+++ /dev/null
-/*
- * filter_jackrack.c -- filter audio through Jack and/or LADSPA plugins
- * Copyright (C) 2004 Ushodaya Enterprises Limited
- * Author: Dan Dennedy <dan@dennedy.org>
- *
- * 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 program 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.
- *
- * 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.
- */
-
-#include <framework/mlt_filter.h>
-#include <framework/mlt_frame.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <jack/jack.h>
-#include <jack/ringbuffer.h>
-#include <pthread.h>
-#include <string.h>
-
-#include "jack_rack.h"
-
-#define BUFFER_LEN 204800 * 3
-
-static void initialise_jack_ports( mlt_properties properties )
-{
- int i;
- char mlt_name[20], rack_name[30];
- jack_port_t **port = NULL;
- jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
- jack_nframes_t jack_buffer_size = jack_get_buffer_size( jack_client );
-
- // Propogate these for the Jack processing callback
- int channels = mlt_properties_get_int( properties, "channels" );
-
- // Start JackRack
- if ( mlt_properties_get( properties, "src" ) )
- {
- snprintf( rack_name, sizeof( rack_name ), "jackrack%d", getpid() );
- jack_rack_t *jackrack = jack_rack_new( rack_name, mlt_properties_get_int( properties, "channels" ) );
- jack_rack_open_file( jackrack, mlt_properties_get( properties, "src" ) );
-
- mlt_properties_set_data( properties, "jackrack", jackrack, 0, NULL, NULL );
- mlt_properties_set( properties, "_rack_client_name", rack_name );
- }
-
- // Allocate buffers and ports
- jack_ringbuffer_t **output_buffers = mlt_pool_alloc( sizeof( jack_ringbuffer_t *) * channels );
- jack_ringbuffer_t **input_buffers = mlt_pool_alloc( sizeof( jack_ringbuffer_t *) * channels );
- jack_port_t **jack_output_ports = mlt_pool_alloc( sizeof(jack_port_t *) * channels );
- jack_port_t **jack_input_ports = mlt_pool_alloc( sizeof(jack_port_t *) * channels );
- float **jack_output_buffers = mlt_pool_alloc( sizeof(float *) * jack_buffer_size );
- float **jack_input_buffers = mlt_pool_alloc( sizeof(float *) * jack_buffer_size );
-
- // Set properties - released inside filter_close
- mlt_properties_set_data( properties, "output_buffers", output_buffers, sizeof( jack_ringbuffer_t *) * channels, NULL, NULL );
- mlt_properties_set_data( properties, "input_buffers", input_buffers, sizeof( jack_ringbuffer_t *) * channels, NULL, NULL );
- mlt_properties_set_data( properties, "jack_output_ports", jack_output_ports, sizeof( jack_port_t *) * channels, NULL, NULL );
- mlt_properties_set_data( properties, "jack_input_ports", jack_input_ports, sizeof( jack_port_t *) * channels, NULL, NULL );
- mlt_properties_set_data( properties, "jack_output_buffers", jack_output_buffers, sizeof( float *) * channels, NULL, NULL );
- mlt_properties_set_data( properties, "jack_input_buffers", jack_input_buffers, sizeof( float *) * channels, NULL, NULL );
-
- // Start Jack processing - required before registering ports
- jack_activate( jack_client );
-
- // Register Jack ports
- for ( i = 0; i < channels; i++ )
- {
- int in;
-
- output_buffers[i] = jack_ringbuffer_create( BUFFER_LEN * sizeof(float) );
- input_buffers[i] = jack_ringbuffer_create( BUFFER_LEN * sizeof(float) );
- snprintf( mlt_name, sizeof( mlt_name ), "obuf%d", i );
- mlt_properties_set_data( properties, mlt_name, output_buffers[i], BUFFER_LEN * sizeof(float), NULL, NULL );
- snprintf( mlt_name, sizeof( mlt_name ), "ibuf%d", i );
- mlt_properties_set_data( properties, mlt_name, input_buffers[i], BUFFER_LEN * sizeof(float), NULL, NULL );
-
- for ( in = 0; in < 2; in++ )
