pjmedia_vid_dev_cb Struct Reference

Data Fields
pj_status_t(*	capture_cb )(pjmedia_vid_dev_stream *stream, void *user_data, pjmedia_frame *frame)
pj_status_t(*	render_cb )(pjmedia_vid_dev_stream *stream, void *user_data, pjmedia_frame *frame)

Field Documentation

capture_cb

pj_status_t(* pjmedia_vid_dev_cb::capture_cb) (pjmedia_vid_dev_stream *stream, void *user_data, pjmedia_frame *frame)

This callback is called by capturer stream when it has captured the whole packet worth of video samples.

Parameters

stream	The video stream.
user_data	User data associated with the stream.
frame	Captured frame.

Returns

Returning non-PJ_SUCCESS will cause the video stream to stop

render_cb

pj_status_t(* pjmedia_vid_dev_cb::render_cb) (pjmedia_vid_dev_stream *stream, void *user_data, pjmedia_frame *frame)

This callback is called by renderer stream when it needs additional data to be rendered by the device. Application must fill in the whole of output buffer with video samples.

The frame argument contains the following values:

• timestamp Rendering timestamp, in samples.
• buf Buffer to be filled out by application.
• size The size requested in bytes, which will be equal to the size of one whole packet.

Parameters

stream	The video stream.
user_data	User data associated with the stream.
frame	Video frame, which buffer is to be filled in by the application.

Returns

Returning non-PJ_SUCCESS will cause the video stream to stop

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The documentation for this struct was generated from the following file:

• pjmedia/videodev.h