4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
33 #include "protocol-esound.h"
37 #include "sink-input.h"
39 #include "source-output.h"
43 #include "sample-util.h"
50 #define DEFAULT_COOKIE_FILE ".esd_auth"
52 #define PLAYBACK_BUFFER_SECONDS (.5)
53 #define PLAYBACK_BUFFER_FRAGMENTS (10)
54 #define RECORD_BUFFER_SECONDS (5)
55 #define RECORD_BUFFER_FRAGMENTS (100)
57 #define MAX_CACHE_SAMPLE_SIZE (1024000)
59 #define SCACHE_PREFIX "esound."
61 /* This is heavily based on esound's code */
66 struct pa_protocol_esound
*protocol
;
67 struct pa_iochannel
*io
;
68 struct pa_client
*client
;
69 int authorized
, swap_byte_order
;
71 size_t write_data_alloc
, write_data_index
, write_data_length
;
73 size_t read_data_alloc
, read_data_length
;
75 esd_client_state_t state
;
76 struct pa_sink_input
*sink_input
;
77 struct pa_source_output
*source_output
;
78 struct pa_memblockq
*input_memblockq
, *output_memblockq
;
79 struct pa_defer_event
*defer_event
;
82 struct pa_memblock
*current_memblock
;
83 size_t memblock_index
, fragment_size
;
87 struct pa_memchunk memchunk
;
89 struct pa_sample_spec sample_spec
;
93 struct pa_protocol_esound
{
95 struct pa_module
*module
;
97 struct pa_socket_server
*server
;
98 struct pa_idxset
*connections
;
99 char *sink_name
, *source_name
;
101 uint8_t esd_key
[ESD_KEY_LEN
];
104 typedef struct proto_handler
{
106 int (*proc
)(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
107 const char *description
;
108 } esd_proto_handler_info_t
;
110 static void sink_input_drop_cb(struct pa_sink_input
*i
, const struct pa_memchunk
*chunk
, size_t length
);
111 static int sink_input_peek_cb(struct pa_sink_input
*i
, struct pa_memchunk
*chunk
);
112 static void sink_input_kill_cb(struct pa_sink_input
*i
);
113 static pa_usec_t
sink_input_get_latency_cb(struct pa_sink_input
*i
);
114 static pa_usec_t
source_output_get_latency_cb(struct pa_source_output
*o
);
116 static void source_output_push_cb(struct pa_source_output
*o
, const struct pa_memchunk
*chunk
);
117 static void source_output_kill_cb(struct pa_source_output
*o
);
119 static int esd_proto_connect(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
120 static int esd_proto_stream_play(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
121 static int esd_proto_stream_record(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
122 static int esd_proto_get_latency(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
123 static int esd_proto_server_info(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
124 static int esd_proto_all_info(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
125 static int esd_proto_stream_pan(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
126 static int esd_proto_sample_cache(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
127 static int esd_proto_sample_free_or_play(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
128 static int esd_proto_sample_get_id(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
129 static int esd_proto_standby_or_resume(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
);
131 /* the big map of protocol handler info */
132 static struct proto_handler proto_map
[ESD_PROTO_MAX
] = {
133 { ESD_KEY_LEN
+ sizeof(int), esd_proto_connect
, "connect" },
134 { ESD_KEY_LEN
+ sizeof(int), NULL
, "lock" },
135 { ESD_KEY_LEN
+ sizeof(int), NULL
, "unlock" },
137 { ESD_NAME_MAX
+ 2 * sizeof(int), esd_proto_stream_play
, "stream play" },
138 { ESD_NAME_MAX
+ 2 * sizeof(int), esd_proto_stream_record
, "stream rec" },
139 { ESD_NAME_MAX
+ 2 * sizeof(int), esd_proto_stream_record
, "stream mon" },
141 { ESD_NAME_MAX
+ 3 * sizeof(int), esd_proto_sample_cache
