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435a566751
* sumatrapdf - vendor import * everything compiles (libjpeg, poppler, fitz, sumatrapdf) * does NOT link (remove the comment tags in the parent directory.rbuild file (rosapps dir) to build it) svn path=/trunk/; revision=29295
128 lines
2.5 KiB
C
128 lines
2.5 KiB
C
#include "fitz-base.h"
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#include "fitz-world.h"
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#include "fitz-draw.h"
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fz_error *
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fz_newpixmap(fz_pixmap **pixp, int x, int y, int w, int h, int n)
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{
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fz_pixmap *pix;
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pix = *pixp = fz_malloc(sizeof(fz_pixmap));
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if (!pix)
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return fz_outofmem;
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pix->x = x;
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pix->y = y;
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pix->w = w;
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pix->h = h;
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pix->n = n;
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pix->samples = fz_malloc(pix->w * pix->h * pix->n * sizeof(fz_sample));
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if (!pix->samples) {
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fz_free(pix);
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return fz_outofmem;
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}
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return nil;
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}
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fz_error *
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fz_newpixmapwithrect(fz_pixmap **pixp, fz_irect r, int n)
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{
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return fz_newpixmap(pixp,
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r.x0, r.y0,
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r.x1 - r.x0,
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r.y1 - r.y0, n);
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}
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fz_error *
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fz_newpixmapcopy(fz_pixmap **pixp, fz_pixmap *old)
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{
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fz_error *error;
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error = fz_newpixmap(pixp, old->x, old->y, old->w, old->h, old->n);
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if (error)
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return error;
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memcpy((*pixp)->samples, old->samples, old->w * old->h * old->n);
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return nil;
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}
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void
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fz_droppixmap(fz_pixmap *pix)
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{
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fz_free(pix->samples);
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fz_free(pix);
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}
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void
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fz_clearpixmap(fz_pixmap *pix)
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{
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memset(pix->samples, 0, pix->w * pix->h * pix->n * sizeof(fz_sample));
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}
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void
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fz_gammapixmap(fz_pixmap *pix, float gamma)
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{
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unsigned char table[256];
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int n = pix->w * pix->h * pix->n;
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unsigned char *p = pix->samples;
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int i;
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for (i = 0; i < 256; i++)
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table[i] = CLAMP(pow(i / 255.0, gamma) * 255.0, 0, 255);
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while (n--)
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*p = table[*p]; p++;
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}
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void
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fz_debugpixmap(fz_pixmap *pix)
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{
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if (pix->n == 4)
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{
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int x, y;
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FILE *ppm = fopen("out.ppm", "wb");
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FILE *pgm = fopen("out.pgm", "wb");
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fprintf(ppm, "P6\n%d %d\n255\n", pix->w, pix->h);
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fprintf(pgm, "P5\n%d %d\n255\n", pix->w, pix->h);
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for (y = 0; y < pix->h; y++)
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for (x = 0; x < pix->w; x++)
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{
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int a = pix->samples[x * pix->n + y * pix->w * pix->n + 0];
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int r = pix->samples[x * pix->n + y * pix->w * pix->n + 1];
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int g = pix->samples[x * pix->n + y * pix->w * pix->n + 2];
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int b = pix->samples[x * pix->n + y * pix->w * pix->n + 3];
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putc(a, pgm);
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putc(r, ppm);
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putc(g, ppm);
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putc(b, ppm);
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}
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if (ppm)
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fclose(ppm);
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if (pgm)
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fclose(pgm);
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}
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else if (pix->n == 2)
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{
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int x, y;
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FILE *pgm = fopen("out.pgm", "wb");
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fprintf(pgm, "P5\n%d %d\n255\n", pix->w, pix->h);
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for (y = 0; y < pix->h; y++)
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for (x = 0; x < pix->w; x++)
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{
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putc(pix->samples[y * pix->w * 2 + x * 2 + 1], pgm);
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}
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fclose(pgm);
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}
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else if (pix->n == 1)
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{
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FILE *pgm = fopen("out.pgm", "w");
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fprintf(pgm, "P5\n%d %d\n255\n", pix->w, pix->h);
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fwrite(pix->samples, 1, pix->w * pix->h, pgm);
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fclose(pgm);
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}
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}
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