4 This file is part of polypaudio.
6 polypaudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published
8 by the Free Software Foundation; either version 2 of the License,
9 or (at your option) any later version.
11 polypaudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with polypaudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
30 #include <sys/types.h>
31 #include <sys/socket.h>
34 #include "polyplib-internal.h"
35 #include "polyplib-context.h"
36 #include "native-common.h"
37 #include "pdispatch.h"
40 #include "socket-client.h"
41 #include "pstream-util.h"
46 static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
47 [PA_COMMAND_REQUEST] = { pa_command_request },
48 [PA_COMMAND_PLAYBACK_STREAM_KILLED] = { pa_command_stream_killed },
49 [PA_COMMAND_RECORD_STREAM_KILLED] = { pa_command_stream_killed },
50 [PA_COMMAND_SUBSCRIBE_EVENT] = { pa_command_subscribe_event },
53 struct pa_context *pa_context_new(struct pa_mainloop_api *mainloop, const char *name) {
55 assert(mainloop && name);
57 c = pa_xmalloc(sizeof(struct pa_context));
59 c->name = pa_xstrdup(name);
60 c->mainloop = mainloop;
64 c->playback_streams = pa_dynarray_new();
65 c->record_streams = pa_dynarray_new();
66 assert(c->playback_streams && c->record_streams);
68 PA_LLIST_HEAD_INIT(struct pa_stream, c->streams);
69 PA_LLIST_HEAD_INIT(struct pa_operation, c->operations);
71 c->error = PA_ERROR_OK;
72 c->state = PA_CONTEXT_UNCONNECTED;
75 c->state_callback = NULL;
76 c->state_userdata = NULL;
78 c->subscribe_callback = NULL;
79 c->subscribe_userdata = NULL;
81 c->memblock_stat = pa_memblock_stat_new();
83 pa_check_for_sigpipe();
87 static void context_free(struct pa_context *c) {
91 pa_operation_cancel(c->operations);
94 pa_stream_set_state(c->streams, PA_STREAM_TERMINATED);
97 pa_socket_client_unref(c->client);
99 pa_pdispatch_unref(c->pdispatch);
101 pa_pstream_close(c->pstream);
102 pa_pstream_unref(c->pstream);
105 if (c->record_streams)
106 pa_dynarray_free(c->record_streams, NULL, NULL);
107 if (c->playback_streams)
108 pa_dynarray_free(c->playback_streams, NULL, NULL);
110 pa_memblock_stat_unref(c->memblock_stat);
116 struct pa_context* pa_context_ref(struct pa_context *c) {
117 assert(c && c->ref >= 1);
122 void pa_context_unref(struct pa_context *c) {
123 assert(c && c->ref >= 1);
125 if ((--(c->ref)) == 0)
129 void pa_context_set_state(struct pa_context *c, enum pa_context_state st) {
137 if (st == PA_CONTEXT_FAILED || st == PA_CONTEXT_TERMINATED) {
140 s = c->streams ? pa_stream_ref(c->streams) : NULL;
142 struct pa_stream *n = s->next ? pa_stream_ref(s->next) : NULL;
143 pa_stream_set_state(s, st == PA_CONTEXT_FAILED ? PA_STREAM_FAILED : PA_STREAM_TERMINATED);
149 pa_pdispatch_unref(c->pdispatch);
153 pa_pstream_close(c->pstream);
154 pa_pstream_unref(c->pstream);
159 pa_socket_client_unref(c->client);
164 if (c->state_callback)
165 c->state_callback(c, c->state_userdata);
170 void pa_context_fail(struct pa_context *c, int error) {
173 pa_context_set_state(c, PA_CONTEXT_FAILED);
176 static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
177 struct pa_context *c = userdata;
179 pa_context_fail(c, PA_ERROR_CONNECTIONTERMINATED);
182 static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
183 struct pa_context *c = userdata;
184 assert(p && packet && c);
188 if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
189 fprintf(stderr, "polyp.c: invalid packet.\n");
190 pa_context_fail(c, PA_ERROR_PROTOCOL);
196 static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata) {
197 struct pa_context *c = userdata;
199 assert(p && chunk && c && chunk->memblock && chunk->memblock->data);
