| /* |
| * 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 "MediaRecorderJNI" |
| #include <utils/Log.h> |
| |
| #include <gui/Surface.h> |
| #include <camera/ICameraService.h> |
| #include <camera/Camera.h> |
| #include <media/mediarecorder.h> |
| #include <stdio.h> |
| #include <assert.h> |
| #include <limits.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| #include <utils/threads.h> |
| |
| #include "jni.h" |
| #include "JNIHelp.h" |
| #include "android_runtime/AndroidRuntime.h" |
| |
| #include <system/audio.h> |
| |
| // ---------------------------------------------------------------------------- |
| |
| using namespace android; |
| |
| // ---------------------------------------------------------------------------- |
| |
| // helper function to extract a native Camera object from a Camera Java object |
| extern sp<Camera> get_native_camera(JNIEnv *env, jobject thiz, struct JNICameraContext** context); |
| |
| struct fields_t { |
| jfieldID context; |
| jfieldID surface; |
| /* actually in android.view.Surface XXX */ |
| jfieldID surface_native; |
| |
| jmethodID post_event; |
| }; |
| static fields_t fields; |
| |
| static Mutex sLock; |
| |
| // ---------------------------------------------------------------------------- |
| // ref-counted object for callbacks |
| class JNIMediaRecorderListener: public MediaRecorderListener |
| { |
| public: |
| JNIMediaRecorderListener(JNIEnv* env, jobject thiz, jobject weak_thiz); |
| ~JNIMediaRecorderListener(); |
| void notify(int msg, int ext1, int ext2); |
| private: |
| JNIMediaRecorderListener(); |
| jclass mClass; // Reference to MediaRecorder class |
| jobject mObject; // Weak ref to MediaRecorder Java object to call on |
| }; |
| |
| JNIMediaRecorderListener::JNIMediaRecorderListener(JNIEnv* env, jobject thiz, jobject weak_thiz) |
| { |
| |
| // Hold onto the MediaRecorder class for use in calling the static method |
| // that posts events to the application thread. |
| jclass clazz = env->GetObjectClass(thiz); |
| if (clazz == NULL) { |
| ALOGE("Can't find android/media/MediaRecorder"); |
| jniThrowException(env, "java/lang/Exception", NULL); |
| return; |
| } |
| mClass = (jclass)env->NewGlobalRef(clazz); |
| |
| // We use a weak reference so the MediaRecorder object can be garbage collected. |
| // The reference is only used as a proxy for callbacks. |
| mObject = env->NewGlobalRef(weak_thiz); |
| } |
| |
| JNIMediaRecorderListener::~JNIMediaRecorderListener() |
| { |
| // remove global references |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| env->DeleteGlobalRef(mObject); |
| env->DeleteGlobalRef(mClass); |
| } |
| |
| void JNIMediaRecorderListener::notify(int msg, int ext1, int ext2) |
| { |
| ALOGV("JNIMediaRecorderListener::notify"); |
| |
| JNIEnv *env = AndroidRuntime::getJNIEnv(); |
| env->CallStaticVoidMethod(mClass, fields.post_event, mObject, msg, ext1, ext2, 0); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static sp<Surface> get_surface(JNIEnv* env, jobject clazz) |
| { |
| ALOGV("get_surface"); |
| Surface* const p = (Surface*)env->GetIntField(clazz, fields.surface_native); |
| return sp<Surface>(p); |
| } |
| |
| // Returns true if it throws an exception. |
| static bool process_media_recorder_call(JNIEnv *env, status_t opStatus, const char* exception, const char* message) |
| { |
| ALOGV("process_media_recorder_call"); |
| if (opStatus == (status_t)INVALID_OPERATION) { |
| jniThrowException(env, "java/lang/IllegalStateException", NULL); |
| return true; |
| } else if (opStatus != (status_t)OK) { |
| jniThrowException(env, exception, message); |
| return true; |
| } |
| return false; |
| } |
| |
| static sp<MediaRecorder> getMediaRecorder(JNIEnv* env, jobject thiz) |
| { |
| Mutex::Autolock l(sLock); |
| MediaRecorder* const p = (MediaRecorder*)env->GetIntField(thiz, fields.context); |
| return sp<MediaRecorder>(p); |
| } |
| |
| static sp<MediaRecorder> setMediaRecorder(JNIEnv* env, jobject thiz, const sp<MediaRecorder>& recorder) |
| { |
| Mutex::Autolock l(sLock); |
| sp<MediaRecorder> old = (MediaRecorder*)env->GetIntField(thiz, fields.context); |
| if (recorder.get()) { |
