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;/**************************************************************************** |
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; * |
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; * XVID MPEG-4 VIDEO CODEC |
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; * - 3dne Quantization/Dequantization - |
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; * |
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; * Copyright (C) 2002-2003 Peter Ross <pross@xvid.org> |
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; * 2002 Jaan Kalda |
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; * |
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; * This program is free software ; you can redistribute it and/or modify |
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; * it 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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; * $Id$ |
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; * |
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; ***************************************************************************/ |
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; _3dne functions are compatible with iSSE, but are optimized specifically |
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; for K7 pipelines |
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%define SATURATE |
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BITS 32 |
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%macro cglobal 1 |
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%ifdef PREFIX |
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global _%1 |
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%define %1 _%1 |
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%else |
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global %1 |
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%endif |
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%endmacro |
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|
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%macro cextern 1 |
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%ifdef PREFIX |
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extern _%1 |
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%define %1 _%1 |
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%else |
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extern %1 |
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%endif |
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%endmacro |
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|
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;============================================================================= |
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; Local data |
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;============================================================================= |
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|
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%ifdef FORMAT_COFF |
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SECTION .rodata data |
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%else |
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SECTION .rodata data align=16 |
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%endif |
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|
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ALIGN 8 |
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mmzero: |
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dd 0,0 |
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mmx_one: |
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times 4 dw 1 |
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|
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;----------------------------------------------------------------------------- |
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; divide by 2Q table |
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;----------------------------------------------------------------------------- |
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|
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ALIGN 16 |
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mmx_divs: ;i>2 |
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%assign i 1 |
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%rep 31 |
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times 4 dw ((1 << 15) / i + 1) |
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%assign i i+1 |
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%endrep |
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|
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ALIGN 16 |
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mmx_div: ;quant>2 |
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times 4 dw 65535 ; the div by 2 formula will overflow for the case |
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; quant=1 but we don't care much because quant=1 |
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; is handled by a different piece of code that |
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; doesn't use this table. |
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%assign quant 2 |
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%rep 31 |
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times 4 dw ((1 << 16) / quant + 1) |
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%assign quant quant+1 |
