timecode: support >24h timecode.

[ffmpeg] / libavcodec / timecode.h

diff --git a/libavcodec/timecode.h b/libavcodec/timecode.h
index 3f3c17e612e1ada0b62bc63783a9bd7c0b3da83c..ee03fdab7f77e104293a9caf6747ac0e4cf96660 100644 (file)
--- a/libavcodec/timecode.h
+++ b/libavcodec/timecode.h
@@ -67,11 +67,20 @@ uint32_t avpriv_framenum_to_smpte_timecode(unsigned frame, int fps, int drop);
  * @param tc    Timecode struct pointer
  * @param frame Frame id (timecode frame is computed with tc->start+frame)
  * @return a pointer to the buf parameter
- * @note  buf must have enough space to store the timecode representation
- *        (sizeof("hh:mm:ss.ff"))
+ * @note  timecode representation can be a negative timecode and have
+ *        more than 24 hours.
+ * @note  buf must have enough space to store the timecode representation: 16
+ *        bytes is the minimum required size.
  */
 char *avpriv_timecode_to_string(char *buf, const struct ff_timecode *tc, unsigned frame);
 
+/**
+ * Check if timecode rate is valid and consistent with the drop flag.
+ *
+ * @return 0 on success, negative value on failure
+ */
+int avpriv_check_timecode_rate(void *avcl, AVRational rate, int drop);
+
 /**
  * Parse SMTPE 12M time representation (hh:mm:ss[:;.]ff). str and rate fields
  * from tc struct must be set.