| recorder->incStrong(thiz); |
| } |
| if (old != 0) { |
| old->decStrong(thiz); |
| } |
| env->SetIntField(thiz, fields.context, (int)recorder.get()); |
| return old; |
| } |
| |
| |
| static void android_media_MediaRecorder_setCamera(JNIEnv* env, jobject thiz, jobject camera) |
| { |
| // we should not pass a null camera to get_native_camera() call. |
| if (camera == NULL) { |
| jniThrowNullPointerException(env, "camera object is a NULL pointer"); |
| return; |
| } |
| sp<Camera> c = get_native_camera(env, camera, NULL); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setCamera(c->remote(), c->getRecordingProxy()), |
| "java/lang/RuntimeException", "setCamera failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setVideoSource(JNIEnv *env, jobject thiz, jint vs) |
| { |
| ALOGV("setVideoSource(%d)", vs); |
| if (vs < VIDEO_SOURCE_DEFAULT || vs >= VIDEO_SOURCE_LIST_END) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video source"); |
| return; |
| } |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setVideoSource(vs), "java/lang/RuntimeException", "setVideoSource failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setAudioSource(JNIEnv *env, jobject thiz, jint as) |
| { |
| ALOGV("setAudioSource(%d)", as); |
| if (as < AUDIO_SOURCE_DEFAULT || as >= AUDIO_SOURCE_CNT) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio source"); |
| return; |
| } |
| |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setAudioSource(as), "java/lang/RuntimeException", "setAudioSource failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setOutputFormat(JNIEnv *env, jobject thiz, jint of) |
| { |
| ALOGV("setOutputFormat(%d)", of); |
| if (of < OUTPUT_FORMAT_DEFAULT || of >= OUTPUT_FORMAT_LIST_END) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid output format"); |
| return; |
| } |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setOutputFormat(of), "java/lang/RuntimeException", "setOutputFormat failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setVideoEncoder(JNIEnv *env, jobject thiz, jint ve) |
| { |
| ALOGV("setVideoEncoder(%d)", ve); |
| if (ve < VIDEO_ENCODER_DEFAULT || ve >= VIDEO_ENCODER_LIST_END) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video encoder"); |
| return; |
| } |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setVideoEncoder(ve), "java/lang/RuntimeException", "setVideoEncoder failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setAudioEncoder(JNIEnv *env, jobject thiz, jint ae) |
| { |
| ALOGV("setAudioEncoder(%d)", ae); |
| if (ae < AUDIO_ENCODER_DEFAULT || ae >= AUDIO_ENCODER_LIST_END) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio encoder"); |
| return; |
| } |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setAudioEncoder(ae), "java/lang/RuntimeException", "setAudioEncoder failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setParameter(JNIEnv *env, jobject thiz, jstring params) |
| { |
| ALOGV("setParameter()"); |
| if (params == NULL) |
| { |
| ALOGE("Invalid or empty params string. This parameter will be ignored."); |
| return; |
| } |
| |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| |
| const char* params8 = env->GetStringUTFChars(params, NULL); |
| if (params8 == NULL) |
| { |
| ALOGE("Failed to covert jstring to String8. This parameter will be ignored."); |
| return; |
| } |
| |
| process_media_recorder_call(env, mr->setParameters(String8(params8)), "java/lang/RuntimeException", "setParameter failed."); |
| env->ReleaseStringUTFChars(params,params8); |
| } |
| |
| static void |
| android_media_MediaRecorder_setOutputFileFD(JNIEnv *env, jobject thiz, jobject fileDescriptor, jlong offset, jlong length) |
| { |
| ALOGV("setOutputFile"); |
| if (fileDescriptor == NULL) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", NULL); |
| return; |
| } |
| int fd = jniGetFDFromFileDescriptor(env, fileDescriptor); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| status_t opStatus = mr->setOutputFile(fd, offset, length); |
| process_media_recorder_call(env, opStatus, "java/io/IOException", "setOutputFile failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setVideoSize(JNIEnv *env, jobject thiz, jint width, jint height) |
