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798 lines
24 KiB
798 lines
24 KiB
15 years ago
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/*
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* mlt_consumer.c -- abstraction for all consumer services
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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_consumer.h"
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#include "mlt_factory.h"
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#include "mlt_producer.h"
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#include "mlt_frame.h"
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#include "mlt_profile.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <sys/time.h>
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static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
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static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
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static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name );
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static void apply_profile_properties( mlt_profile profile, mlt_properties properties );
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static mlt_event g_event_listener = NULL;
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/** Public final methods
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*/
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int mlt_consumer_init( mlt_consumer this, void *child )
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{
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int error = 0;
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memset( this, 0, sizeof( struct mlt_consumer_s ) );
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this->child = child;
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error = mlt_service_init( &this->parent, this );
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if ( error == 0 )
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{
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// Get the properties from the service
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mlt_properties properties = MLT_SERVICE_PROPERTIES( &this->parent );
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// Apply the profile to properties for legacy integration
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apply_profile_properties( mlt_profile_get(), properties );
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// Default rescaler for all consumers
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mlt_properties_set( properties, "rescale", "bilinear" );
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// Default read ahead buffer size
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mlt_properties_set_int( properties, "buffer", 25 );
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// Default audio frequency and channels
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mlt_properties_set_int( properties, "frequency", 48000 );
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mlt_properties_set_int( properties, "channels", 2 );
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// Default of all consumers is real time
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mlt_properties_set_int( properties, "real_time", 1 );
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// Default to environment test card
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mlt_properties_set( properties, "test_card", mlt_environment( "MLT_TEST_CARD" ) );
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// Hmm - default all consumers to yuv422 :-/
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this->format = mlt_image_yuv422;
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mlt_events_register( properties, "consumer-frame-show", ( mlt_transmitter )mlt_consumer_frame_show );
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mlt_events_register( properties, "consumer-frame-render", ( mlt_transmitter )mlt_consumer_frame_render );
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mlt_events_register( properties, "consumer-stopped", NULL );
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// Register a property-changed listener to handle the profile property -
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// subsequent properties can override the profile
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g_event_listener = mlt_events_listen( properties, this, "property-changed", ( mlt_listener )mlt_consumer_property_changed );
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// Create the push mutex and condition
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pthread_mutex_init( &this->put_mutex, NULL );
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pthread_cond_init( &this->put_cond, NULL );
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}
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return error;
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}
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static void apply_profile_properties( mlt_profile profile, mlt_properties properties )
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{
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mlt_event_block( g_event_listener );
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mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
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mlt_properties_set_int( properties, "frame_rate_num", profile->frame_rate_num );
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mlt_properties_set_int( properties, "frame_rate_den", profile->frame_rate_den );
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mlt_properties_set_int( properties, "width", profile->width );
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mlt_properties_set_int( properties, "height", profile->height );
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mlt_properties_set_int( properties, "progressive", profile->progressive );
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mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
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mlt_properties_set_int( properties, "sample_aspect_num", profile->sample_aspect_num );
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mlt_properties_set_int( properties, "sample_aspect_den", profile->sample_aspect_den );
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mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
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mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
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mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
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mlt_event_unblock( g_event_listener );
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}
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static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name )
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{
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if ( !strcmp( name, "profile" ) )
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{
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// Get the properies
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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// Locate the profile
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mlt_profile_select( mlt_properties_get( properties, "profile" ) );
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// Apply to properties
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apply_profile_properties( mlt_profile_get(), properties );
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}
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else if ( !strcmp( name, "frame_rate_num" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->frame_rate_num = mlt_properties_get_int( properties, "frame_rate_num" );
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mlt_properties_set_double( properties, "fps", mlt_profile_fps( NULL ) );
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}
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else if ( !strcmp( name, "frame_rate_den" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->frame_rate_den = mlt_properties_get_int( properties, "frame_rate_den" );
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mlt_properties_set_double( properties, "fps", mlt_profile_fps( NULL ) );
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}
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else if ( !strcmp( name, "width" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->width = mlt_properties_get_int( properties, "width" );
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}
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else if ( !strcmp( name, "height" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->height = mlt_properties_get_int( properties, "height" );
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}
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else if ( !strcmp( name, "progressive" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->progressive = mlt_properties_get_int( properties, "progressive" );
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}
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else if ( !strcmp( name, "sample_aspect_num" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->sample_aspect_num = mlt_properties_get_int( properties, "sample_aspect_num" );
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mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
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}
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else if ( !strcmp( name, "sample_aspect_den" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->sample_aspect_den = mlt_properties_get_int( properties, "sample_aspect_den" );
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mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( NULL ) );
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}
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else if ( !strcmp( name, "display_aspect_num" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->display_aspect_num = mlt_properties_get_int( properties, "display_aspect_num" );
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mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( NULL ) );
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}
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else if ( !strcmp( name, "display_aspect_den" ) )
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{
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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mlt_profile_get()->display_aspect_den = mlt_properties_get_int( properties, "display_aspect_den" );
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mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( NULL ) );
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}
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}
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static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
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{
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if ( listener != NULL )
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listener( owner, this, ( mlt_frame )args[ 0 ] );
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}
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static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
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{
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if ( listener != NULL )
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listener( owner, this, ( mlt_frame )args[ 0 ] );
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}
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/** Create a new consumer.
