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-rw-r--r--src/pulse/ext-stream-restore.c361
1 files changed, 361 insertions, 0 deletions
diff --git a/src/pulse/ext-stream-restore.c b/src/pulse/ext-stream-restore.c
new file mode 100644
index 0000000..a250d24
--- /dev/null
+++ b/src/pulse/ext-stream-restore.c
@@ -0,0 +1,361 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2008 Lennart Poettering
+
+ 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/fork-detect.h>
+#include <pulse/operation.h>
+
+#include <pulsecore/macro.h>
+#include <pulsecore/pstream-util.h>
+
+#include "internal.h"
+#include "ext-stream-restore.h"
+
+enum {
+ SUBCOMMAND_TEST,
+ SUBCOMMAND_READ,
+ SUBCOMMAND_WRITE,
+ SUBCOMMAND_DELETE,
+ SUBCOMMAND_SUBSCRIBE,
+ SUBCOMMAND_EVENT
+};
+
+static void ext_stream_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_stream_restore_test_cb_t cb = (pa_ext_stream_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_stream_restore_test(
+ pa_context *c,
+ pa_ext_stream_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-stream-restore");
+ pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_test_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+static void ext_stream_restore_read_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 {
+
+ while (!pa_tagstruct_eof(t)) {
+ pa_ext_stream_restore_info i;
+ bool mute = false;
+
+ memset(&i, 0, sizeof(i));
+
+ if (pa_tagstruct_gets(t, &i.name) < 0 ||
+ pa_tagstruct_get_channel_map(t, &i.channel_map) < 0 ||
+ pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
+ pa_tagstruct_gets(t, &i.device) < 0 ||
+ pa_tagstruct_get_boolean(t, &mute) < 0) {
+
+ pa_context_fail(o->context, PA_ERR_PROTOCOL);
+ goto finish;
+ }
+
+ i.mute = (int) mute;
+
+ if (o->callback) {
+ pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
+ cb(o->context, &i, 0, o->userdata);
+ }
+ }
+ }
+
+ if (o->callback) {
+ pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
+ cb(o->context, NULL, eol, o->userdata);
+ }
+
+finish:
+ pa_operation_done(o);
+ pa_operation_unref(o);
+}
+
+pa_operation *pa_ext_stream_restore_read(
+ pa_context *c,
+ pa_ext_stream_restore_read_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-stream-restore");
+ pa_tagstruct_putu32(t, SUBCOMMAND_READ);
+ pa_pstream_send_tagstruct(c->pstream, t);
+ pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, ext_stream_restore_read_cb, pa_operation_ref(o), (pa_free_cb_t) pa_operation_unref);
+
+ return o;
+}
+
+pa_operation *pa_ext_stream_restore_write(
+ pa_context *c,
+ pa_update_mode_t mode,
+ const pa_ext_stream_restore_info data[],
+ unsigned n,
+ int apply_immediately,
+ pa_context_success_cb_t cb,
+ void *userdata) {
+
+ uint32_t tag;
+ pa_operation *o = NULL;
+ pa_tagstruct *t = NULL;
+
+ pa_assert(c);
+ pa_assert(PA_REFCNT_VALUE(c) >= 1);
+ pa_assert(mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE || mode == PA_UPDATE_SET);
+ pa_assert(data);
+
+ 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-stream-restore");
+ pa_tagstruct_putu32(t, SUBCOMMAND_WRITE);
+
+ pa_tagstruct_putu32(t, mode);
+ pa_tagstruct_put_boolean(t, apply_immediately);
+
+ for (; n > 0; n--, data++) {
+ if (!data->name || !*data->name)
+ goto fail;
+
+ pa_tagstruct_puts(t, data->name);
+
+ if (data->volume.channels > 0 &&
+ !pa_cvolume_compatible_with_channel_map(&data->volume, &data->channel_map))
+ goto fail;
+
+ pa_tagstruct_put_channel_map(t, &data->channel_map);
+ pa_tagstruct_put_cvolume(t, &data->volume);
+ pa_tagstruct_puts(t, data->device);
+ pa_tagstruct_put_boolean(t, data->mute);
+ }
+
+ 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;
+
+fail:
+ pa_operation_cancel(o);
+ pa_operation_unref(o);
+
+ pa_tagstruct_free(t);
+
+ pa_context_set_error(c, PA_ERR_INVALID);
+ return NULL;
+}
+
+pa_operation *pa_ext_stream_restore_delete(
+ pa_context *c,
+ const char *const s[],
+ pa_context_success_cb_t cb,
+ void *userdata) {
+
+ uint32_t tag;
+ pa_operation *o = NULL;
+ pa_tagstruct *t = NULL;
+ const char *const *k;
+
+ pa_assert(c);
+ pa_assert(PA_REFCNT_VALUE(c) >= 1);
+ pa_assert(s);
+
+ 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-stream-restore");
+ pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
+
+ for (k = s; *k; k++) {
+ if (!*k || !**k)
+ goto fail;
+
+ pa_tagstruct_puts(t, *k);
+ }
+
+ 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;
+
+fail:
+ pa_operation_cancel(o);
+ pa_operation_unref(o);
+
+ pa_tagstruct_free(t);
+
+ pa_context_set_error(c, PA_ERR_INVALID);
+ return NULL;
+}
+
+pa_operation *pa_ext_stream_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-stream-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_stream_restore_set_subscribe_cb(
+ pa_context *c,
+ pa_ext_stream_restore_subscribe_cb_t cb,
+ void *userdata) {
+
+ pa_assert(c);
+ pa_assert(PA_REFCNT_VALUE(c) >= 1);
+
+ if (pa_detect_fork())
+ return;
+
+ c->ext_stream_restore.callback = cb;
+ c->ext_stream_restore.userdata = userdata;
+}
+
+void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
+ uint32_t subcommand;
+
+ pa_assert(c);
+ pa_assert(PA_REFCNT_VALUE(c) >= 1);
+ pa_assert(t);
+
+ if (pa_tagstruct_getu32(t, &subcommand) < 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 (c->ext_stream_restore.callback)
+ c->ext_stream_restore.callback(c, c->ext_stream_restore.userdata);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 08:26:03 +0000