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1501 lines
44 KiB
1501 lines
44 KiB
15 years ago
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/*
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* mlt_playlist.c -- playlist service class
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* Copyright (C) 2003-2004 Ushodaya Enterprises Limited
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* Author: Charles Yates <charles.yates@pandora.be>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "config.h"
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#include "mlt_playlist.h"
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#include "mlt_tractor.h"
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#include "mlt_multitrack.h"
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#include "mlt_field.h"
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#include "mlt_frame.h"
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#include "mlt_transition.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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/** Virtual playlist entry.
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*/
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struct playlist_entry_s
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{
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mlt_producer producer;
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mlt_position frame_in;
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mlt_position frame_out;
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mlt_position frame_count;
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int repeat;
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mlt_position producer_length;
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mlt_event event;
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int preservation_hack;
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};
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/** Forward declarations
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*/
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static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index );
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static int mlt_playlist_unmix( mlt_playlist this, int clip );
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static int mlt_playlist_resize_mix( mlt_playlist this, int clip, int in, int out );
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/** Constructor.
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*/
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mlt_playlist mlt_playlist_init( )
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{
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mlt_playlist this = calloc( sizeof( struct mlt_playlist_s ), 1 );
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if ( this != NULL )
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{
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mlt_producer producer = &this->parent;
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// Construct the producer
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mlt_producer_init( producer, this );
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// Override the producer get_frame
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producer->get_frame = producer_get_frame;
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// Define the destructor
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producer->close = ( mlt_destructor )mlt_playlist_close;
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producer->close_object = this;
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// Initialise blank
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mlt_producer_init( &this->blank, NULL );
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mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank ), "mlt_service", "blank" );
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mlt_properties_set( MLT_PRODUCER_PROPERTIES( &this->blank ), "resource", "blank" );
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// Indicate that this producer is a playlist
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mlt_properties_set_data( MLT_PLAYLIST_PROPERTIES( this ), "playlist", this, 0, NULL, NULL );
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// Specify the eof condition
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mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "eof", "pause" );
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mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "resource", "<playlist>" );
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mlt_properties_set( MLT_PLAYLIST_PROPERTIES( this ), "mlt_type", "mlt_producer" );
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mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "in", 0 );
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mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "out", -1 );
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mlt_properties_set_position( MLT_PLAYLIST_PROPERTIES( this ), "length", 0 );
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this->size = 10;
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this->list = malloc( this->size * sizeof( playlist_entry * ) );
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}
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return this;
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}
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/** Get the producer associated to this playlist.
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*/
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mlt_producer mlt_playlist_producer( mlt_playlist this )
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{
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return this != NULL ? &this->parent : NULL;
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}
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/** Get the service associated to this playlist.
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*/
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mlt_service mlt_playlist_service( mlt_playlist this )
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{
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return MLT_PRODUCER_SERVICE( &this->parent );
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}
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/** Get the propertues associated to this playlist.
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*/
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mlt_properties mlt_playlist_properties( mlt_playlist this )
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{
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return MLT_PRODUCER_PROPERTIES( &this->parent );
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}
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/** Refresh the playlist after a clip has been changed.
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*/
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static int mlt_playlist_virtual_refresh( mlt_playlist this )
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{
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// Obtain the properties
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mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
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int i = 0;
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mlt_position frame_count = 0;
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for ( i = 0; i < this->count; i ++ )
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{
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// Get the producer
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mlt_producer producer = this->list[ i ]->producer;
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int current_length = mlt_producer_get_out( producer ) - mlt_producer_get_in( producer ) + 1;
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// Check if the length of the producer has changed
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if ( this->list[ i ]->frame_in != mlt_producer_get_in( producer ) ||
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this->list[ i ]->frame_out != mlt_producer_get_out( producer ) )
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{
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// This clip should be removed...
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if ( current_length < 1 )
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{
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this->list[ i ]->frame_in = 0;
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this->list[ i ]->frame_out = -1;
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this->list[ i ]->frame_count = 0;
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}
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else
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{
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this->list[ i ]->frame_in = mlt_producer_get_in( producer );
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this->list[ i ]->frame_out = mlt_producer_get_out( producer );
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this->list[ i ]->frame_count = current_length;
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}
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// Update the producer_length
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this->list[ i ]->producer_length = current_length;
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}
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// Calculate the frame_count
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this->list[ i ]->frame_count = ( this->list[ i ]->frame_out - this->list[ i ]->frame_in + 1 ) * this->list[ i ]->repeat;
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// Update the frame_count for this clip
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frame_count += this->list[ i ]->frame_count;
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}
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// Refresh all properties
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mlt_events_block( properties, properties );
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mlt_properties_set_position( properties, "length", frame_count );
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mlt_events_unblock( properties, properties );
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mlt_properties_set_position( properties, "out", frame_count - 1 );
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return 0;
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}
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/** Listener for producers on the playlist.
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*/
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static void mlt_playlist_listener( mlt_producer producer, mlt_playlist this )
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{
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mlt_playlist_virtual_refresh( this );
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}
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/** Append to the virtual playlist.