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*/
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mlt_consumer mlt_consumer_new( )
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{
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// Create the memory for the structure
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mlt_consumer this = malloc( sizeof( struct mlt_consumer_s ) );
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// Initialise it
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if ( this != NULL )
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mlt_consumer_init( this, NULL );
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// Return it
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return this;
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}
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/** Get the parent service object.
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*/
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mlt_service mlt_consumer_service( mlt_consumer 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 consumer properties.
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*/
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mlt_properties mlt_consumer_properties( mlt_consumer this )
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{
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return this != NULL ? MLT_SERVICE_PROPERTIES( &this->parent ) : NULL;
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}
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/** Connect the consumer to the producer.
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*/
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int mlt_consumer_connect( mlt_consumer this, mlt_service producer )
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{
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return mlt_service_connect_producer( &this->parent, producer, 0 );
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}
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/** Start the consumer.
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*/
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int mlt_consumer_start( mlt_consumer this )
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{
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// Stop listening to the property-changed event
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mlt_event_block( g_event_listener );
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// Get the properies
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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// Determine if there's a test card producer
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char *test_card = mlt_properties_get( properties, "test_card" );
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// Just to make sure nothing is hanging around...
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mlt_frame_close( this->put );
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this->put = NULL;
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this->put_active = 1;
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// Deal with it now.
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if ( test_card != NULL )
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{
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if ( mlt_properties_get_data( properties, "test_card_producer", NULL ) == NULL )
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{
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// Create a test card producer
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mlt_producer producer = mlt_factory_producer( NULL, test_card );
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// Do we have a producer
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if ( producer != NULL )
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{
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// Test card should loop I guess...
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mlt_properties_set( MLT_PRODUCER_PROPERTIES( producer ), "eof", "loop" );
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//mlt_producer_set_speed( producer, 0 );
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//mlt_producer_set_in_and_out( producer, 0, 0 );
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// Set the test card on the consumer
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mlt_properties_set_data( properties, "test_card_producer", producer, 0, ( mlt_destructor )mlt_producer_close, NULL );
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}
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}
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}
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else
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{
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// Allow the hash table to speed things up
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mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
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}
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// Check and run an ante command
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if ( mlt_properties_get( properties, "ante" ) )
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system( mlt_properties_get( properties, "ante" ) );
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// Set the real_time preference
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this->real_time = mlt_properties_get_int( properties, "real_time" );
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// Start the service
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if ( this->start != NULL )
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return this->start( this );
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return 0;
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}
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/** An alternative method to feed frames into the consumer - only valid if
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the consumer itself is not connected.
