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kdu_uint32 get_next_track( kdu_uint32 prev_track_idx)
Java: long Get_next_track( long prev_track_idx)
[Declared in "../apps/compressed_io/mj2.h"]
Returns the index of the first track (any kind of track) whose index exceeds prev_track_idx, or 0 if there is none. Since the first valid track index is 1, supplying 0 for the prev_track_idx argument ensures that the first valid track index will be returned. To determine whether the track is a video track or not, you may call access_video_track and see if the returned pointer is NULL or not.