mlt_frame mlt_frame_init( mlt_service service )
{
// Allocate a frame
mlt_frame this = calloc( sizeof( struct mlt_frame_s ), 1 );
if ( this != NULL )
{
mlt_profile profile = mlt_service_profile( service );
// Initialise the properties
mlt_properties properties = &this->parent;
mlt_properties_init( properties, this );
// Set default properties on the frame
mlt_properties_set_position( properties, "_position", 0.0 );
mlt_properties_set_data( properties, "image", NULL, 0, NULL, NULL );
mlt_properties_set_int( properties, "width", profile? profile->width : 720 );
mlt_properties_set_int( properties, "height", profile? profile->height : 576 );
mlt_properties_set_int( properties, "normalised_width", profile? profile->width : 720 );
mlt_properties_set_int( properties, "normalised_height", profile? profile->height : 576 );
mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
mlt_properties_set_data( properties, "audio", NULL, 0, NULL, NULL );
mlt_properties_set_data( properties, "alpha", NULL, 0, NULL, NULL );
// Construct stacks for frames and methods
this->stack_image = mlt_deque_init( );
this->stack_audio = mlt_deque_init( );
this->stack_service = mlt_deque_init( );
}
return this;
}
static void consumer_read_ahead_start( mlt_consumer self )
{
// We're running now
self->ahead = 1;
// Create the frame queue
self->queue = mlt_deque_init( );
// Create the queue mutex
pthread_mutex_init( &self->queue_mutex, NULL );
// Create the condition
pthread_cond_init( &self->queue_cond, NULL );
// Create the read ahead
if ( mlt_properties_get( MLT_CONSUMER_PROPERTIES( self ), "priority" ) )
{
struct sched_param priority;
priority.sched_priority = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( self ), "priority" );
pthread_attr_t thread_attributes;
pthread_attr_init( &thread_attributes );
pthread_attr_setschedpolicy( &thread_attributes, SCHED_OTHER );
pthread_attr_setschedparam( &thread_attributes, &priority );
pthread_attr_setinheritsched( &thread_attributes, PTHREAD_EXPLICIT_SCHED );
pthread_attr_setscope( &thread_attributes, PTHREAD_SCOPE_SYSTEM );
if ( pthread_create( &self->ahead_thread, &thread_attributes, consumer_read_ahead_thread, self ) < 0 )
pthread_create( &self->ahead_thread, NULL, consumer_read_ahead_thread, self );
pthread_attr_destroy( &thread_attributes );
}
else
{
pthread_create( &self->ahead_thread, NULL, consumer_read_ahead_thread, self );
}
self->started = 1;
}
bool open( unsigned card = 0 )
{
IDeckLinkIterator* decklinkIterator = NULL;
try
{
#ifdef WIN32
HRESULT result = CoInitialize( NULL );
if ( FAILED( result ) )
throw "COM initialization failed";
result = CoCreateInstance( CLSID_CDeckLinkIterator, NULL, CLSCTX_ALL, IID_IDeckLinkIterator, (void**) &decklinkIterator );
if ( FAILED( result ) )
throw "The DeckLink drivers are not installed.";
#else
decklinkIterator = CreateDeckLinkIteratorInstance();
if ( !decklinkIterator )
throw "The DeckLink drivers are not installed.";
#endif
// Connect to the Nth DeckLink instance
for ( unsigned i = 0; decklinkIterator->Next( &m_decklink ) == S_OK ; i++)
{
if ( i == card )
break;
else
SAFE_RELEASE( m_decklink );
}
SAFE_RELEASE( decklinkIterator );
if ( !m_decklink )
throw "DeckLink card not found.";
// Get the input interface
if ( m_decklink->QueryInterface( IID_IDeckLinkInput, (void**) &m_decklinkInput ) != S_OK )
throw "No DeckLink cards support input.";
// Provide this class as a delegate to the input callback
m_decklinkInput->SetCallback( this );
// Initialize other members
pthread_mutex_init( &m_mutex, NULL );
pthread_cond_init( &m_condition, NULL );
m_queue = mlt_deque_init();
m_started = false;
m_dropped = 0;
m_isBuffering = true;
m_cache = mlt_cache_init();
// 3 covers YADIF and increasing framerate use cases
mlt_cache_set_size( m_cache, 3 );
}
catch ( const char *error )
