2 * filter_jackrack.c -- filter audio through Jack and/or LADSPA plugins
3 * Copyright (C) 2004 Ushodaya Enterprises Limited
4 * Author: Dan Dennedy <dan@dennedy.org>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software Foundation,
18 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include "filter_jackrack.h"
23 #include <framework/mlt_frame.h>
27 #include <sys/types.h>
30 #include <jack/jack.h>
31 #include <jack/ringbuffer.h>
35 #include "jack_rack.h"
37 #define BUFFER_LEN 204800 * 3
39 static void initialise_jack_ports( mlt_properties properties
)
42 char mlt_name
[20], rack_name
[30];
43 jack_port_t
**port
= NULL
;
44 jack_client_t
*jack_client
= mlt_properties_get_data( properties
, "jack_client", NULL
);
45 jack_nframes_t jack_buffer_size
= jack_get_buffer_size( jack_client
);
47 // Propogate these for the Jack processing callback
48 int channels
= mlt_properties_get_int( properties
, "channels" );
51 if ( mlt_properties_get( properties
, "src" ) )
53 snprintf( rack_name
, sizeof( rack_name
), "jackrack%d", getpid() );
54 jack_rack_t
*jackrack
= jack_rack_new( rack_name
, mlt_properties_get_int( properties
, "channels" ) );
55 jack_rack_open_file( jackrack
, mlt_properties_get( properties
, "src" ) );
57 mlt_properties_set_data( properties
, "jackrack", jackrack
, 0, NULL
, NULL
);
58 mlt_properties_set( properties
, "_rack_client_name", rack_name
);
61 // Allocate buffers and ports
62 jack_ringbuffer_t
**output_buffers
= mlt_pool_alloc( sizeof( jack_ringbuffer_t
*) * channels
);
63 jack_ringbuffer_t
**input_buffers
= mlt_pool_alloc( sizeof( jack_ringbuffer_t
*) * channels
);
64 jack_port_t
**jack_output_ports
= mlt_pool_alloc( sizeof(jack_port_t
*) * channels
);
65 jack_port_t
**jack_input_ports
= mlt_pool_alloc( sizeof(jack_port_t
*) * channels
);
66 float **jack_output_buffers
= mlt_pool_alloc( sizeof(float *) * jack_buffer_size
);
67 float **jack_input_buffers
= mlt_pool_alloc( sizeof(float *) * jack_buffer_size
);
69 // Set properties - released inside filter_close
70 mlt_properties_set_data( properties
, "output_buffers", output_buffers
, sizeof( jack_ringbuffer_t
*) * channels
, NULL
, NULL
);
71 mlt_properties_set_data( properties
, "input_buffers", input_buffers
, sizeof( jack_ringbuffer_t
*) * channels
, NULL
, NULL
);
72 mlt_properties_set_data( properties
, "jack_output_ports", jack_output_ports
, sizeof( jack_port_t
*) * channels
, NULL
, NULL
);
73 mlt_properties_set_data( properties
, "jack_input_ports", jack_input_ports
, sizeof( jack_port_t
*) * channels
, NULL
, NULL
);
74 mlt_properties_set_data( properties
, "jack_output_buffers", jack_output_buffers
, sizeof( float *) * channels
, NULL
, NULL
);
75 mlt_properties_set_data( properties
, "jack_input_buffers", jack_input_buffers
, sizeof( float *) * channels
, NULL
, NULL
);
77 // Start Jack processing - required before registering ports
78 jack_activate( jack_client
);
80 // Register Jack ports
81 for ( i
= 0; i
< channels
; i
++ )
85 output_buffers
[i
] = jack_ringbuffer_create( BUFFER_LEN
* sizeof(float) );
86 input_buffers
[i
] = jack_ringbuffer_create( BUFFER_LEN
* sizeof(float) );
87 snprintf( mlt_name
, sizeof( mlt_name
), "obuf%d", i
);
88 mlt_properties_set_data( properties
, mlt_name
, output_buffers
[i
], BUFFER_LEN
* sizeof(float), NULL
, NULL
);
89 snprintf( mlt_name
, sizeof( mlt_name
), "ibuf%d", i
);
90 mlt_properties_set_data( properties
, mlt_name
, input_buffers
[i
], BUFFER_LEN
* sizeof(float), NULL
, NULL
);
92 for ( in
= 0; in
< 2; in
++ )
94 snprintf( mlt_name
, sizeof( mlt_name
), "%s_%d", in ?
