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authorEric Laurent <elaurent@google.com>2012-03-05 17:06:40 -0800
committerEric Laurent <elaurent@google.com>2012-03-16 12:22:07 -0700
commit0df689495a02c4a34943330099404bd8860981c9 (patch)
tree04a6a78a88c5f7e6022b9f98727da961b040dd20 /include
parent2b056c6e6759d63045c22556c5418a08fcb3f80c (diff)
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AudioTrack: relax check on minimum buffer size
Current AudioTrack implementation enforces that the requested audio buffer size is at least corresponding the audio latency. This requirement is too strong and leads to problems with current stagefright and AudioSink implementations when playing over output streams with long latency. Ultimately, the AudioSink design should be changed to specify a minimum buffer size in time or frames units but not in buffer count units. Change-Id: I8ba603956f92ac49143a8249572665aa548f2f0f Conflicts: media/libmedia/AudioTrack.cpp
Diffstat (limited to 'include')
-rw-r--r--include/media/AudioTrack.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index d1a8105..1c401e2 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -130,8 +130,10 @@ public:
* format: Audio format (e.g AUDIO_FORMAT_PCM_16_BIT for signed
* 16 bits per sample).
* channelMask: Channel mask: see audio_channels_t.
- * frameCount: Total size of track PCM buffer in frames. This defines the
- * latency of the track.
+ * frameCount: Minimum size of track PCM buffer in frames. This defines the
+ * latency of the track. The actual size selected by the AudioTrack could be
+ * larger if the requested size is not compatible with current audio HAL
+ * latency.
* flags: Reserved for future use.
* cbf: Callback function. If not null, this function is called periodically
* to request new PCM data.