mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-07 13:30:03 -05:00
300384ce0a
The pa_xmalloc calls oom() in case of NULL pointer returned by malloc() on one hand and dereferencing of pointer is happen early than actual check on other hand. Thus, just remove useless checks.
365 lines
11 KiB
C
365 lines
11 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2008 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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USA.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <pulse/context.h>
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#include <pulse/gccmacro.h>
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#include <pulsecore/macro.h>
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#include <pulsecore/pstream-util.h>
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#include "internal.h"
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#include "operation.h"
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#include "fork-detect.h"
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#include "ext-stream-restore.h"
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enum {
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SUBCOMMAND_TEST,
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SUBCOMMAND_READ,
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SUBCOMMAND_WRITE,
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SUBCOMMAND_DELETE,
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SUBCOMMAND_SUBSCRIBE,
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SUBCOMMAND_EVENT
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};
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static void ext_stream_restore_test_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
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pa_operation *o = userdata;
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uint32_t version = PA_INVALID_INDEX;
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pa_assert(pd);
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pa_assert(o);
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pa_assert(PA_REFCNT_VALUE(o) >= 1);
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if (!o->context)
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goto finish;
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if (command != PA_COMMAND_REPLY) {
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if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
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goto finish;
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} else if (pa_tagstruct_getu32(t, &version) < 0 ||
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!pa_tagstruct_eof(t)) {
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pa_context_fail(o->context, PA_ERR_PROTOCOL);
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goto finish;
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}
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if (o->callback) {
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pa_ext_stream_restore_test_cb_t cb = (pa_ext_stream_restore_test_cb_t) o->callback;
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cb(o->context, version, o->userdata);
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}
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finish:
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pa_operation_done(o);
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pa_operation_unref(o);
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}
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pa_operation *pa_ext_stream_restore_test(
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pa_context *c,
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pa_ext_stream_restore_test_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o;
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pa_tagstruct *t;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-stream-restore");
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pa_tagstruct_putu32(t, SUBCOMMAND_TEST);
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pa_pstream_send_tagstruct(c->pstream, t);
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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);
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return o;
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}
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static void ext_stream_restore_read_cb(pa_pdispatch *pd, uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
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pa_operation *o = userdata;
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int eol = 1;
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pa_assert(pd);
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pa_assert(o);
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pa_assert(PA_REFCNT_VALUE(o) >= 1);
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if (!o->context)
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goto finish;
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if (command != PA_COMMAND_REPLY) {
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if (pa_context_handle_error(o->context, command, t, FALSE) < 0)
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goto finish;
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eol = -1;
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} else {
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while (!pa_tagstruct_eof(t)) {
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pa_ext_stream_restore_info i;
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pa_bool_t mute = FALSE;
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memset(&i, 0, sizeof(i));
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if (pa_tagstruct_gets(t, &i.name) < 0 ||
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pa_tagstruct_get_channel_map(t, &i.channel_map) < 0 ||
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pa_tagstruct_get_cvolume(t, &i.volume) < 0 ||
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pa_tagstruct_gets(t, &i.device) < 0 ||
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pa_tagstruct_get_boolean(t, &mute) < 0) {
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pa_context_fail(o->context, PA_ERR_PROTOCOL);
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goto finish;
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}
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i.mute = (int) mute;
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if (o->callback) {
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pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
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cb(o->context, &i, 0, o->userdata);
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}
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}
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}
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if (o->callback) {
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pa_ext_stream_restore_read_cb_t cb = (pa_ext_stream_restore_read_cb_t) o->callback;
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cb(o->context, NULL, eol, o->userdata);
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}
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finish:
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pa_operation_done(o);
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pa_operation_unref(o);
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}
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pa_operation *pa_ext_stream_restore_read(
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pa_context *c,
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pa_ext_stream_restore_read_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o;
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pa_tagstruct *t;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-stream-restore");
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pa_tagstruct_putu32(t, SUBCOMMAND_READ);
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pa_pstream_send_tagstruct(c->pstream, t);
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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);
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return o;
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}
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pa_operation *pa_ext_stream_restore_write(
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pa_context *c,
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pa_update_mode_t mode,
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const pa_ext_stream_restore_info data[],