{
SAFE_RELEASE( m_decklinkInput );
SAFE_RELEASE( m_decklink );
mlt_log_error( getProducer(), "%s\n", error );
return false;
}
return true;
}
dv_decoder_t *dv_decoder_alloc( )
{
// We'll return a dv_decoder
dv_decoder_t *this = NULL;
// Lock the mutex
pthread_mutex_lock( &decoder_lock );
// Create the properties if necessary
if ( dv_decoders == NULL )
{
// Create the properties
dv_decoders = mlt_properties_new( );
// Create the stack
mlt_properties_set_data( dv_decoders, "stack", mlt_deque_init( ), 0, ( mlt_destructor )mlt_deque_close, NULL );
// Register the properties for clean up
mlt_factory_register_for_clean_up( dv_decoders, ( mlt_destructor )mlt_properties_close );
}
// Now try to obtain a decoder
if ( dv_decoders != NULL )
{
// Obtain the stack
mlt_deque stack = mlt_properties_get_data( dv_decoders, "stack", NULL );
// Pop the top of the stack
this = mlt_deque_pop_back( stack );
// Create a new decoder if none available
if ( this == NULL )
{
// We'll need a unique property ID for this
char label[ 256 ];
// Configure the decoder
this = dv_decoder_new( FALSE, FALSE, FALSE );
this->quality = DV_QUALITY_COLOR | DV_QUALITY_AC_2;
this->audio->arg_audio_emphasis = 2;
dv_set_audio_correction( this, DV_AUDIO_CORRECT_AVERAGE );
dv_set_error_log( this, NULL );
// Register it with the properties to ensure clean up
sprintf( label, "%p", this );
mlt_properties_set_data( dv_decoders, label, this, 0, ( mlt_destructor )dv_decoder_free, NULL );
}
}
// Unlock the mutex
pthread_mutex_unlock( &decoder_lock );
return this;
}
DeckLinkConsumer()
{
pthread_mutexattr_t mta;
m_displayMode = NULL;
m_deckLinkKeyer = NULL;
m_deckLinkOutput = NULL;
m_deckLink = NULL;
m_aqueue = mlt_deque_init();
m_frames = mlt_deque_init();
// operation locks
m_op_id = OP_NONE;
m_op_arg = 0;
pthread_mutexattr_init( &mta );
pthread_mutexattr_settype( &mta, PTHREAD_MUTEX_RECURSIVE );
pthread_mutex_init( &m_op_lock, &mta );
pthread_mutex_init( &m_op_arg_mutex, &mta );
pthread_mutexattr_destroy( &mta );
pthread_cond_init( &m_op_arg_cond, NULL );
pthread_create( &m_op_thread, NULL, op_main, this );
}
bool open( unsigned card = 0 )
{
IDeckLinkIterator* deckLinkIterator = CreateDeckLinkIteratorInstance();
unsigned i = 0;
if ( !deckLinkIterator )
{
mlt_log_verbose( NULL, "The DeckLink drivers not installed.\n" );
return false;
}
// Connect to the Nth DeckLink instance
do {
if ( deckLinkIterator->Next( &m_deckLink ) != S_OK )
{
mlt_log_verbose( NULL, "DeckLink card not found\n" );
deckLinkIterator->Release();
return false;
}
} while ( ++i <= card );
// Obtain the audio/video output interface (IDeckLinkOutput)
if ( m_deckLink->QueryInterface( IID_IDeckLinkOutput, (void**)&m_deckLinkOutput ) != S_OK )
{
mlt_log_verbose( NULL, "No DeckLink cards support output\n" );
m_deckLink->Release();
m_deckLink = 0;
deckLinkIterator->Release();
return false;
}
// Provide this class as a delegate to the audio and video output interfaces
m_deckLinkOutput->SetScheduledFrameCompletionCallback( this );
m_deckLinkOutput->SetAudioCallback( this );
pthread_mutex_init( &m_mutex, NULL );
pthread_cond_init( &m_condition, NULL );
m_maxAudioBuffer = bmdAudioSampleRate48kHz;
m_videoFrameQ = mlt_deque_init();
return true;
}
void process_queue( mlt_deque data_queue, mlt_frame frame, mlt_filter filter )
{
if ( data_queue != NULL )
{
// Create a new queue for those that we can't handle
mlt_deque temp_queue = mlt_deque_init( );
// Iterate through each entry on the queue
while ( mlt_deque_peek_front( data_queue ) != NULL )
{
// Get the data feed
mlt_properties feed = mlt_deque_pop_front( data_queue );
if ( mlt_properties_get( MLT_FILTER_PROPERTIES( filter ), "debug" ) != NULL )
mlt_properties_debug( feed, mlt_properties_get( MLT_FILTER_PROPERTIES( filter ), "debug" ), stderr );
// Process the data feed...
