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 "protocol-esound.h"
37 #include "sink-input.h"
39 #include "source-output.h"
43 #include "sample-util.h"
49 /* Don't accept more connection than this */
50 #define MAX_CONNECTIONS 10
52 /* Kick a client if it doesn't authenticate within this time */
53 #define AUTH_TIMEOUT 5
55 #define DEFAULT_COOKIE_FILE ".esd_auth"
57 #define PLAYBACK_BUFFER_SECONDS (.5)
58 #define PLAYBACK_BUFFER_FRAGMENTS (10)
59 #define RECORD_BUFFER_SECONDS (5)
60 #define RECORD_BUFFER_FRAGMENTS (100)
62 #define MAX_CACHE_SAMPLE_SIZE (1024000)
64 #define SCACHE_PREFIX "esound."
66 #define PA_TYPEID_ESOUND PA_TYPEID_MAKE('E', 'S', 'D', 'P')
68 /* This is heavily based on esound's code */
73 struct pa_protocol_esound *protocol;
74 struct pa_iochannel *io;
75 struct pa_client *client;
76 int authorized, swap_byte_order;
78 size_t write_data_alloc, write_data_index, write_data_length;
80 size_t read_data_alloc, read_data_length;
82 esd_client_state_t state;
83 struct pa_sink_input *sink_input;
84 struct pa_source_output *source_output;
85 struct pa_memblockq *input_memblockq, *output_memblockq;
86 struct pa_defer_event *defer_event;
89 struct pa_memblock *current_memblock;
90 size_t memblock_index, fragment_size;
94 struct pa_memchunk memchunk;
96 struct pa_sample_spec sample_spec;
99 struct pa_time_event *auth_timeout_event;
102 struct pa_protocol_esound {
104 struct pa_module *module;
105 struct pa_core *core;
106 struct pa_socket_server *server;
107 struct pa_idxset *connections;
108 char *sink_name, *source_name;
110 uint8_t esd_key[ESD_KEY_LEN];
113 typedef struct proto_handler {
115 int (*proc)(struct connection *c, esd_proto_t request, const void *data, size_t length);
116 const char *description;
117 } esd_proto_handler_info_t;
119 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
120 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
121 static void sink_input_kill_cb(struct pa_sink_input *i);
122 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i);
123 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o);
125 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
126 static void source_output_kill_cb(struct pa_source_output *o);
128 static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length);
129 static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
130 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length);
131 static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length);
132 static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
133 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
134 static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length);
135 static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length);
136 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
137 static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length);
138 static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length);
140 /* the big map of protocol handler info */
141 static struct proto_handler proto_map[ESD_PROTO_MAX] = {
142 { ESD_KEY_LEN + sizeof(int), esd_proto_connect, "connect" },
143 { ESD_KEY_LEN + sizeof(int), NULL, "lock" },
144 { ESD_KEY_LEN + sizeof(int), NULL, "unlock" },
146 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_play, "stream play" },
147 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream rec" },
148 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream mon" },
150 { ESD_NAME_MAX + 3 * sizeof(int), esd_proto_sample_cache, "sample cache" }, /* 6 */
151 { sizeof(int), esd_proto_sample_free_or_play, "sample free" },
152 { sizeof(int), esd_proto_sample_free_or_play, "sample play" }, /* 8 */
153 { sizeof(int), NULL, "sample loop" },
154 { sizeof(int), NULL, "sample stop" },
155 { -1, NULL, "TODO: sample kill" },
157 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "standby" }, /* NOOP! */
158 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "resume" }, /* NOOP! */ /* 13 */
160 { ESD_NAME_MAX, esd_proto_sample_get_id, "sample getid" }, /* 14 */
