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;/************************************************************************** |
;/**************************************************************************** |
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; * |
; * |
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; * XVID MPEG-4 VIDEO CODEC |
; * XVID MPEG-4 VIDEO CODEC |
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; * mmx cbp calc |
; * - MMX CBP computation - |
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; * |
; * |
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; * This file is part of XviD, a free MPEG-4 video encoder/decoder |
; * Copyright (C) 2005 Carlo Bramini <carlo.bramix@libero.it> |
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; * 2001-2003 Peter Ross <pross@xvid.org> |
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; * 2002-2003 Pascal Massimino <skal@planet-d.net> |
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; * |
; * |
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; * XviD is free software; you can redistribute it and/or modify it |
; * This program is free software ; you can redistribute it and/or modify |
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; * under the terms of the GNU General Public License as published by |
; * 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 |
; * the Free Software Foundation; either version 2 of the License, or |
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; * (at your option) any later version. |
; * (at your option) any later version. |
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; * |
; * |
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; * along with this program; if not, write to the Free Software |
; * 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 |
; * 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 |
; * $Id: cbp_mmx.asm,v 1.18 2008-12-04 14:41:50 Isibaar Exp $ |
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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: cbp_mmx.asm,v 1.7 2002-11-17 00:57:57 edgomez Exp $ |
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; * |
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; *************************************************************************/ |
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bits 32 |
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section .data |
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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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align 16 |
;============================================================================= |
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; Macros |
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;============================================================================= |
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ignore_dc dw 0, -1, -1, -1, -1, -1, -1, -1 |
%include "nasm.inc" |
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section .text |
;============================================================================= |
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; Local data |
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;============================================================================= |
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cglobal calc_cbp_mmx |
DATA |
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;=========================================================================== |
ALIGN SECTION_ALIGN |
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; uint32_t calc_cbp_mmx(const int16_t coeff[6][64]); |
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; |
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;=========================================================================== |
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align 16 |
mult_mask: |
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calc_cbp_mmx: |
db 0x10,0x20,0x04,0x08,0x01,0x02,0x00,0x00 |
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push ebx |
ignore_dc: |
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push esi |
dw 0, -1, -1, -1 |
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mov esi, [esp + 8 + 4] ; coeff |
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xor eax, eax ; cbp = 0 |
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mov edx, (1 << 5) |
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movq mm7, [ignore_dc] |
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.loop |
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movq mm0, [esi] |
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movq mm1, [esi+8] |
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pand mm0, mm7 |
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por mm0, [esi+16] |
;============================================================================= |
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por mm1, [esi+24] |
; Code |
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;============================================================================= |
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por mm0, [esi+32] |
TEXT |
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por mm1, [esi+40] |
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por mm0, [esi+48] |
cglobal calc_cbp_mmx |
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por mm1, [esi+56] |
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por mm0, [esi+64] |
;----------------------------------------------------------------------------- |
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por mm1, [esi+72] |
; uint32_t calc_cbp_mmx(const int16_t coeff[6][64]); |
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;----------------------------------------------------------------------------- |
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por mm0, [esi+80] |
%macro MAKE_LOAD 2 |
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por mm1, [esi+88] |
por mm0, [%2-128*1+%1*8] |
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por mm1, [%2+128*0+%1*8] |
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por mm2, [%2+128*1+%1*8] |
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por mm3, [%2+128*2+%1*8] |
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por mm4, [%2+128*3+%1*8] |
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por mm5, [%2+128*4+%1*8] |
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%endmacro |
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por mm0, [esi+96] |
ALIGN SECTION_ALIGN |
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por mm1, [esi+104] |
calc_cbp_mmx: |
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mov _EAX, prm1 ; coeff |
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por mm0, [esi+112] |
movq mm7, [ignore_dc] |
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por mm1, [esi+120] |
pxor mm6, mm6 ; used only for comparing |
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movq mm0, [_EAX+128*0] |
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movq mm1, [_EAX+128*1] |
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movq mm2, [_EAX+128*2] |
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movq mm3, [_EAX+128*3] |
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movq mm4, [_EAX+128*4] |
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movq mm5, [_EAX+128*5] |
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add _EAX, 8+128 |
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pand mm0, mm7 |
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pand mm1, mm7 |
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pand mm2, mm7 |
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pand mm3, mm7 |
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pand mm4, mm7 |
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pand mm5, mm7 |
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MAKE_LOAD 0, _EAX |
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MAKE_LOAD 1, _EAX |
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MAKE_LOAD 2, _EAX |
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MAKE_LOAD 3, _EAX |
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MAKE_LOAD 4, _EAX |
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MAKE_LOAD 5, _EAX |
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MAKE_LOAD 6, _EAX |
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MAKE_LOAD 7, _EAX |
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MAKE_LOAD 8, _EAX |
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MAKE_LOAD 9, _EAX |
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MAKE_LOAD 10, _EAX |
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MAKE_LOAD 11, _EAX |
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MAKE_LOAD 12, _EAX |
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MAKE_LOAD 13, _EAX |
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MAKE_LOAD 14, _EAX |
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movq mm7, [mult_mask] |
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packssdw mm0, mm1 |
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packssdw mm2, mm3 |
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packssdw mm4, mm5 |
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packssdw mm0, mm2 |
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packssdw mm4, mm6 |
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pcmpeqw mm0, mm6 |
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pcmpeqw mm4, mm6 |
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pcmpeqw mm0, mm6 |
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pcmpeqw mm4, mm6 |
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psrlw mm0, 15 |
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psrlw mm4, 15 |
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packuswb mm0, mm4 |
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pmaddwd mm0, mm7 |
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por mm0, mm1 |
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movq mm1, mm0 |
movq mm1, mm0 |
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psrlq mm1, 32 |
psrlq mm1, 32 |
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lea esi, [esi + 128] |
paddusb mm0, mm1 |
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por mm0, mm1 |
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movd ebx, mm0 |
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test ebx, ebx |
movd eax, mm0 |
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jz .next |
shr _EAX, 8 |
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or eax, edx ; cbp |= 1 << (5-i) |
and _EAX, 0x3F |
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ret |
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ENDFUNC |
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.next |
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shr edx,1 |
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jnc .loop |
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pop esi |
%ifidn __OUTPUT_FORMAT__,elf |
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pop ebx |
section ".note.GNU-stack" noalloc noexec nowrite progbits |
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%endif |
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ret |
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