libavfilter/internal.h

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/*
 * 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_INTERNAL_H
#define AVFILTER_INTERNAL_H

#include "avfilter.h"
#include "avfiltergraph.h"
#include "formats.h"

#define POOL_SIZE 32
typedef struct AVFilterPool {
    AVFilterBufferRef *pic[POOL_SIZE];
    int count;
    int refcount;
    int draining;
} AVFilterPool;

typedef struct AVFilterCommand {
    double time;                
    char *command;              
    char *arg;                  
    int flags;
    struct AVFilterCommand *next;
} AVFilterCommand;

int ff_avfilter_graph_check_validity(AVFilterGraph *graphctx, AVClass *log_ctx);

int ff_avfilter_graph_config_links(AVFilterGraph *graphctx, AVClass *log_ctx);

int ff_avfilter_graph_config_formats(AVFilterGraph *graphctx, AVClass *log_ctx);

void ff_avfilter_graph_update_heap(AVFilterGraph *graph, AVFilterLink *link);

void ff_avfilter_default_free_buffer(AVFilterBuffer *buf);

int ff_fmt_is_in(int fmt, const int *fmts);

int *ff_copy_int_list(const int * const list);

int64_t *ff_copy_int64_list(const int64_t * const list);

/* Functions to parse audio format arguments */

int ff_parse_pixel_format(enum PixelFormat *ret, const char *arg, void *log_ctx);

int ff_parse_sample_rate(int *ret, const char *arg, void *log_ctx);

int ff_parse_time_base(AVRational *ret, const char *arg, void *log_ctx);

int ff_parse_sample_format(int *ret, const char *arg, void *log_ctx);

int ff_parse_channel_layout(int64_t *ret, const char *arg, void *log_ctx);

static inline void ff_null_start_frame_keep_ref(AVFilterLink *inlink,
                                                AVFilterBufferRef *picref)
{
    avfilter_start_frame(inlink->dst->outputs[0], avfilter_ref_buffer(picref, ~0));
}

void ff_update_link_current_pts(AVFilterLink *link, int64_t pts);

void ff_free_pool(AVFilterPool *pool);

void ff_command_queue_pop(AVFilterContext *filter);

#define FF_DPRINTF_START(ctx, func) av_dlog(NULL, "%-16s: ", #func)

void ff_dlog_link(void *ctx, AVFilterLink *link, int end);

#endif /* AVFILTER_INTERNAL_H */

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