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*/
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static int mlt_playlist_virtual_append( mlt_playlist this, mlt_producer source, mlt_position in, mlt_position out )
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{
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mlt_producer producer = NULL;
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mlt_properties properties = NULL;
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mlt_properties parent = NULL;
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// If we have a cut, then use the in/out points from the cut
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if ( mlt_producer_is_blank( source ) )
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{
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// Make sure the blank is long enough to accomodate the length specified
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if ( out - in + 1 > mlt_producer_get_length( &this->blank ) )
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{
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mlt_properties blank_props = MLT_PRODUCER_PROPERTIES( &this->blank );
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mlt_events_block( blank_props, blank_props );
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mlt_producer_set_in_and_out( &this->blank, in, out );
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mlt_events_unblock( blank_props, blank_props );
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}
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// Now make sure the cut comes from this this->blank
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if ( source == NULL )
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{
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producer = mlt_producer_cut( &this->blank, in, out );
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}
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else if ( !mlt_producer_is_cut( source ) || mlt_producer_cut_parent( source ) != &this->blank )
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{
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producer = mlt_producer_cut( &this->blank, in, out );
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}
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else
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{
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producer = source;
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mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer ) );
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}
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properties = MLT_PRODUCER_PROPERTIES( producer );
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}
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else if ( mlt_producer_is_cut( source ) )
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{
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producer = source;
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if ( in == -1 )
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in = mlt_producer_get_in( producer );
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if ( out == -1 || out > mlt_producer_get_out( producer ) )
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out = mlt_producer_get_out( producer );
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properties = MLT_PRODUCER_PROPERTIES( producer );
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mlt_properties_inc_ref( properties );
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}
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else
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{
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producer = mlt_producer_cut( source, in, out );
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if ( in == -1 || in < mlt_producer_get_in( producer ) )
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in = mlt_producer_get_in( producer );
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if ( out == -1 || out > mlt_producer_get_out( producer ) )
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out = mlt_producer_get_out( producer );
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properties = MLT_PRODUCER_PROPERTIES( producer );
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}
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// Fetch the cuts parent properties
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parent = MLT_PRODUCER_PROPERTIES( mlt_producer_cut_parent( producer ) );
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// Remove fezzik normalisers for fx cuts
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if ( mlt_properties_get_int( parent, "meta.fx_cut" ) )
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{
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mlt_service service = MLT_PRODUCER_SERVICE( mlt_producer_cut_parent( producer ) );
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mlt_filter filter = mlt_service_filter( service, 0 );
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while ( filter != NULL && mlt_properties_get_int( MLT_FILTER_PROPERTIES( filter ), "_fezzik" ) )
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{
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mlt_service_detach( service, filter );
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filter = mlt_service_filter( service, 0 );
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}
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mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer ), "meta.fx_cut", 1 );
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}
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// Check that we have room
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if ( this->count >= this->size )
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{
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int i;
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this->list = realloc( this->list, ( this->size + 10 ) * sizeof( playlist_entry * ) );
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for ( i = this->size; i < this->size + 10; i ++ ) this->list[ i ] = NULL;
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this->size += 10;
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}
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// Create the entry
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this->list[ this->count ] = calloc( sizeof( playlist_entry ), 1 );
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if ( this->list[ this->count ] != NULL )
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{
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this->list[ this->count ]->producer = producer;
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this->list[ this->count ]->frame_in = in;
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this->list[ this->count ]->frame_out = out;
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this->list[ this->count ]->frame_count = out - in + 1;
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this->list[ this->count ]->repeat = 1;
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this->list[ this->count ]->producer_length = mlt_producer_get_out( producer ) - mlt_producer_get_in( producer ) + 1;
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this->list[ this->count ]->event = mlt_events_listen( parent, this, "producer-changed", ( mlt_listener )mlt_playlist_listener );
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mlt_event_inc_ref( this->list[ this->count ]->event );
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mlt_properties_set( properties, "eof", "pause" );
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mlt_producer_set_speed( producer, 0 );
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this->count ++;
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}
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return mlt_playlist_virtual_refresh( this );
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}
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static mlt_producer mlt_playlist_locate( mlt_playlist this, mlt_position *position, int *clip, int *total )
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{
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// Default producer to NULL
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mlt_producer producer = NULL;
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// Loop for each producer until found
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for ( *clip = 0; *clip < this->count; *clip += 1 )
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{
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// Increment the total
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*total += this->list[ *clip ]->frame_count;
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// Check if the position indicates that we have found the clip
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// Note that 0 length clips get skipped automatically
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if ( *position < this->list[ *clip ]->frame_count )
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{
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// Found it, now break
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producer = this->list[ *clip ]->producer;
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break;
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}
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else
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{
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// Decrement position by length of this entry
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*position -= this->list[ *clip ]->frame_count;
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}
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}
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return producer;
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}
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/** Seek in the virtual playlist.
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*/
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static mlt_service mlt_playlist_virtual_seek( mlt_playlist this, int *progressive )
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{
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// Map playlist position to real producer in virtual playlist
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mlt_position position = mlt_producer_frame( &this->parent );
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// Keep the original position since we change it while iterating through the list
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mlt_position original = position;
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// Clip index and total
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int i = 0;
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int total = 0;
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// Locate the producer for the position
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mlt_producer producer = mlt_playlist_locate( this, &position, &i, &total );
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// Get the properties
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mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
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// Get the eof handling
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char *eof = mlt_properties_get( properties, "eof" );
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// Seek in real producer to relative position
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if ( producer != NULL )
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{
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int count = this->list[ i ]->frame_count / this->list[ i ]->repeat;
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*progressive = count == 1;
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mlt_producer_seek( producer, (int)position % count );
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}
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else if ( !strcmp( eof, "pause" ) && total > 0 )
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{
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playlist_entry *entry = this->list[ this->count - 1 ];
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int count = entry->frame_count / entry->repeat;
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mlt_producer this_producer = MLT_PLAYLIST_PRODUCER( this );
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mlt_producer_seek( this_producer, original - 1 );
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producer = entry->producer;
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mlt_producer_seek( producer, (int)entry->frame_out % count );
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mlt_producer_set_speed( this_producer, 0 );
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mlt_producer_set_speed( producer, 0 );
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*progressive = count == 1;
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}
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else if ( !strcmp( eof, "loop" ) && total > 0 )
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{
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playlist_entry *entry = this->list[ 0 ];
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mlt_producer this_producer = MLT_PLAYLIST_PRODUCER( this );
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mlt_producer_seek( this_producer, 0 );
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producer = entry->producer;
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mlt_producer_seek( producer, 0 );
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}
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else
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{
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producer = &this->blank;
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}
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return MLT_PRODUCER_SERVICE( producer );
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}
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/** Invoked when a producer indicates that it has prematurely reached its end.
