-/*
- * mlt_consumer.c -- abstraction for all consumer services
- * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
- * Author: Charles Yates <charles.yates@pandora.be>
+/**
+ * \file mlt_consumer.c
+ * \brief abstraction for all consumer services
+ * \see mlt_consumer_s
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
+ * Copyright (C) 2003-2010 Ushodaya Enterprises Limited
+ * \author Charles Yates <charles.yates@pandora.be>
+ * \author Dan Dennedy <dan@dennedy.org>
*
- * This program is distributed in the hope that it will be useful,
+ * 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 General Public License for more details.
+ * 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 General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * 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 "config.h"
#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>
-static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args );
+/** 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
-/** Public final methods
-*/
+/** This is not the ideal place for this, but it is needed by VDPAU as well.
+ */
+pthread_mutex_t mlt_sdl_mutex = PTHREAD_MUTEX_INITIALIZER;
-int mlt_consumer_init( mlt_consumer this, void *child )
+/** \brief private members of mlt_consumer */
+
+typedef struct
+{
+ int real_time;
+ int ahead;
+ mlt_image_format format;
+ mlt_deque queue;
+ pthread_t ahead_thread;
+ pthread_mutex_t queue_mutex;
+ pthread_cond_t queue_cond;
+ pthread_mutex_t put_mutex;
+ pthread_cond_t put_cond;
+ mlt_frame put;
+ int put_active;
+ mlt_event event_listener;
+ mlt_position position;
+ int is_purge;
+
+ /* additional fields added for the parallel work queue */
+ mlt_deque worker_threads;
+ pthread_mutex_t done_mutex;
+ pthread_cond_t done_cond;
+ int consecutive_dropped;
+ int consecutive_rendered;
+ int process_head;
+ int started;
+ pthread_t *threads; /**< used to deallocate all threads */
+}
+consumer_private;
+
+static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service self, void **args );
+static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service self, void **args );
+static void mlt_consumer_property_changed( mlt_properties owner, mlt_consumer self, char *name );
+static void apply_profile_properties( mlt_consumer self, mlt_profile profile, mlt_properties properties );
+static void on_consumer_frame_show( mlt_properties owner, mlt_consumer self, mlt_frame frame );
+
+/** Initialize a consumer service.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self 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 self is NULL)
+ * \return true if there was an error
+ */
+
+int mlt_consumer_init( mlt_consumer self, 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 );
+ memset( self, 0, sizeof( struct mlt_consumer_s ) );
+ self->child = child;
+ consumer_private *priv = self->local = calloc( 1, sizeof( consumer_private ) );
+
+ error = mlt_service_init( &self->parent, self );
if ( error == 0 )
{
// Get the properties from the service
- mlt_properties properties = mlt_service_properties( &this->parent );
+ mlt_properties properties = MLT_SERVICE_PROPERTIES( &self->parent );
- // Get the normalisation preference
- char *normalisation = mlt_environment( "MLT_NORMALISATION" );
-
- // Deal with normalisation
- if ( normalisation == NULL || strcmp( normalisation, "NTSC" ) )
- {
- mlt_properties_set( properties, "normalisation", "PAL" );
- mlt_properties_set_double( properties, "fps", 25.0 );
- mlt_properties_set_int( properties, "width", 720 );
- mlt_properties_set_int( properties, "height", 576 );
- mlt_properties_set_int( properties, "progressive", 0 );
- mlt_properties_set_double( properties, "aspect_ratio", 59.0 / 54.0 );
- }
- else
+ // Apply profile to properties
+ if ( profile == NULL )
{
- mlt_properties_set( properties, "normalisation", "NTSC" );
- mlt_properties_set_double( properties, "fps", 30000.0 / 1001.0 );
- mlt_properties_set_int( properties, "width", 720 );
- mlt_properties_set_int( properties, "height", 480 );
- mlt_properties_set_int( properties, "progressive", 0 );
- mlt_properties_set_double( properties, "aspect_ratio", 10.0 / 11.0 );
+ // 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( self );
+ mlt_properties_set_data( properties, "_profile", profile, 0, (mlt_destructor)mlt_profile_close, NULL );
}
+ apply_profile_properties( self, 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 );
+ mlt_properties_set_int( properties, "drop_max", 5 );
// Default audio frequency and channels
mlt_properties_set_int( properties, "frequency", 48000 );
mlt_properties_set( properties, "test_card", mlt_environment( "MLT_TEST_CARD" ) );
// Hmm - default all consumers to yuv422 :-/
- this->format = mlt_image_yuv422;
+ priv->format = mlt_image_yuv422;
+ mlt_properties_set( properties, "mlt_image_format", mlt_image_format_name( priv->format ) );
+ mlt_properties_set( properties, "mlt_audio_format", mlt_audio_format_name( mlt_audio_s16 ) );
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-thread-started", NULL );
+ mlt_events_register( properties, "consumer-thread-stopped", NULL );
mlt_events_register( properties, "consumer-stopped", NULL );
+ mlt_events_listen( properties, self, "consumer-frame-show", ( mlt_listener )on_consumer_frame_show );
+
+ // Register a property-changed listener to handle the profile property -
+ // subsequent properties can override the profile
+ priv->event_listener = mlt_events_listen( properties, self, "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 );
+ pthread_mutex_init( &priv->put_mutex, NULL );
+ pthread_cond_init( &priv->put_cond, NULL );
}
return error;
}
-static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args )
+/** Convert the profile into properties on the consumer.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ * \param profile a profile
+ * \param properties a properties list (typically, the consumer's)
+ */
+
+static void apply_profile_properties( mlt_consumer self, mlt_profile profile, mlt_properties properties )
+{
+ consumer_private *priv = self->local;
+ mlt_event_block( priv->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_properties_set_int( properties, "colorspace", profile->colorspace );
+ mlt_event_unblock( priv->event_listener );
+}
+
+/** The property-changed event listener
+ *
+ * \private \memberof mlt_consumer_s
+ * \param owner the events object
+ * \param self the consumer
+ * \param name the name of the property that changed
+ */
+
