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-rw-r--r--polyp/polyplib-operation.c78
1 files changed, 78 insertions, 0 deletions
diff --git a/polyp/polyplib-operation.c b/polyp/polyplib-operation.c
new file mode 100644
index 00000000..994ac016
--- /dev/null
+++ b/polyp/polyplib-operation.c
@@ -0,0 +1,78 @@
+#include <assert.h>
+
+#include "xmalloc.h"
+#include "polyplib-internal.h"
+#include "polyplib-operation.h"
+
+struct pa_operation *pa_operation_new(struct pa_context *c, struct pa_stream *s) {
+ struct pa_operation *o;
+ assert(c);
+
+ o = pa_xmalloc(sizeof(struct pa_operation));
+ o->ref = 1;
+ o->context = pa_context_ref(c);
+ o->stream = s ? pa_stream_ref(s) : NULL;
+
+ o->state = PA_OPERATION_RUNNING;
+ o->userdata = NULL;
+ o->callback = NULL;
+
+ PA_LLIST_PREPEND(struct pa_operation, o->context->operations, o);
+ return pa_operation_ref(o);
+}
+
+struct pa_operation *pa_operation_ref(struct pa_operation *o) {
+ assert(o && o->ref >= 1);
+ o->ref++;
+ return o;
+}
+
+void pa_operation_unref(struct pa_operation *o) {
+ assert(o && o->ref >= 1);
+
+ if ((--(o->ref)) == 0) {
+ assert(!o->context);
+ assert(!o->stream);
+ free(o);
+ }
+}
+
+static void operation_set_state(struct pa_operation *o, enum pa_operation_state st) {
+ assert(o && o->ref >= 1);
+
+ if (st == o->state)
+ return;
+
+ if (!o->context)
+ return;
+
+ o->state = st;
+
+ if ((o->state == PA_OPERATION_DONE) || (o->state == PA_OPERATION_CANCELED)) {
+ PA_LLIST_REMOVE(struct pa_operation, o->context->operations, o);
+ pa_context_unref(o->context);
+ if (o->stream)
+ pa_stream_unref(o->stream);
+ o->context = NULL;
+ o->stream = NULL;
+ o->callback = NULL;
+ o->userdata = NULL;
+
+ pa_operation_unref(o);
+ }
+}
+
+void pa_operation_cancel(struct pa_operation *o) {
+ assert(o && o->ref >= 1);
+ operation_set_state(o, PA_OPERATION_CANCELED);
+}
+
+void pa_operation_done(struct pa_operation *o) {
+ assert(o && o->ref >= 1);
+ operation_set_state(o, PA_OPERATION_DONE);
+}
+
+enum pa_operation_state pa_operation_get_state(struct pa_operation *o) {
+ assert(o && o->ref >= 1);
+ return o->state;
+}