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374 lines
14 KiB
374 lines
14 KiB
/*
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* filter_jackrack.c -- filter audio through Jack and/or LADSPA plugins
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* Copyright (C) 2004 Ushodaya Enterprises Limited
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* Author: Dan Dennedy <dan@dennedy.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "filter_jackrack.h"
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#include <framework/mlt_frame.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <jack/jack.h>
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#include <jack/ringbuffer.h>
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#include <pthread.h>
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#include <string.h>
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#include "jack_rack.h"
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#define BUFFER_LEN 204800 * 3
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static void initialise_jack_ports( mlt_properties properties )
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{
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int i;
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char mlt_name[20], rack_name[30];
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jack_port_t **port = NULL;
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jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
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jack_nframes_t jack_buffer_size = jack_get_buffer_size( jack_client );
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// Propogate these for the Jack processing callback
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int channels = mlt_properties_get_int( properties, "channels" );
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// Start JackRack
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if ( mlt_properties_get( properties, "src" ) )
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{
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snprintf( rack_name, sizeof( rack_name ), "jackrack%d", getpid() );
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jack_rack_t *jackrack = jack_rack_new( rack_name, mlt_properties_get_int( properties, "channels" ) );
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jack_rack_open_file( jackrack, mlt_properties_get( properties, "src" ) );
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mlt_properties_set_data( properties, "jackrack", jackrack, 0, NULL, NULL );
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mlt_properties_set( properties, "_rack_client_name", rack_name );
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}
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// Allocate buffers and ports
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jack_ringbuffer_t **output_buffers = mlt_pool_alloc( sizeof( jack_ringbuffer_t *) * channels );
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jack_ringbuffer_t **input_buffers = mlt_pool_alloc( sizeof( jack_ringbuffer_t *) * channels );
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jack_port_t **jack_output_ports = mlt_pool_alloc( sizeof(jack_port_t *) * channels );
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jack_port_t **jack_input_ports = mlt_pool_alloc( sizeof(jack_port_t *) * channels );
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float **jack_output_buffers = mlt_pool_alloc( sizeof(float *) * jack_buffer_size );
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float **jack_input_buffers = mlt_pool_alloc( sizeof(float *) * jack_buffer_size );
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// Set properties - released inside filter_close
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mlt_properties_set_data( properties, "output_buffers", output_buffers, sizeof( jack_ringbuffer_t *) * channels, NULL, NULL );
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mlt_properties_set_data( properties, "input_buffers", input_buffers, sizeof( jack_ringbuffer_t *) * channels, NULL, NULL );
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mlt_properties_set_data( properties, "jack_output_ports", jack_output_ports, sizeof( jack_port_t *) * channels, NULL, NULL );
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mlt_properties_set_data( properties, "jack_input_ports", jack_input_ports, sizeof( jack_port_t *) * channels, NULL, NULL );
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mlt_properties_set_data( properties, "jack_output_buffers", jack_output_buffers, sizeof( float *) * channels, NULL, NULL );
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mlt_properties_set_data( properties, "jack_input_buffers", jack_input_buffers, sizeof( float *) * channels, NULL, NULL );
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// Start Jack processing - required before registering ports
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jack_activate( jack_client );
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// Register Jack ports
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for ( i = 0; i < channels; i++ )
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{
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int in;
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output_buffers[i] = jack_ringbuffer_create( BUFFER_LEN * sizeof(float) );
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input_buffers[i] = jack_ringbuffer_create( BUFFER_LEN * sizeof(float) );
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snprintf( mlt_name, sizeof( mlt_name ), "obuf%d", i );
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mlt_properties_set_data( properties, mlt_name, output_buffers[i], BUFFER_LEN * sizeof(float), NULL, NULL );
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snprintf( mlt_name, sizeof( mlt_name ), "ibuf%d", i );
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mlt_properties_set_data( properties, mlt_name, input_buffers[i], BUFFER_LEN * sizeof(float), NULL, NULL );
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for ( in = 0; in < 2; in++ )
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{
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snprintf( mlt_name, sizeof( mlt_name ), "%s_%d", in ? "in" : "out", i + 1);
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port = ( in ? &jack_input_ports[i] : &jack_output_ports[i] );
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*port = jack_port_register( jack_client, mlt_name, JACK_DEFAULT_AUDIO_TYPE,
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( in ? JackPortIsInput : JackPortIsOutput ) | JackPortIsTerminal, 0 );
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}
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}
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// Establish connections
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for ( i = 0; i < channels; i++ )
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{
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int in;
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for ( in = 0; in < 2; in++ )
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{
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port = ( in ? &jack_input_ports[i] : &jack_output_ports[i] );
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snprintf( mlt_name, sizeof( mlt_name ), "%s", jack_port_name( *port ) );
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snprintf( rack_name, sizeof( rack_name ), "%s_%d", in ? "in" : "out", i + 1 );
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if ( mlt_properties_get( properties, "_rack_client_name" ) )
