insert/move/remove dvcp operations

[melted] / src / framework / mlt_playlist.c

diff --git a/src/framework/mlt_playlist.c b/src/framework/mlt_playlist.c
index 8bdbe4b..bf1103d 100644 (file)
--- a/src/framework/mlt_playlist.c
+++ b/src/framework/mlt_playlist.c
@@ -347,7 +347,7 @@ mlt_producer mlt_playlist_current( mlt_playlist this )
 
 mlt_position mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index )
 {
-       int64_t position = 0;
+       mlt_position position = 0;
        int absolute_clip = index;
        int i = 0;
 
@@ -380,6 +380,9 @@ mlt_position mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index
        return position;
 }
 
+/** Get all the info about the clip specified.
+*/
+
 int mlt_playlist_get_clip_info( mlt_playlist this, mlt_playlist_clip_info *info, int index )
 {
        int error = index < 0 || index >= this->count;
@@ -388,6 +391,7 @@ int mlt_playlist_get_clip_info( mlt_playlist this, mlt_playlist_clip_info *info,
        {
                mlt_producer producer = this->list[ index ]->producer;
                mlt_properties properties = mlt_producer_properties( producer );
+               info->clip = index;
                info->producer = producer;
                info->start = mlt_playlist_clip( this, mlt_whence_relative_start, index );
                info->resource = mlt_properties_get( properties, "resource" );
@@ -453,16 +457,111 @@ int mlt_playlist_blank( mlt_playlist this, mlt_position length )
 
 int mlt_playlist_insert( mlt_playlist this, mlt_producer producer, int where, mlt_position in, mlt_position out )
 {
-       return 0;
+       // Append to end
+       mlt_playlist_append_io( this, producer, in, out );
+
+       // Move to the position specified
+       return mlt_playlist_move( this, this->count - 1, where );
 }
 
+/** Remove an entry in the playlist.
+*/
+
 int mlt_playlist_remove( mlt_playlist this, int where )
 {
+       if ( this->count > 0 )
+       {
+               // We need to know the current clip and the position within the playlist
+               int current = mlt_playlist_current_clip( this );
+               mlt_position position = mlt_producer_position( mlt_playlist_producer( this ) );
+
+               // We need all the details about the clip we're removing
+               mlt_playlist_clip_info where_info;
+
+               // Loop variable
+               int i = 0;
+
+               // Make sure the clip to be removed is valid and correct if necessary
+               if ( where < 0 ) 
+                       where = 0;
+               if ( where >= this->count )
+                       where = this->count - 1;
+
+               // Get the clip info of the clip to be removed
+               mlt_playlist_get_clip_info( this, &where_info, where );
+
+               // Reorganise the list
+               for ( i = where + 1; i < this->count; i ++ )
+                       this->list[ i - 1 ] = this->list[ i ];
+               this->count --;
+
+               // Correct position
+               if ( where == current )
+                       mlt_producer_seek( mlt_playlist_producer( this ), where_info.start );
+               else if ( where < current && this->count > 0 )
+                       mlt_producer_seek( mlt_playlist_producer( this ), position - where_info.frame_count );
+               else if ( this->count == 0 )
+                       mlt_producer_seek( mlt_playlist_producer( this ), 0 );
+       }
+
        return 0;
 }
 
-int mlt_playlist_move( mlt_playlist this, int from, int to )
+/** Move an entry in the playlist.
+*/
+
+int mlt_playlist_move( mlt_playlist this, int src, int dest )
 {
+       int i;
+
+       /* We need to ensure that the requested indexes are valid and correct it as necessary */
+       if ( src < 0 ) 
+               src = 0;
+       if ( src >= this->count )
+               src = this->count - 1;
+
+       if ( dest < 0 ) 
+               dest = 0;
+       if ( dest >= this->count )
+               dest = this->count - 1;
+       
+       if ( src != dest && this->count > 1 )
+       {
+               int current = mlt_playlist_current_clip( this );
+               mlt_position position = mlt_producer_position( mlt_playlist_producer( this ) );
+               playlist_entry *src_entry = NULL;
+
+               // We need all the details about the current clip
+               mlt_playlist_clip_info current_info;
+
+               mlt_playlist_get_clip_info( this, &current_info, current );
+               position -= current_info.start;
+
+               if ( current == src )
+                       current = dest;
+               else if ( current > src && current < dest )
+                       current ++;
+               else if ( current == dest )
+                       current = src;
+
+               if ( src > dest )
+               {
+                       int t = dest;
+                       dest = src;
+                       src = t;
+               }
+               
+               src_entry = this->list[ src ];
+
+               for ( i = src + 1; i <= dest; i ++ )
+                       this->list[ i - 1 ] = this->list[ i ];
+
+               this->list[ dest ] = src_entry;
+
+               mlt_playlist_get_clip_info( this, &current_info, current );
+               mlt_producer_seek( mlt_playlist_producer( this ), current_info.start + position );
+       }
+
        return 0;
 }