fix player_x11 playback problem.

media/filters/omx_video_decode_engine.cc

Index: media/filters/omx_video_decode_engine.cc
diff --git a/media/filters/omx_video_decode_engine.cc b/media/filters/omx_video_decode_engine.cc
index 5af29e652bdf97954c0cdfa54485d9339f6923ec..7f64a505fcb9b53cd436a539aced837b5f6733f1 100644
--- a/media/filters/omx_video_decode_engine.cc
+++ b/media/filters/omx_video_decode_engine.cc
@@ -224,6 +224,10 @@ void OmxVideoDecodeEngine::OnReadComplete(OMX_BUFFERHEADERTYPE* buffer) {
          buffer->pBuffer + pixels + pixels /4,
          pixels / 4);
 
+  frame->SetTimestamp(base::TimeDelta::FromMilliseconds(buffer->nTimeStamp));
+  frame->SetDuration(frame->GetTimestamp() - last_pts_);
+  last_pts_ = frame->GetTimestamp();
+

[wjia(left Chromium), 2010/06/02 21:44:38]

The boundary condition is not clear. The duration for first frame (after
seeking) will be a large number. If "duration" is in use, that will result in
screen freezing. You could set last_pts_ initially to uint(-1), or 0. Then treat
first frame specially.

   fill_this_buffer_callback_->Run(frame);
 }
 
@@ -633,6 +637,7 @@ void OmxVideoDecodeEngine::OnPortEnableEventRun(int port) {
   DCHECK_EQ(port, output_port_);
 
   output_port_state_ = kPortEnabled;
+  last_pts_ = base::TimeDelta::FromMilliseconds(0);
   OnPortEnableEventFunc = NULL;
   InitialFillBuffer();
   if (kClientError == client_state_) {