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%endrep |
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|
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%macro FIXX 1 |
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dw (1 << 16) / (%1) + 1 |
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%endmacro |
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|
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%define nop4 db 08Dh, 074h, 026h,0 |
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%define nop3 add esp, byte 0 |
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%define nop2 mov esp, esp |
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%define nop7 db 08dh, 02ch, 02dh,0,0,0,0 |
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%define nop6 add ebp, dword 0 |
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|
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;----------------------------------------------------------------------------- |
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; quantd table |
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;----------------------------------------------------------------------------- |
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|
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%define VM18P 3 |
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%define VM18Q 4 |
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|
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ALIGN 16 |
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quantd: |
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%assign i 1 |
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%rep 31 |
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times 4 dw (((VM18P*i) + (VM18Q/2)) / VM18Q) |
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%assign i i+1 |
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%endrep |
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|
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;----------------------------------------------------------------------------- |
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; multiple by 2Q table |
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;----------------------------------------------------------------------------- |
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|
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ALIGN 16 |
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mmx_mul_quant: |
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%assign i 1 |
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%rep 31 |
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times 4 dw i |
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%assign i i+1 |
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%endrep |
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|
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;----------------------------------------------------------------------------- |
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; saturation limits |
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;----------------------------------------------------------------------------- |
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|
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ALIGN 16 |
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mmx_32767_minus_2047: |
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times 4 dw (32767-2047) |
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mmx_32768_minus_2048: |
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times 4 dw (32768-2048) |
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mmx_2047: |
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times 4 dw 2047 |
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mmx_minus_2048: |
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times 4 dw (-2048) |
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zero: |
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times 4 dw 0 |
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|
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int_div: |
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dd 0 |
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%assign i 1 |
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%rep 255 |
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dd (1 << 17) / ( i) + 1 |
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%assign i i+1 |
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%endrep |
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|
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;============================================================================= |
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; Code |
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;============================================================================= |
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SECTION .text |
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cglobal quant_mpeg_intra_xmm |
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cglobal quant_mpeg_inter_xmm |
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cglobal dequant_mpeg_intra_3dne |
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cglobal dequant_mpeg_inter_3dne |
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|
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;----------------------------------------------------------------------------- |