if ( process_feed( feed, filter, frame ) == 0 )
mlt_properties_close( feed );
else
mlt_deque_push_back( temp_queue, feed );
}
// Now put the unprocessed feeds back on the stack
while ( mlt_deque_peek_front( temp_queue ) )
{
// Get the data feed
mlt_properties feed = mlt_deque_pop_front( temp_queue );
// Put it back on the data queue
mlt_deque_push_back( data_queue, feed );
}
// Close the temporary queue
mlt_deque_close( temp_queue );
}
}
mlt_consumer consumer_sdl2_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
// Create the consumer object
consumer_sdl self = calloc( 1, sizeof( struct consumer_sdl_s ) );
// If no malloc'd and consumer init ok
if ( self != NULL && mlt_consumer_init( &self->parent, self, profile ) == 0 )
{
// Create the queue
self->queue = mlt_deque_init( );
// Get the parent consumer object
mlt_consumer parent = &self->parent;
// We have stuff to clean up, so override the close method
parent->close = consumer_close;
// get a handle on properties
mlt_service service = MLT_CONSUMER_SERVICE( parent );
self->properties = MLT_SERVICE_PROPERTIES( service );
// Set the default volume
mlt_properties_set_double( self->properties, "volume", 1.0 );
// This is the initialisation of the consumer
pthread_mutex_init( &self->audio_mutex, NULL );
pthread_cond_init( &self->audio_cond, NULL);
pthread_mutex_init( &self->video_mutex, NULL );
pthread_cond_init( &self->video_cond, NULL);
// Default scaler (for now we'll use nearest)
mlt_properties_set( self->properties, "rescale", "nearest" );
mlt_properties_set( self->properties, "deinterlace_method", "onefield" );
mlt_properties_set_int( self->properties, "top_field_first", -1 );
// Default buffer for low latency
mlt_properties_set_int( self->properties, "buffer", 1 );
// Default audio buffer
mlt_properties_set_int( self->properties, "audio_buffer", 2048 );
#if defined(_WIN32) && SDL_MAJOR_VERSION == 2
mlt_properties_set( self->properties, "audio_driver", "DirectSound" );
#endif
// Ensure we don't join on a non-running object
self->joined = 1;
// process actual param
if ( arg && sscanf( arg, "%dx%d", &self->width, &self->height ) )
{
mlt_properties_set_int( self->properties, "resolution", 1 );
}
else
{
self->width = mlt_properties_get_int( self->properties, "width" );
self->height = mlt_properties_get_int( self->properties, "height" );
}
// Allow thread to be started/stopped
parent->start = consumer_start;
parent->stop = consumer_stop;
parent->is_stopped = consumer_is_stopped;
parent->purge = consumer_purge;
// Register specific events
mlt_events_register( self->properties, "consumer-sdl-event", ( mlt_transmitter )consumer_sdl_event );
// Return the consumer produced
return parent;
}
// malloc or consumer init failed
free( self );
// Indicate failure
return NULL;
}
int mlt_producer_optimise( mlt_producer self )
{
int error = 1;
mlt_parser parser = mlt_parser_new( );
if ( parser != NULL )
{
int i = 0, j = 0, k = 0;
mlt_properties properties = mlt_parser_properties( parser );
mlt_properties producers = mlt_properties_new( );
mlt_deque stack = mlt_deque_init( );
mlt_properties_set_data( properties, "producers", producers, 0, ( mlt_destructor )mlt_properties_close, NULL );
mlt_properties_set_data( properties, "stack", stack, 0, ( mlt_destructor )mlt_deque_close, NULL );
parser->on_start_producer = on_start_producer;
parser->on_start_track = on_start_track;
parser->on_end_track = on_end_track;
parser->on_start_multitrack = on_start_multitrack;
parser->on_end_multitrack = on_end_multitrack;
push( parser, 0, 0, 0 );
mlt_parser_start( parser, MLT_PRODUCER_SERVICE( self ) );
free( pop( parser ) );
for ( k = 0; k < mlt_properties_count( producers ); k ++ )
