1 files changed, 21 insertions, 0 deletions
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index dedc40c..7af9635 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -185,4 +185,25 @@ bool GetStreamByteCountOverRange(AVStream* stream,
   return true;
 }
 
+int GetSurfaceHeight(AVStream* stream) {
+  return stream->codec->coded_height;
+}
+
+int GetSurfaceWidth(AVStream* stream) {
+  double aspect_ratio;
+
+  if (stream->sample_aspect_ratio.num)
+    aspect_ratio = av_q2d(stream->sample_aspect_ratio);
+  else if (stream->codec->sample_aspect_ratio.num)
+    aspect_ratio = av_q2d(stream->codec->sample_aspect_ratio);
+  else
+    aspect_ratio = 1.0;
+
+  int width = floor(stream->codec->coded_width * aspect_ratio + 0.5);
+
+  // An even width makes things easier for YV12 and appears to be the behavior
+  // expected by WebKit layout tests.
+  return width & ~1;
+}
+
 }  // namespace media