ref: 2ab7b9a6c96ad0891bde3379ebbe607b8978d824
dir: /third_party/libyuv/source/scale_win.cc/
/*
* Copyright 2013 The LibYuv Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "libyuv/row.h"
#include "libyuv/scale_row.h"
#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif
// This module is for Visual C x86.
#if !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86) && \
defined(_MSC_VER) && !defined(__clang__)
// Offsets for source bytes 0 to 9
static uvec8 kShuf0 =
{ 0, 1, 3, 4, 5, 7, 8, 9, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 11 to 20 with 8 subtracted = 3 to 12.
static uvec8 kShuf1 =
{ 3, 4, 5, 7, 8, 9, 11, 12, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31.
static uvec8 kShuf2 =
{ 5, 7, 8, 9, 11, 12, 13, 15, 128, 128, 128, 128, 128, 128, 128, 128 };
// Offsets for source bytes 0 to 10
static uvec8 kShuf01 =
{ 0, 1, 1, 2, 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10 };
// Offsets for source bytes 10 to 21 with 8 subtracted = 3 to 13.
static uvec8 kShuf11 =
{ 2, 3, 4, 5, 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13 };
// Offsets for source bytes 21 to 31 with 16 subtracted = 5 to 31.
static uvec8 kShuf21 =
{ 5, 6, 6, 7, 8, 9, 9, 10, 10, 11, 12, 13, 13, 14, 14, 15 };
// Coefficients for source bytes 0 to 10
static uvec8 kMadd01 =
{ 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2 };
// Coefficients for source bytes 10 to 21
static uvec8 kMadd11 =
{ 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1 };
// Coefficients for source bytes 21 to 31
static uvec8 kMadd21 =
{ 2, 2, 1, 3, 3, 1, 2, 2, 1, 3, 3, 1, 2, 2, 1, 3 };
// Coefficients for source bytes 21 to 31
static vec16 kRound34 =
{ 2, 2, 2, 2, 2, 2, 2, 2 };
static uvec8 kShuf38a =
{ 0, 3, 6, 8, 11, 14, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 };
static uvec8 kShuf38b =
{ 128, 128, 128, 128, 128, 128, 0, 3, 6, 8, 11, 14, 128, 128, 128, 128 };
// Arrange words 0,3,6 into 0,1,2
static uvec8 kShufAc =
{ 0, 1, 6, 7, 12, 13, 128, 128, 128, 128, 128, 128, 128, 128, 128, 128 };
// Arrange words 0,3,6 into 3,4,5
static uvec8 kShufAc3 =
{ 128, 128, 128, 128, 128, 128, 0, 1, 6, 7, 12, 13, 128, 128, 128, 128 };
// Scaling values for boxes of 3x3 and 2x3
static uvec16 kScaleAc33 =
{ 65536 / 9, 65536 / 9, 65536 / 6, 65536 / 9, 65536 / 9, 65536 / 6, 0, 0 };
// Arrange first value for pixels 0,1,2,3,4,5
static uvec8 kShufAb0 =
{ 0, 128, 3, 128, 6, 128, 8, 128, 11, 128, 14, 128, 128, 128, 128, 128 };
// Arrange second value for pixels 0,1,2,3,4,5
static uvec8 kShufAb1 =
{ 1, 128, 4, 128, 7, 128, 9, 128, 12, 128, 15, 128, 128, 128, 128, 128 };
// Arrange third value for pixels 0,1,2,3,4,5
static uvec8 kShufAb2 =
{ 2, 128, 5, 128, 128, 128, 10, 128, 13, 128, 128, 128, 128, 128, 128, 128 };
// Scaling values for boxes of 3x2 and 2x2
static uvec16 kScaleAb2 =
{ 65536 / 3, 65536 / 3, 65536 / 2, 65536 / 3, 65536 / 3, 65536 / 2, 0, 0 };
// Reads 32 pixels, throws half away and writes 16 pixels.
__declspec(naked)
void ScaleRowDown2_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
psrlw xmm0, 8 // isolate odd pixels.
psrlw xmm1, 8
packuswb xmm0, xmm1
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 16
jg wloop
ret
}
}
// Blends 32x1 rectangle to 16x1.
__declspec(naked)
void ScaleRowDown2Linear_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
pcmpeqb xmm5, xmm5 // generate mask 0x00ff00ff
psrlw xmm5, 8
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
movdqa xmm2, xmm0 // average columns (32 to 16 pixels)
psrlw xmm0, 8
movdqa xmm3, xmm1
psrlw xmm1, 8
pand xmm2, xmm5
pand xmm3, xmm5
pavgw xmm0, xmm2
pavgw xmm1, xmm3
packuswb xmm0, xmm1
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 16
jg wloop
ret
}
}
// Blends 32x2 rectangle to 16x1.
__declspec(naked)
void ScaleRowDown2Box_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
pcmpeqb xmm5, xmm5 // generate mask 0x00ff00ff
psrlw xmm5, 8
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
movdqu xmm2, [eax + esi]
movdqu xmm3, [eax + esi + 16]
lea eax, [eax + 32]
pavgb xmm0, xmm2 // average rows
pavgb xmm1, xmm3
movdqa xmm2, xmm0 // average columns (32 to 16 pixels)
psrlw xmm0, 8
movdqa xmm3, xmm1
psrlw xmm1, 8
pand xmm2, xmm5
pand xmm3, xmm5
pavgw xmm0, xmm2
pavgw xmm1, xmm3
packuswb xmm0, xmm1
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 16
jg wloop
pop esi
ret
}
}
#ifdef HAS_SCALEROWDOWN2_AVX2
// Reads 64 pixels, throws half away and writes 32 pixels.
__declspec(naked)
void ScaleRowDown2_AVX2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
wloop:
vmovdqu ymm0, [eax]
vmovdqu ymm1, [eax + 32]
lea eax, [eax + 64]
vpsrlw ymm0, ymm0, 8 // isolate odd pixels.
vpsrlw ymm1, ymm1, 8
vpackuswb ymm0, ymm0, ymm1
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vmovdqu [edx], ymm0
lea edx, [edx + 32]
sub ecx, 32
jg wloop
vzeroupper
ret
}
}
// Blends 64x1 rectangle to 32x1.
__declspec(naked)
void ScaleRowDown2Linear_AVX2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
vpcmpeqb ymm4, ymm4, ymm4 // '1' constant, 8b
vpsrlw ymm4, ymm4, 15
vpackuswb ymm4, ymm4, ymm4
vpxor ymm5, ymm5, ymm5 // constant 0
wloop:
vmovdqu ymm0, [eax]
vmovdqu ymm1, [eax + 32]
lea eax, [eax + 64]
vpmaddubsw ymm0, ymm0, ymm4 // average horizontally
vpmaddubsw ymm1, ymm1, ymm4
vpavgw ymm0, ymm0, ymm5 // (x + 1) / 2
vpavgw ymm1, ymm1, ymm5
vpackuswb ymm0, ymm0, ymm1
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vmovdqu [edx], ymm0
lea edx, [edx + 32]
sub ecx, 32
jg wloop
vzeroupper
ret
}
}
// Blends 64x2 rectangle to 32x1.
__declspec(naked)
void ScaleRowDown2Box_AVX2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
vpcmpeqb ymm4, ymm4, ymm4 // '1' constant, 8b
vpsrlw ymm4, ymm4, 15
vpackuswb ymm4, ymm4, ymm4
vpxor ymm5, ymm5, ymm5 // constant 0
wloop:
vmovdqu ymm0, [eax] // average rows
vmovdqu ymm1, [eax + 32]
vpavgb ymm0, ymm0, [eax + esi]
vpavgb ymm1, ymm1, [eax + esi + 32]
lea eax, [eax + 64]
vpmaddubsw ymm0, ymm0, ymm4 // average horizontally
vpmaddubsw ymm1, ymm1, ymm4
vpavgw ymm0, ymm0, ymm5 // (x + 1) / 2
vpavgw ymm1, ymm1, ymm5
vpackuswb ymm0, ymm0, ymm1
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vmovdqu [edx], ymm0
lea edx, [edx + 32]
sub ecx, 32
jg wloop
pop esi
vzeroupper
ret
}
}
#endif // HAS_SCALEROWDOWN2_AVX2
// Point samples 32 pixels to 8 pixels.
__declspec(naked)
void ScaleRowDown4_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
pcmpeqb xmm5, xmm5 // generate mask 0x00ff0000
psrld xmm5, 24
pslld xmm5, 16
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
pand xmm0, xmm5
pand xmm1, xmm5
packuswb xmm0, xmm1
psrlw xmm0, 8
packuswb xmm0, xmm0
movq qword ptr [edx], xmm0
lea edx, [edx + 8]
sub ecx, 8
jg wloop
ret
}
}
// Blends 32x4 rectangle to 8x1.
__declspec(naked)
void ScaleRowDown4Box_SSE2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
push edi
mov eax, [esp + 8 + 4] // src_ptr
mov esi, [esp + 8 + 8] // src_stride
mov edx, [esp + 8 + 12] // dst_ptr
mov ecx, [esp + 8 + 16] // dst_width
lea edi, [esi + esi * 2] // src_stride * 3
pcmpeqb xmm7, xmm7 // generate mask 0x00ff00ff
psrlw xmm7, 8
wloop:
movdqu xmm0, [eax] // average rows
movdqu xmm1, [eax + 16]
movdqu xmm2, [eax + esi]
movdqu xmm3, [eax + esi + 16]
pavgb xmm0, xmm2
pavgb xmm1, xmm3
movdqu xmm2, [eax + esi * 2]
movdqu xmm3, [eax + esi * 2 + 16]
movdqu xmm4, [eax + edi]
movdqu xmm5, [eax + edi + 16]
lea eax, [eax + 32]
pavgb xmm2, xmm4
pavgb xmm3, xmm5
pavgb xmm0, xmm2
pavgb xmm1, xmm3
movdqa xmm2, xmm0 // average columns (32 to 16 pixels)
psrlw xmm0, 8
movdqa xmm3, xmm1
psrlw xmm1, 8
pand xmm2, xmm7
pand xmm3, xmm7
pavgw xmm0, xmm2
pavgw xmm1, xmm3
packuswb xmm0, xmm1
movdqa xmm2, xmm0 // average columns (16 to 8 pixels)
psrlw xmm0, 8
pand xmm2, xmm7
pavgw xmm0, xmm2
packuswb xmm0, xmm0
movq qword ptr [edx], xmm0
lea edx, [edx + 8]
sub ecx, 8
jg wloop
pop edi
pop esi
ret
}
}
#ifdef HAS_SCALEROWDOWN4_AVX2
// Point samples 64 pixels to 16 pixels.
__declspec(naked)
void ScaleRowDown4_AVX2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
vpcmpeqb ymm5, ymm5, ymm5 // generate mask 0x00ff0000
vpsrld ymm5, ymm5, 24
vpslld ymm5, ymm5, 16
wloop:
vmovdqu ymm0, [eax]
vmovdqu ymm1, [eax + 32]
lea eax, [eax + 64]
vpand ymm0, ymm0, ymm5
vpand ymm1, ymm1, ymm5
vpackuswb ymm0, ymm0, ymm1
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vpsrlw ymm0, ymm0, 8
vpackuswb ymm0, ymm0, ymm0
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vmovdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 16
jg wloop
vzeroupper
ret
}
}
// Blends 64x4 rectangle to 16x1.
__declspec(naked)
void ScaleRowDown4Box_AVX2(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
push edi
mov eax, [esp + 8 + 4] // src_ptr
mov esi, [esp + 8 + 8] // src_stride
mov edx, [esp + 8 + 12] // dst_ptr
mov ecx, [esp + 8 + 16] // dst_width
lea edi, [esi + esi * 2] // src_stride * 3
vpcmpeqb ymm7, ymm7, ymm7 // generate mask 0x00ff00ff
vpsrlw ymm7, ymm7, 8
wloop:
vmovdqu ymm0, [eax] // average rows
vmovdqu ymm1, [eax + 32]
vpavgb ymm0, ymm0, [eax + esi]
vpavgb ymm1, ymm1, [eax + esi + 32]
vmovdqu ymm2, [eax + esi * 2]
vmovdqu ymm3, [eax + esi * 2 + 32]
vpavgb ymm2, ymm2, [eax + edi]
vpavgb ymm3, ymm3, [eax + edi + 32]
lea eax, [eax + 64]
vpavgb ymm0, ymm0, ymm2
vpavgb ymm1, ymm1, ymm3
vpand ymm2, ymm0, ymm7 // average columns (64 to 32 pixels)
vpand ymm3, ymm1, ymm7
vpsrlw ymm0, ymm0, 8
vpsrlw ymm1, ymm1, 8
vpavgw ymm0, ymm0, ymm2
vpavgw ymm1, ymm1, ymm3
vpackuswb ymm0, ymm0, ymm1
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vpand ymm2, ymm0, ymm7 // average columns (32 to 16 pixels)
vpsrlw ymm0, ymm0, 8
vpavgw ymm0, ymm0, ymm2
vpackuswb ymm0, ymm0, ymm0
vpermq ymm0, ymm0, 0xd8 // unmutate vpackuswb
vmovdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 16
jg wloop
pop edi
pop esi
vzeroupper
ret
}
}
#endif // HAS_SCALEROWDOWN4_AVX2
// Point samples 32 pixels to 24 pixels.
// Produces three 8 byte values. For each 8 bytes, 16 bytes are read.
// Then shuffled to do the scaling.
__declspec(naked)
void ScaleRowDown34_SSSE3(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
movdqa xmm3, kShuf0
movdqa xmm4, kShuf1
movdqa xmm5, kShuf2
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
movdqa xmm2, xmm1
palignr xmm1, xmm0, 8
pshufb xmm0, xmm3
pshufb xmm1, xmm4
pshufb xmm2, xmm5
movq qword ptr [edx], xmm0
movq qword ptr [edx + 8], xmm1
movq qword ptr [edx + 16], xmm2
lea edx, [edx + 24]
sub ecx, 24
jg wloop
ret
}
}
// Blends 32x2 rectangle to 24x1
// Produces three 8 byte values. For each 8 bytes, 16 bytes are read.
// Then shuffled to do the scaling.
// Register usage:
// xmm0 src_row 0
// xmm1 src_row 1
// xmm2 shuf 0
// xmm3 shuf 1
// xmm4 shuf 2
// xmm5 madd 0
// xmm6 madd 1
// xmm7 kRound34
// Note that movdqa+palign may be better than movdqu.
__declspec(naked)
void ScaleRowDown34_1_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
movdqa xmm2, kShuf01
movdqa xmm3, kShuf11
movdqa xmm4, kShuf21
movdqa xmm5, kMadd01
movdqa xmm6, kMadd11
movdqa xmm7, kRound34
wloop:
movdqu xmm0, [eax] // pixels 0..7
movdqu xmm1, [eax + esi]
pavgb xmm0, xmm1
pshufb xmm0, xmm2
pmaddubsw xmm0, xmm5
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx], xmm0
movdqu xmm0, [eax + 8] // pixels 8..15
movdqu xmm1, [eax + esi + 8]
pavgb xmm0, xmm1
pshufb xmm0, xmm3
pmaddubsw xmm0, xmm6
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx + 8], xmm0
movdqu xmm0, [eax + 16] // pixels 16..23
movdqu xmm1, [eax + esi + 16]
lea eax, [eax + 32]
pavgb xmm0, xmm1
pshufb xmm0, xmm4
movdqa xmm1, kMadd21
pmaddubsw xmm0, xmm1
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx + 16], xmm0
lea edx, [edx + 24]
sub ecx, 24
jg wloop
pop esi
ret
}
}
// Note that movdqa+palign may be better than movdqu.
__declspec(naked)
void ScaleRowDown34_0_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
movdqa xmm2, kShuf01
movdqa xmm3, kShuf11
movdqa xmm4, kShuf21
movdqa xmm5, kMadd01
movdqa xmm6, kMadd11
movdqa xmm7, kRound34
wloop:
movdqu xmm0, [eax] // pixels 0..7
movdqu xmm1, [eax + esi]
pavgb xmm1, xmm0
pavgb xmm0, xmm1
pshufb xmm0, xmm2
pmaddubsw xmm0, xmm5
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx], xmm0
movdqu xmm0, [eax + 8] // pixels 8..15
movdqu xmm1, [eax + esi + 8]
pavgb xmm1, xmm0
pavgb xmm0, xmm1
pshufb xmm0, xmm3
pmaddubsw xmm0, xmm6
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx + 8], xmm0
movdqu xmm0, [eax + 16] // pixels 16..23
movdqu xmm1, [eax + esi + 16]
lea eax, [eax + 32]
pavgb xmm1, xmm0
pavgb xmm0, xmm1
pshufb xmm0, xmm4
movdqa xmm1, kMadd21
pmaddubsw xmm0, xmm1
paddsw xmm0, xmm7
psrlw xmm0, 2
packuswb xmm0, xmm0
movq qword ptr [edx + 16], xmm0
lea edx, [edx+24]
sub ecx, 24
jg wloop
pop esi
ret
}
}
// 3/8 point sampler
// Scale 32 pixels to 12
__declspec(naked)
void ScaleRowDown38_SSSE3(const uint8* src_ptr, ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
mov eax, [esp + 4] // src_ptr
// src_stride ignored
mov edx, [esp + 12] // dst_ptr
mov ecx, [esp + 16] // dst_width
movdqa xmm4, kShuf38a
movdqa xmm5, kShuf38b
xloop:
movdqu xmm0, [eax] // 16 pixels -> 0,1,2,3,4,5
movdqu xmm1, [eax + 16] // 16 pixels -> 6,7,8,9,10,11
lea eax, [eax + 32]
pshufb xmm0, xmm4
pshufb xmm1, xmm5
paddusb xmm0, xmm1
movq qword ptr [edx], xmm0 // write 12 pixels
movhlps xmm1, xmm0
movd [edx + 8], xmm1
lea edx, [edx + 12]
sub ecx, 12
jg xloop
ret
}
}
// Scale 16x3 pixels to 6x1 with interpolation
__declspec(naked)
void ScaleRowDown38_3_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
movdqa xmm2, kShufAc
movdqa xmm3, kShufAc3
movdqa xmm4, kScaleAc33
pxor xmm5, xmm5
xloop:
movdqu xmm0, [eax] // sum up 3 rows into xmm0/1
movdqu xmm6, [eax + esi]
movhlps xmm1, xmm0
movhlps xmm7, xmm6
punpcklbw xmm0, xmm5
punpcklbw xmm1, xmm5
punpcklbw xmm6, xmm5
punpcklbw xmm7, xmm5
paddusw xmm0, xmm6
paddusw xmm1, xmm7
movdqu xmm6, [eax + esi * 2]
lea eax, [eax + 16]
movhlps xmm7, xmm6
punpcklbw xmm6, xmm5
punpcklbw xmm7, xmm5
paddusw xmm0, xmm6
paddusw xmm1, xmm7
movdqa xmm6, xmm0 // 8 pixels -> 0,1,2 of xmm6
psrldq xmm0, 2
paddusw xmm6, xmm0
psrldq xmm0, 2
paddusw xmm6, xmm0
pshufb xmm6, xmm2
movdqa xmm7, xmm1 // 8 pixels -> 3,4,5 of xmm6
psrldq xmm1, 2
paddusw xmm7, xmm1
psrldq xmm1, 2
paddusw xmm7, xmm1
pshufb xmm7, xmm3
paddusw xmm6, xmm7
pmulhuw xmm6, xmm4 // divide by 9,9,6, 9,9,6
packuswb xmm6, xmm6
movd [edx], xmm6 // write 6 pixels
psrlq xmm6, 16
movd [edx + 2], xmm6
lea edx, [edx + 6]
sub ecx, 6
jg xloop
pop esi
ret
}
}
// Scale 16x2 pixels to 6x1 with interpolation
__declspec(naked)
void ScaleRowDown38_2_Box_SSSE3(const uint8* src_ptr,
ptrdiff_t src_stride,
uint8* dst_ptr, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_ptr
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_ptr
mov ecx, [esp + 4 + 16] // dst_width
movdqa xmm2, kShufAb0
movdqa xmm3, kShufAb1
movdqa xmm4, kShufAb2
movdqa xmm5, kScaleAb2
xloop:
movdqu xmm0, [eax] // average 2 rows into xmm0
movdqu xmm1, [eax + esi]
lea eax, [eax + 16]
pavgb xmm0, xmm1
movdqa xmm1, xmm0 // 16 pixels -> 0,1,2,3,4,5 of xmm1
pshufb xmm1, xmm2
movdqa xmm6, xmm0
pshufb xmm6, xmm3
paddusw xmm1, xmm6
pshufb xmm0, xmm4
paddusw xmm1, xmm0
pmulhuw xmm1, xmm5 // divide by 3,3,2, 3,3,2
packuswb xmm1, xmm1
movd [edx], xmm1 // write 6 pixels
psrlq xmm1, 16
movd [edx + 2], xmm1
lea edx, [edx + 6]
sub ecx, 6
jg xloop
pop esi
ret
}
}
// Reads 16 bytes and accumulates to 16 shorts at a time.
__declspec(naked)
void ScaleAddRow_SSE2(const uint8* src_ptr, uint16* dst_ptr, int src_width) {
__asm {
mov eax, [esp + 4] // src_ptr
mov edx, [esp + 8] // dst_ptr
mov ecx, [esp + 12] // src_width
pxor xmm5, xmm5
// sum rows
xloop:
movdqu xmm3, [eax] // read 16 bytes
lea eax, [eax + 16]
movdqu xmm0, [edx] // read 16 words from destination
movdqu xmm1, [edx + 16]
movdqa xmm2, xmm3
punpcklbw xmm2, xmm5
punpckhbw xmm3, xmm5
paddusw xmm0, xmm2 // sum 16 words
paddusw xmm1, xmm3
movdqu [edx], xmm0 // write 16 words to destination
movdqu [edx + 16], xmm1
lea edx, [edx + 32]
sub ecx, 16
jg xloop
ret
}
}
#ifdef HAS_SCALEADDROW_AVX2
// Reads 32 bytes and accumulates to 32 shorts at a time.
__declspec(naked)
void ScaleAddRow_AVX2(const uint8* src_ptr, uint16* dst_ptr, int src_width) {
__asm {
mov eax, [esp + 4] // src_ptr
mov edx, [esp + 8] // dst_ptr
mov ecx, [esp + 12] // src_width
vpxor ymm5, ymm5, ymm5
// sum rows
xloop:
vmovdqu ymm3, [eax] // read 32 bytes
lea eax, [eax + 32]
vpermq ymm3, ymm3, 0xd8 // unmutate for vpunpck
vpunpcklbw ymm2, ymm3, ymm5
vpunpckhbw ymm3, ymm3, ymm5
vpaddusw ymm0, ymm2, [edx] // sum 16 words
vpaddusw ymm1, ymm3, [edx + 32]
vmovdqu [edx], ymm0 // write 32 words to destination
vmovdqu [edx + 32], ymm1
lea edx, [edx + 64]
sub ecx, 32
jg xloop
vzeroupper
ret
}
}
#endif // HAS_SCALEADDROW_AVX2
// Bilinear column filtering. SSSE3 version.
__declspec(naked)
void ScaleFilterCols_SSSE3(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
__asm {
push ebx
push esi
push edi
mov edi, [esp + 12 + 4] // dst_ptr
mov esi, [esp + 12 + 8] // src_ptr
mov ecx, [esp + 12 + 12] // dst_width
movd xmm2, [esp + 12 + 16] // x
movd xmm3, [esp + 12 + 20] // dx
mov eax, 0x04040000 // shuffle to line up fractions with pixel.
movd xmm5, eax
pcmpeqb xmm6, xmm6 // generate 0x007f for inverting fraction.
psrlw xmm6, 9
pextrw eax, xmm2, 1 // get x0 integer. preroll
sub ecx, 2
jl xloop29
movdqa xmm0, xmm2 // x1 = x0 + dx
paddd xmm0, xmm3
punpckldq xmm2, xmm0 // x0 x1
punpckldq xmm3, xmm3 // dx dx
paddd xmm3, xmm3 // dx * 2, dx * 2
pextrw edx, xmm2, 3 // get x1 integer. preroll
// 2 Pixel loop.
xloop2:
movdqa xmm1, xmm2 // x0, x1 fractions.
paddd xmm2, xmm3 // x += dx
movzx ebx, word ptr [esi + eax] // 2 source x0 pixels
movd xmm0, ebx
psrlw xmm1, 9 // 7 bit fractions.
movzx ebx, word ptr [esi + edx] // 2 source x1 pixels
movd xmm4, ebx
pshufb xmm1, xmm5 // 0011
punpcklwd xmm0, xmm4
pxor xmm1, xmm6 // 0..7f and 7f..0
pmaddubsw xmm0, xmm1 // 16 bit, 2 pixels.
pextrw eax, xmm2, 1 // get x0 integer. next iteration.
pextrw edx, xmm2, 3 // get x1 integer. next iteration.
psrlw xmm0, 7 // 8.7 fixed point to low 8 bits.
packuswb xmm0, xmm0 // 8 bits, 2 pixels.
movd ebx, xmm0
mov [edi], bx
lea edi, [edi + 2]
sub ecx, 2 // 2 pixels
jge xloop2
xloop29:
add ecx, 2 - 1
jl xloop99
// 1 pixel remainder
movzx ebx, word ptr [esi + eax] // 2 source x0 pixels
movd xmm0, ebx
psrlw xmm2, 9 // 7 bit fractions.
pshufb xmm2, xmm5 // 0011
pxor xmm2, xmm6 // 0..7f and 7f..0
pmaddubsw xmm0, xmm2 // 16 bit
psrlw xmm0, 7 // 8.7 fixed point to low 8 bits.
packuswb xmm0, xmm0 // 8 bits
movd ebx, xmm0
mov [edi], bl
xloop99:
pop edi
pop esi
pop ebx
ret
}
}
// Reads 16 pixels, duplicates them and writes 32 pixels.
__declspec(naked)
void ScaleColsUp2_SSE2(uint8* dst_ptr, const uint8* src_ptr,
int dst_width, int x, int dx) {
__asm {
mov edx, [esp + 4] // dst_ptr
mov eax, [esp + 8] // src_ptr
mov ecx, [esp + 12] // dst_width
wloop:
movdqu xmm0, [eax]
lea eax, [eax + 16]
movdqa xmm1, xmm0
punpcklbw xmm0, xmm0
punpckhbw xmm1, xmm1
movdqu [edx], xmm0
movdqu [edx + 16], xmm1
lea edx, [edx + 32]
sub ecx, 32
jg wloop
ret
}
}
// Reads 8 pixels, throws half away and writes 4 even pixels (0, 2, 4, 6)
__declspec(naked)
void ScaleARGBRowDown2_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
__asm {
mov eax, [esp + 4] // src_argb
// src_stride ignored
mov edx, [esp + 12] // dst_argb
mov ecx, [esp + 16] // dst_width
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
shufps xmm0, xmm1, 0xdd
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 4
jg wloop
ret
}
}
// Blends 8x1 rectangle to 4x1.
__declspec(naked)
void ScaleARGBRowDown2Linear_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
__asm {
mov eax, [esp + 4] // src_argb
// src_stride ignored
mov edx, [esp + 12] // dst_argb
mov ecx, [esp + 16] // dst_width
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
lea eax, [eax + 32]
movdqa xmm2, xmm0
shufps xmm0, xmm1, 0x88 // even pixels
shufps xmm2, xmm1, 0xdd // odd pixels
pavgb xmm0, xmm2
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 4
jg wloop
ret
}
}
// Blends 8x2 rectangle to 4x1.
__declspec(naked)
void ScaleARGBRowDown2Box_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
uint8* dst_argb, int dst_width) {
__asm {
push esi
mov eax, [esp + 4 + 4] // src_argb
mov esi, [esp + 4 + 8] // src_stride
mov edx, [esp + 4 + 12] // dst_argb
mov ecx, [esp + 4 + 16] // dst_width
wloop:
movdqu xmm0, [eax]
movdqu xmm1, [eax + 16]
movdqu xmm2, [eax + esi]
movdqu xmm3, [eax + esi + 16]
lea eax, [eax + 32]
pavgb xmm0, xmm2 // average rows
pavgb xmm1, xmm3
movdqa xmm2, xmm0 // average columns (8 to 4 pixels)
shufps xmm0, xmm1, 0x88 // even pixels
shufps xmm2, xmm1, 0xdd // odd pixels
pavgb xmm0, xmm2
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 4
jg wloop
pop esi
ret
}
}
// Reads 4 pixels at a time.
__declspec(naked)
void ScaleARGBRowDownEven_SSE2(const uint8* src_argb, ptrdiff_t src_stride,
int src_stepx,
uint8* dst_argb, int dst_width) {
__asm {
push ebx
push edi
mov eax, [esp + 8 + 4] // src_argb
// src_stride ignored
mov ebx, [esp + 8 + 12] // src_stepx
mov edx, [esp + 8 + 16] // dst_argb
mov ecx, [esp + 8 + 20] // dst_width
lea ebx, [ebx * 4]
lea edi, [ebx + ebx * 2]
wloop:
movd xmm0, [eax]
movd xmm1, [eax + ebx]
punpckldq xmm0, xmm1
movd xmm2, [eax + ebx * 2]
movd xmm3, [eax + edi]
lea eax, [eax + ebx * 4]
punpckldq xmm2, xmm3
punpcklqdq xmm0, xmm2
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 4
jg wloop
pop edi
pop ebx
ret
}
}
// Blends four 2x2 to 4x1.
__declspec(naked)
void ScaleARGBRowDownEvenBox_SSE2(const uint8* src_argb,
ptrdiff_t src_stride,
int src_stepx,
uint8* dst_argb, int dst_width) {
__asm {
push ebx
push esi
push edi
mov eax, [esp + 12 + 4] // src_argb
mov esi, [esp + 12 + 8] // src_stride
mov ebx, [esp + 12 + 12] // src_stepx
mov edx, [esp + 12 + 16] // dst_argb
mov ecx, [esp + 12 + 20] // dst_width
lea esi, [eax + esi] // row1 pointer
lea ebx, [ebx * 4]
lea edi, [ebx + ebx * 2]
wloop:
movq xmm0, qword ptr [eax] // row0 4 pairs
movhps xmm0, qword ptr [eax + ebx]
movq xmm1, qword ptr [eax + ebx * 2]
movhps xmm1, qword ptr [eax + edi]
lea eax, [eax + ebx * 4]
movq xmm2, qword ptr [esi] // row1 4 pairs
movhps xmm2, qword ptr [esi + ebx]
movq xmm3, qword ptr [esi + ebx * 2]
movhps xmm3, qword ptr [esi + edi]
lea esi, [esi + ebx * 4]
pavgb xmm0, xmm2 // average rows
pavgb xmm1, xmm3
movdqa xmm2, xmm0 // average columns (8 to 4 pixels)
shufps xmm0, xmm1, 0x88 // even pixels
shufps xmm2, xmm1, 0xdd // odd pixels
pavgb xmm0, xmm2
movdqu [edx], xmm0
lea edx, [edx + 16]
sub ecx, 4
jg wloop
pop edi
pop esi
pop ebx
ret
}
}
// Column scaling unfiltered. SSE2 version.
