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Validate.h
235 lines (213 loc) · 6.63 KB
/
Validate.h
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#include "ppport.h"
#include <SDL.h>
#include "helper.h"
/* SV input should be a mortal SV */
SV *create_mortal_rect( SV *rect )
{
SV *retval = NULL;
if( !SvOK(rect) )
{
/* create a new zero sized rectangle */
SDL_Rect* r = safemalloc( sizeof(SDL_Rect) );
r->x = 0;
r->y = 0;
r->w = 0;
r->h = 0;
retval = obj2bag( sizeof( SDL_Rect *), (void *)(r), "SDL::Rect" );
sv_2mortal(retval) ;
}
else if( sv_derived_from(rect, "ARRAY") )
{
/* create a new rectangle from the array */
SDL_Rect* r = safemalloc( sizeof(SDL_Rect) );
AV* recta = (AV*)SvRV(rect);
int len = av_len(recta);
int i;
int ra[4];
for(i = 0; i < 4; i++)
{
SV* iv = i > len ? NULL : AvARRAY(recta)[i];
ra[i] = ( iv == NULL || !SvOK( iv ) || iv == &PL_sv_undef )
? 0
: SvIV( iv );
}
r->x = ra[0]; r->y = ra[1]; r->w = ra[2]; r->h= ra[3];
retval = obj2bag( sizeof( SDL_Rect *), (void *)(r), "SDL::Rect" );
sv_2mortal(retval) ;
}
else if( sv_isobject(rect) && sv_derived_from(rect, "SDL::Rect") )
{
/* we already had a good mortal rect . Just pass it along */
retval = rect;
}
else
croak("Rect must be number or arrayref or SDL::Rect or undef");
return retval;
}
void assert_surface( SV *surface )
{
if( sv_isobject(surface) && sv_derived_from(surface, "SDL::Surface"))
return;
croak("Surface must be SDL::Surface or SDLx::Surface");
/* does not return */
}
char *_color_format( SV *color )
{
char *retval = NULL;
if( !SvOK(color) || SvIOK(color) )
retval = "number";
else if( sv_derived_from(color, "ARRAY") )
retval = "arrayref";
else if( sv_isobject(color) && sv_derived_from(color, "SDL::Color") )
retval = "SDL::Color";
else
croak("Color must be number or arrayref or SDL::Color");
return retval;
}
SV *_color_number( SV *color, SV *alpha )
{
int c = SvIV(color);
int a = SvIV(alpha);
unsigned int retval = SvUV(color);
if( !SvOK(color) || color < 0 )
{
if( color < 0 )
warn("Color was a negative number");
retval = a == 1
? 0x000000FF
: 0;
}
else
{
if( a == 1 && (c > 0xFFFFFFFF) )
{
warn("Color was number greater than maximum expected: 0xFFFFFFFF");
retval = 0xFFFFFFFF;
}
else if ( a != 1 && ( c > 0xFFFFFF) )
{
warn("Color was number greater than maximum expected: 0xFFFFFF");
retval = 0xFFFFFF;
}
}
return newSVuv(retval);
}
/* returns a new mortal AV* */
AV *_color_arrayref( AV *color, SV *alpha )
{
AV *retval = (AV*)sv_2mortal((SV*)newAV());
int length = SvTRUE(alpha) ? 4 : 3;
int i = 0;
for(i = 0; i < length; i++)
{
if( av_len(color) < i || !SvOK(AvARRAY(color)[i]) )
av_push(retval, newSVuv(i == 3 ? 0xFF : 0));
else
{
int c = SvIV(AvARRAY(color)[i]);
if( c > 0xFF )
{
