libavcodec/timecode.h

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/*
 * Copyright (C) 2006 Smartjog S.A.S, Baptiste Coudurier <baptiste.coudurier@gmail.com>
 * Copyright (C) 2011 Smartjog S.A.S, Clément Bœsch      <clement.boesch@smartjog.com>
 *
 * 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 AVCODEC_TIMECODE_H
#define AVCODEC_TIMECODE_H

#include <stdint.h>
#include "avcodec.h"
#include "libavutil/rational.h"

#define TIMECODE_OPT(ctx, flags)                                         \
    "timecode", "set timecode value following hh:mm:ss[:;.]ff format, "  \
                "use ';' or '.' before frame number for drop frame",     \
    offsetof(ctx, tc.str),                                               \
    AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, flags

struct ff_timecode {
    char *str;       
    int start;       
    int drop;        
    AVRational rate; 
};

int avpriv_framenum_to_drop_timecode(int frame_num);

uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop);

char *avpriv_timecode_to_string(char *buf, const struct ff_timecode *tc, unsigned frame);

int avpriv_check_timecode_rate(void *avcl, AVRational rate, int drop);

int avpriv_init_smpte_timecode(void *avcl, struct ff_timecode *tc);

#if FF_API_OLD_TIMECODE
attribute_deprecated int ff_framenum_to_drop_timecode(int frame_num);
attribute_deprecated uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop);
attribute_deprecated int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc);
#endif

#endif /* AVCODEC_TIMECODE_H */

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