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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  {
59  } VideoFormat;
60 
61  /**
62  * Supported video file types
63  */
64  typedef enum
65  {
71  } VideoFileType;
72 
73  /**
74  * Destroy the video pipeline
75  */
76  bool destroy();
77 
78  /**
79  * Setup the video pipeline for recording
80  *
81  * @param[in] videoStream EGL stream to record from
82  * @param[in] width Width of the recorded video
83  * @param[in] height Height of the recorded video
84  * @param[in] frameRate Frame rate
85  * @param[in] fileName File name
86  * @param[in] videoFormat Video format
87  * @param[in] videoFileType Video file type
88  * @param[in] bitRate Bitrate, if 0 the bitrate will be selected depending on the
89  * resolution
90  */
91  bool setupForRecording(EGLStreamKHR videoStream, uint32_t width, uint32_t height,
92  float frameRate, const char *fileName,
93  VideoFormat videoFormat = VIDEO_FORMAT_H264,
94  VideoFileType videoFileType = VIDEO_FILE_TYPE_MP4, uint32_t bitRate = 0);
95 
96  /**
97  * Setup the video pipeline for playback
98  *
99  * @param[out] videoStream EGL stream
100  * @param[in] fileName File name
101  */
102  bool setupForPlayback(EGLStreamKHR *videoStream, const char *fileName);
103 
104  /**
105  * Start recording/playback
106  */
107  bool start();
108 
109  /**
110  * Pause recording/playback
111  */
112  bool pause();
113 
114  /**
115  * Toggle recording/playback
116  */
117  bool toggle();
118 
119  /**
120  * Rewind (playback only)
121  */
122  bool rewind();
123 
124  /**
125  * Stop recording/playback
126  */
127  bool stop();
128 
129  /**
130  * Get the file extension for a video file type.
131  */
132  static const char* getFileExtension(VideoFileType fileType);
133 
134  /**
135  * Get the aspect ratio of the video. The video has to be in paused or playing state.
136  *
137  * @param aspectRatio [out]
138  */
139  bool getAspectRatio(float *aspectRatio) const;
140 
141 private:
142 #ifdef GST_SUPPORTED
143  GstState m_state;
144 
145  GstElement *m_pipeline;
146 #endif
147 };
148 
149 }; // namespace ArgusSamples
150 
151 #endif // VIDEO_PIPELINE_H