Multi-client recording
Supports multiple clients both at native sample rate and with resampling.
Change-Id: Icea55b4fd30751761b7debaa3ce016c79e712d8d
diff --git a/services/audioflinger/Threads.h b/services/audioflinger/Threads.h
index 999fea3..8d9f3e1 100644
--- a/services/audioflinger/Threads.h
+++ b/services/audioflinger/Threads.h
@@ -839,11 +839,24 @@
// record thread
-class RecordThread : public ThreadBase, public AudioBufferProvider
- // derives from AudioBufferProvider interface for use by resampler
+class RecordThread : public ThreadBase
{
public:
+ class RecordTrack;
+ class ResamplerBufferProvider : public AudioBufferProvider
+ // derives from AudioBufferProvider interface for use by resampler
+ {
+ public:
+ ResamplerBufferProvider(RecordTrack* recordTrack) : mRecordTrack(recordTrack) { }
+ virtual ~ResamplerBufferProvider() { }
+ // AudioBufferProvider interface
+ virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts);
+ virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
+ private:
+ RecordTrack * const mRecordTrack;
+ };
+
#include "RecordTracks.h"
RecordThread(const sp<AudioFlinger>& audioFlinger,
@@ -898,9 +911,6 @@
AudioStreamIn* clearInput();
virtual audio_stream_t* stream() const;
- // AudioBufferProvider interface
- virtual status_t getNextBuffer(AudioBufferProvider::Buffer* buffer, int64_t pts);
- virtual void releaseBuffer(AudioBufferProvider::Buffer* buffer);
virtual bool checkForNewParameters_l();
virtual String8 getParameters(const String8& keys);
@@ -921,13 +931,13 @@
virtual bool isValidSyncEvent(const sp<SyncEvent>& event) const;
static void syncStartEventCallback(const wp<SyncEvent>& event);
- void handleSyncStartEvent(const sp<SyncEvent>& event);
+ void handleSyncStartEvent(RecordTrack *recordTrack, const sp<SyncEvent>& event);
virtual size_t frameCount() const { return mFrameCount; }
bool hasFastRecorder() const { return false; }
private:
- void clearSyncStartEvent();
+ void clearSyncStartEvent(RecordTrack* recordTrack);
// Enter standby if not already in standby, and set mStandby flag
void standbyIfNotAlreadyInStandby();
@@ -944,35 +954,18 @@
int mActiveTracksGen;
Condition mStartStopCond;
- // updated by RecordThread::readInputParameters()
- AudioResampler *mResampler;
- // interleaved stereo pairs of fixed-point signed Q19.12
- int32_t *mRsmpOutBuffer;
-
// resampler converts input at HAL Hz to output at AudioRecord client Hz
int16_t *mRsmpInBuffer; // see new[] for details on the size
size_t mRsmpInFrames; // size of resampler input in frames
size_t mRsmpInFramesP2;// size rounded up to a power-of-2
- size_t mRsmpInUnrel; // unreleased frames remaining from
- // most recent getNextBuffer
- // these are rolling counters that are never cleared
- int32_t mRsmpInFront; // next available frame
+
+ // rolling index that is never cleared
int32_t mRsmpInRear; // last filled frame + 1
- size_t mRsmpInIndex; // FIXME legacy
// client's requested configuration, which may differ from the HAL configuration
const uint32_t mReqChannelCount;
const uint32_t mReqSampleRate;
- ssize_t mBytesRead;
- // sync event triggering actual audio capture. Frames read before this event will
- // be dropped and therefore not read by the application.
- sp<SyncEvent> mSyncStartEvent;
- // number of captured frames to drop after the start sync event has been received.
- // when < 0, maximum frames to drop before starting capture even if sync event is
- // not received
- ssize_t mFramestoDrop;
-
// For dumpsys
const sp<NBAIO_Sink> mTeeSink;
};