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gstreamer/ext/gl/gstopengl.c
Matthew Waters af5b0ee7d0 gl: add glalpha element that is similar to the alpha element 
It performs similarly to the existing alpha element however performs
calculations in floating point rather than with small (guint8) integers
so some differences are to be expected.

https://bugzilla.gnome.org/show_bug.cgi?id=794070
2018-05-05 21:24:25 +10:00

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/*
* GStreamer
* Copyright (C) 2003 Julien Moutte <julien@moutte.net>
* Copyright (C) 2005,2006,2007 David A. Schleef <ds@schleef.org>
* Copyright (C) 2008 Julien Isorce <julien.isorce@gmail.com>
* 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:plugin-opengl
* @title: GstOpengl
*
* Cross-platform OpenGL plugin.
*
* ## Debugging
*
* ## Examples
* |[
* gst-launch-1.0 --gst-debug=gldisplay:3 videotestsrc ! glimagesink
* ]| A debugging pipeline.
|[
* GST_DEBUG=gl*:6 gst-launch-1.0 videotestsrc ! glimagesink
* ]| A debugging pipelines related to shaders.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#undef HAVE_VIDEO_AGGREGATOR_IN_BASE
#include "gstglimagesink.h"
#include "gstgluploadelement.h"
#include "gstgldownloadelement.h"
#include "gstglcolorconvertelement.h"
#include "gstglcolorbalance.h"
#include "gstglfilterbin.h"
#include "gstglsinkbin.h"
#include "gstglsrcbin.h"
#include "gstglfiltercube.h"
#include "gstgleffects.h"
#include "gstglcolorscale.h"
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
#include "gstglmixerbin.h"
#include "gstglvideomixer.h"
#include "gstglstereomix.h"
#endif
#include "gstglfiltershader.h"
#include "gstglfilterapp.h"
#include "gstglstereosplit.h"
#include "gstglviewconvert.h"
#include "gstgltestsrc.h"
#include "gstgldeinterlace.h"
#include "gstglalpha.h"
#ifdef HAVE_GRAPHENE
#include "gstgltransformation.h"
#include "gstglvideoflip.h"
#endif
#if defined(HAVE_JPEG) && defined(HAVE_PNG)
#include "gstgloverlay.h"
#endif
#if GST_GL_HAVE_OPENGL
#include "gstglfilterglass.h"
/* #include "gstglfilterreflectedscreen.h" */
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
#include "gstglmosaic.h"
#endif
#ifdef HAVE_PNG
#include "gstgldifferencematte.h"
/* #include "gstglbumper.h" */
#endif /* HAVE_PNG */
#endif /* GST_GL_HAVE_OPENGL */
#if GST_GL_HAVE_WINDOW_COCOA
/* avoid including Cocoa/CoreFoundation from a C file... */
extern GType gst_ca_opengl_layer_sink_bin_get_type (void);
#endif
#if GST_GL_HAVE_WINDOW_DISPMANX
extern void bcm_host_init (void);
#endif
#if GST_GL_HAVE_WINDOW_X11
#include <X11/Xlib.h>
#endif
#define GST_CAT_DEFAULT gst_gl_gstgl_debug
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
/* Register filters that make up the gstgl plugin */
static gboolean
plugin_init (GstPlugin * plugin)
{
GST_DEBUG_CATEGORY_INIT (gst_gl_gstgl_debug, "gstopengl", 0, "gstopengl");
#if GST_GL_HAVE_WINDOW_DISPMANX
GST_DEBUG ("Initialize BCM host");
bcm_host_init ();
#endif
#if GST_GL_HAVE_WINDOW_X11
if (g_getenv ("GST_GL_XINITTHREADS"))
XInitThreads ();
#endif
if (!gst_element_register (plugin, "glimagesink",
GST_RANK_SECONDARY, gst_gl_image_sink_bin_get_type ())) {
return FALSE;
}
if (!gst_element_register (plugin, "glimagesinkelement",
GST_RANK_NONE, gst_glimage_sink_get_type ())) {
return FALSE;
}
if (!gst_element_register (plugin, "glupload",
GST_RANK_NONE, GST_TYPE_GL_UPLOAD_ELEMENT)) {
return FALSE;
}
if (!gst_element_register (plugin, "gldownload",
GST_RANK_NONE, GST_TYPE_GL_DOWNLOAD_ELEMENT)) {
return FALSE;
}
if (!gst_element_register (plugin, "glcolorconvert",
GST_RANK_NONE, GST_TYPE_GL_COLOR_CONVERT_ELEMENT)) {
return FALSE;
}
if (!gst_element_register (plugin, "glcolorbalance",
