X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_tractor.c;fp=src%2Fframework%2Fmlt_tractor.c;h=0000000000000000000000000000000000000000;hb=17b5a97b9bbe00b442a58a5065498e67b497af09;hp=40c78215826772c5a9b32fb4832d044921aa3286;hpb=f4963a6aa07644399b273b5d2b1f9299c9047414;p=melted diff --git a/src/framework/mlt_tractor.c b/src/framework/mlt_tractor.c deleted file mode 100644 index 40c7821..0000000 --- a/src/framework/mlt_tractor.c +++ /dev/null @@ -1,540 +0,0 @@ -/** - * \file mlt_tractor.c - * \brief tractor service class - * \see mlt_tractor_s - * - * Copyright (C) 2003-2009 Ushodaya Enterprises Limited - * \author Charles Yates - * - * 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_tractor.h" -#include "mlt_frame.h" -#include "mlt_multitrack.h" -#include "mlt_field.h" -#include "mlt_log.h" - -#include -#include -#include -#include - -/* Forward references to static methods. -*/ - -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 ); - -/** 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 - */ - -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 ); - - 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 ); - - producer->get_frame = producer_get_frame; - producer->close = ( mlt_destructor )mlt_tractor_close; - producer->close_object = this; - } - else - { - free( this ); - this = NULL; - } - } - return this; -} - -/** 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 ) - { - mlt_producer producer = &this->parent; - if ( mlt_producer_init( producer, this ) == 0 ) - { - 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 = ( mlt_destructor )mlt_tractor_close; - producer->close_object = this; - } - else - { - free( this ); - this = NULL; - } - } - return this; -} - -/** 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 ); -} - -/** 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 != 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 ); -} - -/** 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 ); - - // This is the producer we're going to connect to - if ( ret == 0 ) - this->producer = producer; - - return ret; -} - -/** 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 - */ - -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 ) -{ - mlt_tractor this = parent->child; - - // We only respond to the first track requests - if ( track == 0 && this->producer != NULL ) - { - int i = 0; - int done = 0; - mlt_frame temp = NULL; - int count = 0; - int image_count = 0; - - // Get the properties of the parent producer - mlt_properties properties = MLT_PRODUCER_PROPERTIES( parent ); - - // Try to obtain the multitrack associated to the tractor - mlt_multitrack multitrack = mlt_properties_get_data( properties, "multitrack", NULL ); - - // Or a specific producer - mlt_producer producer = mlt_properties_get_data( properties, "producer", NULL ); - - // 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 ) - { - // Used to garbage collect all frames - char label[ 30 ]; - - // Get the id of the tractor - char *id = mlt_properties_get( properties, "_unique_id" ); - - // Will be used to store the frame properties object - mlt_properties frame_properties = NULL; - - // We'll store audio and video frames to use here - mlt_frame audio = NULL; - mlt_frame video = NULL; - mlt_frame first_video = NULL; - - // Temporary properties - mlt_properties temp_properties = NULL; - - // Get the multitrack's producer - mlt_producer target = MLT_MULTITRACK_PRODUCER( multitrack ); - mlt_producer_seek( target, mlt_producer_frame( parent ) ); - mlt_producer_set_speed( target, mlt_producer_get_speed( parent ) ); - - // We will create one frame and attach everything to it - *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); - - // Get the properties of the frame - frame_properties = MLT_FRAME_PROPERTIES( *frame ); - - // Loop through each of the tracks we're harvesting - for ( i = 0; !done; i ++ ) - { - // Get a frame from the producer - mlt_service_get_frame( 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; - } - } - - // Now stack callbacks - if ( audio != NULL ) - { - mlt_frame_push_audio( *frame, audio ); - mlt_frame_push_audio( *frame, producer_get_audio ); - } - - if ( video != NULL ) - { - mlt_properties video_properties = MLT_FRAME_PROPERTIES( first_video ); - mlt_frame_push_service( *frame, video ); - mlt_frame_push_service( *frame, producer_get_image ); - if ( global_feed ) - mlt_properties_set_data( frame_properties, "data_queue", data_queue, 0, NULL, NULL ); - mlt_properties_set_data( video_properties, "global_queue", data_queue, 0, destroy_data_queue, NULL ); - mlt_properties_set_int( frame_properties, "width", mlt_properties_get_int( video_properties, "width" ) ); - mlt_properties_set_int( frame_properties, "height", mlt_properties_get_int( video_properties, "height" ) ); - mlt_properties_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 - { - destroy_data_queue( data_queue ); - } - - mlt_frame_set_position( *frame, mlt_producer_frame( parent ) ); - mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_audio", audio == NULL ); - mlt_properties_set_int( MLT_FRAME_PROPERTIES( *frame ), "test_image", video == NULL ); - mlt_properties_set_data( MLT_FRAME_PROPERTIES( *frame ), "consumer_lock_service", this, 0, NULL, NULL ); - } - else if ( producer != NULL ) - { - mlt_producer_seek( producer, mlt_producer_frame( parent ) ); - mlt_producer_set_speed( producer, mlt_producer_get_speed( parent ) ); - mlt_service_get_frame( 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 - mlt_producer_prepare_next( parent ); - - // Indicate our found status - return 0; - } - else - { - // Generate a test card - *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( parent ) ); - return 0; - } -} - -/** Close the tractor and free its resources. - * - * \public \memberof mlt_tractor_s - * \param this a tractor - */ - -void mlt_tractor_close( mlt_tractor this ) -{ - if ( this != NULL && mlt_properties_dec_ref( MLT_TRACTOR_PROPERTIES( this ) ) <= 0 ) - { - this->parent.close = NULL; - mlt_producer_close( &this->parent ); - free( this ); - } -} -