* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
-// TODO: destroy unreferenced producers
-
+// TODO: destroy unreferenced producers (they are currently destroyed
+// when the returned producer is closed).
+
#include "producer_westley.h"
#include <framework/mlt.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
+#include <ctype.h>
#include <libxml/parser.h>
+#include <libxml/parserInternals.h> // for xmlCreateFileParserCtxt
+#include <libxml/tree.h>
#define STACK_SIZE 1000
+#define BRANCH_SIG_LEN 4000
+
+#undef DEBUG
+#ifdef DEBUG
+extern xmlDocPtr westley_make_doc( mlt_service service );
+#endif
struct deserialise_context_s
{
mlt_properties destructors;
char *property;
mlt_properties producer_properties;
+ int is_value;
+ xmlDocPtr value_doc;
+ xmlNodePtr stack_node[ STACK_SIZE ];
+ int stack_node_size;
+ xmlDocPtr entity_doc;
+ int entity_is_replace;
+ int depth;
+ int branch[ STACK_SIZE ];
+ const xmlChar *publicId;
+ const xmlChar *systemId;
+ mlt_properties params;
+ mlt_deque filter_queue;
+ int in_producer;
};
typedef struct deserialise_context_s *deserialise_context;
+/** Convert the numerical current branch address to a dot-delimited string.
+*/
+static char *serialise_branch( deserialise_context this, char *s )
+{
+ int i;
+
+ s[0] = 0;
+ for ( i = 0; i < this->depth; i++ )
+ {
+ int len = strlen( s );
+ snprintf( s + len, BRANCH_SIG_LEN - len, "%d.", this->branch[ i ] );
+ }
+ return s;
+}
/** Push a service.
*/
static int context_push_service( deserialise_context this, mlt_service that )
{
- int ret = this->stack_service_size >= STACK_SIZE;
+ int ret = this->stack_service_size >= STACK_SIZE - 1;
if ( ret == 0 )
- this->stack_service[ this->stack_service_size ++ ] = that;
+ {
+ this->stack_service[ this->stack_service_size++ ] = that;
+
+ // Record the tree branch on which this service lives
+ if ( mlt_properties_get( mlt_service_properties( that ), "_westley_branch" ) == NULL )
+ {
+ char s[ BRANCH_SIG_LEN ];
+ mlt_properties_set( mlt_service_properties( that ), "_westley_branch", serialise_branch( this, s ) );
+ }
+ }
return ret;
}
return result;
}
+/** Push a node.
+*/
+
+static int context_push_node( deserialise_context this, xmlNodePtr node )
+{
+ int ret = this->stack_node_size >= STACK_SIZE - 1;
+ if ( ret == 0 )
+ this->stack_node[ this->stack_node_size ++ ] = node;
+ return ret;
+}
+
+/** Pop a node.
+*/
+
+static xmlNodePtr context_pop_node( deserialise_context this )
+{
+ xmlNodePtr result = NULL;
+ if ( this->stack_node_size > 0 )
+ result = this->stack_node[ -- this->stack_node_size ];
+ return result;
+}
+
+
// Set the destructor on a new service
static void track_service( mlt_properties properties, void *service, mlt_destructor destructor )
{
mlt_properties_set_int( properties, "registered", ++ registered );
}
+
+// Prepend the property value with the document root
+static inline void qualify_property( deserialise_context context, mlt_properties properties, char *name )
+{
+ char *resource = mlt_properties_get( properties, name );
+ if ( resource != NULL )
+ {
+ // Qualify file name properties
+ char *root = mlt_properties_get( context->producer_map, "_root" );
+ if ( root != NULL )
+ {
+ char *full_resource = malloc( strlen( root ) + strlen( resource ) + 1 );
+ if ( resource[ 0 ] != '/' )
+ {
+ strcpy( full_resource, root );
+ strcat( full_resource, resource );
+ }
+ else
+ {
+ strcpy( full_resource, resource );
+ }
+ mlt_properties_set( properties, name, full_resource );
+ free( full_resource );
+ }
+ }
+}
+
+
+// Forward declarations
+static void on_end_track( deserialise_context context, const xmlChar *name );
+static void on_end_entry( deserialise_context context, const xmlChar *name );
+
static void on_start_tractor( deserialise_context context, const xmlChar *name, const xmlChar **atts)
{
mlt_service service = mlt_tractor_service( mlt_tractor_init() );
mlt_properties_set_position( properties, "length", length );
}
+ if ( mlt_properties_get( properties, "id" ) != NULL )
+ mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
+
context_push_service( context, service );
}
for ( ; atts != NULL && *atts != NULL; atts += 2 )
mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
+ if ( mlt_properties_get( properties, "id" ) != NULL )
+ mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
+
context_push_service( context, service );
}
{
mlt_properties properties = context->producer_properties = mlt_properties_new();
+ context->in_producer ++;
+
for ( ; atts != NULL && *atts != NULL; atts += 2 )
{
mlt_properties_set( properties, (char*) atts[0], (char*) atts[1] );
// Get the playlist from the stack
mlt_service service = context_pop_service( context );
mlt_position length = 0;
-
+
+ if ( service == NULL )
+ return;
+
// Look for the length attribute
for ( ; atts != NULL && *atts != NULL; atts += 2 )
{
static void on_start_entry_track( deserialise_context context, const xmlChar *name, const xmlChar **atts)
