chromium/third_party/ffmpeg/libavutil/timecode.c

/*
 * Copyright (c) 2006 Smartjog S.A.S, Baptiste Coudurier <[email protected]>
 * Copyright (c) 2011-2012 Smartjog S.A.S, Clément Bœsch <[email protected]>
 *
 * 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
 */

/**
 * @file
 * Timecode helpers
 * @see https://en.wikipedia.org/wiki/SMPTE_time_code
 * @see http://www.dropframetimecode.org
 */

#include <stdio.h>
#include "common.h"
#include "timecode.h"
#include "log.h"
#include "error.h"

int av_timecode_adjust_ntsc_framenum2(int framenum, int fps)
{ … }

uint32_t av_timecode_get_smpte_from_framenum(const AVTimecode *tc, int framenum)
{ … }

uint32_t av_timecode_get_smpte(AVRational rate, int drop, int hh, int mm, int ss, int ff)
{ … }

char *av_timecode_make_string(const AVTimecode *tc, char *buf, int framenum)
{ … }

static unsigned bcd2uint(uint8_t bcd)
{ … }

char *av_timecode_make_smpte_tc_string2(char *buf, AVRational rate, uint32_t tcsmpte, int prevent_df, int skip_field)
{ … }

char *av_timecode_make_smpte_tc_string(char *buf, uint32_t tcsmpte, int prevent_df)
{ … }

char *av_timecode_make_mpeg_tc_string(char *buf, uint32_t tc25bit)
{ … }

static int check_fps(int fps)
{ … }

static int check_timecode(void *log_ctx, AVTimecode *tc)
{ … }

static int fps_from_frame_rate(AVRational rate)
{ … }

int av_timecode_check_frame_rate(AVRational rate)
{ … }

int av_timecode_init(AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx)
{ … }

int av_timecode_init_from_components(AVTimecode *tc, AVRational rate, int flags, int hh, int mm, int ss, int ff, void *log_ctx)
{ … }

int av_timecode_init_from_string(AVTimecode *tc, AVRational rate, const char *str, void *log_ctx)
{ … }