default mix to 0.5
[melted] / src / framework / mlt_playlist.c
index 519585c..8bdbe4b 100644 (file)
 typedef struct
 {
        mlt_producer producer;
-       int64_t frame_in;
-       int64_t frame_out;
-       int64_t frame_count;
-       mlt_timecode playtime;
+       mlt_position frame_in;
+       mlt_position frame_out;
+       mlt_position frame_count;
 }
 playlist_entry;
 
@@ -82,6 +81,7 @@ mlt_playlist mlt_playlist_init( )
 
                // Specify the eof condition
                mlt_properties_set( mlt_playlist_properties( this ), "eof", "pause" );
+               mlt_properties_set( mlt_playlist_properties( this ), "resource", "<playlist>" );
        }
        
        return this;
@@ -111,13 +111,16 @@ mlt_properties mlt_playlist_properties( mlt_playlist this )
        return mlt_producer_properties( &this->parent );
 }
 
+/** Refresh the playlist after a clip has been changed.
+*/
+
 static int mlt_playlist_virtual_refresh( mlt_playlist this )
 {
        int i = 0;
 
        // Get the fps of the first producer
        double fps = mlt_properties_get_double( mlt_playlist_properties( this ), "first_fps" );
-       mlt_timecode playtime = 0;
+       mlt_position frame_count = 0;
 
        for ( i = 0; i < this->count; i ++ )
        {
@@ -139,15 +142,15 @@ static int mlt_playlist_virtual_refresh( mlt_playlist this )
                        mlt_properties_set_double( mlt_producer_properties( producer ), "fps", fps );
                }
 
-               // Update the playtime for this clip
-               playtime += this->list[ i ]->playtime;
+               // Update the frame_count for this clip
+               frame_count += this->list[ i ]->frame_count;
        }
 
        // Refresh all properties
        mlt_properties_set_double( mlt_playlist_properties( this ), "first_fps", fps );
        mlt_properties_set_double( mlt_playlist_properties( this ), "fps", fps == 0 ? 25 : fps );
-       mlt_properties_set_timecode( mlt_playlist_properties( this ), "length", playtime );
-       mlt_properties_set_timecode( mlt_playlist_properties( this ), "out", playtime );
+       mlt_properties_set_position( mlt_playlist_properties( this ), "length", frame_count );
+       mlt_properties_set_position( mlt_playlist_properties( this ), "out", frame_count - 1 );
 
        return 0;
 }
@@ -155,11 +158,8 @@ static int mlt_playlist_virtual_refresh( mlt_playlist this )
 /** Append to the virtual playlist.
 */
 
-static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer producer, int64_t in, int64_t out )
+static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer producer, mlt_position in, mlt_position out )
 {
-       double fps = mlt_properties_get_double( mlt_playlist_properties( this ), "fps" );
-       double playtime = ( double )( out - in + 1 ) / fps;
-
        // Check that we have room
        if ( this->count >= this->size )
        {
@@ -175,7 +175,8 @@ static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer producer
        this->list[ this->count ]->frame_in = in;
        this->list[ this->count ]->frame_out = out;
        this->list[ this->count ]->frame_count = out - in + 1;
-       this->list[ this->count ]->playtime = playtime;
+
+       mlt_properties_set( mlt_producer_properties( producer ), "eof", "continue" );
 
        mlt_producer_set_speed( producer, 0 );
 
@@ -193,21 +194,27 @@ static mlt_producer mlt_playlist_virtual_seek( mlt_playlist this )
        mlt_producer producer = NULL;
 
        // Map playlist position to real producer in virtual playlist
-       mlt_timecode pos = mlt_producer_position( &this->parent );
-       int64_t position = mlt_producer_frame_position( &this->parent, pos );
+       mlt_position position = mlt_producer_frame( &this->parent );
+
+       // Total number of frames
        int64_t total = 0;
 
+       // Get the properties
        mlt_properties properties = mlt_playlist_properties( this );
+
+       // Get the eof handling
        char *eof = mlt_properties_get( properties, "eof" );
 
-       // Loop through the virtual playlist
+       // Index for the main loop
        int i = 0;
 
+       // Loop for each producer until found
        for ( i = 0; i < this->count; i ++ )
        {
                // Increment the total
                total += this->list[ i ]->frame_count;
 
