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pulseaudio/polyp/polyplib.c
Lennart Poettering 37d930ac4a glib mainloop fix 
implement server status command
support for sink_list/source_list in polyplib


git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@110 fefdeb5f-60dc-0310-8127-8f9354f1896f
2004-08-10 13:00:12 +00:00

1303 lines
40 KiB
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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 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 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 <sys/socket.h>
#include <netdb.h>
#include "polyplib.h"
#include "native-common.h"
#include "pdispatch.h"
#include "pstream.h"
#include "dynarray.h"
#include "socket-client.h"
#include "pstream-util.h"
#include "authkey.h"
#include "util.h"
#include "xmalloc.h"
#define DEFAULT_MAXLENGTH 204800
#define DEFAULT_TLENGTH 10240
#define DEFAULT_PREBUF 4096
#define DEFAULT_MINREQ 1024
#define DEFAULT_FRAGSIZE 1024
#define DEFAULT_TIMEOUT (5*60)
#define DEFAULT_SERVER "/tmp/polypaudio/native"
#define DEFAULT_PORT "4713"
struct pa_context {
char *name;
struct pa_mainloop_api* mainloop;
struct pa_socket_client *client;
struct pa_pstream *pstream;
struct pa_pdispatch *pdispatch;
struct pa_dynarray *record_streams, *playback_streams;
struct pa_stream *first_stream;
uint32_t ctag;
uint32_t error;
enum {
CONTEXT_UNCONNECTED,
CONTEXT_CONNECTING,
CONTEXT_AUTHORIZING,
CONTEXT_SETTING_NAME,
CONTEXT_READY,
CONTEXT_DEAD
} state;
void (*connect_complete_callback)(struct pa_context*c, int success, void *userdata);
void *connect_complete_userdata;
void (*drain_complete_callback)(struct pa_context*c, void *userdata);
void *drain_complete_userdata;
void (*die_callback)(struct pa_context*c, void *userdata);
void *die_userdata;
void (*stat_callback)(struct pa_context*c, uint32_t count, uint32_t total, void *userdata);
void *stat_userdata;
void (*play_sample_callback)(struct pa_context*c, int success, void *userdata);
void *play_sample_userdata;
void (*remove_sample_callback)(struct pa_context*c, int success, void *userdata);
void *remove_sample_userdata;
void (*get_server_info_callback)(struct pa_context*c, const struct pa_server_info* i, void *userdata);
void *get_server_info_userdata;
void (*get_sink_info_callback)(struct pa_context*c, const struct pa_sink_info* i, int is_last, void *userdata);
void *get_sink_info_userdata;
void (*get_source_info_callback)(struct pa_context*c, const struct pa_source_info* i, int is_last, void *userdata);
void *get_source_info_userdata;
uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
};
struct pa_stream {
struct pa_context *context;
struct pa_stream *next, *previous;
char *name;
struct pa_buffer_attr buffer_attr;
struct pa_sample_spec sample_spec;
uint32_t channel;
int channel_valid;
uint32_t device_index;
enum pa_stream_direction direction;
enum { STREAM_CREATING, STREAM_READY, STREAM_DEAD} state;
uint32_t requested_bytes;
void (*read_callback)(struct pa_stream *p, const void*data, size_t length, void *userdata);
void *read_userdata;
void (*write_callback)(struct pa_stream *p, size_t length, void *userdata);
void *write_userdata;
void (*create_complete_callback)(struct pa_stream *s, int success, void *userdata);
void *create_complete_userdata;
void (*drain_complete_callback)(struct pa_stream *s, void *userdata);
void *drain_complete_userdata;
void (*die_callback)(struct pa_stream*c, void *userdata);
void *die_userdata;
void (*get_latency_callback)(struct pa_stream*c, uint32_t latency, void *userdata);
void *get_latency_userdata;
void (*finish_sample_callback)(struct pa_stream*c, int success, void *userdata);
void *finish_sample_userdata;
};
static void command_request(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static void command_playback_stream_killed(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata);
static const struct pa_pdispatch_command command_table[PA_COMMAND_MAX] = {
