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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.
// Implementation of a fake VideoCaptureDevice class. Used for testing other
// video capture classes when no real hardware is available.
#ifndef MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_
#define MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_
#include <string>
#include "base/memory/scoped_ptr.h"
#include "base/threading/thread.h"
#include "media/video/capture/video_capture_device.h"
namespace media {
class MEDIA_EXPORT FakeVideoCaptureDevice : public VideoCaptureDevice {
public:
static VideoCaptureDevice* Create(const Name& device_name);
virtual ~FakeVideoCaptureDevice();
// Used for testing. This will make sure the next call to Create will
// return NULL;
static void SetFailNextCreate();
static void GetDeviceNames(Names* device_names);
// 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;
private:
// Flag indicating the internal state.
enum InternalState {
kIdle,
kAllocated,
kCapturing,
kError
};
explicit FakeVideoCaptureDevice(const Name& device_name);
// Called on the capture_thread_.
void OnCaptureTask();
Name device_name_;
VideoCaptureDevice::EventHandler* observer_;
InternalState state_;
base::Thread capture_thread_;
int frame_size_;
scoped_array<uint8> fake_frame_;
int frame_count_;
int frame_width_;
int frame_height_;
static bool fail_next_create_;
DISALLOW_IMPLICIT_CONSTRUCTORS(FakeVideoCaptureDevice);
};
} // namespace media
#endif // MEDIA_VIDEO_CAPTURE_FAKE_VIDEO_CAPTURE_DEVICE_H_
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