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kolibrios/programs/develop/libraries/pixlib/pixmap.inc

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static pixmap_t* alloc_pixmap()
{
if( px_slab.available )
{
pixmap_t *pixmap;
px_slab.available--;
pixmap = (pixmap_t*)px_slab.nextavail;
px_slab.nextavail = *(void**)pixmap;
return pixmap;
}
return NULL;
};
static void free_pixmap(pixmap_t *pixmap)
{
*(void**)pixmap = px_slab.nextavail;
px_slab.nextavail = pixmap;
px_slab.available++;
};
pixmap_t* CreatePixmap(unsigned width, unsigned height, u32_t format, u32_t flags)
{
pixmap_t *pixmap;
if( (width == 0) || ( width > 2048)||
(height == 0) || (height > 2048)||
(format != PICT_a8r8g8b8))
return NULL;
pixmap = alloc_pixmap();
if( pixmap )
{
void *raw;
int pitch;
pixmap->width = width;
pixmap->height = height;
pixmap->format = format;
pixmap->flags = flags;
if( (srv_hw2d != 0) &&
( (flags & PX_MEM_MASK)==PX_MEM_LOCAL) )
{
ioctl_t io;
io.handle = srv_hw2d;
io.io_code = PX_CREATE;
io.input = pixmap;
io.inp_size = 7;
io.output = NULL;
io.out_size = 0;
if (call_service(&io)==ERR_OK)
return pixmap;
else{
free_pixmap(pixmap) ;
return NULL;
}
}
else
{
/*
Only system memory
*/
pixmap->flags &= ~PX_MEM_MASK;
pitch = ((width+8)&~8)*4;
raw = UserAlloc(pitch * height);
if ( !raw ){
free_pixmap(pixmap);
return NULL;
};
pixmap->pitch = pitch;
pixmap->mapped = raw;
};
return pixmap;
};
return NULL;
};
int DestroyPixmap( pixmap_t *pixmap)
{
int retval = ERR_OK;
if(pixmap == (pixmap_t*)-1)
return ERR_PARAM;
if( (srv_hw2d != 0) &&
( (pixmap->flags & PX_MEM_MASK)==PX_MEM_LOCAL) )
{
int retval;
ioctl_t io;
io.handle = srv_hw2d;
io.io_code = PX_DESTROY;
io.input = pixmap;
io.inp_size = 7;
io.output = NULL;
io.out_size = 0;
retval = call_service(&io);
}
else
{
UserFree(pixmap->mapped);
pixmap->pitch = 0;
pixmap->mapped = 0;
pixmap->handle = 0;
};
free_pixmap(pixmap);
return retval;
};
void* LockPixmap(pixmap_t *pixmap)
{
if(pixmap == (pixmap_t*)-1)
return scrn_pixmap.mapped;
else
return pixmap->mapped;
}
int UnlockPixmap(pixmap_t *pixmap)
{
return ERR_OK;
};
int GetPixmapPitch(pixmap_t *pixmap)
{
if(pixmap == (pixmap_t*)-1)
return scrn_pixmap.pitch;
else
return pixmap->pitch;
};