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/***
This file is part of PulseAudio.
Copyright 2008 Lennart Poettering
Copyright 2011 Colin Guthrie
PulseAudio 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 2.1 of the License,
or (at your option) any later version.
PulseAudio 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 PulseAudio; if not, see <http://www.gnu.org/licenses/>.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <pulse/context.h>
#include <pulse/gccmacro.h>
#include <pulse/xmalloc.h>
#include <pulse/fork-detect.h>
#include <pulse/operation.h>
#include <pulse/format.h>
#include <pulsecore/macro.h>
#include <pulsecore/pstream-util.h>
#include "internal.h"
#include "ext-device-restore.h"
/* Protocol extension commands */
enum {
SUBCOMMAND_TEST,
SUBCOMMAND_SUBSCRIBE,
SUBCOMMAND_EVENT,
SUBCOMMAND_READ_FORMATS_ALL,
SUBCOMMAND_READ_FORMATS,
SUBCOMMAND_SAVE_FORMATS
};
static void ext_device_restore_test_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_operation *o = userdata;
uint32_t version = PA_INVALID_INDEX;
pa_assert(pd);
pa_assert(o);
pa_assert(PA_REFCNT_VALUE(o) >= 1);
if (!o->context)
goto finish;
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t, false) < 0)
goto finish;
} else if (pa_tagstruct_getu32(t, &version) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (o->callback) {
pa_ext_device_restore_test_cb_t cb = (pa_ext_device_restore_test_cb_t) o->callback;
cb(o->context, version, o->userdata);
}
finish:
pa_operation_done(o);
pa_operation_unref(o);
}
pa_operation *pa_ext_device_restore_test(
pa_context *c,
pa_ext_device_restore_test_cb_t cb,
void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
pa_tagstruct_putu32(t, PA_INVALID_INDEX);
pa_tagstruct_puts(t, "module-device-restore");
pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_device_restore_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
return o;
}
pa_operation *pa_ext_device_restore_subscribe(
pa_context *c,
int enable,
pa_context_success_cb_t cb,
void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
pa_tagstruct_putu32(t, PA_INVALID_INDEX);
pa_tagstruct_puts(t, "module-device-restore");
pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
pa_tagstruct_put_boolean(t, enable);
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), (pa_free_cb_t) pa_operation_unref);
return o;
}
void pa_ext_device_restore_set_subscribe_cb(
pa_context *c,
pa_ext_device_restore_subscribe_cb_t cb,
void *userdata) {
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
if (pa_detect_fork())
return;
c->ext_device_restore.callback = cb;
c->ext_device_restore.userdata = userdata;
}
static void ext_device_restore_read_device_formats_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
pa_operation *o = userdata;
int eol = 1;
pa_assert(pd);
pa_assert(o);
pa_assert(PA_REFCNT_VALUE(o) >= 1);
if (!o->context)
goto finish;
if (command != PA_COMMAND_REPLY) {
if (pa_context_handle_error(o->context, command, t, false) < 0)
goto finish;
eol = -1;
} else {
uint8_t j;
while (!pa_tagstruct_eof(t)) {
pa_ext_device_restore_info i;
pa_zero(i);
if (pa_tagstruct_getu32(t, &i.type) < 0 ||
pa_tagstruct_getu32(t, &i.index) < 0 ||
pa_tagstruct_getu8(t, &i.n_formats) < 0) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (PA_DEVICE_TYPE_SINK != i.type && PA_DEVICE_TYPE_SOURCE != i.type) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (i.index == PA_INVALID_INDEX) {
pa_context_fail(o->context, PA_ERR_PROTOCOL);
goto finish;
}
if (i.n_formats > 0) {
i.formats = pa_xnew0(pa_format_info*, i.n_formats);
for (j = 0; j < i.n_formats; j++) {
pa_format_info *f = i.formats[j] = pa_format_info_new();
