sys/glsink/: Add gltestsrc element, a duplicate of videotestsrc that uses

Original commit message from CVS:
* sys/glsink/Makefile.am:
* sys/glsink/gltestsrc.c:
* sys/glsink/gltestsrc.h:
* sys/glsink/gstgldisplay.c:
* sys/glsink/gstgldownload.c:
* sys/glsink/gstglfilter.c:
* sys/glsink/gstgltestsrc.c:
* sys/glsink/gstgltestsrc.h:
* sys/glsink/gstglupload.c:
* sys/glsink/gstopengl.c:
Add gltestsrc element, a duplicate of videotestsrc that uses
GL rendering to create images.  More cleanup.

1 files changed, 637 insertions, 0 deletions

diff --git a/sys/glsink/gstgltestsrc.c b/sys/glsink/gstgltestsrc.c
new file mode 100644
index 00000000..66d32f60
--- /dev/null
+++ b/sys/glsink/gstgltestsrc.c
@@ -0,0 +1,637 @@
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) 2002,2007 David A. Schleef <ds@schleef.org>
+ *
+ * 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.
+ */
+
+/**
+ * SECTION:element-gltestsrc
+ *
+ * <refsect2>
+ * <para>
+ * The gltestsrc element is used to produce test video data in a wide variaty
+ * of formats. The video test data produced can be controlled with the "pattern"
+ * property.
+ * </para>
+ * <title>Example launch line</title>
+ * <para>
+ * <programlisting>
+ * gst-launch -v gltestsrc pattern=snow ! ximagesink
+ * </programlisting>
+ * Shows random noise in an X window.
+ * </para>
+ * </refsect2>
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include "gstgltestsrc.h"
+#include "gltestsrc.h"
+#include "gstglbuffer.h"
+#include "glextensions.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+#define USE_PEER_BUFFERALLOC
+
+GST_DEBUG_CATEGORY_STATIC (gl_test_src_debug);
+#define GST_CAT_DEFAULT gl_test_src_debug
+
+#define GST_GL_VIDEO_CAPS "video/x-raw-gl,width=(int)[1,2048],height=(int)[1,2048],framerate=(fraction)[0/1,100/1],pixel_aspect_ratio=(fraction)[0/1,100/1]"
+
+static const GstElementDetails gl_test_src_details =
+GST_ELEMENT_DETAILS ("Video test source",
+    "Source/Video",
+    "Creates a test video stream",
+    "David A. Schleef <ds@schleef.org>");
+
+
+enum
+{
+  PROP_0,
+  PROP_PATTERN,
+  PROP_TIMESTAMP_OFFSET,
+  PROP_IS_LIVE
+      /* FILL ME */
+};
+
+
+GST_BOILERPLATE (GstGLTestSrc, gst_gl_test_src, GstPushSrc, GST_TYPE_PUSH_SRC);
+
+
+static void gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc,
+    int pattern_type);
+static void gst_gl_test_src_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_gl_test_src_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static gboolean gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps);
+static void gst_gl_test_src_src_fixate (GstPad * pad, GstCaps * caps);
+
+static gboolean gst_gl_test_src_is_seekable (GstBaseSrc * psrc);
+static gboolean gst_gl_test_src_do_seek (GstBaseSrc * bsrc,
+    GstSegment * segment);
+static gboolean gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query);
+
+static void gst_gl_test_src_get_times (GstBaseSrc * basesrc,
+    GstBuffer * buffer, GstClockTime * start, GstClockTime * end);
+static GstFlowReturn gst_gl_test_src_create (GstPushSrc * psrc,
+    GstBuffer ** buffer);
+static gboolean gst_gl_test_src_start (GstBaseSrc * basesrc);