- {
- snprintf( mlt_name, sizeof( mlt_name ), "%s_%d", in ? "in" : "out", i + 1);
- port = ( in ? &jack_input_ports[i] : &jack_output_ports[i] );
-
- *port = jack_port_register( jack_client, mlt_name, JACK_DEFAULT_AUDIO_TYPE,
- ( in ? JackPortIsInput : JackPortIsOutput ) | JackPortIsTerminal, 0 );
- }
- }
-
- // Establish connections
- for ( i = 0; i < channels; i++ )
- {
- int in;
- for ( in = 0; in < 2; in++ )
- {
- port = ( in ? &jack_input_ports[i] : &jack_output_ports[i] );
- snprintf( mlt_name, sizeof( mlt_name ), "%s", jack_port_name( *port ) );
-
- snprintf( rack_name, sizeof( rack_name ), "%s_%d", in ? "in" : "out", i + 1 );
- if ( mlt_properties_get( properties, "_rack_client_name" ) )
- snprintf( rack_name, sizeof( rack_name ), "%s:%s_%d", mlt_properties_get( properties, "_rack_client_name" ), in ? "out" : "in", i + 1);
- else if ( mlt_properties_get( properties, rack_name ) )
- snprintf( rack_name, sizeof( rack_name ), "%s", mlt_properties_get( properties, rack_name ) );
- else
- snprintf( rack_name, sizeof( rack_name ), "%s:%s_%d", mlt_properties_get( properties, "_client_name" ), in ? "out" : "in", i + 1);
-
- if ( in )
- {
- fprintf( stderr, "jack connect %s to %s\n", rack_name, mlt_name );
- jack_connect( jack_client, rack_name, mlt_name );
- }
- else
- {
- fprintf( stderr, "jack connect %s to %s\n", mlt_name, rack_name );
- jack_connect( jack_client, mlt_name, rack_name );
- }
- }
- }
-}
-
-static int jack_process (jack_nframes_t frames, void * data)
-{
- mlt_filter filter = (mlt_filter) data;
- mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
- int channels = mlt_properties_get_int( properties, "channels" );
- int frame_size = mlt_properties_get_int( properties, "_samples" ) * sizeof(float);
- int sync = mlt_properties_get_int( properties, "_sync" );
- int err = 0;
- int i;
- static int total_size = 0;
-
- jack_ringbuffer_t **output_buffers = mlt_properties_get_data( properties, "output_buffers", NULL );
- if ( output_buffers == NULL )
- return 0;
- jack_ringbuffer_t **input_buffers = mlt_properties_get_data( properties, "input_buffers", NULL );
- jack_port_t **jack_output_ports = mlt_properties_get_data( properties, "jack_output_ports", NULL );
- jack_port_t **jack_input_ports = mlt_properties_get_data( properties, "jack_input_ports", NULL );
- float **jack_output_buffers = mlt_properties_get_data( properties, "jack_output_buffers", NULL );
- float **jack_input_buffers = mlt_properties_get_data( properties, "jack_input_buffers", NULL );
- pthread_mutex_t *output_lock = mlt_properties_get_data( properties, "output_lock", NULL );
- pthread_cond_t *output_ready = mlt_properties_get_data( properties, "output_ready", NULL );
-
- for ( i = 0; i < channels; i++ )
- {
- size_t jack_size = ( frames * sizeof(float) );
- size_t ring_size;
-
- // Send audio through out port
- jack_output_buffers[i] = jack_port_get_buffer( jack_output_ports[i], frames );
- if ( ! jack_output_buffers[i] )
- {
- fprintf( stderr, "%s: no jack buffer for output port %d\n", __FUNCTION__, i );
- err = 1;
- break;
- }
- ring_size = jack_ringbuffer_read_space( output_buffers[i] );
- jack_ringbuffer_read( output_buffers[i], ( char * )jack_output_buffers[i], ring_size < jack_size ? ring_size : jack_size );
-
- // Return audio through in port
- jack_input_buffers[i] = jack_port_get_buffer( jack_input_ports[i], frames );
- if ( ! jack_input_buffers[i] )
- {
- fprintf( stderr, "%s: no jack buffer for input port %d\n", __FUNCTION__, i );
- err = 1;
- break;
- }
-
- // Do not start returning audio until we have sent first mlt frame
