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Commit 958b1c8b authored by Felix Paul Kühne's avatar Felix Paul Kühne
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* backport the recent OpenGL additions and fixes

parent da8cb44e
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Showing with 294 additions and 13 deletions
modules/video_output/opengl.c
View file @ 958b1c8b
/*****************************************************************************
* opengl.c: OpenGL video output
*****************************************************************************
* Copyright (C) 2004 the VideoLAN team
* Copyright (C) 2004-2006 the VideoLAN team
* $Id$
*
* Authors: Cyril Deguet <asmax@videolan.org>
* Gildas Bazin <gbazin@videolan.org>
* Eric Petit <titer@m0k.org>
* Cedric Cocquebert <cedric.cocquebert@supelec.fr>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
......@@ -89,6 +90,38 @@
#define OPENGL_EFFECT_NONE 1
#define OPENGL_EFFECT_CUBE 2
#define OPENGL_EFFECT_TRANSPARENT_CUBE 4
#if defined( HAVE_GL_GLU_H ) || defined( SYS_DARWIN )
#define OPENGL_MORE_EFFECT 8
#endif
#ifdef OPENGL_MORE_EFFECT
#include <math.h>
#ifdef SYS_DARWIN
#include <OpenGL/glu.h>
#else
#include <GL/glu.h>
#endif
/* 3D MODEL */
#define CYLINDER 8
#define TORUS 16
#define SPHERE 32
/*GRID2D TRANSFORMATION */
#define SQUAREXY 64
#define SQUARER 128
#define ASINXY 256
#define ASINR 512
#define SINEXY 1024
#define SINER 2048
#define INIFILE 4096 // not used, just for mark end ...
#define SIGN(x) (x < 0 ? (-1) : 1)
#define PID2 1.570796326794896619231322
static char *ppsz_effects[] = {
"none", "cube", "transparent-cube", "cylinder", "torus", "sphere","SQUAREXY","SQUARER", "ASINXY", "ASINR", "SINEXY", "SINER" };
static char *ppsz_effects_text[] = {
N_("None"), N_("Cube"), N_("Transparent Cube"),
N_("Cylinder"), N_("Torus"), N_("Sphere"), N_("SQUAREXY"),N_("SQUARER"), N_("ASINXY"), N_("ASINR"), N_("SINEXY"), N_("SINER") };
#endif
/*****************************************************************************
* Vout interface
......@@ -111,22 +144,34 @@ static int SendEvents( vlc_object_t *, char const *,
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#define SPEED_TEXT N_( "OpenGL cube rotation speed" )
/*****************************************************************************
* Module descriptor
*****************************************************************************/
#ifdef OPENGL_MORE_EFFECT
#define ACCURACY_TEXT N_( "OpenGL sampling accuracy " )
#define ACCURACY_LONGTEXT N_( "Select the accuracy of 3D object sampling(1 = min and 10 = max)" )
#define RADIUS_TEXT N_( "OpenGL Cylinder radius" )
#define RADIUS_LONGTEXT N_( "Radius of the OpenGL cylinder effect, if enabled" )
#define POV_X_TEXT N_("Point of view x-coordinate")
#define POV_X_LONGTEXT N_("Point of view (X coordinate) of the cube/cylinder "\
"effect, if enabled.")
#define POV_Y_TEXT N_("Point of view y-coordinate")
#define POV_Y_LONGTEXT N_("Point of view (Y coordinate) of the cube/cylinder "\
"effect, if enabled.")
#define POV_Z_TEXT N_("Point of view z-coordinate")
#define POV_Z_LONGTEXT N_("Point of view (Z coordinate) of the cube/cylinder "\
"effect, if enabled.")
#endif
#define SPEED_TEXT N_( "OpenGL cube rotation speed" )
#define SPEED_LONGTEXT N_( "Rotation speed of the OpenGL cube effect, if " \
"enabled." )
#define EFFECT_TEXT N_("Effect")
#define EFFECT_LONGTEXT N_( \
"Several visual OpenGL effects are available." )
#ifndef OPENGL_MORE_EFFECT
static char *ppsz_effects[] = {
"none", "cube", "transparent-cube" };
static char *ppsz_effects_text[] = {
N_("None"), N_("Cube"), N_("Transparent Cube") };
#endif
vlc_module_begin();
set_shortname( "OpenGL" );
......@@ -141,6 +186,19 @@ vlc_module_begin();
add_shortcut( "opengl" );
add_float( "opengl-cube-speed", 2.0, NULL, SPEED_TEXT,
SPEED_LONGTEXT, VLC_TRUE );
#ifdef OPENGL_MORE_EFFECT
add_integer_with_range( "opengl-accuracy", 4, 1, 10, NULL, ACCURACY_TEXT,
ACCURACY_LONGTEXT, VLC_TRUE );
add_float_with_range( "opengl-pov-x", 0.0, -1.0, 1.0, NULL, POV_X_TEXT,
POV_X_LONGTEXT, VLC_TRUE );
add_float_with_range( "opengl-pov-y", 0.0, -1.0, 1.0, NULL, POV_Y_TEXT,
POV_Y_LONGTEXT, VLC_TRUE );
add_float_with_range( "opengl-pov-z", -1.0, -1.0, 1.0, NULL, POV_Z_TEXT,
POV_Z_LONGTEXT, VLC_TRUE );
add_float( "opengl-cylinder-radius", -100.0, NULL, RADIUS_TEXT,
RADIUS_LONGTEXT, VLC_TRUE );
#endif
set_callbacks( CreateVout, DestroyVout );
add_string( "opengl-effect", "none", NULL, EFFECT_TEXT,
EFFECT_LONGTEXT, VLC_FALSE );
......@@ -166,6 +224,7 @@ struct vout_sys_t
int i_effect;
float f_speed;
float f_radius;
};
/*****************************************************************************
......@@ -231,6 +290,7 @@ static int CreateVout( vlc_object_t *p_this )
}
p_sys->f_speed = var_CreateGetFloat( p_vout, "opengl-cube-speed" );
p_sys->f_radius = var_CreateGetFloat( p_vout, "opengl-cylinder-radius" );
p_vout->pf_init = Init;
p_vout->pf_end = End;
......@@ -373,6 +433,7 @@ static int Init( vout_thread_t *p_vout )
glDisable(GL_DEPTH_TEST);
glDepthMask(GL_FALSE);
glDisable(GL_CULL_FACE);
glClearColor( 0.0f, 0.0f, 0.0f, 1.0f );
glClear( GL_COLOR_BUFFER_BIT );
/* Check if the user asked for useless visual effects */
......@@ -386,7 +447,6 @@ static int Init( vout_thread_t *p_vout )
p_sys->i_effect = OPENGL_EFFECT_CUBE;
glEnable( GL_CULL_FACE);
//glEnable( GL_DEPTH_TEST );
}
else if( !strcmp( val.psz_string, "transparent-cube" ) )
{
......@@ -397,11 +457,27 @@ static int Init( vout_thread_t *p_vout )
glBlendFunc( GL_SRC_ALPHA, GL_ONE );
}
else
{
#ifdef OPENGL_MORE_EFFECT
p_sys->i_effect = 3;
while (( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]) ) && (pow(2,p_sys->i_effect) < INIFILE))
{
p_sys->i_effect ++;
}
if (pow(2,p_sys->i_effect) < INIFILE)
p_sys->i_effect = pow(2,p_sys->i_effect);
else if ( strcmp( val.psz_string, ppsz_effects[p_sys->i_effect]))
{
msg_Warn( p_vout, "no valid opengl effect provided, using "
"\"none\"" );
p_sys->i_effect = OPENGL_EFFECT_NONE;
}
#else
msg_Warn( p_vout, "no valid opengl effect provided, using "
"\"none\"" );
p_sys->i_effect = OPENGL_EFFECT_NONE;
#endif
}
if( val.psz_string ) free( val.psz_string );
if( p_sys->i_effect & ( OPENGL_EFFECT_CUBE |
......@@ -415,7 +491,24 @@ static int Init( vout_thread_t *p_vout )
glLoadIdentity();
glTranslatef( 0.0, 0.0, - 5.0 );
}
#ifdef OPENGL_MORE_EFFECT
else
{
/* Set the perpective */
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glTranslatef( 0.0, 0.0, -3.0 );
float f_pov_x, f_pov_y, f_pov_z;
