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 Lesser 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 Lesser 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 <polyp/sample.h>
34 #include <polypcore/esound.h>
35 #include <polypcore/memblock.h>
36 #include <polypcore/client.h>
37 #include <polypcore/sink-input.h>
38 #include <polypcore/sink.h>
39 #include <polypcore/source-output.h>
40 #include <polypcore/source.h>
41 #include <polypcore/core-scache.h>
42 #include <polypcore/sample-util.h>
43 #include <polypcore/authkey.h>
44 #include <polypcore/namereg.h>
45 #include <polypcore/xmalloc.h>
46 #include <polypcore/log.h>
47 #include <polypcore/util.h>
49 #include "endianmacros.h"
51 #include "protocol-esound.h"
53 /* Don't accept more connection than this */
54 #define MAX_CONNECTIONS 10
56 /* Kick a client if it doesn't authenticate within this time */
57 #define AUTH_TIMEOUT 5
59 #define DEFAULT_COOKIE_FILE ".esd_auth"
61 #define PLAYBACK_BUFFER_SECONDS (.5)
62 #define PLAYBACK_BUFFER_FRAGMENTS (10)
63 #define RECORD_BUFFER_SECONDS (5)
64 #define RECORD_BUFFER_FRAGMENTS (100)
66 #define MAX_CACHE_SAMPLE_SIZE (1024000)
68 #define SCACHE_PREFIX "esound."
70 /* This is heavily based on esound's code */
75 pa_protocol_esound *protocol;
78 int authorized, swap_byte_order;
80 size_t write_data_alloc, write_data_index, write_data_length;
82 size_t read_data_alloc, read_data_length;
84 esd_client_state_t state;
85 pa_sink_input *sink_input;
86 pa_source_output *source_output;
87 pa_memblockq *input_memblockq, *output_memblockq;
88 pa_defer_event *defer_event;
91 pa_memblock *current_memblock;
92 size_t memblock_index, fragment_size;
98 pa_sample_spec sample_spec;
101 pa_time_event *auth_timeout_event;
104 struct pa_protocol_esound {
108 pa_socket_server *server;
109 pa_idxset *connections;
110 char *sink_name, *source_name;
112 uint8_t esd_key[ESD_KEY_LEN];
115 typedef struct proto_handler {
117 int (*proc)(struct connection *c, esd_proto_t request, const void *data, size_t length);
118 const char *description;
119 } esd_proto_handler_info_t;
121 static void sink_input_drop_cb(pa_sink_input *i, const pa_memchunk *chunk, size_t length);
122 static int sink_input_peek_cb(pa_sink_input *i, pa_memchunk *chunk);
123 static void sink_input_kill_cb(pa_sink_input *i);
124 static pa_usec_t sink_input_get_latency_cb(pa_sink_input *i);
125 static pa_usec_t source_output_get_latency_cb(pa_source_output *o);
127 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk);
128 static void source_output_kill_cb(pa_source_output *o);
130 static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length);
131 static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
132 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length);
133 static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length);
134 static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
135 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
136 static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length);
137 static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length);
138 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
139 static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length);
140 static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length);
142 /* the big map of protocol handler info */
143 static struct proto_handler proto_map[ESD_PROTO_MAX] = {
144 { ESD_KEY_LEN + sizeof(int), esd_proto_connect, "connect" },
145 { ESD_KEY_LEN + sizeof(int), NULL, "lock" },
146 { ESD_KEY_LEN + sizeof(int), NULL, "unlock" },
148 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_play, "stream play" },
149 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream rec" },
150 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream mon" },
152 { ESD_NAME_MAX + 3 * sizeof(int), esd_proto_sample_cache, "sample cache" }, /* 6 */