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snprintf( rack_name, sizeof( rack_name ), "%s:%s_%d", mlt_properties_get( properties, "_rack_client_name" ), in ? "out" : "in", i + 1);
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else if ( mlt_properties_get( properties, rack_name ) )
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snprintf( rack_name, sizeof( rack_name ), "%s", mlt_properties_get( properties, rack_name ) );
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else
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snprintf( rack_name, sizeof( rack_name ), "%s:%s_%d", mlt_properties_get( properties, "_client_name" ), in ? "out" : "in", i + 1);
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if ( in )
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{
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fprintf( stderr, "jack connect %s to %s\n", rack_name, mlt_name );
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jack_connect( jack_client, rack_name, mlt_name );
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}
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else
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{
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fprintf( stderr, "jack connect %s to %s\n", mlt_name, rack_name );
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jack_connect( jack_client, mlt_name, rack_name );
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}
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}
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}
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}
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static int jack_process (jack_nframes_t frames, void * data)
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{
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mlt_filter filter = (mlt_filter) data;
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mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
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int channels = mlt_properties_get_int( properties, "channels" );
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int frame_size = mlt_properties_get_int( properties, "_samples" ) * sizeof(float);
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int sync = mlt_properties_get_int( properties, "_sync" );
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int err = 0;
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int i;
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static int total_size = 0;
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jack_ringbuffer_t **output_buffers = mlt_properties_get_data( properties, "output_buffers", NULL );
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if ( output_buffers == NULL )
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return 0;
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jack_ringbuffer_t **input_buffers = mlt_properties_get_data( properties, "input_buffers", NULL );
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jack_port_t **jack_output_ports = mlt_properties_get_data( properties, "jack_output_ports", NULL );
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jack_port_t **jack_input_ports = mlt_properties_get_data( properties, "jack_input_ports", NULL );
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float **jack_output_buffers = mlt_properties_get_data( properties, "jack_output_buffers", NULL );
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float **jack_input_buffers = mlt_properties_get_data( properties, "jack_input_buffers", NULL );
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pthread_mutex_t *output_lock = mlt_properties_get_data( properties, "output_lock", NULL );
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pthread_cond_t *output_ready = mlt_properties_get_data( properties, "output_ready", NULL );
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for ( i = 0; i < channels; i++ )
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{
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size_t jack_size = ( frames * sizeof(float) );
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size_t ring_size;
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// Send audio through out port
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jack_output_buffers[i] = jack_port_get_buffer( jack_output_ports[i], frames );
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if ( ! jack_output_buffers[i] )
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{
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fprintf( stderr, "%s: no jack buffer for output port %d\n", __FUNCTION__, i );
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err = 1;
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break;
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}
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ring_size = jack_ringbuffer_read_space( output_buffers[i] );
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jack_ringbuffer_read( output_buffers[i], ( char * )jack_output_buffers[i], ring_size < jack_size ? ring_size : jack_size );
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// Return audio through in port
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jack_input_buffers[i] = jack_port_get_buffer( jack_input_ports[i], frames );
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if ( ! jack_input_buffers[i] )
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{
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fprintf( stderr, "%s: no jack buffer for input port %d\n", __FUNCTION__, i );
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err = 1;
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break;
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}
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// Do not start returning audio until we have sent first mlt frame
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if ( sync && i == 0 && frame_size > 0 )
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total_size += ring_size;
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//fprintf(stderr, "sync %d frame_size %d ring_size %d jack_size %d\n", sync, frame_size, ring_size, jack_size );
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if ( ! sync || ( frame_size > 0 && total_size >= frame_size ) )
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{
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ring_size = jack_ringbuffer_write_space( input_buffers[i] );
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jack_ringbuffer_write( input_buffers[i], ( char * )jack_input_buffers[i], ring_size < jack_size ? ring_size : jack_size );
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if ( sync )
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{
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// Tell mlt that audio is available
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pthread_mutex_lock( output_lock);
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pthread_cond_signal( output_ready );
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pthread_mutex_unlock( output_lock);
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// Clear sync phase
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mlt_properties_set_int( properties, "_sync", 0 );
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}
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}
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}
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return err;
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}
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/** Get the audio.
