X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_tractor.c;h=40c78215826772c5a9b32fb4832d044921aa3286;hb=f4963a6aa07644399b273b5d2b1f9299c9047414;hp=5e0caca72ebf9dcbe575ac6a288199b85a79ad9d;hpb=ec7f7d58e000242e918c2ae2cebd172bffe6e9d4;p=melted diff --git a/src/framework/mlt_tractor.c b/src/framework/mlt_tractor.c index 5e0caca..40c7821 100644 --- a/src/framework/mlt_tractor.c +++ b/src/framework/mlt_tractor.c @@ -1,54 +1,92 @@ -/* - * mlt_tractor.c -- tractor service class - * Copyright (C) 2003-2004 Ushodaya Enterprises Limited - * Author: Charles Yates +/** + * \file mlt_tractor.c + * \brief tractor service class + * \see mlt_tractor_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) 2003-2009 Ushodaya Enterprises Limited + * \author Charles Yates * - * 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_tractor.h" #include "mlt_frame.h" #include "mlt_multitrack.h" +#include "mlt_field.h" +#include "mlt_log.h" #include #include #include +#include -/** Private structure. +/* Forward references to static methods. */ -struct mlt_tractor_s -{ - struct mlt_producer_s parent; - mlt_service producer; -}; +static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track ); +static void mlt_tractor_listener( mlt_multitrack tracks, mlt_tractor this ); -/** Forward references to static methods. -*/ +/** Construct a tractor without a field or multitrack. + * + * Sets the resource property to "", the mlt_type to "mlt_producer", + * and mlt_service to "tractor". + * + * \public \memberof mlt_tractor_s + * \return the new tractor + */ -static int producer_get_frame( mlt_producer this, mlt_frame_ptr frame, int track ); -static void producer_close( mlt_producer this ); +mlt_tractor mlt_tractor_init( ) +{ + mlt_tractor this = calloc( sizeof( struct mlt_tractor_s ), 1 ); + if ( this != NULL ) + { + mlt_producer producer = &this->parent; + if ( mlt_producer_init( producer, this ) == 0 ) + { + mlt_properties properties = MLT_PRODUCER_PROPERTIES( producer ); -/** Constructor for the tractor. + mlt_properties_set( properties, "resource", "" ); + mlt_properties_set( properties, "mlt_type", "mlt_producer" ); + mlt_properties_set( properties, "mlt_service", "tractor" ); + mlt_properties_set_int( properties, "in", 0 ); + mlt_properties_set_int( properties, "out", -1 ); + mlt_properties_set_int( properties, "length", 0 ); - TODO: thread this service... -*/ + producer->get_frame = producer_get_frame; + producer->close = ( mlt_destructor )mlt_tractor_close; + producer->close_object = this; + } + else + { + free( this ); + this = NULL; + } + } + return this; +} -mlt_tractor mlt_tractor_init( ) +/** Construct a tractor as well as a field and multitrack. + * + * Sets the resource property to "", the mlt_type to "mlt_producer", + * and mlt_service to "tractor". + * + * \public \memberof mlt_tractor_s + * \return the new tractor + */ + +mlt_tractor mlt_tractor_new( ) { mlt_tractor this = calloc( sizeof( struct mlt_tractor_s ), 1 ); if ( this != NULL ) @@ -56,12 +94,24 @@ mlt_tractor mlt_tractor_init( ) mlt_producer producer = &this->parent; if ( mlt_producer_init( producer, this ) == 0 ) { - mlt_properties_set( mlt_producer_properties( producer ), "resource", "" ); - mlt_properties_set( mlt_producer_properties( producer ), "mlt_type", "mlt_producer" ); - mlt_properties_set( mlt_producer_properties( producer ), "mlt_service", "tractor" ); + mlt_multitrack multitrack = mlt_multitrack_init( ); + mlt_field field = mlt_field_new( multitrack, this ); + mlt_properties props = MLT_PRODUCER_PROPERTIES( producer ); + + mlt_properties_set( props, "resource", "" ); + mlt_properties_set( props, "mlt_type", "mlt_producer" ); + mlt_properties_set( props, "mlt_service", "tractor" ); + mlt_properties_set_position( props, "in", 0 ); + mlt_properties_set_position( props, "out", 0 ); + mlt_properties_set_position( props, "length", 0 ); + mlt_properties_set_data( props, "multitrack", multitrack, 0, ( mlt_destructor )mlt_multitrack_close, NULL ); + mlt_properties_set_data( props, "field", field, 0, ( mlt_destructor )mlt_field_close, NULL ); + + mlt_events_listen( MLT_MULTITRACK_PROPERTIES( multitrack ), this, "producer-changed", ( mlt_listener )mlt_tractor_listener ); producer->get_frame = producer_get_frame; - producer->close = producer_close; + producer->close = ( mlt_destructor )mlt_tractor_close; + producer->close_object = this; } else { @@ -73,35 +123,105 @@ mlt_tractor mlt_tractor_init( ) } /** Get the service object associated to the tractor. -*/ + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \return the parent service object + * \see MLT_TRACTOR_SERVICE + */ mlt_service mlt_tractor_service( mlt_tractor this ) { - return mlt_producer_service( &this->parent ); + return MLT_PRODUCER_SERVICE( &this->parent ); } /** Get the producer object associated to the tractor. -*/ + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \return the parent producer object + * \see MLT_TRACTOR_PRODUCER + */ mlt_producer mlt_tractor_producer( mlt_tractor this ) { - return &this->parent; + return this != NULL ? &this->parent : NULL; } /** Get the properties object associated to the tractor. -*/ + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \return the tractor's property list + * \see MLT_TRACTOR_PROPERTIES + */ mlt_properties mlt_tractor_properties( mlt_tractor this ) { - return mlt_producer_properties( &this->parent ); + return MLT_PRODUCER_PROPERTIES( &this->parent ); +} + +/** Get the field this tractor is harvesting. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \return a field or NULL if there is no field for this tractor + */ + +mlt_field mlt_tractor_field( mlt_tractor this ) +{ + return mlt_properties_get_data( MLT_TRACTOR_PROPERTIES( this ), "field", NULL ); +} + +/** Get the multitrack this tractor is pulling. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \return a multitrack or NULL if there is none + */ + +mlt_multitrack mlt_tractor_multitrack( mlt_tractor this ) +{ + return mlt_properties_get_data( MLT_TRACTOR_PROPERTIES( this ), "multitrack", NULL ); +} + +/** Ensure the tractors in/out points match the multitrack. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + */ + +void mlt_tractor_refresh( mlt_tractor this ) +{ + mlt_multitrack multitrack = mlt_tractor_multitrack( this ); + mlt_properties properties = MLT_MULTITRACK_PROPERTIES( multitrack ); + mlt_properties self = MLT_TRACTOR_PROPERTIES( this ); + mlt_events_block( properties, self ); + mlt_events_block( self, self ); + mlt_multitrack_refresh( multitrack ); + mlt_properties_set_position( self, "in", 0 ); + mlt_properties_set_position( self, "out", mlt_properties_get_position( properties, "out" ) ); + mlt_events_unblock( self, self ); + mlt_events_unblock( properties, self ); + mlt_properties_set_position( self, "length", mlt_properties_get_position( properties, "length" ) ); +} + +static void mlt_tractor_listener( mlt_multitrack tracks, mlt_tractor this ) +{ + mlt_tractor_refresh( this ); } /** Connect the tractor. -*/ + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \param producer a producer + * \return true on error + */ int mlt_tractor_connect( mlt_tractor this, mlt_service producer ) { - int ret = mlt_service_connect_producer( mlt_tractor_service( this ), producer, 0 ); + int ret = mlt_service_connect_producer( MLT_TRACTOR_SERVICE( this ), producer, 0 ); // This is the producer we're going to connect to if ( ret == 0 ) @@ -110,10 +230,95 @@ int mlt_tractor_connect( mlt_tractor this, mlt_service producer ) return ret; } -/** Get the next frame. +/** Set the producer for a specific track. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \param producer a producer + * \param index the 0-based track index + * \return true on error + */ - TODO: This should be reading a pump being populated by the thread... -*/ +int mlt_tractor_set_track( mlt_tractor this, mlt_producer producer, int index ) +{ + return mlt_multitrack_connect( mlt_tractor_multitrack( this ), producer, index ); +} + +/** Get the producer for a specific track. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + * \param index the 0-based track index + * \return the producer for track \p index + */ + +mlt_producer mlt_tractor_get_track( mlt_tractor this, int index ) +{ + return mlt_multitrack_track( mlt_tractor_multitrack( this ), index ); +} + +static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable ) +{ + uint8_t *data = NULL; + mlt_properties properties = MLT_FRAME_PROPERTIES( this ); + mlt_frame frame = mlt_frame_pop_service( this ); + mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame ); + mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale.interp" ) ); + mlt_properties_set_int( frame_properties, "resize_alpha", mlt_properties_get_int( properties, "resize_alpha" ) ); + mlt_properties_set_int( frame_properties, "distort", mlt_properties_get_int( properties, "distort" ) ); + mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "consumer_aspect_ratio" ) ); + mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "consumer_deinterlace" ) ); + mlt_properties_set( frame_properties, "deinterlace_method", mlt_properties_get( properties, "deinterlace_method" ) ); + mlt_properties_set_int( frame_properties, "normalised_width", mlt_properties_get_int( properties, "normalised_width" ) ); + mlt_properties_set_int( frame_properties, "normalised_height", mlt_properties_get_int( properties, "normalised_height" ) ); + mlt_frame_get_image( frame, buffer, format, width, height, writable ); + mlt_properties_set_data( properties, "image", *buffer, *width * *height * 2, NULL, NULL ); + mlt_properties_set_int( properties, "width", *width ); + mlt_properties_set_int( properties, "height", *height ); + mlt_properties_set_int( properties, "format", *format ); + mlt_properties_set_double( properties, "aspect_ratio", mlt_frame_get_aspect_ratio( frame ) ); + mlt_properties_set_int( properties, "progressive", mlt_properties_get_int( frame_properties, "progressive" ) ); + mlt_properties_set_int( properties, "distort", mlt_properties_get_int( frame_properties, "distort" ) ); + data = mlt_frame_get_alpha_mask( frame ); + mlt_properties_set_data( properties, "alpha", data, 0, NULL, NULL ); + return 0; +} + +static int producer_get_audio( mlt_frame this, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples ) +{ + mlt_properties properties = MLT_FRAME_PROPERTIES( this ); + mlt_frame frame = mlt_frame_pop_audio( this ); + mlt_frame_get_audio( frame, buffer, format, frequency, channels, samples ); + mlt_properties_set_data( properties, "audio", *buffer, 0, NULL, NULL ); + mlt_properties_set_int( properties, "frequency", *frequency ); + mlt_properties_set_int( properties, "channels", *channels ); + return 0; +} + +static void destroy_data_queue( void *arg ) +{ + if ( arg != NULL ) + { + // Assign the correct type + mlt_deque queue = arg; + + // Iterate through each item and destroy them + while ( mlt_deque_peek_front( queue ) != NULL ) + mlt_properties_close( mlt_deque_pop_back( queue ) ); + + // Close the deque + mlt_deque_close( queue ); + } +} + +/** Get the next frame. + * + * \private \memberof mlt_tractor_s + * \param parent the producer interface to the tractor + * \param[out] frame a frame by reference + * \param track the 0-based track index + * \return true on error + */ static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int track ) { @@ -123,67 +328,184 @@ static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int tra if ( track == 0 && this->producer != NULL ) { int i = 0; - int looking = 1; int done = 0; mlt_frame temp = NULL; - mlt_frame store[ 10 ]; int count = 0; + int image_count = 0; // Get the properties of the parent producer - mlt_properties properties = mlt_producer_properties( parent ); + mlt_properties properties = MLT_PRODUCER_PROPERTIES( parent ); // Try to obtain the multitrack associated to the tractor mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL ); - // If we don't have one, we're in trouble... + // Or a specific producer + mlt_producer producer = mlt_properties_get_data( properties, "producer", NULL ); + + // The output frame will hold the 'global' data feeds (ie: those which are targetted for the final frame) + mlt_deque data_queue = mlt_deque_init( ); + + // Determine whether this tractor feeds to the consumer or stops here + int global_feed = mlt_properties_get_int( properties, "global_feed" ); + + // If we don't have one, we're in trouble... if ( multitrack != NULL ) { - mlt_producer target = mlt_multitrack_producer( multitrack ); + // Used to garbage collect all frames + char label[ 30 ]; + + // Get the id of the tractor + char *id = mlt_properties_get( properties, "_unique_id" ); + + // Will be used to store the frame properties object + mlt_properties frame_properties = NULL; + + // We'll store audio and video frames to use here + mlt_frame audio = NULL; + mlt_frame video = NULL; + mlt_frame first_video = NULL; + + // Temporary properties + mlt_properties temp_properties = NULL; + + // Get the multitrack's producer + mlt_producer target = MLT_MULTITRACK_PRODUCER( multitrack ); mlt_producer_seek( target, mlt_producer_frame( parent ) ); mlt_producer_set_speed( target, mlt_producer_get_speed( parent ) ); - } - else - { - fprintf( stderr, "tractor without a multitrack!!\n" ); - } - // Loop through each of the tracks we're harvesting - for ( i = 0; !done; i ++ ) - { - // Get a frame from the producer - mlt_service_get_frame( this->producer, &temp, i ); + // We will create one frame and attach everything to it + *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); - // Check for last track - done = mlt_properties_get_int( mlt_frame_properties( temp ), "last_track" ); + // Get the properties of the frame + frame_properties = MLT_FRAME_PROPERTIES( *frame ); - // Handle the frame - if ( done && looking ) + // Loop through each of the tracks we're harvesting + for ( i = 0; !done; i ++ ) { - // Use this as output if we don't have one already - *frame = temp; + // Get a frame from the producer + mlt_service_get_frame( this->producer, &temp, i ); + + // Get the temporary properties + temp_properties = MLT_FRAME_PROPERTIES( temp ); + + // Check for last track + done = mlt_properties_get_int( temp_properties, "last_track" ); + + // Handle fx only tracks + if ( mlt_properties_get_int( temp_properties, "fx_cut" ) ) + { + int hide = ( video == NULL ? 1 : 0 ) | ( audio == NULL ? 2 : 0 ); + mlt_properties_set_int( temp_properties, "hide", hide ); + } + + // We store all frames with a destructor on the output frame + sprintf( label, "_%s_%d", id, count ++ ); + mlt_properties_set_data( frame_properties, label, temp, 0, ( mlt_destructor )mlt_frame_close, NULL ); + + // We want to append all 'final' feeds to the global queue + if ( !done && mlt_properties_get_data( temp_properties, "data_queue", NULL ) != NULL ) + { + // Move the contents of this queue on to the output frames data queue + mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "data_queue", NULL ); + mlt_deque temp = mlt_deque_init( ); + while ( global_feed && mlt_deque_count( sub_queue ) ) + { + mlt_properties p = mlt_deque_pop_back( sub_queue ); + if ( mlt_properties_get_int( p, "final" ) ) + mlt_deque_push_back( data_queue, p ); + else + mlt_deque_push_back( temp, p ); + } + while( mlt_deque_count( temp ) ) + mlt_deque_push_front( sub_queue, mlt_deque_pop_back( temp ) ); + mlt_deque_close( temp ); + } + + // Now do the same with the global queue but without the conditional behaviour + if ( mlt_properties_get_data( temp_properties, "global_queue", NULL ) != NULL ) + { + mlt_deque sub_queue = mlt_properties_get_data( MLT_FRAME_PROPERTIES( temp ), "global_queue", NULL ); + while ( mlt_deque_count( sub_queue ) ) + { + mlt_properties p = mlt_deque_pop_back( sub_queue ); + mlt_deque_push_back( data_queue, p ); + } + } + + // Pick up first video and audio frames + if ( !done && !mlt_frame_is_test_audio( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 2 ) ) + { + // Order of frame creation is starting to get problematic + if ( audio != NULL ) + { + mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), producer_get_audio ); + mlt_deque_push_front( MLT_FRAME_AUDIO_STACK( temp ), audio ); + } + audio = temp; + } + if ( !done && !mlt_frame_is_test_card( temp ) && !