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/*
* 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.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <pthread.h>
#include <jack/jack.h>
#include <jack/ringbuffer.h>
#include <string.h>
#include "jack_rack.h"
extern pthread_mutex_t g_activate_mutex;
#define BUFFER_LEN 204800 * 6
static void jack_started_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
{
listener( owner, service, (mlt_position*) args[0] );
}
static void jack_starting_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
{
listener( owner, service, (mlt_position*) args[0] );
}
static void jack_stopped_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
{
listener( owner, service, (mlt_position*) args[0] );
}
static void jack_seek_transmitter( mlt_listener listener, mlt_properties owner, mlt_service service, void **args )
{
listener( owner, service, (mlt_position*) args[0] );
}
#define JACKSTATE(x) (x==JackTransportStopped?"stopped":x==JackTransportStarting?"starting":x==JackTransportRolling?"rolling":"unknown")
#define SYNC_STATE_REQ_SEEK 0
#define SYNC_STATE_SEEKING 1
static int jack_sync( jack_transport_state_t state, jack_position_t *jack_pos, void *arg )
{
mlt_filter filter = (mlt_filter) arg;
mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE(filter) );
mlt_position position = mlt_profile_fps( profile ) * jack_pos->frame / jack_pos->frame_rate + 0.5;
int sync_state = SYNC_STATE_REQ_SEEK;
int result = 1;
mlt_log_debug( MLT_FILTER_SERVICE(filter), "%s frame %u rate %u pos %d last_pos %d\n",
JACKSTATE(state), jack_pos->frame, jack_pos->frame_rate, position,
mlt_properties_get_position( properties, "_last_pos" ) );
if ( state == JackTransportStopped )
{
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
mlt_events_fire( properties, "jack-stopped", &position, NULL );
// mlt_properties_set_int( properties, "_sync_guard", 0 );
}
else if ( state == JackTransportStarting )
{
result = 0;
sync_state = mlt_properties_get_int( properties, "_sync_state" );
int last_sync_state = mlt_properties_get_int( properties, "_last_sync_state" ); /* only for debug */
switch( sync_state )
{
case SYNC_STATE_REQ_SEEK:
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_SEEKING );
mlt_properties_set_int( properties, "_last_sync_state", SYNC_STATE_REQ_SEEK );
mlt_properties_set_position( properties, "_last_jack_position", position );
mlt_events_fire( properties, "jack-starting", &position, NULL );
break;
case SYNC_STATE_SEEKING:
if ( mlt_properties_get_position( properties, "_last_jack_position" ) != position )
{
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
mlt_properties_set_int( properties, "_last_sync_state", SYNC_STATE_SEEKING );
break;
}
mlt_events_fire( properties, "jack-last-pos-req", NULL); /* don't know how to do it better ??? */
mlt_position last_pos = mlt_properties_get_position( properties, "_last_position" );
if ( position == last_pos )
{
result = 1;
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
mlt_properties_set_int( properties, "_last_sync_state", SYNC_STATE_SEEKING );
}
else
{
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK ); /* sometimes the seek req must be done twice - why ? */
mlt_properties_set_int( properties, "_last_sync_state", SYNC_STATE_SEEKING );
}
break;
default:
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
break;
}
}
else if ( state == JackTransportRolling )
{
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
// mlt_events_fire( properties, "jack-started", &position, NULL );
// mlt_properties_set_int( properties, "_sync_guard", 0 );
}
else
{
// mlt_properties_set_int( properties, "_sync_guard", 0 );
}
return result;
}
static void on_jack_start( mlt_properties owner, mlt_properties properties )
{
mlt_log_verbose( NULL, "%s\n", __FUNCTION__ );
jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
jack_transport_start( jack_client );
}
static void on_jack_stop( mlt_properties owner, mlt_properties properties )
{
mlt_log_verbose( NULL, "%s\n", __FUNCTION__ );
jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
jack_transport_stop( jack_client );
}
static void on_jack_seek( mlt_properties owner, mlt_filter filter, mlt_position *position )
{
mlt_properties properties = MLT_FILTER_PROPERTIES( filter );
mlt_log_verbose( MLT_FILTER_SERVICE(filter), "%s: %d\n", __FUNCTION__, *position );
//mlt_properties_set_int( properties, "_sync_guard", 1 );
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE( filter ) );
jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
jack_nframes_t jack_frame = jack_get_sample_rate( jack_client );
jack_frame *= *position / mlt_profile_fps( profile );
jack_transport_locate( jack_client, jack_frame );
}
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,
(mlt_destructor) jack_rack_destroy, NULL );
mlt_properties_set( properties, "_rack_client_name", rack_name );
}
else
{
// We have to set this to something to prevent re-initialization.