| { |
| ALOGV("setVideoSize(%d, %d)", width, height); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| |
| if (width <= 0 || height <= 0) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "invalid video size"); |
| return; |
| } |
| process_media_recorder_call(env, mr->setVideoSize(width, height), "java/lang/RuntimeException", "setVideoSize failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setVideoFrameRate(JNIEnv *env, jobject thiz, jint rate) |
| { |
| ALOGV("setVideoFrameRate(%d)", rate); |
| if (rate <= 0) { |
| jniThrowException(env, "java/lang/IllegalArgumentException", "invalid frame rate"); |
| return; |
| } |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->setVideoFrameRate(rate), "java/lang/RuntimeException", "setVideoFrameRate failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setMaxDuration(JNIEnv *env, jobject thiz, jint max_duration_ms) |
| { |
| ALOGV("setMaxDuration(%d)", max_duration_ms); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| |
| char params[64]; |
| sprintf(params, "max-duration=%d", max_duration_ms); |
| |
| process_media_recorder_call(env, mr->setParameters(String8(params)), "java/lang/RuntimeException", "setMaxDuration failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_setMaxFileSize( |
| JNIEnv *env, jobject thiz, jlong max_filesize_bytes) |
| { |
| ALOGV("setMaxFileSize(%lld)", max_filesize_bytes); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| |
| char params[64]; |
| sprintf(params, "max-filesize=%lld", max_filesize_bytes); |
| |
| process_media_recorder_call(env, mr->setParameters(String8(params)), "java/lang/RuntimeException", "setMaxFileSize failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_prepare(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("prepare"); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| |
| jobject surface = env->GetObjectField(thiz, fields.surface); |
| if (surface != NULL) { |
| const sp<Surface> native_surface = get_surface(env, surface); |
| |
| // The application may misbehave and |
| // the preview surface becomes unavailable |
| if (native_surface.get() == 0) { |
| ALOGE("Application lost the surface"); |
| jniThrowException(env, "java/io/IOException", "invalid preview surface"); |
| return; |
| } |
| |
| ALOGI("prepare: surface=%p (identity=%d)", native_surface.get(), native_surface->getIdentity()); |
| if (process_media_recorder_call(env, mr->setPreviewSurface(native_surface), "java/lang/RuntimeException", "setPreviewSurface failed.")) { |
| return; |
| } |
| } |
| process_media_recorder_call(env, mr->prepare(), "java/io/IOException", "prepare failed."); |
| } |
| |
| static int |
| android_media_MediaRecorder_native_getMaxAmplitude(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("getMaxAmplitude"); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| int result = 0; |
| process_media_recorder_call(env, mr->getMaxAmplitude(&result), "java/lang/RuntimeException", "getMaxAmplitude failed."); |
| return result; |
| } |
| |
| static void |
| android_media_MediaRecorder_start(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("start"); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->start(), "java/lang/RuntimeException", "start failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_stop(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("stop"); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->stop(), "java/lang/RuntimeException", "stop failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_native_reset(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("native_reset"); |
| sp<MediaRecorder> mr = getMediaRecorder(env, thiz); |
| process_media_recorder_call(env, mr->reset(), "java/lang/RuntimeException", "native_reset failed."); |
| } |
| |
| static void |
| android_media_MediaRecorder_release(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("release"); |
| sp<MediaRecorder> mr = setMediaRecorder(env, thiz, 0); |
| if (mr != NULL) { |
| mr->setListener(NULL); |
| mr->release(); |
| } |
| } |
| |
| // This function gets some field IDs, which in turn causes class initialization. |