[PA_COMMAND_ERROR] = { NULL },
[PA_COMMAND_REPLY] = { NULL },
[PA_COMMAND_CREATE_PLAYBACK_STREAM] = { NULL },
[PA_COMMAND_DELETE_PLAYBACK_STREAM] = { NULL },
[PA_COMMAND_CREATE_RECORD_STREAM] = { NULL },
[PA_COMMAND_DELETE_RECORD_STREAM] = { NULL },
[PA_COMMAND_EXIT] = { NULL },
[PA_COMMAND_REQUEST] = { command_request },
[PA_COMMAND_PLAYBACK_STREAM_KILLED] = { command_playback_stream_killed },
[PA_COMMAND_RECORD_STREAM_KILLED] = { command_playback_stream_killed },
};
struct pa_context *pa_context_new(struct pa_mainloop_api *mainloop, const char *name) {
struct pa_context *c;
assert(mainloop && name);
c = pa_xmalloc(sizeof(struct pa_context));
c->name = pa_xstrdup(name);
c->mainloop = mainloop;
c->client = NULL;
c->pstream = NULL;
c->pdispatch = NULL;
c->playback_streams = pa_dynarray_new();
assert(c->playback_streams);
c->record_streams = pa_dynarray_new();
assert(c->record_streams);
c->first_stream = NULL;
c->error = PA_ERROR_OK;
c->state = CONTEXT_UNCONNECTED;
c->ctag = 0;
c->connect_complete_callback = NULL;
c->connect_complete_userdata = NULL;
c->drain_complete_callback = NULL;
c->drain_complete_userdata = NULL;
c->die_callback = NULL;
c->die_userdata = NULL;
c->stat_callback = NULL;
c->stat_userdata = NULL;
c->play_sample_callback = NULL;
c->play_sample_userdata = NULL;
c->remove_sample_callback = NULL;
c->remove_sample_userdata = NULL;
c->get_server_info_callback = NULL;
c->get_server_info_userdata = NULL;
c->get_sink_info_callback = NULL;
c->get_sink_info_userdata = NULL;
c->get_source_info_callback = NULL;
c->get_source_info_userdata = NULL;
pa_check_for_sigpipe();
return c;
}
void pa_context_free(struct pa_context *c) {
assert(c);
while (c->first_stream)
pa_stream_free(c->first_stream);
if (c->client)
pa_socket_client_free(c->client);
if (c->pdispatch)
pa_pdispatch_free(c->pdispatch);
if (c->pstream)
pa_pstream_free(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_xfree(c->name);
pa_xfree(c);
}
static void stream_dead(struct pa_stream *s) {
assert(s);
if (s->state == STREAM_DEAD)
return;
if (s->state == STREAM_READY) {
s->state = STREAM_DEAD;
if (s->die_callback)
s->die_callback(s, s->die_userdata);
} else
s->state = STREAM_DEAD;
}
static void context_dead(struct pa_context *c) {
struct pa_stream *s;
assert(c);
if (c->state == CONTEXT_DEAD)
return;
if (c->pdispatch)
pa_pdispatch_free(c->pdispatch);
c->pdispatch = NULL;
if (c->pstream)
pa_pstream_free(c->pstream);
c->pstream = NULL;
if (c->client)
pa_socket_client_free(c->client);
c->client = NULL;
for (s = c->first_stream; s; s = s->next)
stream_dead(s);
if (c->state == CONTEXT_READY) {
c->state = CONTEXT_DEAD;
if (c->die_callback)
c->die_callback(c, c->die_userdata);
} else
c->state = CONTEXT_DEAD;
}
static void pstream_die_callback(struct pa_pstream *p, void *userdata) {
struct pa_context *c = userdata;
assert(p && c);
c->error = PA_ERROR_CONNECTIONTERMINATED;
context_dead(c);
}
static void pstream_packet_callback(struct pa_pstream *p, struct pa_packet *packet, void *userdata) {
struct pa_context *c = userdata;
assert(p && packet && c);
if (pa_pdispatch_run(c->pdispatch, packet, c) < 0) {
fprintf(stderr, "polyp.c: invalid packet.\n");
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
}
}
static void pstream_memblock_callback(struct pa_pstream *p, uint32_t channel, int32_t delta, const struct pa_memchunk *chunk, void *userdata) {
struct pa_context *c = userdata;
struct pa_stream *s;
assert(p && chunk && c && chunk->memblock && chunk->memblock->data);
if (!(s = pa_dynarray_get(c->record_streams, channel)))
return;
if (s->read_callback)
s->read_callback(s, chunk->memblock->data + chunk->index, chunk->length, s->read_userdata);
}
static int handle_error(struct pa_context *c, uint32_t command, struct pa_tagstruct *t) {
assert(c && t);
if (command == PA_COMMAND_ERROR) {
if (pa_tagstruct_getu32(t, &c->error) < 0) {
c->error = PA_ERROR_PROTOCOL;
return -1;
}
return 0;
}
