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// Copyright (c) 2010 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.
// This video renderer implementation uses IPC to signal the browser process to
// composite the video as a separate layer underneath the backing store.
//
// Extremely experimental. Use at own risk!
#ifndef CHROME_RENDERER_MEDIA_IPC_VIDEO_RENDERER_H_
#define CHROME_RENDERER_MEDIA_IPC_VIDEO_RENDERER_H_
#include "app/surface/transport_dib.h"
#include "base/waitable_event.h"
#include "gfx/rect.h"
#include "gfx/size.h"
#include "ipc/ipc_message.h"
#include "media/filters/video_renderer_base.h"
#include "webkit/glue/media/web_video_renderer.h"
#include "webkit/glue/webmediaplayer_impl.h"
class IPCVideoRenderer : public webkit_glue::WebVideoRenderer {
public:
// WebVideoRenderer implementation.
virtual void SetRect(const gfx::Rect& rect);
virtual void Paint(skia::PlatformCanvas* canvas, const gfx::Rect& dest_rect);
void OnUpdateVideo();
void OnUpdateVideoAck();
void OnDestroyVideo();
// Static method for creating factory for this object.
static media::FilterFactory* CreateFactory(
webkit_glue::WebMediaPlayerImpl::Proxy* proxy,
int routing_id);
// FilterFactoryImpl2 implementation.
static bool IsMediaFormatSupported(const media::MediaFormat& media_format);
// TODO(scherkus): remove this mega-hack, see http://crbug.com/28207
class FactoryFactory : public webkit_glue::WebVideoRendererFactoryFactory {
public:
explicit FactoryFactory(int routing_id)
: webkit_glue::WebVideoRendererFactoryFactory(),
routing_id_(routing_id) {
}
virtual media::FilterFactory* CreateFactory(
webkit_glue::WebMediaPlayerImpl::Proxy* proxy) {
return IPCVideoRenderer::CreateFactory(proxy, routing_id_);
}
private:
int routing_id_;
DISALLOW_COPY_AND_ASSIGN(FactoryFactory);
};
protected:
// VideoRendererBase implementation.
virtual bool OnInitialize(media::VideoDecoder* decoder);
virtual void OnStop(media::FilterCallback* callback);
virtual void OnFrameAvailable();
private:
// Only the filter factories can create instances.
friend class media::FilterFactoryImpl2<
IPCVideoRenderer,
webkit_glue::WebMediaPlayerImpl::Proxy*,
int>;
IPCVideoRenderer(webkit_glue::WebMediaPlayerImpl::Proxy* proxy,
int routing_id);
virtual ~IPCVideoRenderer();
// Send an IPC message to the browser process. The routing ID of the message
// is assumed to match |routing_id_|.
void Send(IPC::Message* msg);
// Handles updating the video on the render thread.
void DoUpdateVideo();
// Handles destroying the video on the render thread.
void DoDestroyVideo(media::FilterCallback* callback);
// Pointer to our parent object that is called to request repaints.
scoped_refptr<webkit_glue::WebMediaPlayerImpl::Proxy> proxy_;
// The size of the video.
gfx::Size video_size_;
// The rect of the video.
gfx::Rect video_rect_;
// Whether we've created the video layer on the browser.
bool created_;
// Used to transporting YUV to the browser process.
int routing_id_;
scoped_ptr<TransportDIB> transport_dib_;
// Used to determine whether we've been instructed to stop.
// TODO(scherkus): work around because we don't have asynchronous stopping.
// Refer to http://crbug.com/16059
base::WaitableEvent stopped_;
DISALLOW_COPY_AND_ASSIGN(IPCVideoRenderer);
};
#endif // CHROME_RENDERER_MEDIA_IPC_VIDEO_RENDERER_H_
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