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 /* This is heavily based on esound's code */
71 struct pa_protocol_esound *protocol;
72 struct pa_iochannel *io;
73 struct pa_client *client;
74 int authorized, swap_byte_order;
76 size_t write_data_alloc, write_data_index, write_data_length;
78 size_t read_data_alloc, read_data_length;
80 esd_client_state_t state;
81 struct pa_sink_input *sink_input;
82 struct pa_source_output *source_output;
83 struct pa_memblockq *input_memblockq, *output_memblockq;
84 struct pa_defer_event *defer_event;
87 struct pa_memblock *current_memblock;
88 size_t memblock_index, fragment_size;
92 struct pa_memchunk memchunk;
94 struct pa_sample_spec sample_spec;
97 struct pa_time_event *auth_timeout_event;
100 struct pa_protocol_esound {
102 struct pa_module *module;
103 struct pa_core *core;
104 struct pa_socket_server *server;
105 struct pa_idxset *connections;
106 char *sink_name, *source_name;
108 uint8_t esd_key[ESD_KEY_LEN];
111 typedef struct proto_handler {
113 int (*proc)(struct connection *c, esd_proto_t request, const void *data, size_t length);
114 const char *description;
115 } esd_proto_handler_info_t;
117 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length);
118 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk);
119 static void sink_input_kill_cb(struct pa_sink_input *i);
120 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i);
121 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o);
123 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk);
124 static void source_output_kill_cb(struct pa_source_output *o);
126 static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length);
127 static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
128 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length);
129 static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length);
130 static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
131 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length);
132 static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length);
133 static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length);
134 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length);
135 static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length);
136 static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length);
138 /* the big map of protocol handler info */
139 static struct proto_handler proto_map[ESD_PROTO_MAX] = {
140 { ESD_KEY_LEN + sizeof(int), esd_proto_connect, "connect" },
141 { ESD_KEY_LEN + sizeof(int), NULL, "lock" },
142 { ESD_KEY_LEN + sizeof(int), NULL, "unlock" },
144 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_play, "stream play" },
145 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream rec" },
146 { ESD_NAME_MAX + 2 * sizeof(int), esd_proto_stream_record, "stream mon" },
148 { ESD_NAME_MAX + 3 * sizeof(int), esd_proto_sample_cache, "sample cache" }, /* 6 */
149 { sizeof(int), esd_proto_sample_free_or_play, "sample free" },
150 { sizeof(int), esd_proto_sample_free_or_play, "sample play" }, /* 8 */
151 { sizeof(int), NULL, "sample loop" },
152 { sizeof(int), NULL, "sample stop" },
153 { -1, NULL, "TODO: sample kill" },
155 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "standby" }, /* NOOP! */
156 { ESD_KEY_LEN + sizeof(int), esd_proto_standby_or_resume, "resume" }, /* NOOP! */ /* 13 */
158 { ESD_NAME_MAX, esd_proto_sample_get_id, "sample getid" }, /* 14 */
159 { ESD_NAME_MAX + 2 * sizeof(int), NULL, "stream filter" },