+static gboolean gst_gl_test_src_stop (GstBaseSrc * basesrc);
+
+#define GST_TYPE_GL_TEST_SRC_PATTERN (gst_gl_test_src_pattern_get_type ())
+static GType
+gst_gl_test_src_pattern_get_type (void)
+{
+  static GType gl_test_src_pattern_type = 0;
+  static const GEnumValue pattern_types[] = {
+    {GST_GL_TEST_SRC_SMPTE, "SMPTE 100% color bars", "smpte"},
+    {GST_GL_TEST_SRC_SNOW, "Random (television snow)", "snow"},
+    {GST_GL_TEST_SRC_BLACK, "100% Black", "black"},
+    {GST_GL_TEST_SRC_WHITE, "100% White", "white"},
+    {GST_GL_TEST_SRC_RED, "Red", "red"},
+    {GST_GL_TEST_SRC_GREEN, "Green", "green"},
+    {GST_GL_TEST_SRC_BLUE, "Blue", "blue"},
+    {GST_GL_TEST_SRC_CHECKERS1, "Checkers 1px", "checkers-1"},
+    {GST_GL_TEST_SRC_CHECKERS2, "Checkers 2px", "checkers-2"},
+    {GST_GL_TEST_SRC_CHECKERS4, "Checkers 4px", "checkers-4"},
+    {GST_GL_TEST_SRC_CHECKERS8, "Checkers 8px", "checkers-8"},
+    {GST_GL_TEST_SRC_CIRCULAR, "Circular", "circular"},
+    {GST_GL_TEST_SRC_BLINK, "Blink", "blink"},
+    {0, NULL, NULL}
+  };
+
+  if (!gl_test_src_pattern_type) {
+    gl_test_src_pattern_type =
+        g_enum_register_static ("GstGLTestSrcPattern", pattern_types);
+  }
+  return gl_test_src_pattern_type;
+}
+
+static void
+gst_gl_test_src_base_init (gpointer g_class)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
+
+  gst_element_class_set_details (element_class, &gl_test_src_details);
+
+  gst_element_class_add_pad_template (element_class,
+      gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+          gst_caps_from_string (GST_GL_VIDEO_CAPS)));
+}
+
+static void
+gst_gl_test_src_class_init (GstGLTestSrcClass * klass)
+{
+  GObjectClass *gobject_class;
+  GstBaseSrcClass *gstbasesrc_class;
+  GstPushSrcClass *gstpushsrc_class;
+
+  GST_DEBUG_CATEGORY_INIT (gl_test_src_debug, "gltestsrc", 0,
+      "Video Test Source");
+
+  gobject_class = (GObjectClass *) klass;
+  gstbasesrc_class = (GstBaseSrcClass *) klass;
+  gstpushsrc_class = (GstPushSrcClass *) klass;
+
+  gobject_class->set_property = gst_gl_test_src_set_property;
+  gobject_class->get_property = gst_gl_test_src_get_property;
+
+  g_object_class_install_property (gobject_class, PROP_PATTERN,
+      g_param_spec_enum ("pattern", "Pattern",
+          "Type of test pattern to generate", GST_TYPE_GL_TEST_SRC_PATTERN,
+          GST_GL_TEST_SRC_SMPTE, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class,
+      PROP_TIMESTAMP_OFFSET, g_param_spec_int64 ("timestamp-offset",
+          "Timestamp offset",
+          "An offset added to timestamps set on buffers (in ns)", G_MININT64,
+          G_MAXINT64, 0, G_PARAM_READWRITE));
+  g_object_class_install_property (gobject_class, PROP_IS_LIVE,
+      g_param_spec_boolean ("is-live", "Is Live",
+          "Whether to act as a live source", FALSE, G_PARAM_READWRITE));
+
+  gstbasesrc_class->set_caps = gst_gl_test_src_setcaps;
+  gstbasesrc_class->is_seekable = gst_gl_test_src_is_seekable;
+  gstbasesrc_class->do_seek = gst_gl_test_src_do_seek;
+  gstbasesrc_class->query = gst_gl_test_src_query;
+  gstbasesrc_class->get_times = gst_gl_test_src_get_times;
+  gstbasesrc_class->start = gst_gl_test_src_start;
