1 files changed, 81 insertions, 0 deletions
diff --git a/src/polyp/subscribe.c b/src/polyp/subscribe.c
new file mode 100644
index 00000000..c481f525
--- /dev/null
+++ b/src/polyp/subscribe.c
@@ -0,0 +1,81 @@
+/* $Id$ */
+
+/***
+  This file is part of polypaudio.
+ 
+  polypaudio 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 of the License,
+  or (at your option) any later version.
+ 
+  polypaudio 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 polypaudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <stdio.h>
+
+#include "subscribe.h"
+#include "internal.h"
+#include <polypcore/pstream-util.h>
+#include <polypcore/gccmacro.h>
+
+void pa_command_subscribe_event(pa_pdispatch *pd, uint32_t command, PA_GCC_UNUSED uint32_t tag, pa_tagstruct *t, void *userdata) {
+    pa_context *c = userdata;
+    pa_subscription_event_type_t e;
+    uint32_t index;
+    assert(pd && command == PA_COMMAND_SUBSCRIBE_EVENT && t && c);
+
+    pa_context_ref(c);
+
+    if (pa_tagstruct_getu32(t, &e) < 0 ||
+        pa_tagstruct_getu32(t, &index) < 0 ||
+        !pa_tagstruct_eof(t)) {
+        pa_context_fail(c, PA_ERROR_PROTOCOL);
+        goto finish;
+    }
+
+    if (c->subscribe_callback)
+        c->subscribe_callback(c, e, index, c->subscribe_userdata);
+
+finish:
+    pa_context_unref(c);
+}
+
+
+pa_operation* pa_context_subscribe(pa_context *c, pa_subscription_mask_t m, void (*cb)(pa_context *c, int success, void *userdata), void *userdata) {
+    pa_operation *o;
+    pa_tagstruct *t;
+    uint32_t tag;
+    assert(c);
+
+    o = pa_operation_new(c, NULL);
+    o->callback = (pa_operation_callback) cb;
+    o->userdata = userdata;
+
+    t = pa_tagstruct_new(NULL, 0);
+    pa_tagstruct_putu32(t, PA_COMMAND_SUBSCRIBE);
+    pa_tagstruct_putu32(t, tag = c->ctag++);
+    pa_tagstruct_putu32(t, m);
+    pa_pstream_send_tagstruct(c->pstream, t);
+    pa_pdispatch_register_reply(c->pdispatch, tag, DEFAULT_TIMEOUT, pa_context_simple_ack_callback, o);
+
+    return pa_operation_ref(o);
+}
+
+void pa_context_set_subscribe_callback(pa_context *c, void (*cb)(pa_context *c, pa_subscription_event_type_t t, uint32_t index, void *userdata), void *userdata) {
+    assert(c);
+    c->subscribe_callback = cb;
+    c->subscribe_userdata = userdata;
+}