#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
/** Virtual playlist entry.
*/
typedef struct
{
mlt_producer producer;
- mlt_timecode in;
- mlt_timecode playtime;
+ mlt_position frame_in;
+ mlt_position frame_out;
+ mlt_position frame_count;
}
playlist_entry;
// Override the producer get_frame
producer->get_frame = producer_get_frame;
+ // Define the destructor
+ producer->close = ( mlt_destructor )mlt_playlist_close;
+ producer->close_object = this;
+
// Initialise blank
mlt_producer_init( &this->blank, NULL );
+ mlt_properties_set( mlt_producer_properties( &this->blank ), "mlt_service", "blank" );
+ mlt_properties_set( mlt_producer_properties( &this->blank ), "resource", "blank" );
+
+ // Indicate that this producer is a playlist
+ mlt_properties_set_data( mlt_playlist_properties( this ), "playlist", this, 0, NULL, NULL );
+
+ // Specify the eof condition
+ mlt_properties_set( mlt_playlist_properties( this ), "eof", "pause" );
+ mlt_properties_set( mlt_playlist_properties( this ), "resource", "<playlist>" );
+ mlt_properties_set( mlt_playlist_properties( this ), "mlt_type", "mlt_producer" );
+ mlt_properties_set_position( mlt_playlist_properties( this ), "in", 0 );
+ mlt_properties_set_position( mlt_playlist_properties( this ), "out", 0 );
+ mlt_properties_set_position( mlt_playlist_properties( this ), "length", 0 );
+
+ this->size = 10;
+ this->list = malloc( this->size * sizeof( playlist_entry * ) );
}
return this;
mlt_producer mlt_playlist_producer( mlt_playlist this )
{
- return &this->parent;
+ return this != NULL ? &this->parent : NULL;
}
/** Get the service associated to this playlist.
return mlt_producer_properties( &this->parent );
}
-/** Append to the virtual playlist.
+/** Refresh the playlist after a clip has been changed.
*/
-static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer producer, mlt_timecode in, mlt_timecode out )
+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_position frame_count = 0;
- // If fps is 0
- if ( fps == 0 )
- {
- // Inherit it from the producer
- fps = mlt_producer_get_fps( producer );
- }
- else if ( fps != mlt_properties_get_double( mlt_producer_properties( producer ), "fps" ) )
+ for ( i = 0; i < this->count; i ++ )
{
- // Generate a warning for now - the following attempt to fix may fail
- fprintf( stderr, "Warning: fps mismatch on playlist producer %d\n", this->count );
+ // Get the producer
+ mlt_producer producer = this->list[ i ]->producer;
- // It should be safe to impose fps on an image producer, but not necessarily safe for video
- mlt_properties_set_double( mlt_producer_properties( producer ), "fps", fps );
+ // If fps is 0
+ if ( fps == 0 )
+ {
+ // Inherit it from the producer
+ fps = mlt_producer_get_fps( producer );
+ }
+ else if ( fps != mlt_properties_get_double( mlt_producer_properties( producer ), "fps" ) )
+ {
+ // Generate a warning for now - the following attempt to fix may fail
+ fprintf( stderr, "Warning: fps mismatch on playlist producer %d\n", this->count );
+
+ // It should be safe to impose fps on an image producer, but not necessarily safe for video
+ mlt_properties_set_double( mlt_producer_properties( producer ), "fps", fps );
+ }
+
+ // 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_position( mlt_playlist_properties( this ), "length", frame_count );
+ mlt_properties_set_position( mlt_playlist_properties( this ), "out", frame_count - 1 );
+
+ return 0;
+}
+
+/** Append to the virtual playlist.
+*/
+
+static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer producer, mlt_position in, mlt_position out )
+{
// Check that we have room
if ( this->count >= this->size )
{
int i;
this->list = realloc( this->list, ( this->size + 10 ) * sizeof( playlist_entry * ) );
- for ( i = this->size; i < this->size + 10; i ++ )
- this->list[ i ] = NULL;
+ for ( i = this->size; i < this->size + 10; i ++ ) this->list[ i ] = NULL;
this->size += 10;
}
this->list[ this->count ] = calloc( sizeof( playlist_entry ), 1 );
this->list[ this->count ]->producer = producer;
- this->list[ this->count ]->in = in;
- this->list[ this->count ]->playtime = out - in;
+ this->list[ this->count ]->frame_in = in;
+ this->list[ this->count ]->frame_out = out;
+ this->list[ this->count ]->frame_count = out - in + 1;
+
+ mlt_properties_set( mlt_producer_properties( producer ), "eof", "pause" );
+
+ mlt_producer_set_speed( producer, 0 );
this->count ++;
- mlt_properties_set_double( mlt_playlist_properties( this ), "first_fps", fps );
- mlt_properties_set_double( mlt_playlist_properties( this ), "fps", fps );
+ mlt_properties_inc_ref( mlt_producer_properties( producer ) );
- return 0;
+ return mlt_playlist_virtual_refresh( this );
}
/** Seek in the virtual playlist.