{
- // Use a dummy service to hold properties to allow arbitratry nesting
+ // Use a dummy service to hold properties to allow arbitrary nesting
mlt_service service = calloc( 1, sizeof( struct mlt_service_s ) );
mlt_service_init( service, NULL );
// Push the dummy service onto the stack
context_push_service( context, service );
+ if ( strcmp( name, "entry" ) == 0 )
+ mlt_properties_set( mlt_service_properties( service ), "resource", "<entry>" );
+ else
+ mlt_properties_set( mlt_service_properties( service ), "resource", "<track>" );
+
for ( ; atts != NULL && *atts != NULL; atts += 2 )
{
mlt_properties_set( mlt_service_properties( service ), (char*) atts[0], (char*) atts[1] );
if ( mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL ) != NULL )
// Push the referenced producer onto the stack
context_push_service( context, MLT_SERVICE( mlt_properties_get_data( context->producer_map, (char*) atts[1], NULL ) ) );
+ else
+ // Remove the dummy service to cause end element failure
+ context_pop_service( context );
}
}
}
static void on_start_filter( deserialise_context context, const xmlChar *name, const xmlChar **atts)
{
- mlt_properties properties = context->producer_properties = mlt_properties_new();
+ mlt_properties properties = mlt_properties_new();
+
+ if ( context->in_producer != 0 )
+ mlt_deque_push_front( context->filter_queue, context->producer_properties );
+
+ context->producer_properties = properties;
// Set the properties
for ( ; atts != NULL && *atts != NULL; atts += 2 )
if ( context->property != NULL && value != NULL )
mlt_properties_set( properties, context->property, value );
+
+ // Tell parser to collect any further nodes for serialisation
+ context->is_value = 1;
}
-static void on_end_multitrack( deserialise_context context, const xmlChar *name )
+
+/** This function adds a producer to a playlist or multitrack when
+ there is no entry or track element.
+*/
+
+static int add_producer( deserialise_context context, mlt_service service, mlt_position in, mlt_position out )
{
- // Get the producer (multitrack) from the stack
+ // Get the parent producer
mlt_service producer = context_pop_service( context );
+ if ( producer != NULL )
+ {
+ char current_branch[ BRANCH_SIG_LEN ];
+ char *service_branch = mlt_properties_get( mlt_service_properties( producer ), "_westley_branch" );
+
+ // Validate the producer from the stack is an ancestor and not predecessor
+ serialise_branch( context, current_branch );
+ if ( service_branch != NULL && strncmp( service_branch, current_branch, strlen( service_branch ) ) == 0 )
+ {
+ char *resource = mlt_properties_get( mlt_service_properties( producer ), "resource" );
+
+ // Put the parent producer back
+ context_push_service( context, producer );
+
+ // If the parent producer is a multitrack or playlist (not a track or entry)
+ if ( resource && ( strcmp( resource, "<playlist>" ) == 0 ||
+ strcmp( resource, "<multitrack>" ) == 0 ) )
+ {
+//printf( "add_producer: current branch %s service branch %s (%d)\n", current_branch, service_branch, strncmp( service_branch, current_branch, strlen( service_branch ) ) );
+ if ( strcmp( resource, "<playlist>" ) == 0 )
+ {
+ // Append this producer to the playlist
+ mlt_playlist_append_io( MLT_PLAYLIST( producer ),
+ MLT_PRODUCER( service ), in, out );
+ }
+ else
+ {
+ mlt_properties properties = mlt_service_properties( service );
+
+ // Set this producer on the multitrack
+ mlt_multitrack_connect( MLT_MULTITRACK( producer ),
+ MLT_PRODUCER( service ),
+ mlt_multitrack_count( MLT_MULTITRACK( producer ) ) );
+
+ // Set the hide state of the track producer
+ char *hide_s = mlt_properties_get( properties, "hide" );
+ if ( hide_s != NULL )
+ {
+ if ( strcmp( hide_s, "video" ) == 0 )
+ mlt_properties_set_int( properties, "hide", 1 );
+ else if ( strcmp( hide_s, "audio" ) == 0 )
+ mlt_properties_set_int( properties, "hide", 2 );
+ else if ( strcmp( hide_s, "both" ) == 0 )
+ mlt_properties_set_int( properties, "hide", 3 );
+ }
+
+ }
+ // Normally, the enclosing entry or track will pop this service off
+ // In its absence we do not push it on.
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+static void on_end_multitrack( deserialise_context context, const xmlChar *name )
+{
+ // Get the multitrack from the stack
+ mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+
// Get the tractor from the stack
mlt_service service = context_pop_service( context );
-
- // Connect the tractor to the producer
+
+ // Create a tractor if one does not exist
+ char *resource = NULL;
+ if ( service != NULL )
+ resource = mlt_properties_get( mlt_service_properties( service ), "resource" );
+ if ( service == NULL || resource == NULL || strcmp( resource, "<tractor>" ) )
+ {
+//printf("creating a tractor\n");
+ char current_branch[ BRANCH_SIG_LEN ];
+
+ // Put the anonymous service back onto the stack!
