split_at method added

[melted] / src / framework / mlt_playlist.c

diff --git a/src/framework/mlt_playlist.c b/src/framework/mlt_playlist.c
index 22cd256..a78ad6d 100644 (file)
--- a/src/framework/mlt_playlist.c
+++ b/src/framework/mlt_playlist.c
@@ -800,7 +800,7 @@ int mlt_playlist_split( mlt_playlist this, int clip, mlt_position position )
        {
                playlist_entry *entry = this->list[ clip ];
                position = position < 0 ? entry->frame_count + position - 1 : position;
-               if ( position >= 0 && position <= entry->frame_count )
+               if ( position >= 0 && position < entry->frame_count - 1 )
                {
                        int in = entry->frame_in;
                        int out = entry->frame_out;
@@ -836,6 +836,37 @@ int mlt_playlist_split( mlt_playlist this, int clip, mlt_position position )
        return error;
 }
 
+/** Split the playlist at the absolute position.
+*/
+
+int mlt_playlist_split_at( mlt_playlist this, mlt_position position, int left )
+{
+       int result = this == NULL ? -1 : 0;
+       if ( !result )
+       {
+               if ( position >= 0 && position < mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) ) )
+               {
+                       int clip = mlt_playlist_get_clip_index_at( this, position );
+                       mlt_playlist_clip_info info;
+                       mlt_playlist_get_clip_info( this, &info, clip );
+                       if ( left && position != info.start )
+                               mlt_playlist_split( this, clip, position - info.start - 1 );
+                       else if ( !left )
+                               mlt_playlist_split( this, clip, position - info.start );
+                       result = position;
+               }
+               else if ( position <= 0 )
+               {
+                       result = 0;
+               }
+               else
+               {
+                       result = mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
+               }
+       }
+       return result;
+}
+
 /** Join 1 or more consecutive clips.
 */
 
@@ -1188,7 +1219,7 @@ mlt_producer mlt_playlist_replace_with_blank( mlt_playlist this, int clip )
 
 void mlt_playlist_insert_blank( mlt_playlist this, int clip, int length )
 {
-       if ( this != NULL && length > 0 )
+       if ( this != NULL && length >= 0 )
        {
                mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
                mlt_events_block( properties, properties );
@@ -1240,7 +1271,7 @@ int mlt_playlist_insert_at( mlt_playlist this, int position, mlt_producer produc
                if ( clip < this->count && mlt_playlist_is_blank( this, clip ) )
                {
                        // Split and move to new clip if need be
-                       if ( mlt_playlist_split( this, clip, position - info.start ) == 0 )
+                       if ( position != info.start && mlt_playlist_split( this, clip, position - info.start ) == 0 )
                                mlt_playlist_get_clip_info( this, &info, ++ clip );
 
                        // Split again if need be