From fb6f8721e24f916a5a609d55a74870a1c7e4ac1b Mon Sep 17 00:00:00 2001
From: jp9000 <obs.jim@gmail.com>
Date: Sat, 27 Dec 2014 20:55:03 -0800
Subject: [PATCH] libobs: Add 'audio_sync' source signal

Adds a signal is called when the sync offset has changed for a source.
---
 libobs/obs-source.c | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/libobs/obs-source.c b/libobs/obs-source.c
index f59c44816..cd8dc2a1a 100644
--- a/libobs/obs-source.c
+++ b/libobs/obs-source.c
@@ -82,6 +82,7 @@ static const char *source_signals[] = {
 	"void volume(ptr source, in out float volume)",
 	"void update_properties(ptr source)",
 	"void update_flags(ptr source, int flags)",
+	"void audio_sync(ptr source, int out int offset)",
 	"void audio_data(ptr source, ptr data)",
 	NULL
 };
@@ -1881,8 +1882,18 @@ float obs_source_get_present_volume(const obs_source_t *source)
 
 void obs_source_set_sync_offset(obs_source_t *source, int64_t offset)
 {
-	if (source)
-		source->sync_offset = offset;
+	if (source) {
+		struct calldata data = {0};
+
+		calldata_set_ptr(&data, "source", source);
+		calldata_set_int(&data, "offset", offset);
+
+		signal_handler_signal(source->context.signals, "audio_sync",
+				&data);
+
+		source->sync_offset = calldata_int(&data, "offset");
+		calldata_free(&data);
+	}
 }
 
 int64_t obs_source_get_sync_offset(const obs_source_t *source)
-- 
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