Send video frames backed by textures to WebRTC.

content/renderer/media/rtc_video_decoder.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 "content/renderer/media/rtc_video_decoder.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/safe_numerics.h"
 #include "base/stl_util.h"
 #include "base/task_runner_util.h"
 #include "content/child/child_thread.h"
+#include "content/renderer/media/native_handle_impl.h"
 #include "media/base/bind_to_loop.h"
+#include "third_party/webrtc/common_video/interface/texture_video_frame.h"
 #include "third_party/webrtc/system_wrappers/interface/ref_count.h"
 
 namespace content {
 
 const int32 RTCVideoDecoder::ID_LAST = 0x3FFFFFFF;
 const int32 RTCVideoDecoder::ID_HALF = 0x20000000;
 const int32 RTCVideoDecoder::ID_INVALID = -1;
 
 // Maximum number of concurrent VDA::Decode() operations RVD will maintain.
 // Higher values allow better pipelining in the GPU, but also require more
@@ skipping 317 matching lines @@
   size_t size = 0;
   GetBufferData(
       picture.bitstream_buffer_id(), &timestamp, &width, &height, &size);
   scoped_refptr<media::VideoFrame> frame =
       CreateVideoFrame(picture, pb, timestamp, width, height, size);
   bool inserted =
       picture_buffers_at_display_.insert(picture.picture_buffer_id()).second;
   DCHECK(inserted);
 
   // Create a WebRTC video frame.
-  // TODO(wuchengli): make media::VideoFrame an opaque native handle and put it
-  // into WebRTC frame.
-  webrtc::I420VideoFrame decoded_image;
-  decoded_image.CreateEmptyFrame(
-      width, height, width, (width + 1) / 2, (width + 1) / 2);
-  decoded_image.set_timestamp(timestamp);
+  webrtc::RefCountImpl<NativeHandleImpl>* handle =
+      new webrtc::RefCountImpl<NativeHandleImpl>(frame);
+  webrtc::TextureVideoFrame decoded_image(handle, width, height, timestamp, 0);
 
   // Invoke decode callback. WebRTC expects no frame callback after Release.
   {
     base::AutoLock auto_lock(lock_);
     DCHECK(decode_complete_callback_ != NULL);
     if (IsBufferAfterReset(picture.bitstream_buffer_id(),
                            reset_bitstream_buffer_id_)) {
       decode_complete_callback_->Decoded(decoded_image);
     }
   }
@@ skipping 358 matching lines @@
       continue;
     *timestamp = it->timestamp;
     *width = it->width;
     *height = it->height;
     return;
   }
   NOTREACHED() << "Missing bitstream buffer id: " << bitstream_buffer_id;
 }
 
 }  // namespace content