gl: most of opengl plugin has moved to -base, keep mixer bits in -bad for now

Since they rely on GstVideoAggregator.

Fix detection of things again, and Meson

1 files changed, 0 insertions, 832 deletions

diff --git a/ext/gl/gstgloverlay.c b/ext/gl/gstgloverlay.c
deleted file mode 100644
index 864ea64da..000000000
--- a/ext/gl/gstgloverlay.c
+++ /dev/null
@@ -1,832 +0,0 @@
-/*
- * GStreamer
- * Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
- *
- * 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., 51 Franklin St, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-/**
- * SECTION:element-gloverlay
- * @title: gloverlay
- *
- * Overlay GL video texture with a PNG image
- *
- * ## Examples
- * |[
- * gst-launch-1.0 videotestsrc ! gloverlay location=image.jpg ! glimagesink
- * ]|
- * FBO (Frame Buffer Object) is required.
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
-
-#include <gst/base/gsttypefindhelper.h>
-#include <gst/gl/gstglconfig.h>
-
-#include "gstgloverlay.h"
-#include "effects/gstgleffectssources.h"
-#include "gstglutils.h"
-
-#include <stdio.h>
-#include <stdlib.h>
-#ifdef _MSC_VER
-#define HAVE_BOOLEAN
-#endif
-#include <jpeglib.h>
-#include <png.h>
-
-#if PNG_LIBPNG_VER >= 10400
-#define int_p_NULL         NULL
-#define png_infopp_NULL    NULL
-#endif
-
-#define GST_CAT_DEFAULT gst_gl_overlay_debug
-GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
-
-#define DEBUG_INIT \
-  GST_DEBUG_CATEGORY_INIT (gst_gl_overlay_debug, "gloverlay", 0, "gloverlay element");
-
-#define gst_gl_overlay_parent_class parent_class
-G_DEFINE_TYPE_WITH_CODE (GstGLOverlay, gst_gl_overlay, GST_TYPE_GL_FILTER,
-    DEBUG_INIT);
-
-static gboolean gst_gl_overlay_set_caps (GstGLFilter * filter,
-    GstCaps * incaps, GstCaps * outcaps);
-
-static void gst_gl_overlay_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec);
-static void gst_gl_overlay_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec);
-
-static void gst_gl_overlay_before_transform (GstBaseTransform * trans,
-    GstBuffer * outbuf);
-static gboolean gst_gl_overlay_filter_texture (GstGLFilter * filter,
-    GstGLMemory * in_tex, GstGLMemory * out_tex);
-
-static gboolean gst_gl_overlay_load_png (GstGLOverlay * overlay, FILE * fp);
-static gboolean gst_gl_overlay_load_jpeg (GstGLOverlay * overlay, FILE * fp);
-
-enum
-{
-  PROP_0,
-  PROP_LOCATION,
-  PROP_OFFSET_X,
-  PROP_OFFSET_Y,
-  PROP_RELATIVE_X,
-  PROP_RELATIVE_Y,
-  PROP_OVERLAY_WIDTH,
-  PROP_OVERLAY_HEIGHT,
-  PROP_ALPHA
-};
-
-/* *INDENT-OFF* */
-/* vertex source */
-static const gchar *overlay_v_src =
-    "attribute vec4 a_position;\n"
-    "attribute vec2 a_texcoord;\n"
-    "varying vec2 v_texcoord;\n"
-    "void main()\n"
-    "{\n"
-    "   gl_Position = a_position;\n"
-    "   v_texcoord = a_texcoord;\n"
-    "}";
-
-/* fragment source */
-static const gchar *overlay_f_src =
-    "#ifdef GL_ES\n"
-    "precision mediump float;\n"
-    "#endif\n"
-    "uniform sampler2D texture;\n"
-    "uniform float alpha;\n"
-    "varying vec2 v_texcoord;\n"
-    "void main()\n"
-    "{\n"
-    "  vec4 rgba = texture2D( texture, v_texcoord );\n"
-    "  gl_FragColor = vec4(rgba.rgb, rgba.a * alpha);\n"
-    "}\n";
-/* *INDENT-ON* */
-
-/* init resources that need a gl context */
-static gboolean
-gst_gl_overlay_gl_start (GstGLBaseFilter * base_filter)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (base_filter);
-
-  if (!GST_GL_BASE_FILTER_CLASS (parent_class)->gl_start (base_filter))
-    return FALSE;
-
-  return gst_gl_context_gen_shader (base_filter->context, overlay_v_src,
-      overlay_f_src, &overlay->shader);
-}
