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pulseaudio/src/polyp/context.c
Pierre Ossman 5342f3aef1 Win32 needs to have the socket subsystem initialised. 
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@758 fefdeb5f-60dc-0310-8127-8f9354f1896f
2006-04-19 11:54:43 +00:00

991 lines
25 KiB
C
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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
polypaudio is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with polypaudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <errno.h>
#include <signal.h>
#include <limits.h>
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include "../polypcore/winsock.h"
#include <polyp/version.h>
#include <polypcore/native-common.h>
#include <polypcore/pdispatch.h>
#include <polypcore/pstream.h>
#include <polypcore/dynarray.h>
#include <polypcore/socket-client.h>
#include <polypcore/pstream-util.h>
#include <polypcore/util.h>
#include <polypcore/xmalloc.h>
#include <polypcore/log.h>
#include <polypcore/socket-util.h>
#include "internal.h"
#include "client-conf.h"
#ifdef HAVE_X11
#include "client-conf-x11.h"
#endif
#include "context.h"
#define AUTOSPAWN_LOCK "autospawn.lock"
static const pa_pdispatch_cb_t command_table[PA_COMMAND_MAX] = {
[PA_COMMAND_REQUEST] = pa_command_request,
[PA_COMMAND_OVERFLOW] = pa_command_overflow_or_underflow,
[PA_COMMAND_UNDERFLOW] = pa_command_overflow_or_underflow,
[PA_COMMAND_PLAYBACK_STREAM_KILLED] = pa_command_stream_killed,
[PA_COMMAND_RECORD_STREAM_KILLED] = pa_command_stream_killed,
[PA_COMMAND_SUBSCRIBE_EVENT] = pa_command_subscribe_event
};
static void unlock_autospawn_lock_file(pa_context *c) {
assert(c);
if (c->autospawn_lock_fd >= 0) {
char lf[PATH_MAX];
pa_runtime_path(AUTOSPAWN_LOCK, lf, sizeof(lf));
pa_unlock_lockfile(lf, c->autospawn_lock_fd);
c->autospawn_lock_fd = -1;
}
}
pa_context *pa_context_new(pa_mainloop_api *mainloop, const char *name) {
pa_context *c;
assert(mainloop);
assert(name);
c = pa_xnew(pa_context, 1);
c->ref = 1;
c->name = pa_xstrdup(name);
c->mainloop = mainloop;
c->client = NULL;
c->pstream = NULL;
c->pdispatch = NULL;
c->playback_streams = pa_dynarray_new();
c->record_streams = pa_dynarray_new();
PA_LLIST_HEAD_INIT(pa_stream, c->streams);
PA_LLIST_HEAD_INIT(pa_operation, c->operations);
c->error = PA_OK;
c->state = PA_CONTEXT_UNCONNECTED;
c->ctag = 0;
c->csyncid = 0;
c->state_callback = NULL;
c->state_userdata = NULL;
c->subscribe_callback = NULL;
c->subscribe_userdata = NULL;
c->memblock_stat = pa_memblock_stat_new();
c->local = -1;
c->server_list = NULL;
c->server = NULL;
c->autospawn_lock_fd = -1;
memset(&c->spawn_api, 0, sizeof(c->spawn_api));
c->do_autospawn = 0;
#ifdef SIGPIPE
pa_check_signal_is_blocked(SIGPIPE);
#endif
c->conf = pa_client_conf_new();
pa_client_conf_load(c->conf, NULL);
#ifdef HAVE_X11
pa_client_conf_from_x11(c->conf, NULL);
#endif
pa_client_conf_env(c->conf);
#ifdef OS_IS_WIN32
{
WSADATA data;
WSAStartup(MAKEWORD(2, 0), &data);
}
#endif
return c;
}
static void context_free(pa_context *c) {
assert(c);
unlock_autospawn_lock_file(c);
while (c->operations)
pa_operation_cancel(c->operations);
while (c->streams)
pa_stream_set_state(c->streams, PA_STREAM_TERMINATED);
if (c->client)
pa_socket_client_unref(c->client);
if (c->pdispatch)
pa_pdispatch_unref(c->pdispatch);
if (c->pstream) {
pa_pstream_close(c->pstream);
pa_pstream_unref(c->pstream);
}
if (c->record_streams)
pa_dynarray_free(c->record_streams, NULL, NULL);
if (c->playback_streams)
pa_dynarray_free(c->playback_streams, NULL, NULL);
pa_memblock_stat_unref(c->memblock_stat);
if (c->conf)
pa_client_conf_free(c->conf);
pa_strlist_free(c->server_list);
pa_xfree(c->name);
pa_xfree(c->server);
pa_xfree(c);
#ifdef OS_IS_WIN32
WSACleanup();
