From b25ff16fb06615172bb7379fcb8087c358aa1984 Mon Sep 17 00:00:00 2001
From: Jakub Adam <jakub.adam@ktknet.cz>
Date: Mon, 27 Dec 2010 01:16:05 +0100
Subject: [PATCH] media: capture pipeline with SIGUSR1

Save graph to GST_DEBUG_DUMP_DOT_DIR when program receives SIGUSR1, so
the media pipeline can be inspected at any time.
---
 src/purple/purple-media.c  | 15 ++++++++++-----
 src/purple/purple-plugin.c | 21 +++++++++++++++++++++
 2 files changed, 31 insertions(+), 5 deletions(-)

diff --git a/src/purple/purple-media.c b/src/purple/purple-media.c
index 03e248ec..57e2b27e 100644
--- a/src/purple/purple-media.c
+++ b/src/purple/purple-media.c
@@ -102,17 +102,22 @@ on_state_changed_cb(SIPE_UNUSED_PARAMETER PurpleMedia *media,
 		call->media_connected_cb(call);
 }
 
-static void
-capture_pipeline(PurpleMedia *media, gchar *label) {
-	PurpleMediaManager *manager = purple_media_get_manager(media);
+/* Used externally in purple-plugin.c. This declaration stops the compiler
+ * complaining about missing prototype. */
+void capture_pipeline(gchar *label);
+
+void
+capture_pipeline(gchar *label) {
+	PurpleMediaManager *manager = purple_media_manager_get();
 	GstElement *pipeline = purple_media_manager_get_pipeline(manager);
 	GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS(GST_BIN(pipeline), GST_DEBUG_GRAPH_SHOW_ALL, label);
 }
 
 static void
-on_error_cb(PurpleMedia *media, gchar *message, struct stream_info_context *ctx)
+on_error_cb(SIPE_UNUSED_PARAMETER PurpleMedia *media, gchar *message,
+	    struct stream_info_context *ctx)
 {
-	capture_pipeline(media, "ERROR");
+	capture_pipeline("ERROR");
 
 	if (ctx->call->error_cb)
 		ctx->call->error_cb(ctx->call, ctx->backend_media, message);
diff --git a/src/purple/purple-plugin.c b/src/purple/purple-plugin.c
index 31f31aee..d797ea7f 100644
--- a/src/purple/purple-plugin.c
+++ b/src/purple/purple-plugin.c
@@ -397,6 +397,15 @@ sipe_purple_get_account_text_table(SIPE_UNUSED_PARAMETER PurpleAccount *account)
 
 #if PURPLE_VERSION_CHECK(2,6,0)
 #ifdef HAVE_VV
+
+extern void capture_pipeline(gchar *label);
+
+static void
+sipe_purple_sigusr1_handler(SIPE_UNUSED_PARAMETER int signum)
+{
+	capture_pipeline("PURPLE_SIPE_PIPELINE");
+}
+
 static gboolean sipe_purple_initiate_media(PurpleAccount *account, const char *who,
 					   SIPE_UNUSED_PARAMETER PurpleMediaSessionType type)
 {
@@ -511,11 +520,23 @@ static PurplePluginProtocolInfo sipe_prpl_info =
 /* PurplePluginInfo function calls & data structure */
 static gboolean sipe_purple_plugin_load(SIPE_UNUSED_PARAMETER PurplePlugin *plugin)
 {
+#ifdef HAVE_VV
+	struct sigaction action;
+	memset(&action, 0, sizeof (action));
+	action.sa_handler = sipe_purple_sigusr1_handler;
+	sigaction(SIGUSR1, &action, NULL);
+#endif
 	return TRUE;
 }
 
 static gboolean sipe_purple_plugin_unload(SIPE_UNUSED_PARAMETER PurplePlugin *plugin)
 {
+#ifdef HAVE_VV
+	struct sigaction action;
+	memset(&action, 0, sizeof (action));
+	action.sa_handler = SIG_DFL;
+	sigaction(SIGUSR1, &action, NULL);
+#endif
 	return TRUE;
 }
 
-- 
2.11.4.GIT