gst/videofilter/: Port gamma filter to 0.10. Fixes #412704.

Original commit message from CVS:
Patch by: Mark Nauwelaerts <manauw at skynet be>
* gst/videofilter/Makefile.am:
* gst/videofilter/gstgamma.c: (gst_gamma_base_init),
(gst_gamma_class_init), (gst_gamma_init), (gst_gamma_set_property),
(gst_gamma_get_property), (gst_gamma_calculate_tables),
(oil_tablelookup_u8), (gst_gamma_set_caps),
(gst_gamma_planar411_ip), (gst_gamma_transform_ip), (plugin_init):
Port gamma filter to 0.10. Fixes #412704.
* tests/check/Makefile.am:
* tests/check/elements/videofilter.c: (setup_filter),
(cleanup_filter), (check_filter), (GST_START_TEST),
(videobalance_suite), (videoflip_suite), (gamma_suite), (main):
Add unit tests for videofilters.

2 files changed, 221 insertions, 0 deletions

diff --git a/tests/check/Makefile.am b/tests/check/Makefile.am
index 53121d87..c03b2a5a 100644
--- a/tests/check/Makefile.am
+++ b/tests/check/Makefile.am
@@ -40,6 +40,7 @@ check_PROGRAMS = \
 	elements/level \
 	elements/matroskamux \
 	elements/icydemux \
+	elements/videofilter
 	$(check_taglib)
     
