diff --git a/src/libbluray/bluray.c b/src/libbluray/bluray.c index 1aedf2c..e519650 100644 --- a/src/libbluray/bluray.c +++ b/src/libbluray/bluray.c @@ -1637,6 +1637,39 @@ int64_t bd_seek_time(BLURAY *bd, uint64_t tick) return bd->s_pos; } +int64_t bd_find_seek_point(BLURAY *bd, uint64_t tick) +{ + uint32_t clip_pkt, out_pkt; + NAV_CLIP *clip; + + if (tick >> 33) { + BD_DEBUG(DBG_BLURAY | DBG_CRIT, "bd_find_seek_point(%"PRIu64") failed: invalid timestamp\n", tick); + return bd->s_pos; + } + + tick /= 2; + + bd_mutex_lock(&bd->mutex); + + if (bd->title && + tick < bd->title->duration) { + + // Find the closest access unit to the requested position + clip = nav_time_search(bd->title, (uint32_t)tick, &clip_pkt, &out_pkt); + + bd_mutex_unlock(&bd->mutex); + + return (int64_t)out_pkt * 192; + + } else { + BD_DEBUG(DBG_BLURAY | DBG_CRIT, "bd_find_seek_point(%u) failed\n", (unsigned int)tick); + } + + bd_mutex_unlock(&bd->mutex); + + return bd->s_pos; +} + uint64_t bd_tell_time(BLURAY *bd) { uint32_t clip_pkt = 0, out_pkt = 0, out_time = 0; diff --git a/src/libbluray/bluray.h b/src/libbluray/bluray.h index ae9f412..8ce6ddd 100644 --- a/src/libbluray/bluray.h +++ b/src/libbluray/bluray.h @@ -493,6 +493,16 @@ int64_t bd_seek_time(BLURAY *bd, uint64_t tick); /** * + * Find the byte position to specific time in 90Khz ticks + * + * @param bd BLURAY ojbect + * @param tick tick count + * @return position + */ +int64_t bd_find_seek_point(BLURAY *bd, uint64_t tick); + +/** + * * Seek to a chapter. First chapter is 0 * * @param bd BLURAY object