#include "libavcodec/dvdata.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mathematics.h"
+#include "libavutil/timecode.h"
#include "dv.h"
#include "libavutil/avassert.h"
return size;
}
-static int bcd2int(uint8_t bcd)
+static int dv_extract_timecode(DVDemuxContext* c, uint8_t* frame, char *tc)
{
- int low = bcd & 0xf;
- int high = bcd >> 4;
- if (low > 9 || high > 9)
- return -1;
- return low + 10*high;
-}
-
-static int dv_extract_timecode(DVDemuxContext* c, uint8_t* frame, char tc[32])
-{
- int hh, mm, ss, ff, drop_frame;
const uint8_t *tc_pack;
- tc_pack = dv_extract_pack(frame, dv_timecode);
- if (!tc_pack)
- return 0;
-
- ff = bcd2int(tc_pack[1] & 0x3f);
- ss = bcd2int(tc_pack[2] & 0x7f);
- mm = bcd2int(tc_pack[3] & 0x7f);
- hh = bcd2int(tc_pack[4] & 0x3f);
- drop_frame = tc_pack[1] >> 6 & 0x1;
-
- if (ff < 0 || ss < 0 || mm < 0 || hh < 0)
- return -1;
-
// For PAL systems, drop frame bit is replaced by an arbitrary
// bit so its value should not be considered. Drop frame timecode
// is only relevant for NTSC systems.
- if(c->sys->ltc_divisor == 25 || c->sys->ltc_divisor == 50) {
- drop_frame = 0;
- }
+ int prevent_df = c->sys->ltc_divisor == 25 || c->sys->ltc_divisor == 50;
- snprintf(tc, 32, "%02d:%02d:%02d%c%02d",
- hh, mm, ss, drop_frame ? ';' : ':', ff);
+ tc_pack = dv_extract_pack(frame, dv_timecode);
+ if (!tc_pack)
+ return 0;
+ av_timecode_make_smpte_tc_string(tc, AV_RB32(tc_pack + 1), prevent_df);
return 1;
}
static int dv_read_timecode(AVFormatContext *s) {
int ret;
- char timecode[32];
+ char timecode[AV_TIMECODE_STR_SIZE];
int64_t pos = avio_tell(s->pb);
// Read 3 DIF blocks: Header block and 2 Subcode blocks.