JAudioTrack: Add offload mode support
Also, this CL adds below methods to JAudioTrack:
1) getAudioSessionId
2) setOutputDevice
- However, it uses a hidden method of AudioManager.
(See MediaPlayer2Impl.java)
3) getFlags
- Method body is incomplete.
- It needs a way to check whether the audio track is direct,
or whether the HW supports A/V sync.
4) getTimestamp(ExtendedTimestamp *timestamp)
- Method body is empty.
- It needs appropriate Java method to call.
- This is a different method from previously added method
getTimestamp(AudioTimestamp& timestamp).
5) pendingDuration
- Method body is incomplete.
- It depends on above getTimestamp method.
6) add/removeAudioDeviceCallback
- Method body is empty.
- It needs appropriate Java method to call.
- Cannot use Java AudioTrack.addOnRoutingChangedListener(), since the
callback onAudioRoutingChanged(AudioRouting) does not provide the
audio_io_handle_t which the native AudioDeviceCallback needs.
Bug: 70363744
Test: Builds successfully
Change-Id: I50455280812546d97f2c3e6425d17c0483476af1
diff --git a/media/libmediaplayer2/JAudioTrack.cpp b/media/libmediaplayer2/JAudioTrack.cpp
index 6d9605a..ac0cc57 100644
--- a/media/libmediaplayer2/JAudioTrack.cpp
+++ b/media/libmediaplayer2/JAudioTrack.cpp
@@ -32,6 +32,8 @@
uint32_t sampleRate, // AudioFormat && bufferSizeInBytes
audio_format_t format, // AudioFormat && bufferSizeInBytes
audio_channel_mask_t channelMask, // AudioFormat && bufferSizeInBytes
+ callback_t cbf, // Offload
+ void* user, // Offload
size_t frameCount, // bufferSizeInBytes
audio_session_t sessionId, // AudioTrack
const audio_attributes_t* pAttributes, // AudioAttributes
@@ -90,8 +92,27 @@
jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetSessionId, sessionId);
}
+ if (cbf != NULL) {
+ jmethodID jSetOffloadedPlayback = env->GetMethodID(jBuilderCls, "setOffloadedPlayback",
+ "(Z)Landroid/media/AudioTrack$Builder;");
+ jBuilderObj = env->CallObjectMethod(jBuilderObj, jSetOffloadedPlayback, true);
+ mFlags = AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD;
+ }
+
jmethodID jBuild = env->GetMethodID(jBuilderCls, "build", "()Landroid/media/AudioTrack;");
mAudioTrackObj = env->CallObjectMethod(jBuilderObj, jBuild);
+
+ if (cbf != NULL) {
+ // Set offload mode callback
+ jobject jStreamEventCallbackObj = createStreamEventCallback(cbf, user);
+ jobject jExecutorObj = createCallbackExecutor();
+ jmethodID jSetStreamEventCallback = env->GetMethodID(
+ jAudioTrackCls,
+ "setStreamEventCallback",
+ "(Ljava/util/concurrent/Executor;Landroid/media/AudioTrack$StreamEventCallback;)V");
+ env->CallVoidMethod(
+ mAudioTrackObj, jSetStreamEventCallback, jExecutorObj, jStreamEventCallbackObj);
+ }
}
JAudioTrack::~JAudioTrack() {
@@ -160,6 +181,11 @@
return true;
}
+status_t JAudioTrack::getTimestamp(ExtendedTimestamp *timestamp __unused) {
+ // TODO: Implement this after appropriate Java AudioTrack method is available.
+ return NO_ERROR;
+}
+
status_t JAudioTrack::setPlaybackRate(const AudioPlaybackRate &playbackRate) {
// TODO: existing native AudioTrack returns INVALID_OPERATION on offload/direct/fast tracks.
// Should we do the same thing?
