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* XVID MPEG-4 VIDEO CODEC |
* XVID MPEG-4 VIDEO CODEC |
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* - 8bit<->16bit transfer - |
* - 8bit<->16bit transfer - |
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* |
* |
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* This program is free software ; you can redistribute it and/or modify |
* Copyright(C) 2001-2002 Peter Ross <pross@xvid.org> |
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* it under the terms of the GNU General Public License as published by |
* |
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* This file is part of XviD, a free MPEG-4 video encoder/decoder |
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* |
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* XviD is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by |
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* the Free Software Foundation ; either version 2 of the License, or |
* the Free Software Foundation ; either version 2 of the License, or |
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* (at your option) any later version. |
* (at your option) any later version. |
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* |
* |
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* along with this program ; if not, write to the Free Software |
* along with this program ; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
* |
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****************************************************************************/ |
* Under section 8 of the GNU General Public License, the copyright |
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/***************************************************************************** |
* holders of XVID explicitly forbid distribution in the following |
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* |
* countries: |
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* History |
* |
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* |
* - Japan |
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* - 14.06.2002 Changed legal header with the new FSF address |
* - United States of America |
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* - 14.04.2002 added transfer_8to16sub2 |
* |
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* - 07.01.2002 merge functions from compensate; rename functions |
* Linking XviD statically or dynamically with other modules is making a |
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* - 22.12.2001 transfer_8to8add16 limit fix |
* combined work based on XviD. Thus, the terms and conditions of the |
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* - 07.11.2001 initial version; (c)2001 peter ross <pross@cs.rmit.edu.au> |
* GNU General Public License cover the whole combination. |
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* |
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* As a special exception, the copyright holders of XviD give you |
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* permission to link XviD with independent modules that communicate with |
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* XviD solely through the VFW1.1 and DShow interfaces, regardless of the |
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* license terms of these independent modules, and to copy and distribute |
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* the resulting combined work under terms of your choice, provided that |
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* every copy of the combined work is accompanied by a complete copy of |
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* the source code of XviD (the version of XviD used to produce the |
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* combined work), being distributed under the terms of the GNU General |
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* Public License plus this exception. An independent module is a module |
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* which is not derived from or based on XviD. |
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* |
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* Note that people who make modified versions of XviD are not obligated |
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* to grant this special exception for their modified versions; it is |
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* their choice whether to do so. The GNU General Public License gives |
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* permission to release a modified version without this exception; this |
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* exception also makes it possible to release a modified version which |
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* carries forward this exception. |
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* |
* |
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* $Id$ |
* $Id$ |
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* |
* |
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TRANSFER_16TO8COPY_PTR transfer_16to8copy; |
TRANSFER_16TO8COPY_PTR transfer_16to8copy; |
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TRANSFER_8TO16SUB_PTR transfer_8to16sub; |
TRANSFER_8TO16SUB_PTR transfer_8to16sub; |
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TRANSFER_8TO16SUBRO_PTR transfer_8to16subro; |
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TRANSFER_8TO16SUB2_PTR transfer_8to16sub2; |
TRANSFER_8TO16SUB2_PTR transfer_8to16sub2; |
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TRANSFER_16TO8ADD_PTR transfer_16to8add; |
TRANSFER_16TO8ADD_PTR transfer_16to8add; |
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} |
} |
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void |
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transfer_8to16subro_c(int16_t * const dct, |
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const uint8_t * const cur, |
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const uint8_t * ref, |
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const uint32_t stride) |
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{ |
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uint32_t i, j; |
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for (j = 0; j < 8; j++) { |
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for (i = 0; i < 8; i++) { |
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uint8_t c = cur[j * stride + i]; |
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uint8_t r = ref[j * stride + i]; |
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dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
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} |
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} |
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} |
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/* |
/* |
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* C - the current buffer |
* C - the current buffer |
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* R1 - the 1st reference buffer |
* R1 - the 1st reference buffer |
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if (r > 255) { |
if (r > 255) { |
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r = 255; |
r = 255; |
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} |
} |
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//cur[j * stride + i] = r; |
/*cur[j * stride + i] = r; */ |
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dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
dct[j * 8 + i] = (int16_t) c - (int16_t) r; |
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} |
} |
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} |
} |