+++ /dev/null
-/**
- * \file mlt_consumer.c
- * \brief abstraction for all consumer services
- * \see mlt_consumer_s
- *
- * Copyright (C) 2003-2009 Ushodaya Enterprises Limited
- * \author Charles Yates <charles.yates@pandora.be>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#include "mlt_consumer.h"
-#include "mlt_factory.h"
-#include "mlt_producer.h"
-#include "mlt_frame.h"
-#include "mlt_profile.h"
-#include "mlt_log.h"
-
-#include <stdio.h>
-#include <string.h>
-#include <stdlib.h>
-#include <sys/time.h>
-
-/** Define this if you want an automatic deinterlace (if necessary) when the
- * consumer's producer is not running at normal speed.
- */
-#undef DEINTERLACE_ON_NOT_NORMAL_SPEED
-
-static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
-static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
-static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name );
-static void apply_profile_properties( mlt_consumer this, mlt_profile profile, mlt_properties properties );
-
-/** Initialize a consumer service.
- *
- * \public \memberof mlt_consumer_s
- * \param this the consumer to initialize
- * \param child a pointer to the object for the subclass
- * \param profile the \p mlt_profile_s to use (optional but recommended,
- * uses the environment variable MLT if this is NULL)
- * \return true if there was an error
- */
-
-int mlt_consumer_init( mlt_consumer this, void *child, mlt_profile profile )
-{
- int error = 0;
- memset( this, 0, sizeof( struct mlt_consumer_s ) );
- this->child = child;
- error = mlt_service_init( &this->parent, this );
- if ( error == 0 )
- {
- // Get the properties from the service
- mlt_properties properties = MLT_SERVICE_PROPERTIES( &this->parent );
-
- // Apply profile to properties
- if ( profile == NULL )
- {
- // Normally the application creates the profile and controls its lifetime
- // This is the fallback exception handling
- profile = mlt_profile_init( NULL );
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_properties_set_data( properties, "_profile", profile, 0, (mlt_destructor)mlt_profile_close, NULL );
- }
- apply_profile_properties( this, profile, properties );
-
- // Default rescaler for all consumers
- mlt_properties_set( properties, "rescale", "bilinear" );
-
- // Default read ahead buffer size
- mlt_properties_set_int( properties, "buffer", 25 );
-
- // Default audio frequency and channels
- mlt_properties_set_int( properties, "frequency", 48000 );
- mlt_properties_set_int( properties, "channels", 2 );
-
- // Default of all consumers is real time
- mlt_properties_set_int( properties, "real_time", 1 );
-
- // Default to environment test card
- mlt_properties_set( properties, "test_card", mlt_environment( "MLT_TEST_CARD" ) );
-
- // Hmm - default all consumers to yuv422 :-/
- this->format = mlt_image_yuv422;
-
- mlt_events_register( properties, "consumer-frame-show", ( mlt_transmitter )mlt_consumer_frame_show );
- mlt_events_register( properties, "consumer-frame-render", ( mlt_transmitter )mlt_consumer_frame_render );
- mlt_events_register( properties, "consumer-stopped", NULL );
-
- // Register a property-changed listener to handle the profile property -
- // subsequent properties can override the profile
- this->event_listener = mlt_events_listen( properties, this, "property-changed", ( mlt_listener )mlt_consumer_property_changed );
-
- // Create the push mutex and condition
- pthread_mutex_init( &this->put_mutex, NULL );
- pthread_cond_init( &this->put_cond, NULL );
-
- }
- return error;
-}
-
-/** Convert the profile into properties on the consumer.