203 if ((s = pa_dynarray_get(c->record_streams, channel))) {
204 if (s->read_callback)
205 s->read_callback(s, chunk->memblock->data + chunk->index, chunk->length, s->read_userdata);
211 int pa_context_handle_error(struct pa_context *c, uint32_t command, struct pa_tagstruct *t) {
214 if (command == PA_COMMAND_ERROR) {
215 if (pa_tagstruct_getu32(t, &c->error) < 0) {
216 pa_context_fail(c, PA_ERROR_PROTOCOL);
220 } else if (command == PA_COMMAND_TIMEOUT)
221 c->error = PA_ERROR_TIMEOUT;
223 pa_context_fail(c, PA_ERROR_PROTOCOL);
230 static void setup_complete_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
231 struct pa_context *c = userdata;
232 assert(pd && c && (c->state == PA_CONTEXT_AUTHORIZING || c->state == PA_CONTEXT_SETTING_NAME));
236 if (command != PA_COMMAND_REPLY) {
237 if (pa_context_handle_error(c, command, t) < 0)
238 pa_context_fail(c, PA_ERROR_PROTOCOL);
244 case PA_CONTEXT_AUTHORIZING: {
245 struct pa_tagstruct *t;
246 t = pa_tagstruct_new(NULL, 0);
248 pa_tagstruct_putu32(t, PA_COMMAND_SET_NAME);
249 pa_tagstruct_putu32(t, tag = c->ctag++);
250 pa_tagstruct_puts(t, c->name);
251 pa_pstream_send_tagstruct(c->pstream, t);
252 pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
254 pa_context_set_state(c, PA_CONTEXT_SETTING_NAME);
258 case PA_CONTEXT_SETTING_NAME :
259 pa_context_set_state(c, PA_CONTEXT_READY);
270 static void on_connection(struct pa_socket_client *client, struct pa_iochannel*io, void *userdata) {
271 struct pa_context *c = userdata;
272 struct pa_tagstruct *t;
274 assert(client && c && c->state == PA_CONTEXT_CONNECTING);
278 pa_socket_client_unref(client);
282 pa_context_fail(c, PA_ERROR_CONNECTIONREFUSED);
287 c->pstream = pa_pstream_new(c->mainloop, io, c->memblock_stat);
290 pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
291 pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
292 pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
294 assert(!c->pdispatch);
295 c->pdispatch = pa_pdispatch_new(c->mainloop, command_table, PA_COMMAND_MAX);
296 assert(c->pdispatch);
298 t = pa_tagstruct_new(NULL, 0);
300 pa_tagstruct_putu32(t, PA_COMMAND_AUTH);
301 pa_tagstruct_putu32(t, tag = c->ctag++);
302 pa_tagstruct_put_arbitrary(t, c->auth_cookie, sizeof(c->auth_cookie));
303 pa_pstream_send_tagstruct(c->pstream, t);
304 pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
306 pa_context_set_state(c, PA_CONTEXT_AUTHORIZING);
312 static struct sockaddr *resolve_server(const char *server, size_t *len) {
314 struct addrinfo hints, *result = NULL;
316 assert(server && len);
318 if ((port = strrchr(server, ':')))
323 memset(&hints, 0, sizeof(hints));
324 hints.ai_family = PF_UNSPEC;
325 hints.ai_socktype = SOCK_STREAM;
326 hints.ai_protocol = 0;
328 if (getaddrinfo(server, port, &hints, &result) != 0)
332 sa = pa_xmalloc(*len = result->ai_addrlen);
333 memcpy(sa, result->ai_addr, *len);
335 freeaddrinfo(result);
340 int pa_context_connect(struct pa_context *c, const char *server) {
342 assert(c && c->ref >= 1 && c->state == PA_CONTEXT_UNCONNECTED);
346 if (pa_authkey_load_from_home(PA_NATIVE_COOKIE_FILE, c->auth_cookie, sizeof(c->auth_cookie)) < 0) {
347 pa_context_fail(c, PA_ERROR_AUTHKEY);
352 if (!(server = getenv(ENV_DEFAULT_SERVER)))
353 server = DEFAULT_SERVER;
357 if (*server == '/') {
358 if (!(c->client = pa_socket_client_new_unix(c->mainloop, server))) {
359 pa_context_fail(c, PA_ERROR_CONNECTIONREFUSED);
366 if (!(sa = resolve_server(server, &sa_len))) {
367 pa_context_fail(c, PA_ERROR_INVALIDSERVER);
371 c->client = pa_socket_client_new_sockaddr(c->mainloop, sa, sa_len);
375 pa_context_fail(c, PA_ERROR_CONNECTIONREFUSED);
380 pa_socket_client_set_callback(c->client, on_connection, c);
