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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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370 lines
12 KiB
C
370 lines
12 KiB
C
/*
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* GStreamer
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* Copyright (C) 2008 Filippo Argiolas <filippo.argiolas@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <gstgleffects.h>
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#define GST_TYPE_GL_EFFECTS (gst_gl_effects_get_type())
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#define GST_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_CAST((obj), GST_TYPE_GL_EFFECTS,GstGLEffects))
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#define GST_IS_GL_EFFECTS(obj) (G_TYPE_CHECK_INSTANCE_TYPE((obj), GST_TYPE_GL_EFFECTS))
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#define GST_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
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#define GST_IS_GL_EFFECTS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE((klass) , GST_TYPE_GL_EFFECTS))
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#define GST_GL_EFFECTS_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS((obj) , GST_TYPE_GL_EFFECTS,GstGLEffectsClass))
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#define GST_CAT_DEFAULT gst_gl_effects_debug
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GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
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#define DEBUG_INIT(bla) \
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GST_DEBUG_CATEGORY_INIT (gst_gl_effects_debug, "gleffects", 0, "gleffects element");
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GST_BOILERPLATE_FULL (GstGLEffects, gst_gl_effects, GstGLFilter,
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GST_TYPE_GL_FILTER, DEBUG_INIT);
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static void gst_gl_effects_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec);
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static void gst_gl_effects_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec);
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static void gst_gl_effects_init_resources (GstGLFilter* filter);
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static void gst_gl_effects_reset_resources (GstGLFilter* filter);
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static gboolean gst_gl_effects_filter (GstGLFilter * filter,
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GstGLBuffer * inbuf, GstGLBuffer * outbuf);
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static const GstElementDetails element_details = GST_ELEMENT_DETAILS (
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"Gstreamer OpenGL Effects",
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"Filter/Effect",
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"GL Shading Language effects",
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"Filippo Argiolas <filippo.argiolas@gmail.com>");
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/* dont' forget to edit the following when a new effect is added */
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typedef enum {
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GST_GL_EFFECT_IDENTITY,
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GST_GL_EFFECT_MIRROR,
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GST_GL_EFFECT_SQUEEZE,
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GST_GL_EFFECT_STRETCH,
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GST_GL_EFFECT_TUNNEL,
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GST_GL_EFFECT_FISHEYE,
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GST_GL_EFFECT_TWIRL,
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GST_GL_EFFECT_BULGE,
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GST_GL_EFFECT_SQUARE,
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GST_GL_EFFECT_HEAT,
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GST_GL_EFFECT_SEPIA,
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GST_GL_EFFECT_XPRO,
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GST_GL_EFFECT_LUMA_XPRO,
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GST_GL_EFFECT_SIN,
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GST_GL_EFFECT_GLOW,
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GST_GL_N_EFFECTS
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} GstGLEffectsEffect;
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#define GST_TYPE_GL_EFFECTS_EFFECT (gst_gl_effects_effect_get_type ())
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static GType
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gst_gl_effects_effect_get_type (void)
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{
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static GType gl_effects_effect_type = 0;
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static const GEnumValue effect_types [] = {
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{ GST_GL_EFFECT_IDENTITY, "Do nothing Effect", "identity" },
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{ GST_GL_EFFECT_MIRROR, "Mirror Effect", "mirror" },
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{ GST_GL_EFFECT_SQUEEZE, "Squeeze Effect", "squeeze" },
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{ GST_GL_EFFECT_STRETCH, "Stretch Effect", "stretch" },
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{ GST_GL_EFFECT_FISHEYE, "FishEye Effect", "fisheye" },
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{ GST_GL_EFFECT_TWIRL, "Twirl Effect", "twirl" },
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{ GST_GL_EFFECT_BULGE, "Bulge Effect", "bulge" },
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{ GST_GL_EFFECT_TUNNEL, "Light Tunnel Effect", "tunnel" },
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{ GST_GL_EFFECT_SQUARE, "Square Effect", "square" },
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{ GST_GL_EFFECT_HEAT, "Heat Signature Effect", "heat" },
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{ GST_GL_EFFECT_SEPIA, "Sepia Toning Effect", "sepia" },
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{ GST_GL_EFFECT_XPRO, "Cross Processing Effect", "xpro" },
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{ GST_GL_EFFECT_LUMA_XPRO, "Luma Cross Processing Effect", "lumaxpro" },
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{ GST_GL_EFFECT_SIN, "All Grey but Red Effect", "sin" },
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{ GST_GL_EFFECT_GLOW, "Glow Lighting Effect", "glow" },
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{ 0, NULL, NULL }
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};
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if (!gl_effects_effect_type) {
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gl_effects_effect_type =
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g_enum_register_static ("GstGLEffectsEffect", effect_types);
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}
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return gl_effects_effect_type;
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}
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static void
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gst_gl_effects_set_effect (GstGLEffects *effects, gint effect_type) {
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switch (effect_type) {
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case GST_GL_EFFECT_IDENTITY:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_identity;
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break;
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case GST_GL_EFFECT_MIRROR:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_mirror;
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break;
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case GST_GL_EFFECT_SQUEEZE:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_squeeze;
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break;