- *
- * \private \memberof mlt_consumer_s
- * \param this a consumer
- * \param profile a profile
- * \param properties a properties list (typically, the consumer's)
- */
-
-static void apply_profile_properties( mlt_consumer this, mlt_profile profile, mlt_properties properties )
-{
- mlt_event_block( this->event_listener );
- mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
- mlt_properties_set_int( properties, "frame_rate_num", profile->frame_rate_num );
- mlt_properties_set_int( properties, "frame_rate_den", profile->frame_rate_den );
- mlt_properties_set_int( properties, "width", profile->width );
- mlt_properties_set_int( properties, "height", profile->height );
- mlt_properties_set_int( properties, "progressive", profile->progressive );
- mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
- mlt_properties_set_int( properties, "sample_aspect_num", profile->sample_aspect_num );
- mlt_properties_set_int( properties, "sample_aspect_den", profile->sample_aspect_den );
- mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
- mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
- mlt_properties_set_int( properties, "display_aspect_num", profile->display_aspect_num );
- mlt_event_unblock( this->event_listener );
-}
-
-/** The property-changed event listener
- *
- * \private \memberof mlt_consumer_s
- * \param owner the service a service (ignored)
- * \param this the consumer
- * \param name the name of the property that changed
- */
-
-static void mlt_consumer_property_changed( mlt_service owner, mlt_consumer this, char *name )
-{
- if ( !strcmp( name, "profile" ) )
- {
- // Get the properies
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
-
- // Get the current profile
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
-
- // Load the new profile
- mlt_profile new_profile = mlt_profile_init( mlt_properties_get( properties, name ) );
-
- if ( new_profile )
- {
- // Copy the profile
- if ( profile != NULL )
- {
- free( profile->description );
- memcpy( profile, new_profile, sizeof( struct mlt_profile_s ) );
- profile->description = strdup( new_profile->description );
- mlt_profile_close( new_profile );
- }
- else
- {
- profile = new_profile;
- }
-
- // Apply to properties
- apply_profile_properties( this, profile, properties );
- }
- }
- else if ( !strcmp( name, "frame_rate_num" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- {
- profile->frame_rate_num = mlt_properties_get_int( properties, "frame_rate_num" );
- mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
- }
- }
- else if ( !strcmp( name, "frame_rate_den" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- {
- profile->frame_rate_den = mlt_properties_get_int( properties, "frame_rate_den" );
- mlt_properties_set_double( properties, "fps", mlt_profile_fps( profile ) );
- }
- }
- else if ( !strcmp( name, "width" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- profile->width = mlt_properties_get_int( properties, "width" );
- }
- else if ( !strcmp( name, "height" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- profile->height = mlt_properties_get_int( properties, "height" );
- }
- else if ( !strcmp( name, "progressive" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- profile->progressive = mlt_properties_get_int( properties, "progressive" );
- }
- else if ( !strcmp( name, "sample_aspect_num" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- profile->sample_aspect_num = mlt_properties_get_int( properties, "sample_aspect_num" );
- if ( profile )
- mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
- }
- else if ( !strcmp( name, "sample_aspect_den" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- profile->sample_aspect_den = mlt_properties_get_int( properties, "sample_aspect_den" );
- if ( profile )
- mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
- }
- else if ( !strcmp( name, "display_aspect_num" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- {
- profile->display_aspect_num = mlt_properties_get_int( properties, "display_aspect_num" );
- mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
- }
- }
- else if ( !strcmp( name, "display_aspect_den" ) )
- {
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- if ( profile )
- {
- profile->display_aspect_den = mlt_properties_get_int( properties, "display_aspect_den" );
- mlt_properties_set_double( properties, "display_ratio", mlt_profile_dar( profile ) );
- }
- }
-}
-
-/** The transmitter for the consumer-frame-show event
- *
- * Invokes the listener.
- *
- * \private \memberof mlt_consumer_s
- * \param listener a function pointer that will be invoked
- * \param owner a properties list that will be passed to \p listener
- * \param this a service that will be passed to \p listener
- * \param args an array of pointers - the first entry is passed as a string to \p listener
- */
-
-static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
-{
- if ( listener != NULL )
- listener( owner, this, ( mlt_frame )args[ 0 ] );
-}
-
-/** The transmitter for the consumer-frame-render event
- *
- * Invokes the listener.
- *
- * \private \memberof mlt_consumer_s
- * \param listener a function pointer that will be invoked
- * \param owner a properties list that will be passed to \p listener
- * \param this a service that will be passed to \p listener
- * \param args an array of pointers - the first entry is passed as a string to \p listener
- */
-
-static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
-{
- if ( listener != NULL )
- listener( owner, this, ( mlt_frame )args[ 0 ] );
-}
-
-/** Create a new consumer.
- *
- * \public \memberof mlt_consumer_s
- * \param profile a profile (optional, but recommended)
- * \return a new consumer
- */
-
-mlt_consumer mlt_consumer_new( mlt_profile profile )
-{
- // Create the memory for the structure
- mlt_consumer this = malloc( sizeof( struct mlt_consumer_s ) );
-
- // Initialise it
- if ( this != NULL )
- mlt_consumer_init( this, NULL, profile );
-
- // Return it
- return this;
-}
-
-/** Get the parent service object.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return the parent service class
- * \see MLT_CONSUMER_SERVICE
- */
-
-mlt_service mlt_consumer_service( mlt_consumer this )
-{
- return this != NULL ? &this->parent : NULL;
-}
-
-/** Get the consumer properties.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return the consumer's properties list
- * \see MLT_CONSUMER_PROPERTIES
- */
-
-mlt_properties mlt_consumer_properties( mlt_consumer this )
-{
- return this != NULL ? MLT_SERVICE_PROPERTIES( &this->parent ) : NULL;
-}
-
-/** Connect the consumer to the producer.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \param producer a producer
- * \return > 0 warning, == 0 success, < 0 serious error,
- * 1 = this service does not accept input,
- * 2 = the producer is invalid,
- * 3 = the producer is already registered with this consumer
- */
-
-int mlt_consumer_connect( mlt_consumer this, mlt_service producer )
-{
- return mlt_service_connect_producer( &this->parent, producer, 0 );
-}
-
-/** Start the consumer.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return true if there was an error
- */
-
-int mlt_consumer_start( mlt_consumer this )
-{
- // Stop listening to the property-changed event
- mlt_event_block( this->event_listener );
-
- // Get the properies
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
-
- // Determine if there's a test card producer
- char *test_card = mlt_properties_get( properties, "test_card" );
-
- // Just to make sure nothing is hanging around...