( mlt_properties_get_int( temp_properties, "hide" ) & 1 ) ) + { + if ( video != NULL ) + { + mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), producer_get_image ); + mlt_deque_push_front( MLT_FRAME_IMAGE_STACK( temp ), video ); + } + video = temp; + if ( first_video == NULL ) + first_video = temp; + + // Ensure that all frames know the aspect ratio of the background + mlt_properties_set_double( temp_properties, "output_ratio", + mlt_properties_get_double( MLT_FRAME_PROPERTIES( first_video ), "aspect_ratio" ) ); + + mlt_properties_set_int( MLT_FRAME_PROPERTIES( temp ), "image_count", ++ image_count ); + image_count = 1; + } } - else if ( ( !mlt_frame_is_test_card( temp ) || !mlt_frame_is_test_audio( temp ) ) && looking && - mlt_producer_frame( parent ) == mlt_frame_get_position( temp ) ) + + // Now stack callbacks + if ( audio != NULL ) + { + mlt_frame_push_audio( *frame, audio ); + mlt_frame_push_audio( *frame, producer_get_audio ); + } + + if ( video != NULL ) { - *frame = temp; - looking = 0; + mlt_properties video_properties = MLT_FRAME_PROPERTIES( first_video ); + mlt_frame_push_service( *frame, video ); + mlt_frame_push_service( *frame, producer_get_image ); + if ( global_feed ) + mlt_properties_set_data( frame_properties, "data_queue", data_queue, 0, NULL, NULL ); + mlt_properties_set_data( video_properties, "global_queue", data_queue, 0, destroy_data_queue, NULL ); + mlt_properties_set_int( frame_properties, "width", mlt_properties_get_int( video_properties, "width" ) ); + mlt_properties_set_int( frame_properties, "height", mlt_properties_get_int( video_properties, "height" ) ); + mlt_properties_set_int( frame_properties, "real_width", mlt_properties_get_int( video_properties, "real_width" ) ); + mlt_properties_set_int( frame_properties, "real_height", mlt_properties_get_int( video_properties, "real_height" ) ); + mlt_properties_set_int( frame_properties, "progressive", mlt_properties_get_int( video_properties, "progressive" ) ); + mlt_properties_set_double( frame_properties, "aspect_ratio", mlt_properties_get_double( video_properties, "aspect_ratio" ) ); + mlt_properties_set_int( frame_properties, "image_count", image_count ); } else { - // We store all other frames for now - store[ count ++ ] = temp; + destroy_data_queue( data_queue ); } - } - // Now place all the unused frames on to the properties (will be destroyed automatically) - while ( count -- ) + mlt_frame_set_position( *frame, mlt_producer_frame( parent ) ); + mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_audio", audio == NULL ); + mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_image", video == NULL ); + mlt_properties_set_data( MLT_FRAME_PROPERTIES( *frame ), "consumer_lock_service", this, 0, NULL, NULL ); + } + else if ( producer != NULL ) { - mlt_properties frame_properties = mlt_frame_properties( *frame ); - char label[ 30 ]; - sprintf( label, "tractor_%d", count ); - while ( mlt_properties_get_data( frame_properties, label, NULL ) != NULL ) - strcat( label, "+" ); - mlt_properties_set_data( frame_properties, label, store[ count ], 0, ( mlt_destructor )mlt_frame_close, NULL ); + mlt_producer_seek( producer, mlt_producer_frame( parent ) ); + mlt_producer_set_speed( producer, mlt_producer_get_speed( parent ) ); + mlt_service_get_frame( this->producer, frame, track ); + } + else + { + mlt_log( MLT_PRODUCER_SERVICE( parent ), MLT_LOG_ERROR, "tractor without a multitrack!!\n" ); + mlt_service_get_frame( this->producer, frame, track ); } // Prepare the next frame @@ -195,26 +517,24 @@ static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int tra else { // Generate a test card - *frame = mlt_frame_init( ); + *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); return 0; } } -/** Close the tractor. -*/ +/** Close the tractor and free its resources. + * + * \public \memberof mlt_tractor_s + * \param this a tractor + */ void mlt_tractor_close( mlt_tractor this ) { - this->parent.close = NULL; - mlt_producer_close( &this->parent ); - free( this ); -} - -/** Close the producer. -*/ - -void producer_close( mlt_producer this ) -{ - mlt_tractor_close( this->child ); + if ( this != NULL && mlt_properties_dec_ref( MLT_TRACTOR_PROPERTIES( this ) ) <= 0 ) + { + this->parent.close = NULL; + mlt_producer_close( &this->parent ); + free( this ); + } }