#include <stdint.h>
#include "rational.h"
Go to the source code of this file.
Data Structures | |
| struct | AVTimecode |
Defines | |
| #define | AV_TIMECODE_STR_SIZE 16 |
Enumerations | |
| enum | AVTimecodeFlag { AV_TIMECODE_FLAG_DROPFRAME = 1<<0, AV_TIMECODE_FLAG_24HOURSMAX = 1<<1, AV_TIMECODE_FLAG_ALLOWNEGATIVE = 1<<2 } |
Functions | |
| attribute_deprecated int | av_timecode_adjust_ntsc_framenum (int framenum) |
| Adjust frame number for NTSC drop frame time code. | |
| int | av_timecode_adjust_ntsc_framenum2 (int framenum, int fps) |
| Adjust frame number for NTSC drop frame time code. | |
| uint32_t | av_timecode_get_smpte_from_framenum (const AVTimecode *tc, int framenum) |
| Convert frame number to SMPTE 12M binary representation. | |
| char * | av_timecode_make_string (const AVTimecode *tc, char *buf, int framenum) |
| Load timecode string in buf. | |
| char * | av_timecode_make_smpte_tc_string (char *buf, uint32_t tcsmpte, int prevent_df) |
| Get the timecode string from the SMPTE timecode format. | |
| char * | av_timecode_make_mpeg_tc_string (char *buf, uint32_t tc25bit) |
| Get the timecode string from the 25-bit timecode format (MPEG GOP format). | |
| int | av_timecode_init (AVTimecode *tc, AVRational rate, int flags, int frame_start, void *log_ctx) |
| Init a timecode struct with the passed parameters. | |
| int | av_timecode_init_from_string (AVTimecode *tc, AVRational rate, const char *str, void *log_ctx) |
| Parse timecode representation (hh:mm:ss[:;. | |
| int | av_timecode_check_frame_rate (AVRational rate) |
| Check if the timecode feature is available for the given frame rate. | |
Definition in file timecode.h.
| #define AV_TIMECODE_STR_SIZE 16 |
Definition at line 33 of file timecode.h.
Referenced by av_timecode_make_mpeg_tc_string(), av_timecode_make_smpte_tc_string(), av_timecode_make_string(), draw_text(), dv_read_timecode(), mpeg_decode_gop(), mxf_add_timecode_metadata(), parse_timecode_in_framenum_format(), and show_stream().
| enum AVTimecodeFlag |
| AV_TIMECODE_FLAG_DROPFRAME | timecode is drop frame |
| AV_TIMECODE_FLAG_24HOURSMAX | timecode wraps after 24 hours |
| AV_TIMECODE_FLAG_ALLOWNEGATIVE | negative time values are allowed |
Definition at line 35 of file timecode.h.
Adjust frame number for NTSC drop frame time code.
| framenum | frame number to adjust |
Definition at line 35 of file timecode.c.
Adjust frame number for NTSC drop frame time code.
| framenum | frame number to adjust | |
| fps | frame per second, 30 or 60 |
Definition at line 45 of file timecode.c.
Referenced by av_timecode_get_smpte_from_framenum(), av_timecode_make_string(), and mpeg1_encode_sequence_header().
| int av_timecode_check_frame_rate | ( | AVRational | rate | ) |
Check if the timecode feature is available for the given frame rate.
Definition at line 185 of file timecode.c.
Referenced by mov_create_timecode_track().
| uint32_t av_timecode_get_smpte_from_framenum | ( | const AVTimecode * | tc, | |
| int | framenum | |||
| ) |
Convert frame number to SMPTE 12M binary representation.
| tc | timecode data correctly initialized | |
| framenum | frame number |
The frame number is relative to tc->start.
Color frame (CF), binary group flags (BGF) and biphase mark polarity correction (PC) bits are set to zero.
Definition at line 63 of file timecode.c.
Referenced by dv_write_pack(), and mxf_write_system_item().
| int av_timecode_init | ( | AVTimecode * | tc, | |
| AVRational | rate, | |||
| int | flags, | |||
| int | frame_start, | |||
| void * | log_ctx | |||
| ) |
Init a timecode struct with the passed parameters.
| log_ctx | a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct (used for av_log) | |
| tc | pointer to an allocated AVTimecode | |
| rate | frame rate in rational form | |
| flags | miscellaneous flags such as drop frame, +24 hours, ... (see AVTimecodeFlag) | |
| frame_start | the first frame number |
Definition at line 190 of file timecode.c.
Referenced by dv_write_header(), mxf_parse_structural_metadata(), mxf_write_header(), and parse_timecode_in_framenum_format().
| int av_timecode_init_from_string | ( | AVTimecode * | tc, | |
| AVRational | rate, | |||
| const char * | str, | |||
| void * | log_ctx | |||
| ) |
Parse timecode representation (hh:mm:ss[:;.
]ff).
| log_ctx | a pointer to an arbitrary struct of which the first field is a pointer to an AVClass struct (used for av_log). | |
| tc | pointer to an allocated AVTimecode | |
| rate | frame rate in rational form | |
| str | timecode string which will determine the frame start |
Definition at line 200 of file timecode.c.
Referenced by dv_write_header(), encode_init(), init(), mov_create_timecode_track(), and mxf_write_header().
| char* av_timecode_make_mpeg_tc_string | ( | char * | buf, | |
| uint32_t | tc25bit | |||
| ) |
Get the timecode string from the 25-bit timecode format (MPEG GOP format).
| buf | destination buffer, must be at least AV_TIMECODE_STR_SIZE long | |
| tc25bit | the 25-bits timecode |
Definition at line 138 of file timecode.c.
Referenced by mpeg_decode_gop(), and show_stream().
| char* av_timecode_make_smpte_tc_string | ( | char * | buf, | |
| uint32_t | tcsmpte, | |||
| int | prevent_df | |||
| ) |
Get the timecode string from the SMPTE timecode format.
| buf | destination buffer, must be at least AV_TIMECODE_STR_SIZE long | |
| tcsmpte | the 32-bit SMPTE timecode | |
| prevent_df | prevent the use of a drop flag when it is known the DF bit is arbitrary |
Definition at line 126 of file timecode.c.
Referenced by dv_extract_timecode().
| char* av_timecode_make_string | ( | const AVTimecode * | tc, | |
| char * | buf, | |||
| int | framenum | |||
| ) |
Load timecode string in buf.
| buf | destination buffer, must be at least AV_TIMECODE_STR_SIZE long | |
| tc | timecode data correctly initialized | |
| framenum | frame number |
The frame number is relative to tc->start.
Definition at line 92 of file timecode.c.
Referenced by draw_text(), mxf_add_timecode_metadata(), and parse_timecode_in_framenum_format().
1.5.8