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/*
* Copyright (c) 2008 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVFILTER_VSRC_BUFFER_H
#define AVFILTER_VSRC_BUFFER_H
/**
* @file
* memory buffer source API for video
*/
#include "avfilter.h"
/**
* Tell av_vsrc_buffer_add_video_buffer_ref() to overwrite the already
* cached video buffer with the new added one, otherwise the function
* will complain and exit.
*/
#define AV_VSRC_BUF_FLAG_OVERWRITE 1
/**
* Add video buffer data in picref to buffer_src.
*
* @param buffer_src pointer to a buffer source context
* @param flags a combination of AV_VSRC_BUF_FLAG_* flags
* @return >= 0 in case of success, a negative AVERROR code in case of
* failure
*/
int av_vsrc_buffer_add_video_buffer_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_vsrc_buffer_get_nb_failed_requests(AVFilterContext *buffer_src);
#endif /* AVFILTER_VSRC_BUFFER_H */
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