GST_RANK_NONE, GST_TYPE_GL_COLOR_BALANCE)) {
return FALSE;
}
if (!gst_element_register (plugin, "glfilterbin",
GST_RANK_NONE, GST_TYPE_GL_FILTER_BIN)) {
return FALSE;
}
if (!gst_element_register (plugin, "glsinkbin",
GST_RANK_NONE, GST_TYPE_GL_SINK_BIN)) {
return FALSE;
}
if (!gst_element_register (plugin, "glsrcbin",
GST_RANK_NONE, GST_TYPE_GL_SRC_BIN)) {
return FALSE;
}
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
if (!gst_element_register (plugin, "glmixerbin",
GST_RANK_NONE, GST_TYPE_GL_MIXER_BIN)) {
return FALSE;
}
#endif
if (!gst_element_register (plugin, "glfiltercube",
GST_RANK_NONE, GST_TYPE_GL_FILTER_CUBE)) {
return FALSE;
}
#ifdef HAVE_GRAPHENE
if (!gst_element_register (plugin, "gltransformation",
GST_RANK_NONE, GST_TYPE_GL_TRANSFORMATION)) {
return FALSE;
}
if (!gst_element_register (plugin, "glvideoflip",
GST_RANK_NONE, GST_TYPE_GL_VIDEO_FLIP)) {
return FALSE;
}
#endif
if (!gst_gl_effects_register_filters (plugin, GST_RANK_NONE)) {
return FALSE;
};
if (!gst_element_register (plugin, "glcolorscale",
GST_RANK_NONE, GST_TYPE_GL_COLORSCALE)) {
return FALSE;
}
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
if (!gst_element_register (plugin, "glvideomixer",
GST_RANK_NONE, gst_gl_video_mixer_bin_get_type ())) {
return FALSE;
}
if (!gst_element_register (plugin, "glvideomixerelement",
GST_RANK_NONE, gst_gl_video_mixer_get_type ())) {
return FALSE;
}
#endif
if (!gst_element_register (plugin, "glshader",
GST_RANK_NONE, gst_gl_filtershader_get_type ())) {
return FALSE;
}
if (!gst_element_register (plugin, "glfilterapp",
GST_RANK_NONE, GST_TYPE_GL_FILTER_APP)) {
return FALSE;
}
if (!gst_element_register (plugin, "glviewconvert",
GST_RANK_NONE, GST_TYPE_GL_VIEW_CONVERT_ELEMENT)) {
return FALSE;
}
if (!gst_element_register (plugin, "glstereosplit",
GST_RANK_NONE, GST_TYPE_GL_STEREOSPLIT)) {
return FALSE;
}
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
if (!gst_element_register (plugin, "glstereomix",
GST_RANK_NONE, GST_TYPE_GL_STEREO_MIX)) {
return FALSE;
}
#endif
if (!gst_element_register (plugin, "gltestsrc",
GST_RANK_NONE, GST_TYPE_GL_TEST_SRC)) {
return FALSE;
}
if (!gst_element_register (plugin, "gldeinterlace",
GST_RANK_NONE, GST_TYPE_GL_DEINTERLACE)) {
return FALSE;
}
if (!gst_element_register (plugin, "glalpha",
GST_RANK_NONE, GST_TYPE_GL_ALPHA)) {
return FALSE;
}
#if defined(HAVE_JPEG) && defined(HAVE_PNG)
if (!gst_element_register (plugin, "gloverlay",
GST_RANK_NONE, gst_gl_overlay_get_type ())) {
return FALSE;
}
#endif
#if GST_GL_HAVE_OPENGL
if (!gst_element_register (plugin, "glfilterglass",
GST_RANK_NONE, GST_TYPE_GL_FILTER_GLASS)) {
return FALSE;
}
#if 0
if (!gst_element_register (plugin, "glfilterreflectedscreen",
GST_RANK_NONE, GST_TYPE_GL_FILTER_REFLECTED_SCREEN)) {
return FALSE;
}
#endif
#ifdef HAVE_VIDEO_AGGREGATOR_IN_BASE
if (!gst_element_register (plugin, "glmosaic",
GST_RANK_NONE, GST_TYPE_GL_MOSAIC)) {
return FALSE;
}
#endif
#ifdef HAVE_PNG
if (!gst_element_register (plugin, "gldifferencematte",
GST_RANK_NONE, gst_gl_differencematte_get_type ())) {
return FALSE;
}
#if 0
if (!gst_element_register (plugin, "glbumper",
GST_RANK_NONE, gst_gl_bumper_get_type ())) {
return FALSE;
}
#endif
#endif /* HAVE_PNG */
#endif /* GST_GL_HAVE_OPENGL */
#if GST_GL_HAVE_WINDOW_COCOA
if (!gst_element_register (plugin, "caopengllayersink",
GST_RANK_NONE, gst_ca_opengl_layer_sink_bin_get_type ())) {
return FALSE;
}
#endif
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
opengl,
"OpenGL plugin",
plugin_init, VERSION, GST_LICENSE, GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)
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