+ if ( service != NULL )
+ context_push_service( context, service );
+
+ // Fabricate the tractor
+ service = mlt_tractor_service( mlt_tractor_init() );
+ track_service( context->destructors, service, (mlt_destructor) mlt_tractor_close );
+
+ // Inherit the producer's properties
+ mlt_properties properties = mlt_service_properties( service );
+ mlt_properties_set_position( properties, "length", mlt_producer_get_out( MLT_PRODUCER( producer ) ) + 1 );
+ mlt_producer_set_in_and_out( MLT_PRODUCER( service ), 0, mlt_producer_get_out( MLT_PRODUCER( producer ) ) );
+ mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( MLT_PRODUCER( producer ) ) );
+
+ mlt_properties_set( properties, "_westley_branch", serialise_branch( context, current_branch ) );
+ }
+
+ // Connect the tractor to the multitrack
mlt_tractor_connect( MLT_TRACTOR( service ), producer );
mlt_properties_set_data( mlt_service_properties( service ), "multitrack",
MLT_MULTITRACK( producer ), 0, NULL, NULL );
- // Push the tractor back onto the stack
- context_push_service( context, service );
-
- // Push the producer back onto the stack
+ // See if the tractor should be added to a playlist or multitrack
+ add_producer( context, service, 0, mlt_producer_get_out( MLT_PRODUCER( producer ) ) );
+
+ // Always push the multitrack back onto the stack for filters and transitions
context_push_service( context, producer );
+
+ // Always push the tractor back onto the stack for filters and transitions
+ context_push_service( context, service );
}
static void on_end_playlist( deserialise_context context, const xmlChar *name )
{
// Get the playlist from the stack
- mlt_service service = context_pop_service( context );
- mlt_properties properties = mlt_service_properties( service );
+ mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+ mlt_properties properties = mlt_service_properties( producer );
mlt_position in = mlt_properties_get_position( properties, "in" );
mlt_position out;
if ( mlt_properties_get_position( properties, "length" ) < out )
mlt_properties_set_position( properties, "length", out + 1 );
- mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
-
- // Push the playlist back onto the stack
- context_push_service( context, service );
+ mlt_producer_set_in_and_out( MLT_PRODUCER( producer ), in, out );
+
+ // See if the playlist should be added to a playlist or multitrack
+ if ( add_producer( context, producer, in, out ) == 0 )
+
+ // Otherwise, push the playlist back onto the stack
+ context_push_service( context, producer );
}
static void on_end_track( deserialise_context context, const xmlChar *name )
{
// Get the producer from the stack
mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+ mlt_properties producer_props = mlt_service_properties( producer );
+
+ // See if the producer is a tractor
+ char *resource = mlt_properties_get( producer_props, "resource" );
+ if ( resource && strcmp( resource, "<tractor>" ) == 0 )
+ // If so chomp its producer
+ context_pop_service( context );
// Get the dummy track service from the stack
mlt_service track = context_pop_service( context );
+ if ( track == NULL || strcmp( mlt_properties_get( mlt_service_properties( track ), "resource" ), "<track>" ) )
+ {
+ context_push_service( context, producer );
+ return;
+ }
+ mlt_properties track_props = mlt_service_properties( track );
// Get the multitrack from the stack
mlt_service service = context_pop_service( context );
-
+ if ( service == NULL )
+ {
+ context_push_service( context, producer );
+ return;
+ }
+
// Set the track on the multitrack
mlt_multitrack_connect( MLT_MULTITRACK( service ),
MLT_PRODUCER( producer ),
mlt_multitrack_count( MLT_MULTITRACK( service ) ) );
// Set producer i/o if specified
- if ( mlt_properties_get( mlt_service_properties( track ), "in" ) != NULL ||
- mlt_properties_get( mlt_service_properties( track ), "out" ) != NULL )
+ if ( mlt_properties_get( track_props, "in" ) != NULL ||
+ mlt_properties_get( track_props, "out" ) != NULL )
{
mlt_producer_set_in_and_out( MLT_PRODUCER( producer ),
- mlt_properties_get_position( mlt_service_properties( track ), "in" ),
- mlt_properties_get_position( mlt_service_properties( track ), "out" ) );
+ mlt_properties_get_position( track_props, "in" ),
+ mlt_properties_get_position( track_props, "out" ) );
}
+ // Set the hide state of the track producer
+ char *hide_s = mlt_properties_get( track_props, "hide" );
+ if ( hide_s != NULL )
+ {
+ if ( strcmp( hide_s, "video" ) == 0 )
+ mlt_properties_set_int( producer_props, "hide", 1 );
+ else if ( strcmp( hide_s, "audio" ) == 0 )
+ mlt_properties_set_int( producer_props, "hide", 2 );
+ else if ( strcmp( hide_s, "both" ) == 0 )
+ mlt_properties_set_int( producer_props, "hide", 3 );
+ }
+
// Push the multitrack back onto the stack
context_push_service( context, service );
{
// Get the producer from the stack
mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+
+ // See if the producer is a tractor
+ char *resource = mlt_properties_get( mlt_service_properties( producer ), "resource" );
+ if ( resource && strcmp( resource, "<tractor>" ) == 0 )
+ // If so chomp its producer
+ context_pop_service( context );
// Get the dummy entry service from the stack
mlt_service entry = context_pop_service( context );
+ if ( entry == NULL || strcmp( mlt_properties_get( mlt_service_properties( entry ), "resource" ), "<entry>" ) )
+ {
+ context_push_service( context, producer );
+ return;
+ }
// Get the playlist from the stack
mlt_service service = context_pop_service( context );
