sys/glsink/: Remove code that handles non-texture buffers. Add a

Original commit message from CVS:
* sys/glsink/BUGS:
* sys/glsink/Makefile.am:
* sys/glsink/gstglbuffer.c:
* sys/glsink/gstglbuffer.h:
* sys/glsink/gstglconvert.c:
* sys/glsink/gstgldisplay.c:
* sys/glsink/gstglfilter.c:
* sys/glsink/gstglfilter.h:
* sys/glsink/gstglfilterexample.c:
* sys/glsink/gstgltestsrc.c:
* sys/glsink/gstglupload.c:
* sys/glsink/gstopengl.c:
Remove code that handles non-texture buffers.  Add a
GstGLBufferFormat type that corresponds to how to use the
texture, not the original video format.  Convert gstflfilter.c
into a base class, add glfilterexample and glconvert elements.
* sys/glsink/color_matrix.c:
Minor ramblings about color conversion matrices.

1 files changed, 243 insertions, 0 deletions

diff --git a/sys/glsink/gstglfilterexample.c b/sys/glsink/gstglfilterexample.c
new file mode 100644
index 00000000..6a513b33
--- /dev/null
+++ b/sys/glsink/gstglfilterexample.c
@@ -0,0 +1,243 @@
+/* 
+ * GStreamer
+ * Copyright (C) 2007 David 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <gst/gst.h>
+#include <gst/video/video.h>
+#include <gstglbuffer.h>
+#include <gstglfilter.h>
+#include "glextensions.h"
+#include <string.h>
+
+#define GST_CAT_DEFAULT gst_gl_filter_example_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+#define GST_TYPE_GL_FILTER_EXAMPLE            (gst_gl_filter_example_get_type())
+#define GST_GL_FILTER_EXAMPLE(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_FILTER_EXAMPLE,GstGLFilterExample))
+#define GST_IS_GL_FILTER_EXAMPLE(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_FILTER_EXAMPLE))
+#define GST_GL_FILTER_EXAMPLE_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_FILTER_EXAMPLE,GstGLFilterExampleClass))
+#define GST_IS_GL_FILTER_EXAMPLE_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_FILTER_EXAMPLE))
+#define GST_GL_FILTER_EXAMPLE_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_FILTER_EXAMPLE,GstGLFilterExampleClass))
+typedef struct _GstGLFilterExample GstGLFilterExample;
+typedef struct _GstGLFilterExampleClass GstGLFilterExampleClass;
+
+struct _GstGLFilterExample
+{
+  GstGLFilter filter;
+
+  /* < private > */
+
+};
+
+struct _GstGLFilterExampleClass
+{
+  GstGLFilterClass filter_class;
+};
+
+static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
+    "Filter/Effect",
+    "FIXME example filter",
+    "FIXME <fixme@fixme.com>");
+
+#if 0
+#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
+
+static GstStaticPadTemplate gst_gl_filter_example_src_pad_template =
+GST_STATIC_PAD_TEMPLATE ("src",
+    GST_PAD_SRC,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
+    );
+
+static GstStaticPadTemplate gst_gl_filter_example_sink_pad_template =
+GST_STATIC_PAD_TEMPLATE ("sink",
+    GST_PAD_SINK,
+    GST_PAD_ALWAYS,
+    GST_STATIC_CAPS (GST_GL_VIDEO_CAPS)
+    );
+#endif
+
+enum
+{
+  PROP_0
+};
+
+#define DEBUG_INIT(bla) \
+  GST_DEBUG_CATEGORY_INIT (gst_gl_filter_example_debug, "glfilterexample", 0, "glfilterexample element");
+
+GST_BOILERPLATE_FULL (GstGLFilterExample, gst_gl_filter_example, GstGLFilter,
+    GST_TYPE_GL_FILTER, DEBUG_INIT);
+
+static void gst_gl_filter_example_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_gl_filter_example_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void gst_gl_filter_example_reset (GstGLFilterExample * filter);
+static gboolean gst_gl_filter_example_transform (GstGLFilter * filter,
+    GstGLBuffer * outbuf, GstGLBuffer * inbuf);