161 { sizeof(int), esd_proto_server_info, "server info" },
162 { sizeof(int), esd_proto_all_info, "all info" },
163 { -1, NULL, "TODO: subscribe" },
164 { -1, NULL, "TODO: unsubscribe" },
166 { 3 * sizeof(int), esd_proto_stream_pan, "stream pan"},
167 { 3 * sizeof(int), NULL, "sample pan" },
169 { sizeof(int), NULL, "standby mode" },
170 { 0, esd_proto_get_latency, "get latency" }
174 static void connection_free(struct connection *c) {
176 pa_idxset_remove_by_data(c->protocol->connections, c, NULL);
178 if (c->state == ESD_STREAMING_DATA)
179 c->protocol->n_player--;
181 pa_client_free(c->client);
184 pa_sink_input_disconnect(c->sink_input);
185 pa_sink_input_unref(c->sink_input);
188 if (c->source_output) {
189 pa_source_output_disconnect(c->source_output);
190 pa_source_output_unref(c->source_output);
193 if (c->input_memblockq)
194 pa_memblockq_free(c->input_memblockq);
195 if (c->output_memblockq)
196 pa_memblockq_free(c->output_memblockq);
198 if (c->playback.current_memblock)
199 pa_memblock_unref(c->playback.current_memblock);
201 pa_xfree(c->read_data);
202 pa_xfree(c->write_data);
205 pa_iochannel_free(c->io);
208 c->protocol->core->mainloop->defer_free(c->defer_event);
210 if (c->scache.memchunk.memblock)
211 pa_memblock_unref(c->scache.memchunk.memblock);
212 pa_xfree(c->scache.name);
214 if (c->auth_timeout_event)
215 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
220 static void* connection_write(struct connection *c, size_t length) {
224 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
225 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
227 t = c->write_data_length+length;
229 if (c->write_data_alloc < t)
230 c->write_data = pa_xrealloc(c->write_data, c->write_data_alloc = t);
232 assert(c->write_data);
234 i = c->write_data_length;
235 c->write_data_length += length;
237 return (uint8_t*) c->write_data+i;
240 static void format_esd2native(int format, struct pa_sample_spec *ss) {
243 ss->channels = ((format & ESD_MASK_CHAN) == ESD_STEREO) ? 2 : 1;
244 ss->format = ((format & ESD_MASK_BITS) == ESD_BITS16) ? PA_SAMPLE_S16NE : PA_SAMPLE_U8;
247 static int format_native2esd(struct pa_sample_spec *ss) {
250 format = (ss->format == PA_SAMPLE_U8) ? ESD_BITS8 : ESD_BITS16;
251 format |= (ss->channels >= 2) ? ESD_STEREO : ESD_MONO;
256 /*** esound commands ***/
258 static int esd_proto_connect(struct connection *c, esd_proto_t request, const void *data, size_t length) {
261 assert(length == (ESD_KEY_LEN + sizeof(uint32_t)));
263 if (!c->authorized) {
264 if (memcmp(data, c->protocol->esd_key, ESD_KEY_LEN) != 0) {
265 pa_log(__FILE__": kicked client with invalid authorization key.\n");
270 if (c->auth_timeout_event)
271 c->protocol->core->mainloop->time_free(c->auth_timeout_event);
274 ekey = *(uint32_t*)((uint8_t*) data+ESD_KEY_LEN);
275 if (ekey == ESD_ENDIAN_KEY)
276 c->swap_byte_order = 0;
277 else if (ekey == ESD_SWAP_ENDIAN_KEY)
278 c->swap_byte_order = 1;
280 pa_log(__FILE__": client sent invalid endian key\n");
284 ok = connection_write(c, sizeof(int));
290 static int esd_proto_stream_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
291 char name[ESD_NAME_MAX];
293 struct pa_sink *sink;
294 struct pa_sample_spec ss;
296 assert(c && length == (sizeof(int)*2+ESD_NAME_MAX));
298 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
299 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
302 format_esd2native(format, &ss);
304 if (!pa_sample_spec_valid(&ss))
307 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
