Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 154 insertions, 0 deletions

diff --git a/src/pulse/operation.c b/src/pulse/operation.c
new file mode 100644
index 0000000..3f396f0
--- /dev/null
+++ b/src/pulse/operation.c
@@ -0,0 +1,154 @@
+/***
+  This file is part of PulseAudio.
+
+  Copyright 2004-2006 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/xmalloc.h>
+#include <pulsecore/macro.h>
+#include <pulsecore/flist.h>
+#include <pulse/fork-detect.h>
+
+#include "internal.h"
+#include "operation.h"
+
+PA_STATIC_FLIST_DECLARE(operations, 0, pa_xfree);
+
+pa_operation *pa_operation_new(pa_context *c, pa_stream *s, pa_operation_cb_t cb, void *userdata) {
+    pa_operation *o;
+    pa_assert(c);
+
+    if (!(o = pa_flist_pop(PA_STATIC_FLIST_GET(operations))))
+        o = pa_xnew(pa_operation, 1);
+
+    pa_zero(*o);
+
+    PA_REFCNT_INIT(o);
+    o->context = c;
+    o->stream = s;
+
+    o->state = PA_OPERATION_RUNNING;
+    o->callback = cb;
+    o->userdata = userdata;
+
+    /* Refcounting is strictly one-way: from the "bigger" to the "smaller" object. */
+    PA_LLIST_PREPEND(pa_operation, c->operations, o);
+    pa_operation_ref(o);
+
+    return o;
+}
+
+pa_operation *pa_operation_ref(pa_operation *o) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    PA_REFCNT_INC(o);
+    return o;
+}
+
+void pa_operation_unref(pa_operation *o) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (PA_REFCNT_DEC(o) <= 0) {
+        pa_assert(!o->context);
+        pa_assert(!o->stream);
+
+        if (pa_flist_push(PA_STATIC_FLIST_GET(operations), o) < 0)
+            pa_xfree(o);
+    }
+}
+
+static void operation_unlink(pa_operation *o) {
+    pa_assert(o);
+
+    if (o->context) {
+        pa_assert(PA_REFCNT_VALUE(o) >= 2);
+
+        PA_LLIST_REMOVE(pa_operation, o->context->operations, o);
+        pa_operation_unref(o);
+
+        o->context = NULL;
+    }
+
+    o->stream = NULL;
+    o->callback = NULL;
+    o->userdata = NULL;
+    o->state_callback = NULL;
+    o->state_userdata = NULL;
+}
+
+static void operation_set_state(pa_operation *o, pa_operation_state_t st) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (st == o->state)
+        return;
+
+    if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED))
+        return;
+
+    pa_operation_ref(o);
+
+    o->state = st;
+
+    if (o->state_callback)
+        o->state_callback(o, o->state_userdata);
+
+    if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED))
+        operation_unlink(o);
+
+    pa_operation_unref(o);
+}
+
+void pa_operation_cancel(pa_operation *o) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    operation_set_state(o, PA_OPERATION_CANCELED);
+}
+
+void pa_operation_done(pa_operation *o) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    operation_set_state(o, PA_OPERATION_DONE);
+}
+
+pa_operation_state_t pa_operation_get_state(const pa_operation *o) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    return o->state;
+}
+
+void pa_operation_set_state_callback(pa_operation *o, pa_operation_notify_cb_t cb, void *userdata) {
+    pa_assert(o);
+    pa_assert(PA_REFCNT_VALUE(o) >= 1);
+
+    if (pa_detect_fork())
+        return;
+
+    if (o->state == PA_OPERATION_DONE || o->state == PA_OPERATION_CANCELED)
+        return;
+
+    o->state_callback = cb;
+    o->state_userdata = userdata;
+}