCount = buffSizeInBytes / frameSize; |
| |
| jclass clazz = env->GetObjectClass(thiz); |
| if (clazz == NULL) { |
| ALOGE("Can't find %s when setting up callback.", kClassPathName); |
| return (jint) AUDIORECORD_ERROR_SETUP_NATIVEINITFAILED; |
| } |
| |
| if (jSession == NULL) { |
| ALOGE("Error creating AudioRecord: invalid session ID pointer"); |
| return (jint) AUDIO_JAVA_ERROR; |
| } |
| |
| jint* nSession = (jint *) env->GetPrimitiveArrayCritical(jSession, NULL); |
| if (nSession == NULL) { |
| ALOGE("Error creating AudioRecord: Error retrieving session id pointer"); |
| return (jint) AUDIO_JAVA_ERROR; |
| } |
| int sessionId = nSession[0]; |
| env->ReleasePrimitiveArrayCritical(jSession, nSession, 0); |
| nSession = NULL; |
| |
| // create an uninitialized AudioRecord object |
| sp<AudioRecord> lpRecorder = new AudioRecord(); |
| |
| audio_attributes_t *paa = NULL; |
| // read the AudioAttributes values |
| paa = (audio_attributes_t *) calloc(1, sizeof(audio_attributes_t)); |
| const jstring jtags = |
| (jstring) env->GetObjectField(jaa, javaAudioAttrFields.fieldFormattedTags); |
| const char* tags = env->GetStringUTFChars(jtags, NULL); |
| // copying array size -1, char array for tags was calloc'd, no need to NULL-terminate it |
| strncpy(paa->tags, tags, AUDIO_ATTRIBUTES_TAGS_MAX_SIZE - 1); |
| env->ReleaseStringUTFChars(jtags, tags); |
| paa->source = (audio_source_t) env->GetIntField(jaa, javaAudioAttrFields.fieldRecSource); |
| |
| ALOGV("AudioRecord_setup for source=%d tags=%s", paa->source, paa->tags); |
| |
| // create the callback information: |
| // this data will be passed with every AudioRecord callback |
| audiorecord_callback_cookie *lpCallbackData = new audiorecord_callback_cookie; |
| lpCallbackData->audioRecord_class = (jclass)env->NewGlobalRef(clazz); |
| // we use a weak reference so the AudioRecord object can be garbage collected. |
| lpCallbackData->audioRecord_ref = env->NewGlobalRef(weak_this); |
| lpCallbackData->busy = false; |
| |
| const status_t status = lpRecorder->set(paa->source, |
| sampleRateInHertz, |
| format, // word length, PCM |
| channelMask, |
| frameCount, |
| recorderCallback,// callback_t |
| lpCallbackData,// void* user |
| 0, // notificationFrames, |
| true, // threadCanCallJava |
| sessionId); |
| |
| if (status != NO_ERROR) { |
| ALOGE("Error creating AudioRecord instance: initialization check failed with status %d.", |
| status); |
| goto native_init_failure; |
| } |
| |
| nSession = (jint *) env->GetPrimitiveArrayCritical(jSession, NULL); |
| if (nSession == NULL) { |
| ALOGE("Error creating AudioRecord: Error retrieving session id pointer"); |
| goto native_init_failure; |
| } |
| // read the audio session ID back from AudioRecord in case a new session was created during set() |
| nSession[0] = lpRecorder->getSessionId(); |
| env->ReleasePrimitiveArrayCritical(jSession, nSession, 0); |
| nSession = NULL; |
| |
| { // scope for the lock |
| Mutex::Autolock l(sLock); |
| sAudioRecordCallBackCookies.add(lpCallbackData); |
| } |
| // save our newly created C++ AudioRecord in the "nativeRecorderInJavaObj" field |
| // of the Java object |
| setAudioRecord(env, thiz, lpRecorder); |
| |
| // save our newly created callback information in the "nativeCallbackCookie" field |
| // of the Java object (in mNativeCallbackCookie) so we can free the memory in finalize() |
| env->SetLongField(thiz, javaAudioRecordFields.nativeCallbackCookie, (jlong)lpCallbackData); |
| |
| return (jint) AUDIO_JAVA_SUCCESS; |
| |
| // failure: |
