21 |
; * along with this program ; if not, write to the Free Software |
; * along with this program ; if not, write to the Free Software |
22 |
; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
; * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
23 |
; * |
; * |
24 |
; * $Id: quantize_mpeg_mmx.asm,v 1.11 2008-11-26 01:04:34 Isibaar Exp $ |
; * $Id: quantize_mpeg_mmx.asm,v 1.16 2009-09-16 17:07:58 Isibaar Exp $ |
25 |
; * |
; * |
26 |
; *************************************************************************/ |
; *************************************************************************/ |
27 |
|
|
111 |
; Code |
; Code |
112 |
;============================================================================= |
;============================================================================= |
113 |
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114 |
SECTION .rotext align=SECTION_ALIGN |
TEXT |
115 |
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116 |
cglobal quant_mpeg_intra_mmx |
cglobal quant_mpeg_intra_mmx |
117 |
cglobal quant_mpeg_inter_mmx |
cglobal quant_mpeg_inter_mmx |
177 |
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178 |
movq mm7, [mmx_rounding] |
movq mm7, [mmx_rounding] |
179 |
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180 |
; QUANT_MMX(0) |
QUANT_MMX(0) |
181 |
; QUANT_MMX(1) |
QUANT_MMX(1) |
182 |
; QUANT_MMX(2) |
QUANT_MMX(2) |
183 |
; QUANT_MMX(3) |
QUANT_MMX(3) |
184 |
; QUANT_MMX(4) |
QUANT_MMX(4) |
185 |
; QUANT_MMX(5) |
QUANT_MMX(5) |
186 |
; QUANT_MMX(6) |
QUANT_MMX(6) |
187 |
; QUANT_MMX(7) |
QUANT_MMX(7) |
188 |
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189 |
; calculate DC |
; calculate DC |
190 |
; movsx _EAX, word [_EAX] ; data[0] |
movsx _EAX, word [_EAX] ; data[0] |
191 |
; mov TMP0, prm4 ; dcscalar |
mov TMP0, prm4 ; dcscalar |
192 |
; mov _EDX, _EAX |
mov _EDX, _EAX |
193 |
; shr TMP0, 1 ; TMP0 = dcscalar/2 |
shr TMP0, 1 ; TMP0 = dcscalar/2 |
194 |
; sar _EDX, 31 ; TMP1 = sign extend of _EAX (ready for division too) |
sar _EDX, 31 ; TMP1 = sign extend of _EAX (ready for division too) |
195 |
; xor TMP0, _EDX ; adjust TMP0 according to the sign of data[0] |
|
196 |
; sub TMP0, _EDX |
xor TMP0, _EDX ; adjust TMP0 according to the sign of data[0] |
197 |
; add _EAX, TMP0 |
sub TMP0, _EDX |
198 |
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add _EAX, TMP0 |
199 |
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200 |
; mov TMP0, prm4 ; dcscalar |
mov TMP0, prm4 ; dcscalar |
201 |
; idiv TMP0 ; _EAX = _EDX:_EAX / dcscalar |
idiv TMP0 ; _EAX = _EDX:_EAX / dcscalar |
202 |
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203 |
; mov _EDX, prm1 ; coeff again |
mov _EDX, prm1 ; coeff again |
204 |
; mov word [_EDX], ax ; coeff[0] = ax |
mov word [_EDX], ax ; coeff[0] = ax |
205 |
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206 |
xor _EAX, _EAX ; return(0); |
xor _EAX, _EAX ; return(0); |
207 |
ret |
ret |
446 |
mov _EBX, _EAX |
mov _EBX, _EAX |
447 |
%ifdef ARCH_IS_X86_64 |
%ifdef ARCH_IS_X86_64 |
448 |
mov _EAX, prm3 |
mov _EAX, prm3 |
449 |
lea r9, [mmx_mul_quant] |
lea prm1, [mmx_mul_quant] |
450 |
movq mm7, [r9 + _EAX*8 - 8] |
movq mm7, [prm1 + _EAX*8 - 8] |
451 |
%else |
%else |
452 |
mov _EAX, [_ESP + 4 + 12] ; quant |
mov _EAX, [_ESP + 4 + 12] ; quant |
453 |
movq mm7, [mmx_mul_quant + _EAX*8 - 8] |
movq mm7, [mmx_mul_quant + _EAX*8 - 8] |
658 |
ret |
ret |
659 |
ENDFUNC |
ENDFUNC |
660 |
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661 |
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NON_EXEC_STACK |
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%ifidn __OUTPUT_FORMAT__,elf |
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section ".note.GNU-stack" noalloc noexec nowrite progbits |
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%endif |
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