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*/
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static int jackrack_get_audio( mlt_frame frame, int16_t **buffer, mlt_audio_format *format, int *frequency, int *channels, int *samples )
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{
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// Get the filter service
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mlt_filter filter = mlt_frame_pop_audio( frame );
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// Get the filter properties
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mlt_properties filter_properties = MLT_FILTER_PROPERTIES( filter );
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int jack_frequency = mlt_properties_get_int( filter_properties, "_sample_rate" );
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// Get the producer's audio
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mlt_frame_get_audio( frame, buffer, format, &jack_frequency, channels, samples );
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// TODO: Deal with sample rate differences
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if ( *frequency != jack_frequency )
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fprintf( stderr, "mismatching frequencies in filter jackrack\n" );
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*frequency = jack_frequency;
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// Initialise Jack ports and connections if needed
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if ( mlt_properties_get_int( filter_properties, "_samples" ) == 0 )
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mlt_properties_set_int( filter_properties, "_samples", *samples );
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// Get the filter-specific properties
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jack_ringbuffer_t **output_buffers = mlt_properties_get_data( filter_properties, "output_buffers", NULL );
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jack_ringbuffer_t **input_buffers = mlt_properties_get_data( filter_properties, "input_buffers", NULL );
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// pthread_mutex_t *output_lock = mlt_properties_get_data( filter_properties, "output_lock", NULL );
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// pthread_cond_t *output_ready = mlt_properties_get_data( filter_properties, "output_ready", NULL );
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// Process the audio
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int16_t *q = *buffer;
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float sample[ 2 ][ 10000 ];
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int i, j;
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// struct timespec tm = { 0, 0 };
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// Convert to floats and write into output ringbuffer
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if ( jack_ringbuffer_write_space( output_buffers[0] ) >= ( *samples * sizeof(float) ) )
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{
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for ( i = 0; i < *samples; i++ )
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for ( j = 0; j < *channels; j++ )
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sample[ j ][ i ] = ( float )( *q ++ ) / 32768.0;
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for ( j = 0; j < *channels; j++ )
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jack_ringbuffer_write( output_buffers[j], ( char * )sample[ j ], *samples * sizeof(float) );
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}
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// Synchronization phase - wait for signal from Jack process
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while ( jack_ringbuffer_read_space( input_buffers[ *channels - 1 ] ) < ( *samples * sizeof(float) ) ) ;
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//pthread_cond_wait( output_ready, output_lock );
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// Read from input ringbuffer and convert from floats
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if ( jack_ringbuffer_read_space( input_buffers[0] ) >= ( *samples * sizeof(float) ) )
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{
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// Initialise to silence, but repeat last frame if available in case of
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// buffer underrun
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for ( j = 0; j < *channels; j++ )
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jack_ringbuffer_read( input_buffers[j], ( char * )sample[ j ], *samples * sizeof(float) );
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q = *buffer;
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for ( i = 0; i < *samples; i++ )
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for ( j = 0; j < *channels; j++ )
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{
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if ( sample[ j ][ i ] > 1.0 )
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sample[ j ][ i ] = 1.0;
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else if ( sample[ j ][ i ] < -1.0 )
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sample[ j ][ i ] = -1.0;
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if ( sample[ j ][ i ] > 0 )
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*q ++ = 32767 * sample[ j ][ i ];
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else
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*q ++ = 32768 * sample[ j ][ i ];
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}
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}
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return 0;
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}
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/** Filter processing.
