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Fix some comment typos

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BUG=None
TEST=try bots

Review URL: https://codereview.chromium.org/2346633002 .
This commit is contained in:
Frank Barchard 2016-09-15 15:38:19 -07:00
parent 742be44654
commit 137aa63afe
4 changed files with 11 additions and 7 deletions
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2
source/scale_common.cc
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@ -421,7 +421,7 @@ void ScaleColsUp2_16_C(uint16* dst_ptr, const uint16* src_ptr,
#define BLENDER(a, b, f) (uint8)((int)(a) + \
((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
#else
// inteluses 7 bit math with rounding.
// Intel uses 7 bit math with rounding.
#define BLENDER(a, b, f) (uint8)((int)(a) + \
(((int)((f) >> 9) * ((int)(b) - (int)(a)) + 0x40) >> 7))
#endif

2
source/scale_gcc.cc
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@ -867,7 +867,7 @@ void ScaleFilterCols_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
"pshufb %%xmm5,%%xmm1 \n"
"punpcklwd %%xmm4,%%xmm0 \n"
"psubb %8,%%xmm0 \n" // make pixels signed.
"pxor %%xmm6,%%xmm1 \n" // 128 -f = (f ^ 127 ) + 1
"pxor %%xmm6,%%xmm1 \n" // 128 - f = (f ^ 127 ) + 1
"paddusb %%xmm7,%%xmm1 \n"
"pmaddubsw %%xmm0,%%xmm1 \n"
"pextrw $0x1,%%xmm2,%k3 \n"

6
source/scale_neon.cc
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@ -572,9 +572,9 @@ void ScaleAddRows_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
MEMACCESS(6) \
"vld2.8 {d6["#n"], d7["#n"]}, [%6] \n"
// The NEON version mimics this formula:
// #define BLENDER(a, b, f) (uint8)((int)(a) +
// ((int)(f) * ((int)(b) - (int)(a)) >> 16))
// The NEON version mimics this formula (from row_common.cc):
// #define BLENDER(a, b, f) (uint8)((int)(a) + \
// ((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {

8
source/scale_neon64.cc
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@ -587,6 +587,10 @@ void ScaleAddRows_NEON(const uint8* src_ptr, ptrdiff_t src_stride,
MEMACCESS(6) \
"ld2 {v4.b, v5.b}["#n"], [%6] \n"
// The NEON version mimics this formula (from row_common.cc):
// #define BLENDER(a, b, f) (uint8)((int)(a) + \
// ((((int)((f)) * ((int)(b) - (int)(a))) + 0x8000) >> 16))
void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
int dx_offset[4] = {0, 1, 2, 3};
@ -626,8 +630,8 @@ void ScaleFilterCols_NEON(uint8* dst_ptr, const uint8* src_ptr,
"ushll2 v6.4s, v6.8h, #0 \n"
"mul v16.4s, v16.4s, v7.4s \n"
"mul v17.4s, v17.4s, v6.4s \n"
"rshrn v6.4h, v16.4s, #16 \n"
"rshrn2 v6.8h, v17.4s, #16 \n"
"rshrn v6.4h, v16.4s, #16 \n"
"rshrn2 v6.8h, v17.4s, #16 \n"
"add v4.8h, v4.8h, v6.8h \n"
"xtn v4.8b, v4.8h \n"