- mlt_frame_close( this->put );
- this->put = NULL;
- this->put_active = 1;
-
- // Deal with it now.
- if ( test_card != NULL )
- {
- if ( mlt_properties_get_data( properties, "test_card_producer", NULL ) == NULL )
- {
- // Create a test card producer
- mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( this ) );
- mlt_producer producer = mlt_factory_producer( profile, NULL, test_card );
-
- // Do we have a producer
- if ( producer != NULL )
- {
- // Test card should loop I guess...
- mlt_properties_set( MLT_PRODUCER_PROPERTIES( producer ), "eof", "loop" );
- //mlt_producer_set_speed( producer, 0 );
- //mlt_producer_set_in_and_out( producer, 0, 0 );
-
- // Set the test card on the consumer
- mlt_properties_set_data( properties, "test_card_producer", producer, 0, ( mlt_destructor )mlt_producer_close, NULL );
- }
- }
- }
- else
- {
- // Allow the hash table to speed things up
- mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
- }
-
- // Set the frame duration in microseconds for the frame-dropping heuristic
- int frame_duration = 1000000 / mlt_properties_get_int( properties, "frame_rate_num" ) *
- mlt_properties_get_int( properties, "frame_rate_den" );
- mlt_properties_set_int( properties, "frame_duration", frame_duration );
-
- // Check and run an ante command
- if ( mlt_properties_get( properties, "ante" ) )
- if ( system( mlt_properties_get( properties, "ante" ) ) == -1 )
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_ERROR, "system(%s) failed!\n", mlt_properties_get( properties, "ante" ) );
-
- // Set the real_time preference
- this->real_time = mlt_properties_get_int( properties, "real_time" );
-
- // Start the service
- if ( this->start != NULL )
- return this->start( this );
-
- return 0;
-}
-
-/** An alternative method to feed frames into the consumer.
- *
- * Only valid if the consumer itself is not connected.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \param frame a frame
- * \return true (ignore this for now)
- */
-
-int mlt_consumer_put_frame( mlt_consumer this, mlt_frame frame )
-{
- int error = 1;
-
- // Get the service assoicated to the consumer
- mlt_service service = MLT_CONSUMER_SERVICE( this );
-
- if ( mlt_service_producer( service ) == NULL )
- {
- struct timeval now;
- struct timespec tm;
- pthread_mutex_lock( &this->put_mutex );
- while ( this->put_active && this->put != NULL )
- {
- gettimeofday( &now, NULL );
- tm.tv_sec = now.tv_sec + 1;
- tm.tv_nsec = now.tv_usec * 1000;
- pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm );
- }
- if ( this->put_active && this->put == NULL )
- this->put = frame;
- else
- mlt_frame_close( frame );
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_unlock( &this->put_mutex );
- }
- else
- {
- mlt_frame_close( frame );
- }
-
- return error;
-}
-
-/** Protected method for consumer to get frames from connected service
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return a frame
- */
-
-mlt_frame mlt_consumer_get_frame( mlt_consumer this )
-{
- // Frame to return
- mlt_frame frame = NULL;
-
- // Get the service assoicated to the consumer
- mlt_service service = MLT_CONSUMER_SERVICE( this );
-
- // Get the consumer properties
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
-
- // Get the frame
- if ( mlt_service_producer( service ) == NULL && mlt_properties_get_int( properties, "put_mode" ) )
- {
- struct timeval now;
- struct timespec tm;
- pthread_mutex_lock( &this->put_mutex );
- while ( this->put_active && this->put == NULL )
- {
- gettimeofday( &now, NULL );
- tm.tv_sec = now.tv_sec + 1;
- tm.tv_nsec = now.tv_usec * 1000;
- pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm );
- }
- frame = this->put;
- this->put = NULL;
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_unlock( &this->put_mutex );
- if ( frame != NULL )
- mlt_service_apply_filters( service, frame, 0 );
- }
- else if ( mlt_service_producer( service ) != NULL )
- {
- mlt_service_get_frame( service, &frame, 0 );
- }
- else
- {
- frame = mlt_frame_init( service );
- }
-
- if ( frame != NULL )
- {
- // Get the frame properties
- mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame );
-
- // Get the test card producer
- mlt_producer test_card = mlt_properties_get_data( properties, "test_card_producer", NULL );
-
- // Attach the test frame producer to it.