{
char *name = mlt_properties_get_name( producers, k );
int count = 0;
int clones = 0;
int max_clones = 0;
mlt_producer producer = mlt_properties_get_data_at( producers, k, &count );
if ( producer != NULL && count > 1 )
{
clip_references *refs = mlt_properties_get_data( properties, name, &count );
for ( i = 0; i < count; i ++ )
{
clones = 0;
for ( j = i + 1; j < count; j ++ )
{
if ( intersect( &refs[ i ], &refs[ j ] ) )
{
clones ++;
mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( refs[ j ].cut ), "_clone", clones );
}
}
if ( clones > max_clones )
max_clones = clones;
}
for ( i = 0; i < count; i ++ )
{
mlt_producer cut = refs[ i ].cut;
if ( mlt_properties_get_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone" ) == -1 )
mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone", 0 );
}
mlt_producer_set_clones( producer, max_clones );
}
else if ( producer != NULL )
{
clip_references *refs = mlt_properties_get_data( properties, name, &count );
for ( i = 0; i < count; i ++ )
{
mlt_producer cut = refs[ i ].cut;
mlt_properties_set_int( MLT_PRODUCER_PROPERTIES( cut ), "_clone", 0 );
}
mlt_producer_set_clones( producer, 0 );
}
}
mlt_parser_close( parser );
}
return error;
}
static int vdpau_decoder_init( producer_avformat self )
{
mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "vdpau_decoder_init\n" );
int success = 1;
self->video_codec->opaque = self;
self->video_codec->get_format = vdpau_get_format;
self->video_codec->get_buffer = vdpau_get_buffer;
self->video_codec->release_buffer = vdpau_release_buffer;
self->video_codec->draw_horiz_band = vdpau_draw_horiz;
self->video_codec->slice_flags = SLICE_FLAG_CODED_ORDER | SLICE_FLAG_ALLOW_FIELD;
self->video_codec->pix_fmt = PIX_FMT_VDPAU_H264;
VdpDecoderProfile profile = VDP_DECODER_PROFILE_H264_HIGH;
uint32_t max_references = self->video_codec->refs;
pthread_mutex_lock( &mlt_sdl_mutex );
VdpStatus status = vdp_decoder_create( self->vdpau->device,
profile, self->video_codec->width, self->video_codec->height, max_references, &self->vdpau->decoder );
pthread_mutex_unlock( &mlt_sdl_mutex );
if ( status == VDP_STATUS_OK )
{
int i, n = FFMIN( self->video_codec->refs + 2, MAX_VDPAU_SURFACES );
self->vdpau->deque = mlt_deque_init();
for ( i = 0; i < n; i++ )
{
if ( VDP_STATUS_OK == vdp_surface_create( self->vdpau->device, VDP_CHROMA_TYPE_420,
self->video_codec->width, self->video_codec->height, &self->vdpau->render_states[i].surface ) )
{
mlt_log_debug( MLT_PRODUCER_SERVICE(self->parent), "successfully created VDPAU surface %x\n",
self->vdpau->render_states[i].surface );
mlt_deque_push_back( self->vdpau->deque, &self->vdpau->render_states[i] );
}
else
{
mlt_log_info( MLT_PRODUCER_SERVICE(self->parent), "failed to create VDPAU surface %dx%d\n",
self->video_codec->width, self->video_codec->height );
while ( mlt_deque_count( self->vdpau->deque ) )
{
struct vdpau_render_state *render = mlt_deque_pop_front( self->vdpau->deque );
vdp_surface_destroy( render->surface );
}
mlt_deque_close( self->vdpau->deque );
success = 0;
break;
}
}
if ( self->vdpau )
self->vdpau->b_age = self->vdpau->ip_age[0] = self->vdpau->ip_age[1] = 256*256*256*64; // magic from Avidemux
}
else
{
success = 0;
self->vdpau->decoder = VDP_INVALID_HANDLE;
mlt_log_error( MLT_PRODUCER_SERVICE(self->parent), "VDPAU failed to initialize decoder (%s)\n",
vdp_get_error_string( status ) );
}
return success;
}
static void consumer_work_start( mlt_consumer self )
{
int n = abs( self->real_time );
pthread_t *thread = calloc( 1, sizeof( pthread_t ) * n );
// We're running now
self->ahead = 1;
self->threads = thread;
// These keep track of the accelleration of frame dropping or recovery.
