X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fframework%2Fmlt_consumer.c;h=1aab394c9d6c21bef9ff7754280dfb893d6a0809;hb=bf3264b9e340ba5c11cbf59835a8af3db94e0cc2;hp=8d79fc7d6eb6c7231d739c308d2ada68201b8690;hpb=037e09bc7cd1c94c73f200d2583dee5a786da810;p=melted diff --git a/src/framework/mlt_consumer.c b/src/framework/mlt_consumer.c index 8d79fc7..1aab394 100644 --- a/src/framework/mlt_consumer.c +++ b/src/framework/mlt_consumer.c @@ -3,19 +3,19 @@ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Charles Yates * - * 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. + * 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 program is distributed in the hope that it will be useful, + * 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" @@ -26,6 +26,10 @@ #include #include #include +#include + +static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args ); +static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args ); /** Public final methods */ @@ -39,42 +43,110 @@ int mlt_consumer_init( mlt_consumer this, void *child ) if ( error == 0 ) { // Get the properties from the service - mlt_properties properties = mlt_service_properties( &this->parent ); + mlt_properties properties = MLT_SERVICE_PROPERTIES( &this->parent ); // Get the normalisation preference - char *normalisation = getenv( "MLT_NORMALISATION" ); + 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, "frame_rate_num", 25 ); + mlt_properties_set_int( properties, "frame_rate_den", 1 ); 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 ); + mlt_properties_set_int( properties, "aspect_ratio_num", 59 ); + mlt_properties_set_int( properties, "aspect_ratio_den", 54 ); + mlt_properties_set_double( properties, "display_ratio", 4.0 / 3.0 ); + mlt_properties_set_int( properties, "display_ratio_num", 4 ); + mlt_properties_set_int( properties, "display_ratio_den", 3 ); } else { mlt_properties_set( properties, "normalisation", "NTSC" ); mlt_properties_set_double( properties, "fps", 30000.0 / 1001.0 ); + mlt_properties_set_int( properties, "frame_rate_num", 30000 ); + mlt_properties_set_int( properties, "frame_rate_den", 1001 ); 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 ); + mlt_properties_set_int( properties, "aspect_ratio_num", 10 ); + mlt_properties_set_int( properties, "aspect_ratio_den", 11 ); + mlt_properties_set_double( properties, "display_ratio", 4.0 / 3.0 ); + mlt_properties_set_int( properties, "display_ratio_num", 4 ); + mlt_properties_set_int( properties, "display_ratio_den", 3 ); } - mlt_properties_set_double( properties, "aspect_ratio", 4.0 / 3.0 ); // Default rescaler for all consumers mlt_properties_set( properties, "rescale", "bilinear" ); + + // Default read ahead buffer size + mlt_properties_set_int( properties, "buffer", 25 ); + + // Default audio frequency and channels + mlt_properties_set_int( properties, "frequency", 48000 ); + mlt_properties_set_int( properties, "channels", 2 ); + + // Default of all consumers is real time + mlt_properties_set_int( properties, "real_time", 1 ); + + // Default to environment test card + mlt_properties_set( properties, "test_card", mlt_environment( "MLT_TEST_CARD" ) ); + + // Hmm - default all consumers to yuv422 :-/ + this->format = mlt_image_yuv422; + + mlt_events_register( properties, "consumer-frame-show", ( mlt_transmitter )mlt_consumer_frame_show ); + mlt_events_register( properties, "consumer-frame-render", ( mlt_transmitter )mlt_consumer_frame_render ); + mlt_events_register( properties, "consumer-stopped", NULL ); + + // Create the push mutex and condition + pthread_mutex_init( &this->put_mutex, NULL ); + pthread_cond_init( &this->put_cond, NULL ); + } return error; } +static void mlt_consumer_frame_show( mlt_listener listener, mlt_properties owner, mlt_service this, void **args ) +{ + if ( listener != NULL ) + listener( owner, this, ( mlt_frame )args[ 0 ] ); +} + +static void mlt_consumer_frame_render( mlt_listener listener, mlt_properties owner, mlt_service this, void **args ) +{ + if ( listener != NULL ) + listener( owner, this, ( mlt_frame )args[ 0 ] ); +} + +/** Create a new consumer. +*/ + +mlt_consumer mlt_consumer_new( ) +{ + // Create the memory for