+static void mlt_consumer_property_changed( mlt_properties owner, mlt_consumer self, char *name )
+{
+ if ( !strcmp( name, "mlt_profile" ) )
+ {
+ // Get the properies
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+
+ // Get the current profile
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+
+ // 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 );
+ }
+ else
+ {
+ profile = new_profile;
+ }
+
+ // Apply to properties
+ apply_profile_properties( self, profile, properties );
+ mlt_profile_close( new_profile );
+ }
+ }
+ else if ( !strcmp( name, "frame_rate_num" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ 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( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ 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( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ profile->width = mlt_properties_get_int( properties, "width" );
+ }
+ else if ( !strcmp( name, "height" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ profile->height = mlt_properties_get_int( properties, "height" );
+ }
+ else if ( !strcmp( name, "progressive" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ profile->progressive = mlt_properties_get_int( properties, "progressive" );
+ }
+ else if ( !strcmp( name, "sample_aspect_num" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ {
+ profile->sample_aspect_num = mlt_properties_get_int( properties, "sample_aspect_num" );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
+ }
+ }
+ else if ( !strcmp( name, "sample_aspect_den" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ {
+ profile->sample_aspect_den = mlt_properties_get_int( properties, "sample_aspect_den" );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_profile_sar( profile ) );
+ }
+ }
+ else if ( !strcmp( name, "display_aspect_num" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ 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( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ 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 ) );
+ }
+ }
+ else if ( !strcmp( name, "colorspace" ) )
+ {
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ if ( profile )
+ profile->colorspace = mlt_properties_get_int( properties, "colorspace" );
+ }
+}
+
+/** 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 the events object that will be passed to \p listener
+ * \param self a service that will be passed to \p listener
+ * \param args an array of pointers - the first entry is passed as a frame to \p listener
+ */
+
+static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service self, void **args )
{
if ( listener != NULL )
- listener( owner, this, ( mlt_frame )args[ 0 ] );
+ listener( owner, self, ( 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 the events object that will be passed to \p listener
+ * \param self a service that will be passed to \p listener
+ * \param args an array of pointers - the first entry is passed as a frame to \p listener
+ */
+
+static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service self, void **args )
+{
+ if ( listener != NULL )
+ listener( owner, self, ( mlt_frame )args[ 0 ] );
+}
+
+/** A listener on the consumer-frame-show event
+ *
+ * Saves the position of the frame shown.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param owner the events object
+ * \param consumer the consumer on which this event occurred
+ * \param frame the frame that was shown
+ */
+
+static void on_consumer_frame_show( mlt_properties owner, mlt_consumer consumer, mlt_frame frame )
+{
+ if ( frame )
+ ( ( consumer_private*) consumer->local )->position = mlt_frame_get_position( frame );
}
/** 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_consumer mlt_consumer_new( mlt_profile profile )
{
// Create the memory for the structure
- mlt_consumer this = malloc( sizeof( struct mlt_consumer_s ) );
+ mlt_consumer self = malloc( sizeof( struct mlt_consumer_s ) );
// Initialise it
- if ( this != NULL )
- mlt_consumer_init( this, NULL );
-
- // Return it
- return this;
+ if ( self != NULL && mlt_consumer_init( self, NULL, profile ) == 0 )
+ {
+ // Return it
+ return self;
+ }
+ else
+ {
+ free(self);
+ return NULL;
+ }
}
/** Get the parent service object.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return the parent service class
+ * \see MLT_CONSUMER_SERVICE
+ */
-mlt_service mlt_consumer_service( mlt_consumer this )
+mlt_service mlt_consumer_service( mlt_consumer self )
{
- return this != NULL ? &this->parent : NULL;
+ return self != NULL ? &self->parent : NULL;
}
/** Get the consumer properties.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return the consumer's properties list
+ * \see MLT_CONSUMER_PROPERTIES
+ */
-mlt_properties mlt_consumer_properties( mlt_consumer this )
+mlt_properties mlt_consumer_properties( mlt_consumer self )
{
- return this != NULL ? mlt_service_properties( &this->parent ) : NULL;
+ return self != NULL ? MLT_SERVICE_PROPERTIES( &self->parent ) : NULL;
}
/** Connect the consumer to the producer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self 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 )
+int mlt_consumer_connect( mlt_consumer self, mlt_service producer )
{
- return mlt_service_connect_producer( &this->parent, producer, 0 );
+ return mlt_service_connect_producer( &self->parent, producer, 0 );
}
/** Start the consumer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return true if there was an error
+ */
-int mlt_consumer_start( mlt_consumer this )
+int mlt_consumer_start( mlt_consumer self )
{
+ if ( !mlt_consumer_is_stopped( self ) )
+ return 0;
+
+ consumer_private *priv = self->local;
+
+ // Stop listening to the property-changed event
+ mlt_event_block( priv->event_listener );
+
// Get the properies
- mlt_properties properties = mlt_consumer_properties( this );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
// 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;
+ pthread_mutex_lock( &priv->put_mutex );
+ priv->put = NULL;
+ priv->put_active = 1;
+ pthread_mutex_unlock( &priv->put_mutex );
// 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_producer producer = mlt_factory_producer( NULL, test_card );
+ mlt_profile profile = mlt_service_profile( MLT_CONSUMER_SERVICE( self ) );
+ 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_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 );
mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL );
}
+ // The profile could have changed between a stop and a restart.