warn("Number in color arrayref was greater than maximum expected: 0xFF");
av_push(retval, newSVuv(0xFF));
}
else if( c < 0 )
{
warn("Number in color arrayref was negative");
av_push(retval, newSVuv(0));
}
else
av_push(retval, newSVuv(c));
}
}
return retval;
}
/* returns a mortal AV* */
AV* __list_rgb( SV* color )
{
char *format = _color_format(color);
AV* RETVAL ;
if ( 0 == strcmp("number", format) )
{
RETVAL = (AV*)sv_2mortal( (SV *) newAV() );
unsigned int _color = SvUV(sv_2mortal(_color_number(color, newSVuv(0))));
av_push(RETVAL, newSVuv(_color >> 16 & 0xFF));
av_push(RETVAL, newSVuv(_color >> 8 & 0xFF));
av_push(RETVAL, newSVuv(_color & 0xFF));
}
else if ( 0 == strcmp("arrayref", format) )
{
/* _color_arrayref returns a mortal AV* */
RETVAL = _color_arrayref((AV *)SvRV(color), sv_2mortal(newSVuv(0)));
}
else if ( 0 == strcmp("SDL::Color", format) )
{
RETVAL = (AV*)sv_2mortal((SV *) newAV() );
SDL_Color *_color = (SDL_Color *)bag2obj(color);
av_push(RETVAL, newSVuv(_color->r));
av_push(RETVAL, newSVuv(_color->g));
av_push(RETVAL, newSVuv(_color->b));
}
else
{
RETVAL = (AV*)sv_2mortal((SV *) newAV() );
av_push(RETVAL, newSVuv(0));
av_push(RETVAL, newSVuv(0));
av_push(RETVAL, newSVuv(0));
}
return RETVAL;
}
AV* __list_rgba( SV* color )
{
char *format = _color_format(color);
AV* RETVAL ;
if ( 0 == strcmp("number", format) )
{
RETVAL = (AV*)sv_2mortal((SV *) newAV() );
unsigned int _color = SvUV(sv_2mortal(_color_number(color, sv_2mortal(newSVuv(1)))));
av_push(RETVAL, newSVuv(_color >> 24 & 0xFF));
av_push(RETVAL, newSVuv(_color >> 16 & 0xFF));
av_push(RETVAL, newSVuv(_color >> 8 & 0xFF));
av_push(RETVAL, newSVuv(_color & 0xFF));
}
else if ( 0 == strcmp("arrayref", format) )
{
RETVAL = _color_arrayref((AV *)SvRV(color), sv_2mortal(newSVuv(1)));
}
else if ( 0 == strcmp("SDL::Color", format) )
{
RETVAL = (AV*)sv_2mortal((SV *) newAV() );
SDL_Color *_color = (SDL_Color*)bag2obj(color);
av_push(RETVAL, newSVuv(_color->r));
av_push(RETVAL, newSVuv(_color->g));
av_push(RETVAL, newSVuv(_color->b));
av_push(RETVAL, newSVuv(0xFF));
}
else
{
RETVAL = (AV*)sv_2mortal((SV *) newAV() );
av_push(RETVAL, newSVuv(0));
av_push(RETVAL, newSVuv(0));
av_push(RETVAL, newSVuv(0));
av_push(RETVAL, newSVuv(0xFF));
}
return RETVAL;
}
unsigned int __map_rgb( SV* color, SDL_PixelFormat* format )
{
Uint8 r, g, b;
AV* a = __list_rgb( color );
r = SvUV(*av_fetch(a, 0, 0));
g = SvUV(*av_fetch(a, 1, 0));
b = SvUV(*av_fetch(a, 2, 0));
return SDL_MapRGB( format, r, g, b );
}
unsigned int __map_rgba( SV* color, SDL_PixelFormat* format )
{
int r, g, b, a;
AV* ar = __list_rgba( color );
r = SvUV(*av_fetch(ar, 0, 0));
g = SvUV(*av_fetch(ar, 1, 0));
b = SvUV(*av_fetch(ar, 2, 0));
a = SvUV(*av_fetch(ar, 3, 0));
return SDL_MapRGBA( format, r, g, b, a );
}