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// Copyright (c) 2012 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_VIDEO_CAPTURE_HOST_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "content/common/media/video_capture.h"
#include "content/public/renderer/renderer_ppapi_host.h"
#include "content/renderer/pepper/pepper_device_enumeration_host_helper.h"
#include "content/renderer/pepper/ppb_buffer_impl.h"
#include "media/base/video_capture_types.h"
#include "ppapi/c/dev/ppp_video_capture_dev.h"
#include "ppapi/host/host_message_context.h"
#include "ppapi/host/resource_host.h"
namespace media {
class VideoFrame;
} // namespace media
namespace content {
class PepperPlatformVideoCapture;
class RendererPpapiHostImpl;
class PepperVideoCaptureHost : public ppapi::host::ResourceHost {
public:
PepperVideoCaptureHost(RendererPpapiHostImpl* host,
PP_Instance instance,
PP_Resource resource);
~PepperVideoCaptureHost() override;
bool Init();
int32_t OnResourceMessageReceived(
const IPC::Message& msg,
ppapi::host::HostMessageContext* context) override;
// These methods are called by PepperPlatformVideoCapture only.
// Called when video capture is initialized. We can start
// video capture if |succeeded| is true.
void OnInitialized(bool succeeded);
// Called when video capture has started successfully.
void OnStarted();
// Called when video capture has stopped. There will be no more
// frames delivered.
void OnStopped();
// Called when video capture has paused.
void OnPaused();
// Called when video capture cannot be started because of an error.
void OnError();
// Called when a video frame is ready.
void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame);
private:
int32_t OnOpen(ppapi::host::HostMessageContext* context,
const std::string& device_id,
const PP_VideoCaptureDeviceInfo_Dev& requested_info,
uint32_t buffer_count);
int32_t OnStartCapture(ppapi::host::HostMessageContext* context);
int32_t OnReuseBuffer(ppapi::host::HostMessageContext* context,
uint32_t buffer);
int32_t OnStopCapture(ppapi::host::HostMessageContext* context);
int32_t OnClose(ppapi::host::HostMessageContext* context);
int32_t StopCapture();
int32_t Close();
void PostErrorReply();
void AllocBuffers(const gfx::Size& resolution, int frame_rate);
void ReleaseBuffers();
void SendStatus();
void SetRequestedInfo(const PP_VideoCaptureDeviceInfo_Dev& device_info,
uint32_t buffer_count);
void DetachPlatformVideoCapture();
bool SetStatus(PP_VideoCaptureStatus_Dev status, bool forced);
scoped_ptr<PepperPlatformVideoCapture> platform_video_capture_;
// Buffers of video frame.
struct BufferInfo {
BufferInfo();
~BufferInfo();
bool in_use;
void* data;
scoped_refptr<PPB_Buffer_Impl> buffer;
};
RendererPpapiHostImpl* renderer_ppapi_host_;
gfx::Size alloc_size_;
std::vector<BufferInfo> buffers_;
size_t buffer_count_hint_;
media::VideoCaptureParams video_capture_params_;
PP_VideoCaptureStatus_Dev status_;
ppapi::host::ReplyMessageContext open_reply_context_;
PepperDeviceEnumerationHostHelper enumeration_helper_;
DISALLOW_COPY_AND_ASSIGN(PepperVideoCaptureHost);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_VIDEO_CAPTURE_HOST_H_
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