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| 1 : | edgomez | 1192 | ;/**************************************************************************** |
| 2 : | Isibaar | 3 | ; * |
| 3 : | edgomez | 1192 | ; * XVID MPEG-4 VIDEO CODEC |
| 4 : | ; * - MMX CBP computation - | ||
| 5 : | Isibaar | 3 | ; * |
| 6 : | edgomez | 1192 | ; * Copyright (C) 2001-2003 Peter Ross <pross@xvid.org> |
| 7 : | ; * 2002-2003 Pascal Massimino <skal@planet-d.net> | ||
| 8 : | Isibaar | 3 | ; * |
| 9 : | edgomez | 1192 | ; * This program is free software ; you can redistribute it and/or modify |
| 10 : | ; * it under the terms of the GNU General Public License as published by | ||
| 11 : | ; * the Free Software Foundation ; either version 2 of the License, or | ||
| 12 : | ; * (at your option) any later version. | ||
| 13 : | Isibaar | 3 | ; * |
| 14 : | edgomez | 1192 | ; * This program is distributed in the hope that it will be useful, |
| 15 : | ; * but WITHOUT ANY WARRANTY ; without even the implied warranty of | ||
| 16 : | ; * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
| 17 : | ; * GNU General Public License for more details. | ||
| 18 : | Isibaar | 3 | ; * |
| 19 : | edgomez | 1192 | ; * You should have received a copy of the GNU General Public License |
| 20 : | ; * along with this program ; if not, write to the Free Software | ||
| 21 : | ; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
| 22 : | Isibaar | 3 | ; * |
| 23 : | edgomez | 1192 | ; * $Id: cbp_mmx.asm,v 1.8.2.1 2003-10-28 22:23:03 edgomez Exp $ |
| 24 : | Isibaar | 3 | ; * |
| 25 : | edgomez | 1192 | ; ***************************************************************************/ |
| 26 : | Isibaar | 3 | |
| 27 : | edgomez | 1192 | BITS 32 |
| 28 : | edgomez | 851 | |
| 29 : | edgomez | 1192 | ;============================================================================= |
| 30 : | ; Macros | ||
| 31 : | ;============================================================================= | ||
| 32 : | Isibaar | 3 | |
| 33 : | %macro cglobal 1 | ||
| 34 : | Isibaar | 262 | %ifdef PREFIX |
| 35 : | global _%1 | ||
| 36 : | %define %1 _%1 | ||
| 37 : | %else | ||
| 38 : | global %1 | ||
| 39 : | %endif | ||
| 40 : | Isibaar | 3 | %endmacro |
| 41 : | |||
| 42 : | edgomez | 1192 | ;============================================================================= |
| 43 : | ; Local data | ||
| 44 : | ;============================================================================= | ||
| 45 : | Isibaar | 3 | |
| 46 : | edgomez | 1192 | SECTION .rodata |
| 47 : | Isibaar | 3 | |
| 48 : | edgomez | 1192 | ALIGN 16 |
| 49 : | Isibaar | 3 | |
| 50 : | edgomez | 1192 | ignore_dc: |
| 51 : | dw 0, -1, -1, -1, -1, -1, -1, -1 | ||
| 52 : | |||
| 53 : | ;============================================================================= | ||
| 54 : | ; Code | ||
| 55 : | ;============================================================================= | ||
| 56 : | |||
| 57 : | SECTION .text | ||
| 58 : | |||
| 59 : | Isibaar | 262 | cglobal calc_cbp_mmx |
| 60 : | Isibaar | 3 | |
| 61 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 62 : | Isibaar | 3 | ; uint32_t calc_cbp_mmx(const int16_t coeff[6][64]); |
| 63 : | edgomez | 1192 | ;----------------------------------------------------------------------------- |
| 64 : | Isibaar | 3 | |
| 65 : | edgomez | 1192 | ALIGN 16 |
| 66 : | Isibaar | 262 | calc_cbp_mmx: |
| 67 : | edgomez | 1192 | push ebx |
| 68 : | push esi | ||
| 69 : | Isibaar | 3 | |
| 70 : | edgomez | 1192 | mov esi, [esp + 8 + 4] ; coeff |
| 71 : | xor eax, eax ; cbp = 0 | ||
| 72 : | mov edx, (1 << 5) | ||
| 73 : | Isibaar | 3 | |
| 74 : | edgomez | 1192 | movq mm7, [ignore_dc] |
| 75 : | Isibaar | 262 | |
| 76 : | Isibaar | 3 | .loop |
| 77 : | edgomez | 1192 | movq mm0, [esi] |
| 78 : | movq mm1, [esi+8] | ||
| 79 : | pand mm0, mm7 | ||
| 80 : | Isibaar | 3 | |
| 81 : | edgomez | 1192 | por mm0, [esi+16] |
| 82 : | por mm1, [esi+24] | ||
| 83 : | Isibaar | 3 | |
| 84 : | edgomez | 1192 | por mm0, [esi+32] |
| 85 : | por mm1, [esi+40] | ||
| 86 : | Isibaar | 3 | |
| 87 : | edgomez | 1192 | por mm0, [esi+48] |
| 88 : | por mm1, [esi+56] | ||
| 89 : | Isibaar | 3 | |
| 90 : | edgomez | 1192 | por mm0, [esi+64] |
| 91 : | por mm1, [esi+72] | ||
| 92 : | Isibaar | 3 | |
| 93 : | edgomez | 1192 | por mm0, [esi+80] |
| 94 : | por mm1, [esi+88] | ||
| 95 : | Isibaar | 3 | |
| 96 : | edgomez | 1192 | por mm0, [esi+96] |
| 97 : | por mm1, [esi+104] | ||
| 98 : | Isibaar | 3 | |
| 99 : | edgomez | 1192 | por mm0, [esi+112] |
| 100 : | por mm1, [esi+120] | ||
| 101 : | Isibaar | 3 | |
| 102 : | edgomez | 1192 | por mm0, mm1 |
| 103 : | movq mm1, mm0 | ||
| 104 : | psrlq mm1, 32 | ||
| 105 : | lea esi, [esi + 128] | ||
| 106 : | Isibaar | 3 | |
| 107 : | edgomez | 1192 | por mm0, mm1 |
| 108 : | movd ebx, mm0 | ||
| 109 : | Isibaar | 3 | |
| 110 : | edgomez | 1192 | test ebx, ebx |
| 111 : | jz .next | ||
| 112 : | or eax, edx ; cbp |= 1 << (5-i) | ||
| 113 : | Isibaar | 3 | |
| 114 : | Isibaar | 262 | .next |
| 115 : | edgomez | 1192 | shr edx,1 |
| 116 : | jnc .loop | ||
| 117 : | Isibaar | 3 | |
| 118 : | edgomez | 1192 | pop esi |
| 119 : | pop ebx | ||
| 120 : | |||
| 121 : | ret |
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