2 * Copyright (C) 2008 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
24 //#define LOG_NDEBUG 0
25 #define LOG_TAG "MediaRecorderJNI"
26 #include <utils/Log.h>
28 #include <gui/Surface.h>
29 #include <camera/ICameraService.h>
30 #include <camera/Camera.h>
31 #include <media/mediarecorder.h>
32 #include <utils/threads.h>
36 #include "android_runtime/AndroidRuntime.h"
38 #include <system/audio.h>
39 #include <android_runtime/android_view_Surface.h>
41 // ----------------------------------------------------------------------------
43 using namespace android;
45 // ----------------------------------------------------------------------------
47 // helper function to extract a native Camera object from a Camera Java object
48 extern sp<Camera> get_native_camera(JNIEnv *env, jobject thiz, struct JNICameraContext** context);
56 static fields_t fields;
60 // ----------------------------------------------------------------------------
61 // ref-counted object for callbacks
62 class JNIMediaRecorderListener: public MediaRecorderListener
65 JNIMediaRecorderListener(JNIEnv* env, jobject thiz, jobject weak_thiz);
66 ~JNIMediaRecorderListener();
67 void notify(int msg, int ext1, int ext2);
69 JNIMediaRecorderListener();
70 jclass mClass; // Reference to MediaRecorder class
71 jobject mObject; // Weak ref to MediaRecorder Java object to call on
74 JNIMediaRecorderListener::JNIMediaRecorderListener(JNIEnv* env, jobject thiz, jobject weak_thiz)
77 // Hold onto the MediaRecorder class for use in calling the static method
78 // that posts events to the application thread.
79 jclass clazz = env->GetObjectClass(thiz);
81 ALOGE("Can't find android/media/MediaRecorder");
82 jniThrowException(env, "java/lang/Exception", NULL);
85 mClass = (jclass)env->NewGlobalRef(clazz);
87 // We use a weak reference so the MediaRecorder object can be garbage collected.
88 // The reference is only used as a proxy for callbacks.
89 mObject = env->NewGlobalRef(weak_thiz);
92 JNIMediaRecorderListener::~JNIMediaRecorderListener()
94 // remove global references
95 JNIEnv *env = AndroidRuntime::getJNIEnv();
96 env->DeleteGlobalRef(mObject);
97 env->DeleteGlobalRef(mClass);
100 void JNIMediaRecorderListener::notify(int msg, int ext1, int ext2)
102 ALOGV("JNIMediaRecorderListener::notify");
104 JNIEnv *env = AndroidRuntime::getJNIEnv();
105 env->CallStaticVoidMethod(mClass, fields.post_event, mObject, msg, ext1, ext2, 0);
108 // ----------------------------------------------------------------------------
110 static sp<Surface> get_surface(JNIEnv* env, jobject clazz)
112 ALOGV("get_surface");
113 return android_view_Surface_getSurface(env, clazz);
116 // Returns true if it throws an exception.
117 static bool process_media_recorder_call(JNIEnv *env, status_t opStatus, const char* exception, const char* message)
119 ALOGV("process_media_recorder_call");
120 if (opStatus == (status_t)INVALID_OPERATION) {
121 jniThrowException(env, "java/lang/IllegalStateException", NULL);
123 } else if (opStatus != (status_t)OK) {
124 jniThrowException(env, exception, message);
130 static sp<MediaRecorder> getMediaRecorder(JNIEnv* env, jobject thiz)
132 Mutex::Autolock l(sLock);
133 MediaRecorder* const p = (MediaRecorder*)env->GetLongField(thiz, fields.context);
134 return sp<MediaRecorder>(p);
137 static sp<MediaRecorder> setMediaRecorder(JNIEnv* env, jobject thiz, const sp<MediaRecorder>& recorder)
139 Mutex::Autolock l(sLock);
140 sp<MediaRecorder> old = (MediaRecorder*)env->GetLongField(thiz, fields.context);
141 if (recorder.get()) {
142 recorder->incStrong(thiz);
145 old->decStrong(thiz);
147 env->SetLongField(thiz, fields.context, (jlong)recorder.get());
152 static void android_media_MediaRecorder_setCamera(JNIEnv* env, jobject thiz, jobject camera)
154 // we should not pass a null camera to get_native_camera() call.
