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/***************************************************************************** |
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* |
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* XVID MPEG-4 VIDEO CODEC |
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* - 8x8 block-based halfpel interpolation - headers |
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* |
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* Copyright(C) 2002 Peter Ross <pross@xvid.org> |
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* |
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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 |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* 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 |
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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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* |
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* - Japan |
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* - United States of America |
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* |
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* Linking XviD statically or dynamically with other modules is making a |
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* combined work based on XviD. Thus, the terms and conditions of the |
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* 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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* $Id$ |
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* |
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****************************************************************************/ |
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#include "../utils/mem_transfer.h" |
#include "../utils/mem_transfer.h" |
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typedef void (INTERPOLATE8X8) (uint8_t * const dst, |
typedef void (INTERPOLATE8X8) (uint8_t * const dst, |
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INTERPOLATE8X8 interpolate8x8_halfpel_v_3dn; |
INTERPOLATE8X8 interpolate8x8_halfpel_v_3dn; |
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INTERPOLATE8X8 interpolate8x8_halfpel_hv_3dn; |
INTERPOLATE8X8 interpolate8x8_halfpel_hv_3dn; |
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INTERPOLATE8X8 interpolate8x8_halfpel_h_ia64; |
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INTERPOLATE8X8 interpolate8x8_halfpel_v_ia64; |
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INTERPOLATE8X8 interpolate8x8_halfpel_hv_ia64; |
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void interpolate8x8_c(uint8_t * const dst, |
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const uint8_t * const src, |
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const uint32_t x, |
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const uint32_t y, |
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const uint32_t stride); |
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static __inline void |
static __inline void |
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interpolate8x8_switch(uint8_t * const cur, |
interpolate8x8_switch(uint8_t * const cur, |
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const uint8_t * const refn, |
const uint8_t * const refn, |
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{ |
{ |
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int32_t ddx, ddy; |
int32_t ddx, ddy; |
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switch (((dx & 1) << 1) + (dy & 1)) // ((dx%2)?2:0)+((dy%2)?1:0) |
switch (((dx & 1) << 1) + (dy & 1)) /* ((dx%2)?2:0)+((dy%2)?1:0) */ |
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{ |
{ |
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case 0: |
case 0: |
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ddx = dx / 2; |
ddx = dx / 2; |
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ddy = dy / 2; |
ddy = dy / 2; |
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transfer8x8_copy(cur + y * stride + x, |
transfer8x8_copy(cur + y * stride + x, |
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refn + (y + ddy) * stride + x + ddx, stride); |
refn + (int)((y + ddy) * stride + x + ddx), stride); |
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break; |
break; |
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case 1: |
case 1: |
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ddx = dx / 2; |
ddx = dx / 2; |
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ddy = (dy - 1) / 2; |
ddy = (dy - 1) / 2; |
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interpolate8x8_halfpel_v(cur + y * stride + x, |
interpolate8x8_halfpel_v(cur + y * stride + x, |
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refn + (y + ddy) * stride + x + ddx, stride, |
refn + (int)((y + ddy) * stride + x + ddx), stride, |
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rounding); |
rounding); |
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break; |
break; |
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ddx = (dx - 1) / 2; |
ddx = (dx - 1) / 2; |
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ddy = dy / 2; |
ddy = dy / 2; |
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interpolate8x8_halfpel_h(cur + y * stride + x, |
interpolate8x8_halfpel_h(cur + y * stride + x, |
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refn + (y + ddy) * stride + x + ddx, stride, |
refn + (int)((y + ddy) * stride + x + ddx), stride, |
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rounding); |
rounding); |
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break; |
break; |
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ddx = (dx - 1) / 2; |
ddx = (dx - 1) / 2; |
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ddy = (dy - 1) / 2; |
ddy = (dy - 1) / 2; |
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interpolate8x8_halfpel_hv(cur + y * stride + x, |
interpolate8x8_halfpel_hv(cur + y * stride + x, |
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refn + (y + ddy) * stride + x + ddx, stride, |
refn + (int)((y + ddy) * stride + x + ddx), stride, |
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rounding); |
rounding); |
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break; |
break; |
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} |
} |
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} |
} |
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void interpolate8x8_c(uint8_t * const dst, |
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const uint8_t * const src, |
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const uint32_t x, |
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const uint32_t y, |
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const uint32_t stride); |
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