From 803391f7195ba37a553026009ff989d6e2625d8f Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Wed, 30 May 2012 11:20:32 +0200 Subject: lavfi: remove request/poll and drawing functions from public API on next bump They are only useful inside filters and we don't allow user filters for now. --- libavfilter/video.h | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'libavfilter/video.h') diff --git a/libavfilter/video.h b/libavfilter/video.h index 2256482eee..7c9f9a0d28 100644 --- a/libavfilter/video.h +++ b/libavfilter/video.h @@ -29,4 +29,39 @@ void ff_null_start_frame(AVFilterLink *link, AVFilterBufferRef *picref); void ff_null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir); void ff_null_end_frame(AVFilterLink *link); +/** + * Notify the next filter of the start of a frame. + * + * @param link the output link the frame will be sent over + * @param picref A reference to the frame about to be sent. The data for this + * frame need only be valid once draw_slice() is called for that + * portion. The receiving filter will free this reference when + * it no longer needs it. + */ +void ff_start_frame(AVFilterLink *link, AVFilterBufferRef *picref); + +/** + * Notify the next filter that the current frame has finished. + * + * @param link the output link the frame was sent over + */ +void ff_end_frame(AVFilterLink *link); + +/** + * Send a slice to the next filter. + * + * Slices have to be provided in sequential order, either in + * top-bottom or bottom-top order. If slices are provided in + * non-sequential order the behavior of the function is undefined. + * + * @param link the output link over which the frame is being sent + * @param y offset in pixels from the top of the image for this slice + * @param h height of this slice in pixels + * @param slice_dir the assumed direction for sending slices, + * from the top slice to the bottom slice if the value is 1, + * from the bottom slice to the top slice if the value is -1, + * for other values the behavior of the function is undefined. + */ +void ff_draw_slice(AVFilterLink *link, int y, int h, int slice_dir); + #endif /* AVFILTER_VIDEO_H */ -- cgit v1.2.3