, "sample cache" }, /* 6 */
142 { sizeof(int), esd_proto_sample_free_or_play
, "sample free" },
143 { sizeof(int), esd_proto_sample_free_or_play
, "sample play" }, /* 8 */
144 { sizeof(int), NULL
, "sample loop" },
145 { sizeof(int), NULL
, "sample stop" },
146 { -1, NULL
, "TODO: sample kill" },
148 { ESD_KEY_LEN
+ sizeof(int), esd_proto_standby_or_resume
, "standby" }, /* NOOP! */
149 { ESD_KEY_LEN
+ sizeof(int), esd_proto_standby_or_resume
, "resume" }, /* NOOP! */ /* 13 */
151 { ESD_NAME_MAX
, esd_proto_sample_get_id
, "sample getid" }, /* 14 */
152 { ESD_NAME_MAX
+ 2 * sizeof(int), NULL
, "stream filter" },
154 { sizeof(int), esd_proto_server_info
, "server info" },
155 { sizeof(int), esd_proto_all_info
, "all info" },
156 { -1, NULL
, "TODO: subscribe" },
157 { -1, NULL
, "TODO: unsubscribe" },
159 { 3 * sizeof(int), esd_proto_stream_pan
, "stream pan"},
160 { 3 * sizeof(int), NULL
, "sample pan" },
162 { sizeof(int), NULL
, "standby mode" },
163 { 0, esd_proto_get_latency
, "get latency" }
167 static void connection_free(struct connection
*c
) {
169 pa_idxset_remove_by_data(c
->protocol
->connections
, c
, NULL
);
171 if (c
->state
== ESD_STREAMING_DATA
)
172 c
->protocol
->n_player
--;
174 pa_client_free(c
->client
);
177 pa_sink_input_disconnect(c
->sink_input
);
178 pa_sink_input_unref(c
->sink_input
);
181 if (c
->source_output
) {
182 pa_source_output_disconnect(c
->source_output
);
183 pa_source_output_unref(c
->source_output
);
186 if (c
->input_memblockq
)
187 pa_memblockq_free(c
->input_memblockq
);
188 if (c
->output_memblockq
)
189 pa_memblockq_free(c
->output_memblockq
);
191 if (c
->playback
.current_memblock
)
192 pa_memblock_unref(c
->playback
.current_memblock
);
194 pa_xfree(c
->read_data
);
195 pa_xfree(c
->write_data
);
197 pa_iochannel_free(c
->io
);
200 c
->protocol
->core
->mainloop
->defer_free(c
->defer_event
);
202 if (c
->scache
.memchunk
.memblock
)
203 pa_memblock_unref(c
->scache
.memchunk
.memblock
);
204 pa_xfree(c
->scache
.name
);
209 static void* connection_write(struct connection
*c
, size_t length
) {
213 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->defer_enable
);
214 c
->protocol
->core
->mainloop
->defer_enable(c
->defer_event
, 1);
216 t
= c
->write_data_length
+length
;
218 if (c
->write_data_alloc
< t
)
219 c
->write_data
= pa_xrealloc(c
->write_data
, c
->write_data_alloc
= t
);
221 assert(c
->write_data
);
223 i
= c
->write_data_length
;
224 c
->write_data_length
+= length
;
226 return (uint8_t*) c
->write_data
+i
;
229 static void format_esd2native(int format
, struct pa_sample_spec
*ss
) {
232 ss
->channels
= ((format
& ESD_MASK_CHAN
) == ESD_STEREO
) ? 2 : 1;
233 ss
->format
= ((format
& ESD_MASK_BITS
) == ESD_BITS16
) ? PA_SAMPLE_S16NE
: PA_SAMPLE_U8
;
236 static int format_native2esd(struct pa_sample_spec
*ss
) {
239 format
= (ss
->format
== PA_SAMPLE_U8
) ? ESD_BITS8
: ESD_BITS16
;
240 format
|= (ss
->channels
>= 2) ? ESD_STEREO
: ESD_MONO
;
245 /*** esound commands ***/
247 static int esd_proto_connect(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
250 assert(length
== (ESD_KEY_LEN
+ sizeof(uint32_t)));
252 if (!c
->authorized
) {
253 if (memcmp(data
, c
->protocol
->esd_key
, ESD_KEY_LEN
) != 0) {
254 pa_log(__FILE__
": kicked client with invalid authorization key.\n");
261 ekey
= *(uint32_t*)((uint8_t*) data
+ESD_KEY_LEN
);
262 if (ekey
== ESD_ENDIAN_KEY
)
263 c
->swap_byte_order
= 0;
264 else if (ekey
== ESD_SWAP_ENDIAN_KEY
)
265 c
->swap_byte_order
= 1;
267 pa_log(__FILE__
": client sent invalid endian key\n");
271 ok
= connection_write(c
, sizeof(int));
277 static int esd_proto_stream_play(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
278 char name
[ESD_NAME_MAX
];
280 struct pa_sink
*sink
;
281 struct pa_sample_spec ss
;
283 assert(c
&& length
== (sizeof(int)*2+ESD_NAME_MAX
));
285 format
= maybe_swap_endian_32(c
->swap_byte_order
, *(int*)data
);
286 rate
= maybe_swap_endian_32(c
->swap_byte_order
, *((int*)data
+ 1));
289 format_esd2native(format
, &ss
);
291 if (!pa_sample_spec_valid(&ss
))
294 if (!(sink
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->sink_name
, PA_NAMEREG_SINK
, 1))) {
295 pa_log(__FILE__
": No output sink\n");
299 strncpy(name
, (char*) data
+ sizeof(int)*2, sizeof(name
));
300 name
[sizeof(name
)-1] = 0;
302 pa_client_set_name(c
->client
, name
);
304 assert(!c
->input_memblockq
);
306 l
= (size_t) (pa_bytes_per_second(&ss
)*PLAYBACK_BUFFER_SECONDS
);
307 c
->input_memblockq
= pa_memblockq_new(l
, 0, pa_frame_size(&ss
), l
/2, l
/PLAYBACK_BUFFER_FRAGMENTS
, c
->protocol
->core
->memblock_stat
);
308 assert(c
->input_memblockq
);
309 pa_iochannel_socket_set_rcvbuf(c
->io
, l
/PLAYBACK_BUFFER_FRAGMENTS
*2);
310 c
->playback
.fragment_size
= l
/10;
312 assert(!c
->sink_input
);
313 c
->sink_input
= pa_sink_input_new(sink
, name
, &ss
, 0, -1);
314 assert(c
->sink_input
);
316 c
->sink_input
->owner
= c
->protocol
->module
;
317 c
->sink_input
->client
= c
->client
;
318 c
->sink_input
->peek
= sink_input_peek_cb
;
319 c
->sink_input
->drop
= sink_input_drop_cb
;
320 c
->sink_input
->kill
= sink_input_kill_cb
;
321 c
->sink_input
->get_latency
= sink_input_get_latency_cb
;
322 c
->sink_input
->userdata
= c
;
324 c
->state
= ESD_STREAMING_DATA
;
326 c
->protocol
->n_player
++;
331 static int esd_proto_stream_record(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
332 char name
[ESD_NAME_MAX
];
334 struct pa_source
*source
;
335 struct pa_sample_spec ss
;
337 assert(c
&& length
== (sizeof(int)*2+ESD_NAME_MAX
));
339 format
= maybe_swap_endian_32(c
->swap_byte_order
, *(int*)data
);
340 rate
= maybe_swap_endian_32(c
->swap_byte_order
, *((int*)data
+ 1));
343 format_esd2native(format
, &ss
);
345 if (!pa_sample_spec_valid(&ss
))
348 if (request
== ESD_PROTO_STREAM_MON
) {
349 struct pa_sink
* sink
;
351 if (!(sink
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->sink_name
, PA_NAMEREG_SINK
, 1)))
354 if (!(source
= sink
->monitor_source
))
357 assert(request
== ESD_PROTO_STREAM_REC
);
359 if (!(source
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->source_name
, PA_NAMEREG_SOURCE
, 1)))
363 strncpy(name
, (char*) data
+ sizeof(int)*2, sizeof(name
));
364 name
[sizeof(name
)-1] = 0;
366 pa_client_set_name(c
->client
, name
);
368 assert(!c
->output_memblockq
);
370 l
= (size_t) (pa_bytes_per_second(&ss
)*RECORD_BUFFER_SECONDS
);
371 c
->output_memblockq
= pa_memblockq_new(l
, 0, pa_frame_size(&ss
), 0, 0, c
->protocol
->core
->memblock_stat
);
372 assert(c
->output_memblockq
);
373 pa_iochannel_socket_set_sndbuf(c
->io
, l
/RECORD_BUFFER_FRAGMENTS
*2);
375 assert(!c
->source_output
);
376 c
->source_output
= pa_source_output_new(source
, name
, &ss
, -1);
377 assert(c
->source_output
);
379 c
->source_output
->owner
= c
->protocol
->module
;
380 c
->source_output
->client
= c
->client
;
381 c
->source_output
->push
= source_output_push_cb
;
382 c
->source_output
->kill
= source_output_kill_cb
;
383 c
->source_output
->get_latency
= source_output_get_latency_cb
;
384 c
->source_output
->userdata
= c
;
386 c
->state
= ESD_STREAMING_DATA
;
388 c
->protocol
->n_player
++;
393 static int esd_proto_get_latency(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
394 struct pa_sink
*sink
;
396 assert(c
&& !data
&& length
== 0);
398 if (!(sink
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->sink_name
, PA_NAMEREG_SINK
, 1)))
401 double usec
= pa_sink_get_latency(sink
);
402 usec
+= PLAYBACK_BUFFER_SECONDS
*1000000; /* A better estimation would be a good idea! */
403 latency
= (int) ((usec
*44100)/1000000);
406 lag
= connection_write(c
, sizeof(int));
408 *lag
= c
->swap_byte_order
? swap_endian_32(latency
) : latency
;
412 static int esd_proto_server_info(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
413 int rate
= 44100, format
= ESD_STEREO
|ESD_BITS16
;
415 struct pa_sink
*sink
;
416 assert(c
&& data
&& length
== sizeof(int));
418 if ((sink
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->sink_name
, PA_NAMEREG_SINK
, 1))) {
419 rate
= sink
->sample_spec
.rate
;
420 format
= format_native2esd(&sink
->sample_spec
);
423 response
= connection_write(c
, sizeof(int)*3);
426 *(response
++) = maybe_swap_endian_32(c
->swap_byte_order
, rate
);
427 *(response
++) = maybe_swap_endian_32(c
->swap_byte_order
, format
);
431 static int esd_proto_all_info(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
434 struct connection
*conn
;
435 size_t index
= PA_IDXSET_INVALID
;
437 assert(c
&& data
&& length
== sizeof(int));
439 if (esd_proto_server_info(c
, request
, data
, length
) < 0)
442 k
= sizeof(int)*5+ESD_NAME_MAX
;
443 s
= sizeof(int)*6+ESD_NAME_MAX
;
444 nsamples
= c
->protocol
->core
->scache
? pa_idxset_ncontents(c
->protocol
->core
->scache
) : 0;
445 response
= connection_write(c
, (t
= s
*(nsamples
+1) + k
*(c
->protocol
->n_player
+1)));
448 for (conn
= pa_idxset_first(c
->protocol
->connections
, &index
); conn
; conn
= pa_idxset_next(c
->protocol
->connections
, &index
)) {
449 int format
= ESD_BITS16
| ESD_STEREO
, rate
= 44100, volume
= 0xFF;
451 if (conn
->state
!= ESD_STREAMING_DATA
)
456 if (conn
->sink_input
) {
457 rate
= conn
->sink_input
->sample_spec
.rate
;
458 volume
= (conn
->sink_input
->volume
*0xFF)/0x100;
459 format
= format_native2esd(&conn
->sink_input
->sample_spec
);
463 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, (int) (conn
->index
+1));
464 response
+= sizeof(int);
467 assert(conn
->client
);
468 strncpy((char*) response
, conn
->client
->name
, ESD_NAME_MAX
);
469 response
+= ESD_NAME_MAX
;
472 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, rate
);
473 response
+= sizeof(int);
476 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, volume
);
477 response
+= sizeof(int);
480 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, volume
);
481 response
+= sizeof(int);
484 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, format
);
485 response
+= sizeof(int);
490 assert(t
== s
*(nsamples
+1)+k
);
491 memset(response
, 0, k
);
496 struct pa_scache_entry
*ce
;
498 index
= PA_IDXSET_INVALID
;
499 for (ce
= pa_idxset_first(c
->protocol
->core
->scache
, &index
); ce
; ce
= pa_idxset_next(c
->protocol
->core
->scache
, &index
)) {
503 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, (int) (ce
->index
+1));
504 response
+= sizeof(int);
507 if (strncmp(ce
->name
, SCACHE_PREFIX
, sizeof(SCACHE_PREFIX
)-1) == 0)
508 strncpy((char*) response
, ce
->name
+sizeof(SCACHE_PREFIX
)-1, ESD_NAME_MAX
);
510 snprintf((char*) response
, ESD_NAME_MAX
, "native.%s", ce
->name
);
511 response
+= ESD_NAME_MAX
;
514 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, ce
->sample_spec
.rate
);
515 response
+= sizeof(int);
518 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, (ce
->volume
*0xFF)/0x100);
519 response
+= sizeof(int);
522 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, (ce
->volume
*0xFF)/0x100);
523 response
+= sizeof(int);
526 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, format_native2esd(&ce
