+++ /dev/null
-/*
- *
- * mblock_sub44_sads.c
- * Copyright (C) 2000 Andrew Stevens <as@comlab.ox.ac.uk>
- *
- * Fast block sum-absolute difference computation for a rectangular area 4*x
- * by y where y > h against a 4 by h block.
- *
- * Used for 4*4 sub-sampled motion compensation calculations.
- *
- * This is actually just a shell that uses templates from the included
- * file "mblock_sub44_sads_x86_h.c". I didn't trust the compiler to do a good
- * job on nested inlining. One day I'll experiment.
- *
- *
- * This file is part of mpeg2enc, a free MPEG-2 video stream encoder
- * based on the original MSSG reference design
- *
- * mpeg2enc is free software; you can redistribute new parts
- * and/or modify 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.
- *
- * mpeg2dec 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.
- *
- * See the files for those sections (c) MSSG
- *
- * 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
- */
-
-#include "config.h"
-#include "global.h"
-#include "mpeg2enc.h"
-#include "simd.h"
-#include "attributes.h"
-#include "mmx.h"
-#include "fastintfns.h"
-
-/*
- Register usage:
- mm0-mm3 Hold the current row
- mm4 Used for accumulating partial SAD
- mm7 Holds zero
- */
-
-static inline void mmx_zero_reg (void)
-{
- /* load 0 into mm7 */
- pxor_r2r (mm7, mm7);
-}
-
-/*
- * Load a 4*4 block of 4*4 sub-sampled pels (qpels) into the MMX
- * registers
- *
- */
-
-static __inline__ void load_blk(uint8_t *blk, uint32_t rowstride, int h)
-{
-// Required to get GCC 4.0 to use the right registers as the source argument to
-// movq
- uint8_t *blk2 = blk + rowstride * 2;
-
- movq_m2r( *blk, mm0);
- blk += rowstride;
- movq_m2r( *blk, mm1);
-
-
- if( h == 2 )
- return;
-
-
- movq_m2r( *blk2, mm2);
- blk2 += rowstride;
- movq_m2r( *blk2, mm3);
-}
-
-/*
- * Do a shift right on the 4*4 block in the MMX registers
- *
- */
-static __inline__ void shift_blk(const uint32_t shift)
-{
- psrlq_i2r( shift,mm0);
- psrlq_i2r( shift,mm1);
- psrlq_i2r( shift,mm2);
- psrlq_i2r( shift,mm3);
-}
-
-/*
- * Compute the Sum absolute differences between the 4*h block in
- * the MMX registers
- *
- * and the 4*h block pointed to by refblk
- *
- * h == 2 || h == 4
- *
- * TODO: Currently always loads and shifts 4*4 even if 4*2 is required.
- *
- */
-
-static __inline__ int qblock_sad_mmxe(uint8_t *refblk,
- uint32_t h,
- uint32_t rowstride)
-{
- int res;
- pxor_r2r (mm4,mm4);
-
- movq_r2r (mm0,mm5); /* First row */
- movd_m2r (*refblk, mm6);
- pxor_r2r ( mm7, mm7);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- psadbw_r2r ( mm5, mm6);
- paddw_r2r ( mm6, mm4 );
-
-
-
- movq_r2r (mm1,mm5); /* Second row */
- movd_m2r (*refblk, mm6);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- psadbw_r2r ( mm5, mm6);
- paddw_r2r ( mm6, mm4 );
-
- if( h == 4 )
- {
-
- movq_r2r (mm2,mm5); /* Third row */
- movd_m2r (*refblk, mm6);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- psadbw_r2r ( mm5, mm6);
- paddw_r2r ( mm6, mm4 );
-
-
- movq_r2r (mm3,mm5); /* Fourth row */
- movd_m2r (*refblk, mm6);
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- psadbw_r2r ( mm5, mm6);
- paddw_r2r ( mm6, mm4 );
-
- }
- movd_r2m ( mm4, res );
-
- return res;
-}
-
-
-
-static __inline__ int qblock_sad_mmx(uint8_t *refblk,
- uint32_t h,
- uint32_t rowstride)
-{
- int res;
- pxor_r2r (mm4,mm4);
-
- movq_r2r (mm0,mm5); /* First row */
- movd_m2r (*refblk, mm6);
- pxor_r2r ( mm7, mm7);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
-
- punpcklbw_r2r ( mm7, mm6);
-
- movq_r2r ( mm5, mm7);
- psubusw_r2r ( mm6, mm5);
-
- psubusw_r2r ( mm7, mm6);
-
- paddw_r2r ( mm5, mm4);
- paddw_r2r ( mm6, mm4 );
-
-
-
- movq_r2r (mm1,mm5); /* Second row */
- movd_m2r (*refblk, mm6);
- pxor_r2r ( mm7, mm7);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- movq_r2r ( mm5, mm7);
- psubusw_r2r ( mm6, mm5);
- psubusw_r2r ( mm7, mm6);
- paddw_r2r ( mm5, mm4);
- paddw_r2r ( mm6, mm4 );
-
- if( h == 4 )
- {
-
- movq_r2r (mm2,mm5); /* Third row */
- movd_m2r (*refblk, mm6);
- pxor_r2r ( mm7, mm7);
- refblk += rowstride;
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- movq_r2r ( mm5, mm7);
- psubusw_r2r ( mm6, mm5);
- psubusw_r2r ( mm7, mm6);
- paddw_r2r ( mm5, mm4);
- paddw_r2r ( mm6, mm4 );
-
- movq_r2r (mm3,mm5); /* Fourth row */
- movd_m2r (*refblk, mm6);
- pxor_r2r ( mm7, mm7);
- punpcklbw_r2r ( mm7, mm5);
- punpcklbw_r2r ( mm7, mm6);
- movq_r2r ( mm5, mm7);
- psubusw_r2r ( mm6, mm5);
- psubusw_r2r ( mm7, mm6);
- paddw_r2r ( mm5, mm4);
- paddw_r2r ( mm6, mm4 );
- }
-
-
- movq_r2r ( mm4, mm5 );
- psrlq_i2r ( 32, mm5 );
- paddw_r2r ( mm5, mm4 );
- movq_r2r ( mm4, mm6 );
- psrlq_i2r ( 16, mm6 );
- paddw_r2r ( mm6, mm4 );
- movd_r2m ( mm4, res );
-
- return res & 0xffff;
-}
-
-
-/*
- * Do the Extended MMX versions
- */
-#define SIMD_SUFFIX(x) x##_mmxe
-#include "mblock_sub44_sads_x86_h.c"
-#undef SIMD_SUFFIX
-/*
- * Do the original MMX versions
- */
-#define SIMD_SUFFIX(x) x##_mmx
-#include "mblock_sub44_sads_x86_h.c"
-#undef SIMD_SUFFIX
-
-
-
-
projects / goodguy / history.git / blobdiff