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; |
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; uint32_t quant_mpeg_intra_xmm(int16_t * coeff, |
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; const int16_t const * data, |
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; const uint32_t quant, |
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; const uint32_t dcscalar, |
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; const uint16_t *mpeg_matrices); |
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; |
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;----------------------------------------------------------------------------- |
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|
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ALIGN 16 |
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quant_mpeg_intra_xmm: |
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mov eax, [esp + 8] ; data |
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mov ecx, [esp + 12] ; quant |
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mov edx, [esp + 4] ; coeff |
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push esi |
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push edi |
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push ebx |
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nop |
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mov edi, [esp + 12 + 20] ; mpeg_quant_matrices |
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mov esi, -14 |
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pxor mm0, mm0 |
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pxor mm3, mm3 |
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cmp ecx, byte 1 |
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je near .q1loop |
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cmp ecx, byte 19 |
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jg near .lloop |
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nop6 |
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|
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ALIGN 16 |
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.loop |
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movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
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psubw mm0, mm1 ;-mm1 |
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movq mm4, [eax + 8*esi + 120] ; |
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psubw mm3, mm4 ;-mm4 |
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pmaxsw mm0, mm1 ;|src| |
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pmaxsw mm3,mm4 |
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nop2 |
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psraw mm1, 15 ;sign src |
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psraw mm4, 15 |
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psllw mm0, 4 ;level << 4 ; |
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psllw mm3, 4 |
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paddw mm0, [edi + 128 + 8*esi+112] |
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paddw mm3, [edi + 128 + 8*esi+120] |
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movq mm5, [edi + 384 + 8*esi+112] |
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movq mm7, [edi + 384 + 8*esi+120] |
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pmulhuw mm5, mm0 |
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pmulhuw mm7, mm3 |
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mov esp, esp |
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movq mm2, [edi + 8*esi+112] |
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movq mm6, [edi + 8*esi+120] |
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pmullw mm2, mm5 |
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pmullw mm6, mm7 |
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psubw mm0, mm2 |
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psubw mm3, mm6 |
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nop4 |
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movq mm2, [quantd + ecx * 8 - 8] |
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movq mm6, [mmx_divs + ecx * 8 - 8] |
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paddw mm5, mm2 |
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paddw mm7, mm2 |
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mov esp, esp |
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pmulhuw mm0, [edi + 256 + 8*esi+112] |
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pmulhuw mm3, [edi + 256 + 8*esi+120] |
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paddw mm5, mm0 |
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paddw mm7, mm3 |
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pxor mm0, mm0 |
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pxor mm3, mm3 |
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pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 |
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pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) |
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pxor mm5, mm1 ; mm0 *= sign(mm0) |
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pxor mm7, mm4 ; |
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psubw mm5, mm1 ; undisplace |
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psubw mm7, mm4 ; |
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movq [edx + 8*esi+112], mm5 |
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movq [edx + 8*esi +120], mm7 |
