breeze/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2026-02-04 14:30:55 +08:00
Code Issues Packages Projects Releases Wiki Activity

lavfi/framesync2: add dualinput helper functions.

Browse Source
This commit is contained in:
Nicolas George
2017-07-17 20:45:52 +02:00
parent 6bde475cf2
commit 0ae8df4109
2 changed files with 103 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
libavfilter/framesync2.h
View File

@@ -245,4 +245,29 @@ int ff_framesync2_get_frame(FFFrameSync *fs, unsigned in, AVFrame **rframe,
*/
int ff_framesync2_activate(FFFrameSync *fs);
/**
* Initialize a frame sync structure for dualinput.
*
* Compared to generic framesync, dualinput assumes the first input is the
* main one and the filtering is performed on it. The first input will be
* the only one with sync set and generic timeline support will just pass it
* unchanged when disabled.
*
* Equivalent to ff_framesync2_init(fs, parent, 2) then setting the time
* base, sync and ext modes on the inputs.
*/
int ff_framesync2_init_dualinput(FFFrameSync *fs, AVFilterContext *parent);
/**
* @param f0 used to return the main frame
* @param f1 used to return the second frame, or NULL if disabled
* @return >=0 for success or AVERROR code
*/
int ff_framesync2_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1);
/**
* Same as ff_framesync2_dualinput_get(), but make sure that f0 is writable.
*/
int ff_framesync2_dualinput_get_writable(FFFrameSync *fs, AVFrame **f0, AVFrame **f1);
#endif /* AVFILTER_FRAMESYNC2_H */