1745 h_samp1 = cinfo->comp_info[1].h_samp_factor;
1746 h_samp2 = cinfo->comp_info[2].h_samp_factor;
1747
1748 v_samp0 = cinfo->comp_info[0].v_samp_factor;
1749 v_samp1 = cinfo->comp_info[1].v_samp_factor;
1750 v_samp2 = cinfo->comp_info[2].v_samp_factor;
1751
1752 cid0 = cinfo->comp_info[0].component_id;
1753 cid1 = cinfo->comp_info[1].component_id;
1754 cid2 = cinfo->comp_info[2].component_id;
1755
1756 if ((!(cid0 == 1 && cid1 == 2 && cid2 == 3)) &&
1757 ((h_samp1 == h_samp0) && (h_samp2 == h_samp0) &&
1758 (v_samp1 == v_samp0) && (v_samp2 == v_samp0)))
1759 {
1760 cinfo->jpeg_color_space = JCS_RGB;
1761 /* output is already RGB, so it stays the same */
1762 }
1763 }
1764 break;
1765 #ifdef YCCALPHA
1766 case JCS_YCC:
1767 cinfo->out_color_space = JCS_YCC;
1768 break;
1769 #endif
1770 case JCS_YCCK:
1771 if ((cinfo->saw_Adobe_marker) && (cinfo->Adobe_transform != 2)) {
1772 /*
1773 * IJG guesses this is YCCK and emits a warning
1774 * We would rather not guess. Then the user knows
1775 * To read this as a Raster if at all
1776 */
1777 cinfo->jpeg_color_space = JCS_UNKNOWN;
1778 cinfo->out_color_space = JCS_UNKNOWN;
1779 }
1780 break;
1781 case JCS_CMYK:
1782 /*
1783 * IJG assumes all unidentified 4-channels are CMYK.
1784 * We assume that only if the second two channels are
1785 * not subsampled (either horizontally or vertically).
1786 * If they are, we assume YCCK.
1787 */
1788 h_samp0 = cinfo->comp_info[0].h_samp_factor;
1789 h_samp1 = cinfo->comp_info[1].h_samp_factor;
|
1745 h_samp1 = cinfo->comp_info[1].h_samp_factor;
1746 h_samp2 = cinfo->comp_info[2].h_samp_factor;
1747
1748 v_samp0 = cinfo->comp_info[0].v_samp_factor;
1749 v_samp1 = cinfo->comp_info[1].v_samp_factor;
1750 v_samp2 = cinfo->comp_info[2].v_samp_factor;
1751
1752 cid0 = cinfo->comp_info[0].component_id;
1753 cid1 = cinfo->comp_info[1].component_id;
1754 cid2 = cinfo->comp_info[2].component_id;
1755
1756 if ((!(cid0 == 1 && cid1 == 2 && cid2 == 3)) &&
1757 ((h_samp1 == h_samp0) && (h_samp2 == h_samp0) &&
1758 (v_samp1 == v_samp0) && (v_samp2 == v_samp0)))
1759 {
1760 cinfo->jpeg_color_space = JCS_RGB;
1761 /* output is already RGB, so it stays the same */
1762 }
1763 }
1764 break;
1765 case JCS_YCCK:
1766 if ((cinfo->saw_Adobe_marker) && (cinfo->Adobe_transform != 2)) {
1767 /*
1768 * IJG guesses this is YCCK and emits a warning
1769 * We would rather not guess. Then the user knows
1770 * To read this as a Raster if at all
1771 */
1772 cinfo->jpeg_color_space = JCS_UNKNOWN;
1773 cinfo->out_color_space = JCS_UNKNOWN;
1774 }
1775 break;
1776 case JCS_CMYK:
1777 /*
1778 * IJG assumes all unidentified 4-channels are CMYK.
1779 * We assume that only if the second two channels are
1780 * not subsampled (either horizontally or vertically).
1781 * If they are, we assume YCCK.
1782 */
1783 h_samp0 = cinfo->comp_info[0].h_samp_factor;
1784 h_samp1 = cinfo->comp_info[1].h_samp_factor;
|