commit ab5cdbaf65ca509681d2726aacdf3ac8bfb6b3fa
author Eric Laurent <elaurent@google.com> Mon Jun 09 17:22:27 2014 -0700
committer Eric Laurent <elaurent@google.com> Thu Jun 19 10:05:57 2014 -0700
tree 0d406acdfea2d44cd430ef16ee2a25b7722e4b1d
parent 29a8b2fe294a34ac7f004203426961a599e725ea

AudioTrack: add support for compressed audio

Add support for compressed audio playback by use
of an AudioTrack attached to a direct output thread.

Bug: 9428304.

Change-Id: I4a61be9cf0e31003ca85935d6e0ee38ca8192e03

include/media/AudioTrack.h

diff --git a/include/media/AudioTrack.h b/include/media/AudioTrack.h
index 5dc77a3..3492520 100644
--- a/include/media/AudioTrack.h
+++ b/include/media/AudioTrack.h
@@ -632,6 +632,8 @@
             nsecs_t processAudioBuffer();
 
             bool     isOffloaded() const;
+            bool     isDirect() const;
+            bool     isOffloadedOrDirect() const;
 
             // caller must hold lock on mLock for all _l methods
 
@@ -648,6 +650,13 @@
             bool     isOffloaded_l() const
                 { return (mFlags & AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD) != 0; }
 
+            bool     isOffloadedOrDirect_l() const
+                { return (mFlags & (AUDIO_OUTPUT_FLAG_COMPRESS_OFFLOAD|
+                                                AUDIO_OUTPUT_FLAG_DIRECT)) != 0; }
+
+            bool     isDirect_l() const
+                { return (mFlags & AUDIO_OUTPUT_FLAG_DIRECT) != 0; }
+
     // Next 4 fields may be changed if IAudioTrack is re-created, but always != 0
     sp<IAudioTrack>         mAudioTrack;
     sp<IMemory>             mCblkMemory;

include/media/IAudioFlinger.h

diff --git a/include/media/IAudioFlinger.h b/include/media/IAudioFlinger.h
index c742810..fc8be20 100644
--- a/include/media/IAudioFlinger.h
+++ b/include/media/IAudioFlinger.h
@@ -50,6 +50,7 @@
         TRACK_TIMED   = 1,  // client requests a TimedAudioTrack
         TRACK_FAST    = 2,  // client requests a fast AudioTrack or AudioRecord
         TRACK_OFFLOAD = 4,  // client requests offload to hw codec
+        TRACK_DIRECT = 8,   // client requests a direct output
     };
     typedef uint32_t track_flags_t;