308 pa_log(__FILE__": No output sink\n");
312 strncpy(name, (char*) data + sizeof(int)*2, sizeof(name));
313 name[sizeof(name)-1] = 0;
315 pa_client_set_name(c->client, name);
317 assert(!c->input_memblockq);
319 l = (size_t) (pa_bytes_per_second(&ss)*PLAYBACK_BUFFER_SECONDS);
320 c->input_memblockq = pa_memblockq_new(l, 0, pa_frame_size(&ss), l/2, l/PLAYBACK_BUFFER_FRAGMENTS, c->protocol->core->memblock_stat);
321 assert(c->input_memblockq);
322 pa_iochannel_socket_set_rcvbuf(c->io, l/PLAYBACK_BUFFER_FRAGMENTS*2);
323 c->playback.fragment_size = l/10;
325 assert(!c->sink_input);
326 c->sink_input = pa_sink_input_new(sink, name, &ss, 0, -1);
327 assert(c->sink_input);
329 c->sink_input->owner = c->protocol->module;
330 c->sink_input->client = c->client;
331 c->sink_input->peek = sink_input_peek_cb;
332 c->sink_input->drop = sink_input_drop_cb;
333 c->sink_input->kill = sink_input_kill_cb;
334 c->sink_input->get_latency = sink_input_get_latency_cb;
335 c->sink_input->userdata = c;
337 c->state = ESD_STREAMING_DATA;
339 c->protocol->n_player++;
344 static int esd_proto_stream_record(struct connection *c, esd_proto_t request, const void *data, size_t length) {
345 char name[ESD_NAME_MAX];
347 struct pa_source *source;
348 struct pa_sample_spec ss;
350 assert(c && length == (sizeof(int)*2+ESD_NAME_MAX));
352 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
353 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
356 format_esd2native(format, &ss);
358 if (!pa_sample_spec_valid(&ss))
361 if (request == ESD_PROTO_STREAM_MON) {
362 struct pa_sink* sink;
364 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
367 if (!(source = sink->monitor_source))
370 assert(request == ESD_PROTO_STREAM_REC);
372 if (!(source = pa_namereg_get(c->protocol->core, c->protocol->source_name, PA_NAMEREG_SOURCE, 1)))
376 strncpy(name, (char*) data + sizeof(int)*2, sizeof(name));
377 name[sizeof(name)-1] = 0;
379 pa_client_set_name(c->client, name);
381 assert(!c->output_memblockq);
383 l = (size_t) (pa_bytes_per_second(&ss)*RECORD_BUFFER_SECONDS);
384 c->output_memblockq = pa_memblockq_new(l, 0, pa_frame_size(&ss), 0, 0, c->protocol->core->memblock_stat);
385 assert(c->output_memblockq);
386 pa_iochannel_socket_set_sndbuf(c->io, l/RECORD_BUFFER_FRAGMENTS*2);
388 assert(!c->source_output);
389 c->source_output = pa_source_output_new(source, name, &ss, -1);
390 assert(c->source_output);
392 c->source_output->owner = c->protocol->module;
393 c->source_output->client = c->client;
394 c->source_output->push = source_output_push_cb;
395 c->source_output->kill = source_output_kill_cb;
396 c->source_output->get_latency = source_output_get_latency_cb;
397 c->source_output->userdata = c;
399 c->state = ESD_STREAMING_DATA;
401 c->protocol->n_player++;
406 static int esd_proto_get_latency(struct connection *c, esd_proto_t request, const void *data, size_t length) {
407 struct pa_sink *sink;
409 assert(c && !data && length == 0);
411 if (!(sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
414 double usec = pa_sink_get_latency(sink);
415 usec += PLAYBACK_BUFFER_SECONDS*1000000; /* A better estimation would be a good idea! */
416 latency = (int) ((usec*44100)/1000000);
419 lag = connection_write(c, sizeof(int));
421 *lag = c->swap_byte_order ? swap_endian_32(latency) : latency;
425 static int esd_proto_server_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
426 int rate = 44100, format = ESD_STEREO|ESD_BITS16;
428 struct pa_sink *sink;
