diff options
| author | James Darnley <jdarnley@obe.tv> | 2017-06-12 12:32:57 +0100 |
|---|---|---|
| committer | James Darnley <jdarnley@obe.tv> | 2017-06-20 16:12:25 +0200 |
| commit | 8221c7170317b40d9ab8ca2810cd8f5afbd77e02 (patch) | |
| tree | 6141bdcba09ebd9312baec5707eaa26e2b6a32c2 /libavcodec/x86/simple_idct10.asm | |
| parent | 9d11fedd1129565c8ba9e90b08b43e06f441b4fb (diff) | |
avcodec/x86: allow future 8-bit simple idct to use slightly different coefficients
Diffstat (limited to 'libavcodec/x86/simple_idct10.asm')
| -rw-r--r-- | libavcodec/x86/simple_idct10.asm | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/libavcodec/x86/simple_idct10.asm b/libavcodec/x86/simple_idct10.asm index 1a5a2eae9b..b492303a57 100644 --- a/libavcodec/x86/simple_idct10.asm +++ b/libavcodec/x86/simple_idct10.asm @@ -46,28 +46,41 @@ times 4 dw %2, %3 %define W2sh2 21407 ; W2 = 85627 = 21407<<2 - 1 %define W3sh2 19265 ; W3 = 77062 = 19265<<2 + 2 %define W4sh2 16384 ; W4 = 65535 = 16384<<2 - 1 +%define W3sh2_lo 19266 +%define W4sh2_lo 16383 %define W5sh2 12873 ; W5 = 51491 = 12873<<2 - 1 %define W6sh2 8867 ; W6 = 35468 = 8867<<2 %define W7sh2 4520 ; W7 = 18081 = 4520<<2 + 1 -CONST_DEC w4_plus_w2, W4sh2, +W2sh2 -CONST_DEC w4_min_w2, W4sh2, -W2sh2 -CONST_DEC w4_plus_w6, W4sh2, +W6sh2 -CONST_DEC w4_min_w6, W4sh2, -W6sh2 -CONST_DEC w1_plus_w3, W1sh2, +W3sh2 -CONST_DEC w3_min_w1, W3sh2, -W1sh2 -CONST_DEC w7_plus_w3, W7sh2, +W3sh2 -CONST_DEC w3_min_w7, W3sh2, -W7sh2 +CONST_DEC w4_plus_w2_hi, W4sh2, +W2sh2 +CONST_DEC w4_min_w2_hi, W4sh2, -W2sh2 +CONST_DEC w4_plus_w6_hi, W4sh2, +W6sh2 +CONST_DEC w4_min_w6_hi, W4sh2, -W6sh2 +CONST_DEC w1_plus_w3_hi, W1sh2, +W3sh2 +CONST_DEC w3_min_w1_hi, W3sh2, -W1sh2 +CONST_DEC w7_plus_w3_hi, W7sh2, +W3sh2 +CONST_DEC w3_min_w7_hi, W3sh2, -W7sh2 CONST_DEC w1_plus_w5, W1sh2, +W5sh2 CONST_DEC w5_min_w1, W5sh2, -W1sh2 CONST_DEC w5_plus_w7, W5sh2, +W7sh2 CONST_DEC w7_min_w5, W7sh2, -W5sh2 +CONST_DEC w4_plus_w2_lo, W4sh2_lo, +W2sh2 +CONST_DEC w4_min_w2_lo, W4sh2_lo, -W2sh2 +CONST_DEC w4_plus_w6_lo, W4sh2_lo, +W6sh2 +CONST_DEC w4_min_w6_lo, W4sh2_lo, -W6sh2 +CONST_DEC w1_plus_w3_lo, W1sh2, +W3sh2_lo +CONST_DEC w3_min_w1_lo, W3sh2_lo, -W1sh2 +CONST_DEC w7_plus_w3_lo, W7sh2, +W3sh2_lo +CONST_DEC w3_min_w7_lo, W3sh2_lo, -W7sh2 %include "libavcodec/x86/simple_idct10_template.asm" SECTION .text %macro idct_fn 0 + +define_constants _hi + cglobal simple_idct10, 1, 1, 16, block IDCT_FN "", 12, "", 19, "store" RET |