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// 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.
#ifndef CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
#include "base/compiler_specific.h"
#include "base/memory/weak_ptr.h"
#include "content/public/renderer/media_stream_video_sink.h"
#include "content/renderer/media/media_stream_video_source.h"
#include "content/renderer/pepper/pepper_media_stream_track_host_base.h"
#include "media/base/video_frame.h"
#include "ppapi/c/ppb_video_frame.h"
#include "ppapi/shared_impl/media_stream_video_track_shared.h"
#include "third_party/WebKit/public/platform/WebMediaStreamTrack.h"
#include "ui/gfx/geometry/size.h"
namespace content {
class PepperMediaStreamVideoTrackHost : public PepperMediaStreamTrackHostBase,
public MediaStreamVideoSink,
public MediaStreamVideoSource {
public:
// Input mode constructor.
// In input mode, this class passes video frames from |track| to the
// associated pepper plugin.
PepperMediaStreamVideoTrackHost(RendererPpapiHost* host,
PP_Instance instance,
PP_Resource resource,
const blink::WebMediaStreamTrack& track);
// Output mode constructor.
// In output mode, this class passes video frames from the associated
// pepper plugin to a newly created blink::WebMediaStreamTrack.
PepperMediaStreamVideoTrackHost(RendererPpapiHost* host,
PP_Instance instance,
PP_Resource resource);
bool IsMediaStreamVideoTrackHost() override;
blink::WebMediaStreamTrack track() { return track_; }
private:
virtual ~PepperMediaStreamVideoTrackHost();
void InitBuffers();
// PepperMediaStreamTrackHostBase overrides:
void OnClose() override;
int32_t OnHostMsgEnqueueBuffer(ppapi::host::HostMessageContext* context,
int32_t index) override;
// Sends frame with |index| to |track_|.
int32_t SendFrameToTrack(int32_t index);
void OnVideoFrame(const scoped_refptr<media::VideoFrame>& frame,
const base::TimeTicks& estimated_capture_time);
// MediaStreamVideoSource overrides:
void GetCurrentSupportedFormats(
int max_requested_width,
int max_requested_height,
double max_requested_frame_rate,
const VideoCaptureDeviceFormatsCB& callback) override;
void StartSourceImpl(
const media::VideoCaptureFormat& format,
const blink::WebMediaConstraints& constraints,
const VideoCaptureDeliverFrameCB& frame_callback) override;
void StopSourceImpl() override;
// ResourceHost overrides:
void DidConnectPendingHostToResource() override;
// ResourceMessageHandler overrides:
int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) override;
// Message handlers:
int32_t OnHostMsgConfigure(
ppapi::host::HostMessageContext* context,
const ppapi::MediaStreamVideoTrackShared::Attributes& attributes);
void InitBlinkTrack();
void OnTrackStarted(MediaStreamSource* source,
MediaStreamRequestResult result,
const blink::WebString& result_name);
blink::WebMediaStreamTrack track_;
// True if it has been added to |blink::WebMediaStreamTrack| as a sink.
bool connected_;
// Number of buffers.
int32_t number_of_buffers_;
// Size of frames which are received from MediaStreamVideoSink.
gfx::Size source_frame_size_;
// Plugin specified frame size.
gfx::Size plugin_frame_size_;
// Format of frames which are received from MediaStreamVideoSink.
PP_VideoFrame_Format source_frame_format_;
// Plugin specified frame format.
PP_VideoFrame_Format plugin_frame_format_;
// The size of frame pixels in bytes.
uint32_t frame_data_size_;
// TODO(ronghuawu): Remove |type_| and split PepperMediaStreamVideoTrackHost
// into 2 classes for read and write.
TrackType type_;
bool output_started_;
// Internal class used for delivering video frames on the IO-thread to
// the MediaStreamVideoSource implementation.
class FrameDeliverer;
scoped_refptr<FrameDeliverer> frame_deliverer_;
base::WeakPtrFactory<PepperMediaStreamVideoTrackHost> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(PepperMediaStreamVideoTrackHost);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_MEDIA_STREAM_VIDEO_TRACK_HOST_H_
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