429 assert(c && data && length == sizeof(int));
431 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1))) {
432 rate = sink->sample_spec.rate;
433 format = format_native2esd(&sink->sample_spec);
436 response = connection_write(c, sizeof(int)*3);
439 *(response++) = maybe_swap_endian_32(c->swap_byte_order, rate);
440 *(response++) = maybe_swap_endian_32(c->swap_byte_order, format);
444 static int esd_proto_all_info(struct connection *c, esd_proto_t request, const void *data, size_t length) {
447 struct connection *conn;
448 size_t index = PA_IDXSET_INVALID;
450 assert(c && data && length == sizeof(int));
452 if (esd_proto_server_info(c, request, data, length) < 0)
455 k = sizeof(int)*5+ESD_NAME_MAX;
456 s = sizeof(int)*6+ESD_NAME_MAX;
457 nsamples = c->protocol->core->scache ? pa_idxset_ncontents(c->protocol->core->scache) : 0;
458 response = connection_write(c, (t = s*(nsamples+1) + k*(c->protocol->n_player+1)));
461 for (conn = pa_idxset_first(c->protocol->connections, &index); conn; conn = pa_idxset_next(c->protocol->connections, &index)) {
462 int format = ESD_BITS16 | ESD_STEREO, rate = 44100, volume = 0xFF;
464 if (conn->state != ESD_STREAMING_DATA)
469 if (conn->sink_input) {
470 rate = conn->sink_input->sample_spec.rate;
471 volume = (conn->sink_input->volume*0xFF)/0x100;
472 format = format_native2esd(&conn->sink_input->sample_spec);
476 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) (conn->index+1));
477 response += sizeof(int);
480 assert(conn->client);
481 strncpy((char*) response, conn->client->name, ESD_NAME_MAX);
482 response += ESD_NAME_MAX;
485 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, rate);
486 response += sizeof(int);
489 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, volume);
490 response += sizeof(int);
493 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, volume);
494 response += sizeof(int);
497 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, format);
498 response += sizeof(int);
503 assert(t == s*(nsamples+1)+k);
504 memset(response, 0, k);
509 struct pa_scache_entry *ce;
511 index = PA_IDXSET_INVALID;
512 for (ce = pa_idxset_first(c->protocol->core->scache, &index); ce; ce = pa_idxset_next(c->protocol->core->scache, &index)) {
516 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) (ce->index+1));
517 response += sizeof(int);
520 if (strncmp(ce->name, SCACHE_PREFIX, sizeof(SCACHE_PREFIX)-1) == 0)
521 strncpy((char*) response, ce->name+sizeof(SCACHE_PREFIX)-1, ESD_NAME_MAX);
523 snprintf((char*) response, ESD_NAME_MAX, "native.%s", ce->name);
524 response += ESD_NAME_MAX;
527 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, ce->sample_spec.rate);
528 response += sizeof(int);
531 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (ce->volume*0xFF)/0x100);
532 response += sizeof(int);
535 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (ce->volume*0xFF)/0x100);
536 response += sizeof(int);
539 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, format_native2esd(&ce->sample_spec));
540 response += sizeof(int);
543 *((int*) response) = maybe_swap_endian_32(c->swap_byte_order, (int) ce->memchunk.length);
544 response += sizeof(int);
551 memset(response, 0, s);
556 static int esd_proto_stream_pan(struct connection *c, esd_proto_t request, const void *data, size_t length) {
558 uint32_t index, volume;
559 struct connection *conn;
560 assert(c && data && length == sizeof(int)*3);
562 index = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *(int*)data)-1;
