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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_PLATFORM_VIDEO_CAPTURE_H_
#define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
#include <memory>
#include <string>
#include "base/callback.h"
#include "base/compiler_specific.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/threading/thread_checker.h"
#include "base/time/time.h"
#include "content/common/media/video_capture.h"
#include "media/capture/video_capture_types.h"
namespace media {
class VideoFrame;
} // namespace media
namespace content {
class PepperMediaDeviceManager;
class PepperVideoCaptureHost;
// This object must only be used on the thread it's constructed on.
class PepperPlatformVideoCapture {
public:
PepperPlatformVideoCapture(int render_frame_id,
const std::string& device_id,
PepperVideoCaptureHost* handler);
virtual ~PepperPlatformVideoCapture();
// Detaches the event handler and stops sending notifications to it.
void DetachEventHandler();
void StartCapture(const media::VideoCaptureParams& params);
void StopCapture();
private:
void OnDeviceOpened(int request_id, bool succeeded, const std::string& label);
void OnStateUpdate(VideoCaptureState state);
void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame,
base::TimeTicks estimated_capture_time);
// Can return NULL if the RenderFrame referenced by |render_frame_id_| has
// gone away.
PepperMediaDeviceManager* GetMediaDeviceManager();
const int render_frame_id_;
const std::string device_id_;
std::string label_;
int session_id_;
base::Closure release_device_cb_;
base::Closure stop_capture_cb_;
PepperVideoCaptureHost* handler_;
// Whether we have a pending request to open a device. We have to make sure
// there isn't any pending request before this object goes away.
bool pending_open_device_;
int pending_open_device_id_;
base::ThreadChecker thread_checker_;
base::WeakPtrFactory<PepperPlatformVideoCapture> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(PepperPlatformVideoCapture);
};
} // namespace content
#endif // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_
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