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VideoPipeline.h
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28 
29 #ifndef VIDEO_PIPELINE_H
30 #define VIDEO_PIPELINE_H
31 
32 #include <EGL/egl.h>
33 #include <EGL/eglext.h>
34 
35 #ifdef GST_SUPPORTED
36 #include <gst/gst.h>
37 #endif
38 
39 namespace ArgusSamples
40 {
41 
42 /**
43  * Record a video from a EGL stream
44  */
46 {
47 public:
48  VideoPipeline();
50 
51  /**
52  * Supported video formats
53  */
54  typedef enum
55  {
60  } VideoFormat;
61 
62  /**
63  * Video BitRate presets
64  */
65  typedef enum
66  {
67  VIDEO_BITRATE_4M = 4000000,
68  VIDEO_BITRATE_8M = 8000000,
69  VIDEO_BITRATE_14M = 14000000,
70  VIDEO_BITRATE_20M = 20000000,
71  VIDEO_BITRATE_MAX = 240000000
72  } VideoBitRate;
73 
74  /**
75  * Supported video file types
76  */
77  typedef enum
78  {
84  } VideoFileType;
85 
86  /**
87  * Video AVC profile types, each profile indicates support for various
88  * performance bounds and different annexes.
89  */
90  typedef enum {
96  VIDEO_AVC_PROFILE_MAX = 0x7FFFFFFF
98 
99  /**
100  * Destroy the video pipeline
101  */
102  bool destroy();
103 
104  /**
105  * Setup the video pipeline for recording
106  *
107  * @param[in] videoStream EGL stream to record from
108  * @param[in] width Width of the recorded video
109  * @param[in] height Height of the recorded video
110  * @param[in] frameRate Frame rate
111  * @param[in] fileName File name
112  * @param[in] videoFormat Video format
113  * @param[in] videoFileType Video file type
114  * @param[in] bitRate Bitrate, if 0 the bitrate will be selected depending on the
115  * resolution
116  */
117  bool setupForRecording(EGLStreamKHR videoStream, uint32_t width, uint32_t height,
118  float frameRate, const char *fileName,
119  VideoFormat videoFormat = VIDEO_FORMAT_H264,
120  VideoFileType videoFileType = VIDEO_FILE_TYPE_MP4, uint32_t bitRate = 0);
121 
122  /**
123  * Setup the video pipeline for playback
124  *
125  * @param[out] videoStream EGL stream
126  * @param[in] fileName File name
127  */
128  bool setupForPlayback(EGLStreamKHR *videoStream, const char *fileName);
129 
130  /**
131  * Start recording/playback
132  */
133  bool start();
134 
135  /**
136  * Pause recording/playback
137  */
138  bool pause();
139 
140  /**
141  * Toggle recording/playback
142  */
143  bool toggle();
144 
145  /**
146  * Rewind (playback only)
147  */
148  bool rewind();
149 
150  /**
151  * Stop recording/playback
152  */
153  bool stop();
154 
155  /**
156  * Get the file extension for a video file type.
157  */
158  static const char* getFileExtension(VideoFileType fileType);
159 
160  /**
161  * Get the aspect ratio of the video. The video has to be in paused or playing state.
162  *
163  * @param aspectRatio [out]
164  */
165  bool getAspectRatio(float *aspectRatio) const;
166 
167 private:
168 #ifdef GST_SUPPORTED
169  GstState m_state;
170 
171  GstElement *m_pipeline;
172 #endif
173 };
174 
175 }; // namespace ArgusSamples
176 
177 #endif // VIDEO_PIPELINE_H