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*/
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int mlt_consumer_put_frame( mlt_consumer this, mlt_frame frame )
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{
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int error = 1;
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// Get the service assoicated to the consumer
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mlt_service service = MLT_CONSUMER_SERVICE( this );
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if ( mlt_service_producer( service ) == NULL )
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{
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struct timeval now;
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struct timespec tm;
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pthread_mutex_lock( &this->put_mutex );
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while ( this->put_active && this->put != NULL )
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{
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gettimeofday( &now, NULL );
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tm.tv_sec = now.tv_sec + 1;
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tm.tv_nsec = now.tv_usec * 1000;
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pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm );
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}
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if ( this->put_active && this->put == NULL )
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this->put = frame;
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else
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mlt_frame_close( frame );
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pthread_cond_broadcast( &this->put_cond );
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pthread_mutex_unlock( &this->put_mutex );
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}
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else
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{
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mlt_frame_close( frame );
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}
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return error;
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}
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/** Protected method for consumer to get frames from connected service
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*/
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mlt_frame mlt_consumer_get_frame( mlt_consumer this )
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{
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// Frame to return
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mlt_frame frame = NULL;
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// Get the service assoicated to the consumer
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mlt_service service = MLT_CONSUMER_SERVICE( this );
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// Get the consumer properties
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mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
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// Get the frame
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if ( mlt_service_producer( service ) == NULL && mlt_properties_get_int( properties, "put_mode" ) )
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{
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struct timeval now;
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struct timespec tm;
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pthread_mutex_lock( &this->put_mutex );
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while ( this->put_active && this->put == NULL )
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{
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gettimeofday( &now, NULL );
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tm.tv_sec = now.tv_sec + 1;
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tm.tv_nsec = now.tv_usec * 1000;
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pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm );
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}
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frame = this->put;
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this->put = NULL;
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pthread_cond_broadcast( &this->put_cond );
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pthread_mutex_unlock( &this->put_mutex );
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if ( frame != NULL )
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mlt_service_apply_filters( service, frame, 0 );
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}
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else if ( mlt_service_producer( service ) != NULL )
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{
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mlt_service_get_frame( service, &frame, 0 );
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}
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else
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{
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frame = mlt_frame_init( );
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}