-
-/* free resources that need a gl context */
-static void
-gst_gl_overlay_gl_stop (GstGLBaseFilter * base_filter)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (base_filter);
-  const GstGLFuncs *gl = base_filter->context->gl_vtable;
-
-  if (overlay->shader) {
-    gst_object_unref (overlay->shader);
-    overlay->shader = NULL;
-  }
-
-  if (overlay->image_memory) {
-    gst_memory_unref ((GstMemory *) overlay->image_memory);
-    overlay->image_memory = NULL;
-  }
-
-  if (overlay->vao) {
-    gl->DeleteVertexArrays (1, &overlay->vao);
-    overlay->vao = 0;
-  }
-
-  if (overlay->vbo) {
-    gl->DeleteBuffers (1, &overlay->vbo);
-    overlay->vbo = 0;
-  }
-
-  if (overlay->vbo_indices) {
-    gl->DeleteBuffers (1, &overlay->vbo_indices);
-    overlay->vbo_indices = 0;
-  }
-
-  if (overlay->overlay_vao) {
-    gl->DeleteVertexArrays (1, &overlay->overlay_vao);
-    overlay->overlay_vao = 0;
-  }
-
-  if (overlay->overlay_vbo) {
-    gl->DeleteBuffers (1, &overlay->overlay_vbo);
-    overlay->overlay_vbo = 0;
-  }
-
-  GST_GL_BASE_FILTER_CLASS (parent_class)->gl_stop (base_filter);
-}
-
-static void
-gst_gl_overlay_class_init (GstGLOverlayClass * klass)
-{
-  GObjectClass *gobject_class;
-  GstElementClass *element_class;
-
-  gobject_class = (GObjectClass *) klass;
-  element_class = GST_ELEMENT_CLASS (klass);
-
-  gst_gl_filter_add_rgba_pad_templates (GST_GL_FILTER_CLASS (klass));
-
-  gobject_class->set_property = gst_gl_overlay_set_property;
-  gobject_class->get_property = gst_gl_overlay_get_property;
-
-  GST_GL_BASE_FILTER_CLASS (klass)->gl_start = gst_gl_overlay_gl_start;
-  GST_GL_BASE_FILTER_CLASS (klass)->gl_stop = gst_gl_overlay_gl_stop;
-
-  GST_GL_FILTER_CLASS (klass)->set_caps = gst_gl_overlay_set_caps;
-  GST_GL_FILTER_CLASS (klass)->filter_texture = gst_gl_overlay_filter_texture;
-
-  GST_BASE_TRANSFORM_CLASS (klass)->before_transform =
-      GST_DEBUG_FUNCPTR (gst_gl_overlay_before_transform);
-
-  g_object_class_install_property (gobject_class, PROP_LOCATION,
-      g_param_spec_string ("location", "location",
-          "Location of image file to overlay", NULL, GST_PARAM_CONTROLLABLE
-          | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_OFFSET_X,
-      g_param_spec_int ("offset-x", "X Offset",
-          "For positive value, horizontal offset of overlay image in pixels from"
-          " left of video image. For negative value, horizontal offset of overlay"
-          " image in pixels from right of video image", G_MININT, G_MAXINT, 0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_OFFSET_Y,
-      g_param_spec_int ("offset-y", "Y Offset",
-          "For positive value, vertical offset of overlay image in pixels from"
-          " top of video image. For negative value, vertical offset of overlay"
-          " image in pixels from bottom of video image", G_MININT, G_MAXINT, 0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_RELATIVE_X,
-      g_param_spec_double ("relative-x", "Relative X Offset",
-          "Horizontal offset of overlay image in fractions of video image "
-          "width, from top-left corner of video image", 0.0, 1.0, 0.0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_RELATIVE_Y,
-      g_param_spec_double ("relative-y", "Relative Y Offset",
-          "Vertical offset of overlay image in fractions of video image "
-          "height, from top-left corner of video image", 0.0, 1.0, 0.0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_OVERLAY_WIDTH,
-      g_param_spec_int ("overlay-width", "Overlay Width",
-          "Width of overlay image in pixels (0 = same as overlay image)", 0,
