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;;; predcomp_00_mmxe.s:
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;;; Extended MMX prediction composition
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;;; routines handling the four different interpolation cases...
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;;; Copyright (C) 2000 Andrew Stevens <as@comlab.ox.ac.uk>
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;;; This program is free software; you can reaxstribute it and/or
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;;; modify it under the terms of the GNU General Public License
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;;; as published by the Free Software Foundation; either version 2
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;;; of the License, or (at your option) any later version.
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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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;;; 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
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;;; The no interpolation case...
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global predcomp_00_mmxe
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;;; void predcomp_<ix><iy>_mmxe(char *src,char *dst,int lx, int w, int h, int mask);
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;;; ix - Interpolation in x iy - Interpolation in y
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;;; mm1 = one's mask for src
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;;; mm0 = zero mask for src...
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push ebp ; save frame pointer
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mov ebx, [ebp+8] ; get psrc
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mov eax, [ebp+12] ; get pdst
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mov edx, [ebp+16] ; get lx
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mov edi, [ebp+20] ; get w
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mov ecx, [ebp+24] ; get h
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;; Extend addflag into bit-mask
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jmp predrow00 ; align for speed
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movq mm4, [ebx] ; first 8 bytes of row
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movq mm4, [ebx+8] ; first 8 bytes of row
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add eax, edx ; update pointer to next row
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sub ecx, 1 ; check h left
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;;; The x-axis interpolation case...
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global predcomp_10_mmxe
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push ebp ; save frame pointer
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mov ebx, [ebp+8] ; get psrc
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mov eax, [ebp+12] ; get pdst
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mov edx, [ebp+16] ; get lx
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mov edi, [ebp+20] ; get w
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mov ecx, [ebp+24] ; get h
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;; Extend addflag into bit-mask
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jmp predrow10 ; align for speed
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movq mm4, [ebx] ; first 8 bytes row: avg src in x
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pavgb mm4, mm2 ; combine
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movq mm4, [ebx+8] ; 2nd 8 bytes row: avg src in x
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pavgb mm4, mm2 ; combine
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add eax, edx ; update pointer to next row
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sub ecx, 1 ; check h left
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;;; The x-axis and y-axis interpolation case...
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global predcomp_11_mmxe
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push ebp ; save frame pointer
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mov ebx, [ebp+8] ; get psrc
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mov eax, [ebp+12] ; get pdst
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mov edx, [ebp+16] ; get lx
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mov edi, [ebp+20] ; get w
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mov ecx, [ebp+24] ; get h
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;; Extend addflag into bit-mask
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jmp predrow11 ; align for speed
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movq mm4, [ebx] ; mm4 and mm6 accumulate partial sums for interp.
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add ebx, edx ; update pointer to next row
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movq mm5, [ebx] ; first 8 bytes 1st row: avg src in x
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punpcklbw mm5, mm2 ; Accumulate partial interpolation
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;; Now round and repack...
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sub ebx, edx ; Back to 1st row
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movq mm4, [ebx+8] ; mm4 and mm6 accumulate partial sums for interp.
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add ebx, edx ; update pointer to next row
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movq mm5, [ebx+8] ; first 8 bytes 1st row: avg src in x
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punpcklbw mm5, mm2 ; Accumulate partial interpolation
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;; Now round and repack...
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add eax, edx ; update pointer to next row
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sub ecx, 1 ; check h left
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;;; The y-axis interpolation case...
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global predcomp_01_mmxe
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push ebp ; save frame pointer
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mov ebx, [ebp+8] ; get psrc
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mov eax, [ebp+12] ; get pdst
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mov edx, [ebp+16] ; get lx
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mov edi, [ebp+20] ; get w
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mov ecx, [ebp+24] ; get h
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;; Extend addflag into bit-mask
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jmp predrow01 ; align for speed
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movq mm4, [ebx] ; first 8 bytes row
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add ebx, edx ; update pointer to next row
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pavgb mm4, [ebx] ; Average in y
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sub ebx, edx ; Back to prev row
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movq mm4, [ebx+8] ; first 8 bytes row
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add ebx, edx ; update pointer to next row
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pavgb mm4, [ebx+8] ; Average in y
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add eax, edx ; update pointer to next row
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sub ecx, 1 ; check h left
added
removed
avidemux/mpeg2enc/predcomp_mmxe.s
