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