+ apply_profile_properties( self, mlt_service_profile( MLT_CONSUMER_SERVICE(self) ), properties );
+
+ // Set the frame duration in microseconds for the frame-dropping heuristic
+ int frame_rate_num = mlt_properties_get_int( properties, "frame_rate_num" );
+ int frame_rate_den = mlt_properties_get_int( properties, "frame_rate_den" );
+ int frame_duration = 0;
+
+ if ( frame_rate_num && frame_rate_den )
+ {
+ frame_duration = 1000000 / frame_rate_num * frame_rate_den;
+ }
+
+ mlt_properties_set_int( properties, "frame_duration", frame_duration );
+
// Check and run an ante command
if ( mlt_properties_get( properties, "ante" ) )
- system( mlt_properties_get( properties, "ante" ) );
+ if ( system( mlt_properties_get( properties, "ante" ) ) == -1 )
+ mlt_log( MLT_CONSUMER_SERVICE( self ), 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" );
+ priv->real_time = mlt_properties_get_int( properties, "real_time" );
+
+ // For worker threads implementation, buffer must be at least # threads
+ if ( abs( priv->real_time ) > 1 && mlt_properties_get_int( properties, "buffer" ) <= abs( priv->real_time ) )
+ mlt_properties_set_int( properties, "_buffer", abs( priv->real_time ) + 1 );
+
+ // Get the image format to use for rendering threads
+ const char* format = mlt_properties_get( properties, "mlt_image_format" );
+ if ( format )
+ {
+ if ( !strcmp( format, "rgb24" ) )
+ priv->format = mlt_image_rgb24;
+ else if ( !strcmp( format, "rgb24a" ) )
+ priv->format = mlt_image_rgb24a;
+ else if ( !strcmp( format, "yuv420p" ) )
+ priv->format = mlt_image_yuv420p;
+ else if ( !strcmp( format, "none" ) )
+ priv->format = mlt_image_none;
+ else if ( !strcmp( format, "glsl" ) )
+ priv->format = mlt_image_glsl_texture;
+ else
+ priv->format = mlt_image_yuv422;
+ }
// Start the service
- if ( this->start != NULL )
- return this->start( this );
+ if ( self->start != NULL )
+ return self->start( self );
return 0;
}
-/** An alternative method to feed frames into the consumer - only valid if
- the consumer itself is not connected.
-*/
+/** An alternative method to feed frames into the consumer.
+ *
+ * Only valid if the consumer itself is not connected.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \param frame a frame
+ * \return true (ignore self for now)
+ */
-int mlt_consumer_put_frame( mlt_consumer this, mlt_frame frame )
+int mlt_consumer_put_frame( mlt_consumer self, mlt_frame frame )
{
int error = 1;
// Get the service assoicated to the consumer
- mlt_service service = mlt_consumer_service( this );
+ mlt_service service = MLT_CONSUMER_SERVICE( self );
if ( mlt_service_producer( service ) == NULL )
{
struct timeval now;
struct timespec tm;
- pthread_mutex_lock( &this->put_mutex );
- while ( !mlt_consumer_is_stopped( this ) && this->put != NULL )
+ consumer_private *priv = self->local;
+
+ pthread_mutex_lock( &priv->put_mutex );
+ while ( priv->put_active && priv->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 );
+ pthread_cond_timedwait( &priv->put_cond, &priv->put_mutex, &tm );
}
- if ( this->put == NULL )
- this->put = frame;
+ if ( priv->put_active && priv->put == NULL )
+ priv->put = frame;
else
mlt_frame_close( frame );
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_unlock( &this->put_mutex );
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
}
else
{
}
/** Protected method for consumer to get frames from connected service
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return a frame
+ */
-mlt_frame mlt_consumer_get_frame( mlt_consumer this )
+mlt_frame mlt_consumer_get_frame( mlt_consumer self )
{
// Frame to return
mlt_frame frame = NULL;
// Get the service assoicated to the consumer
- mlt_service service = mlt_consumer_service( this );
+ mlt_service service = MLT_CONSUMER_SERVICE( self );
// Get the consumer properties
- mlt_properties properties = mlt_consumer_properties( this );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
// 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 ( !mlt_consumer_is_stopped( this ) && this->put == NULL )
+ consumer_private *priv = self->local;
+
+ pthread_mutex_lock( &priv->put_mutex );
+ while ( priv->put_active && priv->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 );
+ pthread_cond_timedwait( &priv->put_cond, &priv->put_mutex, &tm );
}
- frame = this->put;
- this->put = NULL;
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_unlock( &this->put_mutex );
+ frame = priv->put;
+ priv->put = NULL;
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
if ( frame != NULL )
mlt_service_apply_filters( service, frame, 0 );
}
{
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 );
+ 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 );
if ( test_card != NULL )
mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL );
- // Attach the rescale property
+ // Pass along the interpolation and deinterlace options
+ // TODO: get rid of consumer_deinterlace and use profile.progressive
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" ) );
- if ( mlt_properties_get_int( properties, "progressive" ) || mlt_properties_get_int( properties, "deinterlace" ) )
- mlt_properties_set_int( frame_properties, "consumer_deinterlace", 1 );
+ 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" ) );
+ mlt_properties_set_int( frame_properties, "consumer_tff", mlt_properties_get_int( properties, "top_field_first" ) );
}
// 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;
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;
+ mlt_consumer self = arg;
+ consumer_private *priv = self->local;
// Get the properties of the consumer
- mlt_properties properties = mlt_consumer_properties( this );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
// Get the width and height
int width = mlt_properties_get_int( properties, "width" );
// 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;
+ mlt_audio_format afmt = mlt_audio_s16;
+ const char *format = mlt_properties_get( properties, "mlt_audio_format" );
+ if ( format )
+ {
+ if ( !strcmp( format, "none" ) )
+ afmt = mlt_audio_none;
+ else if ( !strcmp( format, "s32" ) )
+ afmt = mlt_audio_s32;
+ else if ( !strcmp( format, "s32le" ) )
+ afmt = mlt_audio_s32le;
+ else if ( !strcmp( format, "float" ) )
+ afmt = mlt_audio_float;
+ else if ( !strcmp( format, "f32le" ) )
