Support for YUV 4:4:4 subsampling.

media/filters/ffmpeg_video_decoder.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/ffmpeg_video_decoder.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
@@ skipping 51 matching lines @@
                                        AVFrame* frame) {
   // Don't use |codec_context_| here! With threaded decoding,
   // it will contain unsynchronized width/height/pix_fmt values,
   // whereas |codec_context| contains the current threads's
   // updated width/height/pix_fmt, which can change for adaptive
   // content.
   VideoFrame::Format format = PixelFormatToVideoFormat(codec_context->pix_fmt);
   if (format == VideoFrame::UNKNOWN)
     return AVERROR(EINVAL);
   DCHECK(format == VideoFrame::YV12 || format == VideoFrame::YV16 ||
-         format == VideoFrame::YV12J);
+         format == VideoFrame::YV12J || format == VideoFrame::I444);
 
   gfx::Size size(codec_context->width, codec_context->height);
   const int ret = av_image_check_size(size.width(), size.height(), 0, NULL);
   if (ret < 0)
     return ret;
 
   gfx::Size natural_size;
   if (codec_context->sample_aspect_ratio.num > 0) {
     natural_size = GetNaturalSize(size,
                                   codec_context->sample_aspect_ratio.num,
@@ skipping 282 matching lines @@
   if (!codec || avcodec_open2(codec_context_.get(), codec, NULL) < 0) {
     ReleaseFFmpegResources();
     return false;
   }
 
   av_frame_.reset(av_frame_alloc());
   return true;
 }
 
 }  // namespace media