f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
}
#endif
if( p_sys->p_vout->pf_unlock )
{
p_sys->p_vout->pf_unlock( p_sys->p_vout );
......@@ -441,6 +534,11 @@ static void End( vout_thread_t *p_vout )
glFinish();
glFlush();
/* Free the texture buffer*/
glDeleteTextures( 2, p_sys->p_textures );
if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
if( p_sys->p_vout->pf_unlock )
{
p_sys->p_vout->pf_unlock( p_sys->p_vout );
......@@ -461,10 +559,6 @@ static void DestroyVout( vlc_object_t *p_this )
vlc_object_detach( p_sys->p_vout );
vlc_object_destroy( p_sys->p_vout );
/* Free the texture buffer*/
if( p_sys->pp_buffer[0] ) free( p_sys->pp_buffer[0] );
if( p_sys->pp_buffer[1] ) free( p_sys->pp_buffer[1] );
free( p_sys );
}
......@@ -518,6 +612,17 @@ static int Manage( vout_thread_t *p_vout )
switch( p_sys->i_effect )
{
case OPENGL_EFFECT_CUBE:
#ifdef OPENGL_MORE_EFFECT
case CYLINDER:
case TORUS:
case SPHERE:
case SQUAREXY:
case SQUARER:
case ASINXY:
case ASINR:
case SINEXY:
case SINER:
#endif
glEnable( GL_CULL_FACE );
break;
......@@ -539,6 +644,23 @@ static int Manage( vout_thread_t *p_vout )
glLoadIdentity();
glTranslatef( 0.0, 0.0, - 5.0 );
}
#ifdef OPENGL_MORE_EFFECT
else
{
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
glFrustum( -1.0, 1.0, -1.0, 1.0, 3.0, 20.0 );
glMatrixMode( GL_MODELVIEW );
glLoadIdentity();
glTranslatef( 0.0, 0.0, -3.0 );
float f_pov_x, f_pov_y, f_pov_z;
f_pov_x = var_CreateGetFloat( p_vout, "opengl-pov-x");
f_pov_y = var_CreateGetFloat( p_vout, "opengl-pov-y");
f_pov_z = var_CreateGetFloat( p_vout, "opengl-pov-z");
gluLookAt(0, 0, 0, f_pov_x, f_pov_y, f_pov_z, 0, 1, 0);
}
#endif
}
if( p_sys->p_vout->pf_unlock )
......@@ -614,6 +736,116 @@ static void Render( vout_thread_t *p_vout, picture_t *p_pic )
}
}
#ifdef OPENGL_MORE_EFFECT
/*****************************************************************************
* Transform: Calculate the distorted grid coordinates
*****************************************************************************/
void Transform(float p, int distortion, float width, float height,int i, int j, int i_visible_width, int i_visible_height, double *ix,double *iy)
{
double x,y,xnew,ynew;
double r,theta,rnew,thetanew;
x = (double)i * (width / ((double)i_visible_width));
y = (double)j * (height / ((double)i_visible_height));
x = (2.0 * (double)x / width) - 1;
y = (2.0 * (double)y / height) - 1;
xnew = x;
ynew = y;
r = sqrt(x*x+y*y);
theta = atan2(y,x);
switch (distortion)
{
/* GRID2D TRANSFORMATION */
case SINEXY:
xnew = sin(PID2*x);
ynew = sin(PID2*y);
break;
case SINER:
rnew = sin(PID2*r);
thetanew = theta;
xnew = rnew * cos(thetanew);
ynew = rnew * sin(thetanew);
break;
case SQUAREXY:
xnew = x*x*SIGN(x);
ynew = y*y*SIGN(y);
break;
case SQUARER:
rnew = r*r;
thetanew = theta;
xnew = rnew * cos(thetanew);
ynew = rnew * sin(thetanew);
break;
case ASINXY:
xnew = asin(x) / PID2;
ynew = asin(y) / PID2;
break;
case ASINR:
rnew = asin(r) / PID2;
thetanew = theta;
xnew = rnew * cos(thetanew);
ynew = rnew * sin(thetanew);
break;
/* OTHER WAY: 3D MODEL */
default:
xnew = x;
ynew = y;
}
*ix = width * (xnew + 1) / (2.0);
*iy = height * (ynew + 1) / (2.0);
}
/*****************************************************************************
* Z_Compute: Calculate the Z-coordinate