+  gstbasesrc_class->stop = gst_gl_test_src_stop;
+
+  gstpushsrc_class->create = gst_gl_test_src_create;
+}
+
+static void
+gst_gl_test_src_init (GstGLTestSrc * src, GstGLTestSrcClass * g_class)
+{
+  GstPad *pad = GST_BASE_SRC_PAD (src);
+
+  gst_pad_set_fixatecaps_function (pad, gst_gl_test_src_src_fixate);
+
+  gst_gl_test_src_set_pattern (src, GST_GL_TEST_SRC_SMPTE);
+
+  src->timestamp_offset = 0;
+
+  /* we operate in time */
+  gst_base_src_set_format (GST_BASE_SRC (src), GST_FORMAT_TIME);
+  gst_base_src_set_live (GST_BASE_SRC (src), FALSE);
+}
+
+static void
+gst_gl_test_src_src_fixate (GstPad * pad, GstCaps * caps)
+{
+  GstStructure *structure;
+
+  GST_DEBUG ("fixate");
+
+  structure = gst_caps_get_structure (caps, 0);
+
+  gst_structure_fixate_field_nearest_int (structure, "width", 320);
+  gst_structure_fixate_field_nearest_int (structure, "height", 240);
+  gst_structure_fixate_field_nearest_fraction (structure, "framerate", 30, 1);
+}
+
+static void
+gst_gl_test_src_set_pattern (GstGLTestSrc * gltestsrc, int pattern_type)
+{
+  gltestsrc->pattern_type = pattern_type;
+
+  GST_DEBUG_OBJECT (gltestsrc, "setting pattern to %d", pattern_type);
+
+  switch (pattern_type) {
+    case GST_GL_TEST_SRC_SMPTE:
+      gltestsrc->make_image = gst_gl_test_src_smpte;
+      break;
+    case GST_GL_TEST_SRC_SNOW:
+      gltestsrc->make_image = gst_gl_test_src_snow;
+      break;
+    case GST_GL_TEST_SRC_BLACK:
+      gltestsrc->make_image = gst_gl_test_src_black;
+      break;
+    case GST_GL_TEST_SRC_WHITE:
+      gltestsrc->make_image = gst_gl_test_src_white;
+      break;
+    case GST_GL_TEST_SRC_RED:
+      gltestsrc->make_image = gst_gl_test_src_red;
+      break;
+    case GST_GL_TEST_SRC_GREEN:
+      gltestsrc->make_image = gst_gl_test_src_green;
+      break;
+    case GST_GL_TEST_SRC_BLUE:
+      gltestsrc->make_image = gst_gl_test_src_blue;
+      break;
+    case GST_GL_TEST_SRC_CHECKERS1:
+      gltestsrc->make_image = gst_gl_test_src_checkers1;
+      break;
+    case GST_GL_TEST_SRC_CHECKERS2:
+      gltestsrc->make_image = gst_gl_test_src_checkers2;
+      break;
+    case GST_GL_TEST_SRC_CHECKERS4:
+      gltestsrc->make_image = gst_gl_test_src_checkers4;
+      break;
+    case GST_GL_TEST_SRC_CHECKERS8:
+      gltestsrc->make_image = gst_gl_test_src_checkers8;
+      break;
+    case GST_GL_TEST_SRC_CIRCULAR:
+      gltestsrc->make_image = gst_gl_test_src_circular;
+      break;
+    case GST_GL_TEST_SRC_BLINK:
+      gltestsrc->make_image = gst_gl_test_src_black;
+      break;
+    default:
+      g_assert_not_reached ();
+  }
+}
+
+static void
+gst_gl_test_src_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  GstGLTestSrc *src = GST_GL_TEST_SRC (object);
+
+  switch (prop_id) {
+    case PROP_PATTERN:
+      gst_gl_test_src_set_pattern (src, g_value_get_enum (value));
+      break;
+    case PROP_TIMESTAMP_OFFSET:
+      src->timestamp_offset = g_value_get_int64 (value);
+      break;
+    case PROP_IS_LIVE:
+      gst_base_src_set_live (GST_BASE_SRC (src), g_value_get_boolean (value));
+      break;
+    default:
+      break;
+  }
+}
+
+static void
