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FFmpeg/libavfilter/buffersrc.h
Michael Niedermayer 91af76099e Merge commit '23aae62c2cb4504a09ceb8cd0cabc1c8b260f521'
* commit '23aae62c2cb4504a09ceb8cd0cabc1c8b260f521':
  alsdec: Check k used for rice decoder.
  avfiltergraph: silence an uninitialized variable warning
  xsubenc: reindent
  lavc: replace AVCodecContext.encode with subtitle-specific callback
  lavc: add const to private codec class initialization.
  avconv: don't pass a bogus parameter to avfilter_graph_create_filter().
  id3v2: strdup the genre name explicitly.
  lavf/id3v2: do not export empty fields.
  buffersrc: add const to the AVFrame* argument of av_buffersrc_write_frame()
  lavfi: replace empty input/output lists with null pointers

Conflicts:
	ffmpeg_filter.c
	libavcodec/alsdec.c
	libavcodec/dvdsubenc.c
	libavcodec/utils.c
	libavcodec/v210dec.h
	libavfilter/af_channelsplit.c
	libavfilter/avfiltergraph.c
	libavfilter/buffersrc.c
	libavfilter/src_movie.c
	libavfilter/vf_ass.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
2012-09-18 14:45:44 +02:00

96 lines
2.8 KiB
C

/*
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_BUFFERSRC_H
#define AVFILTER_BUFFERSRC_H
/**
* @file
* Memory buffer source API.
*/
#include "libavcodec/avcodec.h"
#include "avfilter.h"
enum {
/**
* Do not check for format changes.
*/
AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT = 1,
/**
* Do not copy buffer data.
*/
AV_BUFFERSRC_FLAG_NO_COPY = 2,
/**
* Immediately push the frame to the output.
*/
AV_BUFFERSRC_FLAG_PUSH = 4,
};
/**
* Add buffer data in picref to buffer_src.
*
* @param buffer_src pointer to a buffer source context
* @param picref a buffer reference, or NULL to mark EOF
* @param flags a combination of AV_BUFFERSRC_FLAG_*
* @return >= 0 in case of success, a negative AVERROR code
* in case of failure
*/
int av_buffersrc_add_ref(AVFilterContext *buffer_src,
AVFilterBufferRef *picref, int flags);
/**
* Get the number of failed requests.
*
* A failed request is when the request_frame method is called while no
* frame is present in the buffer.
* The number is reset when a frame is added.
*/
unsigned av_buffersrc_get_nb_failed_requests(AVFilterContext *buffer_src);
#ifdef FF_API_BUFFERSRC_BUFFER
/**
* Add a buffer to the filtergraph s.
*
* @param buf buffer containing frame data to be passed down the filtergraph.
* This function will take ownership of buf, the user must not free it.
* A NULL buf signals EOF -- i.e. no more frames will be sent to this filter.
* @deprecated Use av_buffersrc_add_ref(s, picref, AV_BUFFERSRC_FLAG_NO_COPY) instead.
*/
attribute_deprecated
int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf);
#endif
/**
* Add a frame to the buffer source.
*
* @param s an instance of the buffersrc filter.
* @param frame frame to be added.
*
* @warning frame data will be memcpy()ed, which may be a big performance
* hit. Use av_buffersrc_buffer() to avoid copying the data.
*/
int av_buffersrc_write_frame(AVFilterContext *s, const AVFrame *frame);
#endif /* AVFILTER_BUFFERSRC_H */