#endif
}
pa_context* pa_context_ref(pa_context *c) {
assert(c);
assert(c->ref >= 1);
c->ref++;
return c;
}
void pa_context_unref(pa_context *c) {
assert(c);
assert(c->ref >= 1);
if (--c->ref <= 0)
context_free(c);
}
void pa_context_set_state(pa_context *c, pa_context_state_t st) {
assert(c);
assert(c->ref >= 1);
if (c->state == st)
return;
pa_context_ref(c);
if (st == PA_CONTEXT_FAILED || st == PA_CONTEXT_TERMINATED) {
pa_stream *s;
s = c->streams ? pa_stream_ref(c->streams) : NULL;
while (s) {
pa_stream *n = s->next ? pa_stream_ref(s->next) : NULL;
pa_stream_set_state(s, st == PA_CONTEXT_FAILED ? PA_STREAM_FAILED : PA_STREAM_TERMINATED);
pa_stream_unref(s);
s = n;
}
if (c->pdispatch)
pa_pdispatch_unref(c->pdispatch);
c->pdispatch = NULL;
if (c->pstream) {
pa_pstream_close(c->pstream);
pa_pstream_unref(c->pstream);
}
c->pstream = NULL;
if (c->client)
pa_socket_client_unref(c->client);
c->client = NULL;
}
c->state = st;
if (c->state_callback)
c->state_callback(c, c->state_userdata);
pa_context_unref(c);
}
void pa_context_fail(pa_context *c, int error) {
assert(c);
assert(c->ref >= 1);
pa_context_set_error(c, error);
pa_context_set_state(c, PA_CONTEXT_FAILED);
}
int pa_context_set_error(pa_context *c, int error) {
assert(error >= 0);
assert(error < PA_ERR_MAX);
if (c)
c->error = error;
return error;
}
static void pstream_die_callback(pa_pstream *p, void *userdata) {
pa_context *c = userdata;
assert(p);
assert(c);
pa_context_fail(c, PA_ERR_CONNECTIONTERMINATED);
}
static void pstream_packet_callback(pa_pstream *p, pa_packet *packet, const void *creds, void *userdata) {
pa_context *c = userdata;
assert(p);
assert(packet);
assert(c);
pa_context_ref(c);
if (pa_pdispatch_run(c->pdispatch, packet, creds, c) < 0)
pa_context_fail(c, PA_ERR_PROTOCOL);
pa_context_unref(c);
}
static void pstream_memblock_callback(pa_pstream *p, uint32_t channel, int64_t offset, pa_seek_mode_t seek, const pa_memchunk *chunk, void *userdata) {
pa_context *c = userdata;
pa_stream *s;
assert(p);
assert(chunk);
assert(chunk->memblock);
assert(chunk->length);
assert(c);
assert(c->ref >= 1);
pa_context_ref(c);
if ((s = pa_dynarray_get(c->record_streams, channel))) {
assert(seek == PA_SEEK_RELATIVE && offset == 0);
pa_memblockq_seek(s->record_memblockq, offset, seek);
pa_memblockq_push_align(s->record_memblockq, chunk);
if (s->read_callback) {
size_t l;
if ((l = pa_memblockq_get_length(s->record_memblockq)) > 0)
s->read_callback(s, l, s->read_userdata);
}
}
pa_context_unref(c);
}
int pa_context_handle_error(pa_context *c, uint32_t command, pa_tagstruct *t) {
assert(c);
assert(c->ref >= 1);
if (command == PA_COMMAND_ERROR) {
assert(t);
if (pa_tagstruct_getu32(t, &c->error) < 0) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return -1;
}
} else if (command == PA_COMMAND_TIMEOUT)
c->error = PA_ERR_TIMEOUT;
else {
pa_context_fail(c, PA_ERR_PROTOCOL);
return -1;
}
return 0;
}
static void setup_complete_callback(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_context *c = userdata;
assert(pd);
assert(c);
assert(c->state == PA_CONTEXT_AUTHORIZING || c->state == PA_CONTEXT_SETTING_NAME);
pa_context_ref(c);
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(c, command, t) < 0)
pa_context_fail(c, PA_ERR_PROTOCOL);
pa_context_fail(c, c->error);
goto finish;
}
switch(c->state) {
case PA_CONTEXT_AUTHORIZING: {
pa_tagstruct *reply;
if (pa_tagstruct_getu32(t, &c->version) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
goto finish;
}
/* Minimum supported version */
if (c->version < 8) {
pa_context_fail(c, PA_ERR_VERSION);
goto finish;
}
reply = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
pa_tagstruct_puts(reply, c->name);
pa_pstream_send_tagstruct(c->pstream, reply);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