if (pa_tagstruct_get_format_info(t, f) < 0) {
uint8_t k;
pa_context_fail(o->context, PA_ERR_PROTOCOL);
for (k = 0; k < j+1; k++)
pa_format_info_free(i.formats[k]);
pa_xfree(i.formats);
goto finish;
}
}
}
if (o->callback) {
pa_ext_device_restore_read_device_formats_cb_t cb = (pa_ext_device_restore_read_device_formats_cb_t) o->callback;
cb(o->context, &i, 0, o->userdata);
}
for (j = 0; j < i.n_formats; j++)
pa_format_info_free(i.formats[j]);
pa_xfree(i.formats);
}
}
if (o->callback) {
pa_ext_device_restore_read_device_formats_cb_t cb = (pa_ext_device_restore_read_device_formats_cb_t) o->callback;
cb(o->context, NULL, eol, o->userdata);
}
finish:
pa_operation_done(o);
pa_operation_unref(o);
}
pa_operation *pa_ext_device_restore_read_formats_all(
pa_context *c,
pa_ext_device_restore_read_device_formats_cb_t cb,
void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
pa_tagstruct_putu32(t, PA_INVALID_INDEX);
pa_tagstruct_puts(t, "module-device-restore");
pa_tagstruct_putu32(t, SUBCOMMAND_READ_FORMATS_ALL);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_device_restore_read_device_formats_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
return o;
}
pa_operation *pa_ext_device_restore_read_formats(
pa_context *c,
pa_device_type_t type,
uint32_t idx,
pa_ext_device_restore_read_device_formats_cb_t cb,
void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_assert(idx != PA_INVALID_INDEX);
PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
pa_tagstruct_putu32(t, PA_INVALID_INDEX);
pa_tagstruct_puts(t, "module-device-restore");
pa_tagstruct_putu32(t, SUBCOMMAND_READ_FORMATS);
pa_tagstruct_putu32(t, type);
pa_tagstruct_putu32(t, idx);
pa_pstream_send_tagstruct(c->pstream, t);
pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_device_restore_read_device_formats_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
return o;
}
pa_operation *pa_ext_device_restore_save_formats(
pa_context *c,
pa_device_type_t type,
uint32_t idx,
uint8_t n_formats,
pa_format_info **formats,
pa_context_success_cb_t cb,
void *userdata) {
uint32_t tag;
pa_operation *o;
pa_tagstruct *t;
uint8_t j;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_assert(idx != PA_INVALID_INDEX);
pa_assert(n_formats > 0);
pa_assert(formats && *formats);
PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
pa_tagstruct_putu32(t, PA_INVALID_INDEX);
pa_tagstruct_puts(t, "module-device-restore");
pa_tagstruct_putu32(t, SUBCOMMAND_SAVE_FORMATS);
pa_tagstruct_putu32(t, type);
pa_tagstruct_putu32(t, idx);
pa_tagstruct_putu8(t, n_formats);
for (j = 0; j < n_formats; j++)
pa_tagstruct_put_format_info(t, formats[j]);
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), (pa_free_cb_t) pa_operation_unref);
return o;
}
/* Command function defined in internal.h */
void pa_ext_device_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
uint32_t subcommand;
pa_device_type_t type;
uint32_t idx;
pa_assert(c);
pa_assert(PA_REFCNT_VALUE(c) >= 1);
pa_assert(t);
if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
pa_tagstruct_getu32(t, &type) < 0 ||
pa_tagstruct_getu32(t, &idx) < 0 ||
!pa_tagstruct_eof(t)) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
if (subcommand != SUBCOMMAND_EVENT) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
if (PA_DEVICE_TYPE_SINK != type && PA_DEVICE_TYPE_SOURCE != type) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
if (idx == PA_INVALID_INDEX) {
pa_context_fail(c, PA_ERR_PROTOCOL);
return;
}
if (c->ext_device_restore.callback)
c->ext_device_restore.callback(c, type, idx, c->ext_device_restore.userdata);
}
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