self->consecutive_dropped = 0;
self->consecutive_rendered = 0;
// This is the position in the queue from which to look for a frame to process.
// If we always start from the head, then we may likely not complete processing
// before the frame is played out.
self->process_head = 0;
// Create the queues
self->queue = mlt_deque_init();
self->worker_threads = mlt_deque_init();
// Create the mutexes
pthread_mutex_init( &self->queue_mutex, NULL );
pthread_mutex_init( &self->done_mutex, NULL );
// Create the conditions
pthread_cond_init( &self->queue_cond, NULL );
pthread_cond_init( &self->done_cond, NULL );
// Create the read ahead
if ( mlt_properties_get( MLT_CONSUMER_PROPERTIES( self ), "priority" ) )
{
struct sched_param priority;
pthread_attr_t thread_attributes;
priority.sched_priority = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( self ), "priority" );
pthread_attr_init( &thread_attributes );
pthread_attr_setschedpolicy( &thread_attributes, SCHED_OTHER );
pthread_attr_setschedparam( &thread_attributes, &priority );
pthread_attr_setinheritsched( &thread_attributes, PTHREAD_EXPLICIT_SCHED );
pthread_attr_setscope( &thread_attributes, PTHREAD_SCOPE_SYSTEM );
while ( n-- )
{
if ( pthread_create( thread, &thread_attributes, consumer_worker_thread, self ) < 0 )
if ( pthread_create( thread, NULL, consumer_worker_thread, self ) == 0 )
mlt_deque_push_back( self->worker_threads, thread );
thread++;
}
pthread_attr_destroy( &thread_attributes );
}
else
{
while ( n-- )
{
if ( pthread_create( thread, NULL, consumer_worker_thread, self ) == 0 )
mlt_deque_push_back( self->worker_threads, thread );
thread++;
}
}
self->started = 1;
}
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track )
{
mlt_tractor self = parent->child;
// We only respond to the first track requests
if ( track == 0 && self->producer != NULL )
{
int i = 0;
int done = 0;
mlt_frame temp = NULL;
int count = 0;
int image_count = 0;
// Get the properties of the parent producer
mlt_properties properties = MLT_PRODUCER_PROPERTIES( parent );
// Try to obtain the multitrack associated to the tractor
mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL );
// Or a specific producer
mlt_producer producer = mlt_properties_get_data( properties, "producer", NULL );
// Determine whether this tractor feeds to the consumer or stops here
int global_feed = mlt_properties_get_int( properties, "global_feed" );
// If we don't have one, we're in trouble...