-          G_MAXINT, 0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_OVERLAY_HEIGHT,
-      g_param_spec_int ("overlay-height", "Overlay Height",
-          "Height of overlay image in pixels (0 = same as overlay image)", 0,
-          G_MAXINT, 0,
-          GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING | G_PARAM_READWRITE
-          | G_PARAM_STATIC_STRINGS));
-  g_object_class_install_property (gobject_class, PROP_ALPHA,
-      g_param_spec_double ("alpha", "Alpha", "Global alpha of overlay image",
-          0.0, 1.0, 1.0, GST_PARAM_CONTROLLABLE | GST_PARAM_MUTABLE_PLAYING
-          | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
-
-  gst_element_class_set_metadata (element_class,
-      "Gstreamer OpenGL Overlay", "Filter/Effect/Video",
-      "Overlay GL video texture with a JPEG/PNG image",
-      "Filippo Argiolas <filippo.argiolas@gmail.com>, "
-      "Matthew Waters <matthew@centricular.com>");
-
-  GST_GL_BASE_FILTER_CLASS (klass)->supported_gl_api =
-      GST_GL_API_OPENGL | GST_GL_API_GLES2 | GST_GL_API_OPENGL3;
-}
-
-static void
-gst_gl_overlay_init (GstGLOverlay * overlay)
-{
-  overlay->offset_x = 0;
-  overlay->offset_y = 0;
-
-  overlay->relative_x = 0.0;
-  overlay->relative_y = 0.0;
-
-  overlay->overlay_width = 0;
-  overlay->overlay_height = 0;
-
-  overlay->alpha = 1.0;
-}
-
-static void
-gst_gl_overlay_set_property (GObject * object, guint prop_id,
-    const GValue * value, GParamSpec * pspec)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (object);
-
-  switch (prop_id) {
-    case PROP_LOCATION:
-      g_free (overlay->location);
-      overlay->location_has_changed = TRUE;
-      overlay->location = g_value_dup_string (value);
-      break;
-    case PROP_OFFSET_X:
-      overlay->offset_x = g_value_get_int (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_OFFSET_Y:
-      overlay->offset_y = g_value_get_int (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_RELATIVE_X:
-      overlay->relative_x = g_value_get_double (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_RELATIVE_Y:
-      overlay->relative_y = g_value_get_double (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_OVERLAY_WIDTH:
-      overlay->overlay_width = g_value_get_int (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_OVERLAY_HEIGHT:
-      overlay->overlay_height = g_value_get_int (value);
-      overlay->geometry_change = TRUE;
-      break;
-    case PROP_ALPHA:
-      overlay->alpha = g_value_get_double (value);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static void
-gst_gl_overlay_get_property (GObject * object, guint prop_id,
-    GValue * value, GParamSpec * pspec)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (object);
-
-  switch (prop_id) {
-    case PROP_LOCATION:
-      g_value_set_string (value, overlay->location);
-      break;
-    case PROP_OFFSET_X:
-      g_value_set_int (value, overlay->offset_x);
-      break;
-    case PROP_OFFSET_Y:
-      g_value_set_int (value, overlay->offset_y);
-      break;
-    case PROP_RELATIVE_X:
-      g_value_set_double (value, overlay->relative_x);
-      break;
-    case PROP_RELATIVE_Y:
-      g_value_set_double (value, overlay->relative_y);
-      break;
-    case PROP_OVERLAY_WIDTH:
-      g_value_set_int (value, overlay->overlay_width);
-      break;
-    case PROP_OVERLAY_HEIGHT:
-      g_value_set_int (value, overlay->overlay_height);
-      break;
-    case PROP_ALPHA:
-      g_value_set_double (value, overlay->alpha);
-      break;
-    default:
-      G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
-      break;
-  }
-}
-