| // It is called from a static block in MediaRecorder, which won't run until the |
| // first time an instance of this class is used. |
| static void |
| android_media_MediaRecorder_native_init(JNIEnv *env) |
| { |
| jclass clazz; |
| |
| clazz = env->FindClass("android/media/MediaRecorder"); |
| if (clazz == NULL) { |
| return; |
| } |
| |
| fields.context = env->GetFieldID(clazz, "mNativeContext", "I"); |
| if (fields.context == NULL) { |
| return; |
| } |
| |
| fields.surface = env->GetFieldID(clazz, "mSurface", "Landroid/view/Surface;"); |
| if (fields.surface == NULL) { |
| return; |
| } |
| |
| jclass surface = env->FindClass("android/view/Surface"); |
| if (surface == NULL) { |
| return; |
| } |
| |
| fields.surface_native = env->GetFieldID(surface, ANDROID_VIEW_SURFACE_JNI_ID, "I"); |
| if (fields.surface_native == NULL) { |
| return; |
| } |
| |
| fields.post_event = env->GetStaticMethodID(clazz, "postEventFromNative", |
| "(Ljava/lang/Object;IIILjava/lang/Object;)V"); |
| if (fields.post_event == NULL) { |
| return; |
| } |
| } |
| |
| |
| static void |
| android_media_MediaRecorder_native_setup(JNIEnv *env, jobject thiz, jobject weak_this) |
| { |
| ALOGV("setup"); |
| sp<MediaRecorder> mr = new MediaRecorder(); |
| if (mr == NULL) { |
| jniThrowException(env, "java/lang/RuntimeException", "Out of memory"); |
| return; |
| } |
| if (mr->initCheck() != NO_ERROR) { |
| jniThrowException(env, "java/lang/RuntimeException", "Unable to initialize media recorder"); |
| return; |
| } |
| |
| // create new listener and give it to MediaRecorder |
| sp<JNIMediaRecorderListener> listener = new JNIMediaRecorderListener(env, thiz, weak_this); |
| mr->setListener(listener); |
| |
| setMediaRecorder(env, thiz, mr); |
| } |
| |
| static void |
| android_media_MediaRecorder_native_finalize(JNIEnv *env, jobject thiz) |
| { |
| ALOGV("finalize"); |
| android_media_MediaRecorder_release(env, thiz); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static JNINativeMethod gMethods[] = { |
| {"setCamera", "(Landroid/hardware/Camera;)V", (void *)android_media_MediaRecorder_setCamera}, |
| {"setVideoSource", "(I)V", (void *)android_media_MediaRecorder_setVideoSource}, |
| {"setAudioSource", "(I)V", (void *)android_media_MediaRecorder_setAudioSource}, |
| {"setOutputFormat", "(I)V", (void *)android_media_MediaRecorder_setOutputFormat}, |
| {"setVideoEncoder", "(I)V", (void *)android_media_MediaRecorder_setVideoEncoder}, |
| {"setAudioEncoder", "(I)V", (void *)android_media_MediaRecorder_setAudioEncoder}, |
| {"setParameter", "(Ljava/lang/String;)V", (void *)android_media_MediaRecorder_setParameter}, |
| {"_setOutputFile", "(Ljava/io/FileDescriptor;JJ)V", (void *)android_media_MediaRecorder_setOutputFileFD}, |
| {"setVideoSize", "(II)V", (void *)android_media_MediaRecorder_setVideoSize}, |
| {"setVideoFrameRate", "(I)V", (void *)android_media_MediaRecorder_setVideoFrameRate}, |
| {"setMaxDuration", "(I)V", (void *)android_media_MediaRecorder_setMaxDuration}, |
| {"setMaxFileSize", "(J)V", (void *)android_media_MediaRecorder_setMaxFileSize}, |
| {"_prepare", "()V", (void *)android_media_MediaRecorder_prepare}, |
| {"getMaxAmplitude", "()I", (void *)android_media_MediaRecorder_native_getMaxAmplitude}, |
| {"start", "()V", (void *)android_media_MediaRecorder_start}, |
| {"stop", "()V", (void *)android_media_MediaRecorder_stop}, |
| {"native_reset", "()V", (void *)android_media_MediaRecorder_native_reset}, |
| {"release", "()V", (void *)android_media_MediaRecorder_release}, |
| {"native_init", "()V", (void *)android_media_MediaRecorder_native_init}, |
| {"native_setup", "(Ljava/lang/Object;)V", (void *)android_media_MediaRecorder_native_setup}, |
| {"native_finalize", "()V", (void *)android_media_MediaRecorder_native_finalize}, |
| }; |
| |
| static const char* const kClassPathName = "android/media/MediaRecorder"; |
| |
| // This function only registers the native methods, and is called from |
| // JNI_OnLoad in android_media_MediaPlayer.cpp |
| int register_android_media_MediaRecorder(JNIEnv *env) |
| { |
| return AndroidRuntime::registerNativeMethods(env, |
| "android/media/MediaRecorder", gMethods, NELEM(gMethods)); |
| } |