commit 2944eca607304a095ea43ba2b8f0b9de61249f9f
author Andreas Huber <andih@google.com> Thu Sep 08 14:12:44 2011 -0700
committer Andreas Huber <andih@google.com> Fri Sep 30 15:26:31 2011 -0700
tree f3dbe4e61cc94ec086b098c7387034f226a2ac14
parent d3523f89a867afa111bb332887bf006ec3ae93e6

Support for an MPEG2 Program Stream extractor.

Change-Id: I606d87c278f72b22a5b6d7ee57bce6b02e280d41

media/libstagefright/MP3Extractor.cpp

diff --git a/media/libstagefright/MP3Extractor.cpp b/media/libstagefright/MP3Extractor.cpp
index 92e84c2..34e9cd7 100644
--- a/media/libstagefright/MP3Extractor.cpp
+++ b/media/libstagefright/MP3Extractor.cpp
@@ -25,11 +25,11 @@
 #include "include/VBRISeeker.h"
 #include "include/XINGSeeker.h"
 
+#include <media/stagefright/foundation/ADebug.h>
 #include <media/stagefright/foundation/AMessage.h>
 #include <media/stagefright/DataSource.h>
 #include <media/stagefright/MediaBuffer.h>
 #include <media/stagefright/MediaBufferGroup.h>
-#include <media/stagefright/MediaDebug.h>
 #include <media/stagefright/MediaDefs.h>
 #include <media/stagefright/MediaErrors.h>
 #include <media/stagefright/MediaSource.h>
@@ -289,9 +289,24 @@
     GetMPEGAudioFrameSize(
             header, &frame_size, &sample_rate, &num_channels, &bitrate);
 
+    unsigned layer = 4 - ((header >> 17) & 3);
+
     mMeta = new MetaData;
 
-    mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG);
+    switch (layer) {
+        case 1:
+            mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG_LAYER_I);
+            break;
+        case 2:
+            mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG_LAYER_II);
+            break;
+        case 3:
+            mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_MPEG);
+            break;
+        default:
+            TRESPASS();
+    }
+
     mMeta->setInt32(kKeySampleRate, sample_rate);
     mMeta->setInt32(kKeyBitRate, bitrate * 1000);
     mMeta->setInt32(kKeyChannelCount, num_channels);