->sample_spec
));
527 response
+= sizeof(int);
530 *((int*) response
) = maybe_swap_endian_32(c
->swap_byte_order
, (int) ce
->memchunk
.length
);
531 response
+= sizeof(int);
538 memset(response
, 0, s
);
543 static int esd_proto_stream_pan(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
545 uint32_t index
, volume
;
546 struct connection
*conn
;
547 assert(c
&& data
&& length
== sizeof(int)*3);
549 index
= (uint32_t) maybe_swap_endian_32(c
->swap_byte_order
, *(int*)data
)-1;
550 volume
= (uint32_t) maybe_swap_endian_32(c
->swap_byte_order
, *((int*)data
+ 1));
551 volume
= (volume
*0x100)/0xFF;
553 ok
= connection_write(c
, sizeof(int));
556 if ((conn
= pa_idxset_get_by_index(c
->protocol
->connections
, index
))) {
557 assert(conn
->sink_input
);
558 conn
->sink_input
->volume
= volume
;
566 static int esd_proto_sample_cache(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
567 struct pa_sample_spec ss
;
572 char name
[ESD_NAME_MAX
+sizeof(SCACHE_PREFIX
)-1];
573 assert(c
&& data
&& length
== (ESD_NAME_MAX
+3*sizeof(int)));
575 format
= maybe_swap_endian_32(c
->swap_byte_order
, *(int*)data
);
576 rate
= maybe_swap_endian_32(c
->swap_byte_order
, *((int*)data
+ 1));
579 format_esd2native(format
, &ss
);
581 sc_length
= (size_t) maybe_swap_endian_32(c
->swap_byte_order
, (*((int*)data
+ 2)));
583 if (sc_length
>= MAX_CACHE_SAMPLE_SIZE
)
586 strcpy(name
, SCACHE_PREFIX
);
587 strncpy(name
+sizeof(SCACHE_PREFIX
)-1, (char*) data
+3*sizeof(int), ESD_NAME_MAX
);
588 name
[sizeof(name
)-1] = 0;
590 assert(!c
->scache
.memchunk
.memblock
);
591 c
->scache
.memchunk
.memblock
= pa_memblock_new(sc_length
, c
->protocol
->core
->memblock_stat
);
592 c
->scache
.memchunk
.index
= 0;
593 c
->scache
.memchunk
.length
= sc_length
;
594 c
->scache
.sample_spec
= ss
;
595 assert(!c
->scache
.name
);
596 c
->scache
.name
= pa_xstrdup(name
);
598 c
->state
= ESD_CACHING_SAMPLE
;
600 pa_scache_add_item(c
->protocol
->core
, c
->scache
.name
, NULL
, NULL
, &index
);
602 ok
= connection_write(c
, sizeof(int));
610 static int esd_proto_sample_get_id(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
613 char name
[ESD_NAME_MAX
+sizeof(SCACHE_PREFIX
)-1];
614 assert(c
&& data
&& length
== ESD_NAME_MAX
);
616 ok
= connection_write(c
, sizeof(int));
621 strcpy(name
, SCACHE_PREFIX
);
622 strncpy(name
+sizeof(SCACHE_PREFIX
)-1, data
, ESD_NAME_MAX
);
623 name
[sizeof(name
)-1] = 0;
625 if ((index
= pa_scache_get_id_by_name(c
->protocol
->core
, name
)) != PA_IDXSET_INVALID
)
626 *ok
= (int) index
+1;
631 static int esd_proto_sample_free_or_play(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
635 assert(c
&& data
&& length
== sizeof(int));
637 index
= (uint32_t) maybe_swap_endian_32(c
->swap_byte_order
, *(int*)data
)-1;
639 ok
= connection_write(c
, sizeof(int));
644 if ((name
= pa_scache_get_name_by_id(c
->protocol
->core
, index
))) {
645 if (request
== ESD_PROTO_SAMPLE_PLAY
) {
646 struct pa_sink
*sink
;
648 if ((sink
= pa_namereg_get(c
->protocol
->core
, c
->protocol
->sink_name
, PA_NAMEREG_SINK
, 1)))
649 if (pa_scache_play_item(c
->protocol
->core
, name
, sink
, PA_VOLUME_NORM
) >= 0)
652 assert(request
== ESD_PROTO_SAMPLE_FREE
);
654 if (pa_scache_remove_item(c
->protocol
->core
, name
) >= 0)
662 static int esd_proto_standby_or_resume(struct connection
*c
, esd_proto_t request
, const void *data
, size_t length
) {
664 ok
= connection_write(c
, sizeof(int)*2);
671 /*** client callbacks ***/
673 static void client_kill_cb(struct pa_client
*c
) {
674 assert(c
&& c
->userdata
);
675 connection_free(c
->userdata
);
678 /*** pa_iochannel callbacks ***/
680 static int do_read(struct connection
*c
) {
683 if (c
->state
== ESD_NEXT_REQUEST
) {
685 assert(c
->read_data_length
< sizeof(c
->request
));
687 if ((r
= pa_iochannel_read(c
->io
, ((uint8_t*) &c
->request
) + c
->read_data_length
, sizeof(c
->request
) - c
->read_data_length
)) <= 0) {
688 pa_log(__FILE__
": read() failed: %s\n", r
== 0 ? "EOF" : strerror(errno
));
692 if ((c
->read_data_length
+= r
) >= sizeof(c
->request
)) {
693 struct proto_handler
*handler
;
695 if (c
->swap_byte_order
)
696 c
->request
= swap_endian_32(c
->request
);
698 if (c
->request
< ESD_PROTO_CONNECT
|| c
->request
> ESD_PROTO_MAX
) {
699 pa_log(__FILE__
": recieved invalid request.\n");
703 handler
= proto_map
+c
->request
;
705 pa_log(__FILE__
": executing request #%u\n", c
->request
);
707 if (!handler
->proc
) {
708 pa_log(__FILE__
": recieved unimplemented request #%u.\n", c
->request
);
712 if (handler
->data_length
== 0) {
713 c
->read_data_length
= 0;
715 if (handler
->proc(c
, c
->request
, NULL
, 0) < 0)
719 if (c
->read_data_alloc
< handler
->data_length
)
720 c
->read_data
= pa_xrealloc(c
->read_data
, c
->read_data_alloc
= handler
->data_length
);
721 assert(c
->read_data
);
723 c
->state
= ESD_NEEDS_REQDATA
;
724 c
->read_data_length
= 0;
728 } else if (c
->state
== ESD_NEEDS_REQDATA
) {
730 struct proto_handler
*handler
= proto_map
+c
->request
;
732 assert(handler
->proc
);
734 assert(c
->read_data
&& c
->read_data_length
< handler
->data_length
);
736 if ((r
= pa_iochannel_read(c
->io
, (uint8_t*) c
->read_data
+ c
->read_data_length
, handler
->data_length
- c
->read_data_length
)) <= 0) {
737 pa_log(__FILE__
": read() failed: %s\n", r
== 0 ? "EOF" : strerror(errno
));
741 if ((c
->read_data_length
+= r
) >= handler
->data_length
) {
742 size_t l
= c
->read_data_length
;
743 assert(handler
->proc
);
745 c
->state
= ESD_NEXT_REQUEST
;
746 c
->read_data_length
= 0;
748 if (handler
->proc(c
, c
->request
, c
->read_data
, l
) < 0)
751 } else if (c
->state
== ESD_CACHING_SAMPLE
) {
754 assert(c
->scache
.memchunk
.memblock
&& c
->scache
.name
&& c
->scache
.memchunk
.index
< c
->scache
.memchunk
.length
);
756 if ((r
= pa_iochannel_read(c
->io
, (uint8_t*) c
->scache
.memchunk
.memblock
->data
+c
->scache
.memchunk
.index
, c
->scache
.memchunk
.length
-c
->scache
.memchunk
.index
)) <= 0) {
757 pa_log(__FILE__
": read() failed: %s\n", r
== 0 ? "EOF" : strerror(errno
));
761 c
->scache
.memchunk
.index
+= r
;
762 assert(c
->scache
.memchunk
.index
<= c
->scache
.memchunk
.length
);
764 if (c
->scache
.memchunk
.index
== c
->scache
.memchunk
.length
) {
768 c
->scache
.memchunk
.index
= 0;
769 pa_scache_add_item(c
->protocol
->core
, c
->scache
.name
, &c
->scache
.sample_spec
, &c
->scache
.memchunk
, &index
);
771 pa_memblock_unref(c
->scache
.memchunk
.memblock
);
772 c
->scache
.memchunk
.memblock
= NULL
;
773 c
->scache
.memchunk
.index
= c
->scache
.memchunk
.length
= 0;
775 pa_xfree(c
->scache
.name
);
776 c
->scache
.name
= NULL
;
778 c
->state
= ESD_NEXT_REQUEST
;
780 ok
= connection_write(c
, sizeof(int));
785 } else if (c
->state
== ESD_STREAMING_DATA
&& c
->sink_input
) {
786 struct pa_memchunk chunk
;
790 assert(c
->input_memblockq
);
792 if (!(l
= pa_memblockq_missing(c
->input_memblockq
)))
795 if (l
> c
->playback
.fragment_size
)
796 l
= c
->playback
.fragment_size
;
798 if (c
->playback
.current_memblock
)
799 if (c
->playback
.current_memblock
->length
- c
->playback
.memblock_index
< l
) {
800 pa_memblock_unref(c
->playback
.current_memblock
);
801 c
->playback
.current_memblock
= NULL
;
802 c
->playback
.memblock_index
= 0;
805 if (!c
->playback
.current_memblock
) {
806 c
->playback
.current_memblock
= pa_memblock_new(c
