Add HE AAC support to ISO BMFF.

media/mp4/mp4_stream_parser.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "media/mp4/mp4_stream_parser.h"
 
 #include "base/callback.h"
 #include "base/callback_helpers.h"
 #include "base/logging.h"
 #include "base/time.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/stream_parser_buffer.h"
 #include "media/base/video_decoder_config.h"
 #include "media/mp4/box_definitions.h"
 #include "media/mp4/box_reader.h"
+#include "media/mp4/es_descriptor.h"
 #include "media/mp4/rcheck.h"
 
 namespace media {
 namespace mp4 {
 
 MP4StreamParser::MP4StreamParser()
     : state_(kWaitingForInit),
       moof_head_(0),
       mdat_tail_(0),
       has_audio_(false),
@@ skipping 129 matching lines @@
     if (track->media.handler.type == kAudio && !audio_config.IsValidConfig()) {
       RCHECK(!samp_descr.audio_entries.empty());
       const AudioSampleEntry& entry = samp_descr.audio_entries[0];
 
       // TODO(strobe): We accept all format values, pending clarification on
       // the formats used for encrypted media (http://crbug.com/132351).
       //  RCHECK(entry.format == FOURCC_MP4A ||
       //         (entry.format == FOURCC_ENCA &&
       //          entry.sinf.format.format == FOURCC_MP4A));
 
-      const ChannelLayout layout =
-          AVC::ConvertAACChannelCountToChannelLayout(entry.channelcount);
-      audio_config.Initialize(kCodecAAC, entry.samplesize, layout,
-                              entry.samplerate, NULL, 0, false);
+      // Check if it is MPEG4 AAC defined in ISO 14496 Part 3.
+      RCHECK(entry.esds.object_type == kISO_14496_3);
+      aac_ = entry.esds.aac;
+      audio_config.Initialize(kCodecAAC, entry.samplesize,
+                              aac_.channel_layout(), aac_.frequency(),
+                              NULL, 0, false);
+
       has_audio_ = true;
       audio_track_id_ = track->header.track_id;
     }
     if (track->media.handler.type == kVideo && !video_config.IsValidConfig()) {
       RCHECK(!samp_descr.video_entries.empty());
       const VideoSampleEntry& entry = samp_descr.video_entries[0];
 
       //  RCHECK(entry.format == FOURCC_AVC1 ||
       //         (entry.format == FOURCC_ENCV &&
       //          entry.sinf.format.format == FOURCC_AVC1));
@@ skipping 105 matching lines @@
           avc_config = &moov_->tracks[t].media.information.
               sample_table.description.video_entries[0].avcc;
           break;
         }
       }
       RCHECK(avc_config != NULL);
       RCHECK(AVC::InsertParameterSets(*avc_config, &frame_buf));
     }
   }
 
+  if (audio) {
+    aac_.ConvertEsdsToADTS(&frame_buf);
+  }
+
   scoped_refptr<StreamParserBuffer> stream_buf =
     StreamParserBuffer::CopyFrom(&frame_buf[0], frame_buf.size(),
                                  runs_.is_keyframe());
 
   stream_buf->SetDuration(runs_.duration());
   stream_buf->SetTimestamp(runs_.cts());
   stream_buf->SetDecodeTimestamp(runs_.dts());
 
   DVLOG(3) << "Pushing frame: aud=" << audio
            << ", key=" << runs_.is_keyframe()
@@ skipping 52 matching lines @@
   return true;
 }
 
 void MP4StreamParser::ChangeState(State new_state) {
   DVLOG(2) << "Changing state: " << new_state;
   state_ = new_state;
 }
 
 }  // namespace mp4
 }  // namespace media