Upintegrate Audio Flinger changes from ICS_AAH
Bring in changes to audio flinger made to support timed audio tracks
and HW master volume control.
Change-Id: Ide52d48809bdbed13acf35fd59b24637e35064ae
Signed-off-by: John Grossman <johngro@google.com>
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index ac7f6cf..9f2bd3a 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -446,7 +446,7 @@
*/
status_t dump(int fd, const Vector<String16>& args) const;
-private:
+protected:
/* copying audio tracks is not allowed */
AudioTrack(const AudioTrack& other);
AudioTrack& operator = (const AudioTrack& other);
@@ -518,10 +518,33 @@
int mAuxEffectId;
mutable Mutex mLock;
status_t mRestoreStatus;
+ bool mIsTimed;
int mPreviousPriority; // before start()
int mPreviousSchedulingGroup;
};
+class TimedAudioTrack : public AudioTrack
+{
+public:
+ TimedAudioTrack();
+
+ /* allocate a shared memory buffer that can be passed to queueTimedBuffer */
+ status_t allocateTimedBuffer(size_t size, sp<IMemory>* buffer);
+
+ /* queue a buffer obtained via allocateTimedBuffer for playback at the
+ given timestamp. PTS units a microseconds on the media time timeline.
+ The media time transform (set with setMediaTimeTransform) set by the
+ audio producer will handle converting from media time to local time
+ (perhaps going through the common time timeline in the case of
+ synchronized multiroom audio case) */
+ status_t queueTimedBuffer(const sp<IMemory>& buffer, int64_t pts);
+
+ /* define a transform between media time and either common time or
+ local time */
+ enum TargetTimeline {LOCAL_TIME, COMMON_TIME};
+ status_t setMediaTimeTransform(const LinearTransform& xform,
+ TargetTimeline target);
+};
}; // namespace android
diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index 433ce7c..7a2ada0 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -55,6 +55,7 @@
uint32_t flags,
const sp<IMemory>& sharedBuffer,
audio_io_handle_t output,
+ bool isTimed,
int *sessionId,
status_t *status) = 0;
diff --git a/include/media/IAudioTrack.h b/include/media/IAudioTrack.h
index e4772a1..77f3e21 100644
--- a/include/media/IAudioTrack.h
+++ b/include/media/IAudioTrack.h
@@ -24,7 +24,7 @@
#include <utils/Errors.h>
#include <binder/IInterface.h>
#include <binder/IMemory.h>
-
+#include <utils/LinearTransform.h>
namespace android {
@@ -71,6 +71,23 @@
*/
virtual status_t attachAuxEffect(int effectId) = 0;
+
+ /* Allocate a shared memory buffer suitable for holding timed audio
+ samples */
+ virtual status_t allocateTimedBuffer(size_t size,
+ sp<IMemory>* buffer) = 0;
+
+ /* Queue a buffer obtained via allocateTimedBuffer for playback at the given
+ timestamp */
+ virtual status_t queueTimedBuffer(const sp<IMemory>& buffer,
+ int64_t pts) = 0;
+
+ /* Define the linear transform that will be applied to the timestamps
+ given to queueTimedBuffer (which are expressed in media time).
+ Target specifies whether this transform converts media time to local time
+ or Tungsten time. The values for target are defined in AudioTrack.h */
+ virtual status_t setMediaTimeTransform(const LinearTransform& xform,
+ int target) = 0;
};
// ----------------------------------------------------------------------------