161 { ESD_NAME_MAX + 2 * sizeof(int), NULL, "stream filter" },
163 { sizeof(int), esd_proto_server_info, "server info" },
164 { sizeof(int), esd_proto_all_info, "all info" },
165 { -1, NULL, "TODO: subscribe" },
166 { -1, NULL, "TODO: unsubscribe" },
168 { 3 * sizeof(int), esd_proto_stream_pan, "stream pan"},
169 { 3 * sizeof(int), NULL, "sample pan" },
171 { sizeof(int), NULL, "standby mode" },
172 { 0, esd_proto_get_latency, "get latency" }
176 static void connection_free(struct connection *c) {
178 pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
180 if (c->state == ESD_STREAMING_DATA)
181 c->protocol->n_player--;
183 pa_client_free(c->client);
186 pa_sink_input_disconnect(c->sink_input);
187 pa_sink_input_unref(c->sink_input);
190 if (c->source_output) {
191 pa_source_output_disconnect(c->source_output);
192 pa_source_output_unref(c->source_output);
195 if (c->input_memblockq)
196 pa_memblockq_free(c->input_memblockq);
197 if (c->output_memblockq)
198 pa_memblockq_free(c->output_memblockq);
200 if (c->playback.current_memblock)
201 pa_memblock_unref(c->playback.current_memblock);
203 pa_xfree(c->read_data);
204 pa_xfree(c->write_data);
207 pa_iochannel_free(c->io);
210 c->protocol->core->mainloop->defer_free(c->defer_event);
212 if (c->scache.memchunk.memblock)
213 pa_memblock_unref(c->scache.memchunk.memblock);
214 pa_xfree(c->scache.name);
216 if (c->auth_timeout_event)
217 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
222 static void* connection_write(struct connection *c, size_t length) {
226 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
227 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
229 t = c->write_data_length+length;
231 if (c->write_data_alloc < t)
232 c->write_data = pa_xrealloc(c->write_data, c->write_data_alloc = t);
234 assert(c->write_data);
236 i = c->write_data_length;
237 c->write_data_length += length;
239 return (uint8_t*) c->write_data+i;
242 static void format_esd2native(int format, struct pa_sample_spec *ss) {
245 ss->channels = ((format & ESD_MASK_CHAN) == ESD_STEREO) ? 2 : 1;
246 ss->format = ((format & ESD_MASK_BITS) == ESD_BITS16) ? PA_SAMPLE_S16NE : PA_SAMPLE_U8;
249 static int format_native2esd(struct pa_sample_spec *ss) {
252 format = (ss->format == PA_SAMPLE_U8) ? ESD_BITS8 : ESD_BITS16;
253 format |= (ss->channels >= 2) ? ESD_STEREO : ESD_MONO;
258 /*** esound commands ***/
260 static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length) {
263 assert(length == (ESD_KEY_LEN + sizeof(uint32_t)));
265 if (!c->authorized) {
266 if (memcmp(data, c->protocol->esd_key, ESD_KEY_LEN) != 0) {
267 pa_log(__FILE__": kicked client with invalid authorization key.\n");
272 if (c->auth_timeout_event) {
273 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
274 c->auth_timeout_event = NULL;
278 ekey = *(uint32_t*)((uint8_t*) data+ESD_KEY_LEN);
279 if (ekey == ESD_ENDIAN_KEY)
280 c->swap_byte_order = 0;
281 else if (ekey == ESD_SWAP_ENDIAN_KEY)
282 c->swap_byte_order = 1;
284 pa_log(__FILE__": client sent invalid endian key\n");
288 ok = connection_write(c, sizeof(int));
294 static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
295 char name[ESD_NAME_MAX];
297 struct pa_sink *sink;
298 struct pa_sample_spec ss;
300 assert(c && length == (sizeof(int)*2+ESD_NAME_MAX));
302 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
303 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
306 format_esd2native(format, &ss);
308 if (!pa_sample_spec_valid(&ss)) {
309 pa_log(__FILE__": invalid sample specification\n");
313 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
314 pa_log(__FILE__": no such sink\n");
318 strncpy(name, (char*) data + sizeof(int)*2, sizeof(name));
319 name[sizeof(name)-1] = 0;
321 pa_client_set_name(c->client, name);
323 assert(!c->sink_input && !c->input_memblockq);
325 if (!(c->sink_input = pa_sink_input_new(sink, PA_TYPEID_ESOUND, name, &ss, 0, -1))) {
326 pa_log(__FILE__": failed to create sink input.\n");
330 l = (size_t) (pa_bytes_per_second(&ss)*PLAYBACK_BUFFER_SECONDS);
331 c->input_memblockq = pa_memblockq_new(l, 0, pa_frame_size(&ss), l/2, l/PLAYBACK_BUFFER_FRAGMENTS, c->protocol->core->memblock_stat);
332 pa_iochannel_socket_set_rcvbuf(c->io, l/PLAYBACK_BUFFER_FRAGMENTS*2);
333 c->playback.fragment_size = l/10;
335 c->sink_input->owner = c->protocol->module;
336 c->sink_input->client = c->client;
337 c->sink_input->peek = sink_input_peek_cb;
338 c->sink_input->drop = sink_input_drop_cb;
339 c->sink_input->kill = sink_input_kill_cb;
340 c->sink_input->get_latency = sink_input_get_latency_cb;
341 c->sink_input->userdata = c;
343 c->state = ESD_STREAMING_DATA;
345 c->protocol->n_player++;
350 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length) {
351 char name[ESD_NAME_MAX];
353 struct pa_source *source;
354 struct pa_sample_spec ss;
356 assert(c && length == (sizeof(int)*2+ESD_NAME_MAX));
358 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
359 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
362 format_esd2native(format, &ss);
364 if (!pa_sample_spec_valid(&ss)) {
365 pa_log(__FILE__": invalid sample specification.\n");
369 if (request == ESD_PROTO_STREAM_MON) {
370 struct pa_sink* sink;
372 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
373 pa_log(__FILE__": no such sink.\n");
377 if (!(source = sink->monitor_source)) {
378 pa_log(__FILE__": no such monitor source.\n");
382 assert(request == ESD_PROTO_STREAM_REC);
384 if (!(source = pa_namereg_get(c->protocol->core, c->protocol->source_name, PA_NAMEREG_SOURCE, 1))) {
385 pa_log(__FILE__": no such source.\n");
390 strncpy(name, (char*) data + sizeof(int)*2, sizeof(name));
391 name[sizeof(name)-1] = 0;
393 pa_client_set_name(c->client, name);
395 assert(!c->output_memblockq && !c->source_output);
397 if (!(c->source_output = pa_source_output_new(source, PA_TYPEID_ESOUND, name, &ss, -1))) {
398 pa_log(__FILE__": failed to create source output\n");
402 l = (size_t) (pa_bytes_per_second(&ss)*RECORD_BUFFER_SECONDS);
403 c->output_memblockq = pa_memblockq_new(l, 0, pa_frame_size(&ss), 0, 0, c->protocol->core->memblock_stat);
404 pa_iochannel_socket_set_sndbuf(c->io, l/RECORD_BUFFER_FRAGMENTS*2);
406 c->source_output->owner = c->protocol->module;
407 c->source_output->client = c->client;
408 c->source_output->push = source_output_push_cb;
409 c->source_output->kill = source_output_kill_cb;
410 c->source_output->get_latency = source_output_get_latency_cb;
411 c->source_output->userdata = c;
413 c->state = ESD_STREAMING_DATA;
415 c->protocol->n_player++;
420 static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length) {
421 struct pa_sink *sink;
423 assert(c && !data && length == 0);
425 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
428 double usec = pa_sink_get_latency(sink);
429 usec += PLAYBACK_BUFFER_SECONDS*1000000; /* A better estimation would be a good idea! */
430 latency = (int) ((usec*44100)/1000000);
433 lag = connection_write(c, sizeof(int));
435 *lag = c->swap_byte_order ? swap_endian_32(latency) : latency;
439 static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
440 int rate = 44100, format = ESD_STEREO|ESD_BITS16;
442 struct pa_sink *sink;
443 assert(c && data && length == sizeof(int));
445 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
446 rate = sink->sample_spec.rate;
447 format = format_native2esd(&sink->sample_spec);
450 response = connection_write(c, sizeof(int)*3);
453 *(response++) = maybe_swap_endian_32(c->swap_byte_order, rate);
454 *(response++) = maybe_swap_endian_32(c->swap_byte_order, format);
458 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
461 struct connection *conn;
462 size_t index = PA_IDXSET_INVALID;
464 assert(c && data && length == sizeof(int));
466 if (esd_proto_server_info(c, request, data, length) < 0)
469 k = sizeof(int)*5+ESD_NAME_MAX;
470 s = sizeof(int)*6+ESD_NAME_MAX;
471 nsamples = c->protocol->core->scache ? pa_idxset_ncontents(c->protocol->core->scache) : 0;
472 response = connection_write(c, (t = s*(nsamples+1) + k*(c->protocol->n_player+1)));
475 for (conn = pa_idxset_first(c->protocol->connections, &index); conn; conn = pa_idxset_next(c->protocol->connections, &index)) {
476 int format = ESD_BITS16 | ESD_STEREO, rate = 44100, volume = 0xFF;
478 if (conn->state != ESD_STREAMING_DATA)
483 if (conn->sink_input) {
484 rate = conn->sink_input->sample_spec.rate;
485 volume = (conn->sink_input->volume*0xFF)/0x100;
486 format = format_native2esd(&conn->sink_input->sample_spec);
490 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) (conn->index+1));
491 response += sizeof(int);
494 assert(conn->client);
495 strncpy((char*) response, conn->client->name, ESD_NAME_MAX);
496 response += ESD_NAME_MAX;
499 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, rate);
500 response += sizeof(int);
503 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, volume);
504 response += sizeof(int);
507 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, volume);
508 response += sizeof(int);
511 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, format);
512 response += sizeof(int);
517 assert(t == s*(nsamples+1)+k);
518 memset(response, 0, k);
523 struct pa_scache_entry *ce;
525 index = PA_IDXSET_INVALID;
526 for (ce = pa_idxset_first(c->protocol->core->scache, &index); ce; ce = pa_idxset_next(c->protocol->core->scache, &index)) {
530 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) (ce->index+1));
531 response += sizeof(int);
534 if (strncmp(ce->name, SCACHE_PREFIX, sizeof(SCACHE_PREFIX)-1) == 0)
535 strncpy((char*) response, ce->name+sizeof(SCACHE_PREFIX)-1, ESD_NAME_MAX);
537 snprintf((char*) response, ESD_NAME_MAX, "native.%s", ce->name);
538 response += ESD_NAME_MAX;
541 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, ce->sample_spec.rate);
542 response += sizeof(int);
545 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (ce->volume*0xFF)/0x100);
546 response += sizeof(int);
549 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (ce->volume*0xFF)/0x100);
550 response += sizeof(int);
553 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, format_native2esd(&ce->sample_spec));
554 response += sizeof(int);
557 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) ce->memchunk.length);
558 response += sizeof(int);
565 memset(response, 0, s);
570 static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length) {
572 uint32_t index, volume;
573 struct connection *conn;
574 assert(c && data && length == sizeof(int)*3);
576 index = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *(int*)data)-1;
577 volume = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
578 volume = (volume*0x100)/0xFF;
580 ok = connection_write(c, sizeof(int));
583 if ((conn = pa_idxset_get_by_index(c->protocol->connections, index))) {
584 assert(conn->sink_input);
585 conn->sink_input->volume = volume;
593 static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length) {
594 struct pa_sample_spec ss;
599 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
600 assert(c && data && length == (ESD_NAME_MAX+3*sizeof(int)));
602 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
603 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
606 format_esd2native(format, &ss);
608 sc_length = (size_t) maybe_swap_endian_32(c->swap_byte_order, (*((int*)data + 2)));
610 if (sc_length >= MAX_CACHE_SAMPLE_SIZE)
613 strcpy(name, SCACHE_PREFIX);
614 strncpy(name+sizeof(SCACHE_PREFIX)-1, (char*) data+3*sizeof(int), ESD_NAME_MAX);
615 name[sizeof(name)-1] = 0;
617 assert(!c->scache.memchunk.memblock);
618 c->scache.memchunk.memblock = pa_memblock_new(sc_length, c->protocol->core->memblock_stat);
619 c->scache.memchunk.index = 0;
620 c->scache.memchunk.length = sc_length;
621 c->scache.sample_spec = ss;
622 assert(!c->scache.name);
623 c->scache.name = pa_xstrdup(name);
625 c->state = ESD_CACHING_SAMPLE;
627 pa_scache_add_item(c->protocol->core, c->scache.name, NULL, NULL, &index);
629 ok = connection_write(c, sizeof(int));
637 static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length) {
640 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
