formats.h

/*
 * 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_FORMATS_H
#define AVFILTER_FORMATS_H

#include "avfilter.h"

struct AVFilterFormats {
    unsigned nb_formats;        
    int *formats;               

    unsigned refcount;          
    struct AVFilterFormats ***refs; 
};

typedef struct AVFilterChannelLayouts {
    uint64_t *channel_layouts;  
    int    nb_channel_layouts;  
    char all_layouts;           
    char all_counts;            

    unsigned refcount;          
    struct AVFilterChannelLayouts ***refs; 
} AVFilterChannelLayouts;

#define FF_COUNT2LAYOUT(c) (0x8000000000000000ULL | (c))

#define FF_LAYOUT2COUNT(l) (((l) & 0x8000000000000000ULL) ? \
                           (int)((l) & 0x7FFFFFFF) : 0)

AVFilterChannelLayouts *ff_merge_channel_layouts(AVFilterChannelLayouts *a,
                                                 AVFilterChannelLayouts *b);
AVFilterFormats *ff_merge_samplerates(AVFilterFormats *a,
                                      AVFilterFormats *b);

av_warn_unused_result
AVFilterChannelLayouts *ff_all_channel_layouts(void);

av_warn_unused_result
AVFilterFormats *ff_all_samplerates(void);

av_warn_unused_result
AVFilterChannelLayouts *ff_all_channel_counts(void);

av_warn_unused_result
AVFilterChannelLayouts *avfilter_make_format64_list(const int64_t *fmts);

av_warn_unused_result
AVFilterChannelLayouts *ff_make_formatu64_list(const uint64_t *fmts);


av_warn_unused_result
int ff_set_common_channel_layouts(AVFilterContext *ctx,
                                  AVFilterChannelLayouts *layouts);
av_warn_unused_result
int ff_set_common_samplerates(AVFilterContext *ctx,
                              AVFilterFormats *samplerates);

av_warn_unused_result
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats);

av_warn_unused_result
int ff_add_channel_layout(AVFilterChannelLayouts **l, uint64_t channel_layout);

av_warn_unused_result
int ff_channel_layouts_ref(AVFilterChannelLayouts *f,
                           AVFilterChannelLayouts **ref);

void ff_channel_layouts_unref(AVFilterChannelLayouts **ref);

void ff_channel_layouts_changeref(AVFilterChannelLayouts **oldref,
                                  AVFilterChannelLayouts **newref);

av_warn_unused_result
int ff_default_query_formats(AVFilterContext *ctx);

av_warn_unused_result
int ff_query_formats_all_layouts(AVFilterContext *ctx);

av_warn_unused_result
AVFilterFormats *ff_make_format_list(const int *fmts);

av_warn_unused_result
int ff_add_format(AVFilterFormats **avff, int64_t fmt);

av_warn_unused_result
AVFilterFormats *ff_all_formats(enum AVMediaType type);

av_warn_unused_result
AVFilterFormats *ff_planar_sample_fmts(void);

AVFilterFormats *ff_merge_formats(AVFilterFormats *a, AVFilterFormats *b,
                                  enum AVMediaType type);

av_warn_unused_result
int ff_formats_ref(AVFilterFormats *formats, AVFilterFormats **ref);

void ff_formats_unref(AVFilterFormats **ref);

void ff_formats_changeref(AVFilterFormats **oldref, AVFilterFormats **newref);

#endif /* AVFILTER_FORMATS_H */