+               // Check if the position indicates that we have found the clip
                if ( position < this->list[ i ]->frame_count )
                {
                        // Found it, now break
@@ -225,47 +232,43 @@ static mlt_producer mlt_playlist_virtual_seek( mlt_playlist this )
        if ( producer != NULL )
        {
                position += this->list[ i ]->frame_in;
-               position += mlt_producer_frame_position( producer, mlt_producer_get_in( producer ) );
-               mlt_producer_seek_frame( producer, position );
+               mlt_producer_seek( producer, position );
        }
        else if ( !strcmp( eof, "pause" ) && total > 0 )
        {
                playlist_entry *entry = this->list[ this->count - 1 ];
                mlt_producer this_producer = mlt_playlist_producer( this );
-               mlt_producer_seek_frame( this_producer, total - 1 );
+               mlt_producer_seek( this_producer, total - 1 - mlt_producer_get_in( this_producer ) );
                producer = entry->producer;
-               position = mlt_producer_frame_position( producer, mlt_producer_get_in( producer ) );
-               mlt_producer_seek_frame( producer, position + entry->frame_out );
+               mlt_producer_seek( producer, entry->frame_out );
                mlt_producer_set_speed( this_producer, 0 );
-               mlt_producer_set_speed( producer, 0 );
        }
        else if ( !strcmp( eof, "loop" ) && total > 0 )
        {
                playlist_entry *entry = this->list[ 0 ];
                mlt_producer this_producer = mlt_playlist_producer( this );
-               mlt_producer_seek_frame( this_producer, 0 );
+               mlt_producer_seek( this_producer, 0 );
                producer = entry->producer;
-               position = entry->frame_in;
-               position += mlt_producer_frame_position( producer, mlt_producer_get_in( producer ) );
-               mlt_producer_seek_frame( producer, position );
+               mlt_producer_seek( producer, entry->frame_in );
        }
        else
        {
-               mlt_producer_seek( mlt_playlist_producer( this ), 0 );
                producer = &this->blank;
        }
 
        return producer;
 }
 
+/** Invoked when a producer indicates that it has prematurely reached its end.
+*/
+
 static mlt_producer mlt_playlist_virtual_set_out( mlt_playlist this )
 {
        // Default producer to blank
        mlt_producer producer = &this->blank;
 
        // Map playlist position to real producer in virtual playlist
-       mlt_timecode pos = mlt_producer_position( &this->parent );
-       int64_t position = mlt_producer_frame_position( &this->parent, pos );
+       mlt_position position = mlt_producer_frame( &this->parent );
 
        // Loop through the virtual playlist
        int i = 0;
@@ -288,9 +291,9 @@ static mlt_producer mlt_playlist_virtual_set_out( mlt_playlist this )
        // Seek in real producer to relative position
        if ( i < this->count )
        {
-               // Update the playtime for the changed clip (hmmm)
-               this->list[ i ]->frame_count = position + 1;
-               this->list[ i ]->frame_out = position - this->list[ i ]->frame_in;
+               // Update the frame_count for the changed clip (hmmm)
+               this->list[ i ]->frame_out = position;
+               this->list[ i ]->frame_count = this->list[ i ]->frame_out - this->list[ i ]->frame_in + 1;
 
                // Refresh the playlist
                mlt_playlist_virtual_refresh( this );
@@ -299,11 +302,13 @@ static mlt_producer mlt_playlist_virtual_set_out( mlt_playlist this )
        return producer;
 }
 
+/** Obtain the current clips index.
+*/
+
 int mlt_playlist_current_clip( mlt_playlist this )
 {
        // Map playlist position to real producer in virtual playlist
-       mlt_timecode pos = mlt_producer_position( &this->parent );
-       int64_t position = mlt_producer_frame_position( &this->parent, pos );
+       mlt_position position = mlt_producer_frame( &this->parent );
 
        // Loop through the virtual playlist
        int i = 0;
@@ -325,6 +330,9 @@ int mlt_playlist_current_clip( mlt_playlist this )
        return i;
 }
 
+/** Obtain the current clips producer.
+*/
+
 mlt_producer mlt_playlist_current( mlt_playlist this )
 {
        int i = mlt_playlist_current_clip( this );
@@ -334,10 +342,10 @@ mlt_producer mlt_playlist_current( mlt_playlist this )
                return &this->blank;
 }
 
-/** Get the timecode which corresponds to the start of the next clip.
+/** Get the position which corresponds to the start of the next clip.
 */
 
-mlt_timecode mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index )
+mlt_position mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index )
 {
        int64_t position = 0;
        int absolute_clip = index;
@@ -365,11 +373,11 @@ mlt_timecode mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index
        else if ( absolute_clip > this->count )
                absolute_clip = this->count;
 
-       // Now determine the timecode
+       // Now determine the position
        for ( i = 0; i < absolute_clip; i ++ )
                position += this->list[ i ]->frame_count;
 