155 if (camera == NULL) {
156 jniThrowNullPointerException(env, "camera object is a NULL pointer");
159 sp<Camera> c = get_native_camera(env, camera, NULL);
161 // get_native_camera will throw an exception in this case
164 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
165 process_media_recorder_call(env, mr->setCamera(c->remote(), c->getRecordingProxy()),
166 "java/lang/RuntimeException", "setCamera failed.");
170 android_media_MediaRecorder_setVideoSource(JNIEnv *env, jobject thiz, jint vs)
172 ALOGV("setVideoSource(%d)", vs);
173 if (vs < VIDEO_SOURCE_DEFAULT || vs >= VIDEO_SOURCE_LIST_END) {
174 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video source");
177 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
178 process_media_recorder_call(env, mr->setVideoSource(vs), "java/lang/RuntimeException", "setVideoSource failed.");
182 android_media_MediaRecorder_setAudioSource(JNIEnv *env, jobject thiz, jint as)
184 ALOGV("setAudioSource(%d)", as);
185 if (as < AUDIO_SOURCE_DEFAULT || as >= AUDIO_SOURCE_CNT) {
186 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio source");
190 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
191 process_media_recorder_call(env, mr->setAudioSource(as), "java/lang/RuntimeException", "setAudioSource failed.");
195 android_media_MediaRecorder_setOutputFormat(JNIEnv *env, jobject thiz, jint of)
197 ALOGV("setOutputFormat(%d)", of);
198 if (of < OUTPUT_FORMAT_DEFAULT || of >= OUTPUT_FORMAT_LIST_END) {
199 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid output format");
202 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
203 process_media_recorder_call(env, mr->setOutputFormat(of), "java/lang/RuntimeException", "setOutputFormat failed.");
207 android_media_MediaRecorder_setVideoEncoder(JNIEnv *env, jobject thiz, jint ve)
209 ALOGV("setVideoEncoder(%d)", ve);
210 if (ve < VIDEO_ENCODER_DEFAULT || ve >= VIDEO_ENCODER_LIST_END) {
211 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid video encoder");
214 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
215 process_media_recorder_call(env, mr->setVideoEncoder(ve), "java/lang/RuntimeException", "setVideoEncoder failed.");
219 android_media_MediaRecorder_setAudioEncoder(JNIEnv *env, jobject thiz, jint ae)
221 ALOGV("setAudioEncoder(%d)", ae);
222 if (ae < AUDIO_ENCODER_DEFAULT || ae >= AUDIO_ENCODER_LIST_END) {
223 jniThrowException(env, "java/lang/IllegalArgumentException", "Invalid audio encoder");
226 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
227 process_media_recorder_call(env, mr->setAudioEncoder(ae), "java/lang/RuntimeException", "setAudioEncoder failed.");
231 android_media_MediaRecorder_setParameter(JNIEnv *env, jobject thiz, jstring params)
233 ALOGV("setParameter()");
236 ALOGE("Invalid or empty params string. This parameter will be ignored.");
240 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
242 const char* params8 = env->GetStringUTFChars(params, NULL);
245 ALOGE("Failed to covert jstring to String8. This parameter will be ignored.");
249 process_media_recorder_call(env, mr->setParameters(String8(params8)), "java/lang/RuntimeException", "setParameter failed.");
250 env->ReleaseStringUTFChars(params,params8);
254 android_media_MediaRecorder_setOutputFileFD(JNIEnv *env, jobject thiz, jobject fileDescriptor, jlong offset, jlong length)
256 ALOGV("setOutputFile");
257 if (fileDescriptor == NULL) {
258 jniThrowException(env, "java/lang/IllegalArgumentException", NULL);
261 int fd = jniGetFDFromFileDescriptor(env, fileDescriptor);
262 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
263 status_t opStatus = mr->setOutputFile(fd, offset, length);
264 process_media_recorder_call(env, opStatus, "java/io/IOException", "setOutputFile failed.");
268 android_media_MediaRecorder_setVideoSize(JNIEnv *env, jobject thiz, jint width, jint height)
270 ALOGV("setVideoSize(%d, %d)", width, height);
271 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
273 if (width <= 0 || height <= 0) {
274 jniThrowException(env, "java/lang/IllegalArgumentException", "invalid video size");
