commit abdb990953ffe94a9dc544aea0bed17ef7d5f484
author Andy Hung <hunga@google.com> Mon Jan 12 15:08:22 2015 -0800
committer Andy Hung <hunga@google.com> Wed Jan 14 13:11:38 2015 -0800
tree a5cba46c6820b02771d0759bdb1ef6b6d6292356
parent 2d85f097d653b21d1ff2c34f0b732c674d20ccc2

Allow AUDIO_FORMAT_PCM_8_BIT AudioTrack buffers

Previously conversion to AUDIO_FORMAT_PCM_16_BIT was required.
Client shared memory for static tracks and AudioFlinger track creation
and buffer delivery now use native 8 bit PCM data.

Change-Id: I485c07a4971fde9a25442bd43fed95019d39abcc

services/audioflinger/AudioMixer.h

diff --git a/services/audioflinger/AudioMixer.h b/services/audioflinger/AudioMixer.h
index c2ff985..c5df08a 100644
--- a/services/audioflinger/AudioMixer.h
+++ b/services/audioflinger/AudioMixer.h
@@ -127,10 +127,16 @@
     size_t      getUnreleasedFrames(int name) const;
 
     static inline bool isValidPcmTrackFormat(audio_format_t format) {
-        return format == AUDIO_FORMAT_PCM_16_BIT ||
-                format == AUDIO_FORMAT_PCM_24_BIT_PACKED ||
-                format == AUDIO_FORMAT_PCM_32_BIT ||
-                format == AUDIO_FORMAT_PCM_FLOAT;
+        switch (format) {
+        case AUDIO_FORMAT_PCM_8_BIT:
+        case AUDIO_FORMAT_PCM_16_BIT:
+        case AUDIO_FORMAT_PCM_24_BIT_PACKED:
+        case AUDIO_FORMAT_PCM_32_BIT:
+        case AUDIO_FORMAT_PCM_FLOAT:
+            return true;
+        default:
+            return false;
+        }
     }
 
 private: