}
}
-static void Image_Resample24LerpLine (const unsigned char *in, unsigned char *out, int inwidth, int outwidth)
-{
- int j, xi, oldx = 0, f, fstep, endx, lerp;
- fstep = (int) (inwidth*65536.0f/outwidth);
- endx = (inwidth-1);
- for (j = 0,f = 0;j < outwidth;j++, f += fstep)
- {
- xi = f >> 16;
- if (xi != oldx)
- {
- in += (xi - oldx) * 3;
- oldx = xi;
- }
- if (xi < endx)
- {
- lerp = f & 0xFFFF;
- *out++ = (unsigned char) ((((in[3] - in[0]) * lerp) >> 16) + in[0]);
- *out++ = (unsigned char) ((((in[4] - in[1]) * lerp) >> 16) + in[1]);
- *out++ = (unsigned char) ((((in[5] - in[2]) * lerp) >> 16) + in[2]);
- }
- else // last pixel of the line has no pixel to lerp to
- {
- *out++ = in[0];
- *out++ = in[1];
- *out++ = in[2];
- }
- }
-}
-
#define LERPBYTE(i) r = resamplerow1[i];out[i] = (unsigned char) ((((resamplerow2[i] - r) * lerp) >> 16) + r)
void Image_Resample32Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
{
}
}
-void Image_Resample24Lerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
-{
- int i, j, r, yi, oldy, f, fstep, lerp, endy = (inheight-1), inwidth3 = inwidth * 3, outwidth3 = outwidth * 3;
- unsigned char *out;
- const unsigned char *inrow;
- unsigned char *resamplerow1;
- unsigned char *resamplerow2;
- out = (unsigned char *)outdata;
- fstep = (int) (inheight*65536.0f/outheight);
-
- resamplerow1 = (unsigned char *)Mem_Alloc(tempmempool, outwidth*3*2);
- resamplerow2 = resamplerow1 + outwidth*3;
-
- inrow = (const unsigned char *)indata;
- oldy = 0;
- Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
- Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
- for (i = 0, f = 0;i < outheight;i++,f += fstep)
- {
- yi = f >> 16;
- if (yi < endy)
- {
- lerp = f & 0xFFFF;
- if (yi != oldy)
- {
- inrow = (unsigned char *)indata + inwidth3*yi;
- if (yi == oldy+1)
- memcpy(resamplerow1, resamplerow2, outwidth3);
- else
- Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
- Image_Resample24LerpLine (inrow + inwidth3, resamplerow2, inwidth, outwidth);
- oldy = yi;
- }
- j = outwidth - 4;
- while(j >= 0)
- {
- LERPBYTE( 0);
- LERPBYTE( 1);
- LERPBYTE( 2);
- LERPBYTE( 3);
- LERPBYTE( 4);
- LERPBYTE( 5);
- LERPBYTE( 6);
- LERPBYTE( 7);
- LERPBYTE( 8);
- LERPBYTE( 9);
- LERPBYTE(10);
- LERPBYTE(11);
- out += 12;
- resamplerow1 += 12;
- resamplerow2 += 12;
- j -= 4;
- }
- if (j & 2)
- {
- LERPBYTE( 0);
- LERPBYTE( 1);
- LERPBYTE( 2);
- LERPBYTE( 3);
- LERPBYTE( 4);
- LERPBYTE( 5);
- out += 6;
- resamplerow1 += 6;
- resamplerow2 += 6;
- }
- if (j & 1)
- {
- LERPBYTE( 0);
- LERPBYTE( 1);
- LERPBYTE( 2);
- out += 3;
- resamplerow1 += 3;
- resamplerow2 += 3;
- }
- resamplerow1 -= outwidth3;
- resamplerow2 -= outwidth3;
- }
- else
- {
- if (yi != oldy)
- {
- inrow = (unsigned char *)indata + inwidth3*yi;
- if (yi == oldy+1)
- memcpy(resamplerow1, resamplerow2, outwidth3);
- else
- Image_Resample24LerpLine (inrow, resamplerow1, inwidth, outwidth);
- oldy = yi;
- }
- memcpy(out, resamplerow1, outwidth3);
- }
- }
- Mem_Free(resamplerow1);
- resamplerow1 = NULL;
- resamplerow2 = NULL;
-}
-
-void Image_Resample24Nolerp(const void *indata, int inwidth, int inheight, void *outdata, int outwidth, int outheight)
-{
- int i, j, f, inwidth3 = inwidth * 3;
- unsigned frac, fracstep;
- unsigned char *inrow, *out;
- out = (unsigned char *)outdata;
-
- fracstep = inwidth*0x10000/outwidth;
- for (i = 0;i < outheight;i++)
- {
- inrow = (unsigned char *)indata + inwidth3*(i*inheight/outheight);
- frac = fracstep >> 1;
- j = outwidth - 4;
- while (j >= 0)
- {
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- j -= 4;
- }
- if (j & 2)
- {
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- out += 2;
- }
- if (j & 1)
- {
- f = (frac >> 16)*3;*out++ = inrow[f+0];*out++ = inrow[f+1];*out++ = inrow[f+2];frac += fracstep;
- out += 1;
- }
- }
-}
-
/*
================
Image_Resample
================
*/
-void Image_Resample (const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int bytesperpixel, int quality)
+void Image_Resample32(const void *indata, int inwidth, int inheight, int indepth, void *outdata, int outwidth, int outheight, int outdepth, int quality)
{
if (indepth != 1 || outdepth != 1)
{
Con_Printf ("Image_Resample: 3D resampling not supported\n");
return;
}
- if (bytesperpixel == 4)
- {
- if (quality)
- Image_Resample32Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
- else
- Image_Resample32Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
- }
- else if (bytesperpixel == 3)
- {
- if (quality)
- Image_Resample24Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
- else
