[x265] [PATCH] idst4_c: optimization
praveen at multicorewareinc.com
praveen at multicorewareinc.com
Fri Nov 21 04:57:08 CET 2014
# HG changeset patch
# User Praveen Tiwari
# Date 1416542220 -19800
# Node ID 18daa2f9961b863c5343a0791dd941d8537f4653
# Parent 8a510f40c40733394aae0b9413bf8a279ee248e6
idst4_c: optimization
diff -r 8a510f40c407 -r 18daa2f9961b source/common/dct.cpp
--- a/source/common/dct.cpp Fri Nov 21 09:12:33 2014 +0530
+++ b/source/common/dct.cpp Fri Nov 21 09:27:00 2014 +0530
@@ -576,18 +576,7 @@
ALIGN_VAR_32(int16_t, coef[4 * 4]);
ALIGN_VAR_32(int16_t, block[4 * 4]);
-#define N (4)
- for (int i = 0; i < N; i++)
- {
- for (int j = 0; j < N; j++)
- {
- block[i * N + j] = (int16_t)src[i * N + j];
- }
- }
-
-#undef N
-
- inversedst(block, coef, shift_1st); // Forward DST BY FAST ALGORITHM, block input, coef output
+ inversedst(src, coef, shift_1st); // Forward DST BY FAST ALGORITHM, block input, coef output
inversedst(coef, block, shift_2nd); // Forward DST BY FAST ALGORITHM, coef input, coeff output
for (int i = 0; i < 4; i++)
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