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case GST_GL_EFFECT_STRETCH:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_stretch;
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break;
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case GST_GL_EFFECT_TUNNEL:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_tunnel;
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break;
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case GST_GL_EFFECT_FISHEYE:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_fisheye;
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break;
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case GST_GL_EFFECT_TWIRL:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_twirl;
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break;
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case GST_GL_EFFECT_BULGE:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_bulge;
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break;
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case GST_GL_EFFECT_SQUARE:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_square;
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break;
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case GST_GL_EFFECT_HEAT:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_heat;
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break;
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case GST_GL_EFFECT_SEPIA:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_sepia;
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break;
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case GST_GL_EFFECT_XPRO:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_xpro;
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break;
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case GST_GL_EFFECT_LUMA_XPRO:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_luma_xpro;
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break;
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case GST_GL_EFFECT_SIN:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_sin;
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break;
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case GST_GL_EFFECT_GLOW:
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effects->effect = (GstGLEffectProcessFunc) gst_gl_effects_glow;
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break;
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default:
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g_assert_not_reached ();
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}
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effects->current_effect = effect_type;
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}
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/* init resources that need a gl context */
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static void
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gst_gl_effects_init_gl_resources (GstGLFilter *filter)
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{
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GstGLEffects *effects = GST_GL_EFFECTS (filter);
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gint i;
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for (i=0; i<NEEDED_TEXTURES; i++) {
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glGenTextures (1, &effects->midtexture[i]);
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glBindTexture(GL_TEXTURE_RECTANGLE_ARB, effects->midtexture[i]);
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glTexImage2D(GL_TEXTURE_RECTANGLE_ARB, 0, GL_RGBA8,
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filter->width, filter->height, 0, GL_RGBA, GL_UNSIGNED_BYTE, NULL);
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glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
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glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
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glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
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glTexParameteri (GL_TEXTURE_RECTANGLE_ARB, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
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}
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}
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/* free resources that need a gl context */
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static void
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gst_gl_effects_reset_gl_resources (GstGLFilter *filter)
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{
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GstGLEffects *effects = GST_GL_EFFECTS (filter);
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gint i;
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for (i=0; i<10; i++) {
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glDeleteTextures (1, &effects->midtexture[i]);
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effects->midtexture[i] = 0;
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}
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for (i=0; i<GST_GL_EFFECTS_N_CURVES; i++) {
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glDeleteTextures (1, &effects->curve[i]);
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effects->curve[i] = 0;
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}
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}
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static void
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gst_gl_effects_base_init (gpointer klass)
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{
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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gst_element_class_set_details (element_class, &element_details);
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}
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static void
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gst_gl_effects_class_init (GstGLEffectsClass * klass)
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{
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GObjectClass *gobject_class;
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gobject_class = (GObjectClass *) klass;
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gobject_class->set_property = gst_gl_effects_set_property;
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gobject_class->get_property = gst_gl_effects_get_property;
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GST_GL_FILTER_CLASS (klass)->filter = gst_gl_effects_filter;
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GST_GL_FILTER_CLASS (klass)->display_init_cb = gst_gl_effects_init_gl_resources;
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GST_GL_FILTER_CLASS (klass)->display_reset_cb = gst_gl_effects_reset_gl_resources;
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GST_GL_FILTER_CLASS (klass)->onStart = gst_gl_effects_init_resources;
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GST_GL_FILTER_CLASS (klass)->onStop = gst_gl_effects_reset_resources;
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g_object_class_install_property (
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gobject_class,
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PROP_EFFECT,
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g_param_spec_enum ("effect",
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"Effect",
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"Select which effect apply to GL video texture",
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GST_TYPE_GL_EFFECTS_EFFECT,
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GST_GL_EFFECT_IDENTITY,
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G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (
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gobject_class,
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PROP_HSWAP,
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g_param_spec_boolean ("hswap",