mlt_properties_set_data( properties, "jackrack", jack_client, 0, NULL, NULL );
}
// 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, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "input_buffers", input_buffers,
sizeof( jack_ringbuffer_t *) * channels, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "jack_output_ports", jack_output_ports,
sizeof( jack_port_t *) * channels, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "jack_input_ports", jack_input_ports,
sizeof( jack_port_t *) * channels, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "jack_output_buffers", jack_output_buffers,
sizeof( float *) * channels, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "jack_input_buffers", jack_input_buffers,
sizeof( float *) * channels, mlt_pool_release, NULL );
// 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), (mlt_destructor) jack_ringbuffer_free, NULL );
snprintf( mlt_name, sizeof( mlt_name ), "ibuf%d", i );
mlt_properties_set_data( properties, mlt_name, input_buffers[i],
BUFFER_LEN * sizeof(float), (mlt_destructor) jack_ringbuffer_free, 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 );
}
}
// Start Jack processing - required before registering ports
pthread_mutex_lock( &g_activate_mutex );
jack_activate( jack_client );
pthread_mutex_unlock( &g_activate_mutex );
// 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 )
{
mlt_log_verbose( NULL, "JACK connect %s to %s\n", rack_name, mlt_name );
jack_connect( jack_client, rack_name, mlt_name );
}
else
{
mlt_log_verbose( NULL, "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 );
mlt_profile profile = mlt_service_profile( MLT_FILTER_SERVICE(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] )
{
mlt_log_error( MLT_FILTER_SERVICE(filter), "no buffer for output port %d\n", 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 );
if ( ring_size < jack_size )
memset( &jack_output_buffers[i][ring_size], 0, jack_size - ring_size );
// Return audio through in port
jack_input_buffers[i] = jack_port_get_buffer( jack_input_ports[i], frames );
if ( ! jack_input_buffers[i] )
{
mlt_log_error( MLT_FILTER_SERVICE(filter), "no buffer for input port %d\n", 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;
mlt_log_debug( MLT_FILTER_SERVICE(filter), "sync %d frame_size %d ring_size %zu jack_size %zu\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 );
}
}
}
// Often jackd does not send the stopped event through the JackSyncCallback
jack_client_t *jack_client = mlt_properties_get_data( properties, "jack_client", NULL );
jack_position_t jack_pos;
jack_transport_state_t state = jack_transport_query( jack_client, &jack_pos );
int transport_state = mlt_properties_get_int( properties, "_transport_state" );
mlt_position position = mlt_profile_fps( profile ) * jack_pos.frame / jack_pos.frame_rate + 0.5;
if ( state != transport_state )
{
mlt_properties_set_int( properties, "_transport_state", state );
if ( state == JackTransportStopped )
{
jack_sync( state, &jack_pos, filter );
// mlt_events_fire( properties, "jack-stopped", &position, NULL );
}
else if ( (state == JackTransportRolling ) /* && ( transport_state == JackTransportStarting )*/ )
{
// if ( mlt_properties_get_int( properties, "_sync_guard" ) )
{
mlt_events_fire( properties, "jack-started", &position, NULL );
// mlt_properties_set_int( properties, "_sync_guard", 0 );
}
}
}
else
{
if ( state == JackTransportRolling )
{
// if ( mlt_properties_get_position( properties, "_last_pos" ) < ( position - 100 )
// || mlt_properties_get_position( properties, "_last_pos" ) > ( position + 100 ) )
// {
// mlt_events_fire( properties, "jack-sync", &position, NULL );
// }
// else if ( mlt_properties_get_position( properties, "_last_pos" ) < ( position - 100 )
// || mlt_properties_get_position( properties, "_last_pos" ) > ( position + 100 ) )
// {
// jack_sync( JackTransportStopped, &jack_pos, filter );
// }
}
}
return err;
}
/** Get the audio.