153 { sizeof(int), esd_proto_sample_free_or_play, "sample free" },
154 { sizeof(int), esd_proto_sample_free_or_play, "sample play" }, /* 8 */
155 { sizeof(int), NULL, "sample loop" },
156 { sizeof(int), NULL, "sample stop" },
157 { -1, NULL, "TODO: sample kill" },
159 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "standby" }, /* NOOP! */
160 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "resume" }, /* NOOP! */ /* 13 */
162 { ESD_NAME_MAX, esd_proto_sample_get_id, "sample getid" }, /* 14 */
163 { ESD_NAME_MAX + 2 * sizeof(int), NULL, "stream filter" },
165 { sizeof(int), esd_proto_server_info, "server info" },
166 { sizeof(int), esd_proto_all_info, "all info" },
167 { -1, NULL, "TODO: subscribe" },
168 { -1, NULL, "TODO: unsubscribe" },
170 { 3 * sizeof(int), esd_proto_stream_pan, "stream pan"},
171 { 3 * sizeof(int), NULL, "sample pan" },
173 { sizeof(int), NULL, "standby mode" },
174 { 0, esd_proto_get_latency, "get latency" }
178 static void connection_free(struct connection *c) {
180 pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
182 if (c->state == ESD_STREAMING_DATA)
183 c->protocol->n_player--;
185 pa_client_free(c->client);
188 pa_sink_input_disconnect(c->sink_input);
189 pa_sink_input_unref(c->sink_input);
192 if (c->source_output) {
193 pa_source_output_disconnect(c->source_output);
194 pa_source_output_unref(c->source_output);
197 if (c->input_memblockq)
198 pa_memblockq_free(c->input_memblockq);
199 if (c->output_memblockq)
200 pa_memblockq_free(c->output_memblockq);
202 if (c->playback.current_memblock)
203 pa_memblock_unref(c->playback.current_memblock);
205 pa_xfree(c->read_data);
206 pa_xfree(c->write_data);
209 pa_iochannel_free(c->io);
212 c->protocol->core->mainloop->defer_free(c->defer_event);
214 if (c->scache.memchunk.memblock)
215 pa_memblock_unref(c->scache.memchunk.memblock);
216 pa_xfree(c->scache.name);
218 if (c->auth_timeout_event)
219 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
224 static void connection_write_prepare(struct connection *c, size_t length) {
228 t = c->write_data_length+length;
230 if (c->write_data_alloc < t)
231 c->write_data = pa_xrealloc(c->write_data, c->write_data_alloc = t);
233 assert(c->write_data);
236 static void connection_write(struct connection *c, const void *data, size_t length) {
240 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
241 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
243 connection_write_prepare(c, length);
245 assert(c->write_data);
247 i = c->write_data_length;
248 c->write_data_length += length;
250 memcpy((char*)c->write_data + i, data, length);
253 static void format_esd2native(int format, int swap_bytes, pa_sample_spec *ss) {
256 ss->channels = ((format & ESD_MASK_CHAN) == ESD_STEREO) ? 2 : 1;
257 if ((format & ESD_MASK_BITS) == ESD_BITS16)
258 ss->format = swap_bytes ? PA_SAMPLE_S16RE : PA_SAMPLE_S16NE;
260 ss->format = PA_SAMPLE_U8;
263 static int format_native2esd(pa_sample_spec *ss) {
266 format = (ss->format == PA_SAMPLE_U8) ? ESD_BITS8 : ESD_BITS16;
267 format |= (ss->channels >= 2) ? ESD_STEREO : ESD_MONO;
272 #define CHECK_VALIDITY(expression, string) do { \
273 if (!(expression)) { \
274 pa_log_warn(__FILE__ ": " string); \
279 /*** esound commands ***/
281 static int esd_proto_connect(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
285 assert(length == (ESD_KEY_LEN + sizeof(uint32_t)));
287 if (!c->authorized) {
288 if (memcmp(data, c->protocol->esd_key, ESD_KEY_LEN) != 0) {
289 pa_log(__FILE__": kicked client with invalid authorization key.");
294 if (c->auth_timeout_event) {
295 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
296 c->auth_timeout_event = NULL;
300 data = (char*)data + ESD_KEY_LEN;
302 memcpy(&ekey, data, sizeof(uint32_t));
303 if (ekey == ESD_ENDIAN_KEY)
304 c->swap_byte_order = 0;
