video_x11_channel.h revision 2056ee3e3c7683ae4b2c4b12da99c3105c4f46a9 
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_RENDER_MAIN_SOURCE_LINUX_VIDEO_X11_CHANNEL_H_
12#define WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_LINUX_VIDEO_X11_CHANNEL_H_
13
14#include <sys/shm.h>
15#include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
16#include "webrtc/modules/video_render/include/video_render_defines.h"
17
18#include <X11/Xlib.h>
19#include <X11/Xutil.h>
20#include <X11/extensions/XShm.h>
21
22namespace webrtc {
23class CriticalSectionWrapper;
24
25#define DEFAULT_RENDER_FRAME_WIDTH 352
26#define DEFAULT_RENDER_FRAME_HEIGHT 288
27
28
29class VideoX11Channel: public VideoRenderCallback
30{
31public:
32    VideoX11Channel(int32_t id);
33
34    virtual ~VideoX11Channel();
35
36    virtual int32_t RenderFrame(const uint32_t streamId,
37                                I420VideoFrame& videoFrame);
38
39    int32_t FrameSizeChange(int32_t width, int32_t height,
40                            int32_t numberOfStreams);
41    int32_t DeliverFrame(const I420VideoFrame& videoFrame);
42    int32_t GetFrameSize(int32_t& width, int32_t& height);
43    int32_t Init(Window window, float left, float top, float right,
44                 float bottom);
45    int32_t ChangeWindow(Window window);
46    int32_t
47            GetStreamProperties(uint32_t& zOrder, float& left,
48                                float& top, float& right, float& bottom) const;
49    int32_t ReleaseWindow();
50
51    bool IsPrepared()
52    {
53        return _prepared;
54    }
55
56private:
57
58    int32_t
59            CreateLocalRenderer(int32_t width, int32_t height);
60    int32_t RemoveRenderer();
61
62    //FIXME a better place for this method? the GetWidthHeight no longer
63    // supported by common_video.
64    int GetWidthHeight(VideoType type, int bufferSize, int& width,
65                       int& height);
66
67    CriticalSectionWrapper& _crit;
68
69    Display* _display;
70    XShmSegmentInfo _shminfo;
71    XImage* _image;
72    Window _window;
73    GC _gc;
74    int32_t _width; // incoming frame width
75    int32_t _height; // incoming frame height
76    int32_t _outWidth; // render frame width
77    int32_t _outHeight; // render frame height
78    int32_t _xPos; // position within window
79    int32_t _yPos;
80    bool _prepared; // true if ready to use
81    int32_t _dispCount;
82
83    unsigned char* _buffer;
84    float _top;
85    float _left;
86    float _right;
87    float _bottom;
88
89    int32_t _Id;
90
91};
92
93
94}  // namespace webrtc
95
96#endif // WEBRTC_MODULES_VIDEO_RENDER_MAIN_SOURCE_LINUX_VIDEO_X11_CHANNEL_H_
97