*/
static int jackrack_get_audio( mlt_frame frame, void **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
*format = mlt_audio_float;
mlt_frame_get_audio( frame, buffer, format, &jack_frequency, channels, samples );
// TODO: Deal with sample rate differences
if ( *frequency != jack_frequency )
mlt_log_error( MLT_FILTER_SERVICE( filter ), "mismatching frequencies JACK = %d actual = %d\n",
jack_frequency, *frequency );
*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
float *q = (float*) *buffer;
size_t size = *samples * sizeof(float);
int j;
// struct timespec tm = { 0, 0 };
// Write into output ringbuffer
for ( j = 0; j < *channels; j++ )
{
if ( jack_ringbuffer_write_space( output_buffers[j] ) >= size )
jack_ringbuffer_write( output_buffers[j], (char*)( q + j * *samples ), size );
}
// Synchronization phase - wait for signal from Jack process
while ( jack_ringbuffer_read_space( input_buffers[ *channels - 1 ] ) < size ) ;
//pthread_cond_wait( output_ready, output_lock );
// Read from input ringbuffer
for ( j = 0; j < *channels; j++, q++ )
{
if ( jack_ringbuffer_read_space( input_buffers[j] ) >= size )
jack_ringbuffer_read( input_buffers[j], (char*)( q + j * *samples ), size );
}
// help jack_sync() indicate when we are rolling
mlt_position pos = mlt_frame_get_position( frame );
mlt_properties_set_position( filter_properties, "_last_pos", pos );
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_data( properties, "jackrack", NULL ) )
initialise_jack_ports( properties );
}
return frame;
}
static void filter_close( mlt_filter this )
{
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 );
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[16];
char *jack_client_name;
jack_status_t status = 0;
snprintf( name, sizeof( name ), "mlt%d", getpid() );
jack_client_t *jack_client = jack_client_open( name, JackNullOption, &status, NULL );
if ( jack_client )
{
if ( status & JackNameNotUnique )
{
jack_client_name = jack_get_client_name ( jack_client );
strcpy( name, jack_client_name );
}
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 );
jack_set_sync_callback( jack_client, jack_sync, this );
jack_set_sync_timeout( jack_client, 5000000 );
//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, mlt_pool_release, NULL );
mlt_properties_set_data( properties, "output_ready", output_ready, 0, mlt_pool_release, NULL );
mlt_properties_set_int( properties, "_sync", 1 );
mlt_properties_set_int( properties, "channels", 2 );
mlt_properties_set_int( properties, "_sync_state", SYNC_STATE_REQ_SEEK );
mlt_events_register( properties, "jack-started", (mlt_transmitter) jack_started_transmitter );
mlt_events_register( properties, "jack-starting", (mlt_transmitter) jack_starting_transmitter );
mlt_events_register( properties, "jack-stopped", (mlt_transmitter) jack_stopped_transmitter );
mlt_events_register( properties, "jack-start", NULL );
mlt_events_register( properties, "jack-stop", NULL );
mlt_events_register( properties, "jack-last-pos-req", NULL );
mlt_events_register( properties, "jack-seek", (mlt_transmitter) jack_seek_transmitter );
mlt_events_listen( properties, properties, "jack-start", (mlt_listener) on_jack_start );
mlt_events_listen( properties, properties, "jack-stop", (mlt_listener) on_jack_stop );
mlt_events_listen( properties, this, "jack-seek", (mlt_listener) on_jack_seek );
mlt_properties_set_position( properties, "_jack_seek", -1 );
}
else
{
mlt_log_error( NULL, "Failed to connect to JACK server\n" );
mlt_filter_close( this );
this = NULL;
}
}
return this;
}
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