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*/
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static mlt_producer mlt_playlist_virtual_set_out( mlt_playlist this )
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{
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// Default producer to blank
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||
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mlt_producer producer = &this->blank;
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// Map playlist position to real producer in virtual playlist
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mlt_position position = mlt_producer_frame( &this->parent );
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// Loop through the virtual playlist
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||
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int i = 0;
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for ( i = 0; i < this->count; i ++ )
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||
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{
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if ( position < this->list[ i ]->frame_count )
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||
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{
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// Found it, now break
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producer = this->list[ i ]->producer;
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break;
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}
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else
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||
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{
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// Decrement position by length of this entry
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position -= this->list[ i ]->frame_count;
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||
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}
|
||
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}
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||
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||
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// Seek in real producer to relative position
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||
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if ( i < this->count && this->list[ i ]->frame_out != position )
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||
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{
|
||
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// 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 = mlt_producer_cut_parent( this->list[ index ]->producer );
|
||
|
mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
|
||
|
info->clip = index;
|
||
|
info->producer = producer;
|
||
|
info->cut = this->list[ index ]->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->repeat = this->list[ index ]->repeat;
|
||
|
info->length = mlt_producer_get_length( producer );
|
||
|
info->fps = mlt_producer_get_fps( producer );
|
||
|
}
|
||
|
|
||
|
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_event_close( this->list[ i ]->event );
|
||
|
mlt_producer_close( this->list[ i ]->producer );
|
||
|
}
|
||
|
this->count = 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 ) - 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_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_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_append_io( this, producer, in, out );
|
||
|
|
||
|
// Move to the position specified
|
||
|
mlt_playlist_move( this, this->count - 1, where );
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
|
||
|
return mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
|
||
|
/** Remove an entry in the playlist.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_remove( mlt_playlist this, int where )
|
||
|
{
|
||
|
int error = where < 0 || where >= this->count;
|
||
|
if ( error == 0 && mlt_playlist_unmix( this, where ) != 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;
|
||
|
playlist_entry *entry = this->list[ where ];
|
||
|
mlt_properties properties = MLT_PRODUCER_PROPERTIES( entry->producer );
|
||
|
|
||
|
// Loop variable
|
||
|
int i = 0;
|
||
|
|
||
|
// Get the clip info
|
||
|
mlt_playlist_get_clip_info( this, &where_info, where );
|
||
|
|
||
|
// 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;
|
||
|
|
||
|
// Reorganise the list
|
||
|
for ( i = where + 1; i < this->count; i ++ )
|
||
|
this->list[ i - 1 ] = this->list[ i ];
|
||
|
this->count --;
|
||
|
|
||
|
if ( entry->preservation_hack == 0 )
|
||
|
{
|
||
|
// Decouple from mix_in/out if necessary
|
||
|
if ( mlt_properties_get_data( properties, "mix_in", NULL ) != NULL )
|
||
|
{
|
||
|
mlt_properties mix = mlt_properties_get_data( properties, "mix_in", NULL );
|
||
|
mlt_properties_set_data( mix, "mix_out", NULL, 0, NULL, NULL );
|
||
|
}
|
||
|
if ( mlt_properties_get_data( properties, "mix_out", NULL ) != NULL )
|
||
|
{
|
||
|
mlt_properties mix = mlt_properties_get_data( properties, "mix_out", NULL );
|
||
|
mlt_properties_set_data( mix, "mix_in", NULL, 0, NULL, NULL );
|
||
|
}
|
||
|
|
||
|
if ( mlt_properties_ref_count( MLT_PRODUCER_PROPERTIES( entry->producer ) ) == 1 )
|
||
|
mlt_producer_clear( entry->producer );
|
||
|
}
|
||
|
|
||
|
