mlt_consumer consumer_multi_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
mlt_consumer consumer = mlt_consumer_new( profile );
if ( consumer )
{
mlt_properties properties = MLT_CONSUMER_PROPERTIES(consumer);
// Set defaults
mlt_properties_set( properties, "resource", arg );
mlt_properties_set_int( properties, "real_time", -1 );
mlt_properties_set_int( properties, "terminate_on_pause", 1 );
// Init state
mlt_properties_set_int( properties, "joined", 1 );
// Assign callbacks
consumer->close = consumer_close;
consumer->start = start;
consumer->stop = stop;
consumer->is_stopped = is_stopped;
}
return consumer;
}
mlt_consumer consumer_null_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
// Allocate the consumer
mlt_consumer this = mlt_consumer_new( profile );
// If memory allocated and initialises without error
if ( this != NULL )
{
// Assign close callback
this->close = consumer_close;
// Set up start/stop/terminated callbacks
this->start = consumer_start;
this->stop = consumer_stop;
this->is_stopped = consumer_is_stopped;
}
// Return this
return this;
}
mlt_consumer consumer_blipflash_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
// Allocate the consumer
mlt_consumer consumer = mlt_consumer_new( profile );
mlt_properties consumer_properties = MLT_CONSUMER_PROPERTIES( consumer );
avsync_stats* stats = NULL;
// If memory allocated and initializes without error
if ( consumer != NULL )
{
// Set up start/stop/terminated callbacks
consumer->close = consumer_close;
consumer->start = consumer_start;
consumer->stop = consumer_stop;
consumer->is_stopped = consumer_is_stopped;
stats = mlt_pool_alloc( sizeof( avsync_stats ) );
stats->flash_history_count = 0;
stats->blip_history_count = 0;
stats->blip_in_progress = 0;
stats->samples_since_blip = 0;
stats->blip = 0;
stats->flash = 0;
stats->sample_offset = INT_MAX;
stats->report_frames = 0;
stats->out_file = stdout;
if ( arg != NULL )
{
FILE* out_file = fopen( arg, "w" );
if ( out_file != NULL )
stats->out_file = out_file;
}
mlt_properties_set_data( consumer_properties, "_stats", stats, 0, NULL, NULL );
mlt_properties_set( consumer_properties, "report", "blip" );
}
// Return this
return consumer;
}
static int get_frame( mlt_producer self, mlt_frame_ptr frame, int index )
{
mlt_properties properties = MLT_PRODUCER_PROPERTIES(self);
context cx = mlt_properties_get_data( properties, "context", NULL );
if ( !cx )
{
// Allocate and initialize our context
cx = mlt_pool_alloc( sizeof( struct context_s ) );
memset( cx, 0, sizeof( *cx ) );
mlt_properties_set_data( properties, "context", cx, 0, mlt_pool_release, NULL );
cx->self = self;
char *profile_name = mlt_properties_get( properties, "profile" );
if ( !profile_name )
profile_name = mlt_properties_get( properties, "mlt_profile" );
mlt_profile profile = mlt_service_profile( MLT_PRODUCER_SERVICE( self ) );
if ( profile_name )
{
cx->profile = mlt_profile_init( profile_name );
cx->profile->is_explicit = 1;
}
else
{
cx->profile = mlt_profile_clone( profile );
cx->profile->is_explicit = 0;
}
// Encapsulate a real producer for the resource
cx->producer = mlt_factory_producer( cx->profile, NULL,
mlt_properties_get( properties, "resource" ) );
if ( ( profile_name && !strcmp( profile_name, "auto" ) ) ||
mlt_properties_get_int( properties, "autoprofile" ) )
{
mlt_profile_from_producer( cx->profile, cx->producer );
mlt_producer_close( cx->producer );
cx->producer = mlt_factory_producer( cx->profile, NULL, mlt_properties_get( properties, "resource" ) );
}
// Since we control the seeking, prevent it from seeking on its own
mlt_producer_set_speed( cx->producer, 0 );
cx->audio_position = -1;
// We will encapsulate a consumer
cx->consumer = mlt_consumer_new( cx->profile );
// Do not use _pass_list on real_time so that it defaults to 0 in the absence of
// an explicit real_time property.
mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( cx->consumer ), "real_time",
mlt_properties_get_int( properties, "real_time" ) );
mlt_properties_pass_list( MLT_CONSUMER_PROPERTIES( cx->consumer ), properties,
"buffer, prefill, deinterlace_method, rescale" );
// Connect it all together
mlt_consumer_connect( cx->consumer, MLT_PRODUCER_SERVICE( cx->producer ) );
mlt_consumer_start( cx->consumer );
}
// Generate a frame
*frame = mlt_frame_init( MLT_PRODUCER_SERVICE( self ) );
if ( *frame )
{
// Seek the producer to the correct place
// Calculate our positions
double actual_position = (double) mlt_producer_frame( self );
if ( mlt_producer_get_speed( self ) != 0 )
actual_position *= mlt_producer_get_speed( self );
mlt_position need_first = floor( actual_position );
mlt_producer_seek( cx->producer,
lrint( need_first * mlt_profile_fps( cx->profile ) / mlt_producer_get_fps( self ) ) );
// Get the nested frame
mlt_frame nested_frame = mlt_consumer_rt_frame( cx->consumer );
// Stack the producer and our methods on the nested frame
mlt_frame_push_service( *frame, nested_frame );
mlt_frame_push_service( *frame, cx );
mlt_frame_push_get_image( *frame, get_image );
mlt_frame_push_audio( *frame, nested_frame );
mlt_frame_push_audio( *frame, cx );
mlt_frame_push_audio( *frame, get_audio );
// Give the returned frame temporal identity
mlt_frame_set_position( *frame, mlt_producer_position( self ) );
// Store the nested frame on the produced frame for destruction
mlt_properties frame_props = MLT_FRAME_PROPERTIES( *frame );
mlt_properties_set_data( frame_props, "_producer_consumer.frame", nested_frame, 0, (mlt_destructor) mlt_frame_close, NULL );
// Inform the normalizers about our video properties
mlt_properties_set_double( frame_props, "aspect_ratio", mlt_profile_sar( cx->profile ) );
mlt_properties_set_int( frame_props, "width", cx->profile->width );
mlt_properties_set_int( frame_props, "height", cx->profile->height );
mlt_properties_set_int( frame_props, "meta.media.width", cx->profile->width );
mlt_properties_set_int( frame_props, "meta.media.height", cx->profile->height );
mlt_properties_set_int( frame_props, "progressive", cx->profile->progressive );
}
// Calculate the next timecode
mlt_producer_prepare_next( self );
return 0;
}