| native_init_failure: |
| env->DeleteGlobalRef(lpCallbackData->audioRecord_class); |
| env->DeleteGlobalRef(lpCallbackData->audioRecord_ref); |
| delete lpCallbackData; |
| env->SetLongField(thiz, javaAudioRecordFields.nativeCallbackCookie, 0); |
| |
| return (jint) AUDIORECORD_ERROR_SETUP_NATIVEINITFAILED; |
| } |
| |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint |
| android_media_AudioRecord_start(JNIEnv *env, jobject thiz, jint event, jint triggerSession) |
| { |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder == NULL ) { |
| jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| return (jint) AUDIO_JAVA_ERROR; |
| } |
| |
| return nativeToJavaStatus( |
| lpRecorder->start((AudioSystem::sync_event_t)event, triggerSession)); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static void |
| android_media_AudioRecord_stop(JNIEnv *env, jobject thiz) |
| { |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder == NULL ) { |
| jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| return; |
| } |
| |
| lpRecorder->stop(); |
| //ALOGV("Called lpRecorder->stop()"); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| |
| #define CALLBACK_COND_WAIT_TIMEOUT_MS 1000 |
| static void android_media_AudioRecord_release(JNIEnv *env, jobject thiz) { |
| sp<AudioRecord> lpRecorder = setAudioRecord(env, thiz, 0); |
| if (lpRecorder == NULL) { |
| return; |
| } |
| ALOGV("About to delete lpRecorder: %p", lpRecorder.get()); |
| lpRecorder->stop(); |
| |
| audiorecord_callback_cookie *lpCookie = (audiorecord_callback_cookie *)env->GetLongField( |
| thiz, javaAudioRecordFields.nativeCallbackCookie); |
| |
| // reset the native resources in the Java object so any attempt to access |
| // them after a call to release fails. |
| env->SetLongField(thiz, javaAudioRecordFields.nativeCallbackCookie, 0); |
| |
| // delete the callback information |
| if (lpCookie) { |
| Mutex::Autolock l(sLock); |
| ALOGV("deleting lpCookie: %p", lpCookie); |
| while (lpCookie->busy) { |
| if (lpCookie->cond.waitRelative(sLock, |
| milliseconds(CALLBACK_COND_WAIT_TIMEOUT_MS)) != |
| NO_ERROR) { |
| break; |
| } |
| } |
| sAudioRecordCallBackCookies.remove(lpCookie); |
| env->DeleteGlobalRef(lpCookie->audioRecord_class); |
| env->DeleteGlobalRef(lpCookie->audioRecord_ref); |
| delete lpCookie; |
| } |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static void android_media_AudioRecord_finalize(JNIEnv *env, jobject thiz) { |
| android_media_AudioRecord_release(env, thiz); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_readInByteArray(JNIEnv *env, jobject thiz, |
| jbyteArray javaAudioData, |
| jint offsetInBytes, jint sizeInBytes) { |
| jbyte* recordBuff = NULL; |
| // get the audio recorder from which we'll read new audio samples |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder == NULL) { |
| ALOGE("Unable to retrieve AudioRecord object, can't record"); |
| return 0; |
| } |
| |
| if (!javaAudioData) { |
| ALOGE("Invalid Java array to store recorded audio, can't record"); |
| return 0; |
| } |
| |
| // get the pointer to where we'll record the audio |
| // NOTE: We may use GetPrimitiveArrayCritical() when the JNI implementation changes in such |
| // a way that it becomes much more efficient. When doing so, we will have to prevent the |
| // AudioSystem callback to be called while in critical section (in case of media server |
| // process crash for instance) |
| recordBuff = (jbyte *)env->GetByteArrayElements(javaAudioData, NULL); |
| |
| if (recordBuff == NULL) { |