641 assert(c && data && length == ESD_NAME_MAX);
643 ok = connection_write(c, sizeof(int));
648 strcpy(name, SCACHE_PREFIX);
649 strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
650 name[sizeof(name)-1] = 0;
652 if ((index = pa_scache_get_id_by_name(c->protocol->core, name)) != PA_IDXSET_INVALID)
653 *ok = (int) index +1;
658 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
662 assert(c && data && length == sizeof(int));
664 index = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *(int*)data)-1;
666 ok = connection_write(c, sizeof(int));
671 if ((name = pa_scache_get_name_by_id(c->protocol->core, index))) {
672 if (request == ESD_PROTO_SAMPLE_PLAY) {
673 struct pa_sink *sink;
675 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
676 if (pa_scache_play_item(c->protocol->core, name, sink, PA_VOLUME_NORM) >= 0)
679 assert(request == ESD_PROTO_SAMPLE_FREE);
681 if (pa_scache_remove_item(c->protocol->core, name) >= 0)
689 static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length) {
691 ok = connection_write(c, sizeof(int)*2);
698 /*** client callbacks ***/
700 static void client_kill_cb(struct pa_client *c) {
701 assert(c && c->userdata);
702 connection_free(c->userdata);
705 /*** pa_iochannel callbacks ***/
707 static int do_read(struct connection *c) {
710 /* pa_log("READ\n"); */
712 if (c->state == ESD_NEXT_REQUEST) {
714 assert(c->read_data_length < sizeof(c->request));
716 if ((r = pa_iochannel_read(c->io, ((uint8_t*) &c->request) + c->read_data_length, sizeof(c->request) - c->read_data_length)) <= 0) {
718 pa_log_warn(__FILE__": read() failed: %s\n", strerror(errno));
722 if ((c->read_data_length+= r) >= sizeof(c->request)) {
723 struct proto_handler *handler;
725 if (c->swap_byte_order)
726 c->request = swap_endian_32(c->request);
728 if (c->request < ESD_PROTO_CONNECT || c->request > ESD_PROTO_MAX) {
729 pa_log(__FILE__": recieved invalid request.\n");
733 handler = proto_map+c->request;
735 /* pa_log(__FILE__": executing request #%u\n", c->request); */
737 if (!handler->proc) {
738 pa_log(__FILE__": recieved unimplemented request #%u.\n", c->request);
742 if (handler->data_length == 0) {
743 c->read_data_length = 0;
745 if (handler->proc(c, c->request, NULL, 0) < 0)
749 if (c->read_data_alloc < handler->data_length)
750 c->read_data = pa_xrealloc(c->read_data, c->read_data_alloc = handler->data_length);
751 assert(c->read_data);
753 c->state = ESD_NEEDS_REQDATA;
754 c->read_data_length = 0;
758 } else if (c->state == ESD_NEEDS_REQDATA) {
760 struct proto_handler *handler = proto_map+c->request;
762 assert(handler->proc);
764 assert(c->read_data && c->read_data_length < handler->data_length);
766 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->read_data + c->read_data_length, handler->data_length - c->read_data_length)) <= 0) {
767 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
771 if ((c->read_data_length+= r) >= handler->data_length) {
772 size_t l = c->read_data_length;
773 assert(handler->proc);
775 c->state = ESD_NEXT_REQUEST;
776 c->read_data_length = 0;
778 if (handler->proc(c, c->request, c->read_data, l) < 0)
781 } else if (c->state == ESD_CACHING_SAMPLE) {
784 assert(c->scache.memchunk.memblock && c->scache.name && c->scache.memchunk.index < c->scache.memchunk.length);
786 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) {
787 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
791 c->scache.memchunk.index += r;
792 assert(c->scache.memchunk.index <= c->scache.memchunk.length);
794 if (c->scache.memchunk.index == c->scache.memchunk.length) {
798 c->scache.memchunk.index = 0;
799 pa_scache_add_item(c->protocol->core, c->scache.name, &c->scache.sample_spec, &c->scache.memchunk, &index);
801 pa_memblock_unref(c->scache.memchunk.memblock);
802 c->scache.memchunk.memblock = NULL;
803 c->scache.memchunk.index = c->scache.memchunk.length = 0;
805 pa_xfree(c->scache.name);
806 c->scache.name = NULL;
808 c->state = ESD_NEXT_REQUEST;
810 ok = connection_write(c, sizeof(int));
815 } else if (c->state == ESD_STREAMING_DATA && c->sink_input) {
