mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-28 12:41:05 +00:00
343 lines
11 KiB
C
343 lines
11 KiB
C
/*
|
|
* GStreamer
|
|
* Copyright (C) 2009 Julien Isorce <julien.isorce@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., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include "gstglmosaic.h"
|
|
|
|
#define GST_CAT_DEFAULT gst_gl_mosaic_debug
|
|
GST_DEBUG_CATEGORY_STATIC (GST_CAT_DEFAULT);
|
|
|
|
enum
|
|
{
|
|
PROP_0,
|
|
};
|
|
|
|
#define DEBUG_INIT(bla) \
|
|
GST_DEBUG_CATEGORY_INIT (gst_gl_mosaic_debug, "glmosaic", 0, "glmosaic element");
|
|
|
|
GST_BOILERPLATE_FULL (GstGLMosaic, gst_gl_mosaic, GstGLMixer,
|
|
GST_TYPE_GL_MIXER, DEBUG_INIT);
|
|
|
|
static void gst_gl_mosaic_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec);
|
|
static void gst_gl_mosaic_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec);
|
|
|
|
static void gst_gl_mosaic_reset (GstGLMixer * mixer);
|
|
static gboolean gst_gl_mosaic_init_shader (GstGLMixer * mixer,
|
|
GstCaps * outcaps);
|
|
|
|
static gboolean gst_gl_mosaic_proc (GstGLMixer * mixer,
|
|
GPtrArray * buffers, GstBuffer * outbuf);
|
|
static void gst_gl_mosaic_callback (gpointer stuff);
|
|
|
|
//vertex source
|
|
static const gchar *mosaic_v_src =
|
|
"#extension GL_ARB_texture_rectangle : enable\n"
|
|
"uniform mat4 u_matrix; \n"
|
|
"uniform float xrot_degree, yrot_degree, zrot_degree; \n"
|
|
"attribute vec4 a_position; \n"
|
|
"attribute vec2 a_texCoord; \n"
|
|
"varying vec2 v_texCoord; \n"
|
|
"void main() \n"
|
|
"{ \n"
|
|
" float PI = 3.14159265; \n"
|
|
" float xrot = xrot_degree*2.0*PI/360.0; \n"
|
|
" float yrot = yrot_degree*2.0*PI/360.0; \n"
|
|
" float zrot = zrot_degree*2.0*PI/360.0; \n"
|
|
" mat4 matX = mat4 ( \n"
|
|
" 1.0, 0.0, 0.0, 0.0, \n"
|
|
" 0.0, cos(xrot), sin(xrot), 0.0, \n"
|
|
" 0.0, -sin(xrot), cos(xrot), 0.0, \n"
|
|
" 0.0, 0.0, 0.0, 1.0 ); \n"
|
|
" mat4 matY = mat4 ( \n"
|
|
" cos(yrot), 0.0, -sin(yrot), 0.0, \n"
|
|
" 0.0, 1.0, 0.0, 0.0, \n"
|
|
" sin(yrot), 0.0, cos(yrot), 0.0, \n"
|
|
" 0.0, 0.0, 0.0, 1.0 ); \n"
|
|
" mat4 matZ = mat4 ( \n"
|
|
" cos(zrot), sin(zrot), 0.0, 0.0, \n"
|
|
" -sin(zrot), cos(zrot), 0.0, 0.0, \n"
|
|
" 0.0, 0.0, 1.0, 0.0, \n"
|
|
" 0.0, 0.0, 0.0, 1.0 ); \n"
|
|
" gl_Position = u_matrix * matZ * matY * matX * a_position; \n"
|
|
" v_texCoord = a_texCoord; \n"
|
|
"} \n";
|
|
|
|
//fragment source
|
|
static const gchar *mosaic_f_src =
|
|
"#extension GL_ARB_texture_rectangle : enable\n"
|
|
"uniform sampler2DRect s_texture; \n"
|
|
"varying vec2 v_texCoord; \n"
|
|
"void main() \n"
|
|
"{ \n"
|
|
//" gl_FragColor = vec4( 1.0, 0.5, 1.0, 1.0 );\n"
|
|
" gl_FragColor = texture2DRect( s_texture, v_texCoord );\n"
|
|
"} \n";
|
|
|
|
static void
|
|
gst_gl_mosaic_base_init (gpointer klass)
|
|
{
|
|
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
|
|
|
|
gst_element_class_set_details_simple (element_class, "OpenGL mosaic",
|
|
"Filter/Effect", "OpenGL mosaic",
|
|
"Julien Isorce <julien.isorce@gmail.com>");
|
|
}
|
|
|
|
static void
|
|
gst_gl_mosaic_class_init (GstGLMosaicClass * klass)
|
|
{
|
|
GObjectClass *gobject_class;
