Add texture support in WebrtcVideoCapturerAdapter.

content/renderer/media/webrtc/webrtc_video_capturer_adapter.cc

 // Copyright 2014 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/webrtc/webrtc_video_capturer_adapter.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/memory/aligned_memory.h"
+#include "content/renderer/media/native_handle_impl.h"
 #include "media/base/video_frame.h"
 #include "third_party/libyuv/include/libyuv/convert.h"
+#include "third_party/webrtc/system_wrappers/interface/ref_count.h"
 
 namespace content {
 
 WebRtcVideoCapturerAdapter::WebRtcVideoCapturerAdapter(bool is_screencast)
     : is_screencast_(is_screencast),
       running_(false),
       buffer_(NULL),
       buffer_size_(0) {
 }
 
@@ skipping 49 matching lines @@
   best_format->width = desired.width;
   best_format->height = desired.height;
   best_format->fourcc = cricket::FOURCC_I420;
   best_format->interval = desired.interval;
   return true;
 }
 
 void WebRtcVideoCapturerAdapter::OnFrameCaptured(
     const scoped_refptr<media::VideoFrame>& frame) {
   DCHECK(media::VideoFrame::I420 == frame->format() ||
-         media::VideoFrame::YV12 == frame->format());
+         media::VideoFrame::YV12 == frame->format() ||
+         media::VideoFrame::NATIVE_TEXTURE == frame->format());
   if (first_frame_timestamp_ == media::kNoTimestamp())
     first_frame_timestamp_ = frame->timestamp();
 
   cricket::CapturedFrame captured_frame;
   captured_frame.width = frame->visible_rect().width();
   captured_frame.height = frame->visible_rect().height();
   // cricket::CapturedFrame time is in nanoseconds.
   captured_frame.elapsed_time =
       (frame->timestamp() - first_frame_timestamp_).InMicroseconds() *
       base::Time::kNanosecondsPerMicrosecond;
   captured_frame.time_stamp = frame->timestamp().InMicroseconds() *
                               base::Time::kNanosecondsPerMicrosecond;
   captured_frame.pixel_height = 1;
   captured_frame.pixel_width = 1;
 
   // TODO(perkj):
   // Libjingle expects contiguous layout of image planes as input.
   // The only format where that is true in Chrome is I420 where the
   // coded_size == visible_rect().size().
-  if (frame->format() != media::VideoFrame::I420 ||
+  if (frame->format() == media::VideoFrame::NATIVE_TEXTURE) {
+    webrtc::RefCountImpl<NativeHandleImpl>* handle =
+              new webrtc::RefCountImpl<NativeHandleImpl>(frame.get());

[perkj_chrome, 2014/05/12 08:19:42]

nit:indentation

[wuchengli, 2014/05/12 09:41:29]

Done. Ran git cl format.

+    captured_frame.handle = handle;

[perkj_chrome, 2014/05/12 08:19:42]

How does this ensure |frame| is not released while libjingle is using it? 

[wuchengli, 2014/05/12 09:41:29]

NativeHandleImpl keeps a reference to |frame|.
https://code.google.com/p/chromium/codesearch#chromium/src/content/renderer/m...

+  } else if (frame->format() != media::VideoFrame::I420 ||
       frame->coded_size() != frame->visible_rect().size()) {
     // Cropping and or switching UV planes is needed.
     UpdateI420Buffer(frame);
     captured_frame.data = buffer_;
     captured_frame.data_size = buffer_size_;
     captured_frame.fourcc = cricket::FOURCC_I420;
   } else {
     captured_frame.fourcc = media::VideoFrame::I420 == frame->format() ?
         cricket::FOURCC_I420 : cricket::FOURCC_YV12;
     captured_frame.data = frame->data(0);
@@ skipping 54 matching lines @@
                    dst_stride_y,
                    dst_u,
                    dst_halfwidth,
                    dst_v,
                    dst_halfwidth,
                    dst_width,
                    dst_height);
 }
 
 }  // namespace content