+ if ( service == NULL )
+ {
+ context_push_service( context, producer );
+ return;
+ }
// Append the producer to the playlist
if ( mlt_properties_get( mlt_service_properties( entry ), "in" ) != NULL ||
static void on_end_tractor( deserialise_context context, const xmlChar *name )
{
- // Get and discard the last producer
- mlt_producer multitrack = MLT_PRODUCER( context_pop_service( context ) );
-
// Get the tractor
mlt_service tractor = context_pop_service( context );
- multitrack = mlt_properties_get_data( mlt_service_properties( tractor ), "multitrack", NULL );
-
- // Inherit the producer's properties
- mlt_properties properties = mlt_producer_properties( multitrack );
- mlt_properties_set_position( properties, "length", mlt_producer_get_out( multitrack ) + 1 );
- mlt_producer_set_in_and_out( multitrack, 0, mlt_producer_get_out( multitrack ) );
- mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( multitrack ) );
+ if ( tractor == NULL )
+ return;
+
+ // Get the tractor's multitrack
+ mlt_producer multitrack = mlt_properties_get_data( mlt_service_properties( tractor ), "multitrack", NULL );
+ if ( multitrack != NULL )
+ {
+ // Inherit the producer's properties
+ mlt_properties properties = mlt_producer_properties( MLT_PRODUCER( tractor ) );
+ mlt_properties_set_position( properties, "length", mlt_producer_get_out( multitrack ) + 1 );
+ mlt_producer_set_in_and_out( multitrack, 0, mlt_producer_get_out( multitrack ) );
+ mlt_properties_set_double( properties, "fps", mlt_producer_get_fps( multitrack ) );
+ }
- // Push the playlist back onto the stack
- context_push_service( context, tractor );
+ // See if the tractor should be added to a playlist or multitrack
+ if ( add_producer( context, tractor, 0, mlt_producer_get_out( MLT_PRODUCER( tractor ) ) ) == 0 )
+
+ // Otherwise, push the tractor back onto the stack
+ context_push_service( context, tractor );
}
static void on_end_property( deserialise_context context, const xmlChar *name )
{
+ // Tell parser to stop building a tree
+ context->is_value = 0;
+
+ // See if there is a xml tree for the value
+ if ( context->property != NULL && context->value_doc != NULL )
+ {
+ xmlChar *value;
+ int size;
+
+ // Serialise the tree to get value
+ xmlDocDumpMemory( context->value_doc, &value, &size );
+ mlt_properties_set( context->producer_properties, context->property, value );
+ xmlFree( value );
+ xmlFreeDoc( context->value_doc );
+ context->value_doc = NULL;
+ }
+
// Close this property handling
free( context->property );
context->property = NULL;
mlt_properties properties = context->producer_properties;
mlt_service service = NULL;
+ context->in_producer --;
+
if ( properties == NULL )
return;
- // Instatiate the producer
- service = MLT_SERVICE( mlt_factory_producer( "fezzik", mlt_properties_get( properties, "resource" ) ) );
-
- if ( service == NULL && mlt_properties_get( properties, "mlt_service" ) != NULL )
+ qualify_property( context, properties, "resource" );
+ char *resource = mlt_properties_get( properties, "resource" );
+ // Let Kino-SMIL src be a synonym for resource
+ if ( resource == NULL )
{
- service = MLT_SERVICE( mlt_factory_producer( mlt_properties_get( properties, "mlt_service" ),
- mlt_properties_get( properties, "resource" ) ) );
+ qualify_property( context, properties, "src" );
+ resource = mlt_properties_get( properties, "src" );
}
+ // Instantiate the producer
+ if ( mlt_properties_get( properties, "mlt_service" ) != NULL )
+ {
+ char temp[ 1024 ];
+ strncpy( temp, mlt_properties_get( properties, "mlt_service" ), 1024 );
+ if ( resource != NULL )
+ {
+ strcat( temp, ":" );
+ strncat( temp, resource, 1023 - strlen( temp ) );
+ }
+ service = MLT_SERVICE( mlt_factory_producer( "fezzik", temp ) );
+ }
+ if ( service == NULL && resource != NULL )
+ {
+ service = MLT_SERVICE( mlt_factory_producer( "fezzik", resource ) );
+ }
+
+ if ( service == NULL )
+ return;
track_service( context->destructors, service, (mlt_destructor) mlt_producer_close );
// Add the producer to the producer map
if ( mlt_properties_get( properties, "id" ) != NULL )
mlt_properties_set_data( context->producer_map, mlt_properties_get( properties, "id" ), service, 0, NULL, NULL );
+ // Handle in/out properties separately
+ mlt_position in = -1;
+ mlt_position out = -1;
+
+ // Get in
+ if ( mlt_properties_get( properties, "in" ) != NULL )
+ in = mlt_properties_get_position( properties, "in" );
+ // Let Kino-SMIL clipBegin be a synonym for in
+ if ( mlt_properties_get( properties, "clipBegin" ) != NULL )
+ in = mlt_properties_get_position( properties, "clipBegin" );
+ // Get out
+ if ( mlt_properties_get( properties, "out" ) != NULL )
+ out = mlt_properties_get_position( properties, "out" );
+ // Let Kino-SMIL clipEnd be a synonym for out
+ if ( mlt_properties_get( properties, "clipEnd" ) != NULL )
+ out = mlt_properties_get_position( properties, "clipEnd" );
+
+ // Remove in and out
+ mlt_properties_set( properties, "in", NULL );
+ mlt_properties_set( properties, "out", NULL );
+
mlt_properties_inherit( mlt_service_properties( service ), properties );
mlt_properties_close( properties );
context->producer_properties = NULL;
- properties = mlt_service_properties( service );
- // Set in and out
- mlt_producer_set_in_and_out( MLT_PRODUCER( service ),
- mlt_properties_get_position( properties, "in" ),
- mlt_properties_get_position( properties, "out" ) );
+ // See if the producer should be added to a playlist or multitrack
+ if ( add_producer( context, service, in, out ) == 0 )
+ {
+ // Otherwise, set in and out on...
