libavfilter/avfiltergraph.h

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/*
 * Filter graphs
 * copyright (c) 2007 Bobby Bingham
 *
 * 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_AVFILTERGRAPH_H
#define AVFILTER_AVFILTERGRAPH_H

#include "avfilter.h"
#include "libavutil/log.h"

typedef struct AVFilterGraph {
    const AVClass *av_class;
    unsigned filter_count;
    AVFilterContext **filters;

    char *scale_sws_opts; 

    AVFilterLink **sink_links;
    int sink_links_count;

    unsigned disable_auto_convert;
} AVFilterGraph;

AVFilterGraph *avfilter_graph_alloc(void);

AVFilterContext *avfilter_graph_get_filter(AVFilterGraph *graph, char *name);

int avfilter_graph_add_filter(AVFilterGraph *graphctx, AVFilterContext *filter);

int avfilter_graph_create_filter(AVFilterContext **filt_ctx, AVFilter *filt,
                                 const char *name, const char *args, void *opaque,
                                 AVFilterGraph *graph_ctx);

void avfilter_graph_set_auto_convert(AVFilterGraph *graph, unsigned flags);

enum {
    AVFILTER_AUTO_CONVERT_ALL  =  0, 
    AVFILTER_AUTO_CONVERT_NONE = -1, 
};

int avfilter_graph_config(AVFilterGraph *graphctx, void *log_ctx);

void avfilter_graph_free(AVFilterGraph **graph);

typedef struct AVFilterInOut {
    char *name;

    AVFilterContext *filter_ctx;

    int pad_idx;

    struct AVFilterInOut *next;
} AVFilterInOut;

AVFilterInOut *avfilter_inout_alloc(void);

void avfilter_inout_free(AVFilterInOut **inout);

int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
                         AVFilterInOut **inputs, AVFilterInOut **outputs,
                         void *log_ctx);

int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
                          AVFilterInOut **inputs,
                          AVFilterInOut **outputs);


int avfilter_graph_send_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, char *res, int res_len, int flags);

int avfilter_graph_queue_command(AVFilterGraph *graph, const char *target, const char *cmd, const char *arg, int flags, double ts);


char *avfilter_graph_dump(AVFilterGraph *graph, const char *options);

int avfilter_graph_request_oldest(AVFilterGraph *graph);

#endif /* AVFILTER_AVFILTERGRAPH_H */

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