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https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
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ac595189fd
git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@138 fefdeb5f-60dc-0310-8127-8f9354f1896f
103 lines
2.6 KiB
C
103 lines
2.6 KiB
C
/* $Id$ */
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/***
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This file is part of polypaudio.
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polypaudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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polypaudio 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 General Public License
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along with polypaudio; 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 <assert.h>
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#include "xmalloc.h"
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#include "polyplib-internal.h"
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#include "polyplib-operation.h"
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struct pa_operation *pa_operation_new(struct pa_context *c, struct pa_stream *s) {
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struct pa_operation *o;
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assert(c);
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o = pa_xmalloc(sizeof(struct pa_operation));
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o->ref = 1;
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o->context = pa_context_ref(c);
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o->stream = s ? pa_stream_ref(s) : NULL;
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o->state = PA_OPERATION_RUNNING;
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o->userdata = NULL;
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o->callback = NULL;
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PA_LLIST_PREPEND(struct pa_operation, o->context->operations, o);
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return pa_operation_ref(o);
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}
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struct pa_operation *pa_operation_ref(struct pa_operation *o) {
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assert(o && o->ref >= 1);
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o->ref++;
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return o;
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}
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void pa_operation_unref(struct pa_operation *o) {
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assert(o && o->ref >= 1);
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if ((--(o->ref)) == 0) {
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assert(!o->context);
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assert(!o->stream);
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free(o);
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}
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}
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static void operation_set_state(struct pa_operation *o, enum pa_operation_state st) {
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assert(o && o->ref >= 1);
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if (st == o->state)
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return;
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if (!o->context)
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return;
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o->state = st;
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if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED)) {
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PA_LLIST_REMOVE(struct pa_operation, o->context->operations, o);
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pa_context_unref(o->context);
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if (o->stream)
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pa_stream_unref(o->stream);
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o->context = NULL;
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o->stream = NULL;
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o->callback = NULL;
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o->userdata = NULL;
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pa_operation_unref(o);
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}
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}
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void pa_operation_cancel(struct pa_operation *o) {
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assert(o && o->ref >= 1);
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operation_set_state(o, PA_OPERATION_CANCELED);
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}
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void pa_operation_done(struct pa_operation *o) {
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assert(o && o->ref >= 1);
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operation_set_state(o, PA_OPERATION_DONE);
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}
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enum pa_operation_state pa_operation_get_state(struct pa_operation *o) {
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assert(o && o->ref >= 1);
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return o->state;
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}
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