- if ( test_card != NULL )
- mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL );
-
- // Attach the rescale property
- mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) );
-
- // Aspect ratio and other jiggery pokery
- mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "aspect_ratio" ) );
- mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "progressive" ) | mlt_properties_get_int( properties, "deinterlace" ) );
- mlt_properties_set( frame_properties, "deinterlace_method", mlt_properties_get( properties, "deinterlace_method" ) );
- }
-
- // Return the frame
- return frame;
-}
-
-/** Compute the time difference between now and a time value.
- *
- * \private \memberof mlt_consumer_s
- * \param time1 a time value to be compared against now
- * \return the difference in microseconds
- */
-
-static inline long time_difference( struct timeval *time1 )
-{
- struct timeval time2;
- 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;
-}
-
-/** The thread procedure for asynchronously pulling frames through the service
- * network connected to a consumer.
- *
- * \private \memberof mlt_consumer_s
- * \param arg a consumer
- */
-
-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 )
- {
-#ifdef DEINTERLACE_ON_NOT_NORMAL_SPEED
- mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "consumer_deinterlace", 1 );
-#endif
- skipped = 0;
- time_frame = 0;
- time_process = 0;
- time_wait = 0;
- count = 1;
- skip_next = 0;
- }
-
- // Get the image
- if ( !skip_next || this->real_time == -1 )
- {
- // 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 )
- {
- int frame_duration = mlt_properties_get_int( properties, "frame_duration" );
- if ( ( ( time_wait + time_frame + time_process ) / count ) > frame_duration )
- 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;
-}
-
-/** Start the read/render thread.
- *
- * \private \memberof mlt_consumer_s
- * \param this a consumer
- */
-
-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
- if ( mlt_properties_get( MLT_CONSUMER_PROPERTIES( this ), "priority" ) )
- {
- struct sched_param priority;
- priority.sched_priority = mlt_properties_get_int( MLT_CONSUMER_PROPERTIES( this ), "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( &this->ahead_thread, &thread_attributes, consumer_read_ahead_thread, this ) < 0 )
- pthread_create( &this->ahead_thread, NULL, consumer_read_ahead_thread, this );
- pthread_attr_destroy( &thread_attributes );
- }
- else
- {
- pthread_create( &this->ahead_thread, NULL, consumer_read_ahead_thread, this );
- }
-}
-
-/** Stop the read/render thread.
- *
- * \private \memberof mlt_consumer_s
- * \param this a consumer
- */
-
-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 );
- }
-}
-
-/** Flush the read/render thread's buffer.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- */
-
-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 );
- }
-}
-
-/** Get the next frame from the producer connected to a consumer.
- *
- * Typically, one uses this instead of \p mlt_consumer_get_frame to make
- * the asynchronous/real-time behavior configurable at runtime.
- * You should close the frame returned from this when you are done with it.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return a frame
- */
-
-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.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- */
-
-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( this->event_listener );
-}
-
-/** Stop the consumer.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return true if there was an error
- */
-
-int mlt_consumer_stop( mlt_consumer this )
-{
- // Get the properies
- mlt_properties properties = MLT_CONSUMER_PROPERTIES( this );
-
- // Just in case...
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping put waiting\n" );
- 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
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping consumer\n" );
- if ( this->stop != NULL )
- this->stop( this );
-
- // Check if the user has requested real time or not and stop if necessary
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopping read_ahead\n" );
- 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" ) )
- if (system( mlt_properties_get( properties, "post" ) ) == -1 )
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_ERROR, "system(%s) failed!\n", mlt_properties_get( properties, "post" ) );
-
- mlt_log( MLT_CONSUMER_SERVICE( this ), MLT_LOG_DEBUG, "stopped\n" );
-
- return 0;
-}
-
-/** Determine if the consumer is stopped.
- *
- * \public \memberof mlt_consumer_s
- * \param this a consumer
- * \return true 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 and destroy the consumer.
- *
- * \public \memberof mlt_consumer_s
- * \param this a 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 );
- }
- }
-}
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