-       return mlt_producer_time( &this->parent, position );
+       return position;
 }
 
 int mlt_playlist_get_clip_info( mlt_playlist this, mlt_playlist_clip_info *info, int index )
@@ -384,10 +392,8 @@ int mlt_playlist_get_clip_info( mlt_playlist this, mlt_playlist_clip_info *info,
                info->start = mlt_playlist_clip( this, mlt_whence_relative_start, index );
                info->resource = mlt_properties_get( properties, "resource" );
                info->frame_in = this->list[ index ]->frame_in;
-               info->in = mlt_producer_time( producer, info->frame_in );
                info->frame_out = this->list[ index ]->frame_out;
-               info->out = mlt_producer_time( producer, info->frame_out );
-               info->playtime = this->list[ index ]->playtime;
+               info->frame_count = this->list[ index ]->frame_count;
                info->length = mlt_producer_get_length( producer );
                info->fps = mlt_producer_get_fps( producer );
        }
@@ -418,43 +424,34 @@ int mlt_playlist_clear( mlt_playlist this )
 int mlt_playlist_append( mlt_playlist this, mlt_producer producer )
 {
        // Append to virtual list
-       int64_t in = mlt_producer_frame_position( producer, mlt_producer_get_in( producer ) );
-       int64_t out = mlt_producer_frame_position( producer, mlt_producer_get_out( producer ) );
-       return mlt_playlist_virtual_append( this, producer, 0, out - in );
+       return mlt_playlist_virtual_append( this, producer, 0, mlt_producer_get_playtime( producer ) - 1 );
 }
 
 /** Append a producer to the playlist with in/out points.
 */
 
-int mlt_playlist_append_io( mlt_playlist this, mlt_producer producer, double in, double out )
+int mlt_playlist_append_io( mlt_playlist this, mlt_producer producer, mlt_position in, mlt_position out )
 {
        // Append to virtual list
        if ( in != -1 && out != -1 )
-       {
-               int64_t fin = mlt_producer_frame_position( producer, in );
-               int64_t fout = mlt_producer_frame_position( producer, out );
-               return mlt_playlist_virtual_append( this, producer, fin, fout );
-       }
+               return mlt_playlist_virtual_append( this, producer, in, out );
        else
-       {
                return mlt_playlist_append( this, producer );
-       }
 }
 
 /** Append a blank to the playlist of a given length.
 */
 
-int mlt_playlist_blank( mlt_playlist this, mlt_timecode length )
+int mlt_playlist_blank( mlt_playlist this, mlt_position length )
 {
        // Append to the virtual list
-       int64_t fout = mlt_producer_frame_position( &this->blank, length );
-       return mlt_playlist_virtual_append( this, &this->blank, 0, fout );
+       return mlt_playlist_virtual_append( this, &this->blank, 0, length );
 }
 
 /** Insert a producer into the playlist.
 */
 
-int mlt_playlist_insert( mlt_playlist this, mlt_producer producer, int where, mlt_timecode in, mlt_timecode out )
+int mlt_playlist_insert( mlt_playlist this, mlt_producer producer, int where, mlt_position in, mlt_position out )
 {
        return 0;
 }
@@ -469,7 +466,10 @@ int mlt_playlist_move( mlt_playlist this, int from, int to )
        return 0;
 }
 
-int mlt_playlist_resize_clip( mlt_playlist this, int clip, mlt_timecode in, mlt_timecode out )
+/** Resize the current clip.
+*/
+
+int mlt_playlist_resize_clip( mlt_playlist this, int clip, mlt_position in, mlt_position out )
 {
        int error = clip < 0 || clip >= this->count;
        if ( error == 0 )
@@ -479,23 +479,19 @@ int mlt_playlist_resize_clip( mlt_playlist this, int clip, mlt_timecode in, mlt_
 
                if ( in <= -1 )
                        in = 0;
-               if ( out <= -1 || out >= mlt_producer_get_out( producer ) )
-                       out = mlt_producer_get_out( producer );
+               if ( out <= -1 || out >= mlt_producer_get_playtime( producer ) )
+                       out = mlt_producer_get_playtime( producer ) - 1;
 
                if ( out < in )
                {
-                       mlt_timecode t = in;
+                       mlt_position t = in;
                        in = out;
                        out = t;
                }
 
-               int64_t fin = mlt_producer_frame_position( producer, in );
-               int64_t fout = mlt_producer_frame_position( producer, out );
-
-               entry->frame_in = fin;
-               entry->frame_out = fout;
-               entry->frame_count = fout - fin + 1;
-               entry->playtime = out - in;
+               entry->frame_in = in;
+               entry->frame_out = out;
+               entry->frame_count = out - in + 1;
                mlt_playlist_virtual_refresh( this );
        }
        return error;
@@ -529,8 +525,8 @@ static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int i
                notifier( argument );
        }
 
-       // Update timecode on the frame we're creating
-       mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
+       // Update position on the frame we're creating
+       mlt_frame_set_position( *frame, mlt_producer_frame( producer ) );
 
        // Position ourselves on the next frame
        mlt_producer_prepare_next( producer );