// Close the producer associated to the clip info
|
||
|
mlt_event_close( entry->event );
|
||
|
mlt_producer_close( entry->producer );
|
||
|
|
||
|
// 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 );
|
||
|
|
||
|
// Free the entry
|
||
|
free( entry );
|
||
|
|
||
|
// Refresh the playlist
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** 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 );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/** Repeat the specified clip n times.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_repeat_clip( mlt_playlist this, int clip, int repeat )
|
||
|
{
|
||
|
int error = repeat < 1 || clip < 0 || clip >= this->count;
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
playlist_entry *entry = this->list[ clip ];
|
||
|
entry->repeat = repeat;
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** Resize the specified 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 && mlt_playlist_resize_mix( this, clip, in, out ) != 0 )
|
||
|
{
|
||
|
playlist_entry *entry = this->list[ clip ];
|
||
|
mlt_producer producer = entry->producer;
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
|
||
|
mlt_events_block( properties, properties );
|
||
|
|
||
|
if ( mlt_producer_is_blank( producer ) )
|
||
|
{
|
||
|
// Make sure the blank is long enough to accomodate the length specified
|
||
|
if ( out - in + 1 > mlt_producer_get_length( &this->blank ) )
|
||
|
{
|
||
|
mlt_properties blank_props = MLT_PRODUCER_PROPERTIES( &this->blank );
|
||
|
mlt_properties_set_int( blank_props, "length", out - in + 1 );
|
||
|
mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( producer ), "length", out - in + 1 );
|
||
|
mlt_producer_set_in_and_out( &this->blank, 0, out - in );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ( in <= -1 )
|
||
|
in = 0;
|
||
|
if ( out <= -1 || out >= mlt_producer_get_length( producer ) )
|
||
|
out = mlt_producer_get_length( producer ) - 1;
|
||
|
|
||
|
if ( out < in )
|
||
|
{
|
||
|
mlt_position t = in;
|
||
|
in = out;
|
||
|
out = t;
|
||
|
}
|
||
|
|
||
|
mlt_producer_set_in_and_out( producer, in, out );
|
||
|
mlt_events_unblock( properties, properties );
|
||
|
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 ];
|
||
|
position = position < 0 ? entry->frame_count + position - 1 : position;
|
||
|
if ( position >= 0 && position < entry->frame_count - 1 )
|
||
|
{
|
||
|
int in = entry->frame_in;
|
||
|
int out = entry->frame_out;
|
||
|
mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_resize_clip( this, clip, in, in + position );
|
||
|
if ( !mlt_producer_is_blank( entry->producer ) )
|
||
|
{
|
||
|
int i = 0;
|
||
|
mlt_properties entry_properties = MLT_PRODUCER_PROPERTIES( entry->producer );
|
||
|
mlt_producer split = mlt_producer_cut( entry->producer, in + position + 1, out );
|
||
|
mlt_properties split_properties = MLT_PRODUCER_PROPERTIES( split );
|
||
|
mlt_playlist_insert( this, split, clip + 1, 0, -1 );
|
||
|
for ( i = 0; i < mlt_properties_count( entry_properties ); i ++ )
|
||
|
{
|
||
|
char *name = mlt_properties_get_name( entry_properties, i );
|
||
|
if ( name != NULL && !strncmp( name, "meta.", 5 ) )
|
||
|
mlt_properties_set( split_properties, name, mlt_properties_get_value( entry_properties, i ) );
|
||
|
}
|
||
|
mlt_producer_close( split );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_playlist_insert( this, &this->blank, clip + 1, 0, out - position - 1 );
|
||
|
}
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
error = 1;
|
||
|
}
|
||
|
}
|
||
|
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.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_join( mlt_playlist this, int clip, int count, int merge )
|
||
|
{
|
||
|
int error = clip < 0 || clip >= this->count;
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
int i = clip;
|
||
|
mlt_playlist new_clip = mlt_playlist_init( );
|
||
|
mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
if ( clip + count >= this->count )
|
||
|
count = this->count - clip - 1;
|
||
|
for ( i = 0; i <= count; i ++ )
|
||
|
{
|
||
|
playlist_entry *entry = this->list[ clip ];
|
||
|
mlt_playlist_append( new_clip, entry->producer );
|
||
|
mlt_playlist_repeat_clip( new_clip, i, entry->repeat );
|
||
|
entry->preservation_hack = 1;
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
}
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_insert( this, MLT_PLAYLIST_PRODUCER( new_clip ), clip, 0, -1 );
|
||
|
mlt_playlist_close( new_clip );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** Mix consecutive clips for a specified length and apply transition if specified.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_mix( mlt_playlist this, int clip, int length, mlt_transition transition )
|
||
|
{
|
||
|
int error = ( clip < 0 || clip + 1 >= this->count );
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
playlist_entry *clip_a = this->list[ clip ];
|
||
|
playlist_entry *clip_b = this->list[ clip + 1 ];
|
||
|
mlt_producer track_a = NULL;
|
||
|
mlt_producer track_b = NULL;
|
||
|
mlt_tractor tractor = mlt_tractor_new( );
|
||
|
mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
|
||
|
// Check length is valid for both clips and resize if necessary.
|
||
|
int max_size = clip_a->frame_count > clip_b->frame_count ? clip_a->frame_count : clip_b->frame_count;
|
||
|
length = length > max_size ? max_size : length;
|
||
|
|
||
|
