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, 253 insertions, 0 deletions

diff --git a/sys/glsink/gstglconvert.c b/sys/glsink/gstglconvert.c
new file mode 100644
index 00000000..57daec5a
--- /dev/null
+++ b/sys/glsink/gstglconvert.c
@@ -0,0 +1,253 @@
+/* 
+ * 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"
+
+#define GST_CAT_DEFAULT gst_gl_convert_debug
+GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
+
+#define GST_TYPE_GL_CONVERT            (gst_gl_convert_get_type())
+#define GST_GL_CONVERT(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_GL_CONVERT,GstGLConvert))
+#define GST_IS_GL_CONVERT(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_GL_CONVERT))
+#define GST_GL_CONVERT_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) ,GST_TYPE_GL_CONVERT,GstGLConvertClass))
+#define GST_IS_GL_CONVERT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) ,GST_TYPE_GL_CONVERT))
+#define GST_GL_CONVERT_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) ,GST_TYPE_GL_CONVERT,GstGLConvertClass))
+typedef struct _GstGLConvert GstGLConvert;
+typedef struct _GstGLConvertClass GstGLConvertClass;
+
+struct _GstGLConvert
+{
+  GstGLFilter filter;
+
+  /* < private > */
+
+};
+
+struct _GstGLConvertClass
+{
+  GstGLFilterClass filter_class;
+};
+
+static const GstElementDetails element_details = GST_ELEMENT_DETAILS ("FIXME",
+    "Filter/Effect",
+    "FIXME GL conversion filter",
+    "FIXME <fixme@fixme.com>");
+
+#if 0
+#define GST_GL_VIDEO_CAPS "video/x-raw-gl"
+
+static GstStaticPadTemplate gst_gl_convert_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_convert_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_convert_debug, "glconvert", 0, "glconvert element");
+
+GST_BOILERPLATE_FULL (GstGLConvert, gst_gl_convert, GstGLFilter,
+    GST_TYPE_GL_FILTER, DEBUG_INIT);
+
+static void gst_gl_convert_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec);
+static void gst_gl_convert_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec);
+
+static void gst_gl_convert_reset (GstGLConvert * filter);
+static gboolean gst_gl_convert_transform (GstGLFilter * filter,
+    GstGLBuffer * outbuf, GstGLBuffer * inbuf);
+static gboolean gst_gl_convert_start (GstGLFilter * _filter);
+static gboolean gst_gl_convert_stop (GstGLFilter * _filter);
+
+
+static void
+gst_gl_convert_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_convert_src_pad_template));
+  gst_element_class_add_pad_template (element_class,
+      gst_static_pad_template_get (&gst_gl_convert_sink_pad_template));
+#endif
+}
+
+static void
+gst_gl_convert_class_init (GstGLConvertClass * klass)
+{
+  GObjectClass *gobject_class;
+
+  gobject_class = (GObjectClass *) klass;
+  gobject_class->set_property = gst_gl_convert_set_property;
+  gobject_class->get_property = gst_gl_convert_get_property;
+
+  GST_GL_FILTER_CLASS (klass)->transform = gst_gl_convert_transform;
+  GST_GL_FILTER_CLASS (klass)->start = gst_gl_convert_start;
+  GST_GL_FILTER_CLASS (klass)->stop = gst_gl_convert_stop;
+}
+
+static void
+gst_gl_convert_init (GstGLConvert * filter, GstGLConvertClass * klass)
+{
+  gst_gl_convert_reset (filter);
+}
+
+static void
+gst_gl_convert_set_property (GObject * object, guint prop_id,
+    const GValue * value, GParamSpec * pspec)
+{
+  //GstGLConvert *filter = GST_GL_CONVERT (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_gl_convert_get_property (GObject * object, guint prop_id,
+    GValue * value, GParamSpec * pspec)
+{
+  //GstGLConvert *filter = GST_GL_CONVERT (object);
+
+  switch (prop_id) {
+    default:
+      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+      break;
+  }
+}
+
+static void
+gst_gl_convert_reset (GstGLConvert * filter)
+{
+
+}
+
+static gboolean
+gst_gl_convert_start (GstGLFilter * _filter)
+{
+  //GstGLConvert *convert = GST_GL_CONVERT(_filter);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gl_convert_stop (GstGLFilter * _filter)
+{
+  GstGLConvert *convert = GST_GL_CONVERT (_filter);
+
+  gst_gl_convert_reset (convert);
+
+  return TRUE;
+}
+
+static gboolean
+gst_gl_convert_transform (GstGLFilter * filter, GstGLBuffer * outbuf,
+    GstGLBuffer * inbuf)
+{
+  //GstGLConvert *convert = GST_GL_CONVERT(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);
+
+  if (inbuf->is_yuv) {
+#ifdef GL_POST_COLOR_MATRIX_RED_BIAS
+    const double matrix[16] = {
+      1.16438, 1.6321, -0.00107909, 0,
+      1.13839, -0.813005, -0.39126, 0,
+      1.13839, 0.00112726, 2.01741, 0,
+      0, 0, 0, 1
+    };
+
+    GST_DEBUG ("applying YUV->RGB conversion");
+
+    glMatrixMode (GL_COLOR);
+    glLoadMatrixd (matrix);
+
+    /* same */
+    glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, -0.873494);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, 0.531435);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, -1.08629);
+#else
+    g_assert_not_reached ();
+#endif
+  }
+
+  glColor4f (1, 0, 1, 1);
+
+  glBegin (GL_QUADS);
+  glNormal3f (0, 0, -1);
+  glTexCoord2f (inbuf->width, 0);
+  glVertex3f (1.0, -1.0, 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 ();
+
+  if (inbuf->is_yuv) {
+#ifdef GL_POST_COLOR_MATRIX_RED_BIAS
+    glMatrixMode (GL_COLOR);
+    glLoadIdentity ();
+
+    glPixelTransferf (GL_POST_COLOR_MATRIX_RED_BIAS, 0);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_GREEN_BIAS, 0);
+    glPixelTransferf (GL_POST_COLOR_MATRIX_BLUE_BIAS, 0);
+#else
+    g_assert_not_reached ();
+#endif
+  }
+
+  return TRUE;
+}