+gst_gl_test_src_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  GstGLTestSrc *src = GST_GL_TEST_SRC (object);
+
+  switch (prop_id) {
+    case PROP_PATTERN:
+      g_value_set_enum (value, src->pattern_type);
+      break;
+    case PROP_TIMESTAMP_OFFSET:
+      g_value_set_int64 (value, src->timestamp_offset);
+      break;
+    case PROP_IS_LIVE:
+      g_value_set_boolean (value, gst_base_src_is_live (GST_BASE_SRC (src)));
+      break;
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static gboolean
+gst_gl_test_src_parse_caps (const GstCaps * caps,
+    gint * width, gint * height, gint * rate_numerator, gint * rate_denominator)
+{
+  const GstStructure *structure;
+  GstPadLinkReturn ret;
+  const GValue *framerate;
+
+  GST_DEBUG ("parsing caps");
+
+  if (gst_caps_get_size (caps) < 1)
+    return FALSE;
+
+  structure = gst_caps_get_structure (caps, 0);
+
+  ret = gst_structure_get_int (structure, "width", width);
+  ret &= gst_structure_get_int (structure, "height", height);
+  framerate = gst_structure_get_value (structure, "framerate");
+
+  if (framerate) {
+    *rate_numerator = gst_value_get_fraction_numerator (framerate);
+    *rate_denominator = gst_value_get_fraction_denominator (framerate);
+  } else
+    goto no_framerate;
+
+  return ret;
+
+  /* ERRORS */
+no_framerate:
+  {
+    GST_DEBUG ("gltestsrc no framerate given");
+    return FALSE;
+  }
+}
+
+static gboolean
+gst_gl_test_src_setcaps (GstBaseSrc * bsrc, GstCaps * caps)
+{
+  gboolean res;
+  gint width, height, rate_denominator, rate_numerator;
+  GstGLTestSrc *gltestsrc;
+
+  gltestsrc = GST_GL_TEST_SRC (bsrc);
+
+  GST_DEBUG ("setcaps");
+
+  res = gst_gl_test_src_parse_caps (caps, &width, &height,
+      &rate_numerator, &rate_denominator);
+  if (res) {
+    /* looks ok here */
+    gltestsrc->width = width;
+    gltestsrc->height = height;
+    gltestsrc->rate_numerator = rate_numerator;
+    gltestsrc->rate_denominator = rate_denominator;
+    gltestsrc->negotiated = TRUE;
+
+    GST_DEBUG_OBJECT (gltestsrc, "size %dx%d, %d/%d fps",
+        gltestsrc->width, gltestsrc->height,
+        gltestsrc->rate_numerator, gltestsrc->rate_denominator);
+  }
+  return res;
+}
+
+static gboolean
+gst_gl_test_src_query (GstBaseSrc * bsrc, GstQuery * query)
+{
+  gboolean res;
+  GstGLTestSrc *src;
+
+  src = GST_GL_TEST_SRC (bsrc);
+
+  switch (GST_QUERY_TYPE (query)) {
+    case GST_QUERY_CONVERT:
+    {
+      GstFormat src_fmt, dest_fmt;
+      gint64 src_val, dest_val;
+
+      gst_query_parse_convert (query, &src_fmt, &src_val, &dest_fmt, &dest_val);
+      if (src_fmt == dest_fmt) {
+        dest_val = src_val;
+        goto done;
+      }
+
+      switch (src_fmt) {
+        case GST_FORMAT_DEFAULT:
+          switch (dest_fmt) {
+            case GST_FORMAT_TIME:
+              /* frames to time */
+              if (src->rate_numerator) {
+                dest_val = gst_util_uint64_scale (src_val,
+                    src->rate_denominator * GST_SECOND, src->rate_numerator);
+              } else {
+                dest_val = 0;
+              }
+              break;
+            default:
+              goto error;