->playback
.fragment_size
*2, c
->protocol
->core
->memblock_stat
);
807 assert(c
->playback
.current_memblock
&& c
->playback
.current_memblock
->length
>= l
);
808 c
->playback
.memblock_index
= 0;
811 if ((r
= pa_iochannel_read(c
->io
, (uint8_t*) c
->playback
.current_memblock
->data
+c
->playback
.memblock_index
, l
)) <= 0) {
812 pa_log(__FILE__
": read() failed: %s\n", r
== 0 ? "EOF" : strerror(errno
));
816 chunk
.memblock
= c
->playback
.current_memblock
;
817 chunk
.index
= c
->playback
.memblock_index
;
819 assert(chunk
.memblock
);
821 c
->playback
.memblock_index
+= r
;
823 assert(c
->input_memblockq
);
824 pa_memblockq_push_align(c
->input_memblockq
, &chunk
, 0);
825 assert(c
->sink_input
);
826 pa_sink_notify(c
->sink_input
->sink
);
832 static int do_write(struct connection
*c
) {
835 if (c
->write_data_length
) {
838 assert(c
->write_data_index
< c
->write_data_length
);
839 if ((r
= pa_iochannel_write(c
->io
, (uint8_t*) c
->write_data
+c
->write_data_index
, c
->write_data_length
-c
->write_data_index
)) < 0) {
840 pa_log(__FILE__
": write() failed: %s\n", strerror(errno
));
844 if ((c
->write_data_index
+=r
) >= c
->write_data_length
)
845 c
->write_data_length
= c
->write_data_index
= 0;
847 } else if (c
->state
== ESD_STREAMING_DATA
&& c
->source_output
) {
848 struct pa_memchunk chunk
;
851 assert(c
->output_memblockq
);
852 if (pa_memblockq_peek(c
->output_memblockq
, &chunk
) < 0)
855 assert(chunk
.memblock
&& chunk
.length
);
857 if ((r
= pa_iochannel_write(c
->io
, (uint8_t*) chunk
.memblock
->data
+chunk
.index
, chunk
.length
)) < 0) {
858 pa_memblock_unref(chunk
.memblock
);
859 pa_log(__FILE__
": write(): %s\n", strerror(errno
));
863 pa_memblockq_drop(c
->output_memblockq
, &chunk
, r
);
864 pa_memblock_unref(chunk
.memblock
);
870 static void do_work(struct connection
*c
) {
873 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->defer_enable
);
874 c
->protocol
->core
->mainloop
->defer_enable(c
->defer_event
, 0);
879 if (pa_iochannel_is_readable(c
->io
))
883 if (pa_iochannel_is_writable(c
->io
))
891 if (c
->state
== ESD_STREAMING_DATA
&& c
->sink_input
) {
893 pa_memblockq_prebuf_disable(c
->input_memblockq
);
898 static void io_callback(struct pa_iochannel
*io
, void *userdata
) {
899 struct connection
*c
= userdata
;
900 assert(io
&& c
&& c
->io
== io
);
905 /*** defer callback ***/
907 static void defer_callback(struct pa_mainloop_api
*a
, struct pa_defer_event
*e
, void *userdata
) {
908 struct connection
*c
= userdata
;
909 assert(a
&& c
&& c
->defer_event
== e
);
914 /*** sink_input callbacks ***/
916 static int sink_input_peek_cb(struct pa_sink_input
*i
, struct pa_memchunk
*chunk
) {
918 assert(i
&& i
->userdata
&& chunk
);
921 if (pa_memblockq_peek(c
->input_memblockq
, chunk
) < 0) {
932 static void sink_input_drop_cb(struct pa_sink_input
*i
, const struct pa_memchunk
*chunk
, size_t length
) {
933 struct connection
*c
= i
->userdata
;
934 assert(i
&& c
&& length
);
936 pa_memblockq_drop(c
->input_memblockq
, chunk
, length
);
939 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->defer_enable
);
940 c
->protocol
->core
->mainloop
->defer_enable(c
->defer_event
, 1);
942 /* assert(pa_memblockq_get_length(c->input_memblockq) > 2048); */
945 static void sink_input_kill_cb(struct pa_sink_input
*i
) {
946 assert(i
&& i
->userdata
);
947 connection_free((struct connection
*) i
->userdata
);
950 static pa_usec_t
sink_input_get_latency_cb(struct pa_sink_input
*i
) {
951 struct connection
*c
= i
->userdata
;
953 return pa_bytes_to_usec(pa_memblockq_get_length(c
->input_memblockq
), &c
->sink_input
->sample_spec
);
956 /*** source_output callbacks ***/
