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proresdsp: fix rounding

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2011-10-12 22:18:35 +02:00
parent 67dad8e7b1
commit dc66951bb2
1 changed files with 3 additions and 3 deletions
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6
libavcodec/x86/proresdsp.asm
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@ -49,9 +49,9 @@ w1_plus_w5: times 4 dw W1sh2, +W5sh2
w5_min_w1: times 4 dw W5sh2, -W1sh2
w5_plus_w7: times 4 dw W5sh2, +W7sh2
w7_min_w5: times 4 dw W7sh2, -W5sh2
row_round: times 8 dw (1<<14)
pw_88: times 8 dw 0x2008
cextern pw_1
cextern pw_4
cextern pw_512
cextern pw_1019
@ -96,10 +96,10 @@ section .text align=16
%ifidn %1, col
paddw m10,[pw_88]
%endif
SBUTTERFLY3 wd, 0, 1, 10, 8 ; { row[0], row[2] }[0-3]/[4-7]
%ifidn %1, row
psubw m10,[row_round]
paddw m10,[pw_1]
%endif
SBUTTERFLY3 wd, 0, 1, 10, 8 ; { row[0], row[2] }[0-3]/[4-7]
pmaddwd m2, m0, [w4_plus_w6]
pmaddwd m3, m1, [w4_plus_w6]
pmaddwd m4, m0, [w4_min_w6]