@@ -442,6 +468,80 @@
return routedDeviceId;
}
+audio_session_t JAudioTrack::getAudioSessionId() {
+ JNIEnv *env = AndroidRuntime::getJNIEnv();
+ jmethodID jGetAudioSessionId = env->GetMethodID(mAudioTrackCls, "getAudioSessionId", "()I");
+ jint sessionId = env->CallIntMethod(mAudioTrackObj, jGetAudioSessionId);
+ return (audio_session_t) sessionId;
+}
+
+status_t JAudioTrack::setOutputDevice(audio_port_handle_t deviceId) {
+ JNIEnv *env = AndroidRuntime::getJNIEnv();
+ jclass jMP2ImplCls = env->FindClass("android/media/MediaPlayer2Impl");
+ jmethodID jSetAudioOutputDeviceById = env->GetMethodID(
+ jMP2ImplCls, "setAudioOutputDeviceById", "(Landroid/media/AudioTrack;I)Z");
+ jboolean result = env->CallStaticBooleanMethod(
+ jMP2ImplCls, jSetAudioOutputDeviceById, mAudioTrackObj, deviceId);
+ return result == true ? NO_ERROR : BAD_VALUE;
+}
+
+status_t JAudioTrack::pendingDuration(int32_t *msec) {
+ if (msec == nullptr) {
+ return BAD_VALUE;
+ }
+
+ bool isPurePcmData = audio_is_linear_pcm(format()) && (getFlags() & AUDIO_FLAG_HW_AV_SYNC) == 0;
+ if (!isPurePcmData) {
+ return INVALID_OPERATION;
+ }
+
+ // TODO: Need to know the difference btw. client and server time.
+ // If getTimestamp(ExtendedTimestamp) is ready, and un-comment below and modify appropriately.
+ // (copied from AudioTrack.cpp)
+
+// ExtendedTimestamp ets;
+// ExtendedTimestamp::LOCATION location = ExtendedTimestamp::LOCATION_SERVER;
+// if (getTimestamp_l(&ets) == OK && ets.mTimeNs[location] > 0) {
+// int64_t diff = ets.mPosition[ExtendedTimestamp::LOCATION_CLIENT]
+// - ets.mPosition[location];
+// if (diff < 0) {
+// *msec = 0;
+// } else {
+// // ms is the playback time by frames
+// int64_t ms = (int64_t)((double)diff * 1000 /
+// ((double)mSampleRate * mPlaybackRate.mSpeed));
+// // clockdiff is the timestamp age (negative)
+// int64_t clockdiff = (mState != STATE_ACTIVE) ? 0 :
+// ets.mTimeNs[location]
+// + ets.mTimebaseOffset[ExtendedTimestamp::TIMEBASE_MONOTONIC]
+// - systemTime(SYSTEM_TIME_MONOTONIC);
+//
+// //ALOGV("ms: %lld clockdiff: %lld", (long long)ms, (long long)clockdiff);
+// static const int NANOS_PER_MILLIS = 1000000;
+// *msec = (int32_t)(ms + clockdiff / NANOS_PER_MILLIS);
+// }
+// return NO_ERROR;
+// }
+
+ return NO_ERROR;
+}
+
+status_t JAudioTrack::addAudioDeviceCallback(
+ const sp<AudioSystem::AudioDeviceCallback>& callback __unused) {
+ // TODO: Implement this after appropriate Java AudioTrack method is available.
+ return NO_ERROR;
+}
+
+status_t JAudioTrack::removeAudioDeviceCallback(
+ const sp<AudioSystem::AudioDeviceCallback>& callback __unused) {
+ // TODO: Implement this after appropriate Java AudioTrack method is available.
+ return NO_ERROR;
+}
+
+/////////////////////////////////////////////////////////////
+/// Private method begins ///
+/////////////////////////////////////////////////////////////
+
jobject JAudioTrack::createVolumeShaperConfigurationObj(
const sp<media::VolumeShaper::Configuration>& config) {
@@ -546,6 +646,24 @@
return env->CallObjectMethod(jBuilderObj, jBuild);
}
+jobject JAudioTrack::createStreamEventCallback(callback_t cbf, void* user) {
+ JNIEnv *env = AndroidRuntime::getJNIEnv();
+ jclass jCallbackCls = env->FindClass("android/media/MediaPlayer2Impl$StreamEventCallback");
+ jmethodID jCallbackCtor = env->GetMethodID(jCallbackCls, "<init>", "(JJJ)V");
+ jobject jCallbackObj = env->NewObject(jCallbackCls, jCallbackCtor, this, cbf, user);
+ return jCallbackObj;
+}
+
+jobject JAudioTrack::createCallbackExecutor() {
+ JNIEnv *env = AndroidRuntime::getJNIEnv();
+ jclass jExecutorsCls = env->FindClass("java/util/concurrent/Executors");
+ jmethodID jNewSingleThreadExecutor = env->GetStaticMethodID(jExecutorsCls,
+ "newSingleThreadExecutor", "()Ljava/util/concurrent/ExecutorService;");
+ jobject jSingleThreadExecutorObj =
+ env->CallStaticObjectMethod(jExecutorsCls, jNewSingleThreadExecutor);
+ return jSingleThreadExecutorObj;
+}
+
status_t JAudioTrack::javaToNativeStatus(int javaStatus) {
switch (javaStatus) {
case AUDIO_JAVA_SUCCESS: