[svn] / trunk / xvidcore / src / quant / x86_asm / quantize_mpeg_mmx.asm Repository:
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revision 1803, Wed Nov 26 23:35:50 2008 UTC revision 1845, Thu Dec 4 18:30:36 2008 UTC
# Line 21  Line 21 
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 1.13 2008-11-26 23:35:50 Isibaar Exp $  ; * $Id: quantize_mpeg_mmx.asm,v 1.15 2008-12-04 18:30:36 Isibaar Exp $
25  ; *  ; *
26  ; *************************************************************************/  ; *************************************************************************/
27    
# Line 111  Line 111 
111  ; Code  ; Code
112  ;=============================================================================  ;=============================================================================
113    
114  SECTION .rotext align=SECTION_ALIGN  TEXT
115    
116  cglobal quant_mpeg_intra_mmx  cglobal quant_mpeg_intra_mmx
117  cglobal quant_mpeg_inter_mmx  cglobal quant_mpeg_inter_mmx
# Line 192  Line 192 
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    
196    xor TMP0, _EDX            ; adjust TMP0 according to the sign of data[0]    xor TMP0, _EDX            ; adjust TMP0 according to the sign of data[0]
197    sub TMP0, _EDX    sub TMP0, _EDX
198    add _EAX, TMP0    add _EAX, TMP0
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