the structure + mlt_consumer this = malloc( sizeof( struct mlt_consumer_s ) ); + + // Initialise it + if ( this != NULL ) + mlt_consumer_init( this, NULL ); + + // Return it + return this; +} + /** Get the parent service object. */ mlt_service mlt_consumer_service( mlt_consumer this ) { - return &this->parent; + return this != NULL ? &this->parent : NULL; } /** Get the consumer properties. @@ -82,7 +154,7 @@ mlt_service mlt_consumer_service( mlt_consumer this ) mlt_properties mlt_consumer_properties( mlt_consumer this ) { - return mlt_service_properties( &this->parent ); + return this != NULL ? MLT_SERVICE_PROPERTIES( &this->parent ) : NULL; } /** Connect the consumer to the producer. @@ -99,35 +171,59 @@ int mlt_consumer_connect( mlt_consumer this, mlt_service producer ) int mlt_consumer_start( mlt_consumer this ) { // Get the properies - mlt_properties properties = mlt_consumer_properties( this ); + mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Determine if there's a test card producer char *test_card = mlt_properties_get( properties, "test_card" ); + // Handle profiles + char *profile = mlt_properties_get( properties, "profile" ); + int profile_ok = mlt_consumer_profile( properties, profile ); + + // Check that everything is OK + if ( !profile_ok ) + fprintf( stderr, "Unrecognised profile %s - continuing with defaults.\n", mlt_properties_get( properties, "profile" ) ); + else if ( profile_ok < 0 ) + fprintf( stderr, "Recognised profile %s with warnings - trying to continue with some defaults.\n", mlt_properties_get( properties, "profile" ) ); + + // Just to make sure nothing is hanging around... + mlt_frame_close( this->put ); + this->put = NULL; + this->put_active = 1; + // Deal with it now. if ( test_card != NULL ) { if ( mlt_properties_get_data( properties, "test_card_producer", NULL ) == NULL ) { // Create a test card producer - // TODO: do we want to use fezzik here? - mlt_producer producer = mlt_factory_producer( "fezzik", test_card ); + mlt_producer producer = mlt_factory_producer( 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 ); } - - // Check and run an ante command - if ( mlt_properties_get( properties, "ante" ) ) - system( mlt_properties_get( properties, "ante" ) ); } } + else + { + // Allow the hash table to speed things up + mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL ); + } + + // Check and run an ante command + if ( mlt_properties_get( properties, "ante" ) ) + system( mlt_properties_get( properties, "ante" ) ); + + // Set the real_time preference + this->real_time = mlt_properties_get_int( properties, "real_time" ); // Start the service if ( this->start != NULL ) @@ -136,7 +232,45 @@ int mlt_consumer_start( mlt_consumer this ) return 0; } -/** Protected method :-/ for consumer to get frames from connected service +/** An alternative method to feed frames into the consumer - only valid if + the consumer itself is not connected. +*/ + +int mlt_consumer_put_frame( mlt_consumer this, mlt_frame frame ) +{ + int error = 1; + + // Get the service assoicated to the consumer + mlt_service service = MLT_CONSUMER_SERVICE( this ); + + if ( mlt_service_producer( service ) == NULL ) + { + struct timeval now; + struct timespec tm; + pthread_mutex_lock( &this->put_mutex ); + while ( this->put_active && this->put != NULL ) + { + gettimeofday( &now, NULL ); + tm.tv_sec = now.tv_sec + 1; + tm.tv_nsec = now.tv_usec * 1000; + pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm ); + } + if ( this->put_active && this->put == NULL ) + this->put = frame; + else + mlt_frame_close( frame ); + pthread_cond_broadcast( &this->put_cond ); + pthread_mutex_unlock( &this->put_mutex ); + } + else + { + mlt_frame_close( frame ); + } + + return error; +} + +/** Protected method for consumer to get frames from connected service */ mlt_frame mlt_consumer_get_frame( mlt_consumer this ) @@ -145,48 +279,561 @@ mlt_frame mlt_consumer_get_frame( mlt_consumer this ) mlt_frame frame = NULL; // Get the service assoicated to the consumer - mlt_service service = mlt_consumer_service( this ); + mlt_service service = MLT_CONSUMER_SERVICE( this ); + + // Get the consumer properties + mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); // Get the frame - if ( mlt_service_get_frame( service, &frame, 0 ) == 0 ) + if ( mlt_service_producer( service ) == NULL && mlt_properties_get_int( properties, "put_mode" ) ) + { + struct timeval now; + struct timespec tm; + pthread_mutex_lock( &this->put_mutex ); + while ( this->put_active && this->put == NULL ) + { + gettimeofday( &now, NULL ); + tm.tv_sec = now.tv_sec + 1; + tm.tv_nsec = now.tv_usec * 1000; + pthread_cond_timedwait( &this->put_cond, &this->put_mutex, &tm ); + } + frame = this->put; + this->put = NULL; + pthread_cond_broadcast( &this->put_cond ); + pthread_mutex_unlock( &this->put_mutex ); + if ( frame != NULL ) + mlt_service_apply_filters( service, frame, 0 ); + } + else if ( mlt_service_producer( service ) != NULL ) + { + mlt_service_get_frame( service, &frame, 0 ); + } + else { - // Get the consumer properties - mlt_properties properties = mlt_consumer_properties( this ); + frame = mlt_frame_init( ); + } + if ( frame != NULL ) + { // Get the frame properties - mlt_properties frame_properties = mlt_frame_properties( frame ); + mlt_properties frame_properties = MLT_FRAME_PROPERTIES( frame ); - // Attach the test frame producer to it. + // Get the test card producer mlt_producer test_card = mlt_properties_get_data( properties, "test_card_producer", NULL ); - mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL ); + + // Attach the test frame producer to it. + if ( test_card != NULL ) + mlt_properties_set_data( frame_properties, "test_card_producer", test_card, 0, NULL, NULL ); // Attach the rescale property - if ( mlt_properties_get( properties, "rescale" ) != NULL ) - mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) ); + mlt_properties_set( frame_properties, "rescale.interp", mlt_properties_get( properties, "rescale" ) ); // Aspect ratio and other jiggery pokery mlt_properties_set_double( frame_properties, "consumer_aspect_ratio", mlt_properties_get_double( properties, "aspect_ratio" ) ); - mlt_properties_set_int( frame_properties, "consumer_progressive", mlt_properties_get_int( properties, "progressive" ) ); - mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "deinterlace" ) ); - + mlt_properties_set_int( frame_properties, "consumer_deinterlace", mlt_properties_get_int( properties, "progressive" ) | mlt_properties_get_int( properties, "deinterlace" ) ); + mlt_properties_set( frame_properties, "deinterlace_method", mlt_properties_get( properties, "deinterlace_method" ) ); } // Return the frame return frame; } +static inline long time_difference( struct timeval *time1 ) +{ + struct timeval time2; + time2.tv_sec = time1->tv_sec; + time2.tv_usec = time1->tv_usec; + gettimeofday( time1, NULL ); + return time1->tv_sec * 1000000 + time1->tv_usec - time2.tv_sec * 1000000 - time2.tv_usec; +} + +int mlt_consumer_profile( mlt_properties properties, char *profile ) +{ + double fps = mlt_properties_get_double( properties, "fps" ); + int recognised = 1; + double display_num = 0; + double display_den = 0; + double pixel_num = 0; + double pixel_den = 0; + int width = 0; + int height = 0; + + if ( fps == 25.0 && profile != NULL ) + { + width = 720; + height = 576; + display_num = 4; + display_den = 3; + pixel_num = 59; + pixel_den = 54; + + if ( !strcmp( profile, "dv_wide" ) ) + { + display_num = 16; + display_den = 9; + pixel_num = 118; + pixel_den = 81; + } + else if ( !strncmp( profile, "square_wide", 11 ) ) + { + display_num = 16; + display_den = 9; + pixel_num = 1; + pixel_den = 1; + width = 1024; + height = 576; + } + else if ( !strncmp( profile, "square", 6 ) ) + { + pixel_num = 1; + pixel_den = 1; + width = 768; + height = 576; + } + else if ( !strncmp( profile, "vcd", 3 ) ) + { + width = 352; + height = 288; + } + else if ( !strncmp( profile, "cvd", 3 ) ) + { + width = 352; + height = 576; + pixel_num = 59; + pixel_den = 27; + } + else if ( !strncmp( profile, "svcd_wide", 9 ) ) + { + width = 480; + height = 576; + pixel_num = 59; + pixel_den = 27; + display_num = 16; + display_den = 9; + } + else if ( !strncmp( profile, "svcd", 4 ) ) + { + width = 480; + height = 576; + pixel_num = 59; + pixel_den = 36; + } + else if ( strncmp( profile, "frame", 5 ) && strcmp( profile, "dv" ) ) + { + recognised = 0; + } + } + else if ( profile != NULL ) + { + width = 720; + height = 480; + display_num = 4; + display_den = 3; + pixel_num = 10; + pixel_den = 11; + + if ( !strcmp( profile, "dv_wide" ) ) + { + display_num = 16; + display_den = 9; + pixel_num = 40; + pixel_den = 33; + } + else if ( !strncmp( profile, "square_wide", 11 ) ) + { + display_num = 16; + display_den = 9; + pixel_num = 1; + pixel_den = 1; + width = 854; + height = 480; + } + else if ( !strncmp( profile, "square", 6 ) ) + { + pixel_num = 1; + pixel_den = 1; + width = 640; + height = 480; + } + else if ( !strncmp( profile, "vcd", 3 ) ) + { + width = 352; + height = 240; + } + else if ( !strncmp( profile, "cvd", 3 ) ) + { + width = 352; + height = 480; + pixel_num = 20; + pixel_den = 11; + } + else if ( !strncmp( profile, "svcd_wide", 9 ) ) + { + width = 480; + height = 480; + pixel_num = 20; + pixel_den = 11; + display_num = 16; + display_den = 9; + } + else if ( !strncmp( profile, "svcd", 4 ) ) + { + width = 480; + height = 480; + pixel_num = 15; + pixel_den = 11; + } + else if ( strncmp( profile, "frame", 5 ) && strcmp( profile, "dv" ) ) + { + recognised = 0; + } + } + + // If width (or any of the above are 0), we use defaults otherwise we switch to recognised + if ( width != 0 && recognised ) + { + if ( recognised && strchr( profile, ':' ) ) + if ( sscanf( strchr( profile, ':' ) + 1, "%dx%d", &width, &height ) != 2 ) + recognised = -1; + + mlt_properties_set_int( properties, "width", width ); + mlt_properties_set_int( properties, "height", height ); + mlt_properties_set_double( properties, "aspect_ratio", pixel_num / pixel_den ); + mlt_properties_set_int( properties, "aspect_ratio_num", pixel_num ); + mlt_properties_set_int( properties, "aspect_ratio_den", pixel_den ); + mlt_properties_set_double( properties, "display_ratio", display_num / display_den ); + mlt_properties_set_int( properties, "display_ratio_num", display_num ); + mlt_properties_set_int( properties, "display_ratio_den", display_den ); + } + + return recognised; +} + +static void *consumer_read_ahead_thread( void *arg ) +{ + // The argument is the consumer + mlt_consumer this = arg; + + // Get the properties of the consumer + mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); + + // Get the width and height + int width = mlt_properties_get_int( properties, "width" ); + int height = mlt_properties_get_int( properties, "height" ); + + // See if video is turned off + int video_off = mlt_properties_get_int( properties, "video_off" ); + int preview_off = mlt_properties_get_int( properties, "preview_off" ); + int preview_format = mlt_properties_get_int( properties, "preview_format" ); + + // Get the audio settings + mlt_audio_format afmt = mlt_audio_pcm; + int counter = 0; + double fps = mlt_properties_get_double( properties, "fps" ); + int channels = mlt_properties_get_int( properties, "channels" ); + int frequency = mlt_properties_get_int( properties, "frequency" ); + int samples = 0; + int16_t *pcm = NULL; + + // See if audio is turned off + int audio_off = mlt_properties_get_int( properties, "audio_off" ); + + // Get the maximum size of the buffer + int buffer = mlt_properties_get_int( properties, "buffer" ) + 1; + + // General frame variable + mlt_frame frame = NULL; + uint8_t *image = NULL; + + // Time structures + struct timeval ante; + + // Average time for get_frame and get_image + int count = 1; + int skipped = 0; + int64_t time_wait = 0; + int64_t time_frame = 0; + int64_t time_process = 0; + int skip_next = 0; + mlt_service lock_object = NULL; + + if ( preview_off && preview_format != 0 ) + this->format = preview_format; + + // Get the first frame + frame = mlt_consumer_get_frame( this ); + + // Get the lock object + lock_object = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "consumer_lock_service", NULL ); + + // Lock it + if ( lock_object ) mlt_service_lock( lock_object ); + + // Get the image of the first frame + if ( !video_off ) + { + mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-frame-render", frame, NULL ); + mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 ); + } + + if ( !audio_off ) + { + samples = mlt_sample_calculator( fps, frequency, counter++ ); + mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples ); + } + + // Unlock the lock object + if ( lock_object ) mlt_service_unlock( lock_object ); + + // Mark as rendered + mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 ); + + // Get the starting time (can ignore the times above) + gettimeofday( &ante, NULL ); + + // Continue to read ahead + while ( this->ahead ) + { + // Fetch width/height again + width = mlt_properties_get_int( properties, "width" ); + height = mlt_properties_get_int( properties, "height" ); + + // Put the current frame into the queue + pthread_mutex_lock( &this->mutex ); + while( this->ahead && mlt_deque_count( this->queue ) >= buffer ) + pthread_cond_wait( &this->cond, &this->mutex ); + mlt_deque_push_back( this->queue, frame ); + pthread_cond_broadcast( &this->cond ); + pthread_mutex_unlock( &this->mutex ); + + time_wait += time_difference( &ante ); + + // Get the next frame + frame = mlt_consumer_get_frame( this ); + time_frame += time_difference( &ante ); + + // If there's no frame, we're probably stopped... + if ( frame == NULL ) + continue; + + // Attempt to fetch the lock object + lock_object = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "consumer_lock_service", NULL ); + + // Increment the count + count ++; + + // Lock if there's a lock object + if ( lock_object ) mlt_service_lock( lock_object ); + + // All non normal playback frames should be shown + if ( mlt_properties_get_int( MLT_FRAME_PROPERTIES( frame ), "_speed" ) != 1 ) + { + mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "consumer_deinterlace", 1 ); + skipped = 0; + time_frame = 0; + time_process = 0; + time_wait = 0; + count = 1; + skip_next = 0; + } + + // Get the image + if ( !skip_next ) + { + // Get the image, mark as rendered and time it + if ( !video_off ) + { + mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-frame-render", frame, NULL ); + mlt_frame_get_image( frame, &image, &this->format, &width, &height, 0 ); + } + mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 ); + } + else + { + // Increment the number of sequentially skipped frames + skipped ++; + skip_next = 0; + + // If we've reached an unacceptable level, reset everything + if ( skipped > 5 ) + { + skipped = 0; + time_frame = 0; + time_process = 0; + time_wait = 0; + count = 1; + } + } + + // Always process audio + if ( !audio_off ) + { + samples = mlt_sample_calculator( fps, frequency, counter++ ); + mlt_frame_get_audio( frame, &pcm, &afmt, &frequency, &channels, &samples ); + } + + // Increment the time take for this frame + time_process += time_difference( &ante ); + + // Determine if the next frame should be skipped + if ( mlt_deque_count( this->queue ) <= 5 && ( ( time_wait + time_frame + time_process ) / count ) > 40000 ) + skip_next = 1; + + // Unlock if there's a lock object + if ( lock_object ) mlt_service_unlock( lock_object ); + } + + // Remove the last frame + mlt_frame_close( frame ); + + return NULL; +} + +static void consumer_read_ahead_start( mlt_consumer this ) +{ + // We're running now + this->ahead = 1; + + // Create the frame queue + this->queue = mlt_deque_init( ); + + // Create the mutex + pthread_mutex_init( &this->mutex, NULL ); + + // Create the condition + pthread_cond_init( &this->cond, NULL ); + + // Create the read ahead + pthread_create( &this->ahead_thread, NULL, consumer_read_ahead_thread, this ); +} + +static void consumer_read_ahead_stop( mlt_consumer this ) +{ + // Make sure we're running + if ( this->ahead ) + { + // Inform thread to stop + this->ahead = 0; + + // Broadcast to the condition in case it's waiting + pthread_mutex_lock( &this->mutex ); + pthread_cond_broadcast( &this->cond ); + pthread_mutex_unlock( &this->mutex ); + + // Broadcast to the put condition in case it's waiting + pthread_mutex_lock( &this->put_mutex ); + pthread_cond_broadcast( &this->put_cond ); + pthread_mutex_unlock( &this->put_mutex ); + + // Join the thread + pthread_join( this->ahead_thread, NULL ); + + // Destroy the mutex + pthread_mutex_destroy( &this->mutex ); + + // Destroy the condition + pthread_cond_destroy( &this->cond ); + + // Wipe the