| ALOGE("Error retrieving destination for recorded audio data, can't record"); |
| return 0; |
| } |
| |
| // read the new audio data from the native AudioRecord object |
| ssize_t recorderBuffSize = lpRecorder->frameCount()*lpRecorder->frameSize(); |
| ssize_t readSize = lpRecorder->read(recordBuff + offsetInBytes, |
| sizeInBytes > (jint)recorderBuffSize ? |
| (jint)recorderBuffSize : sizeInBytes ); |
| env->ReleaseByteArrayElements(javaAudioData, recordBuff, 0); |
| |
| if (readSize < 0) { |
| readSize = (jint)AUDIO_JAVA_INVALID_OPERATION; |
| } |
| return (jint) readSize; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_readInShortArray(JNIEnv *env, jobject thiz, |
| jshortArray javaAudioData, |
| jint offsetInShorts, jint sizeInShorts) { |
| |
| jshort* recordBuff = NULL; |
| // get the audio recorder from which we'll read new audio samples |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder == NULL) { |
| ALOGE("Unable to retrieve AudioRecord object, can't record"); |
| return 0; |
| } |
| |
| if (!javaAudioData) { |
| ALOGE("Invalid Java array to store recorded audio, can't record"); |
| return 0; |
| } |
| |
| // get the pointer to where we'll record the audio |
| // NOTE: We may use GetPrimitiveArrayCritical() when the JNI implementation changes in such |
| // a way that it becomes much more efficient. When doing so, we will have to prevent the |
| // AudioSystem callback to be called while in critical section (in case of media server |
| // process crash for instance) |
| recordBuff = (jshort *)env->GetShortArrayElements(javaAudioData, NULL); |
| |
| if (recordBuff == NULL) { |
| ALOGE("Error retrieving destination for recorded audio data, can't record"); |
| return 0; |
| } |
| |
| // read the new audio data from the native AudioRecord object |
| const size_t recorderBuffSize = lpRecorder->frameCount()*lpRecorder->frameSize(); |
| const size_t sizeInBytes = sizeInShorts * sizeof(short); |
| ssize_t readSize = lpRecorder->read(recordBuff + offsetInShorts * sizeof(short), |
| sizeInBytes > recorderBuffSize ? |
| recorderBuffSize : sizeInBytes); |
| |
| env->ReleaseShortArrayElements(javaAudioData, recordBuff, 0); |
| |
| if (readSize < 0) { |
| readSize = (jint)AUDIO_JAVA_INVALID_OPERATION; |
| } else { |
| readSize /= sizeof(short); |
| } |
| return (jint) readSize; |
| } |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_readInDirectBuffer(JNIEnv *env, jobject thiz, |
| jobject jBuffer, jint sizeInBytes) { |
| // get the audio recorder from which we'll read new audio samples |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder==NULL) |
| return 0; |
| |
| // direct buffer and direct access supported? |
| long capacity = env->GetDirectBufferCapacity(jBuffer); |
| if (capacity == -1) { |
| // buffer direct access is not supported |
| ALOGE("Buffer direct access is not supported, can't record"); |
| return 0; |
| } |
| //ALOGV("capacity = %ld", capacity); |
| jbyte* nativeFromJavaBuf = (jbyte*) env->GetDirectBufferAddress(jBuffer); |
| if (nativeFromJavaBuf==NULL) { |
| ALOGE("Buffer direct access is not supported, can't record"); |
| return 0; |
| } |
| |
| // read new data from the recorder |
| ssize_t readSize = lpRecorder->read(nativeFromJavaBuf, |
| capacity < sizeInBytes ? capacity : sizeInBytes); |
| if (readSize < 0) { |
| readSize = (jint)AUDIO_JAVA_INVALID_OPERATION; |
| } |
| return (jint)readSize; |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_set_marker_pos(JNIEnv *env, jobject thiz, |
| jint markerPos) { |