if ( multitrack != NULL )
{
// The output frame will hold the 'global' data feeds (ie: those which are targetted for the final frame)
mlt_deque data_queue = mlt_deque_init( );
// Used to garbage collect all frames
char label[ 30 ];
// Get the id of the tractor
char *id = mlt_properties_get( properties, "_unique_id" );
// Will be used to store the frame properties object
mlt_properties frame_properties = NULL;
// We'll store audio and video frames to use here
mlt_frame audio = NULL;
mlt_frame video = NULL;
mlt_frame first_video = NULL;
// Temporary properties
mlt_properties temp_properties = NULL;
// Get the multitrack's producer
mlt_producer target = MLT_MULTITRACK_PRODUCER( multitrack );
mlt_producer_seek( target, mlt_producer_frame( parent ) );
mlt_producer_set_speed( target, mlt_producer_get_speed( parent ) );
// We will create one frame and attach everything to it
*frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
// Get the properties of the frame
frame_properties = MLT_FRAME_PROPERTIES( *frame );
// Loop through each of the tracks we're harvesting
for ( i = 0; !done; i ++ )
{
// Get a frame from the producer
mlt_service_get_frame( self->producer, &temp, i );
// Get the temporary properties
temp_properties = MLT_FRAME_PROPERTIES( temp );
// Pass all unique meta properties from the producer's frame to the new frame
mlt_properties_lock( temp_properties );
int props_count = mlt_properties_count( temp_properties );
int j;
for ( j = 0; j < props_count; j ++ )
{
char *name = mlt_properties_get_name( temp_properties, j );
if ( !strncmp( name, "meta.", 5 ) && !mlt_properties_get( frame_properties, name ) )
mlt_properties_set( frame_properties, name, mlt_properties_get_value( temp_properties, j ) );
}
mlt_properties_unlock( temp_properties );
// Copy the format conversion virtual functions
if ( ! (*frame)->convert_image && temp->convert_image )
(*frame)->convert_image = temp->convert_image;
if ( ! (*frame)->convert_audio && temp->convert_audio )
(*frame)->convert_audio = temp->convert_audio;
// Check for last track
done = mlt_properties_get_int( temp_properties, "last_track" );
// Handle fx only tracks
if ( mlt_properties_get_int( temp_properties, "fx_cut" ) )
{
int hide = ( video == NULL ? 1 : 0 ) | ( audio == NULL ? 2 : 0 );
mlt_properties_set_int( temp_properties, "hide", hide );
}
// We store all frames with a destructor on the output frame
sprintf( label, "_%s_%d", id, count ++ );
mlt_properties_set_data( frame_properties, label, temp, 0, ( mlt_destructor )mlt_frame_close, NULL );
// We want to append all 'final' feeds to the global queue
if ( !done && mlt_properties_get_data( temp_properties, "data_queue", NULL ) != NULL )
{
// Move the contents of this queue on to the output frames data queue
mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "data_queue", NULL );
mlt_deque temp = mlt_deque_init( );
while ( global_feed && mlt_deque_count( sub_queue ) )
{
mlt_properties p = mlt_deque_pop_back( sub_queue );
if ( mlt_properties_get_int( p, "final" ) )
mlt_deque_push_back( data_queue, p );
else
mlt_deque_push_back( temp, p );
}
while( mlt_deque_count( temp ) )
mlt_deque_push_front( sub_queue, mlt_deque_pop_back( temp ) );
mlt_deque_close( temp );
}
// Now do the same with the global queue but without the conditional behaviour
if ( mlt_properties_get_data( temp_properties, "global_queue", NULL ) != NULL )
{
mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "global_queue", NULL );
while ( mlt_deque_count( sub_queue ) )
{
mlt_properties p = mlt_deque_pop_back( sub_queue );
mlt_deque_push_back( data_queue, p );
}
}
// Pick up first video and audio frames
if ( !done && !mlt_frame_is_test_audio( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 2 ) )
{
// Order of frame creation is starting to get problematic
if ( audio != NULL )
{
mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), producer_get_audio );
mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), audio );
}
audio = temp;
}
if ( !done && !mlt_frame_is_test_card( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 1 ) )
{
if ( video != NULL )
{
mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), producer_get_image );
mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), video );
}
video = temp;
if ( first_video == NULL )
