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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  {
61  } VideoFormat;
62 
63  /**
64  * Supported video file types
65  */
66  typedef enum
67  {
73  } VideoFileType;
74 
75  /**
76  * Destroy the video pipeline
77  */
78  bool destroy();
79 
80  /**
81  * Setup the video pipeline for recording
82  *
83  * @param[in] videoStream EGL stream to record from
84  * @param[in] width Width of the recorded video
85  * @param[in] height Height of the recorded video
86  * @param[in] frameRate Frame rate
87  * @param[in] fileName File name
88  * @param[in] videoFormat Video format
89  * @param[in] videoFileType Video file type
90  * @param[in] bitRate Bitrate, if 0 the bitrate will be selected depending on the
91  * resolution
92  */
93  bool setupForRecording(EGLStreamKHR videoStream, uint32_t width, uint32_t height,
94  float frameRate, const char *fileName,
95  VideoFormat videoFormat = VIDEO_FORMAT_H264,
96  VideoFileType videoFileType = VIDEO_FILE_TYPE_MP4, uint32_t bitRate = 0);
97 
98  /**
99  * Setup the video pipeline for playback
100  *
101  * @param[out] videoStream EGL stream
102  * @param[in] fileName File name
103  */
104  bool setupForPlayback(EGLStreamKHR *videoStream, const char *fileName);
105 
106  /**
107  * Start recording/playback
108  */
109  bool start();
110 
111  /**
112  * Pause recording/playback
113  */
114  bool pause();
115 
116  /**
117  * Toggle recording/playback
118  */
119  bool toggle();
120 
121  /**
122  * Rewind (playback only)
123  */
124  bool rewind();
125 
126  /**
127  * Stop recording/playback
128  */
129  bool stop();
130 
131  /**
132  * Get the file extension for a video file type.
133  */
134  static const char* getFileExtension(VideoFileType fileType);
135 
136  /**
137  * Get the aspect ratio of the video. The video has to be in paused or playing state.
138  *
139  * @param aspectRatio [out]
140  */
141  bool getAspectRatio(float *aspectRatio) const;
142 
143 private:
144 #ifdef GST_SUPPORTED
145  GstState m_state;
146 
147  GstElement *m_pipeline;
148 #endif
149 };
150 
151 }; // namespace ArgusSamples
152 
153 #endif // VIDEO_PIPELINE_H