277 process_media_recorder_call(env, mr->setVideoSize(width, height), "java/lang/RuntimeException", "setVideoSize failed.");
281 android_media_MediaRecorder_setVideoFrameRate(JNIEnv *env, jobject thiz, jint rate)
283 ALOGV("setVideoFrameRate(%d)", rate);
285 jniThrowException(env, "java/lang/IllegalArgumentException", "invalid frame rate");
288 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
289 process_media_recorder_call(env, mr->setVideoFrameRate(rate), "java/lang/RuntimeException", "setVideoFrameRate failed.");
293 android_media_MediaRecorder_setMaxDuration(JNIEnv *env, jobject thiz, jint max_duration_ms)
295 ALOGV("setMaxDuration(%d)", max_duration_ms);
296 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
299 sprintf(params, "max-duration=%d", max_duration_ms);
301 process_media_recorder_call(env, mr->setParameters(String8(params)), "java/lang/RuntimeException", "setMaxDuration failed.");
305 android_media_MediaRecorder_setMaxFileSize(
306 JNIEnv *env, jobject thiz, jlong max_filesize_bytes)
308 ALOGV("setMaxFileSize(%lld)", max_filesize_bytes);
309 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
312 sprintf(params, "max-filesize=%" PRId64, max_filesize_bytes);
314 process_media_recorder_call(env, mr->setParameters(String8(params)), "java/lang/RuntimeException", "setMaxFileSize failed.");
318 android_media_MediaRecorder_prepare(JNIEnv *env, jobject thiz)
321 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
323 jobject surface = env->GetObjectField(thiz, fields.surface);
324 if (surface != NULL) {
325 const sp<Surface> native_surface = get_surface(env, surface);
327 // The application may misbehave and
328 // the preview surface becomes unavailable
329 if (native_surface.get() == 0) {
330 ALOGE("Application lost the surface");
331 jniThrowException(env, "java/io/IOException", "invalid preview surface");
335 ALOGI("prepare: surface=%p", native_surface.get());
336 if (process_media_recorder_call(env, mr->setPreviewSurface(native_surface->getIGraphicBufferProducer()), "java/lang/RuntimeException", "setPreviewSurface failed.")) {
340 process_media_recorder_call(env, mr->prepare(), "java/io/IOException", "prepare failed.");
344 android_media_MediaRecorder_native_getMaxAmplitude(JNIEnv *env, jobject thiz)
346 ALOGV("getMaxAmplitude");
347 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
349 process_media_recorder_call(env, mr->getMaxAmplitude(&result), "java/lang/RuntimeException", "getMaxAmplitude failed.");
350 return (jint) result;
354 android_media_MediaRecorder_getSurface(JNIEnv *env, jobject thiz)
357 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
359 sp<IGraphicBufferProducer> bufferProducer = mr->querySurfaceMediaSourceFromMediaServer();
360 if (bufferProducer == NULL) {
363 "java/lang/IllegalStateException",
364 "failed to get surface");
368 // Wrap the IGBP in a Java-language Surface.
369 return android_view_Surface_createFromIGraphicBufferProducer(env,
374 android_media_MediaRecorder_start(JNIEnv *env, jobject thiz)
377 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
378 process_media_recorder_call(env, mr->start(), "java/lang/RuntimeException", "start failed.");
382 android_media_MediaRecorder_stop(JNIEnv *env, jobject thiz)
385 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
386 process_media_recorder_call(env, mr->stop(), "java/lang/RuntimeException", "stop failed.");
390 android_media_MediaRecorder_native_reset(JNIEnv *env, jobject thiz)
392 ALOGV("native_reset");
393 sp<MediaRecorder> mr = getMediaRecorder(env, thiz);
394 process_media_recorder_call(env, mr->reset(), "java/lang/RuntimeException", "native_reset failed.");
398 android_media_MediaRecorder_release(JNIEnv *env, jobject thiz)
401 sp<MediaRecorder> mr = setMediaRecorder(env, thiz, 0);
403 mr->setListener(NULL);
408 // This function gets some field IDs, which in turn causes class initialization.
409 // It is called from a static block in MediaRecorder, which won't run until the
410 // first time an instance of this class is used.