- if ( sync && i == 0 && frame_size > 0 )
- total_size += ring_size;
- //fprintf(stderr, "sync %d frame_size %d ring_size %d jack_size %d\n", sync, frame_size, ring_size, jack_size );
-
- if ( ! sync || ( frame_size > 0 && total_size >= frame_size ) )
- {
- ring_size = jack_ringbuffer_write_space( input_buffers[i] );
- jack_ringbuffer_write( input_buffers[i], ( char * )jack_input_buffers[i], ring_size < jack_size ? ring_size : jack_size );
-
- if ( sync )
- {
- // Tell mlt that audio is available
- pthread_mutex_lock( output_lock);
- pthread_cond_signal( output_ready );
- pthread_mutex_unlock( output_lock);
-
- // Clear sync phase
- mlt_properties_set_int( properties, "_sync", 0 );
- }
- }
- }
-
- return err;
-}
-
-
-/** Get the audio.
-*/
-
-static int jackrack_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
-{
- // Get the filter service
- mlt_filter filter = mlt_frame_pop_audio( frame );
-
- // Get the filter properties
- mlt_properties filter_properties = MLT_FILTER_PROPERTIES( filter );
-
- int jack_frequency = mlt_properties_get_int( filter_properties, "_sample_rate" );
-
- // Get the producer's audio
- mlt_frame_get_audio( frame, buffer, format, &jack_frequency, channels, samples );
-
- // TODO: Deal with sample rate differences
- if ( *frequency != jack_frequency )
- fprintf( stderr, "mismatching frequencies in filter jackrack\n" );
- *frequency = jack_frequency;
-
- // Initialise Jack ports and connections if needed
- if ( mlt_properties_get_int( filter_properties, "_samples" ) == 0 )
- mlt_properties_set_int( filter_properties, "_samples", *samples );
-
- // Get the filter-specific properties
- jack_ringbuffer_t **output_buffers = mlt_properties_get_data( filter_properties, "output_buffers", NULL );
- jack_ringbuffer_t **input_buffers = mlt_properties_get_data( filter_properties, "input_buffers", NULL );
-// pthread_mutex_t *output_lock = mlt_properties_get_data( filter_properties, "output_lock", NULL );
-// pthread_cond_t *output_ready = mlt_properties_get_data( filter_properties, "output_ready", NULL );
-
- // Process the audio
- int16_t *q = *buffer;
- float sample[ 2 ][ 10000 ];
- int i, j;
-// struct timespec tm = { 0, 0 };
-
- // Convert to floats and write into output ringbuffer
- if ( jack_ringbuffer_write_space( output_buffers[0] ) >= ( *samples * sizeof(float) ) )
- {
- for ( i = 0; i < *samples; i++ )
- for ( j = 0; j < *channels; j++ )
- sample[ j ][ i ] = ( float )( *q ++ ) / 32768.0;
-
- for ( j = 0; j < *channels; j++ )
- jack_ringbuffer_write( output_buffers[j], ( char * )sample[ j ], *samples * sizeof(float) );
- }
-
- // Synchronization phase - wait for signal from Jack process
- while ( jack_ringbuffer_read_space( input_buffers[ *channels - 1 ] ) < ( *samples * sizeof(float) ) ) ;
- //pthread_cond_wait( output_ready, output_lock );
-
- // Read from input ringbuffer and convert from floats
- if ( jack_ringbuffer_read_space( input_buffers[0] ) >= ( *samples * sizeof(float) ) )
- {
- // Initialise to silence, but repeat last frame if available in case of
- // buffer underrun
- for ( j = 0; j < *channels; j++ )
- jack_ringbuffer_read( input_buffers[j], ( char * )sample[ j ], *samples * sizeof(float) );
-
- q = *buffer;
- for ( i = 0; i < *samples; i++ )
- for ( j = 0; j < *channels; j++ )
- {
- if ( sample[ j ][ i ] > 1.0 )
- sample[ j ][ i ] = 1.0;
- else if ( sample[ j ][ i ] < -1.0 )
- sample[ j ][ i ] = -1.0;
-
- if ( sample[ j ][ i ] > 0 )
- *q ++ = 32767 * sample[ j ][ i ];
- else
- *q ++ = 32768 * sample[ j ][ i ];
- }
- }
-
- return 0;
-}
-
-
-/** Filter processing.