+ if ( in != -1 || out != -1 )
+ {
+ // Get the parent service
+ mlt_service parent = context_pop_service( context );
+ if ( parent != NULL )
+ {
+ // Get the parent properties
+ properties = mlt_service_properties( parent );
+
+ char *resource = mlt_properties_get( properties, "resource" );
+
+ // Put the parent producer back
+ context_push_service( context, parent );
+
+ // If the parent is a track or entry
+ if ( resource && ( strcmp( resource, "<entry>" ) == 0 ) )
+ {
+ mlt_properties_set_position( properties, "in", in );
+ mlt_properties_set_position( properties, "out", out );
+ }
+ else
+ {
+ // Otherwise, set in and out on producer directly
+ mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
+ }
+ }
+ else
+ {
+ // Otherwise, set in and out on producer directly
+ mlt_producer_set_in_and_out( MLT_PRODUCER( service ), in, out );
+ }
+ }
+
+ // Allow for embedded filters
+ while( mlt_deque_count( context->filter_queue ) )
+ {
+ mlt_properties filter_properties = mlt_deque_pop_front( context->filter_queue );
+ mlt_properties_debug( filter_properties, "Filter?", stderr );
+ mlt_filter filter = mlt_factory_filter( mlt_properties_get( filter_properties, "mlt_service" ), NULL );
+ if ( filter != NULL )
+ {
+ track_service( context->destructors, filter, (mlt_destructor) mlt_filter_close );
+ qualify_property( context, filter_properties, "resource" );
+ qualify_property( context, filter_properties, "luma" );
+ qualify_property( context, filter_properties, "luma.resource" );
+ qualify_property( context, filter_properties, "composite.luma" );
+ qualify_property( context, filter_properties, "producer.resource" );
+ mlt_properties_inherit( mlt_filter_properties( filter ), filter_properties );
+ mlt_properties_close( filter_properties );
+ mlt_producer_attach( MLT_PRODUCER( service ), filter );
+ }
+ }
- // Push the new producer onto the stack
- context_push_service( context, service );
+ // Push the producer onto the stack
+ context_push_service( context, service );
+ }
}
static void on_end_filter( deserialise_context context, const xmlChar *name )
{
mlt_properties properties = context->producer_properties;
+ if ( context->in_producer )
+ {
+ mlt_deque_push_back( context->filter_queue, properties );
+ context->producer_properties = mlt_deque_pop_front( context->filter_queue );
+ return;
+ }
+
if ( properties == NULL )
return;
char *id;
char key[11];
key[ 10 ] = '\0';
-
+ mlt_service tractor = NULL;
+
// Get the producer from the stack
mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+
+ // See if the producer is a tractor
+ char *resource = mlt_properties_get( mlt_service_properties( producer ), "resource" );
+ if ( resource != NULL && strcmp( resource, "<tractor>" ) == 0 )
+ {
+ // If so, then get the next producer
+ tractor = producer;
+ producer = context_pop_service( context );
+ }
+
//fprintf( stderr, "connecting filter to %s\n", mlt_properties_get( mlt_service_properties( producer ), "resource" ) );
// Create the filter
mlt_service service = MLT_SERVICE( mlt_factory_filter( mlt_properties_get( properties, "mlt_service" ), NULL ) );
-
+ if ( service == NULL )
+ {
+ context_push_service( context, producer );
+ return;
+ }
track_service( context->destructors, service, (mlt_destructor) mlt_filter_close );
// Connect the filter to the producer
mlt_properties_set_position( properties, "out", mlt_producer_get_out( MLT_PRODUCER( producer ) ) );
// Propogate the properties
+ qualify_property( context, properties, "resource" );
+ qualify_property( context, properties, "luma" );
+ qualify_property( context, properties, "luma.resource" );
+ qualify_property( context, properties, "composite.luma" );
+ qualify_property( context, properties, "producer.resource" );
mlt_properties_inherit( mlt_service_properties( service ), properties );
mlt_properties_close( properties );
context->producer_properties = NULL;
properties = mlt_service_properties( service );
- // Set in and out
-//fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
+ // Set in and out again due to inheritance
mlt_filter_set_in_and_out( MLT_FILTER( service ),
mlt_properties_get_position( properties, "in" ),
mlt_properties_get_position( properties, "out" ) );
- // Get the parent producer from the stack
- mlt_service tractor = context_pop_service( context );
-
- if ( tractor != NULL )
- {
-//fprintf( stderr, "connecting tractor %s to filter\n", mlt_properties_get( mlt_service_properties( tractor ), "resource" ) );
- // Connect the tractor to the filter
- if ( strcmp( mlt_properties_get( mlt_service_properties( tractor ), "resource" ), "<tractor>" ) == 0 )
- mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
-
- // Push the parent producer back onto the stack
- context_push_service( context, tractor );
- }
-
-//fprintf( stderr, "setting filter in %lld out %lld\n", mlt_properties_get_position( properties, "in" ), mlt_properties_get_position( properties, "out" ) );
// If a producer alias is in the producer_map, get it
snprintf( key, 10, "%p", producer );
if ( mlt_properties_get_data( context->producer_map, key, NULL ) != NULL )
// For filter chain support, add an alias to the producer map
snprintf( key, 10, "%p", service );
mlt_properties_set_data( context->producer_map, key, producer, 0, NULL, NULL );
-
+
// Push the filter onto the stack
context_push_service( context, service );
+
+ if ( tractor != NULL )
+ {
+ // Connect the tractor to the filter
+ mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
+ // Push the tractor back onto the stack
+ context_push_service( context, tractor );
+ }
}
static void on_end_transition( deserialise_context context, const xmlChar *name )
{
+ mlt_service tractor = NULL;
mlt_properties properties = context->producer_properties;
if ( properties == NULL )
return;
// Get the producer from the stack