412 android_media_MediaRecorder_native_init(JNIEnv *env)
416 clazz = env->FindClass("android/media/MediaRecorder");
421 fields.context = env->GetFieldID(clazz, "mNativeContext", "J");
422 if (fields.context == NULL) {
426 fields.surface = env->GetFieldID(clazz, "mSurface", "Landroid/view/Surface;");
427 if (fields.surface == NULL) {
431 jclass surface = env->FindClass("android/view/Surface");
432 if (surface == NULL) {
436 fields.post_event = env->GetStaticMethodID(clazz, "postEventFromNative",
437 "(Ljava/lang/Object;IIILjava/lang/Object;)V");
438 if (fields.post_event == NULL) {
445 android_media_MediaRecorder_native_setup(JNIEnv *env, jobject thiz, jobject weak_this,
450 sp<MediaRecorder> mr = new MediaRecorder();
452 jniThrowException(env, "java/lang/RuntimeException", "Out of memory");
455 if (mr->initCheck() != NO_ERROR) {
456 jniThrowException(env, "java/lang/RuntimeException", "Unable to initialize media recorder");
460 // create new listener and give it to MediaRecorder
461 sp<JNIMediaRecorderListener> listener = new JNIMediaRecorderListener(env, thiz, weak_this);
462 mr->setListener(listener);
464 // Convert client name jstring to String16
465 const char16_t *rawClientName = env->GetStringChars(packageName, NULL);
466 jsize rawClientNameLen = env->GetStringLength(packageName);
467 String16 clientName(rawClientName, rawClientNameLen);
468 env->ReleaseStringChars(packageName, rawClientName);
470 // pass client package name for permissions tracking
471 mr->setClientName(clientName);
473 setMediaRecorder(env, thiz, mr);
477 android_media_MediaRecorder_native_finalize(JNIEnv *env, jobject thiz)
480 android_media_MediaRecorder_release(env, thiz);
483 // ----------------------------------------------------------------------------
485 static JNINativeMethod gMethods[] = {
486 {"setCamera", "(Landroid/hardware/Camera;)V", (void *)android_media_MediaRecorder_setCamera},
487 {"setVideoSource", "(I)V", (void *)android_media_MediaRecorder_setVideoSource},
488 {"setAudioSource", "(I)V", (void *)android_media_MediaRecorder_setAudioSource},
489 {"setOutputFormat", "(I)V", (void *)android_media_MediaRecorder_setOutputFormat},
490 {"setVideoEncoder", "(I)V", (void *)android_media_MediaRecorder_setVideoEncoder},
491 {"setAudioEncoder", "(I)V", (void *)android_media_MediaRecorder_setAudioEncoder},
492 {"setParameter", "(Ljava/lang/String;)V", (void *)android_media_MediaRecorder_setParameter},
493 {"_setOutputFile", "(Ljava/io/FileDescriptor;JJ)V", (void *)android_media_MediaRecorder_setOutputFileFD},
494 {"setVideoSize", "(II)V", (void *)android_media_MediaRecorder_setVideoSize},
495 {"setVideoFrameRate", "(I)V", (void *)android_media_MediaRecorder_setVideoFrameRate},
496 {"setMaxDuration", "(I)V", (void *)android_media_MediaRecorder_setMaxDuration},
497 {"setMaxFileSize", "(J)V", (void *)android_media_MediaRecorder_setMaxFileSize},
498 {"_prepare", "()V", (void *)android_media_MediaRecorder_prepare},
499 {"getSurface", "()Landroid/view/Surface;", (void *)android_media_MediaRecorder_getSurface},
500 {"getMaxAmplitude", "()I", (void *)android_media_MediaRecorder_native_getMaxAmplitude},
501 {"start", "()V", (void *)android_media_MediaRecorder_start},
502 {"stop", "()V", (void *)android_media_MediaRecorder_stop},
503 {"native_reset", "()V", (void *)android_media_MediaRecorder_native_reset},
504 {"release", "()V", (void *)android_media_MediaRecorder_release},
505 {"native_init", "()V", (void *)android_media_MediaRecorder_native_init},
506 {"native_setup", "(Ljava/lang/Object;Ljava/lang/String;)V", (void *)android_media_MediaRecorder_native_setup},
507 {"native_finalize", "()V", (void *)android_media_MediaRecorder_native_finalize},
510 static const char* const kClassPathName = "android/media/MediaRecorder";
512 // This function only registers the native methods, and is called from
513 // JNI_OnLoad in android_media_MediaPlayer.cpp
514 int register_android_media_MediaRecorder(JNIEnv *env)
516 return AndroidRuntime::registerNativeMethods(env,
517 "android/media/MediaRecorder", gMethods, NELEM(gMethods));