From d4105d4b56b0b07d8994abf92db620ba1f533ab0 Mon Sep 17 00:00:00 2001
From: Thiago Santos <thiago.sousa.santos@collabora.com>
Date: Tue, 1 Nov 2011 11:47:46 -0300
Subject: [PATCH] camerabin2: On capture error, skip previews

When the camera source fails to do some capture, skip the next
preview and decrement processing counter.
---
 gst/camerabin2/gstcamerabin2.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/gst/camerabin2/gstcamerabin2.c b/gst/camerabin2/gstcamerabin2.c
index 4c68a3f779..eebf12041d 100644
--- a/gst/camerabin2/gstcamerabin2.c
+++ b/gst/camerabin2/gstcamerabin2.c
@@ -933,6 +933,26 @@ gst_video_capture_bin_post_video_done (GstCameraBin2 * camera)
     GST_WARNING_OBJECT (camera, "Failed to post video-done message");
 }
 
+static void
+gst_camera_bin_skip_next_preview (GstCameraBin2 * camerabin)
+{
+  gchar *location;
+
+  g_mutex_lock (camerabin->preview_list_mutex);
+  if (camerabin->preview_location_list) {
+    location = camerabin->preview_location_list->data;
+    GST_DEBUG_OBJECT (camerabin, "Skipping preview for %s", location);
+    g_free (location);
+    camerabin->preview_location_list =
+        g_slist_delete_link (camerabin->preview_location_list,
+        camerabin->preview_location_list);
+    GST_CAMERA_BIN2_PROCESSING_DEC (camerabin);
+  } else {
+    GST_WARNING_OBJECT (camerabin, "No previews to skip");
+  }
+  g_mutex_unlock (camerabin->preview_list_mutex);
+}
+
 static void
 gst_camera_bin_handle_message (GstBin * bin, GstMessage * message)
 {
@@ -995,6 +1015,9 @@ gst_camera_bin_handle_message (GstBin * bin, GstMessage * message)
         GST_WARNING_OBJECT (bin, "Capture failed, reason: %s - %s",
             err->message, debug);
         GST_CAMERA_BIN2_PROCESSING_DEC (GST_CAMERA_BIN2_CAST (bin));
+        if (camerabin->post_previews) {
+          gst_camera_bin_skip_next_preview (camerabin);
+        }
       }
     }
       break;