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// 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/webrtc/webrtc_video_sink_adapter.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/logging.h"
#include "base/message_loop/message_loop_proxy.h"
#include "content/renderer/media/native_handle_impl.h"
#include "media/base/video_frame.h"
#include "media/base/video_util.h"
#include "third_party/libjingle/source/talk/media/base/videoframe.h"
#include "third_party/WebKit/public/platform/WebMediaStreamSource.h"
#include "ui/gfx/size.h"
using media::CopyYPlane;
using media::CopyUPlane;
using media::CopyVPlane;
namespace content {
WebRtcVideoSinkAdapter::WebRtcVideoSinkAdapter(
webrtc::VideoTrackInterface* video_track,
MediaStreamVideoSink* sink)
: message_loop_proxy_(base::MessageLoopProxy::current()),
sink_(sink),
video_track_(video_track),
state_(video_track->state()),
track_enabled_(video_track->enabled()) {
DCHECK(sink);
video_track_->AddRenderer(this);
video_track_->RegisterObserver(this);
DVLOG(1) << "WebRtcVideoSinkAdapter";
}
WebRtcVideoSinkAdapter::~WebRtcVideoSinkAdapter() {
video_track_->RemoveRenderer(this);
video_track_->UnregisterObserver(this);
DVLOG(1) << "~WebRtcVideoSinkAdapter";
}
void WebRtcVideoSinkAdapter::SetSize(int width, int height) {
NOTIMPLEMENTED();
}
void WebRtcVideoSinkAdapter::RenderFrame(const cricket::VideoFrame* frame) {
base::TimeDelta timestamp = base::TimeDelta::FromMilliseconds(
frame->GetTimeStamp() / talk_base::kNumNanosecsPerMillisec);
scoped_refptr<media::VideoFrame> video_frame;
if (frame->GetNativeHandle() != NULL) {
NativeHandleImpl* handle =
static_cast<NativeHandleImpl*>(frame->GetNativeHandle());
video_frame = static_cast<media::VideoFrame*>(handle->GetHandle());
video_frame->SetTimestamp(timestamp);
} else {
gfx::Size size(frame->GetWidth(), frame->GetHeight());
video_frame = media::VideoFrame::CreateFrame(
media::VideoFrame::YV12, size, gfx::Rect(size), size, timestamp);
// Aspect ratio unsupported; DCHECK when there are non-square pixels.
DCHECK_EQ(frame->GetPixelWidth(), 1u);
DCHECK_EQ(frame->GetPixelHeight(), 1u);
int y_rows = frame->GetHeight();
int uv_rows = frame->GetHeight() / 2; // YV12 format.
CopyYPlane(
frame->GetYPlane(), frame->GetYPitch(), y_rows, video_frame.get());
CopyUPlane(
frame->GetUPlane(), frame->GetUPitch(), uv_rows, video_frame.get());
CopyVPlane(
frame->GetVPlane(), frame->GetVPitch(), uv_rows, video_frame.get());
}
message_loop_proxy_->PostTask(
FROM_HERE, base::Bind(&WebRtcVideoSinkAdapter::DoRenderFrameOnMainThread,
AsWeakPtr(), video_frame));
}
void WebRtcVideoSinkAdapter::OnChanged() {
DCHECK(message_loop_proxy_->BelongsToCurrentThread());
// TODO(perkj): OnChanged belongs to the base class of WebRtcVideoSinkAdapter
// common for both webrtc audio and video.
webrtc::MediaStreamTrackInterface::TrackState state = video_track_->state();
if (state != state_) {
state_ = state;
switch (state) {
case webrtc::MediaStreamTrackInterface::kInitializing:
// Ignore the kInitializing state since there is no match in
// WebMediaStreamSource::ReadyState.
break;
case webrtc::MediaStreamTrackInterface::kLive:
sink_->OnReadyStateChanged(blink::WebMediaStreamSource::ReadyStateLive);
break;
case webrtc::MediaStreamTrackInterface::kEnded:
sink_->OnReadyStateChanged(
blink::WebMediaStreamSource::ReadyStateEnded);
break;
default:
NOTREACHED();
break;
}
}
if (track_enabled_ != video_track_->enabled()) {
track_enabled_ = video_track_->enabled();
sink_->OnEnabledChanged(track_enabled_);
}
}
void WebRtcVideoSinkAdapter::DoRenderFrameOnMainThread(
scoped_refptr<media::VideoFrame> video_frame) {
DCHECK(message_loop_proxy_->BelongsToCurrentThread());
sink_->OnVideoFrame(video_frame);
}
} // namespace content
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