563 volume = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
564 volume = (volume*0x100)/0xFF;
566 ok = connection_write(c, sizeof(int));
569 if ((conn = pa_idxset_get_by_index(c->protocol->connections, index))) {
570 assert(conn->sink_input);
571 conn->sink_input->volume = volume;
579 static int esd_proto_sample_cache(struct connection *c, esd_proto_t request, const void *data, size_t length) {
580 struct pa_sample_spec ss;
585 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
586 assert(c && data && length == (ESD_NAME_MAX+3*sizeof(int)));
588 format = maybe_swap_endian_32(c->swap_byte_order, *(int*)data);
589 rate = maybe_swap_endian_32(c->swap_byte_order, *((int*)data + 1));
592 format_esd2native(format, &ss);
594 sc_length = (size_t) maybe_swap_endian_32(c->swap_byte_order, (*((int*)data + 2)));
596 if (sc_length >= MAX_CACHE_SAMPLE_SIZE)
599 strcpy(name, SCACHE_PREFIX);
600 strncpy(name+sizeof(SCACHE_PREFIX)-1, (char*) data+3*sizeof(int), ESD_NAME_MAX);
601 name[sizeof(name)-1] = 0;
603 assert(!c->scache.memchunk.memblock);
604 c->scache.memchunk.memblock = pa_memblock_new(sc_length, c->protocol->core->memblock_stat);
605 c->scache.memchunk.index = 0;
606 c->scache.memchunk.length = sc_length;
607 c->scache.sample_spec = ss;
608 assert(!c->scache.name);
609 c->scache.name = pa_xstrdup(name);
611 c->state = ESD_CACHING_SAMPLE;
613 pa_scache_add_item(c->protocol->core, c->scache.name, NULL, NULL, &index);
615 ok = connection_write(c, sizeof(int));
623 static int esd_proto_sample_get_id(struct connection *c, esd_proto_t request, const void *data, size_t length) {
626 char name[ESD_NAME_MAX+sizeof(SCACHE_PREFIX)-1];
627 assert(c && data && length == ESD_NAME_MAX);
629 ok = connection_write(c, sizeof(int));
634 strcpy(name, SCACHE_PREFIX);
635 strncpy(name+sizeof(SCACHE_PREFIX)-1, data, ESD_NAME_MAX);
636 name[sizeof(name)-1] = 0;
638 if ((index = pa_scache_get_id_by_name(c->protocol->core, name)) != PA_IDXSET_INVALID)
639 *ok = (int) index +1;
644 static int esd_proto_sample_free_or_play(struct connection *c, esd_proto_t request, const void *data, size_t length) {
648 assert(c && data && length == sizeof(int));
650 index = (uint32_t) maybe_swap_endian_32(c->swap_byte_order, *(int*)data)-1;
652 ok = connection_write(c, sizeof(int));
657 if ((name = pa_scache_get_name_by_id(c->protocol->core, index))) {
658 if (request == ESD_PROTO_SAMPLE_PLAY) {
659 struct pa_sink *sink;
661 if ((sink = pa_namereg_get(c->protocol->core, c->protocol->sink_name, PA_NAMEREG_SINK, 1)))
662 if (pa_scache_play_item(c->protocol->core, name, sink, PA_VOLUME_NORM) >= 0)
665 assert(request == ESD_PROTO_SAMPLE_FREE);
667 if (pa_scache_remove_item(c->protocol->core, name) >= 0)
675 static int esd_proto_standby_or_resume(struct connection *c, esd_proto_t request, const void *data, size_t length) {
677 ok = connection_write(c, sizeof(int)*2);
684 /*** client callbacks ***/
686 static void client_kill_cb(struct pa_client *c) {
687 assert(c && c->userdata);
688 connection_free(c->userdata);
691 /*** pa_iochannel callbacks ***/
693 static int do_read(struct connection *c) {
696 /* pa_log("READ\n"); */
698 if (c->state == ESD_NEXT_REQUEST) {
700 assert(c->read_data_length < sizeof(c->request));
702 if ((r = pa_iochannel_read(c->io, ((uint8_t*) &c->request) + c->read_data_length, sizeof(c->request) - c->read_data_length)) <= 0) {
703 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
707 if ((c->read_data_length+= r) >= sizeof(c->request)) {
708 struct proto_handler *handler;