c->error = (command == PA_COMMAND_TIMEOUT) ? PA_ERROR_TIMEOUT : PA_ERROR_INTERNAL;
return -1;
}
static void setup_complete_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
assert(pd && c && (c->state == CONTEXT_AUTHORIZING || c->state == CONTEXT_SETTING_NAME));
if (command != PA_COMMAND_REPLY) {
handle_error(c, command, t);
context_dead(c);
if (c->connect_complete_callback)
c->connect_complete_callback(c, 0, c->connect_complete_userdata);
return;
}
if (c->state == CONTEXT_AUTHORIZING) {
struct pa_tagstruct *t;
c->state = CONTEXT_SETTING_NAME;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_SET_NAME);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_tagstruct_puts(t, c->name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
} else {
assert(c->state == CONTEXT_SETTING_NAME);
c->state = CONTEXT_READY;
if (c->connect_complete_callback)
c->connect_complete_callback(c, 1, c->connect_complete_userdata);
}
return;
}
static void on_connection(struct pa_socket_client *client, struct pa_iochannel*io, void *userdata) {
struct pa_context *c = userdata;
struct pa_tagstruct *t;
uint32_t tag;
assert(client && c && c->state == CONTEXT_CONNECTING);
pa_socket_client_free(client);
c->client = NULL;
if (!io) {
c->error = PA_ERROR_CONNECTIONREFUSED;
context_dead(c);
if (c->connect_complete_callback)
c->connect_complete_callback(c, 0, c->connect_complete_userdata);
return;
}
c->pstream = pa_pstream_new(c->mainloop, io);
assert(c->pstream);
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);
c->pdispatch = pa_pdispatch_new(c->mainloop, command_table, PA_COMMAND_MAX);
assert(c->pdispatch);
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_AUTH);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_tagstruct_put_arbitrary(t, c->auth_cookie, sizeof(c->auth_cookie));
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, setup_complete_callback, c);
c->state = CONTEXT_AUTHORIZING;
}
static struct sockaddr *resolve_server(const char *server, size_t *len) {
struct sockaddr *sa;
struct addrinfo hints, *result = NULL;
char *port;
assert(server && len);
if ((port = strrchr(server, ':')))
port++;
if (!port)
port = DEFAULT_PORT;
memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = 0;
if (getaddrinfo(server, port, &hints, &result) != 0)
return NULL;
assert(result);
sa = pa_xmalloc(*len = result->ai_addrlen);
memcpy(sa, result->ai_addr, *len);
freeaddrinfo(result);
return sa;
}
int pa_context_connect(struct pa_context *c, const char *server, void (*complete) (struct pa_context*c, int success, void *userdata), void *userdata) {
assert(c && c->state == CONTEXT_UNCONNECTED);
if (pa_authkey_load_from_home(PA_NATIVE_COOKIE_FILE, c->auth_cookie, sizeof(c->auth_cookie)) < 0) {
c->error = PA_ERROR_AUTHKEY;
return -1;
}
if (!server)
if (!(server = getenv("POLYP_SERVER")))
server = DEFAULT_SERVER;
assert(!c->client);
if (*server == '/') {
if (!(c->client = pa_socket_client_new_unix(c->mainloop, server))) {
c->error = PA_ERROR_CONNECTIONREFUSED;
return -1;
}
} else {
struct sockaddr* sa;
size_t sa_len;
if (!(sa = resolve_server(server, &sa_len))) {
c->error = PA_ERROR_INVALIDSERVER;
return -1;
}
c->client = pa_socket_client_new_sockaddr(c->mainloop, sa, sa_len);
pa_xfree(sa);
if (!c->client) {
c->error = PA_ERROR_CONNECTIONREFUSED;
return -1;
}
}
c->connect_complete_callback = complete;
c->connect_complete_userdata = userdata;
pa_socket_client_set_callback(c->client, on_connection, c);
c->state = CONTEXT_CONNECTING;
return 0;
}
int pa_context_is_dead(struct pa_context *c) {
assert(c);
return c->state == CONTEXT_DEAD;
}
int pa_context_is_ready(struct pa_context *c) {
assert(c);
return c->state == CONTEXT_READY;
}
int pa_context_errno(struct pa_context *c) {
assert(c);
return c->error;
}
void pa_context_set_die_callback(struct pa_context *c, void (*cb)(struct pa_context *c, void *userdata), void *userdata) {
assert(c);
c->die_callback = cb;
c->die_userdata = userdata;
}
static void command_playback_stream_killed(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