"in" : "out", i
+ 1);
95 port
= ( in ?
&jack_input_ports
[i
] : &jack_output_ports
[i
] );
97 *port
= jack_port_register( jack_client
, mlt_name
, JACK_DEFAULT_AUDIO_TYPE
,
98 ( in ? JackPortIsInput
: JackPortIsOutput
) | JackPortIsTerminal
, 0 );
102 // Establish connections
103 for ( i
= 0; i
< channels
; i
++ )
106 for ( in
= 0; in
< 2; in
++ )
108 port
= ( in ?
&jack_input_ports
[i
] : &jack_output_ports
[i
] );
109 snprintf( mlt_name
, sizeof( mlt_name
), "%s", jack_port_name( *port
) );
111 snprintf( rack_name
, sizeof( rack_name
), "%s_%d", in ?
"in" : "out", i
+ 1 );
112 if ( mlt_properties_get( properties
, "_rack_client_name" ) )
113 snprintf( rack_name
, sizeof( rack_name
), "%s:%s_%d", mlt_properties_get( properties
, "_rack_client_name" ), in ?
"out" : "in", i
+ 1);
114 else if ( mlt_properties_get( properties
, rack_name
) )
115 snprintf( rack_name
, sizeof( rack_name
), "%s", mlt_properties_get( properties
, rack_name
) );
117 snprintf( rack_name
, sizeof( rack_name
), "%s:%s_%d", mlt_properties_get( properties
, "_client_name" ), in ?
"out" : "in", i
+ 1);
121 fprintf( stderr
, "jack connect %s to %s\n", rack_name
, mlt_name
);
122 jack_connect( jack_client
, rack_name
, mlt_name
);
126 fprintf( stderr
, "jack connect %s to %s\n", mlt_name
, rack_name
);
127 jack_connect( jack_client
, mlt_name
, rack_name
);
133 static int jack_process (jack_nframes_t frames
, void * data
)
135 mlt_filter filter
= (mlt_filter
) data
;
136 mlt_properties properties
= MLT_FILTER_PROPERTIES( filter
);
137 int channels
= mlt_properties_get_int( properties
, "channels" );
138 int frame_size
= mlt_properties_get_int( properties
, "_samples" ) * sizeof(float);
139 int sync
= mlt_properties_get_int( properties
, "_sync" );
142 static int total_size
= 0;
144 jack_ringbuffer_t
**output_buffers
= mlt_properties_get_data( properties
, "output_buffers", NULL
);
145 if ( output_buffers
== NULL
)
147 jack_ringbuffer_t
**input_buffers
= mlt_properties_get_data( properties
, "input_buffers", NULL
);
148 jack_port_t
**jack_output_ports
= mlt_properties_get_data( properties
, "jack_output_ports", NULL
);
149 jack_port_t
**jack_input_ports
= mlt_properties_get_data( properties
, "jack_input_ports", NULL
);
150 float **jack_output_buffers
= mlt_properties_get_data( properties
, "jack_output_buffers", NULL
);
151 float **jack_input_buffers
= mlt_properties_get_data( properties
, "jack_input_buffers", NULL
);
152 pthread_mutex_t
*output_lock
= mlt_properties_get_data( properties
, "output_lock", NULL
);
153 pthread_cond_t
*output_ready
= mlt_properties_get_data( properties
, "output_ready", NULL
);
155 for ( i
= 0; i
< channels
; i
++ )
157 size_t jack_size
= ( frames
* sizeof(float) );
160 // Send audio through out port
161 jack_output_buffers
[i
] = jack_port_get_buffer( jack_output_ports
[i
], frames
);
162 if ( ! jack_output_buffers
[i
] )
164 fprintf( stderr
, "%s: no jack buffer for output port %d\n", __FUNCTION__
, i
);
168 ring_size
= jack_ringbuffer_read_space( output_buffers
[i
] );
169 jack_ringbuffer_read( output_buffers
[i
], ( char * )jack_output_buffers
[i
], ring_size
< jack_size ? ring_size
: jack_size
);
171 // Return audio through in port
172 jack_input_buffers
[i
] = jack_port_get_buffer( jack_input_ports
[i
], frames
);
173 if ( ! jack_input_buffers
[i
] )
175 fprintf( stderr
, "%s: no jack buffer for input port %d\n", __FUNCTION__
, i
);
180 // Do not start returning audio until we have sent first mlt frame
181 if ( sync
&& i
== 0 && frame_size
> 0 )
182 total_size
+= ring_size
;
183 //fprintf(stderr, "sync %d frame_size %d ring_size %d jack_size %d\n", sync, frame_size, ring_size, jack_size );
185 if ( ! sync
|| ( frame_size
> 0 && total_size
>= frame_size
) )
187 ring_size
= jack_ringbuffer_write_space( input_buffers
[i
] );
188 jack_ringbuffer_write( input_buffers
[i
], ( char * )jack_input_buffers
[i
], ring_size
< jack_size ? ring_size
: jack_size
);
192 // Tell mlt that audio is available
193 pthread_mutex_lock( output_lock
);
194 pthread_cond_signal( output_ready
);
195 pthread_mutex_unlock( output_lock
);
198 mlt_properties_set_int( properties
, "_sync", 0 );
210 static int jackrack_get_audio( mlt_frame frame
, int16_t **buffer
, mlt_audio_format
*format
, int *frequency
, int *channels
, int *samples
)
212 // Get the filter service
213 mlt_filter filter
= mlt_frame_pop_audio( frame
);
215 // Get the filter properties
216 mlt_properties filter_properties
= MLT_FILTER_PROPERTIES( filter
);
218 int jack_frequency
= mlt_properties_get_int( filter_properties
, "_sample_rate" );
220 // Get the producer's audio
221 mlt_frame_get_audio( frame
, buffer
, format
, &jack_frequency
, channels
, samples
);
223 // TODO: Deal with sample rate differences
224 if ( *frequency
!= jack_frequency
)
225 fprintf( stderr
, "mismatching frequencies in filter jackrack\n" );
226 *frequency
= jack_frequency
;
228 // Initialise Jack ports and connections if needed
229 if ( mlt_properties_get_int( filter_properties
, "_samples" ) == 0 )
230 mlt_properties_set_int( filter_properties
, "_samples", *samples
);
232 // Get the filter-specific properties
233 jack_ringbuffer_t
**output_buffers
= mlt_properties_get_data( filter_properties
, "output_buffers", NULL
);
234 jack_ringbuffer_t
**input_buffers
= mlt_properties_get_data( filter_properties
, "input_buffers", NULL
);
235 // pthread_mutex_t *output_lock = mlt_properties_get_data( filter_properties, "output_lock", NULL );
236 // pthread_cond_t *output_ready = mlt_properties_get_data( filter_properties, "output_ready", NULL );
239 int16_t *q
= *buffer
;
240 float sample
[ 2 ][ 10000 ];
242 // struct timespec tm = { 0, 0 };
244 // Convert to floats and write into output ringbuffer
245 if ( jack_ringbuffer_write_space( output_buffers
[0] ) >= ( *samples
* sizeof(float) ) )
247 for ( i
= 0; i
< *samples
; i
++ )
248 for ( j
= 0; j
< *channels
; j
++ )
249 sample
[ j
][ i
] = ( float )( *q
++ ) / 32768.0;
251 for ( j
= 0; j
< *channels
; j
++ )
252 jack_ringbuffer_write( output_buffers
[j
], ( char * )sample
[ j
], *samples
* sizeof(float) );
255 // Synchronization phase - wait for signal from Jack process
256 while ( jack_ringbuffer_read_space( input_buffers
[ *channels
- 1 ] ) < ( *samples
* sizeof(float) ) ) ;
257 //pthread_cond_wait( output_ready, output_lock );
259 // Read from input ringbuffer and convert from floats
260 if ( jack_ringbuffer_read_space( input_buffers
[0] ) >= ( *samples
* sizeof(float) ) )
262 // Initialise to silence, but repeat last frame if available in case of
264 for ( j
= 0; j
< *channels
; j
++ )
265 jack_ringbuffer_read( input_buffers
[j
], ( char * )sample
[ j
], *samples
* sizeof(float) );
268 for ( i
= 0; i
< *samples
; i
++ )
269 for ( j
= 0; j
< *channels
; j
++ )
271 if ( sample
[ j
][ i
] > 1.0 )
272 sample
[ j
][ i
] = 1.0;
273 else if ( sample
[ j
][ i
] < -1.0 )
274 sample
[ j
][ i
] = -1.0;
276 if ( sample
[ j
][ i
] > 0 )
277 *q
++ = 32767 * sample
[ j
][ i
];
279 *q
++ = 32768 * sample
[ j
][ i
];
287 /** Filter processing.
