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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.
// OS X implementation of VideoCaptureDevice, using QTKit as native capture API.
#ifndef MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_
#define MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_
#include <string>
#include "base/compiler_specific.h"
#include "media/video/capture/video_capture_device.h"
#include "media/video/capture/video_capture_types.h"
@class VideoCaptureDeviceQTKit;
namespace media {
// Called by VideoCaptureManager to open, close and start, stop video capture
// devices.
class VideoCaptureDeviceMac : public VideoCaptureDevice {
public:
explicit VideoCaptureDeviceMac(const Name& device_name);
virtual ~VideoCaptureDeviceMac();
// VideoCaptureDevice implementation.
virtual void Allocate(int width,
int height,
int frame_rate,
VideoCaptureDevice::EventHandler* observer) OVERRIDE;
virtual void Start() OVERRIDE;
virtual void Stop() OVERRIDE;
virtual void DeAllocate() OVERRIDE;
virtual const Name& device_name() OVERRIDE;
bool Init();
// Called to deliver captured video frames.
void ReceiveFrame(const uint8* video_frame, int video_frame_length,
const VideoCaptureCapability& frame_info);
private:
void SetErrorState(const std::string& reason);
// Flag indicating the internal state.
enum InternalState {
kNotInitialized,
kIdle,
kAllocated,
kCapturing,
kError
};
VideoCaptureDevice::Name device_name_;
VideoCaptureDevice::EventHandler* observer_;
InternalState state_;
VideoCaptureDeviceQTKit* capture_device_;
DISALLOW_COPY_AND_ASSIGN(VideoCaptureDeviceMac);
};
} // namespace media
#endif // MEDIA_VIDEO_CAPTURE_MAC_VIDEO_CAPTURE_DEVICE_MAC_H_
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