// Create the a and b tracks/cuts if necessary - note that no cuts are required if the length matches
|
||
|
if ( length != clip_a->frame_count )
|
||
|
track_a = mlt_producer_cut( clip_a->producer, clip_a->frame_out - length + 1, clip_a->frame_out );
|
||
|
else
|
||
|
track_a = clip_a->producer;
|
||
|
|
||
|
if ( length != clip_b->frame_count )
|
||
|
track_b = mlt_producer_cut( clip_b->producer, clip_b->frame_in, clip_b->frame_in + length - 1 );
|
||
|
else
|
||
|
track_b = clip_b->producer;
|
||
|
|
||
|
// Set the tracks on the tractor
|
||
|
mlt_tractor_set_track( tractor, track_a, 0 );
|
||
|
mlt_tractor_set_track( tractor, track_b, 1 );
|
||
|
|
||
|
// Insert the mix object into the playlist
|
||
|
mlt_playlist_insert( this, MLT_TRACTOR_PRODUCER( tractor ), clip + 1, -1, -1 );
|
||
|
mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mlt_mix", tractor, 0, NULL, NULL );
|
||
|
|
||
|
// Attach the transition
|
||
|
if ( transition != NULL )
|
||
|
{
|
||
|
mlt_field field = mlt_tractor_field( tractor );
|
||
|
mlt_field_plant_transition( field, transition, 0, 1 );
|
||
|
mlt_transition_set_in_and_out( transition, 0, length - 1 );
|
||
|
}
|
||
|
|
||
|
// Close our references to the tracks if we created new cuts above (the tracks can still be used here)
|
||
|
if ( track_a != clip_a->producer )
|
||
|
mlt_producer_close( track_a );
|
||
|
if ( track_b != clip_b->producer )
|
||
|
mlt_producer_close( track_b );
|
||
|
|
||
|
// Check if we have anything left on the right hand clip
|
||
|
if ( track_b == clip_b->producer )
|
||
|
{
|
||
|
clip_b->preservation_hack = 1;
|
||
|
mlt_playlist_remove( this, clip + 2 );
|
||
|
}
|
||
|
else if ( clip_b->frame_out - clip_b->frame_in > length )
|
||
|
{
|
||
|
mlt_playlist_resize_clip( this, clip + 2, clip_b->frame_in + length, clip_b->frame_out );
|
||
|
mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_b->producer ), "mix_in", tractor, 0, NULL, NULL );
|
||
|
mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_out", clip_b->producer, 0, NULL, NULL );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_producer_clear( clip_b->producer );
|
||
|
mlt_playlist_remove( this, clip + 2 );
|
||
|
}
|
||
|
|
||
|
// Check if we have anything left on the left hand clip
|
||
|
if ( track_a == clip_a->producer )
|
||
|
{
|
||
|
clip_a->preservation_hack = 1;
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
}
|
||
|
else if ( clip_a->frame_out - clip_a->frame_in > length )
|
||
|
{
|
||
|
mlt_playlist_resize_clip( this, clip, clip_a->frame_in, clip_a->frame_out - length );
|
||
|
mlt_properties_set_data( MLT_PRODUCER_PROPERTIES( clip_a->producer ), "mix_out", tractor, 0, NULL, NULL );
|
||
|
mlt_properties_set_data( MLT_TRACTOR_PROPERTIES( tractor ), "mix_in", clip_a->producer, 0, NULL, NULL );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_producer_clear( clip_a->producer );
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
}
|
||
|
|
||
|
// Unblock and force a fire off of change events to listeners
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
mlt_tractor_close( tractor );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** Add a transition to an existing mix.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_mix_add( mlt_playlist this, int clip, mlt_transition transition )
|
||
|
{
|
||
|
mlt_producer producer = mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip ) );
|
||
|
mlt_properties properties = producer != NULL ? MLT_PRODUCER_PROPERTIES( producer ) : NULL;
|
||
|
mlt_tractor tractor = properties != NULL ? mlt_properties_get_data( properties, "mlt_mix", NULL ) : NULL;
|
||
|
int error = transition == NULL || tractor == NULL;
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
mlt_field field = mlt_tractor_field( tractor );
|
||
|
mlt_field_plant_transition( field, transition, 0, 1 );
|
||
|
mlt_transition_set_in_and_out( transition, 0, this->list[ clip ]->frame_count - 1 );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** Return the clip at the clip index.
|
||
|
*/
|
||
|
|
||
|
mlt_producer mlt_playlist_get_clip( mlt_playlist this, int clip )
|
||
|
{
|
||
|
if ( clip >= 0 && clip < this->count )
|
||
|
return this->list[ clip ]->producer;
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
/** Return the clip at the specified position.
|
||
|
*/
|
||
|
|
||
|
mlt_producer mlt_playlist_get_clip_at( mlt_playlist this, mlt_position position )
|
||
|
{
|
||
|
int index = 0, total = 0;
|
||
|
return mlt_playlist_locate( this, &position, &index, &total );
|
||
|
}
|
||
|
|
||
|
/** Return the clip index of the specified position.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_get_clip_index_at( mlt_playlist this, mlt_position position )
|
||
|
{
|
||
|
int index = 0, total = 0;
|
||
|
mlt_playlist_locate( this, &position, &index, &total );
|
||
|
return index;
|
||
|
}
|
||
|
|
||
|
/** Determine if the clip is a mix.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_clip_is_mix( mlt_playlist this, int clip )
|
||
|
{
|
||
|
mlt_producer producer = mlt_producer_cut_parent( mlt_playlist_get_clip( this, clip ) );
|
||
|
mlt_properties properties = producer != NULL ? MLT_PRODUCER_PROPERTIES( producer ) : NULL;
|
||
|
mlt_tractor tractor = properties != NULL ? mlt_properties_get_data( properties, "mlt_mix", NULL ) : NULL;
|
||
|
return tractor != NULL;
|
||
|
}
|
||
|
|
||
|
/** Remove a mixed clip - ensure that the cuts included in the mix find their way
|
||
|
back correctly on to the playlist.