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add esi, byte 2 |
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jng near .loop |
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|
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.done |
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; calculate data[0] // (int32_t)dcscalar) |
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mov esi, [esp + 12 + 16] ; dcscalar |
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movsx ecx, word [eax] |
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mov edi, ecx |
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mov edx, [esp + 12 + 16] |
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shr edx, 1 ; ebx = dcscalar /2 |
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sar edi, 31 ; cdq is vectorpath |
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xor edx, edi ; ebx = eax V -eax -1 |
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sub ecx, edi |
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add ecx, edx |
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mov edx, [dword esp + 12 + 4] |
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mov esi, [int_div+4*esi] |
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imul ecx, esi |
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sar ecx, 17 |
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lea ebx, [byte ecx + 1] |
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cmovs ecx, ebx |
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; idiv cx ; ecx = edi:ecx / dcscalar |
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|
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mov ebx, [esp] |
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mov edi, [esp+4] |
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mov esi, [esp+8] |
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add esp, byte 12 |
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mov [edx], cx ; coeff[0] = ax |
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|
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xor eax, eax |
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ret |
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|
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ALIGN 16 |
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.q1loop |
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movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
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psubw mm0, mm1 ;-mm1 |
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movq mm4, [eax + 8*esi+120] ; |
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psubw mm3, mm4 ;-mm4 |
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pmaxsw mm0, mm1 ;|src| |
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pmaxsw mm3, mm4 |
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nop2 |
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psraw mm1, 15 ;sign src |
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psraw mm4, 15 |
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psllw mm0, 4 ; level << 4 |
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psllw mm3, 4 |
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paddw mm0, [edi + 128 + 8*esi+112] ;mm0 is to be divided |
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paddw mm3, [edi + 128 + 8*esi+120] ;intra1 contains fix for division by 1 |
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movq mm5, [edi + 384 + 8*esi+112] ;with rounding down |
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movq mm7, [edi + 384 + 8*esi+120] |
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pmulhuw mm5, mm0 |
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pmulhuw mm7, mm3 ;mm7: first approx of division |
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mov esp, esp |
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movq mm2, [edi + 8*esi+112] |
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movq mm6, [edi + 8*esi+120] ; divs for q<=16 |
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pmullw mm2, mm5 ;test value <= original |
293 |
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pmullw mm6, mm7 |
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psubw mm0, mm2 ;mismatch |
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psubw mm3, mm6 |
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nop4 |
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movq mm2, [quantd + ecx * 8 - 8] |
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paddw mm5, mm2 ;first approx with quantd |
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paddw mm7, mm2 |
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mov esp, esp |
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pmulhuw mm0, [edi + 256 + 8*esi+112] ;correction |
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pmulhuw mm3, [edi + 256 + 8*esi+120] |
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paddw mm5, mm0 ;final result with quantd |
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paddw mm7, mm3 |
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pxor mm0, mm0 |
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pxor mm3, mm3 |
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mov esp, esp |
308 |
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psrlw mm5, 1 ; (level + quantd) /2 (quant = 1) |
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psrlw mm7, 1 |