- Image_Resample24Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
- }
+ if (quality)
+ Image_Resample32Lerp(indata, inwidth, inheight, outdata, outwidth, outheight);
else
- Con_Printf ("Image_Resample: unsupported bytesperpixel %i\n", bytesperpixel);
+ Image_Resample32Nolerp(indata, inwidth, inheight, outdata, outwidth, outheight);
}
// in can be the same as out
-void Image_MipReduce(const unsigned char *in, unsigned char *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth, int bytesperpixel)
+void Image_MipReduce32(const unsigned char *in, unsigned char *out, int *width, int *height, int *depth, int destwidth, int destheight, int destdepth)
{
const unsigned char *inrow;
int x, y, nextrow;
// note: if given odd width/height this discards the last row/column of
// pixels, rather than doing a proper box-filter scale down
inrow = in;
- nextrow = *width * bytesperpixel;
+ nextrow = *width * 4;
if (*width > destwidth)
{
*width >>= 1;
{
// reduce both
*height >>= 1;
- if (bytesperpixel == 4)
+ for (y = 0;y < *height;y++, inrow += nextrow * 2)
{
- for (y = 0;y < *height;y++, inrow += nextrow * 2)
+ for (in = inrow, x = 0;x < *width;x++)
{
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
- out[1] = (unsigned char) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
- out[2] = (unsigned char) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
- out[3] = (unsigned char) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
- out += 4;
- in += 8;
- }
- }
- }
- else if (bytesperpixel == 3)
- {
- for (y = 0;y < *height;y++, inrow += nextrow * 2)
- {
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[3] + in[nextrow ] + in[nextrow+3]) >> 2);
- out[1] = (unsigned char) ((in[1] + in[4] + in[nextrow+1] + in[nextrow+4]) >> 2);
- out[2] = (unsigned char) ((in[2] + in[5] + in[nextrow+2] + in[nextrow+5]) >> 2);
- out += 3;
- in += 6;
- }
+ out[0] = (unsigned char) ((in[0] + in[4] + in[nextrow ] + in[nextrow+4]) >> 2);
+ out[1] = (unsigned char) ((in[1] + in[5] + in[nextrow+1] + in[nextrow+5]) >> 2);
+ out[2] = (unsigned char) ((in[2] + in[6] + in[nextrow+2] + in[nextrow+6]) >> 2);
+ out[3] = (unsigned char) ((in[3] + in[7] + in[nextrow+3] + in[nextrow+7]) >> 2);
+ out += 4;
+ in += 8;
}
}
- else
- Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
}
else
{
// reduce width
- if (bytesperpixel == 4)
- {
- for (y = 0;y < *height;y++, inrow += nextrow)
- {
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[4]) >> 1);
- out[1] = (unsigned char) ((in[1] + in[5]) >> 1);
- out[2] = (unsigned char) ((in[2] + in[6]) >> 1);
- out[3] = (unsigned char) ((in[3] + in[7]) >> 1);
- out += 4;
- in += 8;
- }
- }
- }
- else if (bytesperpixel == 3)
+ for (y = 0;y < *height;y++, inrow += nextrow)
{
- for (y = 0;y < *height;y++, inrow += nextrow)
+ for (in = inrow, x = 0;x < *width;x++)
{
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[3]) >> 1);
- out[1] = (unsigned char) ((in[1] + in[4]) >> 1);
- out[2] = (unsigned char) ((in[2] + in[5]) >> 1);
- out += 3;
- in += 6;
- }
+ out[0] = (unsigned char) ((in[0] + in[4]) >> 1);
+ out[1] = (unsigned char) ((in[1] + in[5]) >> 1);
+ out[2] = (unsigned char) ((in[2] + in[6]) >> 1);
+ out[3] = (unsigned char) ((in[3] + in[7]) >> 1);
+ out += 4;
+ in += 8;
}
}
- else
- Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
}
}
else
{
// reduce height
*height >>= 1;
- if (bytesperpixel == 4)
+ for (y = 0;y < *height;y++, inrow += nextrow * 2)
{
- for (y = 0;y < *height;y++, inrow += nextrow * 2)
+ for (in = inrow, x = 0;x < *width;x++)
{
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[nextrow ]) >> 1);
- out[1] = (unsigned char) ((in[1] + in[nextrow+1]) >> 1);
- out[2] = (unsigned char) ((in[2] + in[nextrow+2]) >> 1);
- out[3] = (unsigned char) ((in[3] + in[nextrow+3]) >> 1);
- out += 4;
- in += 4;
- }
+ out[0] = (unsigned char) ((in[0] + in[nextrow ]) >> 1);
+ out[1] = (unsigned char) ((in[1] + in[nextrow+1]) >> 1);
+ out[2] = (unsigned char) ((in[2] + in[nextrow+2]) >> 1);
+ out[3] = (unsigned char) ((in[3] + in[nextrow+3]) >> 1);
+ out += 4;
+ in += 4;
}
}
- else if (bytesperpixel == 3)
- {
- for (y = 0;y < *height;y++, inrow += nextrow * 2)
- {
- for (in = inrow, x = 0;x < *width;x++)
- {
- out[0] = (unsigned char) ((in[0] + in[nextrow ]) >> 1);
- out[1] = (unsigned char) ((in[1] + in[nextrow+1]) >> 1);
- out[2] = (unsigned char) ((in[2] + in[nextrow+2]) >> 1);
- out += 3;
- in += 3;
- }
- }
- }
- else
- Con_Printf ("Image_MipReduce: unsupported bytesperpixel %i\n", bytesperpixel);
}
else
Con_Printf ("Image_MipReduce: desired size already achieved\n");
projects / xonotic / darkplaces.git / blobdiff