+ afmt = mlt_audio_f32le;
+ else if ( !strcmp( format, "u8" ) )
+ afmt = mlt_audio_u8;
+ }
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;
+ void *audio = NULL;
// See if audio is turned off
int audio_off = mlt_properties_get_int( properties, "audio_off" );
struct timeval ante;
// Average time for get_frame and get_image
- int count = 1;
+ int count = 0;
int skipped = 0;
- int64_t time_wait = 0;
- int64_t time_frame = 0;
int64_t time_process = 0;
int skip_next = 0;
+ mlt_position pos = 0;
+ mlt_position start_pos = 0;
+ mlt_position last_pos = 0;
+ int frame_duration = mlt_properties_get_int( properties, "frame_duration" );
+ int drop_max = mlt_properties_get_int( properties, "drop_max" );
- // Get the first frame
- frame = mlt_consumer_get_frame( this );
+ if ( preview_off && preview_format != 0 )
+ priv->format = preview_format;
- // Get the image of the first frame
- if ( !video_off )
- mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
+ mlt_events_fire( properties, "consumer-thread-started", NULL );
- if ( !audio_off )
+ // Get the first frame
+ frame = mlt_consumer_get_frame( self );
+
+ if ( frame )
{
- samples = mlt_sample_calculator( fps, frequency, counter++ );
- mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
- frame->get_audio = NULL;
- }
+ // Get the image of the first frame
+ if ( !video_off )
+ {
+ mlt_events_fire( MLT_CONSUMER_PROPERTIES( self ), "consumer-frame-render", frame, NULL );
+ mlt_frame_get_image( frame, &image, &priv->format, &width, &height, 0 );
+ }
+
+ if ( !audio_off )
+ {
+ samples = mlt_sample_calculator( fps, frequency, counter++ );
+ mlt_frame_get_audio( frame, &audio, &afmt, &frequency, &channels, &samples );
+ }
- mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
+ // Mark as rendered
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
+ last_pos = start_pos = pos = mlt_frame_get_position( frame );
+ }
// Get the starting time (can ignore the times above)
gettimeofday( &ante, NULL );
// Continue to read ahead
- while ( this->ahead )
+ while ( priv->ahead )
{
// 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 );
+ pthread_mutex_lock( &priv->queue_mutex );
+ while( priv->ahead && mlt_deque_count( priv->queue ) >= buffer )
+ pthread_cond_wait( &priv->queue_cond, &priv->queue_mutex );
+ if ( priv->is_purge )
+ {
+ mlt_frame_close( frame );
+ priv->is_purge = 0;
+ }
+ else
+ {
+ mlt_deque_push_back( priv->queue, frame );
+ }
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
// Get the next frame
- frame = mlt_consumer_get_frame( this );
- time_frame += time_difference( &ante );
+ frame = mlt_consumer_get_frame( self );
// If there's no frame, we're probably stopped...
if ( frame == NULL )
continue;
+ pos = mlt_frame_get_position( frame );
- // Increment the count
+ // Increment the counter used for averaging processing cost
count ++;
- // All non normal playback frames should be shown
- if ( mlt_properties_get_int( mlt_frame_properties( frame ), "_speed" ) != 1 )
+ // All non-normal playback frames should be shown
+ if ( mlt_properties_get_int( MLT_FRAME_PROPERTIES( frame ), "_speed" ) != 1 )
{
- skipped = 0;
- time_frame = 0;
- time_process = 0;
- time_wait = 0;
- count = 1;
- skip_next = 0;
+#ifdef DEINTERLACE_ON_NOT_NORMAL_SPEED
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "consumer_deinterlace", 1 );
+#endif
+ // Indicate seeking or trick-play
+ start_pos = pos;
}
- // Get the image
- if ( !skip_next )
+ // If skip flag not set or frame-dropping disabled
+ if ( !skip_next || priv->real_time == -1 )
{
- // Get the image, mark as rendered and time it
if ( !video_off )
- mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 );
- mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
+ {
+ // Reset width/height - could have been changed by previous mlt_frame_get_image
+ width = mlt_properties_get_int( properties, "width" );
+ height = mlt_properties_get_int( properties, "height" );
+
+ // Get the image
+ mlt_events_fire( MLT_CONSUMER_PROPERTIES( self ), "consumer-frame-render", frame, NULL );
+ mlt_frame_get_image( frame, &image, &priv->format, &width, &height, 0 );
+ }
+
+ // Indicate the rendered image is available.
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
+
+ // Reset consecutively-skipped counter
+ skipped = 0;
}
- else
+ else // Skip image processing
{
- // Increment the number of sequentially skipped frames
- skipped ++;
- skip_next = 0;
+ // Increment the number of consecutively-skipped frames
+ skipped++;
- // If we've reached an unacceptable level, reset everything
- if ( skipped > 5 )
+ // If too many (1 sec) consecutively-skipped frames
+ if ( skipped > drop_max )
{
- skipped = 0;
- time_frame = 0;
+ // Reset cost tracker
time_process = 0;
- time_wait = 0;
count = 1;
+ mlt_log_verbose( self, "too many frames dropped - forcing next frame\n" );
}
}
if ( !audio_off )
{
samples = mlt_sample_calculator( fps, frequency, counter++ );
- mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples );
- frame->get_audio = NULL;
+ mlt_frame_get_audio( frame, &audio, &afmt, &frequency, &channels, &samples );
+ }
+
+ // Get the time to process this frame
+ int64_t time_current = time_difference( &ante );
+
+ // If the current time is not suddenly some large amount
+ if ( time_current < time_process / count * 20 || !time_process || count < 5 )
+ {
+ // Accumulate the cost for processing this frame
+ time_process += time_current;
+ }
+ else
+ {
+ mlt_log_debug( self, "current %"PRId64" threshold %"PRId64" count %d\n",
+ time_current, (int64_t) (time_process / count * 20), count );
+ // Ignore the cost of this frame's time
+ count--;
}
- // Increment the time take for this frame
- time_process += time_difference( &ante );
+ // Determine if we started, resumed, or seeked
+ if ( pos != last_pos + 1 )
+ start_pos = pos;
+ last_pos = pos;
- // 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;
+ // Do not skip the first 20% of buffer at start, resume, or seek
+ if ( pos - start_pos <= buffer / 5 + 1 )
+ {
+ // Reset cost tracker
+ time_process = 0;
+ count = 1;
+ }
+
+ // Reset skip flag
+ skip_next = 0;
+
+ // Only consider skipping if the buffer level is low (or really small)
+ if ( mlt_deque_count( priv->queue ) <= buffer / 5 + 1 )
+ {
+ // Skip next frame if average cost exceeds frame duration.
