mirror of
https://github.com/nyanmisaka/ffmpeg-rockchip.git
synced 2025-10-30 20:16:42 +08:00
96 lines
2.8 KiB
C
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, AVFrame *frame);
|
|
|
|
#endif /* AVFILTER_BUFFERSRC_H */
|