305 else if (ekey == ESD_SWAP_ENDIAN_KEY)
306 c->swap_byte_order = 1;
308 pa_log(__FILE__": client sent invalid endian key");
313 connection_write(c, &ok, sizeof(int));
317 static int esd_proto_stream_play(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
318 char name[ESD_NAME_MAX];
319 int32_t format, rate;
324 assert(c && length == (sizeof(int32_t)*2+ESD_NAME_MAX));
326 memcpy(&format, data, sizeof(int32_t));
327 format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
328 data = (char*)data + sizeof(int32_t);
330 memcpy(&rate, (char*)data, sizeof(int32_t));
331 rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
332 data = (char*)data + sizeof(int32_t);
335 format_esd2native(format, c->swap_byte_order, &ss);
337 CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification");
338 sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1);
339 CHECK_VALIDITY(sink, "No such sink");
341 strncpy(name, data, sizeof(name));
342 name[sizeof(name)-1] = 0;
344 pa_client_set_name(c->client, name);
346 assert(!c->sink_input && !c->input_memblockq);
348 c->sink_input = pa_sink_input_new(sink, __FILE__, name, &ss, NULL, 0, -1);
350 CHECK_VALIDITY(c->sink_input, "Failed to create sink input.");
352 l = (size_t) (pa_bytes_per_second(&ss)*PLAYBACK_BUFFER_SECONDS);
353 c->input_memblockq = pa_memblockq_new(
359 l/PLAYBACK_BUFFER_FRAGMENTS,
361 c->protocol->core->memblock_stat);
362 pa_iochannel_socket_set_rcvbuf(c->io, l/PLAYBACK_BUFFER_FRAGMENTS*2);
363 c->playback.fragment_size = l/10;
365 c->sink_input->owner = c->protocol->module;
366 c->sink_input->client = c->client;
367 c->sink_input->peek = sink_input_peek_cb;
368 c->sink_input->drop = sink_input_drop_cb;
369 c->sink_input->kill = sink_input_kill_cb;
370 c->sink_input->get_latency = sink_input_get_latency_cb;
371 c->sink_input->userdata = c;
373 c->state = ESD_STREAMING_DATA;
375 c->protocol->n_player++;
380 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length) {
381 char name[ESD_NAME_MAX];
382 int32_t format, rate;
387 assert(c && length == (sizeof(int32_t)*2+ESD_NAME_MAX));
389 memcpy(&format, data, sizeof(int32_t));
390 format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
391 data = (char*)data + sizeof(int32_t);
393 memcpy(&rate, (char*)data, sizeof(int32_t));
394 rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
395 data = (char*)data + sizeof(int32_t);
398 format_esd2native(format, c->swap_byte_order, &ss);
400 CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification.");
402 if (request == ESD_PROTO_STREAM_MON) {
405 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
406 pa_log(__FILE__": no such sink.");
410 if (!(source = sink->monitor_source)) {
411 pa_log(__FILE__": no such monitor source.");
415 assert(request == ESD_PROTO_STREAM_REC);
417 if (!(source = pa_namereg_get(c->protocol->core, c->protocol->source_name, PA_NAMEREG_SOURCE, 1))) {
418 pa_log(__FILE__": no such source.");
423 strncpy(name, data, sizeof(name));
424 name[sizeof(name)-1] = 0;
426 pa_client_set_name(c->client, name);
428 assert(!c->output_memblockq && !c->source_output);
430 if (!(c->source_output = pa_source_output_new(source, __FILE__, name, &ss, NULL, -1))) {
431 pa_log(__FILE__": failed to create source output");
435 l = (size_t) (pa_bytes_per_second(&ss)*RECORD_BUFFER_SECONDS);
436 c->output_memblockq = pa_memblockq_new(
444 c->protocol->core->memblock_stat);
445 pa_iochannel_socket_set_sndbuf(c->io, l/RECORD_BUFFER_FRAGMENTS*2);
447 c->source_output->owner = c->protocol->module;
448 c->source_output->client = c->client;
449 c->source_output->push = source_output_push_cb;
450 c->source_output->kill = source_output_kill_cb;
451 c->source_output->get_latency = source_output_get_latency_cb;
452 c->source_output->userdata = c;
454 c->state = ESD_STREAMING_DATA;
456 c->protocol->n_player++;
