Add support for avc3 codec string.

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/time.h"
@@ skipping 250 matching lines @@
           base::TimeDelta());
       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());
       if (desc_idx >= samp_descr.video_entries.size())
         desc_idx = 0;
       const VideoSampleEntry& entry = samp_descr.video_entries[desc_idx];
 
-      if (!(entry.format == FOURCC_AVC1 ||
-            (entry.format == FOURCC_ENCV &&
-             entry.sinf.format.format == FOURCC_AVC1))) {
+      if (!entry.IsFormatValid()) {
         MEDIA_LOG(log_cb_) << "Unsupported video format 0x"
                            << std::hex << entry.format << " in stsd box.";
         return false;
       }
 
       // TODO(strobe): Recover correct crop box
       gfx::Size coded_size(entry.width, entry.height);
       gfx::Rect visible_rect(coded_size);
       gfx::Size natural_size = GetNaturalSize(visible_rect.size(),
                                               entry.pixel_aspect.h_spacing,
@@ skipping 285 matching lines @@
   return !err;
 }
 
 void MP4StreamParser::ChangeState(State new_state) {
   DVLOG(2) << "Changing state: " << new_state;
   state_ = new_state;
 }
 
 }  // namespace mp4
 }  // namespace media