Merge "Revert "Revert "soundpool: reuse channel for same sample if available"""
diff --git a/media/jni/soundpool/SoundPool.cpp b/media/jni/soundpool/SoundPool.cpp
index 1205f9d..80b438b 100644
--- a/media/jni/soundpool/SoundPool.cpp
+++ b/media/jni/soundpool/SoundPool.cpp
@@ -256,7 +256,7 @@
dump();
// allocate a channel
- channel = allocateChannel_l(priority);
+ channel = allocateChannel_l(priority, sampleID);
// no channel allocated - return 0
if (!channel) {
@@ -271,13 +271,25 @@
return channelID;
}
-SoundChannel* SoundPool::allocateChannel_l(int priority)
+SoundChannel* SoundPool::allocateChannel_l(int priority, int sampleID)
{
List<SoundChannel*>::iterator iter;
SoundChannel* channel = NULL;
- // allocate a channel
+ // check if channel for given sampleID still available
if (!mChannels.empty()) {
+ for (iter = mChannels.begin(); iter != mChannels.end(); ++iter) {
+ if (sampleID == (*iter)->getPrevSampleID() && (*iter)->state() == SoundChannel::IDLE) {
+ channel = *iter;
+ mChannels.erase(iter);
+ ALOGV("Allocated recycled channel for same sampleID");
+ break;
+ }
+ }
+ }
+
+ // allocate any channel
+ if (!channel && !mChannels.empty()) {
iter = mChannels.begin();
if (priority >= (*iter)->priority()) {
channel = *iter;
@@ -648,6 +660,7 @@
void SoundChannel::init(SoundPool* soundPool)
{
mSoundPool = soundPool;
+ mPrevSampleID = -1;
}
// call with sound pool lock held
@@ -656,7 +669,7 @@
{
sp<AudioTrack> oldTrack;
sp<AudioTrack> newTrack;
- status_t status;
+ status_t status = NO_ERROR;
{ // scope for the lock
Mutex::Autolock lock(&mLock);
@@ -703,38 +716,41 @@
}
#endif
- // mToggle toggles each time a track is started on a given channel.
- // The toggle is concatenated with the SoundChannel address and passed to AudioTrack
- // as callback user data. This enables the detection of callbacks received from the old
- // audio track while the new one is being started and avoids processing them with
- // wrong audio audio buffer size (mAudioBufferSize)
- unsigned long toggle = mToggle ^ 1;
- void *userData = (void *)((unsigned long)this | toggle);
- audio_channel_mask_t channelMask = audio_channel_out_mask_from_count(numChannels);
+ if (!mAudioTrack.get() || mPrevSampleID != sample->sampleID()) {
+ // mToggle toggles each time a track is started on a given channel.
+ // The toggle is concatenated with the SoundChannel address and passed to AudioTrack
+ // as callback user data. This enables the detection of callbacks received from the old
+ // audio track while the new one is being started and avoids processing them with
+ // wrong audio audio buffer size (mAudioBufferSize)
+ unsigned long toggle = mToggle ^ 1;
+ void *userData = (void *)((unsigned long)this | toggle);
+ audio_channel_mask_t channelMask = audio_channel_out_mask_from_count(numChannels);
- // do not create a new audio track if current track is compatible with sample parameters
-#ifdef USE_SHARED_MEM_BUFFER
- newTrack = new AudioTrack(streamType, sampleRate, sample->format(),
- channelMask, sample->getIMemory(), AUDIO_OUTPUT_FLAG_FAST, callback, userData);
-#else
- uint32_t bufferFrames = (totalFrames + (kDefaultBufferCount - 1)) / kDefaultBufferCount;
- newTrack = new AudioTrack(streamType, sampleRate, sample->format(),
- channelMask, frameCount, AUDIO_OUTPUT_FLAG_FAST, callback, userData,
- bufferFrames);
-#endif
- oldTrack = mAudioTrack;
- status = newTrack->initCheck();
- if (status != NO_ERROR) {
- ALOGE("Error creating AudioTrack");
- goto exit;
+ // do not create a new audio track if current track is compatible with sample parameters
+ #ifdef USE_SHARED_MEM_BUFFER
+ newTrack = new AudioTrack(streamType, sampleRate, sample->format(),
+ channelMask, sample->getIMemory(), AUDIO_OUTPUT_FLAG_FAST, callback, userData);
+ #else
+ uint32_t bufferFrames = (totalFrames + (kDefaultBufferCount - 1)) / kDefaultBufferCount;
+ newTrack = new AudioTrack(streamType, sampleRate, sample->format(),
+ channelMask, frameCount, AUDIO_OUTPUT_FLAG_FAST, callback, userData,
+ bufferFrames);
+ #endif
+ oldTrack = mAudioTrack;
+ status = newTrack->initCheck();
+ if (status != NO_ERROR) {
+ ALOGE("Error creating AudioTrack");
+ goto exit;
+ }
+ // From now on, AudioTrack callbacks received with previous toggle value will be ignored.
+ mToggle = toggle;
+ mAudioTrack = newTrack;
+ } else {
+ newTrack = mAudioTrack;
+ ALOGV("reusing track %p for sample %d", mAudioTrack.get(), sample->sampleID());
}
- ALOGV("setVolume %p", newTrack.get());
newTrack->setVolume(leftVolume, rightVolume);
newTrack->setLoop(0, frameCount, loop);
-
- // From now on, AudioTrack callbacks received with previous toggle value will be ignored.
- mToggle = toggle;
- mAudioTrack = newTrack;
mPos = 0;
mSample = sample;
mChannelID = nextChannelID;
@@ -877,6 +893,7 @@
setVolume_l(0, 0);
ALOGV("stop");
mAudioTrack->stop();
+ mPrevSampleID = mSample->sampleID();
mSample.clear();
mState = IDLE;
mPriority = IDLE_PRIORITY;
diff --git a/media/jni/soundpool/SoundPool.h b/media/jni/soundpool/SoundPool.h
index d19cd91..4aacf53 100644
--- a/media/jni/soundpool/SoundPool.h
+++ b/media/jni/soundpool/SoundPool.h
@@ -136,6 +136,7 @@
void nextEvent();
int nextChannelID() { return mNextEvent.channelID(); }
void dump();
+ int getPrevSampleID(void) { return mPrevSampleID; }
private:
static void callback(int event, void* user, void *info);
@@ -152,6 +153,7 @@
int mAudioBufferSize;
unsigned long mToggle;
bool mAutoPaused;
+ int mPrevSampleID;
};
// application object for managing a pool of sounds
@@ -193,7 +195,7 @@
sp<Sample> findSample(int sampleID) { return mSamples.valueFor(sampleID); }
SoundChannel* findChannel (int channelID);
SoundChannel* findNextChannel (int channelID);
- SoundChannel* allocateChannel_l(int priority);
+ SoundChannel* allocateChannel_l(int priority, int sampleID);
void moveToFront_l(SoundChannel* channel);
void notify(SoundPoolEvent event);
void dump();