461 static int esd_proto_get_latency(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
465 assert(c && !data && length == 0);
467 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
470 double usec = pa_sink_get_latency(sink);
471 latency = (int) ((usec*44100)/1000000);
474 latency = MAYBE_INT32_SWAP(c->swap_byte_order, latency);
475 connection_write(c, &latency, sizeof(int32_t));
479 static int esd_proto_server_info(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
480 int32_t rate = 44100, format = ESD_STEREO|ESD_BITS16;
484 assert(c && data && length == sizeof(int32_t));
486 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
487 rate = sink->sample_spec.rate;
488 format = format_native2esd(&sink->sample_spec);
491 connection_write_prepare(c, sizeof(int32_t) * 3);
494 connection_write(c, &response, sizeof(int32_t));
495 rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
496 connection_write(c, &rate, sizeof(int32_t));
497 format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
498 connection_write(c, &format, sizeof(int32_t));
503 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
506 struct connection *conn;
507 uint32_t idx = PA_IDXSET_INVALID;
509 char terminator[sizeof(int32_t)*6+ESD_NAME_MAX];
511 assert(c && data && length == sizeof(int32_t));
513 if (esd_proto_server_info(c, request, data, length) < 0)
516 k = sizeof(int32_t)*5+ESD_NAME_MAX;
517 s = sizeof(int32_t)*6+ESD_NAME_MAX;
518 nsamples = c->protocol->core->scache ? pa_idxset_size(c->protocol->core->scache) : 0;
519 t = s*(nsamples+1) + k*(c->protocol->n_player+1);
521 connection_write_prepare(c, t);
523 memset(terminator, 0, sizeof(terminator));
525 for (conn = pa_idxset_first(c->protocol->connections, &idx); conn; conn = pa_idxset_next(c->protocol->connections, &idx)) {
526 int32_t id, format = ESD_BITS16 | ESD_STEREO, rate = 44100, lvolume = ESD_VOLUME_BASE, rvolume = ESD_VOLUME_BASE;
527 char name[ESD_NAME_MAX];
529 if (conn->state != ESD_STREAMING_DATA)
534 if (conn->sink_input) {
535 rate = conn->sink_input->sample_spec.rate;
536 lvolume = (conn->sink_input->volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM;
537 rvolume = (conn->sink_input->volume.values[1]*ESD_VOLUME_BASE)/PA_VOLUME_NORM;
538 format = format_native2esd(&conn->sink_input->sample_spec);
542 id = MAYBE_INT32_SWAP(c->swap_byte_order, (int32_t) (conn->index+1));
543 connection_write(c, &id, sizeof(int32_t));
546 assert(conn->client);
547 strncpy(name, conn->client->name, ESD_NAME_MAX);
548 connection_write(c, name, ESD_NAME_MAX);
551 rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
552 connection_write(c, &rate, sizeof(int32_t));
555 lvolume = MAYBE_INT32_SWAP(c->swap_byte_order, lvolume);
556 connection_write(c, &lvolume, sizeof(int32_t));
559 rvolume = MAYBE_INT32_SWAP(c->swap_byte_order, rvolume);
560 connection_write(c, &rvolume, sizeof(int32_t));
563 format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
564 connection_write(c, &format, sizeof(int32_t));
569 assert(t == s*(nsamples+1)+k);
573 connection_write(c, terminator, k);
578 idx = PA_IDXSET_INVALID;
579 for (ce = pa_idxset_first(c->protocol->core->scache, &idx); ce; ce = pa_idxset_next(c->protocol->core->scache, &idx)) {
580 int32_t id, rate, lvolume, rvolume, format, len;
581 char name[ESD_NAME_MAX];
586 id = MAYBE_INT32_SWAP(c->swap_byte_order, (int) (ce->index+1));
587 connection_write(c, &id, sizeof(int32_t));
590 if (strncmp(ce->name, SCACHE_PREFIX, sizeof(SCACHE_PREFIX)-1) == 0)
591 strncpy(name, ce->name+sizeof(SCACHE_PREFIX)-1, ESD_NAME_MAX);
593 snprintf(name, ESD_NAME_MAX, "native.%s", ce->name);
594 connection_write(c, name, ESD_NAME_MAX);
597 rate = MAYBE_UINT32_SWAP(c->swap_byte_order, ce->sample_spec.rate);
598 connection_write(c, &rate, sizeof(int32_t));
601 lvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, (ce->volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM);