+          }
+          break;
+        case GST_FORMAT_TIME:
+          switch (dest_fmt) {
+            case GST_FORMAT_DEFAULT:
+              /* time to frames */
+              if (src->rate_numerator) {
+                dest_val = gst_util_uint64_scale (src_val,
+                    src->rate_numerator, src->rate_denominator * GST_SECOND);
+              } else {
+                dest_val = 0;
+              }
+              break;
+            default:
+              goto error;
+          }
+          break;
+        default:
+          goto error;
+      }
+    done:
+      gst_query_set_convert (query, src_fmt, src_val, dest_fmt, dest_val);
+      res = TRUE;
+      break;
+    }
+    default:
+      res = GST_BASE_SRC_CLASS (parent_class)->query (bsrc, query);
+  }
+  return res;
+
+  /* ERROR */
+error:
+  {
+    GST_DEBUG_OBJECT (src, "query failed");
+    return FALSE;
+  }
+}
+
+static void
+gst_gl_test_src_get_times (GstBaseSrc * basesrc, GstBuffer * buffer,
+    GstClockTime * start, GstClockTime * end)
+{
+  /* for live sources, sync on the timestamp of the buffer */
+  if (gst_base_src_is_live (basesrc)) {
+    GstClockTime timestamp = GST_BUFFER_TIMESTAMP (buffer);
+
+    if (GST_CLOCK_TIME_IS_VALID (timestamp)) {
+      /* get duration to calculate end time */
+      GstClockTime duration = GST_BUFFER_DURATION (buffer);
+
+      if (GST_CLOCK_TIME_IS_VALID (duration)) {
+        *end = timestamp + duration;
+      }
+      *start = timestamp;
+    }
+  } else {
+    *start = -1;
+    *end = -1;
+  }
+}
+
+static gboolean
+gst_gl_test_src_do_seek (GstBaseSrc * bsrc, GstSegment * segment)
+{
+  GstClockTime time;
+  GstGLTestSrc *src;
+
+  src = GST_GL_TEST_SRC (bsrc);
+
+  segment->time = segment->start;
+  time = segment->last_stop;
+
+  /* now move to the time indicated */
+  if (src->rate_numerator) {
+    src->n_frames = gst_util_uint64_scale (time,
+        src->rate_numerator, src->rate_denominator * GST_SECOND);
+  } else {
+    src->n_frames = 0;
+  }
+  if (src->rate_numerator) {
+    src->running_time = gst_util_uint64_scale (src->n_frames,
+        src->rate_denominator * GST_SECOND, src->rate_numerator);
+  } else {
+    /* FIXME : Not sure what to set here */
+    src->running_time = 0;
+  }
+
+  g_assert (src->running_time <= time);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gl_test_src_is_seekable (GstBaseSrc * psrc)
+{
+  /* we're seekable... */
+  return TRUE;
+}
+
+static GstFlowReturn
+gst_gl_test_src_create (GstPushSrc * psrc, GstBuffer ** buffer)
+{
+  GstGLTestSrc *src;
+  GstGLBuffer *outbuf;
+
+  //GstFlowReturn res;
+  GstClockTime next_time;
+  GLuint fbo;
+
+  src = GST_GL_TEST_SRC (psrc);
+
+  if (G_UNLIKELY (!src->negotiated))
+    goto not_negotiated;
+
+  /* 0 framerate and we are at the second frame, eos */
+  if (G_UNLIKELY (src->rate_numerator == 0 && src->n_frames == 1))
+    goto eos;
+
+  GST_LOG_OBJECT (src, "creating buffer %dx%d image for frame %d",
+      src->width, src->height, (gint) src->n_frames);
+
+  outbuf = gst_gl_buffer_new (src->display, GST_VIDEO_FORMAT_RGBx,
+      src->width, src->height);
