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Diffstat (limited to 'backend/genesys_conv_hlp.cc')
-rw-r--r-- | backend/genesys_conv_hlp.cc | 345 |
1 files changed, 0 insertions, 345 deletions
diff --git a/backend/genesys_conv_hlp.cc b/backend/genesys_conv_hlp.cc deleted file mode 100644 index 7663a87..0000000 --- a/backend/genesys_conv_hlp.cc +++ /dev/null @@ -1,345 +0,0 @@ -/* sane - Scanner Access Now Easy. - - Copyright (C) 2005 Pierre Willenbrock <pierre@pirsoft.dnsalias.org> - - This file is part of the SANE package. - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place - Suite 330, Boston, - MA 02111-1307, USA. - - As a special exception, the authors of SANE give permission for - additional uses of the libraries contained in this release of SANE. - - The exception is that, if you link a SANE library with other files - to produce an executable, this does not by itself cause the - resulting executable to be covered by the GNU General Public - License. Your use of that executable is in no way restricted on - account of linking the SANE library code into it. - - This exception does not, however, invalidate any other reasons why - the executable file might be covered by the GNU General Public - License. - - If you submit changes to SANE to the maintainers to be included in - a subsequent release, you agree by submitting the changes that - those changes may be distributed with this exception intact. - - If you write modifications of your own for SANE, it is your choice - whether to permit this exception to apply to your modifications. - If you do not wish that, delete this exception notice. -*/ - -/* - * Conversion filters for genesys backend - */ - -static SANE_Status -FUNC_NAME(genesys_reorder_components_cis) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int pixels) -{ - unsigned int x, y; - uint8_t *src[3]; - uint8_t *dst = dst_data; - unsigned int rest = pixels * 2 * BYTES_PER_COMPONENT; - - src[0] = src_data + pixels * BYTES_PER_COMPONENT * 0; - src[1] = src_data + pixels * BYTES_PER_COMPONENT * 1; - src[2] = src_data + pixels * BYTES_PER_COMPONENT * 2; - - for(y = 0; y < lines; y++) { - for(x = 0; x < pixels; x++) { - -#ifndef DOUBLE_BYTE - *dst++ = *src[0]++; - *dst++ = *src[1]++; - *dst++ = *src[2]++; -#else -# ifndef WORDS_BIGENDIAN - *dst++ = *src[0]++; - *dst++ = *src[0]++; - *dst++ = *src[1]++; - *dst++ = *src[1]++; - *dst++ = *src[2]++; - *dst++ = *src[2]++; -# else - *dst++ = src[0][1]; - *dst++ = src[0][0]; - *dst++ = src[1][1]; - *dst++ = src[1][0]; - *dst++ = src[2][1]; - *dst++ = src[2][0]; - src[0] += 2; - src[1] += 2; - src[2] += 2; -# endif -#endif - } - - src[0] += rest; - src[1] += rest; - src[2] += rest; - } - return SANE_STATUS_GOOD; -} - -static SANE_Status -FUNC_NAME(genesys_reorder_components_cis_bgr) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int pixels) -{ - unsigned int x, y; - uint8_t *src[3]; - uint8_t *dst = dst_data; - unsigned int rest = pixels * 2 * BYTES_PER_COMPONENT; - - src[0] = src_data + pixels * BYTES_PER_COMPONENT * 0; - src[1] = src_data + pixels * BYTES_PER_COMPONENT * 1; - src[2] = src_data + pixels * BYTES_PER_COMPONENT * 2; - - for(y = 0; y < lines; y++) { - for(x = 0; x < pixels; x++) { -#ifndef DOUBLE_BYTE - *dst++ = *src[2]++; - *dst++ = *src[1]++; - *dst++ = *src[0]++; -#else -# ifndef WORDS_BIGENDIAN - *dst++ = *src[2]++; - *dst++ = *src[2]++; - *dst++ = *src[1]++; - *dst++ = *src[1]++; - *dst++ = *src[0]++; - *dst++ = *src[0]++; -# else - *dst++ = src[2][1]; - *dst++ = src[2][0]; - *dst++ = src[1][1]; - *dst++ = src[1][0]; - *dst++ = src[0][1]; - *dst++ = src[0][0]; - src[0] += 2; - src[1] += 2; - src[2] += 2; -# endif -#endif - } - - src[0] += rest; - src[1] += rest; - src[2] += rest; - } - return SANE_STATUS_GOOD; -} - -static SANE_Status -FUNC_NAME(genesys_reorder_components_bgr) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int pixels) -{ - unsigned int c; - uint8_t *src = src_data; - uint8_t *dst = dst_data; - - for(c = 0; c < lines * pixels; c++) { - -#ifndef DOUBLE_BYTE - *dst++ = src[2]; - *dst++ = src[1]; - *dst++ = src[0]; - src += 3; -#else -# ifndef WORDS_BIGENDIAN - *dst++ = src[2 * 2 + 0]; - *dst++ = src[2 * 2 + 1]; - *dst++ = src[1 * 2 + 0]; - *dst++ = src[1 * 2 + 1]; - *dst++ = src[0 * 2 + 0]; - *dst++ = src[0 * 2 + 1]; -# else - *dst++ = src[2 * 2 + 1]; - *dst++ = src[2 * 2 + 0]; - *dst++ = src[1 * 2 + 1]; - *dst++ = src[1 * 2 + 0]; - *dst++ = src[0 * 2 + 1]; - *dst++ = src[0 * 2 + 0]; -# endif - src += 3 * 2; -#endif - - } - return SANE_STATUS_GOOD; -} - -#if defined(DOUBLE_BYTE) && defined(WORDS_BIGENDIAN) -static SANE_Status -FUNC_NAME(genesys_reorder_components_endian) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int pixels, - unsigned int channels) -{ - unsigned int c; - uint8_t *src = src_data; - uint8_t *dst = dst_data; - - for(c = 0; c < lines * pixels * channels; c++) { - *dst++ = src[1]; - *dst++ = src[0]; - src += 2; - } -return SANE_STATUS_GOOD; -} -#endif /*defined(DOUBLE_BYTE) && defined(WORDS_BIGENDIAN)*/ - - -static SANE_Status -FUNC_NAME(genesys_reverse_ccd) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int components_per_line, - unsigned int *ccd_shift, - unsigned int component_count) -{ - unsigned int x, y, c; - COMPONENT_TYPE *src = (COMPONENT_TYPE *)src_data; - COMPONENT_TYPE *dst = (COMPONENT_TYPE *)dst_data; - COMPONENT_TYPE *srcp; - COMPONENT_TYPE *dstp; - unsigned int pitch = components_per_line; - unsigned int ccd_shift_pitch[12]; - unsigned int *csp; - - for (c = 0; c < component_count; c++) - ccd_shift_pitch[c] = ccd_shift[c] * pitch; - -/* - * cache efficiency: - we are processing a single line component_count times, so it should fit - into the cpu cache for maximum efficiency. our lines take - maximum 252kb(3 channels, 16bit, 2400dpi, full gl841 shading range) - * instruction efficiency: - the innermost loop runs long and consists of 3 adds, one compare, - 2 derefences. - */ -/* - for (y = 0; y < lines; y++) { - csp = ccd_shift_pitch; - for (c = 0; c < component_count; c++) { - srcp = src + c + *csp++; - dstp = dst + c; - for (x = 0; x < pitch; x += component_count) { - *dstp = *srcp; - srcp += component_count; - dstp += component_count; - } - } - dst += pitch; - src += pitch; - } - */ -/* - * cache efficency: - here only line_dist_pitch needs to stay in cache. 12*4 = 48 bytes - * instruction efficiency: - we have a short running inner loop, consisting of 4 incs, 2 compare, 1 add, - 2 dereference and 1 indexed dereference. - the enclosing loop is long running, consisting of 1 add, 1 compare. - */ - srcp = src; - dstp = dst; - for (y = 0; y < lines; y++) { - for (x = 0; x < pitch; x += component_count) { - csp = ccd_shift_pitch; - for (c = 0; c < component_count && c + x < pitch; c++) { - *dstp = srcp[*csp++]; - dstp++; - srcp++; - } - } - } - return SANE_STATUS_GOOD; -} - -static SANE_Status -FUNC_NAME(genesys_shrink_lines) ( - uint8_t *src_data, - uint8_t *dst_data, - unsigned int lines, - unsigned int src_pixels, - unsigned int dst_pixels, - unsigned int channels) -{ - unsigned int dst_x, src_x, y, c, cnt; - unsigned int avg[3]; - unsigned int count; - COMPONENT_TYPE *src = (COMPONENT_TYPE *)src_data; - COMPONENT_TYPE *dst = (COMPONENT_TYPE *)dst_data; - - if (src_pixels > dst_pixels) { -/*average*/ - for (c = 0; c < channels; c++) - avg[c] = 0; - for(y = 0; y < lines; y++) { - cnt = src_pixels / 2; - src_x = 0; - for (dst_x = 0; dst_x < dst_pixels; dst_x++) { - count = 0; - while (cnt < src_pixels && src_x < src_pixels) { - cnt += dst_pixels; - - for (c = 0; c < channels; c++) - avg[c] += *src++; - src_x++; - count++; - } - cnt -= src_pixels; - - for (c = 0; c < channels; c++) { - *dst++ = avg[c] / count; - avg[c] = 0; - } - } - } - } else { -/*interpolate. copy pixels*/ - for(y = 0; y < lines; y++) { - cnt = dst_pixels / 2; - dst_x = 0; - for (src_x = 0; src_x < src_pixels; src_x++) { - for (c = 0; c < channels; c++) - avg[c] = *src++; - while ((cnt < dst_pixels || src_x + 1 == src_pixels) && - dst_x < dst_pixels) { - cnt += src_pixels; - - for (c = 0; c < channels; c++) - *dst++ = avg[c]; - dst_x++; - } - cnt -= dst_pixels; - } - } - } - return SANE_STATUS_GOOD; -} |