816 struct pa_memchunk chunk;
820 assert(c->input_memblockq);
822 /* pa_log("STREAMING_DATA\n"); */
824 if (!(l = pa_memblockq_missing(c->input_memblockq)))
827 if (l > c->playback.fragment_size)
828 l = c->playback.fragment_size;
830 if (c->playback.current_memblock)
831 if (c->playback.current_memblock->length - c->playback.memblock_index < l) {
832 pa_memblock_unref(c->playback.current_memblock);
833 c->playback.current_memblock = NULL;
834 c->playback.memblock_index = 0;
837 if (!c->playback.current_memblock) {
838 c->playback.current_memblock = pa_memblock_new(c->playback.fragment_size*2, c->protocol->core->memblock_stat);
839 assert(c->playback.current_memblock && c->playback.current_memblock->length >= l);
840 c->playback.memblock_index = 0;
843 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->playback.current_memblock->data+c->playback.memblock_index, l)) <= 0) {
844 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
848 /* pa_log(__FILE__": read %u\n", r); */
850 chunk.memblock = c->playback.current_memblock;
851 chunk.index = c->playback.memblock_index;
853 assert(chunk.memblock);
855 c->playback.memblock_index += r;
857 assert(c->input_memblockq);
858 pa_memblockq_push_align(c->input_memblockq, &chunk, 0);
859 assert(c->sink_input);
860 pa_sink_notify(c->sink_input->sink);
866 static int do_write(struct connection *c) {
869 /* pa_log("WRITE\n"); */
871 if (c->write_data_length) {
874 assert(c->write_data_index < c->write_data_length);
875 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) {
876 pa_log(__FILE__": write() failed: %s\n", strerror(errno));
880 if ((c->write_data_index +=r) >= c->write_data_length)
881 c->write_data_length = c->write_data_index = 0;
883 } else if (c->state == ESD_STREAMING_DATA && c->source_output) {
884 struct pa_memchunk chunk;
887 assert(c->output_memblockq);
888 if (pa_memblockq_peek(c->output_memblockq, &chunk) < 0)
891 assert(chunk.memblock && chunk.length);
893 if ((r = pa_iochannel_write(c->io, (uint8_t*) chunk.memblock->data+chunk.index, chunk.length)) < 0) {
894 pa_memblock_unref(chunk.memblock);
895 pa_log(__FILE__": write(): %s\n", strerror(errno));
899 pa_memblockq_drop(c->output_memblockq, &chunk, r);
900 pa_memblock_unref(chunk.memblock);
906 static void do_work(struct connection *c) {
909 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
910 c->protocol->core->mainloop->defer_enable(c->defer_event, 0);
912 /* pa_log("DOWORK %i\n", pa_iochannel_is_hungup(c->io)); */
914 if (!c->dead && pa_iochannel_is_readable(c->io))
918 if (!c->dead && pa_iochannel_is_writable(c->io))
922 /* In case the line was hungup, make sure to rerun this function
923 as soon as possible, until all data has been read. */
925 if (!c->dead && pa_iochannel_is_hungup(c->io))
926 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
932 if (c->state == ESD_STREAMING_DATA && c->sink_input) {
934 pa_memblockq_prebuf_disable(c->input_memblockq);
936 pa_iochannel_free(c->io);
943 static void io_callback(struct pa_iochannel*io, void *userdata) {
944 struct connection *c = userdata;
945 assert(io && c && c->io == io);
947 /* pa_log("IO\n"); */
952 /*** defer callback ***/
954 static void defer_callback(struct pa_mainloop_api*a, struct pa_defer_event *e, void *userdata) {
955 struct connection *c = userdata;
956 assert(a && c && c->defer_event == e);
958 /* pa_log("DEFER\n"); */
963 /*** sink_input callbacks ***/
965 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
967 assert(i && i->userdata && chunk);
970 if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
981 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
982 struct connection*c = i->userdata;
983 assert(i && c && length);
985 /* pa_log("DROP\n"); */
987 pa_memblockq_drop(c->input_memblockq, chunk, length);
990 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
993 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
995 /* assert(pa_memblockq_get_length(c->input_memblockq) > 2048); */
998 static void sink_input_kill_cb(struct pa_sink_input *i) {