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*/
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static mlt_frame filter_process( mlt_filter this, mlt_frame frame )
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{
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{
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mlt_properties properties = MLT_FILTER_PROPERTIES( this );
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mlt_frame_push_audio( frame, this );
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mlt_frame_push_audio( frame, jackrack_get_audio );
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if ( mlt_properties_get_int( properties, "_sync" ) )
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initialise_jack_ports( properties );
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}
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return frame;
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}
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static void filter_close( mlt_filter this )
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{
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int i;
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char mlt_name[20];
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mlt_properties properties = MLT_FILTER_PROPERTIES( this );
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jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
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jack_deactivate( jack_client );
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jack_client_close( jack_client );
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for ( i = 0; i < mlt_properties_get_int( properties, "channels" ); i++ )
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{
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snprintf( mlt_name, sizeof( mlt_name ), "obuf%d", i );
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jack_ringbuffer_free( mlt_properties_get_data( properties, mlt_name, NULL ) );
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snprintf( mlt_name, sizeof( mlt_name ), "ibuf%d", i );
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jack_ringbuffer_free( mlt_properties_get_data( properties, mlt_name, NULL ) );
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}
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mlt_pool_release( mlt_properties_get_data( properties, "output_buffers", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "input_buffers", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "jack_output_ports", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "jack_input_ports", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "jack_output_buffers", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "jack_input_buffers", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "output_lock", NULL ) );
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mlt_pool_release( mlt_properties_get_data( properties, "output_ready", NULL ) );
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jack_rack_t *jackrack = mlt_properties_get_data( properties, "jackrack", NULL );
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jack_rack_destroy( jackrack );
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this->parent.close = NULL;
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mlt_service_close( &this->parent );
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}
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/** Constructor for the filter.
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*/
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mlt_filter filter_jackrack_init( char *arg )
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{
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mlt_filter this = mlt_filter_new( );
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if ( this != NULL )
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{
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char name[14];
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snprintf( name, sizeof( name ), "mlt%d", getpid() );
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jack_client_t *jack_client = jack_client_new( name );
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if ( jack_client )
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{
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mlt_properties properties = MLT_FILTER_PROPERTIES( this );
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pthread_mutex_t *output_lock = mlt_pool_alloc( sizeof( pthread_mutex_t ) );
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pthread_cond_t *output_ready = mlt_pool_alloc( sizeof( pthread_cond_t ) );
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jack_set_process_callback( jack_client, jack_process, this );
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//TODO: jack_on_shutdown( jack_client, jack_shutdown_cb, this );
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this->process = filter_process;
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this->close = filter_close;
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pthread_mutex_init( output_lock, NULL );
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pthread_cond_init( output_ready, NULL );
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mlt_properties_set( properties, "src", arg );
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mlt_properties_set( properties, "_client_name", name );
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mlt_properties_set_data( properties, "jack_client", jack_client, 0, NULL, NULL );
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mlt_properties_set_int( properties, "_sample_rate", jack_get_sample_rate( jack_client ) );
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mlt_properties_set_data( properties, "output_lock", output_lock, 0, NULL, NULL );
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mlt_properties_set_data( properties, "output_ready", output_ready, 0, NULL, NULL );
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mlt_properties_set_int( properties, "_sync", 1 );
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mlt_properties_set_int( properties, "channels", 2 );
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}
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}
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return this;
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}
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