+ if ( time_process / count > frame_duration )
+ skip_next = 1;
+ if ( skip_next )
+ mlt_log_debug( self, "avg usec %"PRId64" (%"PRId64"/%d) duration %d\n",
+ time_process/count, time_process, count, frame_duration);
+ }
}
// Remove the last frame
mlt_frame_close( frame );
+ mlt_events_fire( properties, "consumer-thread-stopped", NULL );
return NULL;
}
-static void consumer_read_ahead_start( mlt_consumer this )
+/** Locate the first unprocessed frame in the queue.
+ *
+ * When playing with realtime behavior, we do not use the true head, but
+ * rather an adjusted process_head. The process_head is adjusted based on
+ * the rate of frame-dropping or recovery from frame-dropping. The idea is
+ * that as the level of frame-dropping increases to move the process_head
+ * closer to the tail because the frames are not completing processing prior
+ * to their playout! Then, as frames are not dropped the process_head moves
+ * back closer to the head of the queue so that worker threads can work
+ * ahead of the playout point (queue head).
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return an index into the queue
+ */
+
+static inline int first_unprocessed_frame( mlt_consumer self )
{
- pthread_attr_t thread_attributes;
-
+ consumer_private *priv = self->local;
+ int index = priv->real_time <= 0 ? 0 : priv->process_head;
+ while ( index < mlt_deque_count( priv->queue ) && MLT_FRAME( mlt_deque_peek( priv->queue, index ) )->is_processing )
+ index++;
+ return index;
+}
+
+/** The worker thread procedure for parallel processing frames.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param arg a consumer
+ */
+
+static void *consumer_worker_thread( void *arg )
+{
+ // The argument is the consumer
+ mlt_consumer self = arg;
+ consumer_private *priv = self->local;
+
+ // Get the properties of the consumer
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+
+ // Get the width and height
+ int width = mlt_properties_get_int( properties, "width" );
+ int height = mlt_properties_get_int( properties, "height" );
+ mlt_image_format format = priv->format;
+
+ // 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" );
+
+ // General frame variable
+ mlt_frame frame = NULL;
+ uint8_t *image = NULL;
+
+ if ( preview_off && preview_format != 0 )
+ format = preview_format;
+
+ mlt_events_fire( properties, "consumer-thread-started", NULL );
+
+ // Continue to read ahead
+ while ( priv->ahead )
+ {
+ // Get the next unprocessed frame from the work queue
+ pthread_mutex_lock( &priv->queue_mutex );
+ int index = first_unprocessed_frame( self );
+ while ( priv->ahead && index >= mlt_deque_count( priv->queue ) )
+ {
+ mlt_log_debug( MLT_CONSUMER_SERVICE(self), "waiting in worker index = %d queue count = %d\n",
+ index, mlt_deque_count( priv->queue ) );
+ pthread_cond_wait( &priv->queue_cond, &priv->queue_mutex );
+ index = first_unprocessed_frame( self );
+ }
+
+ // Mark the frame for processing
+ frame = mlt_deque_peek( priv->queue, index );
+ if ( frame )
+ {
+ mlt_log_debug( MLT_CONSUMER_SERVICE(self), "worker processing index = %d frame " MLT_POSITION_FMT " queue count = %d\n",
+ index, mlt_frame_get_position(frame), mlt_deque_count( priv->queue ) );
+ frame->is_processing = 1;
+ mlt_properties_inc_ref( MLT_FRAME_PROPERTIES( frame ) );
+ }
+ pthread_mutex_unlock( &priv->queue_mutex );
+
+ // If there's no frame, we're probably stopped...
+ if ( frame == NULL )
+ continue;
+
+#ifdef DEINTERLACE_ON_NOT_NORMAL_SPEED
+ // 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 );
+#endif
+
+ // Get the image
+ if ( !video_off )
+ {
+ // Fetch width/height again
+ width = mlt_properties_get_int( properties, "width" );
+ height = mlt_properties_get_int( properties, "height" );
+ mlt_events_fire( MLT_CONSUMER_PROPERTIES( self ), "consumer-frame-render", frame, NULL );
+ mlt_frame_get_image( frame, &image, &format, &width, &height, 0 );
+ }
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
+ mlt_frame_close( frame );
+
+ // Tell a waiting thread (non-realtime main consumer thread) that we are done.
+ pthread_mutex_lock( &priv->done_mutex );
+ pthread_cond_broadcast( &priv->done_cond );
+ pthread_mutex_unlock( &priv->done_mutex );
+ }
+ mlt_events_fire( properties, "consumer-thread-stopped", NULL );
+
+ return NULL;
+}
+
+/** Start the read/render thread.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ */
+
+static void consumer_read_ahead_start( mlt_consumer self )
+{
+ consumer_private *priv = self->local;
+
// We're running now
- this->ahead = 1;
+ priv->ahead = 1;
// Create the frame queue
- this->queue = mlt_deque_init( );
+ priv->queue = mlt_deque_init( );
- // Create the mutex
- pthread_mutex_init( &this->mutex, NULL );
+ // Create the queue mutex
+ pthread_mutex_init( &priv->queue_mutex, NULL );
// Create the condition
- pthread_cond_init( &this->cond, NULL );
+ pthread_cond_init( &priv->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( &priv->ahead_thread, &thread_attributes, consumer_read_ahead_thread, self ) < 0 )
+ pthread_create( &priv->ahead_thread, NULL, consumer_read_ahead_thread, self );
+ pthread_attr_destroy( &thread_attributes );
+ }
+ else
+ {
+ pthread_create( &priv->ahead_thread, NULL, consumer_read_ahead_thread, self );
+ }
+ priv->started = 1;
+}
- // Inherit the scheduling priority
- pthread_attr_init( &thread_attributes );
- pthread_attr_setinheritsched( &thread_attributes, PTHREAD_INHERIT_SCHED );
+/** Start the worker threads.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ */
+
+static void consumer_work_start( mlt_consumer self )
+{
+ consumer_private *priv = self->local;
+ int n = abs( priv->real_time );
+ pthread_t *thread = calloc( 1, sizeof( pthread_t ) * n );
+
+ // We're running now
+ priv->ahead = 1;
+ priv->threads = thread;
+
+ // These keep track of the accelleration of frame dropping or recovery.