pa_context_set_state(c, PA_CONTEXT_SETTING_NAME);
break;
}
case PA_CONTEXT_SETTING_NAME :
pa_context_set_state(c, PA_CONTEXT_READY);
break;
default:
assert(0);
}
finish:
pa_context_unref(c);
}
static void setup_context(pa_context *c, pa_iochannel *io) {
pa_tagstruct *t;
uint32_t tag;
assert(c);
assert(io);
pa_context_ref(c);
assert(!c->pstream);
c->pstream = pa_pstream_new(c->mainloop, io, c->memblock_stat);
pa_pstream_set_die_callback(c->pstream, pstream_die_callback, c);
pa_pstream_set_recieve_packet_callback(c->pstream, pstream_packet_callback, c);
pa_pstream_set_recieve_memblock_callback(c->pstream, pstream_memblock_callback, c);
assert(!c->pdispatch);
c->pdispatch = pa_pdispatch_new(c->mainloop, command_table, PA_COMMAND_MAX);
if (!c->conf->cookie_valid) {
pa_context_fail(c, PA_ERR_AUTHKEY);
goto finish;
}
t = pa_tagstruct_command(c, PA_COMMAND_AUTH, &tag);
pa_tagstruct_putu32(t, PA_PROTOCOL_VERSION);
pa_tagstruct_put_arbitrary(t, c->conf->cookie, sizeof(c->conf->cookie));
pa_pstream_send_tagstruct_with_creds(c->pstream, t, 1);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
pa_context_set_state(c, PA_CONTEXT_AUTHORIZING);
finish:
pa_context_unref(c);
}
static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata);
#ifndef OS_IS_WIN32
static int context_connect_spawn(pa_context *c) {
pid_t pid;
int status, r;
int fds[2] = { -1, -1} ;
pa_iochannel *io;
pa_context_ref(c);
if (socketpair(AF_UNIX, SOCK_STREAM, 0, fds) < 0) {
pa_log(__FILE__": socketpair() failed: %s", strerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
}
pa_fd_set_cloexec(fds[0], 1);
pa_socket_low_delay(fds[0]);
pa_socket_low_delay(fds[1]);
if (c->spawn_api.prefork)
c->spawn_api.prefork();
if ((pid = fork()) < 0) {
pa_log(__FILE__": fork() failed: %s", strerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
if (c->spawn_api.postfork)
c->spawn_api.postfork();
goto fail;
} else if (!pid) {
/* Child */
char t[128];
const char *state = NULL;
#define MAX_ARGS 64
const char * argv[MAX_ARGS+1];
int n;
/* Not required, since fds[0] has CLOEXEC enabled anyway */
close(fds[0]);
if (c->spawn_api.atfork)
c->spawn_api.atfork();
/* Setup argv */
n = 0;
argv[n++] = c->conf->daemon_binary;
argv[n++] = "--daemonize=yes";
snprintf(t, sizeof(t), "-Lmodule-native-protocol-fd fd=%i", fds[1]);
argv[n++] = strdup(t);
while (n < MAX_ARGS) {
char *a;
if (!(a = pa_split_spaces(c->conf->extra_arguments, &state)))
break;
argv[n++] = a;
}
argv[n++] = NULL;
execv(argv[0], (char * const *) argv);
_exit(1);
#undef MAX_ARGS
}
/* Parent */
r = waitpid(pid, &status, 0);
if (c->spawn_api.postfork)
c->spawn_api.postfork();
if (r < 0) {
pa_log(__FILE__": waitpid() failed: %s", strerror(errno));
pa_context_fail(c, PA_ERR_INTERNAL);
goto fail;
} else if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto fail;
}
close(fds[1]);
c->local = 1;
io = pa_iochannel_new(c->mainloop, fds[0], fds[0]);
setup_context(c, io);
unlock_autospawn_lock_file(c);
pa_context_unref(c);
return 0;
fail:
if (fds[0] != -1)
close(fds[0]);
if (fds[1] != -1)
close(fds[1]);
unlock_autospawn_lock_file(c);
pa_context_unref(c);
return -1;
}
#endif /* OS_IS_WIN32 */
static int try_next_connection(pa_context *c) {
char *u = NULL;
int r = -1;
assert(c);
assert(!c->client);
for (;;) {
pa_xfree(u);
u = NULL;
c->server_list = pa_strlist_pop(c->server_list, &u);
if (!u) {
#ifndef OS_IS_WIN32
if (c->do_autospawn) {
r = context_connect_spawn(c);
goto finish;
}
#endif
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto finish;
}
pa_log_debug(__FILE__": Trying to connect to %s...", u);
pa_xfree(c->server);
c->server = pa_xstrdup(u);
if (!(c->client = pa_socket_client_new_string(c->mainloop, u, PA_NATIVE_DEFAULT_PORT)))
continue;