710 if (c->swap_byte_order)
711 c->request = swap_endian_32(c->request);
713 if (c->request < ESD_PROTO_CONNECT || c->request > ESD_PROTO_MAX) {
714 pa_log(__FILE__": recieved invalid request.\n");
718 handler = proto_map+c->request;
720 /* pa_log(__FILE__": executing request #%u\n", c->request); */
722 if (!handler->proc) {
723 pa_log(__FILE__": recieved unimplemented request #%u.\n", c->request);
727 if (handler->data_length == 0) {
728 c->read_data_length = 0;
730 if (handler->proc(c, c->request, NULL, 0) < 0)
734 if (c->read_data_alloc < handler->data_length)
735 c->read_data = pa_xrealloc(c->read_data, c->read_data_alloc = handler->data_length);
736 assert(c->read_data);
738 c->state = ESD_NEEDS_REQDATA;
739 c->read_data_length = 0;
743 } else if (c->state == ESD_NEEDS_REQDATA) {
745 struct proto_handler *handler = proto_map+c->request;
747 assert(handler->proc);
749 assert(c->read_data && c->read_data_length < handler->data_length);
751 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->read_data + c->read_data_length, handler->data_length - c->read_data_length)) <= 0) {
752 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
756 if ((c->read_data_length+= r) >= handler->data_length) {
757 size_t l = c->read_data_length;
758 assert(handler->proc);
760 c->state = ESD_NEXT_REQUEST;
761 c->read_data_length = 0;
763 if (handler->proc(c, c->request, c->read_data, l) < 0)
766 } else if (c->state == ESD_CACHING_SAMPLE) {
769 assert(c->scache.memchunk.memblock && c->scache.name && c->scache.memchunk.index < c->scache.memchunk.length);
771 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) {
772 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
776 c->scache.memchunk.index += r;
777 assert(c->scache.memchunk.index <= c->scache.memchunk.length);
779 if (c->scache.memchunk.index == c->scache.memchunk.length) {
783 c->scache.memchunk.index = 0;
784 pa_scache_add_item(c->protocol->core, c->scache.name, &c->scache.sample_spec, &c->scache.memchunk, &index);
786 pa_memblock_unref(c->scache.memchunk.memblock);
787 c->scache.memchunk.memblock = NULL;
788 c->scache.memchunk.index = c->scache.memchunk.length = 0;
790 pa_xfree(c->scache.name);
791 c->scache.name = NULL;
793 c->state = ESD_NEXT_REQUEST;
795 ok = connection_write(c, sizeof(int));
800 } else if (c->state == ESD_STREAMING_DATA && c->sink_input) {
801 struct pa_memchunk chunk;
805 assert(c->input_memblockq);
807 /* pa_log("STREAMING_DATA\n"); */
809 if (!(l = pa_memblockq_missing(c->input_memblockq)))
812 if (l > c->playback.fragment_size)
813 l = c->playback.fragment_size;
815 if (c->playback.current_memblock)
816 if (c->playback.current_memblock->length - c->playback.memblock_index < l) {
817 pa_memblock_unref(c->playback.current_memblock);
818 c->playback.current_memblock = NULL;
819 c->playback.memblock_index = 0;
822 if (!c->playback.current_memblock) {
823 c->playback.current_memblock = pa_memblock_new(c->playback.fragment_size*2, c->protocol->core->memblock_stat);
824 assert(c->playback.current_memblock && c->playback.current_memblock->length >= l);
825 c->playback.memblock_index = 0;
828 if ((r = pa_iochannel_read(c->io, (uint8_t*) c->playback.current_memblock->data+c->playback.memblock_index, l)) <= 0) {
829 pa_log(__FILE__": read() failed: %s\n", r == 0 ? "EOF" : strerror(errno));
833 /* pa_log(__FILE__": read %u\n", r); */
835 chunk.memblock = c->playback.current_memblock;
836 chunk.index = c->playback.memblock_index;
838 assert(chunk.memblock);
840 c->playback.memblock_index += r;