+ priv->consecutive_dropped = 0;
+ priv->consecutive_rendered = 0;
- // Create the read ahead
- pthread_create( &this->ahead_thread, &thread_attributes, consumer_read_ahead_thread, this );
+ // 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.
+ priv->process_head = 0;
+
+ // Create the queues
+ priv->queue = mlt_deque_init();
+ priv->worker_threads = mlt_deque_init();
+
+ // Create the mutexes
+ pthread_mutex_init( &priv->queue_mutex, NULL );
+ pthread_mutex_init( &priv->done_mutex, NULL );
+
+ // Create the conditions
+ pthread_cond_init( &priv->queue_cond, NULL );
+ pthread_cond_init( &priv->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( priv->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( priv->worker_threads, thread );
+ thread++;
+ }
+ }
+ priv->started = 1;
}
-static void consumer_read_ahead_stop( mlt_consumer this )
+/** Stop the read/render thread.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ */
+
+static void consumer_read_ahead_stop( mlt_consumer self )
{
+ consumer_private *priv = self->local;
+
// Make sure we're running
- if ( this->ahead )
+// TODO improve support for atomic ops in general (see libavutil/atomic.h)
+#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+ if ( __sync_val_compare_and_swap( &priv->started, 1, 0 ) )
{
+#else
+ if ( priv->started )
+ {
+ priv->started = 0;
+#endif
// Inform thread to stop
- this->ahead = 0;
+ priv->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 );
+ pthread_mutex_lock( &priv->queue_mutex );
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_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 );
+ pthread_mutex_lock( &priv->put_mutex );
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
// Join the thread
- pthread_join( this->ahead_thread, NULL );
+ pthread_join( priv->ahead_thread, NULL );
- // Destroy the mutex
- pthread_mutex_destroy( &this->mutex );
+ // Destroy the frame queue mutex
+ pthread_mutex_destroy( &priv->queue_mutex );
// Destroy the condition
- pthread_cond_destroy( &this->cond );
+ pthread_cond_destroy( &priv->queue_cond );
// Wipe the queue
- while ( mlt_deque_count( this->queue ) )
- mlt_frame_close( mlt_deque_pop_back( this->queue ) );
+ while ( mlt_deque_count( priv->queue ) )
+ mlt_frame_close( mlt_deque_pop_back( priv->queue ) );
// Close the queue
- mlt_deque_close( this->queue );
+ mlt_deque_close( priv->queue );
}
}
-void mlt_consumer_purge( mlt_consumer this )
+/** Stop the worker threads.
+ *
+ * \private \memberof mlt_consumer_s
+ * \param self a consumer
+ */
+
+static void consumer_work_stop( mlt_consumer self )
{
- if ( this->ahead )
+ consumer_private *priv = self->local;
+
+ // Make sure we're running
+#ifdef __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4
+ if ( __sync_val_compare_and_swap( &priv->started, 1, 0 ) )
+ {
+#else
+ if ( priv->started )
{
- 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 );
+ priv->started = 0;
+#endif
+ // Inform thread to stop
+ priv->ahead = 0;
+
+ // Broadcast to the queue condition in case it's waiting
+ pthread_mutex_lock( &priv->queue_mutex );
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
+
+ // Broadcast to the put condition in case it's waiting
+ pthread_mutex_lock( &priv->put_mutex );
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
+
+ // Broadcast to the done condition in case it's waiting
+ pthread_mutex_lock( &priv->done_mutex );
+ pthread_cond_broadcast( &priv->done_cond );
+ pthread_mutex_unlock( &priv->done_mutex );
+
+ // Join the threads
+ pthread_t *thread;
+ while ( ( thread = mlt_deque_pop_back( priv->worker_threads ) ) )
+ pthread_join( *thread, NULL );
+
+ // Deallocate the array of threads
+ if ( priv->threads )
+ free( priv->threads );
+
+ // Destroy the mutexes
+ pthread_mutex_destroy( &priv->queue_mutex );
+ pthread_mutex_destroy( &priv->done_mutex );
+
+ // Destroy the conditions
+ pthread_cond_destroy( &priv->queue_cond );
+ pthread_cond_destroy( &priv->done_cond );
+
+ // Wipe the queues
+ while ( mlt_deque_count( priv->queue ) )
+ mlt_frame_close( mlt_deque_pop_back( priv->queue ) );
+
+ // Close the queues
+ mlt_deque_close( priv->queue );
+ mlt_deque_close( priv->worker_threads );
}
}
-mlt_frame mlt_consumer_rt_frame( mlt_consumer this )
+/** Flush the read/render thread's buffer.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ */
+
+void mlt_consumer_purge( mlt_consumer self )
+{
+ if ( self )
+ {
+ consumer_private *priv = self->local;
+
+ pthread_mutex_lock( &priv->put_mutex );
+ if ( priv->put ) {
+ mlt_frame_close( priv->put );
+ priv->put = NULL;
+ }
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
+
+ if ( priv->started && priv->real_time )
+ pthread_mutex_lock( &priv->queue_mutex );
+
+ if ( self->purge )
+ self->purge( self );
+
+ while ( priv->started && mlt_deque_count( priv->queue ) )
+ mlt_frame_close( mlt_deque_pop_back( priv->queue ) );
+ if ( priv->started && priv->real_time )
+ {
+ priv->is_purge = 1;
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
+ if ( abs( priv->real_time ) > 1 )
+ {
+ pthread_mutex_lock( &priv->done_mutex );
+ pthread_cond_broadcast( &priv->done_cond );
+ pthread_mutex_unlock( &priv->done_mutex );
+ }
+ }
+
+ pthread_mutex_lock( &priv->put_mutex );
+ if ( priv->put ) {
+ mlt_frame_close( priv->put );
+ priv->put = NULL;
+ }
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
+ }
+}
+
+/** Use multiple worker threads and a work queue.
+ */
+
+static mlt_frame worker_get_frame( mlt_consumer self, mlt_properties properties )
+{
+ // Frame to return
+ mlt_frame frame = NULL;
+ consumer_private *priv = self->local;
+ double fps = mlt_properties_get_double( properties, "fps" );
+ int threads = abs( priv->real_time );
+ int buffer = mlt_properties_get_int( properties, "_buffer" );
+ buffer = buffer > 0 ? buffer : mlt_properties_get_int( properties, "buffer" );
+ // This is a heuristic to determine a suitable minimum buffer size for the number of threads.