mlt_service producer = context_pop_service( context );
+ if ( producer == NULL )
+ return;
+ // See if the producer is a tractor
+ char *resource = mlt_properties_get( mlt_service_properties( producer ), "resource" );
+ if ( resource != NULL && strcmp( resource, "<tractor>" ) == 0 )
+ {
+ // If so, then get the next producer
+ tractor = producer;
+ producer = context_pop_service( context );
+ }
+
// Create the transition
mlt_service service = MLT_SERVICE( mlt_factory_transition( mlt_properties_get( properties, "mlt_service" ), NULL ) );
-
+ if ( service == NULL )
+ {
+ context_push_service( context, producer );
+ return;
+ }
track_service( context->destructors, service, (mlt_destructor) mlt_transition_close );
// Propogate the properties
+ qualify_property( context, properties, "resource" );
+ qualify_property( context, properties, "luma" );
+ qualify_property( context, properties, "luma.resource" );
+ qualify_property( context, properties, "composite.luma" );
+ qualify_property( context, properties, "producer.resource" );
mlt_properties_inherit( mlt_service_properties( service ), properties );
mlt_properties_close( properties );
context->producer_properties = NULL;
properties = mlt_service_properties( service );
- // Set in and out
+ // Set in and out again due to inheritance
mlt_transition_set_in_and_out( MLT_TRANSITION( service ),
mlt_properties_get_position( properties, "in" ),
mlt_properties_get_position( properties, "out" ) );
- // Connect the filter to the producer
+ // Connect the transition to the producer
mlt_transition_connect( MLT_TRANSITION( service ), producer,
mlt_properties_get_int( properties, "a_track" ),
mlt_properties_get_int( properties, "b_track" ) );
- // Get the tractor from the stack
- mlt_service tractor = context_pop_service( context );
-
- // Connect the tractor to the transition
- mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
-
- // Push the tractor back onto the stack
- context_push_service( context, tractor );
-
// Push the transition onto the stack
context_push_service( context, service );
+
+ if ( tractor != NULL )
+ {
+ // Connect the tractor to the transition
+ mlt_tractor_connect( MLT_TRACTOR( tractor ), service );
+
+ // Push the tractor back onto the stack
+ context_push_service( context, tractor );
+ }
}
static void on_start_element( void *ctx, const xmlChar *name, const xmlChar **atts)
{
- deserialise_context context = ( deserialise_context ) ctx;
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
- if ( strcmp( name, "tractor" ) == 0 )
+//printf("on_start_element: %s\n", name );
+ context->branch[ context->depth ] ++;
+ context->depth ++;
+
+ // Build a tree from nodes within a property value
+ if ( context->is_value == 1 )
+ {
+ xmlNodePtr node = xmlNewNode( NULL, name );
+
+ if ( context->value_doc == NULL )
+ {
+ // Start a new tree
+ context->value_doc = xmlNewDoc( "1.0" );
+ xmlDocSetRootElement( context->value_doc, node );
+ }
+ else
+ {
+ // Append child to tree
+ xmlAddChild( context->stack_node[ context->stack_node_size - 1 ], node );
+ }
+ context_push_node( context, node );
+
+ // Set the attributes
+ for ( ; atts != NULL && *atts != NULL; atts += 2 )
+ xmlSetProp( node, atts[ 0 ], atts[ 1 ] );
+ }
+ else if ( strcmp( name, "tractor" ) == 0 )
on_start_tractor( context, name, atts );
else if ( strcmp( name, "multitrack" ) == 0 )
on_start_multitrack( context, name, atts );
- else if ( strcmp( name, "playlist" ) == 0 )
+ else if ( strcmp( name, "playlist" ) == 0 || strcmp( name, "seq" ) == 0 || strcmp( name, "smil" ) == 0 )
on_start_playlist( context, name, atts );
- else if ( strcmp( name, "producer" ) == 0 )
+ else if ( strcmp( name, "producer" ) == 0 || strcmp( name, "video" ) == 0 )
on_start_producer( context, name, atts );
else if ( strcmp( name, "blank" ) == 0 )
on_start_blank( context, name, atts );
static void on_end_element( void *ctx, const xmlChar *name )
{
- deserialise_context context = ( deserialise_context ) ctx;
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
- if ( strcmp( name, "multitrack" ) == 0 )
+//printf("on_end_element: %s\n", name );
+ if ( context->is_value == 1 && strcmp( name, "property" ) != 0 )
+ context_pop_node( context );
+ else if ( strcmp( name, "multitrack" ) == 0 )
on_end_multitrack( context, name );
- else if ( strcmp( name, "playlist" ) == 0 )
+ else if ( strcmp( name, "playlist" ) == 0 || strcmp( name, "seq" ) == 0 || strcmp( name, "smil" ) == 0 )
on_end_playlist( context, name );
else if ( strcmp( name, "track" ) == 0 )
on_end_track( context, name );
on_end_tractor( context, name );
else if ( strcmp( name, "property" ) == 0 )
on_end_property( context, name );
- else if ( strcmp( name, "producer" ) == 0 )
+ else if ( strcmp( name, "producer" ) == 0 || strcmp( name, "video" ) == 0 )
on_end_producer( context, name );
else if ( strcmp( name, "filter" ) == 0 )
on_end_filter( context, name );
else if ( strcmp( name, "transition" ) == 0 )
on_end_transition( context, name );
+
+ context->branch[ context->depth ] = 0;
+ context->depth --;
}
static void on_characters( void *ctx, const xmlChar *ch, int len )
{
- deserialise_context context = ( deserialise_context ) ctx;
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
char *value = calloc( len + 1, 1 );
value[ len ] = 0;
strncpy( value, (const char*) ch, len );
- if ( context->property != NULL && context->producer_properties != NULL )
- mlt_properties_set( context->producer_properties, context->property, value );
+ if ( context->stack_node_size > 0 )
+ xmlNodeAddContent( context->stack_node[ context->stack_node_size - 1 ], ( xmlChar* )value );
+
+ // libxml2 generates an on_characters immediately after a get_entity within
+ // an element value, and we ignore it because it is called again during
+ // actual substitution.