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"Horizontal Swap",
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"Switch video texture left to right, useful with webcams",
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FALSE,
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G_PARAM_READWRITE));
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}
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void
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gst_gl_effects_draw_texture (GstGLEffects * effects, GLuint tex)
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{
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GstGLFilter *filter = GST_GL_FILTER (effects);
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glActiveTexture (GL_TEXTURE0);
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glEnable (GL_TEXTURE_RECTANGLE_ARB);
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glBindTexture (GL_TEXTURE_RECTANGLE_ARB, tex);
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glBegin (GL_QUADS);
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glTexCoord2f (0.0, 0.0);
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glVertex2f (-1.0, -1.0);
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glTexCoord2f ((gfloat)filter->width, 0.0);
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glVertex2f (1.0, -1.0);
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glTexCoord2f ((gfloat)filter->width, (gfloat)filter->height);
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glVertex2f (1.0, 1.0);
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glTexCoord2f (0.0, (gfloat)filter->height);
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glVertex2f (-1.0, 1.0);
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glEnd ();
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}
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static void
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set_horizontal_swap (GstGLDisplay *display, gpointer data)
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{
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// GstGLEffects *effects = GST_GL_EFFECTS (data);
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const double mirrormatrix[16] = {
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-1.0, 0.0, 0.0, 0.0,
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0.0, 1.0, 0.0, 0.0,
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0.0, 0.0, 1.0, 0.0,
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0.0, 0.0, 0.0, 1.0
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};
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glMatrixMode (GL_MODELVIEW);
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glLoadMatrixd (mirrormatrix);
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}
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static void
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gst_gl_effects_init (GstGLEffects * effects, GstGLEffectsClass * klass)
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{
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effects->effect = gst_gl_effects_identity;
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effects->horizontal_swap = FALSE;
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}
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static void
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gst_gl_effects_reset_resources (GstGLFilter* filter)
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{
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GstGLEffects* effects = GST_GL_EFFECTS(filter);
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// g_message ("reset resources");
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g_hash_table_unref (effects->shaderstable);
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effects->shaderstable = NULL;
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}
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static void
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gst_gl_effects_set_property (GObject * object, guint prop_id,
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const GValue * value, GParamSpec * pspec)
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{
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GstGLEffects *effects = GST_GL_EFFECTS (object);
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switch (prop_id) {
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case PROP_EFFECT:
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gst_gl_effects_set_effect (effects, g_value_get_enum (value));
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break;
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case PROP_HSWAP:
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effects->horizontal_swap = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gl_effects_get_property (GObject * object, guint prop_id,
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GValue * value, GParamSpec * pspec)
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{
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GstGLEffects *effects = GST_GL_EFFECTS (object);
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switch (prop_id) {
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case PROP_EFFECT:
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g_value_set_enum (value, effects->current_effect);
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break;
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case PROP_HSWAP:
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g_value_set_boolean (value, effects->horizontal_swap);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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gst_gl_effects_init_resources (GstGLFilter* filter)
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{
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GstGLEffects *effects = GST_GL_EFFECTS (filter);
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gint i;
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// g_message ("init resources");
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// g_message ("init hashtable");
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effects->shaderstable = g_hash_table_new_full (g_str_hash,
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g_str_equal,
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NULL,
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g_object_unref);
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// g_message ("zero textures and curves");
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for (i=0; i<NEEDED_TEXTURES; i++) {
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effects->midtexture[i] = 0;
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}
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for (i=0; i<GST_GL_EFFECTS_N_CURVES; i++) {
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effects->curve[i] = 0;
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}
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}
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static gboolean
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gst_gl_effects_filter (GstGLFilter* filter, GstGLBuffer* inbuf,
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GstGLBuffer* outbuf)
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{
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GstGLEffects* effects = GST_GL_EFFECTS(filter);
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effects->intexture = inbuf->texture;
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effects->outtexture = outbuf->texture;
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if (effects->horizontal_swap == TRUE)
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gst_gl_display_thread_add (filter->display, set_horizontal_swap, effects);
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effects->effect (effects);
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return TRUE;
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}
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