999 assert(i && i->userdata);
1000 connection_free((struct connection *) i->userdata);
1003 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i) {
1004 struct connection*c = i->userdata;
1006 return pa_bytes_to_usec(pa_memblockq_get_length(c->input_memblockq), &c->sink_input->sample_spec);
1009 /*** source_output callbacks ***/
1011 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
1012 struct connection *c = o->userdata;
1013 assert(o && c && chunk);
1015 pa_memblockq_push(c->output_memblockq, chunk, 0);
1018 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
1021 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
1024 static void source_output_kill_cb(struct pa_source_output *o) {
1025 assert(o && o->userdata);
1026 connection_free((struct connection *) o->userdata);
1029 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o) {
1030 struct connection*c = o->userdata;
1032 return pa_bytes_to_usec(pa_memblockq_get_length(c->output_memblockq), &c->source_output->sample_spec);
1035 /*** socket server callback ***/
1037 static void auth_timeout(struct pa_mainloop_api*m, struct pa_time_event *e, const struct timeval *tv, void *userdata) {
1038 struct connection *c = userdata;
1039 assert(m && tv && c && c->auth_timeout_event == e);
1045 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1046 struct connection *c;
1047 struct pa_protocol_esound *p = userdata;
1049 assert(s && io && p);
1051 if (pa_idxset_ncontents(p->connections)+1 > MAX_CONNECTIONS) {
1052 pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.\n", MAX_CONNECTIONS);
1053 pa_iochannel_free(io);
1057 c = pa_xmalloc(sizeof(struct connection));
1060 pa_iochannel_set_callback(c->io, io_callback, c);
1062 pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
1064 c->client = pa_client_new(p->core, PA_TYPEID_ESOUND, cname);
1066 c->client->owner = p->module;
1067 c->client->kill = client_kill_cb;
1068 c->client->userdata = c;
1070 c->authorized = p->public;
1071 c->swap_byte_order = 0;
1074 c->read_data_length = 0;
1075 c->read_data = pa_xmalloc(c->read_data_alloc = proto_map[ESD_PROTO_CONNECT].data_length);
1077 c->write_data_length = c->write_data_index = c->write_data_alloc = 0;
1078 c->write_data = NULL;
1080 c->state = ESD_NEEDS_REQDATA;
1081 c->request = ESD_PROTO_CONNECT;
1083 c->sink_input = NULL;
1084 c->input_memblockq = NULL;
1086 c->source_output = NULL;
1087 c->output_memblockq = NULL;
1089 c->playback.current_memblock = NULL;
1090 c->playback.memblock_index = 0;
1091 c->playback.fragment_size = 0;
1093 c->scache.memchunk.length = c->scache.memchunk.index = 0;
1094 c->scache.memchunk.memblock = NULL;
1095 c->scache.name = NULL;
1097 if (!c->authorized) {
1099 gettimeofday(&tv, NULL);
1100 tv.tv_sec += AUTH_TIMEOUT;
1101 c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
1103 c->auth_timeout_event = NULL;
1105 c->defer_event = p->core->mainloop->defer_new(p->core->mainloop, defer_callback, c);
1106 assert(c->defer_event);
1107 p->core->mainloop->defer_enable(c->defer_event, 0);
1109 pa_idxset_put(p->connections, c, &c->index);
1112 /*** entry points ***/
1114 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) {
1115 struct pa_protocol_esound *p;
1117 assert(core && server && ma);
1119 p = pa_xmalloc(sizeof(struct pa_protocol_esound));
1121 if (pa_modargs_get_value_boolean(ma, "public", &public) < 0) {
1122 pa_log(__FILE__": public= expects a boolean argument.\n");
1126 if (pa_authkey_load_auto(pa_modargs_get_value(ma, "cookie", DEFAULT_COOKIE_FILE), p->esd_key, sizeof(p->esd_key)) < 0) {
1134 pa_socket_server_set_callback(p->server, on_connection, p);
1136 p->connections = pa_idxset_new(NULL, NULL);
1137 assert(p->connections);
1139 p->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
1140 p->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));
1146 void pa_protocol_esound_free(struct pa_protocol_esound *p) {
1147 struct connection *c;
1150 while ((c = pa_idxset_first(p->connections, NULL)))
1153 pa_idxset_free(p->connections, NULL, NULL);
1154 pa_socket_server_unref(p->server);