struct pa_stream *s;
uint32_t channel;
assert(pd && (command == PA_COMMAND_PLAYBACK_STREAM_KILLED || command == PA_COMMAND_RECORD_STREAM_KILLED) && t && c);
if (pa_tagstruct_getu32(t, &channel) < 0 ||
!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (!(s = pa_dynarray_get(command == PA_COMMAND_PLAYBACK_STREAM_KILLED ? c->playback_streams : c->record_streams, channel)))
return;
c->error = PA_ERROR_KILLED;
stream_dead(s);
}
static void command_request(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_stream *s;
struct pa_context *c = userdata;
uint32_t bytes, channel;
assert(pd && command == PA_COMMAND_REQUEST && t && c);
if (pa_tagstruct_getu32(t, &channel) < 0 ||
pa_tagstruct_getu32(t, &bytes) < 0 ||
!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (!(s = pa_dynarray_get(c->playback_streams, channel)))
return;
if (s->state != STREAM_READY)
return;
s->requested_bytes += bytes;
if (s->requested_bytes && s->write_callback)
s->write_callback(s, s->requested_bytes, s->write_userdata);
}
static void create_stream_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_stream *s = userdata;
assert(pd && s && s->state == STREAM_CREATING);
if (command != PA_COMMAND_REPLY) {
if (handle_error(s->context, command, t) < 0) {
context_dead(s->context);
return;
}
stream_dead(s);
if (s->create_complete_callback)
s->create_complete_callback(s, 0, s->create_complete_userdata);
return;
}
if (pa_tagstruct_getu32(t, &s->channel) < 0 ||
((s->direction != PA_STREAM_UPLOAD) && pa_tagstruct_getu32(t, &s->device_index) < 0) ||
!pa_tagstruct_eof(t)) {
s->context->error = PA_ERROR_PROTOCOL;
context_dead(s->context);
return;
}
s->channel_valid = 1;
pa_dynarray_put((s->direction == PA_STREAM_RECORD) ? s->context->record_streams : s->context->playback_streams, s->channel, s);
s->state = STREAM_READY;
if (s->create_complete_callback)
s->create_complete_callback(s, 1, s->create_complete_userdata);
}
static void create_stream(struct pa_stream *s, const char *dev) {
struct pa_tagstruct *t;
uint32_t tag;
assert(s);
s->state = STREAM_CREATING;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_CREATE_PLAYBACK_STREAM : PA_COMMAND_CREATE_RECORD_STREAM);
pa_tagstruct_putu32(t, tag = s->context->ctag++);
pa_tagstruct_puts(t, s->name);
pa_tagstruct_put_sample_spec(t, &s->sample_spec);
pa_tagstruct_putu32(t, (uint32_t) -1);
pa_tagstruct_puts(t, dev ? dev : "");
pa_tagstruct_putu32(t, s->buffer_attr.maxlength);
if (s->direction == PA_STREAM_PLAYBACK) {
pa_tagstruct_putu32(t, s->buffer_attr.tlength);
pa_tagstruct_putu32(t, s->buffer_attr.prebuf);
pa_tagstruct_putu32(t, s->buffer_attr.minreq);
} else
pa_tagstruct_putu32(t, s->buffer_attr.fragsize);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, create_stream_callback, s);
}
static struct pa_stream *internal_stream_new(struct pa_context *c) {
struct pa_stream *s;
s = pa_xmalloc(sizeof(struct pa_stream));
s->context = c;
s->read_callback = NULL;
s->read_userdata = NULL;
s->write_callback = NULL;
s->write_userdata = NULL;
s->die_callback = NULL;
s->die_userdata = NULL;
s->create_complete_callback = NULL;
s->create_complete_userdata = NULL;
s->get_latency_callback = NULL;
s->get_latency_userdata = NULL;
s->finish_sample_callback = NULL;
s->finish_sample_userdata = NULL;
s->name = NULL;
s->state = STREAM_CREATING;
s->requested_bytes = 0;
s->channel = 0;
s->channel_valid = 0;
s->device_index = (uint32_t) -1;
memset(&s->buffer_attr, 0, sizeof(s->buffer_attr));
s->next = c->first_stream;
if (s->next)
s->next->previous = s;
s->previous = NULL;
c->first_stream = s;
return s;
}
struct pa_stream* pa_stream_new(
struct pa_context *c,
enum pa_stream_direction dir,
const char *dev,
const char *name,
const struct pa_sample_spec *ss,
const struct pa_buffer_attr *attr,
void (*complete) (struct pa_stream*s, int success, void *userdata),
void *userdata) {
struct pa_stream *s;