602 connection_write(c, &lvolume, sizeof(int32_t));
605 rvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, (ce->volume.values[0]*ESD_VOLUME_BASE)/PA_VOLUME_NORM);
606 connection_write(c, &rvolume, sizeof(int32_t));
609 format = MAYBE_INT32_SWAP(c->swap_byte_order, format_native2esd(&ce->sample_spec));
610 connection_write(c, &format, sizeof(int32_t));
613 len = MAYBE_INT32_SWAP(c->swap_byte_order, (int) ce->memchunk.length);
614 connection_write(c, &len, sizeof(int32_t));
622 connection_write(c, terminator, s);
627 static int esd_proto_stream_pan(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
629 uint32_t idx, lvolume, rvolume;
630 struct connection *conn;
632 assert(c && data && length == sizeof(int32_t)*3);
634 memcpy(&idx, data, sizeof(uint32_t));
635 idx = MAYBE_UINT32_SWAP(c->swap_byte_order, idx) - 1;
636 data = (char*)data + sizeof(uint32_t);
638 memcpy(&lvolume, data, sizeof(uint32_t));
639 lvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, lvolume);
640 data = (char*)data + sizeof(uint32_t);
642 memcpy(&rvolume, data, sizeof(uint32_t));
643 rvolume = MAYBE_UINT32_SWAP(c->swap_byte_order, rvolume);
644 data = (char*)data + sizeof(uint32_t);
646 if ((conn = pa_idxset_get_by_index(c->protocol->connections, idx))) {
647 assert(conn->sink_input);
648 conn->sink_input->volume.values[0] = (lvolume*PA_VOLUME_NORM)/ESD_VOLUME_BASE;
649 conn->sink_input->volume.values[1] = (rvolume*PA_VOLUME_NORM)/ESD_VOLUME_BASE;
650 conn->sink_input->volume.channels = 2;
655 connection_write(c, &ok, sizeof(int32_t));
660 static int esd_proto_sample_cache(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
662 int32_t format, rate, sc_length;
664 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
666 assert(c && data && length == (ESD_NAME_MAX+3*sizeof(int32_t)));
668 memcpy(&format, data, sizeof(int32_t));
669 format = MAYBE_INT32_SWAP(c->swap_byte_order, format);
670 data = (char*)data + sizeof(int32_t);
672 memcpy(&rate, (char*)data + sizeof(int32_t), sizeof(int32_t));
673 rate = MAYBE_INT32_SWAP(c->swap_byte_order, rate);
674 data = (char*)data + sizeof(int32_t);
677 format_esd2native(format, c->swap_byte_order, &ss);
679 CHECK_VALIDITY(pa_sample_spec_valid(&ss), "Invalid sample specification.");
681 memcpy(&sc_length, data, sizeof(int32_t));
682 sc_length = MAYBE_INT32_SWAP(c->swap_byte_order, sc_length);
684 CHECK_VALIDITY(sc_length <= MAX_CACHE_SAMPLE_SIZE, "Sample too large.");
686 strcpy(name, SCACHE_PREFIX);
687 strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
688 name[sizeof(name)-1] = 0;
690 assert(!c->scache.memchunk.memblock);
691 c->scache.memchunk.memblock = pa_memblock_new(sc_length, c->protocol->core->memblock_stat);
692 c->scache.memchunk.index = 0;
693 c->scache.memchunk.length = sc_length;
694 c->scache.sample_spec = ss;
695 assert(!c->scache.name);
696 c->scache.name = pa_xstrdup(name);
698 c->state = ESD_CACHING_SAMPLE;
700 pa_scache_add_item(c->protocol->core, c->scache.name, NULL, NULL, NULL, &idx);
703 connection_write(c, &idx, sizeof(uint32_t));
708 static int esd_proto_sample_get_id(struct connection *c, PA_GCC_UNUSED esd_proto_t request, const void *data, size_t length) {
711 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
713 assert(c && data && length == ESD_NAME_MAX);
715 strcpy(name, SCACHE_PREFIX);
716 strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
717 name[sizeof(name)-1] = 0;
720 if ((idx = pa_scache_get_id_by_name(c->protocol->core, name)) != PA_IDXSET_INVALID)
723 connection_write(c, &ok, sizeof(int32_t));
728 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
733 assert(c && data && length == sizeof(int32_t));
735 memcpy(&idx, data, sizeof(uint32_t));
736 idx = MAYBE_UINT32_SWAP(c->swap_byte_order, idx) - 1;
740 if ((name = pa_scache_get_name_by_id(c->protocol->core, idx))) {
741 if (request == ESD_PROTO_SAMPLE_PLAY) {
