mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-25 01:30:38 +00:00
b3d8e09839
There's no need for the jump to an extra thread in most cases, especially when relying solely on a shader to render. We can use the provided render_to_target() functions to simplify filter writing.
78 lines
2.6 KiB
C
78 lines
2.6 KiB
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"
|
|
#include "gstgleffectscurves.h"
|
|
|
|
static void
|
|
gst_gl_effects_rgb_to_curve (GstGLEffects * effects,
|
|
const GstGLEffectsCurve * curve, gint curve_index, GstGLMemory * in_tex,
|
|
GstGLMemory * out_tex)
|
|
{
|
|
GstGLContext *context = GST_GL_BASE_FILTER (effects)->context;
|
|
GstGLFilter *filter = GST_GL_FILTER (effects);
|
|
const GstGLFuncs *gl = context->gl_vtable;
|
|
GstGLShader *shader;
|
|
|
|
shader = gst_gl_effects_get_fragment_shader (effects, "rgb_to_curve",
|
|
rgb_to_curve_fragment_source_gles2);
|
|
|
|
if (!shader)
|
|
return;
|
|
|
|
#if GST_GL_HAVE_OPENGL
|
|
if (USING_OPENGL (context)) {
|
|
gl->MatrixMode (GL_PROJECTION);
|
|
gl->LoadIdentity ();
|
|
}
|
|
#endif
|
|
|
|
if (effects->curve[curve_index] == 0) {
|
|
/* this parameters are needed to have a right, predictable, mapping */
|
|
gl->GenTextures (1, &effects->curve[curve_index]);
|
|
|
|
gl->BindTexture (GL_TEXTURE_2D, effects->curve[curve_index]);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
|
|
gl->TexParameteri (GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
|
|
|
|
gl->TexImage2D (GL_TEXTURE_2D, 0, GL_RGB,
|
|
curve->width, 1, 0, GL_RGB, GL_UNSIGNED_BYTE, curve->pixel_data);
|
|
}
|
|
|
|
gst_gl_shader_use (shader);
|
|
gl->ActiveTexture (GL_TEXTURE2);
|
|
gl->BindTexture (GL_TEXTURE_2D, effects->curve[curve_index]);
|
|
|
|
gst_gl_shader_set_uniform_1i (shader, "curve", 2);
|
|
|
|
gst_gl_filter_render_to_target_with_shader (filter, in_tex, out_tex, shader);
|
|
}
|
|
|
|
void
|
|
gst_gl_effects_xpro (GstGLEffects * effects)
|
|
{
|
|
gst_gl_effects_rgb_to_curve (effects, &xpro_curve, GST_GL_EFFECTS_CURVE_XPRO,
|
|
effects->intexture, effects->outtexture);
|
|
}
|