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 // OS X implementation of VideoCaptureDevice, using QTKit as native capture API. 6 7 #ifndef MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_ 8 #define MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_ 9 10 #include <string> 11 12 #include "base/compiler_specific.h" 13 #include "media/video/capture/video_capture_device.h" 14 #include "media/video/capture/video_capture_types.h" 15 16 @class VideoCaptureDeviceQTKit; 17 18 namespace media { 19 20 // Called by VideoCaptureManager to open, close and start, stop video capture 21 // devices. 22 class VideoCaptureDeviceMac : public VideoCaptureDevice { 23 public: 24 explicit VideoCaptureDeviceMac(const Name& device_name); 25 virtual ~VideoCaptureDeviceMac(); 26 27 // VideoCaptureDevice implementation. 28 virtual void Allocate(const VideoCaptureCapability& capture_format, 29 VideoCaptureDevice::EventHandler* observer) OVERRIDE; 30 virtual void Start() OVERRIDE; 31 virtual void Stop() OVERRIDE; 32 virtual void DeAllocate() OVERRIDE; 33 virtual const Name& device_name() OVERRIDE; 34 35 bool Init(); 36 37 // Called to deliver captured video frames. 38 void ReceiveFrame(const uint8* video_frame, int video_frame_length, 39 const VideoCaptureCapability& frame_info); 40 41 private: 42 void SetErrorState(const std::string& reason); 43 44 // Flag indicating the internal state. 45 enum InternalState { 46 kNotInitialized, 47 kIdle, 48 kAllocated, 49 kCapturing, 50 kError 51 }; 52 53 Name device_name_; 54 VideoCaptureDevice::EventHandler* observer_; 55 InternalState state_; 56 57 VideoCaptureDeviceQTKit* capture_device_; 58 59 DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceMac); 60 }; 61 62 } // namespace media 63 64 #endif // MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_ 65