assert(c && name && ss && c->state == CONTEXT_READY && (dir == PA_STREAM_PLAYBACK || dir == PA_STREAM_RECORD));
s = internal_stream_new(c);
assert(s);
s->create_complete_callback = complete;
s->create_complete_userdata = userdata;
s->name = pa_xstrdup(name);
s->state = STREAM_CREATING;
s->direction = dir;
s->sample_spec = *ss;
if (attr)
s->buffer_attr = *attr;
else {
s->buffer_attr.maxlength = DEFAULT_MAXLENGTH;
s->buffer_attr.tlength = DEFAULT_TLENGTH;
s->buffer_attr.prebuf = DEFAULT_PREBUF;
s->buffer_attr.minreq = DEFAULT_MINREQ;
s->buffer_attr.fragsize = DEFAULT_FRAGSIZE;
}
create_stream(s, dev);
return s;
}
void pa_stream_free(struct pa_stream *s) {
assert(s && s->context);
if (s->context->pdispatch)
pa_pdispatch_unregister_reply(s->context->pdispatch, s);
pa_xfree(s->name);
if (s->channel_valid && s->context->state == CONTEXT_READY) {
struct pa_tagstruct *t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, s->direction == PA_STREAM_PLAYBACK ? PA_COMMAND_DELETE_PLAYBACK_STREAM :
(s->direction == PA_STREAM_RECORD ? PA_COMMAND_DELETE_RECORD_STREAM : PA_COMMAND_DELETE_UPLOAD_STREAM));
pa_tagstruct_putu32(t, s->context->ctag++);
pa_tagstruct_putu32(t, s->channel);
pa_pstream_send_tagstruct(s->context->pstream, t);
}
if (s->channel_valid)
pa_dynarray_put((s->direction == PA_STREAM_PLAYBACK) ? s->context->playback_streams : s->context->record_streams, s->channel, NULL);
if (s->next)
s->next->previous = s->previous;
if (s->previous)
s->previous->next = s->next;
else
s->context->first_stream = s->next;
pa_xfree(s);
}
void pa_stream_set_write_callback(struct pa_stream *s, void (*cb)(struct pa_stream *p, size_t length, void *userdata), void *userdata) {
s->write_callback = cb;
s->write_userdata = userdata;
}
void pa_stream_write(struct pa_stream *s, const void *data, size_t length) {
struct pa_memchunk chunk;
assert(s && s->context && data && length && s->state == STREAM_READY);
chunk.memblock = pa_memblock_new(length);
assert(chunk.memblock && chunk.memblock->data);
memcpy(chunk.memblock->data, data, length);
chunk.index = 0;
chunk.length = length;
pa_pstream_send_memblock(s->context->pstream, s->channel, 0, &chunk);
pa_memblock_unref(chunk.memblock);
/*fprintf(stderr, "Sent %u bytes\n", length);*/
if (length < s->requested_bytes)
s->requested_bytes -= length;
else
s->requested_bytes = 0;
}
size_t pa_stream_writable_size(struct pa_stream *s) {
assert(s && s->state == STREAM_READY);
return s->requested_bytes;
}
void pa_stream_set_read_callback(struct pa_stream *s, void (*cb)(struct pa_stream *p, const void*data, size_t length, void *userdata), void *userdata) {
assert(s && cb);
s->read_callback = cb;
s->read_userdata = userdata;
}
int pa_stream_is_dead(struct pa_stream *s) {
return s->state == STREAM_DEAD;
}
int pa_stream_is_ready(struct pa_stream*s) {
return s->state == STREAM_READY;
}
void pa_stream_set_die_callback(struct pa_stream *s, void (*cb)(struct pa_stream *s, void *userdata), void *userdata) {
assert(s);
s->die_callback = cb;
s->die_userdata = userdata;
}
int pa_context_is_pending(struct pa_context *c) {
assert(c);
if (c->state != CONTEXT_READY)
return 0;
return pa_pstream_is_pending(c->pstream) || pa_pdispatch_is_pending(c->pdispatch);
}
struct pa_context* pa_stream_get_context(struct pa_stream *p) {
assert(p);
return p->context;
}
static void set_dispatch_callbacks(struct pa_context *c);
static void pdispatch_drain_callback(struct pa_pdispatch*pd, void *userdata) {
set_dispatch_callbacks(userdata);
}
static void pstream_drain_callback(struct pa_pstream *s, void *userdata) {
set_dispatch_callbacks(userdata);
}
static void set_dispatch_callbacks(struct pa_context *c) {
assert(c && c->state == CONTEXT_READY);
pa_pstream_set_drain_callback(c->pstream, NULL, NULL);
pa_pdispatch_set_drain_callback(c->pdispatch, NULL, NULL);
if (pa_pdispatch_is_pending(c->pdispatch)) {
pa_pdispatch_set_drain_callback(c->pdispatch, pdispatch_drain_callback, c);
return;
}
if (pa_pstream_is_pending(c->pstream)) {