|
|
|
|
gobject_class = (GObjectClass *) klass;
|
|
gobject_class->set_property = gst_gl_mosaic_set_property;
|
|
gobject_class->get_property = gst_gl_mosaic_get_property;
|
|
|
|
GST_GL_MIXER_CLASS (klass)->set_caps = gst_gl_mosaic_init_shader;
|
|
GST_GL_MIXER_CLASS (klass)->reset = gst_gl_mosaic_reset;
|
|
GST_GL_MIXER_CLASS (klass)->process_buffers = gst_gl_mosaic_proc;
|
|
}
|
|
|
|
static void
|
|
gst_gl_mosaic_init (GstGLMosaic * mosaic, GstGLMosaicClass * klass)
|
|
{
|
|
mosaic->shader = NULL;
|
|
mosaic->input_gl_buffers = NULL;
|
|
}
|
|
|
|
static void
|
|
gst_gl_mosaic_set_property (GObject * object, guint prop_id,
|
|
const GValue * value, GParamSpec * pspec)
|
|
{
|
|
//GstGLMosaic *mixer = GST_GL_MOSAIC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_mosaic_get_property (GObject * object, guint prop_id,
|
|
GValue * value, GParamSpec * pspec)
|
|
{
|
|
//GstGLMosaic* mixer = GST_GL_MOSAIC (object);
|
|
|
|
switch (prop_id) {
|
|
default:
|
|
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
gst_gl_mosaic_reset (GstGLMixer * mixer)
|
|
{
|
|
GstGLMosaic *mosaic = GST_GL_MOSAIC (mixer);
|
|
|
|
mosaic->input_gl_buffers = NULL;
|
|
|
|
//blocking call, wait the opengl thread has destroyed the shader
|
|
gst_gl_display_del_shader (mixer->display, mosaic->shader);
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mosaic_init_shader (GstGLMixer * mixer, GstCaps * outcaps)
|
|
{
|
|
GstGLMosaic *mosaic = GST_GL_MOSAIC (mixer);
|
|
|
|
//blocking call, wait the opengl thread has compiled the shader
|
|
gst_gl_display_gen_shader (mixer->display, mosaic_v_src, mosaic_f_src,
|
|
&mosaic->shader);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_gl_mosaic_proc (GstGLMixer * mix, GPtrArray * buffers, GstBuffer * outbuf)
|
|
{
|
|
GstGLMosaic *mosaic = GST_GL_MOSAIC (mix);
|
|
GstGLBuffer *gl_out_buffer = GST_GL_BUFFER (outbuf);
|
|
|
|
mosaic->input_gl_buffers = buffers;
|
|
|
|
//blocking call, use a FBO
|
|
gst_gl_display_use_fbo_v2 (mix->display, mix->width, mix->height,
|
|
mix->fbo, mix->depthbuffer, gl_out_buffer->texture,
|
|
gst_gl_mosaic_callback, (gpointer) mosaic);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
//opengl scene, params: input texture (not the output mixer->texture)
|
|
static void
|
|
gst_gl_mosaic_callback (gpointer stuff)
|
|
{
|
|
GstGLMosaic *mosaic = GST_GL_MOSAIC (stuff);
|
|
|
|
static GLfloat xrot = 0;
|
|
static GLfloat yrot = 0;
|
|
static GLfloat zrot = 0;
|
|
|
|
GLint attr_position_loc = 0;
|
|
GLint attr_texture_loc = 0;
|
|
|
|
const GLfloat matrix[] = {
|
|
0.5f, 0.0f, 0.0f, 0.0f,
|
|
0.0f, 0.5f, 0.0f, 0.0f,
|
|
0.0f, 0.0f, 0.5f, 0.0f,
|
|
0.0f, 0.0f, 0.0f, 1.0f
|
|
};
|
|
|
|
const GLushort indices[] = {
|
|
0, 1, 2,
|
|
0, 2, 3
|
|
};
|
|
|
|
guint count = 0;
|
|
gboolean do_next = TRUE;
|
|
|
|
gst_gl_shader_use (NULL);
|
|
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, 0);
|
|
glDisable (GL_TEXTURE_RECTANGLE_ARB);
|
|
|
|
glEnable (GL_DEPTH_TEST);
|
|
|
|
glClearColor (0.0, 0.0, 0.0, 0.0);
|
|
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
|
|
gst_gl_shader_use (mosaic->shader);
