287 lines
4.5 KiB
NASM
Executable File
287 lines
4.5 KiB
NASM
Executable File
;*****************************************************************************
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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: idct_mmx.asm 432 2005-12-28 16:39:13Z picard $
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;*
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;* The Core Pocket Media Player
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;* Copyright (c) 2004-2005 Gabor Kovacs
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;*
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;*****************************************************************************
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;******************
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;* NOT FINISHED *
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;******************
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BITS 32
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ROW_SHIFT equ 11
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COL_SHIFT equ 6
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SECTION .data
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ALIGN 16
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SECTION .text
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%macro cglobal 2
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%define %1 _%1@%2
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global %1
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%endmacro
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cglobal IDCT_Const8x8,16
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cglobal IDCT_Const4x4,16
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;cglobal IDCT_Block8x8,16
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;cglobal IDCT_Block8x4,16
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; ecx:block
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%macro Row 1
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movq mm0,[ecx+%1*16]
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movq mm1,[ecx+%1*16+8]
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; x0 x4 x3 x7 x1 x6 x2 x5
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; x4' = W7 * x5 + W1 * x4;
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; x5' = W7 * x4 - W1 * x5;
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; x6' = W3 * x7 + W5 * x6;
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; x7' = W3 * x6 - W5 * x7;
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; x6' = x4 + x6;
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; x4' = x4 - x6;
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; x7' = x5 + x7;
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; x5' = x5 - x7;
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; x5' = (181 * (x4 + x5) + 128) >> 8;
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; x4' = (181 * (x4 - x5) + 128) >> 8;
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; x3' = W6 * x2 + W2 * x3;
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; x2' = W6 * x3 - W2 * x2;
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; x1 <<= 11;
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; x0 <<= 11;
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; x1' = x0 + x1;
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; x0' = x0 - x1;
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; x3' = x1 + x3;
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; x1' = x1 - x3;
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; x2' = x0 + x2;
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; x0' = x0 - x2;
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movq [ecx+%1*16],mm0
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movq [ecx+%1*16+8],mm1
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%endmacro
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; ecx:block
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; edi:dest edx:dest pitch
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; esi:src eax:src pitch
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%macro Col4x4 2
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%endmacro
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%macro Col4x8 2
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%endmacro
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%if 0
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ALIGN 16
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IDCT_Block8x8:
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push esi
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push edi
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mov ecx,[esp+12] ;block
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mov edi,[esp+12+4] ;dst
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mov edx,[esp+12+8] ;dst pitch
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mov esi,[esp+12+12] ;src
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mov eax,8 ;src pitch
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Row 0
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Row 1
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Row 2
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Row 3
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Row 4
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Row 5
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Row 6
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Row 7
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or esi,esi
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jne .Add
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Col4x8 0,0
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Col4x8 8,0
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pop edi
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pop esi
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ret 16
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.Add:
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Col4x8 0,1
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Col4x8 8,1
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pop edi
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pop esi
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ret 16
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ALIGN 16
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IDCT_Block8x4:
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push esi
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push edi
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mov ecx,[esp+12] ;src
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mov edi,[esp+12+4] ;dst
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mov edx,[esp+12+8] ;dst pitch
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mov esi,[esp+12+12] ;src
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mov eax,8 ;src pitch
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Row 0
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Row 1
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Row 2
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Row 3
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or esi,esi
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jne .Add
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Col4x4 0,0
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Col4x4 8,0
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pop edi
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pop esi
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ret 16
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.Add:
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Col4x4 0,1
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Col4x4 8,1
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pop edi
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pop esi
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ret 16
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%endif
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ALIGN 16
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IDCT_Const8x8:
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push esi
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push edi
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mov ecx,[esp+12] ;v
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mov edi,[esp+12+4] ;dst
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mov edx,[esp+12+8] ;dst pitch
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mov esi,[esp+12+12] ;src
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mov eax,8 ;src pitch
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or ecx,ecx
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js .Sub
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.Add:
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movd mm7,ecx
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punpcklbw mm7,mm7
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punpcklwd mm7,mm7
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punpckldq mm7,mm7
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%rep 4
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movq mm0,[esi]
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movq mm1,[esi+eax]
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paddusb mm0,mm7
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lea esi,[esi+eax*2]
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paddusb mm1,mm7
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movq [edi],mm0
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movq [edi+edx],mm1
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lea edi,[edi+edx*2]
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%endrep
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pop edi
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pop esi
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ret 16
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.Sub:
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neg ecx
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movd mm7,ecx
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punpcklbw mm7,mm7
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punpcklwd mm7,mm7
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punpckldq mm7,mm7
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%rep 4
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movq mm0,[esi]
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movq mm1,[esi+eax]
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psubusb mm0,mm7
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lea esi,[esi+eax*2]
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psubusb mm1,mm7
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movq [edi],mm0
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movq [edi+edx],mm1
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lea edi,[edi+edx*2]
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%endrep
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pop edi
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pop esi
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ret 16
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ALIGN 16
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IDCT_Const4x4:
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push esi
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push edi
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mov ecx,[esp+12] ;v
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mov edi,[esp+12+4] ;dst
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mov edx,[esp+12+8] ;dst pitch
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mov esi,[esp+12+12] ;src
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mov eax,8 ;src pitch
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or ecx,ecx
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js .Sub
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.Add:
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movd mm7,ecx
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punpcklbw mm7,mm7
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punpcklwd mm7,mm7
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punpckldq mm7,mm7
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%rep 2
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movd mm0,[esi]
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movd mm1,[esi+eax]
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paddusb mm0,mm7
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lea esi,[esi+eax*2]
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paddusb mm1,mm7
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movd [edi],mm0
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movd [edi+edx],mm1
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lea edi,[edi+edx*2]
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%endrep
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pop edi
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pop esi
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ret 16
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.Sub:
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neg ecx
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movd mm7,ecx
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punpcklbw mm7,mm7
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punpcklwd mm7,mm7
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punpckldq mm7,mm7
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%rep 2
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movd mm0,[esi]
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movd mm1,[esi+eax]
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psubusb mm0,mm7
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lea esi,[esi+eax*2]
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psubusb mm1,mm7
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movd [edi],mm0
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movd [edi+edx],mm1
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lea edi,[edi+edx*2]
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%endrep
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pop edi
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pop esi
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ret 16
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