gstreamer/subprojects/gst-plugins-base/ext/gl/effects/gstgleffectidentity.c

/*
 * 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.
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include "../gstgleffects.h"

void
gst_gl_effects_identity (GstGLEffects * effects)
{
  GstGLContext *context = GST_GL_BASE_FILTER (effects)->context;
  GstGLFilter *filter = GST_GL_FILTER (effects);
  GstGLShader *shader;

  shader = g_hash_table_lookup (effects->shaderstable, "identity0");
  if (!shader) {
    GError *error = NULL;

    if (!(shader = gst_gl_shader_new_default (context, &error))) {
      GST_ELEMENT_ERROR (effects, RESOURCE, NOT_FOUND,
          ("Failed to initialize identity shader: %s", error->message), (NULL));
      return;
    }

    g_hash_table_insert (effects->shaderstable, (gchar *) "identity0", shader);
  }
  gst_gl_shader_use (shader);

  gst_gl_filter_render_to_target_with_shader (filter, effects->intexture,
      effects->outtexture, shader);
}