|  |  |  | libempathy-gtk Reference Manual |  | 
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enum EmpathyGstVideoSrcChannel; #define EMPATHY_GST_VIDEO_SRC_SUPPORTS_CONTRAST #define EMPATHY_GST_VIDEO_SRC_SUPPORTS_BRIGHTNESS #define EMPATHY_GST_VIDEO_SRC_SUPPORTS_GAMMA EmpathyGstVideoSrc; GstElement * empathy_video_src_new (void); guint empathy_video_src_get_supported_channels (GstElement *src); void empathy_video_src_set_channel (GstElement *src, EmpathyGstVideoSrcChannel channel, guint percent); guint empathy_video_src_get_channel (GstElement *src, EmpathyGstVideoSrcChannel channel);
typedef enum {
  EMPATHY_GST_VIDEO_SRC_CHANNEL_CONTRAST = 0,
  EMPATHY_GST_VIDEO_SRC_CHANNEL_BRIGHTNESS = 1,
  EMPATHY_GST_VIDEO_SRC_CHANNEL_GAMMA = 2,
  NR_EMPATHY_GST_VIDEO_SRC_CHANNELS
} EmpathyGstVideoSrcChannel;
guint empathy_video_src_get_supported_channels (GstElement *src);
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void                empathy_video_src_set_channel       (GstElement *src,
                                                         EmpathyGstVideoSrcChannel channel,
                                                         guint percent);
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guint empathy_video_src_get_channel (GstElement *src, EmpathyGstVideoSrcChannel channel);
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