+ int headroom = 2 + threads * threads;
+ buffer = buffer < headroom ? headroom : buffer;
+
+ // Start worker threads if not already started.
+ if ( ! priv->ahead )
+ {
+ int prefill = mlt_properties_get_int( properties, "prefill" );
+ prefill = prefill > 0 && prefill < buffer ? prefill : buffer;
+
+ consumer_work_start( self );
+
+ // Fill the work queue.
+ int i = buffer;
+ while ( priv->ahead && i-- )
+ {
+ frame = mlt_consumer_get_frame( self );
+ if ( frame )
+ {
+ pthread_mutex_lock( &priv->queue_mutex );
+ mlt_deque_push_back( priv->queue, frame );
+ pthread_cond_signal( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
+ }
+ }
+
+ // Wait for prefill
+ while ( priv->ahead && first_unprocessed_frame( self ) < prefill )
+ {
+ pthread_mutex_lock( &priv->done_mutex );
+ pthread_cond_wait( &priv->done_cond, &priv->done_mutex );
+ pthread_mutex_unlock( &priv->done_mutex );
+ }
+ priv->process_head = threads;
+ }
+
+// mlt_log_verbose( MLT_CONSUMER_SERVICE(self), "size %d done count %d work count %d process_head %d\n",
+// threads, first_unprocessed_frame( self ), mlt_deque_count( priv->queue ), priv->process_head );
+
+ // Feed the work queue
+ while ( priv->ahead && mlt_deque_count( priv->queue ) < buffer )
+ {
+ frame = mlt_consumer_get_frame( self );
+ if ( frame )
+ {
+ pthread_mutex_lock( &priv->queue_mutex );
+ mlt_deque_push_back( priv->queue, frame );
+ pthread_cond_signal( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
+ }
+ }
+
+ // Wait if not realtime.
+ while ( priv->ahead && priv->real_time < 0 && !priv->is_purge &&
+ !( mlt_properties_get_int( MLT_FRAME_PROPERTIES( MLT_FRAME( mlt_deque_peek_front( priv->queue ) ) ), "rendered" ) ) )
+ {
+ pthread_mutex_lock( &priv->done_mutex );
+ pthread_cond_wait( &priv->done_cond, &priv->done_mutex );
+ pthread_mutex_unlock( &priv->done_mutex );
+ }
+
+ // Get the frame from the queue.
+ pthread_mutex_lock( &priv->queue_mutex );
+ frame = mlt_deque_pop_front( priv->queue );
+ pthread_mutex_unlock( &priv->queue_mutex );
+ if ( ! frame ) {
+ priv->is_purge = 0;
+ return frame;
+ }
+
+ // Adapt the worker process head to the runtime conditions.
+ if ( priv->real_time > 0 )
+ {
+ if ( mlt_properties_get_int( MLT_FRAME_PROPERTIES( frame ), "rendered" ) )
+ {
+ priv->consecutive_dropped = 0;
+ if ( priv->process_head > threads && priv->consecutive_rendered >= priv->process_head )
+ priv->process_head--;
+ else
+ priv->consecutive_rendered++;
+ }
+ else
+ {
+ priv->consecutive_rendered = 0;
+ if ( priv->process_head < buffer - threads && priv->consecutive_dropped > threads )
+ priv->process_head++;
+ else
+ priv->consecutive_dropped++;
+ }
+// mlt_log_verbose( MLT_CONSUMER_SERVICE(self), "dropped %d rendered %d process_head %d\n",
+// priv->consecutive_dropped, priv->consecutive_rendered, priv->process_head );
+
+ // Check for too many consecutively dropped frames
+ if ( priv->consecutive_dropped > mlt_properties_get_int( properties, "drop_max" ) )
+ {
+ int orig_buffer = mlt_properties_get_int( properties, "buffer" );
+ int prefill = mlt_properties_get_int( properties, "prefill" );
+ mlt_log_verbose( self, "too many frames dropped - " );
+
+ // If using a default low-latency buffer level (SDL) and below the limit
+ if ( ( orig_buffer == 1 || prefill == 1 ) && buffer < (threads + 1) * 10 )
+ {
+ // Auto-scale the buffer to compensate
+ mlt_log_verbose( self, "increasing buffer to %d\n", buffer + threads );
+ mlt_properties_set_int( properties, "_buffer", buffer + threads );
+ priv->consecutive_dropped = fps / 2;
+ }
+ else
+ {
+ // Tell the consumer to render it
+ mlt_log_verbose( self, "forcing next frame\n" );
+ mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 );
+ priv->consecutive_dropped = 0;
+ }
+ }
+ }
+ if ( priv->is_purge ) {
+ priv->is_purge = 0;
+ mlt_frame_close( frame );
+ frame = NULL;
+ }
+ return frame;
+}
+
+/** 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 self a consumer
+ * \return a frame
+ */
+
+mlt_frame mlt_consumer_rt_frame( mlt_consumer self )
{
// Frame to return
mlt_frame frame = NULL;
// Get the properties
- mlt_properties properties = mlt_consumer_properties( this );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ consumer_private *priv = self->local;
// Check if the user has requested real time or not
- if ( this->real_time )
+ if ( priv->real_time > 1 || priv->real_time < -1 )
+ {
+ // see above
+ return worker_get_frame( self, properties );
+ }
+ else if ( priv->real_time == 1 || priv->real_time == -1 )
{
int size = 1;
// Is the read ahead running?