-static gboolean
-gst_gl_overlay_set_caps (GstGLFilter * filter, GstCaps * incaps,
-    GstCaps * outcaps)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
-  GstStructure *s = gst_caps_get_structure (incaps, 0);
-  gint width = 0;
-  gint height = 0;
-
-  gst_structure_get_int (s, "width", &width);
-  gst_structure_get_int (s, "height", &height);
-
-  overlay->window_width = width;
-  overlay->window_height = height;
-
-  return TRUE;
-}
-
-static void
-_unbind_buffer (GstGLOverlay * overlay)
-{
-  GstGLFilter *filter = GST_GL_FILTER (overlay);
-  const GstGLFuncs *gl = GST_GL_BASE_FILTER (overlay)->context->gl_vtable;
-
-  gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, 0);
-  gl->BindBuffer (GL_ARRAY_BUFFER, 0);
-
-  gl->DisableVertexAttribArray (filter->draw_attr_position_loc);
-  gl->DisableVertexAttribArray (filter->draw_attr_texture_loc);
-}
-
-static void
-_bind_buffer (GstGLOverlay * overlay, GLuint vbo)
-{
-  GstGLFilter *filter = GST_GL_FILTER (overlay);
-  const GstGLFuncs *gl = GST_GL_BASE_FILTER (overlay)->context->gl_vtable;
-
-  gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, overlay->vbo_indices);
-  gl->BindBuffer (GL_ARRAY_BUFFER, vbo);
-
-  gl->EnableVertexAttribArray (filter->draw_attr_position_loc);
-  gl->EnableVertexAttribArray (filter->draw_attr_texture_loc);
-
-  gl->VertexAttribPointer (filter->draw_attr_position_loc, 3, GL_FLOAT,
-      GL_FALSE, 5 * sizeof (GLfloat), (void *) 0);
-  gl->VertexAttribPointer (filter->draw_attr_texture_loc, 2, GL_FLOAT,
-      GL_FALSE, 5 * sizeof (GLfloat), (void *) (3 * sizeof (GLfloat)));
-}
-
-/* *INDENT-OFF* */
-float v_vertices[] = {
-/*|      Vertex     | TexCoord  |*/
-  -1.0f, -1.0f, 0.0f, 0.0f, 0.0f,
-   1.0f, -1.0f, 0.0f, 1.0f, 0.0f,
-   1.0f,  1.0f, 0.0f, 1.0f, 1.0f,
-  -1.0f,  1.0f, 0.0f, 0.0f, 1.0f,
-};
-
-static const GLushort indices[] = { 0, 1, 2, 0, 2, 3, };
-/* *INDENT-ON* */
-
-static gboolean
-gst_gl_overlay_callback (GstGLFilter * filter, GstGLMemory * in_tex,
-    gpointer stuff)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
-  GstMapInfo map_info;
-  guint image_tex;
-  gboolean memory_mapped = FALSE;
-  const GstGLFuncs *gl = GST_GL_BASE_FILTER (filter)->context->gl_vtable;
-  gboolean ret = FALSE;
-
-#if GST_GL_HAVE_OPENGL
-  if (gst_gl_context_get_gl_api (GST_GL_BASE_FILTER (filter)->context) &
-      GST_GL_API_OPENGL) {
-
-    gl->MatrixMode (GL_PROJECTION);
-    gl->LoadIdentity ();
-  }
-#endif
-
-  gl->ActiveTexture (GL_TEXTURE0);
-  gl->BindTexture (GL_TEXTURE_2D, gst_gl_memory_get_texture_id (in_tex));
-
-  gst_gl_shader_use (overlay->shader);
-
-  gst_gl_shader_set_uniform_1f (overlay->shader, "alpha", 1.0f);
-  gst_gl_shader_set_uniform_1i (overlay->shader, "texture", 0);
-
-  filter->draw_attr_position_loc =
-      gst_gl_shader_get_attribute_location (overlay->shader, "a_position");
-  filter->draw_attr_texture_loc =
-      gst_gl_shader_get_attribute_location (overlay->shader, "a_texcoord");
-
-  gst_gl_filter_draw_fullscreen_quad (filter);
-
-  if (!overlay->image_memory)
-    goto out;
-
-  if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
-          GST_MAP_READ | GST_MAP_GL) || map_info.data == NULL)
-    goto out;
-
-  memory_mapped = TRUE;
-  image_tex = *(guint *) map_info.data;
-
-  if (!overlay->overlay_vbo) {
-    if (gl->GenVertexArrays) {
-      gl->GenVertexArrays (1, &overlay->overlay_vao);
-      gl->BindVertexArray (overlay->overlay_vao);
-    }
-
-    gl->GenBuffers (1, &overlay->vbo_indices);
-    gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, overlay->vbo_indices);
-    gl->BufferData (GL_ELEMENT_ARRAY_BUFFER, sizeof (indices), indices,