842 assert(c->input_memblockq);
843 pa_memblockq_push_align(c->input_memblockq, &chunk, 0);
844 assert(c->sink_input);
845 pa_sink_notify(c->sink_input->sink);
851 static int do_write(struct connection *c) {
854 /* pa_log("WRITE\n"); */
856 if (c->write_data_length) {
859 assert(c->write_data_index < c->write_data_length);
860 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) {
861 pa_log(__FILE__": write() failed: %s\n", strerror(errno));
865 if ((c->write_data_index +=r) >= c->write_data_length)
866 c->write_data_length = c->write_data_index = 0;
868 } else if (c->state == ESD_STREAMING_DATA && c->source_output) {
869 struct pa_memchunk chunk;
872 assert(c->output_memblockq);
873 if (pa_memblockq_peek(c->output_memblockq, &chunk) < 0)
876 assert(chunk.memblock && chunk.length);
878 if ((r = pa_iochannel_write(c->io, (uint8_t*) chunk.memblock->data+chunk.index, chunk.length)) < 0) {
879 pa_memblock_unref(chunk.memblock);
880 pa_log(__FILE__": write(): %s\n", strerror(errno));
884 pa_memblockq_drop(c->output_memblockq, &chunk, r);
885 pa_memblock_unref(chunk.memblock);
891 static void do_work(struct connection *c) {
894 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
895 c->protocol->core->mainloop->defer_enable(c->defer_event, 0);
897 /* pa_log("DOWORK\n"); */
899 if (c->dead || !c->io)
902 if (pa_iochannel_is_readable(c->io))
906 if (pa_iochannel_is_writable(c->io))
914 if (c->state == ESD_STREAMING_DATA && c->sink_input) {
916 pa_memblockq_prebuf_disable(c->input_memblockq);
918 pa_iochannel_free(c->io);
925 static void io_callback(struct pa_iochannel*io, void *userdata) {
926 struct connection *c = userdata;
927 assert(io && c && c->io == io);
929 /* pa_log("IO\n"); */
934 /*** defer callback ***/
936 static void defer_callback(struct pa_mainloop_api*a, struct pa_defer_event *e, void *userdata) {
937 struct connection *c = userdata;
938 assert(a && c && c->defer_event == e);
940 /* pa_log("DEFER\n"); */
945 /*** sink_input callbacks ***/
947 static int sink_input_peek_cb(struct pa_sink_input *i, struct pa_memchunk *chunk) {
949 assert(i && i->userdata && chunk);
952 if (pa_memblockq_peek(c->input_memblockq, chunk) < 0) {
963 static void sink_input_drop_cb(struct pa_sink_input *i, const struct pa_memchunk *chunk, size_t length) {
964 struct connection*c = i->userdata;
965 assert(i && c && length);
967 /* pa_log("DROP\n"); */
969 pa_memblockq_drop(c->input_memblockq, chunk, length);
972 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
975 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
977 /* assert(pa_memblockq_get_length(c->input_memblockq) > 2048); */
980 static void sink_input_kill_cb(struct pa_sink_input *i) {
981 assert(i && i->userdata);
982 connection_free((struct connection *) i->userdata);
985 static pa_usec_t sink_input_get_latency_cb(struct pa_sink_input *i) {
986 struct connection*c = i->userdata;
988 return pa_bytes_to_usec(pa_memblockq_get_length(c->input_memblockq), &c->sink_input->sample_spec);
991 /*** source_output callbacks ***/
993 static void source_output_push_cb(struct pa_source_output *o, const struct pa_memchunk *chunk) {
994 struct connection *c = o->userdata;
995 assert(o && c && chunk);
997 pa_memblockq_push(c->output_memblockq, chunk, 0);
1000 assert(c->protocol && c->protocol->core && c->protocol->core->mainloop && c->protocol->core->mainloop->defer_enable);
1003 c->protocol->core->mainloop->defer_enable(c->defer_event, 1);
1006 static void source_output_kill_cb(struct pa_source_output *o) {