 TESTS = $(check_PROGRAMS)
diff --git a/tests/check/elements/videofilter.c b/tests/check/elements/videofilter.c
new file mode 100644
index 00000000..d22d75bc
--- /dev/null
+++ b/tests/check/elements/videofilter.c
@@ -0,0 +1,220 @@
+/* GStreamer
+ *
+ * unit test for videofilter elements
+ *
+ * Copyright (C) <2006> Mark Nauwelaerts <manauw@skynet.be>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+#include <unistd.h>
+#include <stdarg.h>
+
+#include <gst/check/gstcheck.h>
+
+GList *buffers = NULL;
+gboolean have_eos = FALSE;
+
+/* For ease of programming we use globals to keep refs for our floating
+ * src and sink pads we create; otherwise we always have to do get_pad,
+ * get_peer, and then remove references in every test function */
+GstPad *mysrcpad, *mysinkpad;
+
+#define VIDEO_CAPS_STRING "video/x-raw-yuv, " \
+  "format = (fourcc) I420, " \
+  "width = (int) 384, " \
+  "height = (int) 288, " \
+  "framerate = (fraction) 25/1, " \
+  "pixel-aspect-ratio = (fraction) 1/1"
+
+
+static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VIDEO_CAPS_STRING)
+    );
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (VIDEO_CAPS_STRING)
+    );
+
+/* takes over reference for outcaps */
+GstElement *
+setup_filter (const gchar * name, const gchar * prop, va_list var_args)
+{
+  GstElement *element;
+
+  GST_DEBUG ("setup_element");
+  element = gst_check_setup_element (name);
+  g_object_set_valist (G_OBJECT (element), prop, var_args);
+  mysrcpad = gst_check_setup_src_pad (element, &srctemplate, NULL);
+  gst_pad_set_active (mysrcpad, TRUE);
+  mysinkpad = gst_check_setup_sink_pad (element, &sinktemplate, NULL);
+  gst_pad_set_active (mysinkpad, TRUE);
+
+  return element;
+}
+
+void
+cleanup_filter (GstElement * filter)
+{
+  GST_DEBUG ("cleanup_element");
+
+  gst_check_teardown_src_pad (filter);
+  gst_check_teardown_sink_pad (filter);
+  gst_check_teardown_element (filter);
+}
+
+
+check_filter (const gchar * name, gint num_buffers, const gchar * prop, ...)
+{
+  GstElement *filter;
+  GstBuffer *inbuffer, *outbuffer;
+  GstCaps *caps;
+  int i, size;
+  va_list varargs;
+
+  va_start (varargs, prop);
+  filter = setup_filter (name, prop, varargs);
+  va_end (varargs);
+  fail_unless (gst_element_set_state (filter,
+          GST_STATE_PLAYING) == GST_STATE_CHANGE_SUCCESS,
+      "could not set to playing");
+
+  /* corresponds to I420 buffer for the size mentioned in the caps */
+  size = 384 * 288 * 3 / 2;
+  for (i = 0; i < num_buffers; ++i) {
+    inbuffer = gst_buffer_new_and_alloc (size);
+    /* makes valgrind's memcheck happier */
+    memset (GST_BUFFER_DATA (inbuffer), 0, GST_BUFFER_SIZE (inbuffer));
+    caps = gst_caps_from_string (VIDEO_CAPS_STRING);
+    gst_buffer_set_caps (inbuffer, caps);
+    gst_caps_unref (caps);
+    GST_BUFFER_TIMESTAMP (inbuffer) = 0;
+    ASSERT_BUFFER_REFCOUNT (inbuffer, "inbuffer", 1);
+    fail_unless (gst_pad_push (mysrcpad, inbuffer) == GST_FLOW_OK);
+  }
+
+  fail_unless (g_list_length (buffers) == num_buffers);
+
+  /* clean up buffers */
+  for (i = 0; i < num_buffers; ++i) {
+    outbuffer = GST_BUFFER (buffers->data);
+    fail_if (outbuffer == NULL);
+
+    switch (i) {
+      case 0:
+        fail_unless (GST_BUFFER_SIZE (outbuffer) == size);
+        /* no check on filter operation itself */
+        break;
+      default:
+        break;
+    }
+    buffers = g_list_remove (buffers, outbuffer);
+
+    ASSERT_BUFFER_REFCOUNT (outbuffer, "outbuffer", 1);
+    gst_buffer_unref (outbuffer);
+    outbuffer = NULL;
+  }
+
+  cleanup_filter (filter);
+  g_list_free (buffers);
+  buffers = NULL;
+}
+
+
+GST_START_TEST (test_videobalance)
+{
+  check_filter ("videobalance", 2, NULL);
+}
+
+GST_END_TEST;
+
+
+GST_START_TEST (test_videoflip)
+{
+  /* these we can handle with the caps */
+  check_filter ("videoflip", 2, "method", 2, NULL);
+  check_filter ("videoflip", 2, "method", 4, NULL);
+  check_filter ("videoflip", 2, "method", 5, NULL);
+}
+
+GST_END_TEST;
+
+GST_START_TEST (test_gamma)
+{
+  check_filter ("gamma", 2, NULL);
+}
+
+GST_END_TEST;
+
+
+Suite *
+videobalance_suite ()
+{
+  Suite *s = suite_create ("videobalance");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_videobalance);
+
+  return s;
+}
+
+Suite *
+videoflip_suite ()
+{
+  Suite *s = suite_create ("videoflip");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_videoflip);
+
+  return s;
+}
+
+Suite *
+gamma_suite ()
+{
+  Suite *s = suite_create ("gamma");
+  TCase *tc_chain = tcase_create ("general");
+
+  suite_add_tcase (s, tc_chain);
+  tcase_add_test (tc_chain, test_gamma);
+
+  return s;
+}
+
+int
+main (int argc, char **argv)
+{
+  int nf;
+
+  Suite *s = videobalance_suite ();
+  SRunner *sr = srunner_create (s);
+
+  srunner_add_suite (sr, videoflip_suite ());
+  srunner_add_suite (sr, gamma_suite ());
+
+  gst_check_init (&argc, &argv);
+
+  srunner_run_all (sr, CK_NORMAL);
+  nf = srunner_ntests_failed (sr);
+  srunner_free (sr);
+
+  return nf;
+}