first_video = temp;
mlt_properties_set_int( MLT_FRAME_PROPERTIES( temp ), "image_count", ++ image_count );
image_count = 1;
}
}
// Now stack callbacks
if ( audio != NULL )
{
mlt_frame_push_audio( *frame, audio );
mlt_frame_push_audio( *frame, producer_get_audio );
}
if ( video != NULL )
{
mlt_properties video_properties = MLT_FRAME_PROPERTIES( first_video );
mlt_frame_push_service( *frame, video );
mlt_frame_push_service( *frame, producer_get_image );
if ( global_feed )
mlt_properties_set_data( frame_properties, "data_queue", data_queue, 0, NULL, NULL );
mlt_properties_set_data( video_properties, "global_queue", data_queue, 0, destroy_data_queue, NULL );
mlt_properties_set_int( frame_properties, "width", mlt_properties_get_int( video_properties, "width" ) );
mlt_properties_set_int( frame_properties, "height", mlt_properties_get_int( video_properties, "height" ) );
mlt_properties_pass_list( frame_properties, video_properties, "meta.media.width, meta.media.height" );
mlt_properties_set_int( frame_properties, "progressive", mlt_properties_get_int( video_properties, "progressive" ) );
mlt_properties_set_double( frame_properties, "aspect_ratio", mlt_properties_get_double( video_properties, "aspect_ratio" ) );
mlt_properties_set_int( frame_properties, "image_count", image_count );
mlt_properties_set_data( frame_properties, "_producer", mlt_frame_get_original_producer( first_video ), 0, NULL, NULL );
}
else
{
destroy_data_queue( data_queue );
}
mlt_frame_set_position( *frame, mlt_producer_frame( parent ) );
mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_audio", audio == NULL );
mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_image", video == NULL );
}
else if ( producer != NULL )
{
mlt_producer_seek( producer, mlt_producer_frame( parent ) );
mlt_producer_set_speed( producer, mlt_producer_get_speed( parent ) );
mlt_service_get_frame( self->producer, frame, track );
}
else
{
mlt_log( MLT_PRODUCER_SERVICE( parent ), MLT_LOG_ERROR, "tractor without a multitrack!!\n" );
mlt_service_get_frame( self->producer, frame, track );
}
// Prepare the next frame
mlt_producer_prepare_next( parent );
// Indicate our found status
return 0;
}
else
{
// Generate a test card
*frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) );
return 0;
}
}
mlt_consumer consumer_sdl_audio_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
{
// Create the consumer object
consumer_sdl self = calloc( 1, sizeof( struct consumer_sdl_s ) );
// If no malloc'd and consumer init ok
if ( self != NULL && mlt_consumer_init( &self->parent, self, profile ) == 0 )
{
// Create the queue
self->queue = mlt_deque_init( );
// Get the parent consumer object
mlt_consumer parent = &self->parent;
// We have stuff to clean up, so override the close method
parent->close = consumer_close;
// get a handle on properties
mlt_service service = MLT_CONSUMER_SERVICE( parent );
self->properties = MLT_SERVICE_PROPERTIES( service );
// Set the default volume
mlt_properties_set_double( self->properties, "volume", 1.0 );
// This is the initialisation of the consumer
pthread_mutex_init( &self->audio_mutex, NULL );
pthread_cond_init( &self->audio_cond, NULL);
pthread_mutex_init( &self->video_mutex, NULL );
pthread_cond_init( &self->video_cond, NULL);
// Default scaler (for now we'll use nearest)
mlt_properties_set( self->properties, "rescale", "nearest" );
mlt_properties_set( self->properties, "deinterlace_method", "onefield" );
mlt_properties_set_int( self->properties, "top_field_first", -1 );
// Default buffer for low latency
mlt_properties_set_int( self->properties, "buffer", 1 );
// Default audio buffer
mlt_properties_set_int( self->properties, "audio_buffer", 2048 );
// Ensure we don't join on a non-running object
self->joined = 1;
// Allow thread to be started/stopped
parent->start = consumer_start;
parent->stop = consumer_stop;
parent->is_stopped = consumer_is_stopped;
parent->purge = consumer_purge;
// Initialize the refresh handler
pthread_cond_init( &self->refresh_cond, NULL );
pthread_mutex_init( &self->refresh_mutex, NULL );
mlt_events_listen( MLT_CONSUMER_PROPERTIES( parent ), self, "property-changed", ( mlt_listener )consumer_refresh_cb );
// Return the consumer produced
return parent;
}
// malloc or consumer init failed
free( self );
// Indicate failure
return NULL;
}