| |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| if (lpRecorder == NULL) { |
| jniThrowException(env, "java/lang/IllegalStateException", |
| "Unable to retrieve AudioRecord pointer for setMarkerPosition()"); |
| return (jint)AUDIO_JAVA_ERROR; |
| } |
| return nativeToJavaStatus( lpRecorder->setMarkerPosition(markerPos) ); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_get_marker_pos(JNIEnv *env, jobject thiz) { |
| |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| uint32_t markerPos = 0; |
| |
| if (lpRecorder == NULL) { |
| jniThrowException(env, "java/lang/IllegalStateException", |
| "Unable to retrieve AudioRecord pointer for getMarkerPosition()"); |
| return (jint)AUDIO_JAVA_ERROR; |
| } |
| lpRecorder->getMarkerPosition(&markerPos); |
| return (jint)markerPos; |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_set_pos_update_period(JNIEnv *env, jobject thiz, |
| jint period) { |
| |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| |
| if (lpRecorder == NULL) { |
| jniThrowException(env, "java/lang/IllegalStateException", |
| "Unable to retrieve AudioRecord pointer for setPositionUpdatePeriod()"); |
| return (jint)AUDIO_JAVA_ERROR; |
| } |
| return nativeToJavaStatus( lpRecorder->setPositionUpdatePeriod(period) ); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| static jint android_media_AudioRecord_get_pos_update_period(JNIEnv *env, jobject thiz) { |
| |
| sp<AudioRecord> lpRecorder = getAudioRecord(env, thiz); |
| uint32_t period = 0; |
| |
| if (lpRecorder == NULL) { |
| jniThrowException(env, "java/lang/IllegalStateException", |
| "Unable to retrieve AudioRecord pointer for getPositionUpdatePeriod()"); |
| return (jint)AUDIO_JAVA_ERROR; |
| } |
| lpRecorder->getPositionUpdatePeriod(&period); |
| return (jint)period; |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| // returns the minimum required size for the successful creation of an AudioRecord instance. |
| // returns 0 if the parameter combination is not supported. |
| // return -1 if there was an error querying the buffer size. |
| static jint android_media_AudioRecord_get_min_buff_size(JNIEnv *env, jobject thiz, |
| jint sampleRateInHertz, jint channelCount, jint audioFormat) { |
| |
| ALOGV(">> android_media_AudioRecord_get_min_buff_size(%d, %d, %d)", |
| sampleRateInHertz, channelCount, audioFormat); |
| |
| size_t frameCount = 0; |
| audio_format_t format = audioFormatToNative(audioFormat); |
| status_t result = AudioRecord::getMinFrameCount(&frameCount, |
| sampleRateInHertz, |
| format, |
| audio_channel_in_mask_from_count(channelCount)); |
| |
| if (result == BAD_VALUE) { |
| return 0; |
| } |
| if (result != NO_ERROR) { |
| return -1; |
| } |
| return frameCount * channelCount * audio_bytes_per_sample(format); |
| } |
| |
| |
| // ---------------------------------------------------------------------------- |
| // ---------------------------------------------------------------------------- |
| static JNINativeMethod gMethods[] = { |
| // name, signature, funcPtr |
| {"native_start", "(II)I", (void *)android_media_AudioRecord_start}, |
| {"native_stop", "()V", (void *)android_media_AudioRecord_stop}, |
| {"native_setup", "(Ljava/lang/Object;Ljava/lang/Object;IIII[I)I", |
| (void *)android_media_AudioRecord_setup}, |
| {"native_finalize", "()V", (void *)android_media_AudioRecord_finalize}, |
| {"native_release", "()V", (void *)android_media_AudioRecord_release}, |
| {"native_read_in_byte_array", |
| "([BII)I", (void *)android_media_AudioRecord_readInByteArray}, |
| {"native_read_in_short_array", |