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unsigned n,
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int apply_immediately,
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pa_context_success_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o = NULL;
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pa_tagstruct *t = NULL;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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pa_assert(mode == PA_UPDATE_MERGE || mode == PA_UPDATE_REPLACE || mode == PA_UPDATE_SET);
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pa_assert(data);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-stream-restore");
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pa_tagstruct_putu32(t, SUBCOMMAND_WRITE);
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pa_tagstruct_putu32(t, mode);
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pa_tagstruct_put_boolean(t, apply_immediately);
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for (; n > 0; n--, data++) {
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if (!data->name || !*data->name)
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goto fail;
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pa_tagstruct_puts(t, data->name);
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if (data->volume.channels > 0 &&
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!pa_cvolume_compatible_with_channel_map(&data->volume, &data->channel_map))
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goto fail;
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pa_tagstruct_put_channel_map(t, &data->channel_map);
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pa_tagstruct_put_cvolume(t, &data->volume);
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pa_tagstruct_puts(t, data->device);
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pa_tagstruct_put_boolean(t, data->mute);
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}
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pa_pstream_send_tagstruct(c->pstream, t);
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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);
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return o;
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fail:
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pa_operation_cancel(o);
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pa_operation_unref(o);
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pa_tagstruct_free(t);
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pa_context_set_error(c, PA_ERR_INVALID);
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return NULL;
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}
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pa_operation *pa_ext_stream_restore_delete(
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pa_context *c,
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const char *const s[],
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pa_context_success_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o = NULL;
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pa_tagstruct *t = NULL;
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const char *const *k;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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pa_assert(s);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-stream-restore");
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pa_tagstruct_putu32(t, SUBCOMMAND_DELETE);
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for (k = s; *k; k++) {
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if (!*k || !**k)
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goto fail;
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pa_tagstruct_puts(t, *k);
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}
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pa_pstream_send_tagstruct(c->pstream, t);
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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);
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return o;
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fail:
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pa_operation_cancel(o);
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pa_operation_unref(o);
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pa_tagstruct_free(t);
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pa_context_set_error(c, PA_ERR_INVALID);
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return NULL;
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}
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pa_operation *pa_ext_stream_restore_subscribe(
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pa_context *c,
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int enable,
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pa_context_success_cb_t cb,
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void *userdata) {
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uint32_t tag;
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pa_operation *o;
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pa_tagstruct *t;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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PA_CHECK_VALIDITY_RETURN_NULL(c, !pa_detect_fork(), PA_ERR_FORKED);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->state == PA_CONTEXT_READY, PA_ERR_BADSTATE);
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PA_CHECK_VALIDITY_RETURN_NULL(c, c->version >= 14, PA_ERR_NOTSUPPORTED);
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o = pa_operation_new(c, NULL, (pa_operation_cb_t) cb, userdata);
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t = pa_tagstruct_command(c, PA_COMMAND_EXTENSION, &tag);
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pa_tagstruct_putu32(t, PA_INVALID_INDEX);
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pa_tagstruct_puts(t, "module-stream-restore");
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pa_tagstruct_putu32(t, SUBCOMMAND_SUBSCRIBE);
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pa_tagstruct_put_boolean(t, enable);
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pa_pstream_send_tagstruct(c->pstream, t);
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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);
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return o;
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}
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void pa_ext_stream_restore_set_subscribe_cb(
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pa_context *c,
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pa_ext_stream_restore_subscribe_cb_t cb,
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void *userdata) {
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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if (pa_detect_fork())
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return;
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c->ext_stream_restore.callback = cb;
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c->ext_stream_restore.userdata = userdata;
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}
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void pa_ext_stream_restore_command(pa_context *c, uint32_t tag, pa_tagstruct *t) {
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uint32_t subcommand;
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pa_assert(c);
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pa_assert(PA_REFCNT_VALUE(c) >= 1);
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pa_assert(t);
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if (pa_tagstruct_getu32(t, &subcommand) < 0 ||
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!pa_tagstruct_eof(t)) {
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pa_context_fail(c, PA_ERR_PROTOCOL);
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return;
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}
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if (subcommand != SUBCOMMAND_EVENT) {
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pa_context_fail(c, PA_ERR_PROTOCOL);
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return;
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}
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if (c->ext_stream_restore.callback)
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c->ext_stream_restore.callback(c, c->ext_stream_restore.userdata);
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}
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