Implement ISO BMFF support in Media Source (try 2).

media/filters/chunk_demuxer.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/filters/chunk_demuxer.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "media/base/audio_decoder_config.h"
 #include "media/base/stream_parser_buffer.h"
 #include "media/base/video_decoder_config.h"
 #include "media/filters/chunk_demuxer_client.h"
+#include "media/mp4/mp4_stream_parser.h"
 #include "media/webm/webm_stream_parser.h"
 
 namespace media {
 
 struct CodecInfo {
   const char* name;
   DemuxerStream::Type type;
 };
 
 typedef StreamParser* (*ParserFactoryFunction)();
 
 struct SupportedTypeInfo {
   const char* type;
   const ParserFactoryFunction factory_function;
   const CodecInfo** codecs;
 };
 
 static const CodecInfo kVP8CodecInfo = { "vp8", DemuxerStream::VIDEO };
 static const CodecInfo kVorbisCodecInfo = { "vorbis", DemuxerStream::AUDIO };
 
+// TODO(strobe): Perform matching against supported profiles and levels, or
+// simply accept codecs that match a prefix.
+static const CodecInfo kH264CodecInfo = { "avc1.4D4041", DemuxerStream::VIDEO };
+static const CodecInfo kAACCodecInfo = { "mp4a.40.2", DemuxerStream::AUDIO };
+
 static const CodecInfo* kVideoWebMCodecs[] = {
   &kVP8CodecInfo,
   &kVorbisCodecInfo,
   NULL
 };
 
 static const CodecInfo* kAudioWebMCodecs[] = {
   &kVorbisCodecInfo,
   NULL
 };
 
+static const CodecInfo* kVideoMP4Codecs[] = {
+  &kH264CodecInfo,
+  &kAACCodecInfo,
+  NULL
+};
+
+static const CodecInfo* kAudioMP4Codecs[] = {
+  &kAACCodecInfo,
+  NULL
+};
+
 static StreamParser* BuildWebMParser() {
   return new WebMStreamParser();
 }
 
+static StreamParser* BuildMP4Parser() {
+  return new mp4::MP4StreamParser();
+}
+
 static const SupportedTypeInfo kSupportedTypeInfo[] = {
   { "video/webm", &BuildWebMParser, kVideoWebMCodecs },
   { "audio/webm", &BuildWebMParser, kAudioWebMCodecs },
+  { "video/mp4", &BuildMP4Parser, kVideoMP4Codecs },
+  { "audio/mp4", &BuildMP4Parser, kAudioMP4Codecs },
 };
 
 // Checks to see if the specified |type| and |codecs| list are supported.
 // Returns true if |type| and all codecs listed in |codecs| are supported.
 //         |factory_function| contains a function that can build a StreamParser
 //                            for this type.
 //         |has_audio| is true if an audio codec was specified.
 //         |has_video| is true if a video codec was specified.
 // Returns false otherwise. The values of |factory_function|, |has_audio|,
 //         and |has_video| are undefined.
@@ skipping 944 matching lines @@
   // TODO(vrk): There should be a special case for the first appends where all
   // streams (for both demuxed and muxed case) begin at the earliest stream
   // timestamp. (crbug.com/132815)
   if (audio_ && source_id == source_id_audio_)
     audio_->OnNewMediaSegment(start_timestamp);
   if (video_ && source_id == source_id_video_)
     video_->OnNewMediaSegment(start_timestamp);
 }
 
 }  // namespace media