mirror of
https://github.com/FFmpeg/FFmpeg.git
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125 lines
3.9 KiB
C
125 lines
3.9 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVFILTER_INTERNAL_H
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#define AVFILTER_INTERNAL_H
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/**
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* @file
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* internal API functions
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*/
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#include "avfilter.h"
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#include "avfiltergraph.h"
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#define POOL_SIZE 32
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typedef struct AVFilterPool {
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AVFilterBufferRef *pic[POOL_SIZE];
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int count;
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} AVFilterPool;
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typedef struct AVFilterCommand {
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double time; ///< time expressed in seconds
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char *command; ///< command
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char *arg; ///< optional argument for the command
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int flags;
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struct AVFilterCommand *next;
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} AVFilterCommand;
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/**
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* Check for the validity of graph.
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*
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* A graph is considered valid if all its input and output pads are
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* connected.
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*
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* @return 0 in case of success, a negative value otherwise
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*/
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int ff_avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);
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/**
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* Configure all the links of graphctx.
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*
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* @return 0 in case of success, a negative value otherwise
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*/
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int ff_avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);
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/**
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* Configure the formats of all the links in the graph.
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*/
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int ff_avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);
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/** default handler for freeing audio/video buffer when there are no references left */
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void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);
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/** Tell is a format is contained in the provided list terminated by -1. */
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int ff_fmt_is_in(int fmt, const int *fmts);
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/* Functions to parse audio format arguments */
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/**
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* Parse a pixel format.
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*
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* @param ret pixel format pointer to where the value should be written
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* @param arg string to parse
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* @param log_ctx log context
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* @return 0 in case of success, a negative AVERROR code on error
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*/
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int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx);
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/**
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* Parse a sample rate.
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*
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* @param ret unsigned integer pointer to where the value should be written
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* @param arg string to parse
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* @param log_ctx log context
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* @return 0 in case of success, a negative AVERROR code on error
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*/
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int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);
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/**
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* Parse a sample format name or a corresponding integer representation.
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*
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* @param ret integer pointer to where the value should be written
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* @param arg string to parse
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* @param log_ctx log context
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* @return 0 in case of success, a negative AVERROR code on error
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*/
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int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);
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/**
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* Parse a channel layout or a corresponding integer representation.
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*
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* @param ret 64bit integer pointer to where the value should be written.
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* @param arg string to parse
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* @param log_ctx log context
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* @return 0 in case of success, a negative AVERROR code on error
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*/
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int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx);
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/**
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* Parse a packing format or a corresponding integer representation.
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*
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* @param ret integer pointer to where the value should be written
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* @param arg string to parse
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* @param log_ctx log context
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* @return 0 in case of success, a negative AVERROR code on error
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*/
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int ff_parse_packing_format(int *ret, const char *arg, void *log_ctx);
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#endif /* AVFILTER_INTERNAL_H */
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