744 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
745 if (pa_scache_play_item(c->protocol->core, name, sink, NULL) >= 0)
748 assert(request == ESD_PROTO_SAMPLE_FREE);
750 if (pa_scache_remove_item(c->protocol->core, name) >= 0)
755 connection_write(c, &ok, sizeof(int32_t));
760 static int esd_proto_standby_or_resume(struct connection *c, PA_GCC_UNUSED esd_proto_t request, PA_GCC_UNUSED const void *data, PA_GCC_UNUSED size_t length) {
763 connection_write_prepare(c, sizeof(int32_t) * 2);
766 connection_write(c, &ok, sizeof(int32_t));
767 connection_write(c, &ok, sizeof(int32_t));
772 /*** client callbacks ***/
774 static void client_kill_cb(pa_client *c) {
775 assert(c && c->userdata);
776 connection_free(c->userdata);
779 /*** pa_iochannel callbacks ***/
781 static int do_read(struct connection *c) {
784 /* pa_log("READ"); */
786 if (c->state == ESD_NEXT_REQUEST) {
788 assert(c->read_data_length < sizeof(c->request));
790 if ((r = pa_iochannel_read(c->io, ((uint8_t*) &c->request) + c->read_data_length, sizeof(c->request) - c->read_data_length)) <= 0) {
791 pa_log_debug(__FILE__": read() failed: %s", r < 0 ? strerror(errno) : "EOF");
795 if ((c->read_data_length+= r) >= sizeof(c->request)) {
796 struct proto_handler *handler;
798 c->request = MAYBE_INT32_SWAP(c->swap_byte_order, c->request);
800 if (c->request < ESD_PROTO_CONNECT || c->request > ESD_PROTO_MAX) {
801 pa_log(__FILE__": recieved invalid request.");
805 handler = proto_map+c->request;
807 /* pa_log(__FILE__": executing request #%u", c->request); */
809 if (!handler->proc) {
810 pa_log(__FILE__": recieved unimplemented request #%u.", c->request);
814 if (handler->data_length == 0) {
815 c->read_data_length = 0;
817 if (handler->proc(c, c->request, NULL, 0) < 0)
821 if (c->read_data_alloc < handler->data_length)
822 c->read_data = pa_xrealloc(c->read_data, c->read_data_alloc = handler->data_length);
823 assert(c->read_data);
825 c->state = ESD_NEEDS_REQDATA;
826 c->read_data_length = 0;
830 } else if (c->state == ESD_NEEDS_REQDATA) {
832 struct proto_handler *handler = proto_map+c->request;
834 assert(handler->proc);
836 assert(c->read_data && c->read_data_length < handler->data_length);
838 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->read_data + c->read_data_length, handler->data_length - c->read_data_length)) <= 0) {
839 pa_log_debug(__FILE__": read() failed: %s", r < 0 ? strerror(errno) : "EOF");
843 if ((c->read_data_length += r) >= handler->data_length) {
844 size_t l = c->read_data_length;
845 assert(handler->proc);
847 c->state = ESD_NEXT_REQUEST;
848 c->read_data_length = 0;
850 if (handler->proc(c, c->request, c->read_data, l) < 0)
853 } else if (c->state == ESD_CACHING_SAMPLE) {
856 assert(c->scache.memchunk.memblock && c->scache.name && c->scache.memchunk.index < c->scache.memchunk.length);
858 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) {
859 pa_log_debug(__FILE__": read() failed: %s", r < 0 ? strerror(errno) : "EOF");
863 c->scache.memchunk.index += r;
864 assert(c->scache.memchunk.index <= c->scache.memchunk.length);
866 if (c->scache.memchunk.index == c->scache.memchunk.length) {
869 c->scache.memchunk.index = 0;
870 pa_scache_add_item(c->protocol->core, c->scache.name, &c->scache.sample_spec, NULL, &c->scache.memchunk, &idx);
872 pa_memblock_unref(c->scache.memchunk.memblock);
873 c->scache.memchunk.memblock = NULL;
874 c->scache.memchunk.index = c->scache.memchunk.length = 0;
876 pa_xfree(c->scache.name);
877 c->scache.name = NULL;
879 c->state = ESD_NEXT_REQUEST;
882 connection_write(c, &idx, sizeof(uint32_t));
885 } else if (c->state == ESD_STREAMING_DATA && c->sink_input) {
890 assert(c->input_memblockq);
892 /* pa_log("STREAMING_DATA"); */
894 if (!(l = pa_memblockq_missing(c->input_memblockq)))
897 if (l > c->playback.fragment_size)
898 l = c->playback.fragment_size;