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if ( frame != NULL )
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{
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// Get the frame properties
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mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
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// Get the test card producer
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mlt_producer test_card = mlt_properties_get_data( properties, "test_card_producer", NULL );
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// Attach the test frame producer to it.
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if ( test_card != NULL )
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mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL );
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// Attach the rescale property
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mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) );
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// Aspect ratio and other jiggery pokery
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mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "aspect_ratio" ) );
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mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "progressive" ) | mlt_properties_get_int( properties, "deinterlace" ) );
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mlt_properties_set( frame_properties, "deinterlace_method", mlt_properties_get( properties, "deinterlace_method" ) );
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}
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// Return the frame
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return frame;
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}
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static inline long time_difference( struct timeval *time1 )
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{
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struct timeval time2;
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||
|
time2.tv_sec = time1->tv_sec;
|
||
|
time2.tv_usec = time1->tv_usec;
|
||
|
gettimeofday( time1, NULL );
|
||
|
return time1->tv_sec * 1000000 + time1->tv_usec - time2.tv_sec * 1000000 - time2.tv_usec;
|
||
|
}
|
||
|
|
||
|
int mlt_consumer_profile( mlt_properties properties, char *profile )
|
||
|
{
|
||
|
mlt_profile p = mlt_profile_select( profile );
|
||
|
if ( p )
|
||
|
{
|
||
|
apply_profile_properties( p, properties );
|
||
|
return 1;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
return 0;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
static void *consumer_read_ahead_thread( void *arg )
|
||
|
{
|
||
|
// The argument is the consumer
|
||
|
mlt_consumer this = arg;
|
||
|
|
||
|
// Get the properties of the consumer
|
||
|
mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
|
||
|
|
||
|
// Get the width and height
|
||
|
int width = mlt_properties_get_int( properties, "width" );
|
||
|
int height = mlt_properties_get_int( properties, "height" );
|
||
|
|
||
|
// See if video is turned off
|
||
|
int video_off = mlt_properties_get_int( properties, "video_off" );
|
||
|
int preview_off = mlt_properties_get_int( properties, "preview_off" );
|
||
|
int preview_format = mlt_properties_get_int( properties, "preview_format" );
|
||
|
|
||
|
// Get the audio settings
|
||
|
mlt_audio_format afmt = mlt_audio_pcm;
|
||
|
int counter = 0;
|
||
|
double fps = mlt_properties_get_double( properties, "fps" );
|
||
|
int channels = mlt_properties_get_int( properties, "channels" );
|
||
|
int frequency = mlt_properties_get_int( properties, "frequency" );
|
||
|
int samples = 0;
|
||
|
int16_t *pcm = NULL;
|
||
|
|
||
|
// See if audio is turned off
|
||
|
int audio_off = mlt_properties_get_int( properties, "audio_off" );
|
||
|
|
||
|
// Get the maximum size of the buffer
|
||
|
int buffer = mlt_properties_get_int( properties, "buffer" ) + 1;
|
||
|
|
||
|
// General frame variable
|
||
|
mlt_frame frame = NULL;
|
||
|
uint8_t *image = NULL;
|
||
|
|
||
|
// Time structures
|
||
|
struct timeval ante;
|
||
|
|
||
|
// Average time for get_frame and get_image
|
||
|
int count = 1;
|
||
|
int skipped = 0;
|
||
|
int64_t time_wait = 0;
|
||
|
int64_t time_frame = 0;
|
||
|
int64_t time_process = 0;
|
||
|
int skip_next = 0;
|
||
|
mlt_service lock_object = NULL;
|
||
|
|
||
|
if ( preview_off && preview_format != 0 )
|
||
|
this->format = preview_format;
|
||
|
|
||
|
// Get the first frame
|
||
|
frame = mlt_consumer_get_frame( this );
|
||
|
|
||
|
// Get the lock object
|
||
|
lock_object = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "consumer_lock_service", NULL );
|
||
|
|
||
|
// Lock it
|
||
|
if ( lock_object ) mlt_service_lock( lock_object );
|
||
|
|
||
|
// Get the image of the first frame
|
||
|
if ( !video_off )
|
||
|
{
|
||
|
mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-frame-render", frame, NULL );
|
||
|
mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
|
||
|
}
|
||
|
|
||
|
if ( !audio_off )
|
||
|
{
|
||
|
samples = mlt_sample_calculator( fps, frequency, counter++ );
|
||
|
mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
|
||
|
}
|
||
|
|
||
|
// Unlock the lock object
|
||
|
if ( lock_object ) mlt_service_unlock( lock_object );
|
||
|
|
||
|
// Mark as rendered
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
|
||
|
|
||
|
// Get the starting time (can ignore the times above)