|
|
|
|
attr_position_loc =
|
|
gst_gl_shader_get_attribute_location (mosaic->shader, "a_position");
|
|
attr_texture_loc =
|
|
gst_gl_shader_get_attribute_location (mosaic->shader, "a_texCoord");
|
|
|
|
while (do_next && count < mosaic->input_gl_buffers->len && count < 6) {
|
|
GstGLBuffer *gl_in_buffer =
|
|
g_ptr_array_index (mosaic->input_gl_buffers, count);
|
|
|
|
if (gl_in_buffer && gl_in_buffer->texture) {
|
|
GLuint texture = gl_in_buffer->texture;
|
|
GLfloat width = (GLfloat) gl_in_buffer->width;
|
|
GLfloat height = (GLfloat) gl_in_buffer->height;
|
|
|
|
const GLfloat v_vertices[] = {
|
|
|
|
//front face
|
|
1.0f, 1.0f, -1.0f,
|
|
width, 0.0f,
|
|
1.0f, -1.0f, -1.0f,
|
|
width, height,
|
|
-1.0f, -1.0f, -1.0f,
|
|
0.0f, height,
|
|
-1.0f, 1.0f, -1.0f,
|
|
0.0f, 0.0f,
|
|
//right face
|
|
1.0f, 1.0f, 1.0f,
|
|
width, 0.0f,
|
|
1.0f, -1.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
1.0f, -1.0f, -1.0f,
|
|
0.0f, height,
|
|
1.0f, 1.0f, -1.0f,
|
|
width, height,
|
|
//left face
|
|
-1.0f, 1.0f, 1.0f,
|
|
width, 0.0f,
|
|
-1.0f, 1.0f, -1.0f,
|
|
width, height,
|
|
-1.0f, -1.0f, -1.0f,
|
|
0.0f, height,
|
|
-1.0f, -1.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
//top face
|
|
1.0f, -1.0f, 1.0f,
|
|
width, 0.0f,
|
|
-1.0f, -1.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
-1.0f, -1.0f, -1.0f,
|
|
0.0f, height,
|
|
1.0f, -1.0f, -1.0f,
|
|
width, height,
|
|
//bottom face
|
|
1.0f, 1.0f, 1.0f,
|
|
width, 0.0f,
|
|
1.0f, 1.0f, -1.0f,
|
|
width, height,
|
|
-1.0f, 1.0f, -1.0f,
|
|
0.0f, height,
|
|
-1.0f, 1.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
//back face
|
|
1.0f, 1.0f, 1.0f,
|
|
width, 0.0f,
|
|
-1.0f, 1.0f, 1.0f,
|
|
0.0f, 0.0f,
|
|
-1.0f, -1.0f, 1.0f,
|
|
0.0f, height,
|
|
1.0f, -1.0f, 1.0f,
|
|
width, height
|
|
};
|
|
|
|
glVertexAttribPointerARB (attr_position_loc, 3, GL_FLOAT,
|
|
GL_FALSE, 5 * sizeof (GLfloat), &v_vertices[5 * 4 * count]);
|
|
|
|
glVertexAttribPointerARB (attr_texture_loc, 2, GL_FLOAT,
|
|
GL_FALSE, 5 * sizeof (GLfloat), &v_vertices[5 * 4 * count + 3]);
|
|
|
|
glEnableVertexAttribArrayARB (attr_position_loc);
|
|
glEnableVertexAttribArrayARB (attr_texture_loc);
|
|
|
|
glActiveTextureARB (GL_TEXTURE0_ARB);
|
|
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, texture);
|
|
gst_gl_shader_set_uniform_1i (mosaic->shader, "s_texture", 0);
|
|
gst_gl_shader_set_uniform_1f (mosaic->shader, "xrot_degree", xrot);
|
|
gst_gl_shader_set_uniform_1f (mosaic->shader, "yrot_degree", yrot);
|
|
gst_gl_shader_set_uniform_1f (mosaic->shader, "zrot_degree", zrot);
|
|
gst_gl_shader_set_uniform_matrix_4fv (mosaic->shader, "u_matrix", 1,
|
|
GL_FALSE, matrix);
|
|
|
|
glDrawElements (GL_TRIANGLES, 6, GL_UNSIGNED_SHORT, indices);
|
|
|
|
++count;
|
|
} else {
|
|
do_next = FALSE;
|
|
}
|
|
}
|
|
|
|
glDisableVertexAttribArrayARB (attr_position_loc);
|
|
glDisableVertexAttribArrayARB (attr_texture_loc);
|
|
|
|
glBindTexture (GL_TEXTURE_RECTANGLE_ARB, 0);
|
|
|
|
glDisable (GL_DEPTH_TEST);
|
|
|
|
gst_gl_shader_use (NULL);
|
|
|
|
xrot += 0.6f;
|
|
yrot += 0.4f;
|
|
zrot += 0.8f;
|
|
}
|