-        GL_STATIC_DRAW);
-
-    gl->GenBuffers (1, &overlay->overlay_vbo);
-    gl->BindBuffer (GL_ARRAY_BUFFER, overlay->overlay_vbo);
-    gl->BindBuffer (GL_ELEMENT_ARRAY_BUFFER, overlay->vbo_indices);
-    overlay->geometry_change = TRUE;
-  }
-
-  if (gl->GenVertexArrays) {
-    gl->BindVertexArray (overlay->overlay_vao);
-  }
-
-  if (overlay->geometry_change) {
-    gint render_width, render_height;
-    gfloat x, y, image_width, image_height;
-
-    /* *INDENT-OFF* */
-    float vertices[] = {
-     -1.0f, -1.0f, 0.0f, 0.0f, 0.0f,
-      1.0f, -1.0f, 0.0f, 1.0f, 0.0f,
-      1.0f,  1.0f, 0.0f, 1.0f, 1.0f,
-     -1.0f,  1.0f, 0.0f, 0.0,  1.0f,
-    };
-    /* *INDENT-ON* */
-
-    /* scale from [0, 1] -> [-1, 1] */
-    x = ((gfloat) overlay->offset_x / (gfloat) overlay->window_width +
-        overlay->relative_x) * 2.0f - 1.0;
-    y = ((gfloat) overlay->offset_y / (gfloat) overlay->window_height +
-        overlay->relative_y) * 2.0f - 1.0;
-    /* scale from [0, 1] -> [0, 2] */
-    render_width =
-        overlay->overlay_width >
-        0 ? overlay->overlay_width : overlay->image_width;
-    render_height =
-        overlay->overlay_height >
-        0 ? overlay->overlay_height : overlay->image_height;
-    image_width =
-        ((gfloat) render_width / (gfloat) overlay->window_width) * 2.0f;
-    image_height =
-        ((gfloat) render_height / (gfloat) overlay->window_height) * 2.0f;
-
-    vertices[0] = vertices[15] = x;
-    vertices[5] = vertices[10] = x + image_width;
-    vertices[1] = vertices[6] = y;
-    vertices[11] = vertices[16] = y + image_height;
-
-    gl->BufferData (GL_ARRAY_BUFFER, 4 * 5 * sizeof (GLfloat), vertices,
-        GL_STATIC_DRAW);
-  }
-
-  _bind_buffer (overlay, overlay->overlay_vbo);
-
-  gl->BindTexture (GL_TEXTURE_2D, image_tex);
-  gst_gl_shader_set_uniform_1f (overlay->shader, "alpha", overlay->alpha);
-
-  gl->Enable (GL_BLEND);
-  gl->BlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-  gl->BlendEquation (GL_FUNC_ADD);
-
-  gl->DrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, 0);
-
-  gl->Disable (GL_BLEND);
-  ret = TRUE;
-
-out:
-  if (gl->GenVertexArrays)
-    gl->BindVertexArray (0);
-  _unbind_buffer (overlay);
-
-  gst_gl_context_clear_shader (GST_GL_BASE_FILTER (filter)->context);
-
-  if (memory_mapped)
-    gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
-
-  overlay->geometry_change = FALSE;
-
-  return ret;
-}
-
-static gboolean
-load_file (GstGLOverlay * overlay)
-{
-  FILE *fp;
-  guint8 buff[16];
-  gsize n_read;
-  GstCaps *caps;
-  GstStructure *structure;
-  gboolean success = FALSE;
-
-  if (overlay->location == NULL)
-    return TRUE;
-
-  if ((fp = fopen (overlay->location, "rb")) == NULL) {
-    GST_ELEMENT_ERROR (overlay, RESOURCE, NOT_FOUND, ("Can't open file"),
-        ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  n_read = fread (buff, 1, sizeof (buff), fp);
-  if (n_read != sizeof (buff)) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE, ("Can't read file header"),
-        ("File: %s", overlay->location));
-    goto out;
-  }
-
-  caps = gst_type_find_helper_for_data (GST_OBJECT (overlay), buff,
-      sizeof (buff), NULL);
-
-  if (caps == NULL) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE, ("Can't find file type"),
-        ("File: %s", overlay->location));
-    goto out;
-  }
-
-  fseek (fp, 0, SEEK_SET);
-
-  structure = gst_caps_get_structure (caps, 0);
-  if (gst_structure_has_name (structure, "image/jpeg")) {
-    success = gst_gl_overlay_load_jpeg (overlay, fp);
-  } else if (gst_structure_has_name (structure, "image/png")) {