- if ( this->ahead == 0 )
+ if ( priv->ahead == 0 )
{
int buffer = mlt_properties_get_int( properties, "buffer" );
int prefill = mlt_properties_get_int( properties, "prefill" );
- consumer_read_ahead_start( this );
+ consumer_read_ahead_start( self );
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 );
+ pthread_mutex_lock( &priv->queue_mutex );
+ while( priv->ahead && mlt_deque_count( priv->queue ) < size )
+ pthread_cond_wait( &priv->queue_cond, &priv->queue_mutex );
+ frame = mlt_deque_pop_front( priv->queue );
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
}
- else
+ else // real_time == 0
{
+ if ( !priv->ahead )
+ {
+ priv->ahead = 1;
+ mlt_events_fire( properties, "consumer-thread-started", NULL );
+ }
// Get the frame in non real time
- frame = mlt_consumer_get_frame( this );
+ frame = mlt_consumer_get_frame( self );
// This isn't true, but from the consumers perspective it is
if ( frame != NULL )
- mlt_properties_set_int( mlt_frame_properties( frame ), "rendered", 1 );
+ 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 self a consumer
+ */
-void mlt_consumer_stopped( mlt_consumer this )
+void mlt_consumer_stopped( mlt_consumer self )
{
- mlt_properties_set_int( mlt_consumer_properties( this ), "running", 0 );
- mlt_events_fire( mlt_consumer_properties( this ), "consumer-stopped", NULL );
+ mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( self ), "running", 0 );
+ mlt_events_fire( MLT_CONSUMER_PROPERTIES( self ), "consumer-stopped", NULL );
+ mlt_event_unblock( ( ( consumer_private* ) self->local )->event_listener );
}
/** Stop the consumer.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return true if there was an error
+ */
-int mlt_consumer_stop( mlt_consumer this )
+int mlt_consumer_stop( mlt_consumer self )
{
// Get the properies
- mlt_properties properties = mlt_consumer_properties( this );
+ mlt_properties properties = MLT_CONSUMER_PROPERTIES( self );
+ consumer_private *priv = self->local;
+
+ // Just in case...
+ mlt_log( MLT_CONSUMER_SERVICE( self ), MLT_LOG_DEBUG, "stopping put waiting\n" );
+ pthread_mutex_lock( &priv->put_mutex );
+ priv->put_active = 0;
+ pthread_cond_broadcast( &priv->put_cond );
+ pthread_mutex_unlock( &priv->put_mutex );
// Stop the consumer
- if ( this->stop != NULL )
- this->stop( this );
+ mlt_log( MLT_CONSUMER_SERVICE( self ), MLT_LOG_DEBUG, "stopping consumer\n" );
+
+ // Cancel the read ahead threads
+ priv->ahead = 0;
+ if ( priv->started )
+ {
+ // Unblock the consumer calling mlt_consumer_rt_frame
+ pthread_mutex_lock( &priv->queue_mutex );
+ pthread_cond_broadcast( &priv->queue_cond );
+ pthread_mutex_unlock( &priv->queue_mutex );
+ }
+
+ // Invoke the child callback
+ if ( self->stop != NULL )
+ self->stop( self );
// Check if the user has requested real time or not and stop if necessary
- if ( mlt_properties_get_int( properties, "real_time" ) )
- consumer_read_ahead_stop( this );
-
- // Just in case...
- pthread_mutex_lock( &this->put_mutex );
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_unlock( &this->put_mutex );
+ mlt_log( MLT_CONSUMER_SERVICE( self ), MLT_LOG_DEBUG, "stopping read_ahead\n" );
+ if ( abs( priv->real_time ) == 1 )
+ consumer_read_ahead_stop( self );
+ else if ( abs( priv->real_time ) > 1 )
+ consumer_work_stop( self );
// 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 (system( mlt_properties_get( properties, "post" ) ) == -1 )
+ mlt_log( MLT_CONSUMER_SERVICE( self ), MLT_LOG_ERROR, "system(%s) failed!\n", mlt_properties_get( properties, "post" ) );
- if ( this->put != NULL )
- {
- mlt_frame_close( this->put );
- this->put = NULL;
- }
+ mlt_log( MLT_CONSUMER_SERVICE( self ), MLT_LOG_DEBUG, "stopped\n" );
return 0;
}
/** Determine if the consumer is stopped.
-*/
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ * \return true if the consumer is stopped
+ */
-int mlt_consumer_is_stopped( mlt_consumer this )
+int mlt_consumer_is_stopped( mlt_consumer self )
{
// Check if the consumer is stopped
- if ( this->is_stopped != NULL )
- return this->is_stopped( this );
+ if ( self && self->is_stopped )
+ return self->is_stopped( self );
return 0;
}
-/** Close the consumer.
-*/
+/** Close and destroy the consumer.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param self a consumer
+ */
-void mlt_consumer_close( mlt_consumer this )
+void mlt_consumer_close( mlt_consumer self )
{
- if ( this != NULL && mlt_properties_dec_ref( mlt_consumer_properties( this ) ) <= 0 )
+ if ( self != NULL && mlt_properties_dec_ref( MLT_CONSUMER_PROPERTIES( self ) ) <= 0 )
{
// Get the childs close function
- void ( *consumer_close )( ) = this->close;
-
- // Make sure it only gets called once
- this->close = NULL;
- this->parent.close = NULL;
+ void ( *consumer_close )( ) = self->close;
- // Destroy the push mutex and condition
- pthread_cond_broadcast( &this->put_cond );
- pthread_mutex_destroy( &this->put_mutex );
- pthread_cond_destroy( &this->put_cond );
+ if ( consumer_close )
+ {
+ // Just in case...
+ //mlt_consumer_stop( self );
- // Call the childs close if available
- if ( consumer_close != NULL )
- consumer_close( this );
+ self->close = NULL;
+ consumer_close( self );
+ }
else
- mlt_service_close( &this->parent );
+ {
+ consumer_private *priv = self->local;
+
+ // Make sure it only gets called once
+ self->parent.close = NULL;
+
+ // Destroy the push mutex and condition
+ pthread_mutex_destroy( &priv->put_mutex );
+ pthread_cond_destroy( &priv->put_cond );
+
+ mlt_service_close( &self->parent );
+ free( priv );
+ }
}
}
+
+/** Get the position of the last frame shown.
+ *
+ * \public \memberof mlt_consumer_s
+ * \param consumer a consumer
+ * \return the position
+ */
+
+mlt_position mlt_consumer_position( mlt_consumer consumer )
+{
+ return ( ( consumer_private* ) consumer->local )->position;
+}
+
projects / mlt / blobdiff