From 35765bec0eec4d6f2d59092dbe13b34d0ead2694 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wang=20Xin-yu=20=28=E7=8E=8B=E6=98=95=E5=AE=87=29?=
 <comicfans44@gmail.com>
Date: Wed, 24 Feb 2016 10:45:17 +0800
Subject: [PATCH] glmixer: iterator didn't advance in continue statement

Leading to a deadlock.

https://bugzilla.gnome.org/show_bug.cgi?id=760873
---
 ext/gl/gstglmosaic.c     | 1 +
 ext/gl/gstglstereomix.c  | 1 +
 ext/gl/gstglvideomixer.c | 2 ++
 3 files changed, 4 insertions(+)

diff --git a/ext/gl/gstglmosaic.c b/ext/gl/gstglmosaic.c
index 83ac79810e..377f71869f 100644
--- a/ext/gl/gstglmosaic.c
+++ b/ext/gl/gstglmosaic.c
@@ -299,6 +299,7 @@ gst_gl_mosaic_callback (gpointer stuff)
       GST_DEBUG ("skipping texture:%u pad:%p width:%u height %u",
           in_tex, pad, width, height);
       count++;
+      walk = g_list_next (walk);
       continue;
     }
 
diff --git a/ext/gl/gstglstereomix.c b/ext/gl/gstglstereomix.c
index fee1080c26..ed604b2c81 100644
--- a/ext/gl/gstglstereomix.c
+++ b/ext/gl/gstglstereomix.c
@@ -505,6 +505,7 @@ gst_gl_stereo_mix_process_frames (GstGLStereoMix * mixer)
 
     if (!pad || !pad->current_buffer) {
       GST_DEBUG ("skipping texture, null frame");
+      walk = g_list_next (walk);
       continue;
     }
 
diff --git a/ext/gl/gstglvideomixer.c b/ext/gl/gstglvideomixer.c
index e48151bd04..72ad8c232d 100644
--- a/ext/gl/gstglvideomixer.c
+++ b/ext/gl/gstglvideomixer.c
@@ -1437,11 +1437,13 @@ gst_gl_video_mixer_callback (gpointer stuff)
         || pad->alpha == 0.0f) {
       GST_DEBUG ("skipping texture:%u pad:%p width:%u height:%u alpha:%f",
           mix_pad->current_texture, pad, in_width, in_height, pad->alpha);
+      walk = g_list_next (walk);
       continue;
     }
 
     if (!_set_blend_state (video_mixer, pad)) {
       GST_FIXME_OBJECT (pad, "skipping due to incorrect blend parameters");
+      walk = g_list_next (walk);
       continue;
     }