From a602ffdd541b828ab9b8aac9b20db31ce427ba8b Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 10 Jun 2013 19:48:47 +0200
Subject: [PATCH 01/35] cheese-camera: Add a capsfilter to our video-source bin

This serves 2 purposes:
1) It forces gstreamer to actually run the video source at the configured
   resolution, rather then say run it at 1600x1200 @ 5 fps and downscale
   that to 800x600 (still at 5 fps), as gstreamer opts to do with my
   Logitech Webcam Pro 9000, when left to its own auto negotiate code.
2) By greatly reducing the amount of advertised caps (this cam supports lots
   of different resolutions at many different framerates per resolution), it
   avoids a caps intersect "explosion", reducing the pipeline caps negotiation
   on my core i5 @ 3.1Ghz from aprox 1.1 sec to aprox 350 ms (*).

*) When combined with later patches in this patchset which also limit the
framerates in the filtered caps.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 libcheese/cheese-camera.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/libcheese/cheese-camera.c b/libcheese/cheese-camera.c
index a78affd..c42d896 100644
--- a/libcheese/cheese-camera.c
+++ b/libcheese/cheese-camera.c
@@ -417,7 +417,7 @@ cheese_camera_set_camera_source (CheeseCamera *camera)
   }
 
   camera_input = g_strdup_printf (
-    "%s name=video_source device=%s",
+    "%s name=video_source device=%s ! capsfilter name=video_source_filter",
     cheese_camera_device_get_src (selected_camera),
     cheese_camera_device_get_device_node (selected_camera));
 
@@ -762,7 +762,8 @@ cheese_camera_set_new_caps (CheeseCamera *camera)
 
   if (!gst_caps_is_empty (caps))
   {
-    GST_INFO_OBJECT (camera, "SETTING caps%" GST_PTR_FORMAT, caps);
+    GST_INFO_OBJECT (camera, "SETTING caps %" GST_PTR_FORMAT, caps);
+    g_object_set (gst_bin_get_by_name (GST_BIN (priv->video_source), "video_source_filter"), "caps", caps, NULL);
     g_object_set (priv->camerabin, "viewfinder-caps", caps, NULL);
   }
   gst_caps_unref (caps);
-- 
1.8.2.1