*/
-static mlt_producer mlt_playlist_virtual_seek( mlt_playlist this )
+static mlt_service mlt_playlist_virtual_seek( mlt_playlist this )
+{
+ // Default producer to blank
+ mlt_producer producer = NULL;
+
+ // Map playlist position to real producer in virtual playlist
+ mlt_position position = mlt_producer_frame( &this->parent );
+
+ mlt_position original = position;
+
+ // 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" );
+
+ // 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
+ producer = this->list[ i ]->producer;
+ break;
+ }
+ else
+ {
+ // Decrement position by length of this entry
+ position -= this->list[ i ]->frame_count;
+ }
+ }
+
+ // Seek in real producer to relative position
+ if ( producer != NULL )
+ {
+ position += this->list[ i ]->frame_in;
+ 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( this_producer, original - 1 );
+ producer = entry->producer;
+ 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( this_producer, 0 );
+ producer = entry->producer;
+ mlt_producer_seek( producer, entry->frame_in );
+ }
+ else
+ {
+ producer = &this->blank;
+ }
+
+ return mlt_producer_service( 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 position = mlt_producer_position( &this->parent );
+ mlt_position position = mlt_producer_frame( &this->parent );
// Loop through the virtual playlist
int i = 0;
for ( i = 0; i < this->count; i ++ )
{
- if ( position < this->list[ i ]->playtime )
+ if ( position < this->list[ i ]->frame_count )
{
// Found it, now break
producer = this->list[ i ]->producer;
- position += this->list[ i ]->in;
break;
}
else
{
// Decrement position by length of this entry
- position -= this->list[ i ]->playtime;
+ position -= this->list[ i ]->frame_count;
}
}
// Seek in real producer to relative position
- mlt_producer_seek( producer, position );
+ if ( i < this->count )
+ {
+ // 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 );
+ }
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_position position = mlt_producer_frame( &this->parent );
+
+ // Loop through the virtual playlist
+ int i = 0;
+
+ for ( i = 0; i < this->count; i ++ )
+ {
+ if ( position < this->list[ i ]->frame_count )
+ {
+ // Found it, now break
+ break;
+ }
+ else
+ {
+ // Decrement position by length of this entry
+ position -= this->list[ i ]->frame_count;
+ }
+ }
+
+ return i;
+}
+
+/** Obtain the current clips producer.
+*/
+
+mlt_producer mlt_playlist_current( mlt_playlist this )
+{
+ int i = mlt_playlist_current_clip( this );
+ if ( i < this->count )
+ return this->list[ i ]->producer;
+ else
+ return &this->blank;
+}
+
+/** Get the position which corresponds to the start of the next clip.
+*/
+
+mlt_position mlt_playlist_clip( mlt_playlist this, mlt_whence whence, int index )
+{
+ mlt_position position = 0;
+ int absolute_clip = index;
+ int i = 0;
+
+ // Determine the absolute clip
+ switch ( whence )
+ {
+ case mlt_whence_relative_start:
+ absolute_clip = index;
+ break;
+
+ case mlt_whence_relative_current:
+ absolute_clip = mlt_playlist_current_clip( this ) + index;
+ break;
+
+ case mlt_whence_relative_end:
+ absolute_clip = this->count - index;
+ break;
+ }
+
+ // Check that we're in a valid range
+ if ( absolute_clip < 0 )
+ absolute_clip = 0;
+ else if ( absolute_clip > this->count )
+ absolute_clip = this->count;
+
+ // Now determine the position
+ for ( i = 0; i < absolute_clip; i ++ )
+ position += this->list[ i ]->frame_count;
+
+ 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;
+ memset( info, 0, sizeof( mlt_playlist_clip_info ) );
+ if ( !error )
+ {
+ 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" );
+ info->frame_in = this->list[ index ]->frame_in;
+ info->frame_out = this->list[ index ]->frame_out;
+ info->frame_count = this->list[ index ]->frame_count;
+ info->length = mlt_producer_get_length( producer );
+ info->fps = mlt_producer_get_fps( producer );
+ }
+
+ // Determine the consuming filter service
+ if ( info->producer != NULL )
+ {
+ info->service = mlt_producer_service( info->producer );
+ while ( mlt_service_consumer( info->service ) != NULL )
+ info->service = mlt_service_consumer( info->service );
+ }
+
+ return error;
+}
+
+/** Get number of clips in the playlist.
+*/
+
+int mlt_playlist_count( mlt_playlist this )
+{
+ return this->count;
+}
+
+/** Clear the playlist.
+*/
+
+int mlt_playlist_clear( mlt_playlist this )
+{
+ int i;
+ for ( i = 0; i < this->count; i ++ )
+ mlt_producer_close( this->list[ i ]->producer );
+ this->count = 0;
+ mlt_properties_set_double( mlt_playlist_properties( this ), "first_fps", 0 );
+ return mlt_playlist_virtual_refresh( this );
+}
+
/** Append a producer to the playlist.