958 static void source_output_push_cb(struct pa_source_output
*o
, const struct pa_memchunk
*chunk
) {
959 struct connection
*c
= o
->userdata
;
960 assert(o
&& c
&& chunk
);
962 pa_memblockq_push(c
->output_memblockq
, chunk
, 0);
965 assert(c
->protocol
&& c
->protocol
->core
&& c
->protocol
->core
->mainloop
&& c
->protocol
->core
->mainloop
->defer_enable
);
966 c
->protocol
->core
->mainloop
->defer_enable(c
->defer_event
, 1);
969 static void source_output_kill_cb(struct pa_source_output
*o
) {
970 assert(o
&& o
->userdata
);
971 connection_free((struct connection
*) o
->userdata
);
974 static pa_usec_t
source_output_get_latency_cb(struct pa_source_output
*o
) {
975 struct connection
*c
= o
->userdata
;
977 return pa_bytes_to_usec(pa_memblockq_get_length(c
->output_memblockq
), &c
->source_output
->sample_spec
);
980 /*** socket server callback ***/
982 static void on_connection(struct pa_socket_server
*s
, struct pa_iochannel
*io
, void *userdata
) {
983 struct connection
*c
;
985 assert(s
&& io
&& userdata
);
987 c
= pa_xmalloc(sizeof(struct connection
));
988 c
->protocol
= userdata
;
990 pa_iochannel_set_callback(c
->io
, io_callback
, c
);
992 pa_iochannel_socket_peer_to_string(io
, cname
, sizeof(cname
));
993 assert(c
->protocol
->core
);
994 c
->client
= pa_client_new(c
->protocol
->core
, "ESOUND", cname
);
996 c
->client
->owner
= c
->protocol
->module
;
997 c
->client
->kill
= client_kill_cb
;
998 c
->client
->userdata
= c
;
1000 c
->authorized
= c
->protocol
->public;
1001 c
->swap_byte_order
= 0;
1004 c
->read_data_length
= 0;
1005 c
->read_data
= pa_xmalloc(c
->read_data_alloc
= proto_map
[ESD_PROTO_CONNECT
].data_length
);
1007 c
->write_data_length
= c
->write_data_index
= c
->write_data_alloc
= 0;
1008 c
->write_data
= NULL
;
1010 c
->state
= ESD_NEEDS_REQDATA
;
1011 c
->request
= ESD_PROTO_CONNECT
;
1013 c
->sink_input
= NULL
;
1014 c
->input_memblockq
= NULL
;
1016 c
->source_output
= NULL
;
1017 c
->output_memblockq
= NULL
;
1019 c
->playback
.current_memblock
= NULL
;
1020 c
->playback
.memblock_index
= 0;
1021 c
->playback
.fragment_size
= 0;
1023 c
->scache
.memchunk
.length
= c
->scache
.memchunk
.index
= 0;
1024 c
->scache
.memchunk
.memblock
= NULL
;
1025 c
->scache
.name
= NULL
;
1027 c
->defer_event
= c
->protocol
->core
->mainloop
->defer_new(c
->protocol
->core
->mainloop
, defer_callback
, c
);
1028 assert(c
->defer_event
);
1029 c
->protocol
->core
->mainloop
->defer_enable(c
->defer_event
, 0);
1031 pa_idxset_put(c
->protocol
->connections
, c
, &c
->index
);
1034 /*** entry points ***/
1036 struct pa_protocol_esound
* pa_protocol_esound_new(struct pa_core
*core
, struct pa_socket_server
*server
, struct pa_module
*m
, struct pa_modargs
*ma
) {
1037 struct pa_protocol_esound
*p
;
1039 assert(core
&& server
&& ma
);
1041 p
= pa_xmalloc(sizeof(struct pa_protocol_esound
));
1043 if (pa_modargs_get_value_boolean(ma
, "public", &public) < 0) {
1044 pa_log(__FILE__
": public= expects a boolean argument.\n");
1048 if (pa_authkey_load_auto(pa_modargs_get_value(ma
, "cookie", DEFAULT_COOKIE_FILE
), p
->esd_key
, sizeof(p
->esd_key
)) < 0) {
1056 pa_socket_server_set_callback(p
->server
, on_connection
, p
);
1058 p
->connections
= pa_idxset_new(NULL
, NULL
);
1059 assert(p
->connections
);
1061 p
->sink_name
= pa_xstrdup(pa_modargs_get_value(ma
, "sink", NULL
));
1062 p
->source_name
= pa_xstrdup(pa_modargs_get_value(ma
, "source", NULL
));
1068 void pa_protocol_esound_free(struct pa_protocol_esound
*p
) {
1069 struct connection
*c
;
1072 while ((c
= pa_idxset_first(p
->connections
, NULL
)))
1075 pa_idxset_free(p
->connections
, NULL
, NULL
);
1076 pa_socket_server_unref(p
->server
);