c->local = pa_socket_client_is_local(c->client);
pa_socket_client_set_callback(c->client, on_connection, c);
break;
}
r = 0;
finish:
pa_xfree(u);
return r;
}
static void on_connection(pa_socket_client *client, pa_iochannel*io, void *userdata) {
pa_context *c = userdata;
assert(client);
assert(c);
assert(c->state == PA_CONTEXT_CONNECTING);
pa_context_ref(c);
pa_socket_client_unref(client);
c->client = NULL;
if (!io) {
/* Try the item in the list */
if (errno == ECONNREFUSED || errno == ETIMEDOUT || errno == EHOSTUNREACH) {
try_next_connection(c);
goto finish;
}
pa_context_fail(c, PA_ERR_CONNECTIONREFUSED);
goto finish;
}
unlock_autospawn_lock_file(c);
setup_context(c, io);
finish:
pa_context_unref(c);
}
int pa_context_connect(
pa_context *c,
const char *server,
pa_context_flags_t flags,
const pa_spawn_api *api) {
int r = -1;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY(c, c->state == PA_CONTEXT_UNCONNECTED, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY(c, !(flags & ~PA_CONTEXT_NOAUTOSPAWN), PA_ERR_INVALID);
PA_CHECK_VALIDITY(c, !server || *server, PA_ERR_INVALID);
if (!server)
server = c->conf->default_server;
pa_context_ref(c);
assert(!c->server_list);
if (server) {
if (!(c->server_list = pa_strlist_parse(server))) {
pa_context_fail(c, PA_ERR_INVALIDSERVER);
goto finish;
}
} else {
char *d;
char ufn[PATH_MAX];
/* Prepend in reverse order */
if ((d = getenv("DISPLAY"))) {
char *e;
d = pa_xstrdup(d);
if ((e = strchr(d, ':')))
*e = 0;
if (*d)
c->server_list = pa_strlist_prepend(c->server_list, d);
pa_xfree(d);
}
c->server_list = pa_strlist_prepend(c->server_list, "tcp6:localhost");
c->server_list = pa_strlist_prepend(c->server_list, "localhost");
c->server_list = pa_strlist_prepend(c->server_list, pa_runtime_path(PA_NATIVE_DEFAULT_UNIX_SOCKET, ufn, sizeof(ufn)));
/* Wrap the connection attempts in a single transaction for sane autospawn locking */
if (!(flags & PA_CONTEXT_NOAUTOSPAWN) && c->conf->autospawn) {
char lf[PATH_MAX];
pa_runtime_path(AUTOSPAWN_LOCK, lf, sizeof(lf));
pa_make_secure_parent_dir(lf);
assert(c->autospawn_lock_fd <= 0);
c->autospawn_lock_fd = pa_lock_lockfile(lf);
if (api)
c->spawn_api = *api;
c->do_autospawn = 1;
}
}
pa_context_set_state(c, PA_CONTEXT_CONNECTING);
r = try_next_connection(c);
finish:
pa_context_unref(c);
return r;
}
void pa_context_disconnect(pa_context *c) {
assert(c);
assert(c->ref >= 1);
pa_context_set_state(c, PA_CONTEXT_TERMINATED);
}
pa_context_state_t pa_context_get_state(pa_context *c) {
assert(c);
assert(c->ref >= 1);
return c->state;
}
int pa_context_errno(pa_context *c) {
assert(c);
assert(c->ref >= 1);
return c->error;
}
void pa_context_set_state_callback(pa_context *c, pa_context_notify_cb_t cb, void *userdata) {
assert(c);
assert(c->ref >= 1);
c->state_callback = cb;
c->state_userdata = userdata;
}
int pa_context_is_pending(pa_context *c) {
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY(c,
c->state == PA_CONTEXT_CONNECTING ||
c->state == PA_CONTEXT_AUTHORIZING ||
c->state == PA_CONTEXT_SETTING_NAME ||
c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
return (c->pstream && pa_pstream_is_pending(c->pstream)) ||
(c->pdispatch && pa_pdispatch_is_pending(c->pdispatch)) ||
c->client;
}
static void set_dispatch_callbacks(pa_operation *o);
static void pdispatch_drain_callback(PA_GCC_UNUSED pa_pdispatch*pd, void *userdata) {
set_dispatch_callbacks(userdata);
}
static void pstream_drain_callback(PA_GCC_UNUSED pa_pstream *s, void *userdata) {
set_dispatch_callbacks(userdata);
}
static void set_dispatch_callbacks(pa_operation *o) {
int done = 1;
assert(o);
assert(o->ref >= 1);
assert(o->context);
assert(o->context->ref >= 1);
assert(o->context->state == PA_CONTEXT_READY);
pa_pstream_set_drain_callback(o->context->pstream, NULL, NULL);