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pxor mm5, mm1 ; mm0 *= sign(mm0) |
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pxor mm7, mm4 ; |
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psubw mm5, mm1 ; undisplace |
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psubw mm7, mm4 ; |
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movq [edx + 8*esi+112], mm5 |
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movq [edx + 8*esi +120], mm7 |
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add esi, byte 2 |
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jng near .q1loop |
318 |
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jmp near .done |
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|
320 |
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ALIGN 8 |
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.lloop |
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movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
323 |
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psubw mm0, mm1 ;-mm1 |
324 |
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movq mm4, [eax + 8*esi+120] |
325 |
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psubw mm3, mm4 ;-mm4 |
326 |
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pmaxsw mm0, mm1 ;|src| |
327 |
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pmaxsw mm3, mm4 |
328 |
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nop2 |
329 |
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psraw mm1, 15 ;sign src |
330 |
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psraw mm4, 15 |
331 |
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psllw mm0, 4 ; level << 4 |
332 |
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psllw mm3, 4 ; |
333 |
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paddw mm0, [edi + 128 + 8*esi+112] ;mm0 is to be divided intra1 contains fix for division by 1 |
334 |
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paddw mm3, [edi + 128 + 8*esi+120] |
335 |
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movq mm5, [edi + 384 + 8*esi+112] |
336 |
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movq mm7, [edi + 384 + 8*esi+120] |
337 |
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pmulhuw mm5, mm0 |
338 |
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pmulhuw mm7, mm3 ;mm7: first approx of division |
339 |
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mov esp, esp |
340 |
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movq mm2, [edi + 8*esi+112] |
341 |
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movq mm6, [edi + 8*esi+120] |
342 |
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pmullw mm2, mm5 ;test value <= original |
343 |
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pmullw mm6, mm7 |
344 |
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psubw mm0, mm2 ;mismatch |
345 |
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psubw mm3, mm6 |
346 |
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nop4 |
347 |
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movq mm2, [quantd + ecx * 8 - 8] |
348 |
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movq mm6, [mmx_div + ecx * 8 - 8] ; divs for q<=16 |
349 |
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paddw mm5, mm2 ;first approx with quantd |
350 |
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paddw mm7, mm2 |
351 |
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mov esp, esp |
352 |
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pmulhuw mm0, [edi + 256 + 8*esi+112] ;correction |
353 |
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pmulhuw mm3, [edi + 256 + 8*esi+120] |
354 |
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paddw mm5, mm0 ;final result with quantd |
355 |
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paddw mm7, mm3 |
356 |
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pxor mm0, mm0 |
357 |
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pxor mm3, mm3 |
358 |
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mov esp, esp |
359 |
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pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 |
360 |
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pmulhuw mm7, mm6 ; (level + quantd) / quant (0<quant<32) |
361 |
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psrlw mm5, 1 ; (level + quantd) / (2*quant) |
362 |
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psrlw mm7, 1 |
363 |
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pxor mm5, mm1 ; mm0 *= sign(mm0) |
364 |
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pxor mm7, mm4 ; |
365 |
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psubw mm5, mm1 ; undisplace |
366 |
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psubw mm7, mm4 ; |
367 |
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movq [edx + 8*esi+112], mm5 |
368 |
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movq [edx + 8*esi +120], mm7 |
369 |
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add esi,byte 2 |
370 |
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jng near .lloop |
371 |
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jmp near .done |
372 |
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|
373 |
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;----------------------------------------------------------------------------- |
374 |
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; |
375 |
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; uint32_t quant_mpeg_inter_xmm(int16_t * coeff, |
