/*

 * 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.

 */

#ifndef __GST_GL_EFFECTS_H__

#define __GST_GL_EFFECTS_H__

#include <gst/gl/gstglfilter.h>

#include <gst/gl/gstglfuncs.h>

#include "effects/gstgleffectssources.h"

G_BEGIN_DECLS

#define GST_TYPE_GL_EFFECTS            (gst_gl_effects_get_type())

#define GST_GL_EFFECTS(obj)            (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_EFFECTS,GstGLEffects))

#define GST_IS_GL_EFFECTS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_EFFECTS))

#define GST_GL_EFFECTS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST((klass) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))

#define GST_IS_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , GST_TYPE_GL_EFFECTS))

#define GST_GL_EFFECTS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS((obj) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))

#define USING_OPENGL(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL, 1, 0))

#define USING_OPENGL3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_OPENGL3, 3, 1))

#define USING_GLES(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES, 1, 0))

#define USING_GLES2(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 2, 0))

#define USING_GLES3(context) (gst_gl_context_check_gl_version (context, GST_GL_API_GLES2, 3, 0))

typedef struct _GstGLEffects GstGLEffects;

typedef struct _GstGLEffectsClass GstGLEffectsClass;

typedef struct {

  gint effect;

  guint supported_properties;

  const gchar *filter_name;

  const gchar *filter_longname;

} GstGLEffectsFilterDescriptor;

typedef void (* GstGLEffectProcessFunc) (GstGLEffects *effects);

#define NEEDED_TEXTURES 5

enum {

  GST_GL_EFFECTS_CURVE_HEAT,

  GST_GL_EFFECTS_CURVE_SEPIA,

  GST_GL_EFFECTS_CURVE_XPRO,

  GST_GL_EFFECTS_CURVE_LUMA_XPRO,

  GST_GL_EFFECTS_CURVE_XRAY,

  GST_GL_EFFECTS_N_CURVES

};

struct _GstGLEffects

{

  GstGLFilter filter;

  GstGLEffectProcessFunc effect;

  gint current_effect;

  GstGLMemory *intexture;

  GstGLMemory *midtexture[NEEDED_TEXTURES];

  GstGLMemory *outtexture;

  GLuint curve[GST_GL_EFFECTS_N_CURVES];

  GHashTable *shaderstable;

  gboolean horizontal_swap; /* switch left to right */

  gboolean invert; /* colours */

};

struct _GstGLEffectsClass

{

  GstGLFilterClass filter_class;

  const GstGLEffectsFilterDescriptor *filter_descriptor;

};

GType gst_gl_effects_get_type (void);

gboolean gst_gl_effects_register_filters (GstPlugin *, GstRank);

GstGLShader* gst_gl_effects_get_fragment_shader (GstGLEffects *effects,

    const gchar * shader_name, const gchar * shader_source_gles2);

void gst_gl_effects_identity (GstGLEffects *effects);

void gst_gl_effects_mirror (GstGLEffects *effects);

void gst_gl_effects_squeeze (GstGLEffects *effects);

void gst_gl_effects_stretch (GstGLEffects *effects);

void gst_gl_effects_tunnel (GstGLEffects *effects);

void gst_gl_effects_fisheye (GstGLEffects *effects);

void gst_gl_effects_twirl (GstGLEffects *effects);

void gst_gl_effects_bulge (GstGLEffects *effects);

void gst_gl_effects_square (GstGLEffects *effects);

void gst_gl_effects_heat (GstGLEffects *effects);

void gst_gl_effects_sepia (GstGLEffects *effects);

void gst_gl_effects_xpro (GstGLEffects *effects);

void gst_gl_effects_xray (GstGLEffects *effects);

void gst_gl_effects_luma_xpro (GstGLEffects *effects);

void gst_gl_effects_sin (GstGLEffects *effects);

void gst_gl_effects_glow (GstGLEffects *effects);

void gst_gl_effects_sobel (GstGLEffects *effects);

void gst_gl_effects_blur (GstGLEffects *effects);

void gst_gl_effects_laplacian (GstGLEffects *effects);

G_END_DECLS

#endif /*__GST_GL_EFFECTS_H__ */