1/*
2 *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_VIDEO_CAPTURE_LINUX_H_
12#define WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_VIDEO_CAPTURE_LINUX_H_
13
14#include "webrtc/base/platform_thread.h"
15#include "webrtc/common_types.h"
16#include "webrtc/modules/video_capture/video_capture_impl.h"
17
18namespace webrtc
19{
20class CriticalSectionWrapper;
21namespace videocapturemodule
22{
23class VideoCaptureModuleV4L2: public VideoCaptureImpl
24{
25public:
26    VideoCaptureModuleV4L2(int32_t id);
27    virtual ~VideoCaptureModuleV4L2();
28    virtual int32_t Init(const char* deviceUniqueId);
29    virtual int32_t StartCapture(const VideoCaptureCapability& capability);
30    virtual int32_t StopCapture();
31    virtual bool CaptureStarted();
32    virtual int32_t CaptureSettings(VideoCaptureCapability& settings);
33
34private:
35    enum {kNoOfV4L2Bufffers=4};
36
37    static bool CaptureThread(void*);
38    bool CaptureProcess();
39    bool AllocateVideoBuffers();
40    bool DeAllocateVideoBuffers();
41
42    // TODO(pbos): Stop using scoped_ptr and resetting the thread.
43    rtc::scoped_ptr<rtc::PlatformThread> _captureThread;
44    CriticalSectionWrapper* _captureCritSect;
45
46    int32_t _deviceId;
47    int32_t _deviceFd;
48
49    int32_t _buffersAllocatedByDevice;
50    int32_t _currentWidth;
51    int32_t _currentHeight;
52    int32_t _currentFrameRate;
53    bool _captureStarted;
54    RawVideoType _captureVideoType;
55    struct Buffer
56    {
57        void *start;
58        size_t length;
59    };
60    Buffer *_pool;
61};
62}  // namespace videocapturemodule
63}  // namespace webrtc
64
65#endif // WEBRTC_MODULES_VIDEO_CAPTURE_MAIN_SOURCE_LINUX_VIDEO_CAPTURE_LINUX_H_
66