381 pa_context_set_state(c, PA_CONTEXT_CONNECTING);
391 void pa_context_disconnect(struct pa_context *c) {
393 pa_context_set_state(c, PA_CONTEXT_TERMINATED);
396 enum pa_context_state pa_context_get_state(struct pa_context *c) {
397 assert(c && c->ref >= 1);
401 int pa_context_errno(struct pa_context *c) {
402 assert(c && c->ref >= 1);
406 void pa_context_set_state_callback(struct pa_context *c, void (*cb)(struct pa_context *c, void *userdata), void *userdata) {
407 assert(c && c->ref >= 1);
408 c->state_callback = cb;
409 c->state_userdata = userdata;
412 int pa_context_is_pending(struct pa_context *c) {
413 assert(c && c->ref >= 1);
415 if (c->state != PA_CONTEXT_READY)
418 assert(c->pstream && c->pdispatch);
419 return pa_pstream_is_pending(c->pstream) || pa_pdispatch_is_pending(c->pdispatch);
422 static void set_dispatch_callbacks(struct pa_operation *o);
424 static void pdispatch_drain_callback(struct pa_pdispatch*pd, void *userdata) {
425 set_dispatch_callbacks(userdata);
428 static void pstream_drain_callback(struct pa_pstream *s, void *userdata) {
429 set_dispatch_callbacks(userdata);
432 static void set_dispatch_callbacks(struct pa_operation *o) {
434 assert(o && o->context && o->context->ref >= 1 && o->ref >= 1 && o->context->state == PA_CONTEXT_READY);
436 pa_pstream_set_drain_callback(o->context->pstream, NULL, NULL);
437 pa_pdispatch_set_drain_callback(o->context->pdispatch, NULL, NULL);
439 if (pa_pdispatch_is_pending(o->context->pdispatch)) {
440 pa_pdispatch_set_drain_callback(o->context->pdispatch, pdispatch_drain_callback, o);
444 if (pa_pstream_is_pending(o->context->pstream)) {
445 pa_pstream_set_drain_callback(o->context->pstream, pstream_drain_callback, o);
453 void (*cb)(struct pa_context *c, void *userdata);
454 cb = (void*) o->callback;
455 cb(o->context, o->userdata);
458 pa_operation_done(o);
461 pa_operation_unref(o);
464 struct pa_operation* pa_context_drain(struct pa_context *c, void (*cb) (struct pa_context*c, void *userdata), void *userdata) {
465 struct pa_operation *o;
466 assert(c && c->ref >= 1 && c->state == PA_CONTEXT_READY);
468 if (!pa_context_is_pending(c))
471 o = pa_operation_new(c, NULL);
474 o->userdata = userdata;
476 set_dispatch_callbacks(pa_operation_ref(o));
481 void pa_context_exit_daemon(struct pa_context *c) {
482 struct pa_tagstruct *t;
483 assert(c && c->ref >= 1);
485 t = pa_tagstruct_new(NULL, 0);
487 pa_tagstruct_putu32(t, PA_COMMAND_EXIT);
488 pa_tagstruct_putu32(t, c->ctag++);
489 pa_pstream_send_tagstruct(c->pstream, t);
492 void pa_context_simple_ack_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
493 struct pa_operation *o = userdata;
495 assert(pd && o && o->context && o->ref >= 1);
497 if (command != PA_COMMAND_REPLY) {
498 if (pa_context_handle_error(o->context, command, t) < 0)
502 } else if (!pa_tagstruct_eof(t)) {
503 pa_context_fail(o->context, PA_ERROR_PROTOCOL);
508 void (*cb)(struct pa_context *c, int success, void *userdata) = o->callback;
509 cb(o->context, success, o->userdata);
513 pa_operation_done(o);
514 pa_operation_unref(o);
517 struct pa_operation* pa_context_send_simple_command(struct pa_context *c, uint32_t command, void (*internal_callback)(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata), void (*cb)(), void *userdata) {
518 struct pa_tagstruct *t;
519 struct pa_operation *o;
523 o = pa_operation_new(c, NULL);
525 o->userdata = userdata;
527 t = pa_tagstruct_new(NULL, 0);
528 pa_tagstruct_putu32(t, command);
529 pa_tagstruct_putu32(t, tag = c->ctag++);
530 pa_pstream_send_tagstruct(c->pstream, t);
531 pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, internal_callback, o);
533 return pa_operation_ref(o);