*****************************************************************************/
float Z_Compute(float p, int distortion, float x, float y)
{
float f_z = 0.0;
double d_p = p / 100.0;
switch (distortion)
{
/* 3D MODEL */
case CYLINDER:
if (d_p > 0)
f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
else
f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x));
break;
case TORUS:
if (d_p > 0)
f_z = (1 - d_p * d_p) / (d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
else
f_z = (1 - d_p * d_p) / (d_p) + 2 * d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x)) + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - y * y));
break;
case SPHERE:
if (d_p > 0)
f_z = (1 - d_p * d_p) / (2 * d_p) - sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
else
f_z = (1 - d_p * d_p) / (2 * d_p) + d_p + sqrt(fabs((d_p * d_p + 1) / (2 * d_p) * (d_p * d_p + 1) / (2 * d_p) - x * x - y * y));
break;
/* OTHER WAY: GRID2D TRANSFORMATION */
case SINEXY:;
case SINER:
case SQUAREXY:
case SQUARER:;
case ASINXY:
case ASINR:
f_z = 0.0;
break;
default:
f_z = 0.0;
}
return f_z;
}
#endif
/*****************************************************************************
* DisplayVideo: displays previously rendered output
*****************************************************************************/
......@@ -664,6 +896,55 @@ static void DisplayVideo( vout_thread_t *p_vout, picture_t *p_pic )
glEnd();
}
else
#ifdef OPENGL_MORE_EFFECT
if ((p_sys->i_effect > OPENGL_EFFECT_TRANSPARENT_CUBE) ||
((p_sys->i_effect == OPENGL_EFFECT_NONE)))
{
unsigned int i_i, i_j;
unsigned int i_accuracy = config_GetInt( p_vout, "opengl-accuracy");
unsigned int i_n = pow(2, i_accuracy);
unsigned int i_n_x = (p_vout->fmt_out.i_visible_width / (i_n * 2));
unsigned int i_n_y = (p_vout->fmt_out.i_visible_height / i_n);
double d_x, d_y;
int i_distortion = p_sys->i_effect;
float f_p = p_sys->f_radius;
glEnable( VLCGL_TARGET );
glBegin(GL_QUADS);
for (i_i = 0; i_i < p_vout->fmt_out.i_visible_width; i_i += i_n_x)
{
if ( i_i == i_n_x * i_n / 2) i_n_x += p_vout->fmt_out.i_visible_width % i_n;
if ((i_i == (p_vout->fmt_out.i_visible_width / i_n) * i_n / 2 + i_n_x) &&
(p_vout->fmt_out.i_visible_width / i_n != i_n_x))
i_n_x -= p_vout->fmt_out.i_visible_width % i_n;
int i_m;
int i_index_max = 0;
for (i_j = 0; i_j < p_vout->fmt_out.i_visible_height; i_j += i_n_y)
{
if ( i_j == i_n_y * i_n / 2) i_n_y += p_vout->fmt_out.i_visible_height % i_n;
if ((i_j == (p_vout->fmt_out.i_visible_height / i_n) * i_n / 2 + i_n_y) &&
(p_vout->fmt_out.i_visible_height / i_n != i_n_y))
i_n_y -= p_vout->fmt_out.i_visible_height % i_n;
for (i_m = i_index_max; i_m < i_index_max + 4; i_m++)
{
int i_k = ((i_m % 4) == 1) || ((i_m % 4) == 2);
int i_l = ((i_m % 4) == 2) || ((i_m % 4) == 3);
Transform(f_p, i_distortion, f_width, f_height, i_i + i_k * i_n_x, i_j + i_l * i_n_y, p_vout->fmt_out.i_visible_width, p_vout->fmt_out.i_visible_height, &d_x, &d_y);
glTexCoord2f(f_x + d_x, f_y + d_y);
d_x = - 1.0 + 2.0 * ((double)(i_k * i_n_x + i_i) / (double)p_vout->fmt_out.i_visible_width);
d_y = 1.0 - 2.0 * (((double)i_l * i_n_y + i_j) / (double)p_vout->fmt_out.i_visible_height);
glVertex3f((float)d_x, (float)d_y, Z_Compute(f_p, i_distortion, (float)d_x, (float)d_y));
}
}
}
glEnd();
}
else
#endif
{
glRotatef( 0.5 * p_sys->f_speed , 0.3, 0.5, 0.7 );
......
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