| "([SII)I", (void *)android_media_AudioRecord_readInShortArray}, |
| {"native_read_in_direct_buffer","(Ljava/lang/Object;I)I", |
| (void *)android_media_AudioRecord_readInDirectBuffer}, |
| {"native_set_marker_pos","(I)I", (void *)android_media_AudioRecord_set_marker_pos}, |
| {"native_get_marker_pos","()I", (void *)android_media_AudioRecord_get_marker_pos}, |
| {"native_set_pos_update_period", |
| "(I)I", (void *)android_media_AudioRecord_set_pos_update_period}, |
| {"native_get_pos_update_period", |
| "()I", (void *)android_media_AudioRecord_get_pos_update_period}, |
| {"native_get_min_buff_size", |
| "(III)I", (void *)android_media_AudioRecord_get_min_buff_size}, |
| }; |
| |
| // field names found in android/media/AudioRecord.java |
| #define JAVA_POSTEVENT_CALLBACK_NAME "postEventFromNative" |
| #define JAVA_NATIVERECORDERINJAVAOBJ_FIELD_NAME "mNativeRecorderInJavaObj" |
| #define JAVA_NATIVECALLBACKINFO_FIELD_NAME "mNativeCallbackCookie" |
| |
| // ---------------------------------------------------------------------------- |
| int register_android_media_AudioRecord(JNIEnv *env) |
| { |
| javaAudioRecordFields.postNativeEventInJava = NULL; |
| javaAudioRecordFields.nativeRecorderInJavaObj = NULL; |
| javaAudioRecordFields.nativeCallbackCookie = NULL; |
| |
| |
| // Get the AudioRecord class |
| jclass audioRecordClass = env->FindClass(kClassPathName); |
| if (audioRecordClass == NULL) { |
| ALOGE("Can't find %s", kClassPathName); |
| return -1; |
| } |
| // Get the postEvent method |
| javaAudioRecordFields.postNativeEventInJava = env->GetStaticMethodID( |
| audioRecordClass, |
| JAVA_POSTEVENT_CALLBACK_NAME, "(Ljava/lang/Object;IIILjava/lang/Object;)V"); |
| if (javaAudioRecordFields.postNativeEventInJava == NULL) { |
| ALOGE("Can't find AudioRecord.%s", JAVA_POSTEVENT_CALLBACK_NAME); |
| return -1; |
| } |
| |
| // Get the variables |
| // mNativeRecorderInJavaObj |
| javaAudioRecordFields.nativeRecorderInJavaObj = |
| env->GetFieldID(audioRecordClass, |
| JAVA_NATIVERECORDERINJAVAOBJ_FIELD_NAME, "J"); |
| if (javaAudioRecordFields.nativeRecorderInJavaObj == NULL) { |
| ALOGE("Can't find AudioRecord.%s", JAVA_NATIVERECORDERINJAVAOBJ_FIELD_NAME); |
| return -1; |
| } |
| // mNativeCallbackCookie |
| javaAudioRecordFields.nativeCallbackCookie = env->GetFieldID( |
| audioRecordClass, |
| JAVA_NATIVECALLBACKINFO_FIELD_NAME, "J"); |
| if (javaAudioRecordFields.nativeCallbackCookie == NULL) { |
| ALOGE("Can't find AudioRecord.%s", JAVA_NATIVECALLBACKINFO_FIELD_NAME); |
| return -1; |
| } |
| |
| // Get the AudioAttributes class and fields |
| jclass audioAttrClass = env->FindClass(kAudioAttributesClassPathName); |
| if (audioAttrClass == NULL) { |
| ALOGE("Can't find %s", kAudioAttributesClassPathName); |
| return -1; |
| } |
| jclass audioAttributesClassRef = (jclass)env->NewGlobalRef(audioAttrClass); |
| javaAudioAttrFields.fieldRecSource = env->GetFieldID(audioAttributesClassRef, "mSource", "I"); |
| javaAudioAttrFields.fieldFormattedTags = |
| env->GetFieldID(audioAttributesClassRef, "mFormattedTags", "Ljava/lang/String;"); |
| env->DeleteGlobalRef(audioAttributesClassRef); |
| if (javaAudioAttrFields.fieldRecSource == NULL |
| || javaAudioAttrFields.fieldFormattedTags == NULL) { |
| ALOGE("Can't initialize AudioAttributes fields"); |
| return -1; |
| } |
| |
| return AndroidRuntime::registerNativeMethods(env, |
| kClassPathName, gMethods, NELEM(gMethods)); |
| } |
| |
| // ---------------------------------------------------------------------------- |