pa_pstream_set_drain_callback(c->pstream, pstream_drain_callback, c);
return;
}
assert(c->drain_complete_callback);
c->drain_complete_callback(c, c->drain_complete_userdata);
}
int pa_context_drain(
struct pa_context *c,
void (*complete) (struct pa_context*c, void *userdata),
void *userdata) {
assert(c && c->state == CONTEXT_READY);
if (complete == NULL) {
c->drain_complete_callback = NULL;
pa_pstream_set_drain_callback(c->pstream, NULL, NULL);
pa_pdispatch_set_drain_callback(c->pdispatch, NULL, NULL);
return 0;
}
if (!pa_context_is_pending(c))
return -1;
c->drain_complete_callback = complete;
c->drain_complete_userdata = userdata;
set_dispatch_callbacks(c);
return 0;
}
static void stream_drain_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_stream *s = userdata;
assert(pd && s);
if (command != PA_COMMAND_REPLY) {
if (handle_error(s->context, command, t) < 0) {
context_dead(s->context);
return;
}
stream_dead(s);
return;
}
if (s->state != STREAM_READY)
return;
if (!pa_tagstruct_eof(t)) {
s->context->error = PA_ERROR_PROTOCOL;
context_dead(s->context);
return;
}
if (s->drain_complete_callback) {
void (*temp) (struct pa_stream*s, void *userdata) = s->drain_complete_callback;
s->drain_complete_callback = NULL;
temp(s, s->drain_complete_userdata);
}
}
void pa_stream_drain(struct pa_stream *s, void (*complete) (struct pa_stream*s, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(s && s->state == STREAM_READY);
if (!complete) {
s->drain_complete_callback = NULL;
return;
}
s->drain_complete_callback = complete;
s->drain_complete_userdata = userdata;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_DRAIN_PLAYBACK_STREAM);
pa_tagstruct_putu32(t, tag = s->context->ctag++);
pa_tagstruct_putu32(t, s->channel);
pa_pstream_send_tagstruct(s->context->pstream, t);
pa_pdispatch_register_reply(s->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_drain_callback, s);
}
void pa_context_exit(struct pa_context *c) {
struct pa_tagstruct *t;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_EXIT);
pa_tagstruct_putu32(t, c->ctag++);
pa_pstream_send_tagstruct(c->pstream, t);
}
static void context_stat_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
uint32_t total, count;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->stat_callback)
c->stat_callback(c, (uint32_t) -1, (uint32_t) -1, c->stat_userdata);
return;
}
if (pa_tagstruct_getu32(t, &count) < 0 ||
pa_tagstruct_getu32(t, &total) < 0 ||
!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->stat_callback)
c->stat_callback(c, count, total, c->stat_userdata);
}
void pa_context_stat(struct pa_context *c, void (*cb)(struct pa_context *c, uint32_t count, uint32_t total, void *userdata), void *userdata) {
uint32_t tag;
struct pa_tagstruct *t;
c->stat_callback = cb;
c->stat_userdata = userdata;
if (cb == NULL)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_STAT);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_stat_callback, c);
}
static void stream_get_latency_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_stream *s = userdata;
uint32_t latency;
assert(pd && s);
if (command != PA_COMMAND_REPLY) {
if (handle_error(s->context, command, t) < 0) {
context_dead(s->context);
return;
}
if (s->get_latency_callback)
s->get_latency_callback(s, (uint32_t) -1, s->get_latency_userdata);
return;
}
if (pa_tagstruct_getu32(t, &latency) < 0 ||
!pa_tagstruct_eof(t)) {
s->context->error = PA_ERROR_PROTOCOL;
context_dead(s->context);
return;
}
if (s->get_latency_callback)
s->get_latency_callback(s, latency, s->get_latency_userdata);
}
void pa_stream_get_latency(struct pa_stream *p, void (*cb)(struct pa_stream *p, uint32_t latency, void *userdata), void *userdata) {
uint32_t tag;
struct pa_tagstruct *t;
p->get_latency_callback = cb;
p->get_latency_userdata = userdata;
if (cb == NULL)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_GET_PLAYBACK_LATENCY);
pa_tagstruct_putu32(t, tag = p->context->ctag++);
pa_tagstruct_putu32(t, p->channel);