+ else if ( context->property != NULL && context->producer_properties != NULL
+ && context->entity_is_replace == 0 )
+ {
+ char *s = mlt_properties_get( context->producer_properties, context->property );
+ if ( s != NULL )
+ {
+ // Append new text to existing content
+ char *new = calloc( strlen( s ) + len + 1, 1 );
+ strcat( new, s );
+ strcat( new, value );
+ mlt_properties_set( context->producer_properties, context->property, new );
+ free( new );
+ }
+ else
+ mlt_properties_set( context->producer_properties, context->property, value );
+ }
+ context->entity_is_replace = 0;
free( value);
}
-mlt_producer producer_westley_init( char *filename )
+/** Convert parameters parsed from resource into entity declarations.
+*/
+static void params_to_entities( deserialise_context context )
{
- static int init = 0;
+ if ( context->params != NULL )
+ {
+ int i;
+
+ // Add our params as entitiy declarations
+ for ( i = 0; i < mlt_properties_count( context->params ); i++ )
+ {
+ xmlChar *name = ( xmlChar* )mlt_properties_get_name( context->params, i );
+ xmlAddDocEntity( context->entity_doc, name, XML_INTERNAL_GENERAL_ENTITY,
+ context->publicId, context->systemId, ( xmlChar* )mlt_properties_get( context->params, name ) );
+ }
+
+ // Flag completion
+ mlt_properties_close( context->params );
+ context->params = NULL;
+ }
+}
+
+// The following 3 facilitate entity substitution in the SAX parser
+static void on_internal_subset( void *ctx, const xmlChar* name,
+ const xmlChar* publicId, const xmlChar* systemId )
+{
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
+
+ context->publicId = publicId;
+ context->systemId = systemId;
+ xmlCreateIntSubset( context->entity_doc, name, publicId, systemId );
+
+ // Override default entities with our parameters
+ params_to_entities( context );
+}
+
+static void on_entity_declaration( void *ctx, const xmlChar* name, int type,
+ const xmlChar* publicId, const xmlChar* systemId, xmlChar* content)
+{
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
+
+ xmlAddDocEntity( context->entity_doc, name, type, publicId, systemId, content );
+}
+
+xmlEntityPtr on_get_entity( void *ctx, const xmlChar* name )
+{
+ struct _xmlParserCtxt *xmlcontext = ( struct _xmlParserCtxt* )ctx;
+ deserialise_context context = ( deserialise_context )( xmlcontext->_private );
+ xmlEntityPtr e = NULL;
+
+ // Setup for entity declarations if not ready
+ if ( xmlGetIntSubset( context->entity_doc ) == NULL )
+ {
+ xmlCreateIntSubset( context->entity_doc, "westley", "", "" );
+ context->publicId = "";
+ context->systemId = "";
+ }
+
+ // Add our parameters if not already
+ params_to_entities( context );
+
+ e = xmlGetDocEntity( context->entity_doc, name );
+
+ // Send signal to on_characters that an entity substitutin is pending
+ if ( e != NULL )
+ context->entity_is_replace = 1;
+
+ return e;
+}
+
+/** Convert a hexadecimal character to its value.
+*/
+static int tohex( char p )
+{
+ return isdigit( p ) ? p - '0' : tolower( p ) - 'a' + 10;
+}
+
+/** Decode a url-encoded string containing hexadecimal character sequences.
+*/
+static char *url_decode( char *dest, char *src )
+{
+ char *p = dest;
+
+ while ( *src )
+ {
+ if ( *src == '%' )
+ {
+ *p ++ = ( tohex( *( src + 1 ) ) << 4 ) | tohex( *( src + 2 ) );
+ src += 3;
+ }
+ else
+ {
+ *p ++ = *src ++;
+ }
+ }
+
+ *p = *src;
+ return dest;
+}
+
+/** Extract the filename from a URL attaching parameters to a properties list.