pa_pdispatch_set_drain_callback(o->context->pdispatch, NULL, NULL);
if (pa_pdispatch_is_pending(o->context->pdispatch)) {
pa_pdispatch_set_drain_callback(o->context->pdispatch, pdispatch_drain_callback, o);
done = 0;
}
if (pa_pstream_is_pending(o->context->pstream)) {
pa_pstream_set_drain_callback(o->context->pstream, pstream_drain_callback, o);
done = 0;
}
if (!done)
pa_operation_ref(o);
else {
if (o->callback) {
pa_context_notify_cb_t cb = (pa_context_notify_cb_t) o->callback;
cb(o->context, o->userdata);
}
pa_operation_done(o);
}
pa_operation_unref(o);
}
pa_operation* pa_context_drain(pa_context *c, pa_context_notify_cb_t cb, void *userdata) {
pa_operation *o;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, pa_context_is_pending(c), PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
set_dispatch_callbacks(pa_operation_ref(o));
return o;
}
void pa_context_simple_ack_callback(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_operation *o = userdata;
int success = 1;
assert(pd);
assert(o);
assert(o->ref >= 1);
assert(o->context);
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t) < 0)
goto finish;
success = 0;
} else if (!pa_tagstruct_eof(t)) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (o->callback) {
pa_context_success_cb_t cb = (pa_context_success_cb_t) o->callback;
cb(o->context, success, o->userdata);
}
finish:
pa_operation_done(o);
pa_operation_unref(o);
}
pa_operation* pa_context_exit_daemon(pa_context *c, pa_context_success_cb_t cb, void *userdata) {
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXIT, &tag);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o));
return o;
}
pa_operation* pa_context_send_simple_command(pa_context *c, uint32_t command, pa_pdispatch_cb_t internal_cb, pa_operation_cb_t cb, void *userdata) {
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, cb, userdata);
t = pa_tagstruct_command(c, command, &tag);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, internal_cb, pa_operation_ref(o));
return o;
}
pa_operation* pa_context_set_default_sink(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_SET_DEFAULT_SINK, &tag);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o));
return o;
}
pa_operation* pa_context_set_default_source(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
assert(c);
assert(c->ref >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_SET_DEFAULT_SOURCE, &tag);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o));
return o;
}
int pa_context_is_local(pa_context *c) {
assert(c);
return c->local;
}
pa_operation* pa_context_set_name(pa_context *c, const char *name, pa_context_success_cb_t cb, void *userdata) {
pa_tagstruct *t;
pa_operation *o;
uint32_t tag;
assert(c);
assert(c->ref >= 1);
assert(name);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_SET_CLIENT_NAME, &tag);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, pa_operation_ref(o));
return o;
}
const char* pa_get_library_version(void) {
return PACKAGE_VERSION;
}
const char* pa_context_get_server(pa_context *c) {
assert(c);
assert(c->ref >= 1);
if (!c->server)
return NULL;
if (*c->server == '{') {
char *e = strchr(c->server+1, '}');
return e ? e+1 : c->server;
}
return c->server;
}
uint32_t pa_context_get_protocol_version(PA_GCC_UNUSED pa_context *c) {
return PA_PROTOCOL_VERSION;
}
uint32_t pa_context_get_server_protocol_version(pa_context *c) {
assert(c);
assert(c->ref >= 1);
return c->version;
}
pa_tagstruct *pa_tagstruct_command(pa_context *c, uint32_t command, uint32_t *tag) {
pa_tagstruct *t;
assert(c);
assert(tag);
t = pa_tagstruct_new(NULL, 0);
pa_tagstruct_putu32(t, command);
pa_tagstruct_putu32(t, *tag = c->ctag++);
return t;
}
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