1// Copyright (c) 2012 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_ 6#define CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_ 7 8#include <string> 9 10#include "base/basictypes.h" 11#include "base/callback.h" 12#include "base/compiler_specific.h" 13#include "base/memory/scoped_ptr.h" 14#include "base/memory/weak_ptr.h" 15#include "base/threading/thread_checker.h" 16#include "base/time/time.h" 17#include "content/common/media/video_capture.h" 18#include "media/video/capture/video_capture_types.h" 19 20class GURL; 21 22namespace content { 23class PepperMediaDeviceManager; 24class PepperVideoCaptureHost; 25class RenderViewImpl; 26 27// This object must only be used on the thread it's constructed on. 28class PepperPlatformVideoCapture { 29 public: 30 PepperPlatformVideoCapture(const base::WeakPtr<RenderViewImpl>& render_view, 31 const std::string& device_id, 32 const GURL& document_url, 33 PepperVideoCaptureHost* handler); 34 virtual ~PepperPlatformVideoCapture(); 35 36 // Detaches the event handler and stops sending notifications to it. 37 void DetachEventHandler(); 38 39 void StartCapture(const media::VideoCaptureParams& params); 40 void StopCapture(); 41 42 private: 43 void OnDeviceOpened(int request_id, bool succeeded, const std::string& label); 44 void OnStateUpdate(VideoCaptureState state); 45 void OnFrameReady(const scoped_refptr<media::VideoFrame>& frame, 46 const media::VideoCaptureFormat& format, 47 const base::TimeTicks& estimated_capture_time); 48 49 PepperMediaDeviceManager* GetMediaDeviceManager(); 50 51 base::WeakPtr<RenderViewImpl> render_view_; 52 53 std::string device_id_; 54 std::string label_; 55 int session_id_; 56 base::Closure release_device_cb_; 57 base::Closure stop_capture_cb_; 58 59 PepperVideoCaptureHost* handler_; 60 61 // Whether we have a pending request to open a device. We have to make sure 62 // there isn't any pending request before this object goes away. 63 bool pending_open_device_; 64 int pending_open_device_id_; 65 66 base::ThreadChecker thread_checker_; 67 68 base::WeakPtrFactory<PepperPlatformVideoCapture> weak_factory_; 69 70 DISALLOW_COPY_AND_ASSIGN(PepperPlatformVideoCapture); 71}; 72 73} // namespace content 74 75#endif // CONTENT_RENDERER_PEPPER_PEPPER_PLATFORM_VIDEO_CAPTURE_H_ 76