1007 assert(o && o->userdata);
1008 connection_free((struct connection *) o->userdata);
1011 static pa_usec_t source_output_get_latency_cb(struct pa_source_output *o) {
1012 struct connection*c = o->userdata;
1014 return pa_bytes_to_usec(pa_memblockq_get_length(c->output_memblockq), &c->source_output->sample_spec);
1017 /*** socket server callback ***/
1019 static void auth_timeout(struct pa_mainloop_api*m, struct pa_time_event *e, const struct timeval *tv, void *userdata) {
1020 struct connection *c = userdata;
1021 assert(m && tv && c && c->auth_timeout_event == e);
1027 static void on_connection(struct pa_socket_server*s, struct pa_iochannel *io, void *userdata) {
1028 struct connection *c;
1029 struct pa_protocol_esound *p = userdata;
1031 assert(s && io && p);
1033 if (pa_idxset_ncontents(p->connections)+1 > MAX_CONNECTIONS) {
1034 pa_log(__FILE__": Warning! Too many connections (%u), dropping incoming connection.\n", MAX_CONNECTIONS);
1035 pa_iochannel_free(io);
1039 c = pa_xmalloc(sizeof(struct connection));
1042 pa_iochannel_set_callback(c->io, io_callback, c);
1044 pa_iochannel_socket_peer_to_string(io, cname, sizeof(cname));
1046 c->client = pa_client_new(p->core, "ESOUND", cname);
1048 c->client->owner = p->module;
1049 c->client->kill = client_kill_cb;
1050 c->client->userdata = c;
1052 c->authorized = p->public;
1053 c->swap_byte_order = 0;
1056 c->read_data_length = 0;
1057 c->read_data = pa_xmalloc(c->read_data_alloc = proto_map[ESD_PROTO_CONNECT].data_length);
1059 c->write_data_length = c->write_data_index = c->write_data_alloc = 0;
1060 c->write_data = NULL;
1062 c->state = ESD_NEEDS_REQDATA;
1063 c->request = ESD_PROTO_CONNECT;
1065 c->sink_input = NULL;
1066 c->input_memblockq = NULL;
1068 c->source_output = NULL;
1069 c->output_memblockq = NULL;
1071 c->playback.current_memblock = NULL;
1072 c->playback.memblock_index = 0;
1073 c->playback.fragment_size = 0;
1075 c->scache.memchunk.length = c->scache.memchunk.index = 0;
1076 c->scache.memchunk.memblock = NULL;
1077 c->scache.name = NULL;
1079 if (!c->authorized) {
1081 gettimeofday(&tv, NULL);
1082 tv.tv_sec += AUTH_TIMEOUT;
1083 c->auth_timeout_event = p->core->mainloop->time_new(p->core->mainloop, &tv, auth_timeout, c);
1085 c->auth_timeout_event = NULL;
1087 c->defer_event = p->core->mainloop->defer_new(p->core->mainloop, defer_callback, c);
1088 assert(c->defer_event);
1089 p->core->mainloop->defer_enable(c->defer_event, 0);
1091 pa_idxset_put(p->connections, c, &c->index);
1094 /*** entry points ***/
1096 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) {
1097 struct pa_protocol_esound *p;
1099 assert(core && server && ma);
1101 p = pa_xmalloc(sizeof(struct pa_protocol_esound));
1103 if (pa_modargs_get_value_boolean(ma, "public", &public) < 0) {
1104 pa_log(__FILE__": public= expects a boolean argument.\n");
1108 if (pa_authkey_load_auto(pa_modargs_get_value(ma, "cookie", DEFAULT_COOKIE_FILE), p->esd_key, sizeof(p->esd_key)) < 0) {
1116 pa_socket_server_set_callback(p->server, on_connection, p);
1118 p->connections = pa_idxset_new(NULL, NULL);
1119 assert(p->connections);
1121 p->sink_name = pa_xstrdup(pa_modargs_get_value(ma, "sink", NULL));
1122 p->source_name = pa_xstrdup(pa_modargs_get_value(ma, "source", NULL));
1128 void pa_protocol_esound_free(struct pa_protocol_esound *p) {
1129 struct connection *c;
1132 while ((c = pa_idxset_first(p->connections, NULL)))
1135 pa_idxset_free(p->connections, NULL, NULL);
1136 pa_socket_server_unref(p->server);