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libyuv: fix SSSE3 code in scale.c

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This patch was provided by Frank.

Change-Id: Icebcbd96016a51a85dbe5e8a351ab7624ace962b
This commit is contained in:
Yunqing Wang 2013-07-22 15:42:23 -07:00
parent 746154d905
commit f9e8167ba9
1 changed files with 6 additions and 6 deletions
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12
third_party/libyuv/source/scale.c vendored
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@ -1370,12 +1370,12 @@ static void ScaleFilterRows_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
mov edx, [esp + 8 + 12] // src_stride mov edx, [esp + 8 + 12] // src_stride
mov ecx, [esp + 8 + 16] // dst_width mov ecx, [esp + 8 + 16] // dst_width
mov eax, [esp + 8 + 20] // source_y_fraction (0..255) mov eax, [esp + 8 + 20] // source_y_fraction (0..255)
shr eax, 1
cmp eax, 0 cmp eax, 0
je xloop1 je xloop1
cmp eax, 128 cmp eax, 64
je xloop2 je xloop2
shr eax, 1
mov ah,al mov ah,al
neg al neg al
add al, 128 add al, 128
@ -2132,11 +2132,11 @@ void ScaleFilterRows_SSSE3(uint8* dst_ptr,
"mov 0x14(%esp),%edx \n" "mov 0x14(%esp),%edx \n"
"mov 0x18(%esp),%ecx \n" "mov 0x18(%esp),%ecx \n"
"mov 0x1c(%esp),%eax \n" "mov 0x1c(%esp),%eax \n"
"shr %eax \n"
"cmp $0x0,%eax \n" "cmp $0x0,%eax \n"
"je 2f \n" "je 2f \n"
"cmp $0x80,%eax \n" "cmp $0x40,%eax \n"
"je 3f \n" "je 3f \n"
"shr %eax \n"
"mov %al,%ah \n" "mov %al,%ah \n"
"neg %al \n" "neg %al \n"
"add $0x80,%al \n" "add $0x80,%al \n"
@ -2662,6 +2662,7 @@ static void ScaleFilterRows_SSE2(uint8* dst_ptr,
static void ScaleFilterRows_SSSE3(uint8* dst_ptr, static void ScaleFilterRows_SSSE3(uint8* dst_ptr,
const uint8* src_ptr, int src_stride, const uint8* src_ptr, int src_stride,
int dst_width, int source_y_fraction) { int dst_width, int source_y_fraction) {
source_y_fraction >>= 1;
if (source_y_fraction == 0) { if (source_y_fraction == 0) {
asm volatile ( asm volatile (
"1:" "1:"
@ -2680,7 +2681,7 @@ static void ScaleFilterRows_SSSE3(uint8* dst_ptr,
: "memory", "cc", "rax" : "memory", "cc", "rax"
); );
return; return;
} else if (source_y_fraction == 128) { } else if (source_y_fraction == 64) {
asm volatile ( asm volatile (
"1:" "1:"
"movdqa (%1),%%xmm0 \n" "movdqa (%1),%%xmm0 \n"
@ -2703,7 +2704,6 @@ static void ScaleFilterRows_SSSE3(uint8* dst_ptr,
} else { } else {
asm volatile ( asm volatile (
"mov %3,%%eax \n" "mov %3,%%eax \n"
"shr %%eax \n"
"mov %%al,%%ah \n" "mov %%al,%%ah \n"
"neg %%al \n" "neg %%al \n"
"add $0x80,%%al \n" "add $0x80,%%al \n"