900 if (c->playback.current_memblock)
901 if (c->playback.current_memblock->length - c->playback.memblock_index < l) {
902 pa_memblock_unref(c->playback.current_memblock);
903 c->playback.current_memblock = NULL;
904 c->playback.memblock_index = 0;
907 if (!c->playback.current_memblock) {
908 c->playback.current_memblock = pa_memblock_new(c->playback.fragment_size*2, c->protocol->core->memblock_stat);
909 assert(c->playback.current_memblock && c->playback.current_memblock->length >= l);
910 c->playback.memblock_index = 0;
913 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->playback.current_memblock->data+c->playback.memblock_index, l)) <= 0) {
914 pa_log_debug(__FILE__": read() failed: %s", r < 0 ? strerror(errno) : "EOF");
918 chunk.memblock = c->playback.current_memblock;
919 chunk.index = c->playback.memblock_index;
921 assert(chunk.memblock);
923 c->playback.memblock_index += r;
925 assert(c->input_memblockq);
926 pa_memblockq_push_align(c->input_memblockq, &chunk);
927 assert(c->sink_input);
928 pa_sink_notify(c->sink_input->sink);
934 static int do_write(struct connection *c) {
937 /* pa_log("WRITE"); */
939 if (c->write_data_length) {
942 assert(c->write_data_index < c->write_data_length);
943 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) {
944 pa_log(__FILE__": write() failed: %s", strerror(errno));
948 if ((c->write_data_index +=r) >= c->write_data_length)
949 c->write_data_length = c->write_data_index = 0;
951 } else if (c->state == ESD_STREAMING_DATA && c->source_output) {
955 assert(c->output_memblockq);
956 if (pa_memblockq_peek(c->output_memblockq, &chunk) < 0)
959 assert(chunk.memblock && chunk.length);
961 if ((r = pa_iochannel_write(c->io, (uint8_t*) chunk.memblock->data+chunk.index, chunk.length)) < 0) {
962 pa_memblock_unref(chunk.memblock);
963 pa_log(__FILE__": write(): %s", strerror(errno));
967 pa_memblockq_drop(c->output_memblockq, &chunk, r);
968 pa_memblock_unref(chunk.memblock);
970 pa_source_notify(c->source_output->source);
976 static void do_work(struct connection *c) {
979 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
980 c->protocol->core->mainloop->defer_enable(c->defer_event, 0);
985 if (pa_iochannel_is_readable(c->io)) {
988 } else if (pa_iochannel_is_hungup(c->io))
991 if (pa_iochannel_is_writable(c->io))
999 if (c->state == ESD_STREAMING_DATA && c->sink_input) {
1002 pa_iochannel_free(c->io);
1005 pa_memblockq_prebuf_disable(c->input_memblockq);
1006 pa_sink_notify(c->sink_input->sink);
1012 static void io_callback(pa_iochannel*io, void *userdata) {
1013 struct connection *c = userdata;
1014 assert(io && c && c->io == io);
1021 /*** defer callback ***/
1023 static void defer_callback(pa_mainloop_api*a, pa_defer_event *e, void *userdata) {
1024 struct connection *c = userdata;
1025 assert(a && c && c->defer_event == e);
1027 /* pa_log("DEFER"); */
1032 /*** sink_input callbacks ***/
1034 static int sink_input_peek_cb(pa_sink_input *i, pa_memchunk *chunk) {
1035 struct connection*c;
1036 assert(i && i->userdata && chunk);
1039 if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
1050 static void sink_input_drop_cb(pa_sink_input *i, const pa_memchunk *chunk, size_t length) {
1051 struct connection*c = i->userdata;
1052 assert(i && c && length);
1054 /* pa_log("DROP"); */
1056 pa_memblockq_drop(c->input_memblockq, chunk, length);
1059 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
1062 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
1064 /* assert(pa_memblockq_get_length(c->input_memblockq) > 2048); */
1067 static void sink_input_kill_cb(pa_sink_input *i) {
1068 assert(i && i->userdata);
1069 connection_free((struct connection *) i->userdata);
1072 static pa_usec_t sink_input_get_latency_cb(pa_sink_input *i) {
1073 struct connection*c = i->userdata;
1075 return pa_bytes_to_usec(pa_memblockq_get_length(c->input_memblockq), &c->sink_input->sample_spec);