pa_pstream_send_tagstruct(p->context->pstream, t);
pa_pdispatch_register_reply(p->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_get_latency_callback, p);
}
struct pa_stream* pa_context_upload_sample(struct pa_context *c, const char *name, const struct pa_sample_spec *ss, size_t length, void (*cb) (struct pa_stream*s, int success, void *userdata), void *userdata) {
struct pa_stream *s;
struct pa_tagstruct *t;
uint32_t tag;
s = internal_stream_new(c);
assert(s);
s->create_complete_callback = cb;
s->create_complete_userdata = userdata;
s->name = pa_xstrdup(name);
s->state = STREAM_CREATING;
s->direction = PA_STREAM_UPLOAD;
s->sample_spec = *ss;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_CREATE_UPLOAD_STREAM);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_tagstruct_puts(t, name);
pa_tagstruct_put_sample_spec(t, ss);
pa_tagstruct_putu32(t, length);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, create_stream_callback, s);
return s;
}
static void stream_finish_sample_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_stream *s = userdata;
assert(pd && s);
if (command != PA_COMMAND_REPLY) {
if (handle_error(s->context, command, t) < 0) {
context_dead(s->context);
return;
}
if (s->finish_sample_callback)
s->finish_sample_callback(s, 0, s->finish_sample_userdata);
return;
}
if (!pa_tagstruct_eof(t)) {
s->context->error = PA_ERROR_PROTOCOL;
context_dead(s->context);
return;
}
if (s->finish_sample_callback)
s->finish_sample_callback(s, 1, s->finish_sample_userdata);
}
void pa_stream_finish_sample(struct pa_stream *p, void (*cb)(struct pa_stream*s, int success, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(p);
p->finish_sample_callback = cb;
p->finish_sample_userdata = userdata;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_FINISH_UPLOAD_STREAM);
pa_tagstruct_putu32(t, tag = p->context->ctag++);
pa_tagstruct_putu32(t, p->channel);
pa_pstream_send_tagstruct(p->context->pstream, t);
pa_pdispatch_register_reply(p->context->pdispatch, tag, DEFAULT_TIMEOUT, stream_finish_sample_callback, p);
}
static void context_play_sample_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->play_sample_callback)
c->play_sample_callback(c, 0, c->play_sample_userdata);
return;
}
if (!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->play_sample_callback)
c->play_sample_callback(c, 1, c->play_sample_userdata);
}
void pa_context_play_sample(struct pa_context *c, const char *name, const char *dev, uint32_t volume, void (*cb)(struct pa_context *c, int success, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(c && name && *name && (!dev || *dev));
c->play_sample_callback = cb;
c->play_sample_userdata = userdata;
if (!cb)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_PLAY_SAMPLE);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_tagstruct_putu32(t, (uint32_t) -1);
pa_tagstruct_puts(t, dev ? dev : "");
pa_tagstruct_putu32(t, volume);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_play_sample_callback, c);
}
static void context_remove_sample_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->remove_sample_callback)
c->remove_sample_callback(c, 0, c->remove_sample_userdata);
return;
}
if (!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->remove_sample_callback)
c->remove_sample_callback(c, 1, c->remove_sample_userdata);
}
void pa_context_remove_sample(struct pa_context *c, const char *name, void (*cb)(struct pa_context *c, int success, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(c && name);
c->remove_sample_callback = cb;
c->remove_sample_userdata = userdata;
if (!cb)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_REMOVE_SAMPLE);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_tagstruct_puts(t, name);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_remove_sample_callback, c);
}
static void context_get_server_info_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