queue + while ( mlt_deque_count( this->queue ) ) + mlt_frame_close( mlt_deque_pop_back( this->queue ) ); + + // Close the queue + mlt_deque_close( this->queue ); + } +} + +void mlt_consumer_purge( mlt_consumer this ) +{ + if ( this->ahead ) + { + pthread_mutex_lock( &this->mutex ); + while ( mlt_deque_count( this->queue ) ) + mlt_frame_close( mlt_deque_pop_back( this->queue ) ); + pthread_cond_broadcast( &this->cond ); + pthread_mutex_unlock( &this->mutex ); + } +} + +mlt_frame mlt_consumer_rt_frame( mlt_consumer this ) +{ + // Frame to return + mlt_frame frame = NULL; + + // Get the properties + mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); + + // Check if the user has requested real time or not + if ( this->real_time ) + { + int size = 1; + + // Is the read ahead running? + if ( this->ahead == 0 ) + { + int buffer = mlt_properties_get_int( properties, "buffer" ); + int prefill = mlt_properties_get_int( properties, "prefill" ); + consumer_read_ahead_start( this ); + if ( buffer > 1 ) + size = prefill > 0 && prefill < buffer ? prefill : buffer; + } + + // Get frame from queue + pthread_mutex_lock( &this->mutex ); + while( this->ahead && mlt_deque_count( this->queue ) < size ) + pthread_cond_wait( &this->cond, &this->mutex ); + frame = mlt_deque_pop_front( this->queue ); + pthread_cond_broadcast( &this->cond ); + pthread_mutex_unlock( &this->mutex ); + } + else + { + // Get the frame in non real time + frame = mlt_consumer_get_frame( this ); + + // This isn't true, but from the consumers perspective it is + if ( frame != NULL ) + mlt_properties_set_int( MLT_FRAME_PROPERTIES( frame ), "rendered", 1 ); + } + + return frame; +} + +/** Callback for the implementation to indicate a stopped condition. +*/ + +void mlt_consumer_stopped( mlt_consumer this ) +{ + mlt_properties_set_int( MLT_CONSUMER_PROPERTIES( this ), "running", 0 ); + mlt_events_fire( MLT_CONSUMER_PROPERTIES( this ), "consumer-stopped", NULL ); +} + /** Stop the consumer. */ int mlt_consumer_stop( mlt_consumer this ) { // Get the properies - mlt_properties properties = mlt_consumer_properties( this ); + mlt_properties properties = MLT_CONSUMER_PROPERTIES( this ); + char *debug = mlt_properties_get( MLT_CONSUMER_PROPERTIES( this ), "debug" ); + + // Just in case... + if ( debug ) fprintf( stderr, "%s: stopping put waiting\n", debug ); + pthread_mutex_lock( &this->put_mutex ); + this->put_active = 0; + pthread_cond_broadcast( &this->put_cond ); + pthread_mutex_unlock( &this->put_mutex ); // Stop the consumer + if ( debug ) fprintf( stderr, "%s: stopping consumer\n", debug ); if ( this->stop != NULL ) this->stop( this ); + // Check if the user has requested real time or not and stop if necessary + if ( debug ) fprintf( stderr, "%s: stopping read_ahead\n", debug ); + if ( mlt_properties_get_int( properties, "real_time" ) ) + consumer_read_ahead_stop( this ); + // Kill the test card mlt_properties_set_data( properties, "test_card_producer", NULL, 0, NULL, NULL ); @@ -194,6 +841,8 @@ int mlt_consumer_stop( mlt_consumer this ) if ( mlt_properties_get( properties, "post" ) ) system( mlt_properties_get( properties, "post" ) ); + if ( debug ) fprintf( stderr, "%s: stopped\n", debug ); + return 0; } @@ -214,16 +863,29 @@ int mlt_consumer_is_stopped( mlt_consumer this ) void mlt_consumer_close( mlt_consumer this ) { - // Get the childs close function - void ( *consumer_close )( ) = this->close; + if ( this != NULL && mlt_properties_dec_ref( MLT_CONSUMER_PROPERTIES( this ) ) <= 0 ) + { + // Get the childs close function + void ( *consumer_close )( ) = this->close; - // Make sure it only gets called once - this->close = NULL; + if ( consumer_close ) + { + // Just in case... + //mlt_consumer_stop( this ); - // Call the childs close if available - if ( consumer_close != NULL ) - consumer_close( this ); - else - mlt_service_close( &this->parent ); -} + this->close = NULL; + consumer_close( this ); + } + else + { + // Make sure it only gets called once + this->parent.close = NULL; + + // Destroy the push mutex and condition + pthread_mutex_destroy( &this->put_mutex ); + pthread_cond_destroy( &this->put_cond ); + mlt_service_close( &this->parent ); + } + } +}