1// libjingle 2// Copyright 2004 Google Inc. 3// 4// Redistribution and use in source and binary forms, with or without 5// modification, are permitted provided that the following conditions are met: 6// 7// 1. Redistributions of source code must retain the above copyright notice, 8// this list of conditions and the following disclaimer. 9// 2. Redistributions in binary form must reproduce the above copyright notice, 10// this list of conditions and the following disclaimer in the documentation 11// and/or other materials provided with the distribution. 12// 3. The name of the author may not be used to endorse or promote products 13// derived from this software without specific prior written permission. 14// 15// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 16// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 17// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO 18// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 19// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 21// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 22// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 23// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 24// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 26#ifndef TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_ 27#define TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_ 28 29#ifdef HAVE_WEBRTC_VIDEO 30 31#include <string> 32#include <vector> 33 34#include "talk/base/messagehandler.h" 35#include "talk/media/base/videocapturer.h" 36#include "talk/media/webrtc/webrtcvideoframe.h" 37#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h" 38#include "webrtc/modules/video_capture/include/video_capture.h" 39 40namespace cricket { 41 42// Factory to allow injection of a VCM impl into WebRtcVideoCapturer. 43// DeviceInfos do not have a Release() and therefore need an explicit Destroy(). 44class WebRtcVcmFactoryInterface { 45 public: 46 virtual ~WebRtcVcmFactoryInterface() {} 47 virtual webrtc::VideoCaptureModule* Create( 48 int id, const char* device) = 0; 49 virtual webrtc::VideoCaptureModule::DeviceInfo* CreateDeviceInfo(int id) = 0; 50 virtual void DestroyDeviceInfo( 51 webrtc::VideoCaptureModule::DeviceInfo* info) = 0; 52}; 53 54// WebRTC-based implementation of VideoCapturer. 55class WebRtcVideoCapturer : public VideoCapturer, 56 public webrtc::VideoCaptureDataCallback { 57 public: 58 WebRtcVideoCapturer(); 59 explicit WebRtcVideoCapturer(WebRtcVcmFactoryInterface* factory); 60 virtual ~WebRtcVideoCapturer(); 61 62 bool Init(const Device& device); 63 bool Init(webrtc::VideoCaptureModule* module); 64 65 // Override virtual methods of the parent class VideoCapturer. 66 virtual bool GetBestCaptureFormat(const VideoFormat& desired, 67 VideoFormat* best_format); 68 virtual CaptureState Start(const VideoFormat& capture_format); 69 virtual void Stop(); 70 virtual bool IsRunning(); 71 virtual bool IsScreencast() const { return false; } 72 73 protected: 74 // Override virtual methods of the parent class VideoCapturer. 75 virtual bool GetPreferredFourccs(std::vector<uint32>* fourccs); 76 77 private: 78 // Callback when a frame is captured by camera. 79 virtual void OnIncomingCapturedFrame(const int32_t id, 80 webrtc::I420VideoFrame& frame); 81 virtual void OnIncomingCapturedEncodedFrame(const int32_t id, 82 webrtc::VideoFrame& frame, 83 webrtc::VideoCodecType codec_type) { 84 } 85 virtual void OnCaptureDelayChanged(const int32_t id, 86 const int32_t delay); 87 88 talk_base::scoped_ptr<WebRtcVcmFactoryInterface> factory_; 89 webrtc::VideoCaptureModule* module_; 90 int captured_frames_; 91 std::vector<uint8_t> capture_buffer_; 92}; 93 94struct WebRtcCapturedFrame : public CapturedFrame { 95 public: 96 WebRtcCapturedFrame(const webrtc::I420VideoFrame& frame, 97 void* buffer, int length); 98}; 99 100} // namespace cricket 101 102#endif // HAVE_WEBRTC_VIDEO 103#endif // TALK_MEDIA_WEBRTCVIDEOCAPTURER_H_ 104