1078 /*** source_output callbacks ***/
1080 static void source_output_push_cb(pa_source_output *o, const pa_memchunk *chunk) {
1081 struct connection *c = o->userdata;
1082 assert(o && c && chunk);
1084 pa_memblockq_push(c->output_memblockq, chunk);
1087 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
1090 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
1093 static void source_output_kill_cb(pa_source_output *o) {
1094 assert(o && o->userdata);
1095 connection_free((struct connection *) o->userdata);
1098 static pa_usec_t source_output_get_latency_cb(pa_source_output *o) {
1099 struct connection*c = o->userdata;
1101 return pa_bytes_to_usec(pa_memblockq_get_length(c->output_memblockq), &c->source_output->sample_spec);
1104 /*** socket server callback ***/
1106 static void auth_timeout(pa_mainloop_api*m, pa_time_event *e, const struct timeval *tv, void *userdata) {
1107 struct connection *c = userdata;
1108 assert(m && tv && c && c->auth_timeout_event == e);
1114 static void on_connection(pa_socket_server*s, pa_iochannel *io, void *userdata) {
1115 struct connection *c;
1116 pa_protocol_esound *p = userdata;
1118 assert(s && io && p);
1120 if (pa_idxset_size(p->connections)+1 > MAX_CONNECTIONS) {
1121 pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.", MAX_CONNECTIONS);
1122 pa_iochannel_free(io);
1126 c = pa_xnew(struct connection, 1);
1129 pa_iochannel_set_callback(c->io, io_callback, c);
1131 pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
1133 c->client = pa_client_new(p->core, __FILE__, cname);
1135 c->client->owner = p->module;
1136 c->client->kill = client_kill_cb;
1137 c->client->userdata = c;
1139 c->authorized = p->public;
1140 c->swap_byte_order = 0;
1143 c->read_data_length = 0;
1144 c->read_data = pa_xmalloc(c->read_data_alloc = proto_map[ESD_PROTO_CONNECT].data_length);
1146 c->write_data_length = c->write_data_index = c->write_data_alloc = 0;
1147 c->write_data = NULL;
1149 c->state = ESD_NEEDS_REQDATA;
1150 c->request = ESD_PROTO_CONNECT;
1152 c->sink_input = NULL;
1153 c->input_memblockq = NULL;
1155 c->source_output = NULL;
1156 c->output_memblockq = NULL;
1158 c->playback.current_memblock = NULL;
1159 c->playback.memblock_index = 0;
1160 c->playback.fragment_size = 0;
1162 c->scache.memchunk.length = c->scache.memchunk.index = 0;
1163 c->scache.memchunk.memblock = NULL;
1164 c->scache.name = NULL;
1166 if (!c->authorized) {
1168 pa_gettimeofday(&tv);
1169 tv.tv_sec += AUTH_TIMEOUT;
1170 c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
1172 c->auth_timeout_event = NULL;
1174 c->defer_event = p->core->mainloop->defer_new(p->core->mainloop, defer_callback, c);
1175 assert(c->defer_event);
1176 p->core->mainloop->defer_enable(c->defer_event, 0);
1178 pa_idxset_put(p->connections, c, &c->index);
1181 /*** entry points ***/
1183 pa_protocol_esound* pa_protocol_esound_new(pa_core*core, pa_socket_server *server, pa_module *m, pa_modargs *ma) {
1184 pa_protocol_esound *p;
1186 assert(core && server && ma);
1188 p = pa_xnew(pa_protocol_esound, 1);
1190 if (pa_modargs_get_value_boolean(ma, "auth-anonymous", &public) < 0) {
1191 pa_log(__FILE__": auth-anonymous= expects a boolean argument.");
1195 if (pa_authkey_load_auto(pa_modargs_get_value(ma, "cookie", DEFAULT_COOKIE_FILE), p->esd_key, sizeof(p->esd_key)) < 0) {
1203 pa_socket_server_set_callback(p->server, on_connection, p);
1205 p->connections = pa_idxset_new(NULL, NULL);
1206 assert(p->connections);
1208 p->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
1209 p->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));
1215 void pa_protocol_esound_free(pa_protocol_esound *p) {
1216 struct connection *c;
1219 while ((c = pa_idxset_first(p->connections, NULL)))
1222 pa_idxset_free(p->connections, NULL, NULL);
1223 pa_socket_server_unref(p->server);