Roll FFmpeg for M37.

media/base/media_file_checker.cc

 // Copyright 2013 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/base/media_file_checker.h"
 
 #include <map>
 
 #include "base/bind.h"
 #include "base/time/time.h"
@@ skipping 66 matching lines @@
       continue;
     }
     AVCodecContext* av_context = it->second;
 
     int frame_decoded = 0;
     if (av_context->codec_type == AVMEDIA_TYPE_AUDIO) {
       // A shallow copy of packet so we can slide packet.data as frames are
       // decoded; otherwise av_free_packet() will corrupt memory.
       AVPacket temp_packet = packet;
       do {
-        avcodec_get_frame_defaults(frame.get());
         result = avcodec_decode_audio4(av_context, frame.get(), &frame_decoded,
                                        &temp_packet);
         if (result < 0)
           break;
+        av_frame_unref(frame.get());
         temp_packet.size -= result;
         temp_packet.data += result;
+        frame_decoded = 0;
       } while (temp_packet.size > 0);
     } else if (av_context->codec_type == AVMEDIA_TYPE_VIDEO) {
-      avcodec_get_frame_defaults(frame.get());
       result = avcodec_decode_video2(av_context, frame.get(), &frame_decoded,
                                      &packet);
+      if (result >= 0 && frame_decoded)
+        av_frame_unref(frame.get());
     }
     av_free_packet(&packet);
   } while (base::TimeTicks::Now() < deadline && read_ok && result >= 0);
 
   return read_ok && (result == AVERROR_EOF || result >= 0);
 }
 
 }  // namespace media