-    success = gst_gl_overlay_load_png (overlay, fp);
-  } else {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE, ("Image type not supported"),
-        ("File: %s", overlay->location));
-  }
-
-out:
-  fclose (fp);
-  gst_caps_replace (&caps, NULL);
-
-  return success;
-}
-
-static gboolean
-gst_gl_overlay_filter_texture (GstGLFilter * filter, GstGLMemory * in_tex,
-    GstGLMemory * out_tex)
-{
-  GstGLOverlay *overlay = GST_GL_OVERLAY (filter);
-
-  if (overlay->location_has_changed) {
-    if (overlay->image_memory) {
-      gst_memory_unref ((GstMemory *) overlay->image_memory);
-      overlay->image_memory = NULL;
-    }
-
-    if (!load_file (overlay))
-      return FALSE;
-
-    overlay->location_has_changed = FALSE;
-  }
-
-  gst_gl_filter_render_to_target (filter, in_tex, out_tex,
-      gst_gl_overlay_callback, overlay);
-
-  return TRUE;
-}
-
-static void
-gst_gl_overlay_before_transform (GstBaseTransform * trans, GstBuffer * outbuf)
-{
-  GstClockTime stream_time;
-
-  stream_time = gst_segment_to_stream_time (&trans->segment, GST_FORMAT_TIME,
-      GST_BUFFER_TIMESTAMP (outbuf));
-
-  if (GST_CLOCK_TIME_IS_VALID (stream_time))
-    gst_object_sync_values (GST_OBJECT (trans), stream_time);
-}
-
-static void
-user_warning_fn (png_structp png_ptr, png_const_charp warning_msg)
-{
-  g_warning ("%s\n", warning_msg);
-}
-
-static gboolean
-gst_gl_overlay_load_jpeg (GstGLOverlay * overlay, FILE * fp)
-{
-  GstGLBaseMemoryAllocator *mem_allocator;
-  GstGLVideoAllocationParams *params;
-  GstVideoInfo v_info;
-  GstVideoAlignment v_align;
-  GstMapInfo map_info;
-  struct jpeg_decompress_struct cinfo;
-  struct jpeg_error_mgr jerr;
-  JSAMPROW j;
-  int i;
-
-  jpeg_create_decompress (&cinfo);
-  cinfo.err = jpeg_std_error (&jerr);
-  jpeg_stdio_src (&cinfo, fp);
-  jpeg_read_header (&cinfo, TRUE);
-  jpeg_start_decompress (&cinfo);
-  overlay->image_width = cinfo.image_width;
-  overlay->image_height = cinfo.image_height;
-
-  if (cinfo.num_components == 1)
-    gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_Y444,
-        overlay->image_width, overlay->image_height);
-  else
-    gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGB,
-        overlay->image_width, overlay->image_height);
-
-  gst_video_alignment_reset (&v_align);
-  v_align.stride_align[0] = 32 - 1;
-  gst_video_info_align (&v_info, &v_align);
-
-  mem_allocator =
-      GST_GL_BASE_MEMORY_ALLOCATOR (gst_gl_memory_allocator_get_default
-      (GST_GL_BASE_FILTER (overlay)->context));
-  params =
-      gst_gl_video_allocation_params_new (GST_GL_BASE_FILTER (overlay)->context,
-      NULL, &v_info, 0, &v_align, GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);
-  overlay->image_memory = (GstGLMemory *)
-      gst_gl_base_memory_alloc (mem_allocator,
-      (GstGLAllocationParams *) params);
-  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
-  gst_object_unref (mem_allocator);
-
-  if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
-          GST_MAP_WRITE)) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE, ("failed to map memory"),
-        ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  for (i = 0; i < overlay->image_height; ++i) {
-    j = map_info.data + v_info.stride[0] * i;
-    jpeg_read_scanlines (&cinfo, &j, 1);
-  }
-  jpeg_finish_decompress (&cinfo);
-  jpeg_destroy_decompress (&cinfo);
-  gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
-
-  return TRUE;
-}
-
-static gboolean
-gst_gl_overlay_load_png (GstGLOverlay * overlay, FILE * fp)
-{
-  GstGLBaseMemoryAllocator *mem_allocator;
-  GstGLVideoAllocationParams *params;