|
||
|
*/
|
||
|
|
||
|
static int mlt_playlist_unmix( mlt_playlist this, int clip )
|
||
|
{
|
||
|
int error = ( clip < 0 || clip >= this->count );
|
||
|
|
||
|
// Ensure that the clip request is actually a mix
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
mlt_producer producer = mlt_producer_cut_parent( this->list[ clip ]->producer );
|
||
|
mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
|
||
|
error = mlt_properties_get_data( properties, "mlt_mix", NULL ) == NULL ||
|
||
|
this->list[ clip ]->preservation_hack;
|
||
|
}
|
||
|
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
playlist_entry *mix = this->list[ clip ];
|
||
|
mlt_tractor tractor = ( mlt_tractor )mlt_producer_cut_parent( mix->producer );
|
||
|
mlt_properties properties = MLT_TRACTOR_PROPERTIES( tractor );
|
||
|
mlt_producer clip_a = mlt_properties_get_data( properties, "mix_in", NULL );
|
||
|
mlt_producer clip_b = mlt_properties_get_data( properties, "mix_out", NULL );
|
||
|
int length = mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor ) );
|
||
|
mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
|
||
|
if ( clip_a != NULL )
|
||
|
{
|
||
|
mlt_producer_set_in_and_out( clip_a, mlt_producer_get_in( clip_a ), mlt_producer_get_out( clip_a ) + length );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_producer cut = mlt_tractor_get_track( tractor, 0 );
|
||
|
mlt_playlist_insert( this, cut, clip, -1, -1 );
|
||
|
clip ++;
|
||
|
}
|
||
|
|
||
|
if ( clip_b != NULL )
|
||
|
{
|
||
|
mlt_producer_set_in_and_out( clip_b, mlt_producer_get_in( clip_b ) - length, mlt_producer_get_out( clip_b ) );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_producer cut = mlt_tractor_get_track( tractor, 1 );
|
||
|
mlt_playlist_insert( this, cut, clip + 1, -1, -1 );
|
||
|
}
|
||
|
|
||
|
mlt_properties_set_data( properties, "mlt_mix", NULL, 0, NULL, NULL );
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
static int mlt_playlist_resize_mix( mlt_playlist this, int clip, int in, int out )
|
||
|
{
|
||
|
int error = ( clip < 0 || clip >= this->count );
|
||
|
|
||
|
// Ensure that the clip request is actually a mix
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
mlt_producer producer = mlt_producer_cut_parent( this->list[ clip ]->producer );
|
||
|
mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer );
|
||
|
error = mlt_properties_get_data( properties, "mlt_mix", NULL ) == NULL;
|
||
|
}
|
||
|
|
||
|
if ( error == 0 )
|
||
|
{
|
||
|
playlist_entry *mix = this->list[ clip ];
|
||
|
mlt_tractor tractor = ( mlt_tractor )mlt_producer_cut_parent( mix->producer );
|
||
|
mlt_properties properties = MLT_TRACTOR_PROPERTIES( tractor );
|
||
|
mlt_producer clip_a = mlt_properties_get_data( properties, "mix_in", NULL );
|
||
|
mlt_producer clip_b = mlt_properties_get_data( properties, "mix_out", NULL );
|
||
|
mlt_producer track_a = mlt_tractor_get_track( tractor, 0 );
|
||
|
mlt_producer track_b = mlt_tractor_get_track( tractor, 1 );
|
||
|
int length = out - in + 1;
|
||
|
int length_diff = length - mlt_producer_get_playtime( MLT_TRACTOR_PRODUCER( tractor ) );
|
||
|
mlt_events_block( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
|
||
|
if ( clip_a != NULL )
|
||
|
mlt_producer_set_in_and_out( clip_a, mlt_producer_get_in( clip_a ), mlt_producer_get_out( clip_a ) - length_diff );
|
||
|
|
||
|
if ( clip_b != NULL )
|
||
|
mlt_producer_set_in_and_out( clip_b, mlt_producer_get_in( clip_b ) + length_diff, mlt_producer_get_out( clip_b ) );
|
||
|
|
||
|
mlt_producer_set_in_and_out( track_a, mlt_producer_get_in( track_a ) - length_diff, mlt_producer_get_out( track_a ) );
|
||
|
mlt_producer_set_in_and_out( track_b, mlt_producer_get_in( track_b ), mlt_producer_get_out( track_b ) + length_diff );
|
||
|
mlt_producer_set_in_and_out( MLT_MULTITRACK_PRODUCER( mlt_tractor_multitrack( tractor ) ), in, out );
|
||
|
mlt_producer_set_in_and_out( MLT_TRACTOR_PRODUCER( tractor ), in, out );
|
||
|
mlt_properties_set_position( MLT_PRODUCER_PROPERTIES( mix->producer ), "length", out - in + 1 );
|
||
|
mlt_producer_set_in_and_out( mix->producer, in, out );
|
||
|
|
||
|
mlt_events_unblock( MLT_PLAYLIST_PROPERTIES( this ), this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
return error;
|
||
|
}
|
||
|
|
||
|
/** Consolodate adjacent blank producers.
|
||
|
*/
|
||
|
|
||
|
void mlt_playlist_consolidate_blanks( mlt_playlist this, int keep_length )
|
||
|
{
|
||
|
if ( this != NULL )
|
||
|
{
|
||
|
int i = 0;
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
|
||
|
mlt_events_block( properties, properties );
|
||
|
for ( i = 1; i < this->count; i ++ )
|
||
|
{
|
||
|
playlist_entry *left = this->list[ i - 1 ];
|
||
|
playlist_entry *right = this->list[ i ];
|
||
|
|
||
|
if ( mlt_producer_is_blank( left->producer ) && mlt_producer_is_blank( right->producer ) )
|
||
|
{
|
||
|
mlt_playlist_resize_clip( this, i - 1, 0, left->frame_count + right->frame_count - 1 );
|
||
|
mlt_playlist_remove( this, i -- );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if ( !keep_length && this->count > 0 )
|
||
|
{
|
||
|
playlist_entry *last = this->list[ this->count - 1 ];
|
||
|
if ( mlt_producer_is_blank( last->producer ) )
|
||
|
mlt_playlist_remove( this, this->count - 1 );
|
||
|
}
|
||
|
|
||
|
mlt_events_unblock( properties, properties );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/** Determine if the specified clip index is a blank.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_is_blank( mlt_playlist this, int clip )
|
||
|
{
|
||
|
return this == NULL || mlt_producer_is_blank( mlt_playlist_get_clip( this, clip ) );
|
||
|
}
|
||
|
|
||
|
/** Determine if the specified position is a blank.
|
||
|
*/
|
||
|
|
||
|
int mlt_playlist_is_blank_at( mlt_playlist this, mlt_position position )
|
||
|
{
|
||
|
return this == NULL || mlt_producer_is_blank( mlt_playlist_get_clip_at( this, position ) );
|
||
|
}
|
||
|
|
||
|
/** Replace the specified clip with a blank and return the clip.