+static gboolean gst_gl_filter_example_start (GstGLFilter * filter);
+static gboolean gst_gl_filter_example_stop (GstGLFilter * filter);
+
+
+static void
+gst_gl_filter_example_base_init (gpointer klass)
+{
+  GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
+
+  gst_element_class_set_details (element_class, &element_details);
+
+#if 0
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_gl_filter_example_src_pad_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_gl_filter_example_sink_pad_template));
+#endif
+}
+
+static void
+gst_gl_filter_example_class_init (GstGLFilterExampleClass * klass)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gobject_class->set_property = gst_gl_filter_example_set_property;
+  gobject_class->get_property = gst_gl_filter_example_get_property;
+
+  GST_GL_FILTER_CLASS (klass)->transform = gst_gl_filter_example_transform;
+  GST_GL_FILTER_CLASS (klass)->start = gst_gl_filter_example_start;
+  GST_GL_FILTER_CLASS (klass)->stop = gst_gl_filter_example_stop;
+}
+
+static void
+gst_gl_filter_example_init (GstGLFilterExample * filter,
+    GstGLFilterExampleClass * klass)
+{
+  gst_gl_filter_example_reset (filter);
+}
+
+static void
+gst_gl_filter_example_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  //GstGLFilterExample *filter = GST_GL_FILTER_EXAMPLE (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_gl_filter_example_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  //GstGLFilterExample *filter = GST_GL_FILTER_EXAMPLE (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_gl_filter_example_reset (GstGLFilterExample * filter)
+{
+
+}
+
+static gboolean
+gst_gl_filter_example_start (GstGLFilter * _filter)
+{
+  //GstGLFilterExample *filter = GST_GL_FILTER_EXAMPLE(_filter);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gl_filter_example_stop (GstGLFilter * _filter)
+{
+  GstGLFilterExample *filter = GST_GL_FILTER_EXAMPLE (_filter);
+
+  gst_gl_filter_example_reset (filter);
+  return TRUE;
+}
+
+static gboolean
+gst_gl_filter_example_transform (GstGLFilter * filter, GstGLBuffer * outbuf,
+    GstGLBuffer * inbuf)
+{
+  //GstGLFilterExample *example = GST_GL_FILTER_EXAMPLE(filter);
+
+  glDisable (GL_CULL_FACE);
+  glEnableClientState (GL_TEXTURE_COORD_ARRAY);
+
+  glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP);
+  glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP);
+  glTexEnvi (GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
+
+  glColor4f (1, 0, 1, 1);
+
+#define GAIN 0.5
+  {
+    const double matrix[16] = {
+      0, 0, 1.0, 0,
+      0, 1.0, 0, 0,
+      1.0, 0, 0, 0,
+      0, 0, 0, 1
+    };
+
+    glMatrixMode (GL_COLOR);
+    glLoadMatrixd (matrix);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, (1 - GAIN) / 2);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, (1 - GAIN) / 2);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, (1 - GAIN) / 2);
+  }
+
+  glBegin (GL_QUADS);
+  glNormal3f (0, 0, -1);
+  glTexCoord2f (inbuf->width, 0);
+  glVertex3f (0.9, -0.9, 0);
+  glTexCoord2f (0, 0);
+  glVertex3f (-1.0, -1.0, 0);
+  glTexCoord2f (0, inbuf->height);
+  glVertex3f (-1.0, 1.0, 0);
+  glTexCoord2f (inbuf->width, inbuf->height);
+  glVertex3f (1.0, 1.0, 0);
+  glEnd ();
+
+  glFlush ();
+
+  glMatrixMode (GL_COLOR);
+  glLoadIdentity ();
+  glPixelTransferf (GL_POST_COLOR_MATRIX_RED_SCALE, 1.0);
+  glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, 0);
+  glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, 0);
+  glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, 0);
+
+  return TRUE;
+}