*/
int mlt_playlist_append( mlt_playlist this, mlt_producer producer )
{
// Append to virtual list
- return mlt_playlist_virtual_append( this, producer, 0, mlt_producer_get_playtime( producer ) );
+ 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, mlt_position in, mlt_position out )
+{
+ // Append to virtual list
+ if ( in != -1 && out != -1 )
+ 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
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_position in, mlt_position out )
+{
+ // 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 );
+
+ // Close the producer associated to the clip info
+ mlt_producer_close( where_info.producer );
+
+ // 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;
+}
+
+/** 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, ¤t_info, current );
+ position -= current_info.start;
+
+ if ( current == src )
+ current = dest;
+ else if ( current > src && current < dest )
+ current ++;
+ else if ( current == dest )
+ current = src;
+
+ src_entry = this->list[ src ];
+ if ( src > dest )
+ {
+ for ( i = src; i > dest; i -- )
+ this->list[ i ] = this->list[ i - 1 ];
+ }
+ else
+ {
+ for ( i = src; i < dest; i ++ )
+ this->list[ i ] = this->list[ i + 1 ];
+ }
+ this->list[ dest ] = src_entry;
+
+ mlt_playlist_get_clip_info( this, ¤t_info, current );
+ mlt_producer_seek( mlt_playlist_producer( this ), current_info.start + position );
+ }
+
+ return 0;
+}
+
+/** 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 )
+ {
+ playlist_entry *entry = this->list[ clip ];
+ mlt_producer producer = entry->producer;
+
+ if ( in <= -1 )
+ in = 0;
+ if ( out <= -1 || out >= mlt_producer_get_playtime( producer ) )
+ out = mlt_producer_get_playtime( producer ) - 1;
+
+ if ( out < in )
+ {
+ mlt_position t = in;
+ in = out;
+ out = t;
+ }
+
+ entry->frame_in = in;
+ entry->frame_out = out;
+ entry->frame_count = out - in + 1;
+ mlt_playlist_virtual_refresh( this );
+ }
+ return error;
+}
+
+/** Split a clip on the playlist at the given position.
+*/
+
+int mlt_playlist_split( mlt_playlist this, int clip, mlt_position position )
+{
+ int error = clip < 0 || clip >= this->count;
+ if ( error == 0 )
+ {
+ playlist_entry *entry = this->list[ clip ];
+ if ( position > 0 && position < entry->frame_count )
+ {
+ int in = entry->frame_in;
+ int out = entry->frame_out;
+ mlt_playlist_resize_clip( this, clip, in, in + position );
+ mlt_playlist_insert( this, entry->producer, clip + 1, in + position + 1, out );
+ }
+ else
+ {
+ error = 1;
+ }
+ }
+ return error;
+}
+
+/** Join 1 or more consecutive clips.
+*/
+
+int mlt_playlist_join( mlt_playlist this, int clip, int count, int merge )
+{
+ int error = clip < 0 || ( clip + 1 ) >= this->count;
+ if ( error == 0 )
+ {
+ int i = clip;
+ mlt_playlist new_clip = mlt_playlist_init( );
+ if ( clip + count >= this->count )
+ count = this->count - clip;
+ for ( i = 0; i <= count; i ++ )
+ {
+ playlist_entry *entry = this->list[ clip ];
+ mlt_playlist_append_io( new_clip, entry->producer, entry->frame_in, entry->frame_out );
+ mlt_playlist_remove( this, clip );
+ }
+ mlt_playlist_insert( this, mlt_playlist_producer( new_clip ), clip, 0, -1 );
+ mlt_playlist_close( new_clip );
+ }
+ return error;
+}
+
/** Get the current frame.
*/
mlt_playlist this = producer->child;
// Get the real producer
- mlt_producer real = mlt_playlist_virtual_seek( this );
+ mlt_service real = mlt_playlist_virtual_seek( this );
// Get the frame
- mlt_service_get_frame( mlt_producer_service( real ), frame, index );
+ mlt_service_get_frame( real, frame, index );
- // Update timecode on the frame we're creating
- mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
+ // Check if we're at the end of the clip
+ mlt_properties properties = mlt_frame_properties( *frame );
+ if ( mlt_properties_get_int( properties, "end_of_clip" ) )
+ mlt_playlist_virtual_set_out( this );
+
+ // Check for notifier and call with appropriate argument
+ mlt_properties playlist_properties = mlt_producer_properties( producer );
+ void ( *notifier )( void * ) = mlt_properties_get_data( playlist_properties, "notifier", NULL );
+ if ( notifier != NULL )
+ {
+ void *argument = mlt_properties_get_data( playlist_properties, "notifier_arg", NULL );
+ notifier( argument );
+ }
+
+ // 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 );
void mlt_playlist_close( mlt_playlist this )
{
- mlt_producer_close( &this->parent );
- mlt_producer_close( &this->blank );
- free( this );
+ if ( this != NULL && mlt_properties_dec_ref( mlt_playlist_properties( this ) ) <= 0 )
+ {
+ int i = 0;
+ this->parent.close = NULL;
+ mlt_producer_close( &this->parent );
+ mlt_producer_close( &this->blank );
+ for ( i = 0; i < this->count; i ++ )
+ {
+ mlt_producer_close( this->list[ i ]->producer );
+ free( this->list[ i ] );
+ }
+ free( this->list );
+ free( this );
+ }
}
projects / melted / blobdiff