+*/
+static void parse_url( mlt_properties properties, char *url )
+{
+ int i;
+ int n = strlen( url );
+ char *name = NULL;
+ char *value = NULL;
+
+ for ( i = 0; i < n; i++ )
+ {
+ switch ( url[ i ] )
+ {
+ case '?':
+ url[ i++ ] = '\0';
+ name = &url[ i ];
+ break;
+
+ case ':':
+ case '=':
+ url[ i++ ] = '\0';
+ value = &url[ i ];
+ break;
+
+ case '&':
+ url[ i++ ] = '\0';
+ if ( name != NULL && value != NULL )
+ mlt_properties_set( properties, name, value );
+ name = &url[ i ];
+ value = NULL;
+ break;
+ }
+ }
+ if ( name != NULL && value != NULL )
+ mlt_properties_set( properties, name, value );
+}
+
+mlt_producer producer_westley_init( char *url )
+{
+ if ( url == NULL )
+ return NULL;
xmlSAXHandler *sax = calloc( 1, sizeof( xmlSAXHandler ) );
struct deserialise_context_s *context = calloc( 1, sizeof( struct deserialise_context_s ) );
mlt_properties properties = NULL;
int i = 0;
-
+ struct _xmlParserCtxt *xmlcontext;
+ int well_formed = 0;
+ char *filename = strdup( url );
+
context->producer_map = mlt_properties_new();
context->destructors = mlt_properties_new();
+ context->params = mlt_properties_new();
+ context->filter_queue = mlt_deque_init();
+
+ // Decode URL and parse parameters
+ parse_url( context->params, url_decode( filename, url ) );
+
// We need to track the number of registered filters
mlt_properties_set_int( context->destructors, "registered", 0 );
- sax->startElement = on_start_element;
- sax->endElement = on_end_element;
- sax->characters = on_characters;
- if ( !init )
+ // We need the directory prefix which was used for the westley
+ mlt_properties_set( context->producer_map, "_root", "" );
+ if ( strchr( filename, '/' ) )
{
- xmlInitParser();
- //init = 1;
+ char *root = NULL;
+ mlt_properties_set( context->producer_map, "_root", filename );
+ root = mlt_properties_get( context->producer_map, "_root" );
+ *( strrchr( root, '/' ) + 1 ) = '\0';
}
- xmlSAXUserParseFile( sax, context, filename );
-
- // Need the complete producer list for various reasons
- properties = context->destructors;
+ // Setup SAX callbacks
+ sax->startElement = on_start_element;
+ sax->endElement = on_end_element;
+ sax->characters = on_characters;
+ sax->cdataBlock = on_characters;
+ sax->internalSubset = on_internal_subset;
+ sax->entityDecl = on_entity_declaration;
+ sax->getEntity = on_get_entity;
+
+ // Setup libxml2 SAX parsing
+ xmlInitParser();
+ xmlSubstituteEntitiesDefault( 1 );
+ // This is used to facilitate entity substitution in the SAX parser
+ context->entity_doc = xmlNewDoc( "1.0" );
+ xmlcontext = xmlCreateFileParserCtxt( filename );
+ xmlcontext->sax = sax;
+ xmlcontext->_private = ( void* )context;
+
+ // Parse
+ xmlParseDocument( xmlcontext );
+ well_formed = xmlcontext->wellFormed;
+
+ // Cleanup after parsing
+ xmlFreeDoc( context->entity_doc );
+ free( sax );
+ xmlcontext->sax = NULL;
+ xmlcontext->_private = NULL;
+ xmlFreeParserCtxt( xmlcontext );
+ xmlMemoryDump( ); // for debugging
// Get the last producer on the stack
mlt_service service = context_pop_service( context );
+ if ( well_formed && service != NULL )
+ {
+ // Verify it is a producer service (mlt_type="mlt_producer")
+ // (producer, playlist, multitrack)
+ char *type = mlt_properties_get( mlt_service_properties( service ), "mlt_type" );
+ if ( type == NULL || ( strcmp( type, "mlt_producer" ) != 0 && strcmp( type, "producer" ) != 0 ) )
+ service = NULL;
+ }
- // Do we actually have a producer here?
- if ( service != NULL )
+#ifdef DEBUG
+ xmlDocPtr doc = westley_make_doc( service );
+ xmlDocFormatDump( stdout, doc, 1 );
+ xmlFreeDoc( doc );
+ service = NULL;
+#endif
+
+ if ( well_formed && service != NULL )
{
+
+ // Need the complete producer list for various reasons
+ properties = context->destructors;
+
// Now make sure we don't have a reference to the service in the properties
for ( i = mlt_properties_count( properties ) - 1; i >= 1; i -- )
{
mlt_properties_set_data( properties, "__destructors__", context->destructors, 0, (mlt_destructor) mlt_properties_close, NULL );
// Now assign additional properties
- mlt_properties_set( properties, "resource", filename );
+ mlt_properties_set( properties, "resource", url );
// This tells consumer_westley not to deep copy
mlt_properties_set( properties, "westley", "was here" );
}
else
{
+ // Return null if not well formed
+ service = NULL;
+
// Clean up
- mlt_properties_close( properties );
+ mlt_properties_close( context->destructors );
}
- free( context->stack_service );
+ // Clean up
mlt_properties_close( context->producer_map );
- //free( context );
- free( sax );
- xmlCleanupParser();
- xmlMemoryDump( );
-
+ if ( context->params != NULL )
+ mlt_properties_close( context->params );
+ mlt_deque_close( context->filter_queue );
+ free( context );
+ free( filename );
return MLT_PRODUCER( service );
}
-
projects / melted / blobdiff