290 static mlt_frame
filter_process( mlt_filter
this, mlt_frame frame
)
293 mlt_properties properties
= MLT_FILTER_PROPERTIES( this );
294 mlt_frame_push_audio( frame
, this );
295 mlt_frame_push_audio( frame
, jackrack_get_audio
);
297 if ( mlt_properties_get_int( properties
, "_sync" ) )
298 initialise_jack_ports( properties
);
305 static void filter_close( mlt_filter
this )
309 mlt_properties properties
= MLT_FILTER_PROPERTIES( this );
310 jack_client_t
*jack_client
= mlt_properties_get_data( properties
, "jack_client", NULL
);
312 jack_deactivate( jack_client
);
313 jack_client_close( jack_client
);
314 for ( i
= 0; i
< mlt_properties_get_int( properties
, "channels" ); i
++ )
316 snprintf( mlt_name
, sizeof( mlt_name
), "obuf%d", i
);
317 jack_ringbuffer_free( mlt_properties_get_data( properties
, mlt_name
, NULL
) );
318 snprintf( mlt_name
, sizeof( mlt_name
), "ibuf%d", i
);
319 jack_ringbuffer_free( mlt_properties_get_data( properties
, mlt_name
, NULL
) );
321 mlt_pool_release( mlt_properties_get_data( properties
, "output_buffers", NULL
) );
322 mlt_pool_release( mlt_properties_get_data( properties
, "input_buffers", NULL
) );
323 mlt_pool_release( mlt_properties_get_data( properties
, "jack_output_ports", NULL
) );
324 mlt_pool_release( mlt_properties_get_data( properties
, "jack_input_ports", NULL
) );
325 mlt_pool_release( mlt_properties_get_data( properties
, "jack_output_buffers", NULL
) );
326 mlt_pool_release( mlt_properties_get_data( properties
, "jack_input_buffers", NULL
) );
327 mlt_pool_release( mlt_properties_get_data( properties
, "output_lock", NULL
) );
328 mlt_pool_release( mlt_properties_get_data( properties
, "output_ready", NULL
) );
330 jack_rack_t
*jackrack
= mlt_properties_get_data( properties
, "jackrack", NULL
);
331 jack_rack_destroy( jackrack
);
333 this->parent
.close
= NULL
;
334 mlt_service_close( &this->parent
);
337 /** Constructor for the filter.
340 mlt_filter
filter_jackrack_init( char *arg
)
342 mlt_filter
this = mlt_filter_new( );
347 snprintf( name
, sizeof( name
), "mlt%d", getpid() );
348 jack_client_t
*jack_client
= jack_client_new( name
);
351 mlt_properties properties
= MLT_FILTER_PROPERTIES( this );
352 pthread_mutex_t
*output_lock
= mlt_pool_alloc( sizeof( pthread_mutex_t
) );
353 pthread_cond_t
*output_ready
= mlt_pool_alloc( sizeof( pthread_cond_t
) );
355 jack_set_process_callback( jack_client
, jack_process
, this );
356 //TODO: jack_on_shutdown( jack_client, jack_shutdown_cb, this );
357 this->process
= filter_process
;
358 this->close
= filter_close
;
359 pthread_mutex_init( output_lock
, NULL
);
360 pthread_cond_init( output_ready
, NULL
);
362 mlt_properties_set( properties
, "src", arg
);
363 mlt_properties_set( properties
, "_client_name", name
);
364 mlt_properties_set_data( properties
, "jack_client", jack_client
, 0, NULL
, NULL
);
365 mlt_properties_set_int( properties
, "_sample_rate", jack_get_sample_rate( jack_client
) );
366 mlt_properties_set_data( properties
, "output_lock", output_lock
, 0, NULL
, NULL
);
367 mlt_properties_set_data( properties
, "output_ready", output_ready
, 0, NULL
, NULL
);
368 mlt_properties_set_int( properties
, "_sync", 1 );
369 mlt_properties_set_int( properties
, "channels", 2 );