|
||
|
*/
|
||
|
|
||
|
mlt_producer mlt_playlist_replace_with_blank( mlt_playlist this, int clip )
|
||
|
{
|
||
|
mlt_producer producer = NULL;
|
||
|
if ( !mlt_playlist_is_blank( this, clip ) )
|
||
|
{
|
||
|
playlist_entry *entry = this->list[ clip ];
|
||
|
int in = entry->frame_in;
|
||
|
int out = entry->frame_out;
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
producer = entry->producer;
|
||
|
mlt_properties_inc_ref( MLT_PRODUCER_PROPERTIES( producer ) );
|
||
|
mlt_events_block( properties, properties );
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
mlt_playlist_blank( this, out - in );
|
||
|
mlt_playlist_move( this, this->count - 1, clip );
|
||
|
mlt_events_unblock( properties, properties );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
mlt_producer_set_in_and_out( producer, in, out );
|
||
|
}
|
||
|
return producer;
|
||
|
}
|
||
|
|
||
|
void mlt_playlist_insert_blank( mlt_playlist this, int clip, int length )
|
||
|
{
|
||
|
if ( this != NULL && length >= 0 )
|
||
|
{
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
mlt_events_block( properties, properties );
|
||
|
mlt_playlist_blank( this, length );
|
||
|
mlt_playlist_move( this, this->count - 1, clip );
|
||
|
mlt_events_unblock( properties, properties );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void mlt_playlist_pad_blanks( mlt_playlist this, mlt_position position, int length, int find )
|
||
|
{
|
||
|
if ( this != NULL && length != 0 )
|
||
|
{
|
||
|
int clip = mlt_playlist_get_clip_index_at( this, position );
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
mlt_events_block( properties, properties );
|
||
|
if ( find && clip < this->count && !mlt_playlist_is_blank( this, clip ) )
|
||
|
clip ++;
|
||
|
if ( clip < this->count && mlt_playlist_is_blank( this, clip ) )
|
||
|
{
|
||
|
mlt_playlist_clip_info info;
|
||
|
mlt_playlist_get_clip_info( this, &info, clip );
|
||
|
if ( info.frame_out + length > info.frame_in )
|
||
|
mlt_playlist_resize_clip( this, clip, info.frame_in, info.frame_out + length );
|
||
|
else
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
}
|
||
|
else if ( find && clip < this->count && length > 0 )
|
||
|
{
|
||
|
mlt_playlist_insert_blank( this, clip, length );
|
||
|
}
|
||
|
mlt_events_unblock( properties, properties );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_insert_at( mlt_playlist this, mlt_position position, mlt_producer producer, int mode )
|
||
|
{
|
||
|
int ret = this == NULL || position < 0 || producer == NULL;
|
||
|
if ( ret == 0 )
|
||
|
{
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
int length = mlt_producer_get_playtime( producer );
|
||
|
int clip = mlt_playlist_get_clip_index_at( this, position );
|
||
|
mlt_playlist_clip_info info;
|
||
|
mlt_playlist_get_clip_info( this, &info, clip );
|
||
|
mlt_events_block( properties, this );
|
||
|
if ( clip < this->count && mlt_playlist_is_blank( this, clip ) )
|
||
|
{
|
||
|
// Split and move to new clip if need be
|
||
|
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
|
||
|
if ( length < info.frame_count )
|
||
|
mlt_playlist_split( this, clip, length - 1 );
|
||
|
|
||
|
// Remove
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
|
||
|
// Insert
|
||
|
mlt_playlist_insert( this, producer, clip, -1, -1 );
|
||
|
ret = clip;
|
||
|
}
|
||
|
else if ( clip < this->count )
|
||
|
{
|
||
|
if ( position > info.start + info.frame_count / 2 )
|
||
|
clip ++;
|
||
|
if ( mode == 1 && clip < this->count && mlt_playlist_is_blank( this, clip ) )
|
||
|
{
|
||
|
mlt_playlist_get_clip_info( this, &info, clip );
|
||
|
if ( length < info.frame_count )
|
||
|
mlt_playlist_split( this, clip, length );
|
||
|
mlt_playlist_remove( this, clip );
|
||
|
}
|
||
|
mlt_playlist_insert( this, producer, clip, -1, -1 );
|
||
|
ret = clip;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
if ( mode == 1 )
|
||
|
mlt_playlist_blank( this, position - mlt_properties_get_int( properties, "length" ) );
|
||
|
mlt_playlist_append( this, producer );
|
||
|
ret = this->count - 1;
|
||
|
}
|
||
|
mlt_events_unblock( properties, this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
ret = -1;
|
||
|
}
|
||
|
return ret;
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_clip_start( mlt_playlist this, int clip )
|
||
|
{
|
||
|
mlt_playlist_clip_info info;
|
||
|
if ( mlt_playlist_get_clip_info( this, &info, clip ) == 0 )
|
||
|
return info.start;
|
||
|
return clip < 0 ? 0 : mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_clip_length( mlt_playlist this, int clip )
|
||
|
{
|
||
|
mlt_playlist_clip_info info;
|
||
|
if ( mlt_playlist_get_clip_info( this, &info, clip ) == 0 )
|
||
|
return info.frame_count;
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_blanks_from( mlt_playlist this, int clip, int bounded )
|
||
|
{