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; const int16_t const * data, |
377 |
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; const uint32_t quant, |
378 |
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; const uint16_t *mpeg_matrices); |
379 |
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; |
380 |
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;----------------------------------------------------------------------------- |
381 |
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|
382 |
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ALIGN 16 |
383 |
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quant_mpeg_inter_xmm: |
384 |
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mov eax, [esp + 8] ; data |
385 |
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mov ecx, [esp + 12] ; quant |
386 |
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mov edx, [esp + 4] ; coeff |
387 |
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push esi |
388 |
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push edi |
389 |
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push ebx |
390 |
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nop |
391 |
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mov edi, [esp + 12 + 16] |
392 |
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mov esi, -14 |
393 |
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mov ebx, esp |
394 |
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sub esp, byte 24 |
395 |
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lea ebx, [esp+8] |
396 |
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and ebx, byte -8 ;ALIGN 8 |
397 |
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pxor mm0, mm0 |
398 |
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pxor mm3, mm3 |
399 |
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movq [byte ebx],mm0 |
400 |
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db 0Fh, 7Fh, 44h, 23h, 8 ;movq [ebx+8],mm0 |
401 |
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cmp ecx, byte 1 |
402 |
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je near .q1loop |
403 |
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cmp ecx, byte 19 |
404 |
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jg near .lloop |
405 |
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nop |
406 |
|
|
407 |
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ALIGN 16 |
408 |
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.loop |
409 |
|
movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
410 |
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psubw mm0, mm1 ;-mm1 |
411 |
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movq mm4, [eax + 8*esi + 120] ; |
412 |
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psubw mm3, mm4 ;-mm4 |
413 |
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pmaxsw mm0, mm1 ;|src| |
414 |
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pmaxsw mm3, mm4 |
415 |
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nop2 |
416 |
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psraw mm1, 15 ;sign src |
417 |
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psraw mm4, 15 |
418 |
|
psllw mm0, 4 ; level << 4 |
419 |
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psllw mm3, 4 ; |
420 |
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paddw mm0, [edi + 640 + 8*esi+112] |
421 |
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paddw mm3, [edi + 640 + 8*esi+120] |
422 |
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movq mm5, [edi + 896 + 8*esi+112] |
423 |
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movq mm7, [edi + 896 + 8*esi+120] |
424 |
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pmulhuw mm5, mm0 |
425 |
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pmulhuw mm7, mm3 |
426 |
|
mov esp, esp |
427 |
|
movq mm2, [edi + 512 + 8*esi+112] |
428 |
|
movq mm6, [edi + 512 + 8*esi+120] |
429 |
|
pmullw mm2, mm5 |
430 |
|
pmullw mm6, mm7 |
431 |
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psubw mm0, mm2 |
432 |
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psubw mm3, mm6 |
433 |
|
movq mm2, [byte ebx] |
434 |
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movq mm6, [mmx_divs + ecx * 8 - 8] |
435 |
|
pmulhuw mm0, [edi + 768 + 8*esi+112] |
436 |
|
pmulhuw mm3, [edi + 768 + 8*esi+120] |
437 |
|
paddw mm2, [ebx+8] ;sum |
438 |
|
paddw mm5, mm0 |
439 |
|
paddw mm7, mm3 |
440 |
|
pxor mm0, mm0 |
441 |
|
pxor mm3, mm3 |
442 |
|
pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 |
443 |
|
pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) |
444 |
|
add esi, byte 2 |
445 |
|
paddw mm2, mm5 ;sum += x1 |
446 |
|
movq [ebx], mm7 ;store x2 |
447 |
|
pxor mm5, mm1 ; mm0 *= sign(mm0) |
448 |
|
pxor mm7, mm4 ; |
449 |
|
psubw mm5, mm1 ; undisplace |
450 |
|
psubw mm7, mm4 ; |
451 |
|
db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum |
452 |
|
movq [edx + 8*esi+112-16], mm5 |
453 |
|
movq [edx + 8*esi +120-16], mm7 |
454 |
|
jng near .loop |
455 |
|
|
456 |
|
.done |
457 |
|
; calculate data[0] // (int32_t)dcscalar) |
458 |
|
paddw mm2, [ebx] |
459 |
|
mov ebx, [esp+24] |
460 |
|
mov edi, [esp+4+24] |
461 |
|
mov esi, [esp+8+24] |
462 |
|
add esp, byte 12+24 |
463 |
|
pmaddwd mm2, [mmx_one] |
464 |
|
punpckldq mm0, mm2 ;get low dw to mm0:high |
465 |
|
paddd mm0,mm2 |
466 |
|
punpckhdq mm0, mm0 ;get result to low |
467 |
|
movd eax, mm0 |
468 |
|
|
469 |
|
ret |
470 |
|
|
471 |
|
ALIGN 16 |
472 |
|
.q1loop |
473 |
|
movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
474 |
|
psubw mm0, mm1 ;-mm1 |
475 |
|
movq mm4, [eax + 8*esi+120] |
476 |
|
psubw mm3, mm4 ;-mm4 |
477 |
|
pmaxsw mm0, mm1 ;|src| |
478 |
|
pmaxsw mm3, mm4 |
479 |
|
nop2 |
480 |
|
psraw mm1, 15 ; sign src |
481 |
|
psraw mm4, 15 |
482 |
|
psllw mm0, 4 ; level << 4 |
483 |
|
psllw mm3, 4 |
484 |
|
paddw mm0, [edi + 640 + 8*esi+112] ;mm0 is to be divided |
485 |
|
paddw mm3, [edi + 640 + 8*esi+120] ; inter1 contains fix for division by 1 |
486 |
|
movq mm5, [edi + 896 + 8*esi+112] ;with rounding down |
487 |
|
movq mm7, [edi + 896 + 8*esi+120] |
488 |
|
pmulhuw mm5, mm0 |
489 |
|
pmulhuw mm7, mm3 ;mm7: first approx of division |
490 |
|
mov esp, esp |
491 |
|
movq mm2, [edi + 512 + 8*esi+112] |
492 |
|
movq mm6, [edi + 512 + 8*esi+120] ; divs for q<=16 |
493 |
|
pmullw mm2, mm5 ;test value <= original |
494 |
|
pmullw mm6, mm7 |
495 |
|
psubw mm0, mm2 ;mismatch |
496 |
|
psubw mm3, mm6 |
497 |
|
movq mm2, [byte ebx] |
498 |
|
pmulhuw mm0, [edi + 768 + 8*esi+112] ;correction |
499 |
|
pmulhuw mm3, [edi + 768 + 8*esi+120] |
500 |
|
paddw mm2, [ebx+8] ;sum |
501 |
|
paddw mm5, mm0 ;final result |
502 |
|
paddw mm7, mm3 |
503 |
|
pxor mm0, mm0 |
504 |
|
pxor mm3, mm3 |
505 |
|
psrlw mm5, 1 ; (level ) /2 (quant = 1) |
506 |
|
psrlw mm7, 1 |
507 |
|
add esi, byte 2 |
508 |
|
paddw mm2, mm5 ;sum += x1 |
509 |
|
movq [ebx], mm7 ;store x2 |
510 |
|
pxor mm5, mm1 ; mm0 *= sign(mm0) |
511 |
|
pxor mm7, mm4 ; |
512 |
|
psubw mm5, mm1 ; undisplace |
513 |
|
psubw mm7, mm4 ; |
514 |
|
movq [ebx+8], mm2 ;store sum |
515 |
|
movq [edx + 8*esi+112-16], mm5 |
516 |
|
movq [edx + 8*esi +120-16], mm7 |
517 |
|
jng near .q1loop |
518 |
|
jmp near .done |
519 |
|
|
520 |
|
ALIGN 8 |
521 |
|
.lloop |
522 |
|
movq mm1, [eax + 8*esi+112] ; mm0 = [1st] |
523 |
|
psubw mm0,mm1 ;-mm1 |
524 |
|
movq mm4, [eax + 8*esi+120] |
525 |
|
psubw mm3,mm4 ;-mm4 |
526 |
|
pmaxsw mm0,mm1 ;|src| |
527 |
|
pmaxsw mm3,mm4 |
528 |
|
nop2 |
529 |
|
psraw mm1,15 ;sign src |
530 |
|
psraw mm4,15 |
531 |
|
psllw mm0, 4 ; level << 4 |
532 |
|
psllw mm3, 4 ; |
533 |
|
paddw mm0, [edi + 640 + 8*esi+112] ;mm0 is to be divided inter1 contains fix for division by 1 |
534 |
|
paddw mm3, [edi + 640 + 8*esi+120] |
535 |
|
movq mm5,[edi + 896 + 8*esi+112] |
536 |
|
movq mm7,[edi + 896 + 8*esi+120] |
537 |
|
pmulhuw mm5,mm0 |
538 |
|
pmulhuw mm7,mm3 ;mm7: first approx of division |
539 |
|
mov esp,esp |
540 |
|
movq mm2,[edi + 512 + 8*esi+112] |
541 |
|
movq mm6,[edi + 512 + 8*esi+120] |
542 |
|
pmullw mm2,mm5 ;test value <= original |
543 |
|
pmullw mm6,mm7 |
544 |
|
psubw mm0,mm2 ;mismatch |
545 |
|
psubw mm3,mm6 |
546 |
|
movq mm2,[byte ebx] |
547 |
|
movq mm6,[mmx_div + ecx * 8 - 8] ; divs for q<=16 |
548 |
|
pmulhuw mm0,[edi + 768 + 8*esi+112] ;correction |
549 |
|
pmulhuw mm3,[edi + 768 + 8*esi+120] |
550 |
|
paddw mm2,[ebx+8] ;sum |
551 |
|
paddw mm5,mm0 ;final result |
552 |
|
paddw mm7,mm3 |
553 |
|
pxor mm0,mm0 |
554 |
|
pxor mm3,mm3 |
555 |
|
pmulhuw mm5, mm6 ; mm0 = (mm0 / 2Q) >> 16 |
556 |
|
pmulhuw mm7, mm6 ; (level ) / quant (0<quant<32) |
557 |
|
add esi,byte 2 |
558 |
|
psrlw mm5, 1 ; (level ) / (2*quant) |
559 |
|
paddw mm2,mm5 ;sum += x1 |
560 |
|
psrlw mm7, 1 |
561 |
|
movq [ebx],mm7 ;store x2 |
562 |
|
pxor mm5, mm1 ; mm0 *= sign(mm0) |
563 |
|
pxor mm7, mm4 ; |
564 |
|
psubw mm5, mm1 ; undisplace |
565 |
|
psubw mm7, mm4 ; |
566 |
|
db 0Fh, 7Fh, 54h, 23h, 08 ;movq [ebx+8],mm2 ;store sum |
567 |
|
movq [edx + 8*esi+112-16], mm5 |
568 |
|
movq [edx + 8*esi +120-16], mm7 |
569 |
|
jng near .lloop |
570 |
|
jmp near .done |
571 |
|
|
572 |
|
|
573 |
|
;----------------------------------------------------------------------------- |
574 |
|
; |
575 |
|
; uint32_t dequant_mpeg_intra_3dne(int16_t *data, |
576 |
|
; const int16_t const *coeff, |
577 |
|
; const uint32_t quant, |
578 |
|
; const uint32_t dcscalar, |
579 |
|
; const uint16_t *mpeg_matrices); |
580 |
|
; |
581 |
|
;----------------------------------------------------------------------------- |
582 |
|
|
583 |
|
; Note: in order to saturate 'easily', we pre-shift the quantifier |
584 |
|
; by 4. Then, the high-word of (coeff[]*matrix[i]*quant) are used to |
585 |
|
; build a saturating mask. It is non-zero only when an overflow occured. |
586 |
|
; We thus avoid packing/unpacking toward double-word. |
587 |
|
; Moreover, we perform the mult (matrix[i]*quant) first, instead of, e.g., |
588 |
|
; (coeff[i]*matrix[i]). This is less prone to overflow if coeff[] are not |
589 |
|
; checked. Input ranges are: coeff in [-127,127], inter_matrix in [1..255],a |
590 |
|
; and quant in [1..31]. |
591 |
|
; |
592 |
|
|
593 |
|
%macro DEQUANT4INTRAMMX 1 |
594 |
|
movq mm1, [byte ecx+ 16 * %1] ; mm0 = c = coeff[i] |
595 |
|
movq mm4, [ecx+ 16 * %1 +8] ; mm3 = c' = coeff[i+1] |
596 |
|
psubw mm0, mm1 |
597 |
|
psubw mm3, mm4 |
598 |
|
pmaxsw mm0, mm1 |
599 |
|
pmaxsw mm3, mm4 |
600 |
|
psraw mm1, 15 |
601 |
|
psraw mm4, 15 |
602 |
|
%if %1 |
603 |
|
movq mm2, [eax+8] ;preshifted quant |
604 |
|
movq mm7, [eax+8] |
605 |
|
%endif |
606 |
|
pmullw mm2, [edi + 16 * %1 ] ; matrix[i]*quant |
607 |
|
pmullw mm7, [edi + 16 * %1 +8] ; matrix[i+1]*quant |
608 |
|
movq mm5, mm0 |
609 |
|
movq mm6, mm3 |
610 |
|
pmulhw mm0, mm2 ; high of coeff*(matrix*quant) |
611 |
|
pmulhw mm3, mm7 ; high of coeff*(matrix*quant) |
612 |
|
pmullw mm2, mm5 ; low of coeff*(matrix*quant) |
613 |
|
pmullw mm7, mm6 ; low of coeff*(matrix*quant) |
614 |
|
pcmpgtw mm0, [eax] |
615 |
|
pcmpgtw mm3, [eax] |
616 |
|
paddusw mm2, mm0 |
617 |
|
paddusw mm7, mm3 |
618 |
|
psrlw mm2, 5 |
619 |
|
psrlw mm7, 5 |
620 |
|
pxor mm2, mm1 ; start negating back |