-  GstVideoInfo v_info;
-  GstMapInfo map_info;
-
-  png_structp png_ptr;
-  png_infop info_ptr;
-  png_uint_32 width = 0;
-  png_uint_32 height = 0;
-  gint bit_depth = 0;
-  gint color_type = 0;
-  gint interlace_type = 0;
-  guint y = 0;
-  guchar **rows = NULL;
-  gint filler;
-  png_byte magic[8];
-  gint n_read;
-
-  if (!GST_GL_BASE_FILTER (overlay)->context)
-    return FALSE;
-
-  /* Read magic number */
-  n_read = fread (magic, 1, sizeof (magic), fp);
-  if (n_read != sizeof (magic)) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("can't read PNG magic number"), ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  /* Check for valid magic number */
-  if (png_sig_cmp (magic, 0, sizeof (magic))) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("not a valid PNG image"), ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  png_ptr = png_create_read_struct (PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
-
-  if (png_ptr == NULL) {
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("failed to initialize the png_struct"), ("File: %s",
-            overlay->location));
-    return FALSE;
-  }
-
-  png_set_error_fn (png_ptr, NULL, NULL, user_warning_fn);
-
-  info_ptr = png_create_info_struct (png_ptr);
-  if (info_ptr == NULL) {
-    png_destroy_read_struct (&png_ptr, png_infopp_NULL, png_infopp_NULL);
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("failed to initialize the memory for image information"),
-        ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  png_init_io (png_ptr, fp);
-
-  png_set_sig_bytes (png_ptr, sizeof (magic));
-
-  png_read_info (png_ptr, info_ptr);
-
-  png_get_IHDR (png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
-      &interlace_type, int_p_NULL, int_p_NULL);
-
-  if (color_type == PNG_COLOR_TYPE_RGB) {
-    filler = 0xff;
-    png_set_filler (png_ptr, filler, PNG_FILLER_AFTER);
-    color_type = PNG_COLOR_TYPE_RGB_ALPHA;
-  }
-
-  if (color_type != PNG_COLOR_TYPE_RGB_ALPHA) {
-    png_destroy_read_struct (&png_ptr, png_infopp_NULL, png_infopp_NULL);
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("color type is not rgb"), ("File: %s", overlay->location));
-    return FALSE;
-  }
-
-  overlay->image_width = width;
-  overlay->image_height = height;
-
-  gst_video_info_set_format (&v_info, GST_VIDEO_FORMAT_RGBA, width, height);
-  mem_allocator =
-      GST_GL_BASE_MEMORY_ALLOCATOR (gst_gl_memory_allocator_get_default
-      (GST_GL_BASE_FILTER (overlay)->context));
-  params =
-      gst_gl_video_allocation_params_new (GST_GL_BASE_FILTER (overlay)->context,
-      NULL, &v_info, 0, NULL, GST_GL_TEXTURE_TARGET_2D, GST_GL_RGBA);
-  overlay->image_memory = (GstGLMemory *)
-      gst_gl_base_memory_alloc (mem_allocator,
-      (GstGLAllocationParams *) params);
-  gst_gl_allocation_params_free ((GstGLAllocationParams *) params);
-  gst_object_unref (mem_allocator);
-
-  if (!gst_memory_map ((GstMemory *) overlay->image_memory, &map_info,
-          GST_MAP_WRITE)) {
-    png_destroy_read_struct (&png_ptr, &info_ptr, png_infopp_NULL);
-    GST_ELEMENT_ERROR (overlay, STREAM, DECODE,
-        ("failed to map memory"), ("File: %s", overlay->location));
-    return FALSE;
-  }
-  rows = (guchar **) malloc (sizeof (guchar *) * height);
-
-  for (y = 0; y < height; ++y)
-    rows[y] = (guchar *) (map_info.data + y * width * 4);
-
-  png_read_image (png_ptr, rows);
-
-  free (rows);
-  gst_memory_unmap ((GstMemory *) overlay->image_memory, &map_info);
-
-  png_read_end (png_ptr, info_ptr);
-  png_destroy_read_struct (&png_ptr, &info_ptr, png_infopp_NULL);
-
-  return TRUE;
-}