|
||
|
gettimeofday( &ante, NULL );
|
||
|
|
||
|
// Continue to read ahead
|
||
|
while ( this->ahead )
|
||
|
{
|
||
|
// Fetch width/height again
|
||
|
width = mlt_properties_get_int( properties, "width" );
|
||
|
height = mlt_properties_get_int( properties, "height" );
|
||
|
|
||
|
// Put the current frame into the queue
|
||
|
pthread_mutex_lock( &this->mutex );
|
||
|
while( this->ahead && mlt_deque_count( this->queue ) >= buffer )
|
||
|
pthread_cond_wait( &this->cond, &this->mutex );
|
||
|
mlt_deque_push_back( this->queue, frame );
|
||
|
pthread_cond_broadcast( &this->cond );
|
||
|
pthread_mutex_unlock( &this->mutex );
|
||
|
|
||
|
time_wait += time_difference( &ante );
|
||
|
|
||
|
// Get the next frame
|
||
|
frame = mlt_consumer_get_frame( this );
|
||
|
time_frame += time_difference( &ante );
|
||
|
|
||
|
// If there's no frame, we're probably stopped...
|
||
|
if ( frame == NULL )
|
||
|
continue;
|
||
|
|
||
|
// Attempt to fetch the lock object
|
||
|
lock_object = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "consumer_lock_service", NULL );
|
||
|
|
||
|
// Increment the count
|
||
|
count ++;
|
||
|
|
||
|
// Lock if there's a lock object
|
||
|
if ( lock_object ) mlt_service_lock( lock_object );
|
||
|
|
||
|
// All non normal playback frames should be shown
|
||
|
if ( mlt_properties_get_int( MLT_FRAME_PROPERTIES( frame ), "_speed" ) != 1 )
|
||
|
{
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "consumer_deinterlace", 1 );
|
||
|
skipped = 0;
|
||
|
time_frame = 0;
|
||
|
time_process = 0;
|
||
|
time_wait = 0;
|
||
|
count = 1;
|
||
|
skip_next = 0;
|
||
|
}
|
||
|
|
||
|
// Get the image
|
||
|
if ( !skip_next )
|
||
|
{
|
||
|
// Get the image, mark as rendered and time it
|
||
|
if ( !video_off )
|
||
|
{
|
||
|
mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-frame-render", frame, NULL );
|
||
|
mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
|
||
|
}
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
// Increment the number of sequentially skipped frames
|
||
|
skipped ++;
|
||
|
skip_next = 0;
|
||
|
|
||
|
// If we've reached an unacceptable level, reset everything
|
||
|
if ( skipped > 5 )
|
||
|
{
|
||
|
skipped = 0;
|
||
|
time_frame = 0;
|
||
|
time_process = 0;
|
||
|
time_wait = 0;
|
||
|
count = 1;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
// Always process audio
|
||
|
if ( !audio_off )
|
||
|
{
|
||
|
samples = mlt_sample_calculator( fps, frequency, counter++ );
|
||
|
mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
|
||
|
}
|
||
|
|
||
|
// Increment the time take for this frame
|
||
|
time_process += time_difference( &ante );
|
||
|
|
||
|
// Determine if the next frame should be skipped
|
||
|
if ( mlt_deque_count( this->queue ) <= 5 && ( ( time_wait + time_frame + time_process ) / count ) > 40000 )
|
||
|
skip_next = 1;
|
||
|
|
||
|
// Unlock if there's a lock object
|
||
|
if ( lock_object ) mlt_service_unlock( lock_object );
|
||
|
}
|
||
|
|
||
|
// Remove the last frame
|
||
|
mlt_frame_close( frame );
|
||
|
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
static void consumer_read_ahead_start( mlt_consumer this )
|
||
|
{
|
||
|
// We're running now
|
||
|
this->ahead = 1;
|
||
|
|
||
|
// Create the frame queue
|
||
|
this->queue = mlt_deque_init( );
|
||
|
|
||
|
// Create the mutex
|
||
|
pthread_mutex_init( &this->mutex, NULL );
|
||
|
|
||
|
// Create the condition
|
||
|
pthread_cond_init( &this->cond, NULL );
|
||
|
|
||
|
// Create the read ahead
|
||
|
pthread_create( &this->ahead_thread, NULL, consumer_read_ahead_thread, this );
|
||
|
}
|
||
|
|
||
|
static void consumer_read_ahead_stop( mlt_consumer this )
|
||
|
{
|
||
|
// Make sure we're running
|
||
|
if ( this->ahead )
|
||
|
{
|
||
|
// Inform thread to stop
|
||
|
this->ahead = 0;
|
||
|
|
||
|
// Broadcast to the condition in case it's waiting
|
||
|
pthread_mutex_lock( &this->mutex );
|
||
|
pthread_cond_broadcast( &this->cond );
|
||
|
pthread_mutex_unlock( &this->mutex );
|
||
|
|
||
|
// Broadcast to the put condition in case it's waiting
|
||
|
pthread_mutex_lock( &this->put_mutex );
|
||
|
pthread_cond_broadcast( &this->put_cond );
|
||
|
pthread_mutex_unlock( &this->put_mutex );
|
||
|
|
||
|
// Join the thread
|
||
|
pthread_join( this->ahead_thread, NULL );
|
||
|
|
||
|
// Destroy the mutex
|
||
|
pthread_mutex_destroy( &this->mutex );
|
||
|
|
||
|
// Destroy the condition
|
||
|
pthread_cond_destroy( &this->cond );
|
||
|
|
||
|
// Wipe the queue
|
||
|
while ( mlt_deque_count( this->queue ) )
|
||
|
mlt_frame_close( mlt_deque_pop_back( this->queue ) );
|
||
|
|
||
|
// Close the queue
|
||
|
mlt_deque_close( this->queue );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
void mlt_consumer_purge( mlt_consumer this )
|
||
|
{
|
||
|
if ( this->ahead )
|
||
|
{
|
||
|
pthread_mutex_lock( &this->mutex );
|
||
|
while ( mlt_deque_count( this->queue ) )
|
||
|
mlt_frame_close( mlt_deque_pop_back( this->queue ) );
|
||
|
pthread_cond_broadcast( &this->cond );
|
||
|
pthread_mutex_unlock( &this->mutex );
|
||
|
}
|
||
|
}
|
||
|
|
||
|
mlt_frame mlt_consumer_rt_frame( mlt_consumer this )
|
||
|
{
|
||
|
// Frame to return
|
||
|
mlt_frame frame = NULL;
|
||
|
|
||
|
// Get the properties
|
||
|
mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
|
||
|
|
||
|
// Check if the user has requested real time or not
|
||
|
if ( this->real_time )
|
||
|
{
|
||
|
int size = 1;
|
||
|
|
||
|
// Is the read ahead running?
