yading@10: /*
yading@10:  * Copyright (C) 2006 Smartjog S.A.S, Baptiste Coudurier <baptiste.coudurier@gmail.com>
yading@10:  * Copyright (C) 2011 Smartjog S.A.S, Clément Bœsch      <clement.boesch@smartjog.com>
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Timecode helpers header
yading@10:  * This *private* API is deprecated, please use the one available in libavutil instead.
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_TIMECODE_H
yading@10: #define AVCODEC_TIMECODE_H
yading@10: 
yading@10: #include "version.h"
yading@10: 
yading@10: #if FF_API_OLD_TIMECODE
yading@10: 
yading@10: #include <stdint.h>
yading@10: #include "avcodec.h"
yading@10: #include "libavutil/rational.h"
yading@10: 
yading@10: #define TIMECODE_OPT(ctx, flags)                                         \
yading@10:     "timecode", "set timecode value following hh:mm:ss[:;.]ff format, "  \
yading@10:                 "use ';' or '.' before frame number for drop frame",     \
yading@10:     offsetof(ctx, tc.str),                                               \
yading@10:     AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, flags
yading@10: 
yading@10: struct ff_timecode {
yading@10:     char *str;       ///< string following the hh:mm:ss[:;.]ff format
yading@10:     int start;       ///< timecode frame start
yading@10:     int drop;        ///< drop flag (1 if drop, else 0)
yading@10:     AVRational rate; ///< Frame rate in rational form
yading@10: };
yading@10: 
yading@10: /**
yading@10:  * @brief           Adjust frame number for NTSC drop frame time code
yading@10:  * @param frame_num Actual frame number to adjust
yading@10:  * @return          Adjusted frame number
yading@10:  * @warning         Adjustment is only valid in NTSC 29.97
yading@10:  */
yading@10: int avpriv_framenum_to_drop_timecode(int frame_num);
yading@10: 
yading@10: /**
yading@10:  * @brief       Convert frame id (timecode) to SMPTE 12M binary representation
yading@10:  * @param frame Frame number
yading@10:  * @param fps   Frame rate
yading@10:  * @param drop  Drop flag
yading@10:  * @return      The actual binary representation
yading@10:  */
yading@10: uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop);
yading@10: 
yading@10: /**
yading@10:  * @brief       Load timecode string in buf
yading@10:  * @param buf   Destination buffer
yading@10:  * @param tc    Timecode struct pointer
yading@10:  * @param frame Frame id (timecode frame is computed with tc->start+frame)
yading@10:  * @return a pointer to the buf parameter
yading@10:  * @note  timecode representation can be a negative timecode and have
yading@10:  *        more than 24 hours.
yading@10:  * @note  buf must have enough space to store the timecode representation: 16
yading@10:  *        bytes is the minimum required size.
yading@10:  */
yading@10: char *avpriv_timecode_to_string(char *buf, const struct ff_timecode *tc, unsigned frame);
yading@10: 
yading@10: /**
yading@10:  * Check if timecode rate is valid and consistent with the drop flag.
yading@10:  *
yading@10:  * @return 0 on success, negative value on failure
yading@10:  */
yading@10: int avpriv_check_timecode_rate(void *avcl, AVRational rate, int drop);
yading@10: 
yading@10: /**
yading@10:  * Parse SMTPE 12M time representation (hh:mm:ss[:;.]ff). str and rate fields
yading@10:  * from tc struct must be set.
yading@10:  *
yading@10:  * @param avcl A pointer to an arbitrary struct of which the first field is a
yading@10:  *             pointer to an AVClass struct (used for av_log).
yading@10:  * @param tc   Timecode struct pointer
yading@10:  * @return     0 on success, negative value on failure
yading@10:  * @warning    Adjustement is only valid in NTSC 29.97
yading@10:  */
yading@10: int avpriv_init_smpte_timecode(void *avcl, struct ff_timecode *tc);
yading@10: 
yading@10: attribute_deprecated int ff_framenum_to_drop_timecode(int frame_num);
yading@10: attribute_deprecated uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop);
yading@10: attribute_deprecated int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc);
yading@10: #endif
yading@10: 
yading@10: #endif /* AVCODEC_TIMECODE_H */