+  gst_buffer_set_caps (GST_BUFFER (outbuf),
+      GST_PAD_CAPS (GST_BASE_SRC_PAD (psrc)));
+
+  gst_gl_display_lock (outbuf->display);
+
+  /* FIXME: This should be part of buffer creation */
+  glGenTextures (1, &outbuf->texture);
+  glBindTexture (GL_TEXTURE_RECTANGLE_ARB, outbuf->texture);
+  glTexImage2D (GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA,
+      outbuf->width, outbuf->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+
+  glGenFramebuffersEXT (1, &fbo);
+  glBindFramebufferEXT (GL_FRAMEBUFFER_EXT, fbo);
+
+  glFramebufferTexture2DEXT (GL_FRAMEBUFFER_EXT,
+      GL_COLOR_ATTACHMENT0_EXT, GL_TEXTURE_RECTANGLE_ARB, outbuf->texture, 0);
+
+  glDrawBuffer (GL_COLOR_ATTACHMENT0_EXT);
+  glReadBuffer (GL_COLOR_ATTACHMENT0_EXT);
+
+  g_assert (glCheckFramebufferStatusEXT (GL_FRAMEBUFFER_EXT) ==
+      GL_FRAMEBUFFER_COMPLETE_EXT);
+
+  glViewport (0, 0, outbuf->width, outbuf->height);
+
+#if 0
+  glClearColor (0.3, 0.3, 0.3, 1.0);
+  glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+#endif
+  if (src->pattern_type == GST_GL_TEST_SRC_BLINK) {
+    if (src->n_frames & 0x1) {
+      gst_gl_test_src_white (src, outbuf, src->width, src->height);
+    } else {
+      gst_gl_test_src_black (src, outbuf, src->width, src->height);
+    }
+  } else {
+    src->make_image (src, outbuf, src->width, src->height);
+  }
+
+  glFlush ();
+
+  glDeleteFramebuffersEXT (1, &fbo);
+
+  gst_gl_display_unlock (outbuf->display);
+
+  GST_BUFFER_TIMESTAMP (GST_BUFFER (outbuf)) =
+      src->timestamp_offset + src->running_time;
+  GST_BUFFER_OFFSET (GST_BUFFER (outbuf)) = src->n_frames;
+  src->n_frames++;
+  GST_BUFFER_OFFSET_END (GST_BUFFER (outbuf)) = src->n_frames;
+  if (src->rate_numerator) {
+    next_time = gst_util_uint64_scale_int (src->n_frames * GST_SECOND,
+        src->rate_denominator, src->rate_numerator);
+    GST_BUFFER_DURATION (GST_BUFFER (outbuf)) = next_time - src->running_time;
+  } else {
+    next_time = src->timestamp_offset;
+    /* NONE means forever */
+    GST_BUFFER_DURATION (GST_BUFFER (outbuf)) = GST_CLOCK_TIME_NONE;
+  }
+
+  src->running_time = next_time;
+
+  *buffer = GST_BUFFER (outbuf);
+
+  return GST_FLOW_OK;
+
+not_negotiated:
+  {
+    GST_ELEMENT_ERROR (src, CORE, NEGOTIATION, (NULL),
+        ("format wasn't negotiated before get function"));
+    return GST_FLOW_NOT_NEGOTIATED;
+  }
+eos:
+  {
+    GST_DEBUG_OBJECT (src, "eos: 0 framerate, frame %d", (gint) src->n_frames);
+    return GST_FLOW_UNEXPECTED;
+  }
+#if 0
+no_buffer:
+  {
+    GST_DEBUG_OBJECT (src, "could not allocate buffer, reason %s",
+        gst_flow_get_name (res));
+    return res;
+  }
+#endif
+}
+
+static gboolean
+gst_gl_test_src_start (GstBaseSrc * basesrc)
+{
+  GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc);
+  gboolean ret;
+
+  src->running_time = 0;
+  src->n_frames = 0;
+  src->negotiated = FALSE;
+  src->display = gst_gl_display_new ();
+  ret = gst_gl_display_connect (src->display, NULL);
+
+  return ret;
+}
+
+static gboolean
+gst_gl_test_src_stop (GstBaseSrc * basesrc)
+{
+  GstGLTestSrc *src = GST_GL_TEST_SRC (basesrc);
+
+  g_object_unref (src->display);
+
+  return TRUE;
+}