621 |
|
pxor mm7, mm4 ; start negating back |
622 |
|
psubusw mm1, mm0 |
623 |
|
psubusw mm4, mm3 |
624 |
|
movq mm0, [eax] ;zero |
625 |
|
movq mm3, [eax] ;zero |
626 |
|
psubw mm2, mm1 ; finish negating back |
627 |
|
psubw mm7, mm4 ; finish negating back |
628 |
|
movq [byte edx + 16 * %1], mm2 ; data[i] |
629 |
|
movq [edx + 16 * %1 +8], mm7 ; data[i+1] |
630 |
|
%endmacro |
631 |
|
|
632 |
|
ALIGN 16 |
633 |
|
dequant_mpeg_intra_3dne: |
634 |
|
mov eax, [esp+12] ; quant |
635 |
|
mov ecx, [esp+8] ; coeff |
636 |
|
movq mm7, [mmx_mul_quant + eax*8 - 8] |
637 |
|
psllw mm7, 2 ; << 2. See comment. |
638 |
|
mov edx, [esp+4] ; data |
639 |
|
push ebx |
640 |
|
movsx ebx, word [ecx] |
641 |
|
pxor mm0, mm0 |
642 |
|
pxor mm3, mm3 |
643 |
|
push esi |
644 |
|
lea eax, [esp-28] |
645 |
|
sub esp, byte 32 |
646 |
|
and eax, byte -8 ;points to qword ALIGNed space on stack |
647 |
|
movq [eax], mm0 |
648 |
|
movq [eax+8], mm7 |
649 |
|
imul ebx, [esp+16+8+32] ; dcscalar |
650 |
|
movq mm2, mm7 |
651 |
|
push edi |
652 |
|
mov edi, [esp + 32 + 12 + 20] ; mpeg_quant_matrices |
653 |
|
ALIGN 4 |
654 |
|
|
655 |
|
DEQUANT4INTRAMMX 0 |
656 |
|
|
657 |
|
mov esi, -2048 |
658 |
|
nop |
659 |
|
cmp ebx, esi |
660 |
|
|
661 |
|
DEQUANT4INTRAMMX 1 |
662 |
|
|
663 |
|
cmovl ebx, esi |
664 |
|
neg esi |
665 |
|
sub esi, byte 1 ;2047 |
666 |
|
|
667 |
|
DEQUANT4INTRAMMX 2 |
668 |
|
|
669 |
|
cmp ebx, esi |
670 |
|
cmovg ebx, esi |
671 |
|
lea ebp, [byte ebp] |
672 |
|
|
673 |
|
DEQUANT4INTRAMMX 3 |
674 |
|
|
675 |
|
mov esi, [esp+36] |
676 |
|
mov [byte edx], bx |
677 |
|
mov ebx, [esp+36+4] |
678 |
|
|
679 |
|
DEQUANT4INTRAMMX 4 |
680 |
|
DEQUANT4INTRAMMX 5 |
681 |
|
DEQUANT4INTRAMMX 6 |
682 |
|
DEQUANT4INTRAMMX 7 |
683 |
|
|
684 |
|
pop edi |
685 |
|
|
686 |
|
add esp, byte 32+8 |
687 |
|
|
688 |
|
xor eax, eax |
689 |
|
ret |
690 |
|
|
691 |
|
;----------------------------------------------------------------------------- |
692 |
|
; |
693 |
|
; uint32_t dequant_mpeg_inter_3dne(int16_t * data, |
694 |
|
; const int16_t * const coeff, |
695 |
|
; const uint32_t quant, |
696 |
|
; const uint16_t *mpeg_matrices); |
697 |
|
; |
698 |
|
;----------------------------------------------------------------------------- |
699 |
|
|
700 |
|
; Note: We use (2*c + sgn(c) - sgn(-c)) as multiplier |
701 |
|
; so we handle the 3 cases: c<0, c==0, and c>0 in one shot. |
702 |
|
; sgn(x) is the result of 'pcmpgtw 0,x': 0 if x>=0, -1 if x<0. |
703 |
|
; It's mixed with the extraction of the absolute value. |
704 |
|
|
705 |
|
ALIGN 16 |
706 |
|
dequant_mpeg_inter_3dne: |
707 |
|
mov edx, [esp+ 4] ; data |
708 |
|
mov ecx, [esp+ 8] ; coeff |
709 |
|
mov eax, [esp+12] ; quant |
710 |
|
movq mm7, [mmx_mul_quant + eax*8 - 8] |
711 |
|
mov eax, -14 |
712 |
|
paddw mm7, mm7 ; << 1 |
713 |
|
pxor mm6, mm6 ; mismatch sum |
714 |
|
push esi |
715 |
|
push edi |
716 |
|
mov esi, mmzero |
717 |
|
pxor mm1, mm1 |
718 |
|
pxor mm3, mm3 |
719 |
|
mov edi, [esp + 8 + 16] ; mpeg_quant_matrices |
720 |
|
nop |
721 |
|
nop4 |
722 |
|
|
723 |
|
ALIGN 16 |
724 |
|
.loop |
725 |
|
movq mm0, [ecx+8*eax + 7*16 ] ; mm0 = coeff[i] |
726 |
|
pcmpgtw mm1, mm0 ; mm1 = sgn(c) (preserved) |
727 |
|
movq mm2, [ecx+8*eax + 7*16 +8] ; mm2 = coeff[i+1] |
728 |
|
pcmpgtw mm3, mm2 ; mm3 = sgn(c') (preserved) |
729 |
|
paddsw mm0, mm1 ; c += sgn(c) |
730 |
|
paddsw mm2, mm3 ; c += sgn(c') |
731 |
|
paddw mm0, mm0 ; c *= 2 |
732 |
|
paddw mm2, mm2 ; c'*= 2 |
733 |
|
|
734 |
|
movq mm4, [esi] |
735 |
|
movq mm5, [esi] |
736 |
|
psubw mm4, mm0 ; -c |
737 |
|
psubw mm5, mm2 ; -c' |
738 |
|
|
739 |
|
psraw mm4, 16 ; mm4 = sgn(-c) |
740 |
|
psraw mm5, 16 ; mm5 = sgn(-c') |
741 |
|
psubsw mm0, mm4 ; c -= sgn(-c) |
742 |
|
psubsw mm2, mm5 ; c' -= sgn(-c') |
743 |
|
pxor mm0, mm1 ; finish changing sign if needed |
744 |
|
pxor mm2, mm3 ; finish changing sign if needed |
745 |
|
|
746 |
|
; we're short on register, here. Poor pairing... |
747 |
|
|
748 |
|
movq mm4, mm7 ; (matrix*quant) |
749 |
|
nop |
750 |
|
pmullw mm4, [edi + 512 + 8*eax + 7*16] |
751 |
|
movq mm5, mm4 |
752 |
|
pmulhw mm5, mm0 ; high of c*(matrix*quant) |
753 |
|
pmullw mm0, mm4 ; low of c*(matrix*quant) |
754 |
|
|
755 |
|
movq mm4, mm7 ; (matrix*quant) |
756 |
|
pmullw mm4, [edi + 512 + 8*eax + 7*16 + 8] |
757 |
|
add eax, byte 2 |
758 |
|
|
759 |
|
pcmpgtw mm5, [esi] |
760 |
|
paddusw mm0, mm5 |
761 |
|
psrlw mm0, 5 |
762 |
|
pxor mm0, mm1 ; start restoring sign |
763 |
|
psubusw mm1, mm5 |
764 |
|
|
765 |
|
movq mm5, mm4 |
766 |
|
pmulhw mm5, mm2 ; high of c*(matrix*quant) |
767 |
|
pmullw mm2, mm4 ; low of c*(matrix*quant) |
768 |
|
psubw mm0, mm1 ; finish restoring sign |
769 |
|
|
770 |
|
pcmpgtw mm5, [esi] |
771 |
|
paddusw mm2, mm5 |
772 |
|
psrlw mm2, 5 |
773 |
|
pxor mm2, mm3 ; start restoring sign |
774 |
|
psubusw mm3, mm5 |
775 |
|
psubw mm2, mm3 ; finish restoring sign |
776 |
|
movq mm1, [esi] |
777 |
|
movq mm3, [byte esi] |
778 |
|
pxor mm6, mm0 ; mismatch control |
779 |
|
movq [edx + 8*eax + 7*16 -2*8 ], mm0 ; data[i] |
780 |
|
pxor mm6, mm2 ; mismatch control |
781 |
|
movq [edx + 8*eax + 7*16 -2*8 +8], mm2 ; data[i+1] |
782 |
|
|
783 |
|
jng .loop |
784 |
|
nop |
785 |
|
|
786 |
|
; mismatch control |
787 |
|
|
788 |
|
pshufw mm0, mm6, 01010101b |
789 |
|
pshufw mm1, mm6, 10101010b |
790 |
|
pshufw mm2, mm6, 11111111b |
791 |
|
pxor mm6, mm0 |
792 |
|
pxor mm1, mm2 |
793 |
|
pxor mm6, mm1 |
794 |
|
movd eax, mm6 |
795 |
|
pop edi |
796 |
|
and eax, byte 1 |
797 |
|
xor eax, byte 1 |
798 |
|
mov esi, [esp] |
799 |
|
add esp, byte 4 |
800 |
|
xor word [edx + 2*63], ax |
801 |
|
|
802 |
|
xor eax, eax |
803 |
|
ret |