struct pa_server_info i;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->get_server_info_callback)
c->get_server_info_callback(c, NULL, c->get_server_info_userdata);
return;
}
if (pa_tagstruct_gets(t, &i.server_name) < 0 ||
pa_tagstruct_gets(t, &i.server_version) < 0 ||
pa_tagstruct_gets(t, &i.user_name) < 0 ||
pa_tagstruct_gets(t, &i.host_name) < 0 ||
pa_tagstruct_get_sample_spec(t, &i.sample_spec) < 0 ||
!pa_tagstruct_eof(t)) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->get_server_info_callback)
c->get_server_info_callback(c, &i, c->get_server_info_userdata);
}
void pa_context_get_server_info(struct pa_context *c, void (*cb)(struct pa_context *c, const struct pa_server_info*i, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(c);
c->get_server_info_callback = cb;
c->get_server_info_userdata = userdata;
if (!cb)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_GET_SERVER_INFO);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_get_server_info_callback, c);
}
static void context_get_sink_info_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->get_sink_info_callback)
c->get_sink_info_callback(c, NULL, 0, c->get_sink_info_userdata);
return;
}
while (!pa_tagstruct_eof(t)) {
struct pa_sink_info i;
if (pa_tagstruct_getu32(t, &i.index) < 0 ||
pa_tagstruct_gets(t, &i.name) < 0 ||
pa_tagstruct_gets(t, &i.description) < 0 ||
pa_tagstruct_get_sample_spec(t, &i.sample_spec) < 0 ||
pa_tagstruct_getu32(t, &i.owner_module) < 0 ||
pa_tagstruct_getu32(t, &i.volume) < 0 ||
pa_tagstruct_getu32(t, &i.monitor_source) < 0 ||
pa_tagstruct_gets(t, &i.monitor_source_name) < 0 ||
pa_tagstruct_getu32(t, &i.latency) < 0) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->get_sink_info_callback)
c->get_sink_info_callback(c, &i, 0, c->get_sink_info_userdata);
}
if (c->get_sink_info_callback)
c->get_sink_info_callback(c, NULL, 1, c->get_sink_info_userdata);
}
void pa_context_get_sink_info_list(struct pa_context *c, void (*cb)(struct pa_context *c, const struct pa_sink_info *i, int is_last, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(c);
c->get_sink_info_callback = cb;
c->get_sink_info_userdata = userdata;
if (!cb)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_GET_SINK_INFO_LIST);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_get_sink_info_callback, c);
}
static void context_get_source_info_callback(struct pa_pdispatch *pd, uint32_t command, uint32_t tag, struct pa_tagstruct *t, void *userdata) {
struct pa_context *c = userdata;
assert(pd && c);
if (command != PA_COMMAND_REPLY) {
if (handle_error(c, command, t) < 0) {
context_dead(c);
return;
}
if (c->get_source_info_callback)
c->get_source_info_callback(c, NULL, 0, c->get_source_info_userdata);
return;
}
while (!pa_tagstruct_eof(t)) {
struct pa_source_info i;
if (pa_tagstruct_getu32(t, &i.index) < 0 ||
pa_tagstruct_gets(t, &i.name) < 0 ||
pa_tagstruct_gets(t, &i.description) < 0 ||
pa_tagstruct_get_sample_spec(t, &i.sample_spec) < 0 ||
pa_tagstruct_getu32(t, &i.owner_module) < 0 ||
pa_tagstruct_getu32(t, &i.monitor_of_sink) < 0 ||
pa_tagstruct_gets(t, &i.monitor_of_sink_name) < 0) {
c->error = PA_ERROR_PROTOCOL;
context_dead(c);
return;
}
if (c->get_source_info_callback)
c->get_source_info_callback(c, &i, 0, c->get_source_info_userdata);
}
if (c->get_source_info_callback)
c->get_source_info_callback(c, NULL, 1, c->get_source_info_userdata);
}
void pa_context_get_source_info_list(struct pa_context *c, void (*cb)(struct pa_context *c, const struct pa_source_info *i, int is_last, void *userdata), void *userdata) {
struct pa_tagstruct *t;
uint32_t tag;
assert(c);
c->get_source_info_callback = cb;
c->get_source_info_userdata = userdata;
if (!cb)
return;
t = pa_tagstruct_new(NULL, 0);
assert(t);
pa_tagstruct_putu32(t, PA_COMMAND_GET_SOURCE_INFO_LIST);
pa_tagstruct_putu32(t, tag = c->ctag++);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, context_get_source_info_callback, c);
}
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