#include "timecode.h"
#include "libavutil/log.h"
-int ff_framenum_to_drop_timecode(int frame_num)
+int avpriv_framenum_to_drop_timecode(int frame_num)
{
/* only works for NTSC 29.97 */
int d = frame_num / 17982;
return frame_num + 18 * d + 2 * ((m - 2) / 1798);
}
-uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop)
+uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop)
{
return (0 << 31) | // color frame flag
(drop << 30) | // drop frame flag
( (frame / (fps * 3600) % 24)) % 10; // units of hours
}
-static int check_timecode_rate(void *avcl, AVRational rate, int drop)
+int avpriv_check_timecode_rate(void *avcl, AVRational rate, int drop)
{
int fps;
return -1;
}
fps = (rate.num + rate.den/2) / rate.den;
- if (drop && (rate.den != 1001 || fps != 30)) {
+ if (drop && fps != 30) {
av_log(avcl, AV_LOG_ERROR, "Drop frame is only allowed with 30000/1001 FPS\n");
return -2;
}
{
int frame_num = tc->start + frame;
int fps = (tc->rate.num + tc->rate.den/2) / tc->rate.den;
- int ff = frame_num % fps;
- int ss = frame_num / fps % 60;
- int mm = frame_num / (fps*60) % 60;
- int hh = frame_num / (fps*3600) % 24;
+ int hh, mm, ss, ff, neg = 0;
if (tc->drop)
- frame_num = ff_framenum_to_drop_timecode(frame_num);
- snprintf(buf, sizeof("hh:mm:ss.ff"), "%02d:%02d:%02d%c%02d",
+ frame_num = avpriv_framenum_to_drop_timecode(frame_num);
+ if (frame_num < 0) {
+ frame_num = -frame_num;
+ neg = 1;
+ }
+ ff = frame_num % fps;
+ ss = frame_num / fps % 60;
+ mm = frame_num / (fps*60) % 60;
+ hh = frame_num / (fps*3600);
+ snprintf(buf, 16, "%s%02d:%02d:%02d%c%02d",
+ neg ? "-" : "",
hh, mm, ss, tc->drop ? ';' : ':', ff);
return buf;
}
-int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc)
+int avpriv_init_smpte_timecode(void *avcl, struct ff_timecode *tc)
{
int hh, mm, ss, ff, fps, ret;
char c;
tc->drop = c != ':'; // drop if ';', '.', ...
- ret = check_timecode_rate(avcl, tc->rate, tc->drop);
+ ret = avpriv_check_timecode_rate(avcl, tc->rate, tc->drop);
if (ret < 0)
return ret;
}
return 0;
}
+
+#if FF_API_OLD_TIMECODE
+int ff_framenum_to_drop_timecode(int frame_num)
+{
+ return avpriv_framenum_to_drop_timecode(frame_num);
+}
+
+uint32_t ff_framenum_to_smtpe_timecode(unsigned frame, int fps, int drop)
+{
+ return avpriv_framenum_to_smpte_timecode(frame, fps, drop);
+}
+
+int ff_init_smtpe_timecode(void *avcl, struct ff_timecode *tc)
+{
+ return avpriv_init_smpte_timecode(avcl, tc);
+}
+#endif