-*/
-
-static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
-{
- {
- mlt_properties properties = MLT_FILTER_PROPERTIES( this );
- mlt_frame_push_audio( frame, this );
- mlt_frame_push_audio( frame, jackrack_get_audio );
-
- if ( mlt_properties_get_int( properties, "_sync" ) )
- initialise_jack_ports( properties );
- }
-
- return frame;
-}
-
-
-static void filter_close( mlt_filter this )
-{
- int i;
- char mlt_name[20];
- mlt_properties properties = MLT_FILTER_PROPERTIES( this );
- jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
-
- jack_deactivate( jack_client );
- jack_client_close( jack_client );
- for ( i = 0; i < mlt_properties_get_int( properties, "channels" ); i++ )
- {
- snprintf( mlt_name, sizeof( mlt_name ), "obuf%d", i );
- jack_ringbuffer_free( mlt_properties_get_data( properties, mlt_name, NULL ) );
- snprintf( mlt_name, sizeof( mlt_name ), "ibuf%d", i );
- jack_ringbuffer_free( mlt_properties_get_data( properties, mlt_name, NULL ) );
- }
- mlt_pool_release( mlt_properties_get_data( properties, "output_buffers", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "input_buffers", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "jack_output_ports", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "jack_input_ports", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "jack_output_buffers", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "jack_input_buffers", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "output_lock", NULL ) );
- mlt_pool_release( mlt_properties_get_data( properties, "output_ready", NULL ) );
-
- jack_rack_t *jackrack = mlt_properties_get_data( properties, "jackrack", NULL );
- jack_rack_destroy( jackrack );
-
- this->parent.close = NULL;
- mlt_service_close( &this->parent );
-}
-
-/** Constructor for the filter.
-*/
-
-mlt_filter filter_jackrack_init( mlt_profile profile, mlt_service_type type, const char *id, char *arg )
-{
- mlt_filter this = mlt_filter_new( );
- if ( this != NULL )
- {
- char name[14];
-
- snprintf( name, sizeof( name ), "mlt%d", getpid() );
- jack_client_t *jack_client = jack_client_new( name );
- if ( jack_client )
- {
- mlt_properties properties = MLT_FILTER_PROPERTIES( this );
- pthread_mutex_t *output_lock = mlt_pool_alloc( sizeof( pthread_mutex_t ) );
- pthread_cond_t *output_ready = mlt_pool_alloc( sizeof( pthread_cond_t ) );
-
- jack_set_process_callback( jack_client, jack_process, this );
- //TODO: jack_on_shutdown( jack_client, jack_shutdown_cb, this );
- this->process = filter_process;
- this->close = filter_close;
- pthread_mutex_init( output_lock, NULL );
- pthread_cond_init( output_ready, NULL );
-
- mlt_properties_set( properties, "src", arg );
- mlt_properties_set( properties, "_client_name", name );
- mlt_properties_set_data( properties, "jack_client", jack_client, 0, NULL, NULL );
- mlt_properties_set_int( properties, "_sample_rate", jack_get_sample_rate( jack_client ) );
- mlt_properties_set_data( properties, "output_lock", output_lock, 0, NULL, NULL );
- mlt_properties_set_data( properties, "output_ready", output_ready, 0, NULL, NULL );
- mlt_properties_set_int( properties, "_sync", 1 );
- mlt_properties_set_int( properties, "channels", 2 );
- }
- }
- return this;
-}
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