Fix issue 2929440
Fixed regression introduced by change a54d7d3d7dd691334189aab20d23c65710092869 in audioflinger mixer thread:
When the output stream is suspended, the sleep time between two writes must match the actual duration
of one output stream buffer otherwise the playback rate is not respected.
Change-Id: Ic5bebe890290d1f44aeff9dd3c142d18e26fff2a
diff --git a/services/audioflinger/AudioFlinger.cpp b/services/audioflinger/AudioFlinger.cpp
index 6e7633e..ff31470 100644
--- a/services/audioflinger/AudioFlinger.cpp
+++ b/services/audioflinger/AudioFlinger.cpp
@@ -1601,7 +1601,7 @@
}
if (mSuspended) {
- sleepTime = idleSleepTime;
+ sleepTime = suspendSleepTimeUs();
}
// sleepTime == 0 means we must write to audio hardware
if (sleepTime == 0) {
@@ -2021,6 +2021,11 @@
return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000) / 2;
}
+uint32_t AudioFlinger::MixerThread::suspendSleepTimeUs()
+{
+ return (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000);
+}
+
// ----------------------------------------------------------------------------
AudioFlinger::DirectOutputThread::DirectOutputThread(const sp<AudioFlinger>& audioFlinger, AudioStreamOut* output, int id, uint32_t device)
: PlaybackThread(audioFlinger, output, id, device)
@@ -2365,7 +2370,7 @@
}
if (mSuspended) {
- sleepTime = idleSleepTime;
+ sleepTime = suspendSleepTimeUs();
}
// sleepTime == 0 means we must write to audio hardware
if (sleepTime == 0) {
@@ -2486,6 +2491,18 @@
return time;
}
+uint32_t AudioFlinger::DirectOutputThread::suspendSleepTimeUs()
+{
+ uint32_t time;
+ if (AudioSystem::isLinearPCM(mFormat)) {
+ time = (uint32_t)(((mFrameCount * 1000) / mSampleRate) * 1000);
+ } else {
+ time = 10000;
+ }
+ return time;
+}
+
+
// ----------------------------------------------------------------------------
AudioFlinger::DuplicatingThread::DuplicatingThread(const sp<AudioFlinger>& audioFlinger, AudioFlinger::MixerThread* mainThread, int id)
@@ -2612,7 +2629,7 @@
}
if (mSuspended) {
- sleepTime = idleSleepTime;
+ sleepTime = suspendSleepTimeUs();
}
// sleepTime == 0 means we must write to audio hardware
if (sleepTime == 0) {