dev/stbi/stb_image.c

1150    } img_comp[4];
1327    dc = j->img_comp[b].dc_pred + diff;
1328    j->img_comp[b].dc_pred = dc;
1506    j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = 0;
1527       int w = (z->img_comp[n].x+7) >> 3;
1528       int h = (z->img_comp[n].y+7) >> 3;
1531             if (!decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0;
1533             stbi_idct_installed(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]);
1535             idct_block(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]);
1557                for (y=0; y < z->img_comp[n].v; ++y) {
1558                   for (x=0; x < z->img_comp[n].h; ++x) {
1559                      int x2 = (i*z->img_comp[n].h + x)*8;
1560                      int y2 = (j*z->img_comp[n].v + y)*8;
1561                      if (!decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0;
1563                      stbi_idct_installed(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]);
1565                      idct_block(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]);
1665          if (z->img_comp[which].id == id)
1668       z->img_comp[which].hd = q >> 4;   if (z->img_comp[which].hd > 3) return e("bad DC huff","Corrupt JPEG");
1669       z->img_comp[which].ha = q & 15;   if (z->img_comp[which].ha > 3) return e("bad AC huff","Corrupt JPEG");
1691       z->img_comp[i].data = NULL;
1692       z->img_comp[i].linebuf = NULL;
1698       z->img_comp[i].id = get8(s);
1699       if (z->img_comp[i].id != i+1)   // JFIF requires
1700          if (z->img_comp[i].id != i)  // some version of jpegtran outputs non-JFIF-compliant files!
1703       z->img_comp[i].h = (q >> 4);  if (!z->img_comp[i].h || z->img_comp[i].h > 4) return e("bad H","Corrupt JPEG");
1704       z->img_comp[i].v = q & 15;    if (!z->img_comp[i].v || z->img_comp[i].v > 4) return e("bad V","Corrupt JPEG");
1705       z->img_comp[i].tq = get8(s);  if (z->img_comp[i].tq > 3) return e("bad TQ","Corrupt JPEG");
1713       if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h;
1714       if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v;
1727       z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max;
1728       z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max;
1733       z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8;
1734       z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8;
1735       z->img_comp[i].raw_data = MALLOC(z->img_comp[i].w2 * z->img_comp[i].h2+15);
1736       if (z->img_comp[i].raw_data == NULL) {
1738             FREE(z->img_comp[i].raw_data);
1739             z->img_comp[i].data = NULL;
1744       z->img_comp[i].data = (uint8*) (((size_t) z->img_comp[i].raw_data + 15) & ~15);
1745       z->img_comp[i].linebuf = NULL;
1945       if (j->img_comp[i].data) {
1946          FREE(j->img_comp[i].raw_data);
1947          j->img_comp[i].data = NULL;
1949       if (j->img_comp[i].linebuf) {
1950          FREE(j->img_comp[i].linebuf);
1951          j->img_comp[i].linebuf = NULL;
1998          z->img_comp[k].linebuf = MALLOC(z->s.img_x + 3);
1999          if (!z->img_comp[k].linebuf) { cleanup_jpeg(z); return epuc("outofmem", "Out of memory"); }
2001          r->hs      = z->img_h_max / z->img_comp[k].h;
2002          r->vs      = z->img_v_max / z->img_comp[k].v;
2006          r->line0   = r->line1 = z->img_comp[k].data;
2025             coutput[k] = r->resample(z->img_comp[k].linebuf,
2032                if (++r->ypos < z->img_comp[k].y)
2033                   r->line1 += z->img_comp[k].w2;