| /* |
| * 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, gint width, gint height, GLuint texture) |
| { |
| GstGLShader *shader; |
| GstGLFilter *filter = GST_GL_FILTER (effects); |
| GstGLContext *context = GST_GL_BASE_FILTER (filter)->context; |
| GstGLFuncs *gl = context->gl_vtable; |
| |
| shader = gst_gl_effects_get_fragment_shader (effects, "rgb_to_curve", |
| rgb_to_curve_fragment_source_gles2, rgb_to_curve_fragment_source_opengl); |
| |
| if (!shader) |
| return; |
| |
| #if GST_GL_HAVE_OPENGL |
| if (USING_OPENGL (context)) { |
| gl->MatrixMode (GL_PROJECTION); |
| gl->LoadIdentity (); |
| } |
| #endif |
| |
| gst_gl_shader_use (shader); |
| |
| if (effects->curve[curve_index] == 0) { |
| /* this parameters are needed to have a right, predictable, mapping */ |
| gl->GenTextures (1, &effects->curve[curve_index]); |
| #if GST_GL_HAVE_OPENGL |
| if (USING_OPENGL (context)) { |
| gl->Enable (GL_TEXTURE_1D); |
| gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]); |
| gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
| gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
| gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_S, GL_CLAMP); |
| gl->TexParameteri (GL_TEXTURE_1D, GL_TEXTURE_WRAP_T, GL_CLAMP); |
| |
| gl->TexImage1D (GL_TEXTURE_1D, 0, GL_RGB, |
| curve->width, 0, GL_RGB, GL_UNSIGNED_BYTE, curve->pixel_data); |
| |
| gl->Disable (GL_TEXTURE_1D); |
| } |
| #endif |
| if (USING_GLES2 (context) || USING_OPENGL3 (context)) { |
| gl->Enable (GL_TEXTURE_2D); |
| 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); |
| gl->Disable (GL_TEXTURE_2D); |
| } |
| } |
| |
| gl->ActiveTexture (GL_TEXTURE0); |
| gl->Enable (GL_TEXTURE_2D); |
| gl->BindTexture (GL_TEXTURE_2D, texture); |
| |
| gst_gl_shader_set_uniform_1i (shader, "tex", 0); |
| |
| gl->Disable (GL_TEXTURE_2D); |
| |
| #if GST_GL_HAVE_OPENGL |
| if (USING_OPENGL (context)) { |
| gl->ActiveTexture (GL_TEXTURE1); |
| gl->Enable (GL_TEXTURE_1D); |
| gl->BindTexture (GL_TEXTURE_1D, effects->curve[curve_index]); |
| |
| gst_gl_shader_set_uniform_1i (shader, "curve", 1); |
| |
| gl->Disable (GL_TEXTURE_1D); |
| } |
| #endif |
| if (USING_GLES2 (context) || USING_OPENGL3 (context)) { |
| gl->ActiveTexture (GL_TEXTURE1); |
| gl->Enable (GL_TEXTURE_2D); |
| gl->BindTexture (GL_TEXTURE_2D, effects->curve[curve_index]); |
| |
| gst_gl_shader_set_uniform_1i (shader, "curve", 1); |
| |
| gl->Disable (GL_TEXTURE_2D); |
| } |
| |
| gst_gl_filter_draw_texture (filter, texture, width, height); |
| } |
| |
| static void |
| gst_gl_effects_xpro_callback (gint width, gint height, guint texture, |
| gpointer data) |
| { |
| GstGLEffects *effects = GST_GL_EFFECTS (data); |
| |
| gst_gl_effects_rgb_to_curve (effects, &xpro_curve, GST_GL_EFFECTS_CURVE_XPRO, |
| width, height, texture); |
| } |
| |
| void |
| gst_gl_effects_xpro (GstGLEffects * effects) |
| { |
| GstGLFilter *filter = GST_GL_FILTER (effects); |
| |
| gst_gl_filter_render_to_target (filter, TRUE, effects->intexture, |
| effects->outtexture, gst_gl_effects_xpro_callback, effects); |
| } |