|
||
|
if ( this->ahead == 0 )
|
||
|
{
|
||
|
int buffer = mlt_properties_get_int( properties, "buffer" );
|
||
|
int prefill = mlt_properties_get_int( properties, "prefill" );
|
||
|
consumer_read_ahead_start( this );
|
||
|
if ( buffer > 1 )
|
||
|
size = prefill > 0 && prefill < buffer ? prefill : buffer;
|
||
|
}
|
||
|
|
||
|
// Get frame from queue
|
||
|
pthread_mutex_lock( &this->mutex );
|
||
|
while( this->ahead && mlt_deque_count( this->queue ) < size )
|
||
|
pthread_cond_wait( &this->cond, &this->mutex );
|
||
|
frame = mlt_deque_pop_front( this->queue );
|
||
|
pthread_cond_broadcast( &this->cond );
|
||
|
pthread_mutex_unlock( &this->mutex );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
// Get the frame in non real time
|
||
|
frame = mlt_consumer_get_frame( this );
|
||
|
|
||
|
// This isn't true, but from the consumers perspective it is
|
||
|
if ( frame != NULL )
|
||
|
mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
|
||
|
}
|
||
|
|
||
|
return frame;
|
||
|
}
|
||
|
|
||
|
/** Callback for the implementation to indicate a stopped condition.
|
||
|
*/
|
||
|
|
||
|
void mlt_consumer_stopped( mlt_consumer this )
|
||
|
{
|
||
|
mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( this ), "running", 0 );
|
||
|
mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-stopped", NULL );
|
||
|
mlt_event_unblock( g_event_listener );
|
||
|
}
|
||
|
|
||
|
/** Stop the consumer.
|
||
|
*/
|
||
|
|
||
|
int mlt_consumer_stop( mlt_consumer this )
|
||
|
{
|
||
|
// Get the properies
|
||
|
mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
|
||
|
char *debug = mlt_properties_get( MLT_CONSUMER_PROPERTIES( this ), "debug" );
|
||
|
|
||
|
// Just in case...
|
||
|
if ( debug ) fprintf( stderr, "%s: stopping put waiting\n", debug );
|
||
|
pthread_mutex_lock( &this->put_mutex );
|
||
|
this->put_active = 0;
|
||
|
pthread_cond_broadcast( &this->put_cond );
|
||
|
pthread_mutex_unlock( &this->put_mutex );
|
||
|
|
||
|
// Stop the consumer
|
||
|
if ( debug ) fprintf( stderr, "%s: stopping consumer\n", debug );
|
||
|
if ( this->stop != NULL )
|
||
|
this->stop( this );
|
||
|
|
||
|
// Check if the user has requested real time or not and stop if necessary
|
||
|
if ( debug ) fprintf( stderr, "%s: stopping read_ahead\n", debug );
|
||
|
if ( mlt_properties_get_int( properties, "real_time" ) )
|
||
|
consumer_read_ahead_stop( this );
|
||
|
|
||
|
// Kill the test card
|
||
|
mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
|
||
|
|
||
|
// Check and run a post command
|
||
|
if ( mlt_properties_get( properties, "post" ) )
|
||
|
system( mlt_properties_get( properties, "post" ) );
|
||
|
|
||
|
if ( debug ) fprintf( stderr, "%s: stopped\n", debug );
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/** Determine if the consumer is stopped.
|
||
|
*/
|
||
|
|
||
|
int mlt_consumer_is_stopped( mlt_consumer this )
|
||
|
{
|
||
|
// Check if the consumer is stopped
|
||
|
if ( this->is_stopped != NULL )
|
||
|
return this->is_stopped( this );
|
||
|
|
||
|
return 0;
|
||
|
}
|
||
|
|
||
|
/** Close the consumer.
|
||
|
*/
|
||
|
|
||
|
void mlt_consumer_close( mlt_consumer this )
|
||
|
{
|
||
|
if ( this != NULL && mlt_properties_dec_ref( MLT_CONSUMER_PROPERTIES( this ) ) <= 0 )
|
||
|
{
|
||
|
// Get the childs close function
|
||
|
void ( *consumer_close )( ) = this->close;
|
||
|
|
||
|
if ( consumer_close )
|
||
|
{
|
||
|
// Just in case...
|
||
|
//mlt_consumer_stop( this );
|
||
|
|
||
|
this->close = NULL;
|
||
|
consumer_close( this );
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
// Make sure it only gets called once
|
||
|
this->parent.close = NULL;
|
||
|
|
||
|
// Destroy the push mutex and condition
|
||
|
pthread_mutex_destroy( &this->put_mutex );
|
||
|
pthread_cond_destroy( &this->put_cond );
|
||
|
|
||
|
mlt_service_close( &this->parent );
|
||
|
}
|
||
|
}
|
||
|
}
|