|
||
|
int count = 0;
|
||
|
mlt_playlist_clip_info info;
|
||
|
if ( this != NULL && clip < this->count )
|
||
|
{
|
||
|
mlt_playlist_get_clip_info( this, &info, clip );
|
||
|
if ( mlt_playlist_is_blank( this, clip ) )
|
||
|
count += info.frame_count;
|
||
|
if ( bounded == 0 )
|
||
|
bounded = this->count;
|
||
|
for ( clip ++; clip < this->count && bounded >= 0; clip ++ )
|
||
|
{
|
||
|
mlt_playlist_get_clip_info( this, &info, clip );
|
||
|
if ( mlt_playlist_is_blank( this, clip ) )
|
||
|
count += info.frame_count;
|
||
|
else
|
||
|
bounded --;
|
||
|
}
|
||
|
}
|
||
|
return count;
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_remove_region( mlt_playlist this, mlt_position position, int length )
|
||
|
{
|
||
|
int index = mlt_playlist_get_clip_index_at( this, position );
|
||
|
if ( index >= 0 && index < this->count )
|
||
|
{
|
||
|
mlt_properties properties = MLT_PLAYLIST_PROPERTIES( this );
|
||
|
int clip_start = mlt_playlist_clip_start( this, index );
|
||
|
int clip_length = mlt_playlist_clip_length( this, index );
|
||
|
int list_length = mlt_producer_get_playtime( MLT_PLAYLIST_PRODUCER( this ) );
|
||
|
mlt_events_block( properties, this );
|
||
|
|
||
|
if ( position + length > list_length )
|
||
|
length -= ( position + length - list_length );
|
||
|
|
||
|
if ( clip_start < position )
|
||
|
{
|
||
|
mlt_playlist_split( this, index ++, position - clip_start );
|
||
|
clip_length -= position - clip_start;
|
||
|
}
|
||
|
|
||
|
while( length > 0 )
|
||
|
{
|
||
|
if ( mlt_playlist_clip_length( this, index ) > length )
|
||
|
mlt_playlist_split( this, index, length );
|
||
|
length -= mlt_playlist_clip_length( this, index );
|
||
|
mlt_playlist_remove( this, index );
|
||
|
}
|
||
|
|
||
|
mlt_playlist_consolidate_blanks( this, 0 );
|
||
|
mlt_events_unblock( properties, this );
|
||
|
mlt_playlist_virtual_refresh( this );
|
||
|
|
||
|
// Just to be sure, we'll get the clip index again...
|
||
|
index = mlt_playlist_get_clip_index_at( this, position );
|
||
|
}
|
||
|
return index;
|
||
|
}
|
||
|
|
||
|
int mlt_playlist_move_region( mlt_playlist this, mlt_position position, int length, int new_position )
|
||
|
{
|
||
|
if ( this != NULL )
|
||
|
{
|
||
|
}
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/** Get the current frame.
|
||
|
*/
|
||
|
|
||
|
static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
|
||
|
{
|
||
|
// Check that we have a producer
|
||
|
if ( producer == NULL )
|
||
|
{
|
||
|
*frame = mlt_frame_init( );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
// Get this mlt_playlist
|
||
|
mlt_playlist this = producer->child;
|
||
|
|
||
|
// Need to ensure the frame is deinterlaced when repeating 1 frame
|
||
|
int progressive = 0;
|
||
|
|
||
|
// Get the real producer
|
||
|
mlt_service real = mlt_playlist_virtual_seek( this, &progressive );
|
||
|
|
||
|
// Check that we have a producer
|
||
|
if ( real == NULL )
|
||
|
{
|
||
|
*frame = mlt_frame_init( );
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
// Get the frame
|
||
|
if ( !mlt_properties_get_int( MLT_SERVICE_PROPERTIES( real ), "meta.fx_cut" ) )
|
||
|
{
|
||
|
mlt_service_get_frame( real, frame, index );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
mlt_producer parent = mlt_producer_cut_parent( ( mlt_producer )real );
|
||
|
*frame = mlt_frame_init( );
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "fx_cut", 1 );
|
||
|
mlt_frame_push_service( *frame, NULL );
|
||
|
mlt_frame_push_audio( *frame, NULL );
|
||
|
mlt_service_apply_filters( MLT_PRODUCER_SERVICE( parent ), *frame, 0 );
|
||
|
mlt_service_apply_filters( real, *frame, 0 );
|
||
|
mlt_deque_pop_front( MLT_FRAME_IMAGE_STACK( *frame ) );
|
||
|
mlt_deque_pop_front( MLT_FRAME_AUDIO_STACK( *frame ) );
|
||
|
}
|
||
|
|
||
|
// 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 );
|
||
|
|
||
|
// Set the consumer progressive property
|
||
|
if ( progressive )
|
||
|
{
|
||
|
mlt_properties_set_int( properties, "consumer_deinterlace", progressive );
|
||
|
mlt_properties_set_int( properties, "test_audio", 1 );
|
||
|
}
|
||
|
|
||
|
// 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 );
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/** Close the playlist.
|
||
|
*/
|
||
|
|
||
|
void mlt_playlist_close( mlt_playlist this )
|
||
|
{
|
||
|
if ( this != NULL && mlt_properties_dec_ref( MLT_PLAYLIST_PROPERTIES( this ) ) <= 0 )
|
||
|
{
|
||
|
int i = 0;
|
||
|
this->parent.close = NULL;
|
||
|
for ( i = 0; i < this->count; i ++ )
|
||
|
{
|
||
|
mlt_event_close( this->list[ i ]->event );
|
||
|
mlt_producer_close( this->list[ i ]->producer );
|
||
|
free( this->list[ i ] );
|
||
|
}
|
||
|
mlt_producer_close( &this->blank );
|
||
|
mlt_producer_close( &this->parent );
|
||
|
free( this->list );
|
||
|
free( this );
|
||
|
}
|
||
|
}
|