__declspec(naked)
void ScaleARGBCols_SSE2(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
__asm {
push edi
push esi
mov edi, [esp + 8 + 4] // dst_argb
mov esi, [esp + 8 + 8] // src_argb
mov ecx, [esp + 8 + 12] // dst_width
movd xmm2, [esp + 8 + 16] // x
movd xmm3, [esp + 8 + 20] // dx
pshufd xmm2, xmm2, 0 // x0 x0 x0 x0
pshufd xmm0, xmm3, 0x11 // dx 0 dx 0
paddd xmm2, xmm0
paddd xmm3, xmm3 // 0, 0, 0, dx * 2
pshufd xmm0, xmm3, 0x05 // dx * 2, dx * 2, 0, 0
paddd xmm2, xmm0 // x3 x2 x1 x0
paddd xmm3, xmm3 // 0, 0, 0, dx * 4
pshufd xmm3, xmm3, 0 // dx * 4, dx * 4, dx * 4, dx * 4
pextrw eax, xmm2, 1 // get x0 integer.
pextrw edx, xmm2, 3 // get x1 integer.
cmp ecx, 0
jle xloop99
sub ecx, 4
jl xloop49
// 4 Pixel loop.
xloop4:
movd xmm0, [esi + eax * 4] // 1 source x0 pixels
movd xmm1, [esi + edx * 4] // 1 source x1 pixels
pextrw eax, xmm2, 5 // get x2 integer.
pextrw edx, xmm2, 7 // get x3 integer.
paddd xmm2, xmm3 // x += dx
punpckldq xmm0, xmm1 // x0 x1
movd xmm1, [esi + eax * 4] // 1 source x2 pixels
movd xmm4, [esi + edx * 4] // 1 source x3 pixels
pextrw eax, xmm2, 1 // get x0 integer. next iteration.
pextrw edx, xmm2, 3 // get x1 integer. next iteration.
punpckldq xmm1, xmm4 // x2 x3
punpcklqdq xmm0, xmm1 // x0 x1 x2 x3
movdqu [edi], xmm0
lea edi, [edi + 16]
sub ecx, 4 // 4 pixels
jge xloop4
xloop49:
test ecx, 2
je xloop29
// 2 Pixels.
movd xmm0, [esi + eax * 4] // 1 source x0 pixels
movd xmm1, [esi + edx * 4] // 1 source x1 pixels
pextrw eax, xmm2, 5 // get x2 integer.
punpckldq xmm0, xmm1 // x0 x1
movq qword ptr [edi], xmm0
lea edi, [edi + 8]
xloop29:
test ecx, 1
je xloop99
// 1 Pixels.
movd xmm0, [esi + eax * 4] // 1 source x2 pixels
movd dword ptr [edi], xmm0
xloop99:
pop esi
pop edi
ret
}
}
// Bilinear row filtering combines 2x1 -> 1x1. SSSE3 version.
// TODO(fbarchard): Port to Neon
// Shuffle table for arranging 2 pixels into pairs for pmaddubsw
static uvec8 kShuffleColARGB = {
0u, 4u, 1u, 5u, 2u, 6u, 3u, 7u, // bbggrraa 1st pixel
8u, 12u, 9u, 13u, 10u, 14u, 11u, 15u // bbggrraa 2nd pixel
};
// Shuffle table for duplicating 2 fractions into 8 bytes each
static uvec8 kShuffleFractions = {
0u, 0u, 0u, 0u, 0u, 0u, 0u, 0u, 4u, 4u, 4u, 4u, 4u, 4u, 4u, 4u,
};
__declspec(naked)
void ScaleARGBFilterCols_SSSE3(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
__asm {
push esi
push edi
mov edi, [esp + 8 + 4] // dst_argb
mov esi, [esp + 8 + 8] // src_argb
mov ecx, [esp + 8 + 12] // dst_width
movd xmm2, [esp + 8 + 16] // x
movd xmm3, [esp + 8 + 20] // dx
movdqa xmm4, kShuffleColARGB
movdqa xmm5, kShuffleFractions
pcmpeqb xmm6, xmm6 // generate 0x007f for inverting fraction.
psrlw xmm6, 9
pextrw eax, xmm2, 1 // get x0 integer. preroll
sub ecx, 2
jl xloop29
movdqa xmm0, xmm2 // x1 = x0 + dx
paddd xmm0, xmm3
punpckldq xmm2, xmm0 // x0 x1
punpckldq xmm3, xmm3 // dx dx
paddd xmm3, xmm3 // dx * 2, dx * 2
pextrw edx, xmm2, 3 // get x1 integer. preroll
// 2 Pixel loop.
xloop2:
movdqa xmm1, xmm2 // x0, x1 fractions.
paddd xmm2, xmm3 // x += dx
movq xmm0, qword ptr [esi + eax * 4] // 2 source x0 pixels
psrlw xmm1, 9 // 7 bit fractions.
movhps xmm0, qword ptr [esi + edx * 4] // 2 source x1 pixels
pshufb xmm1, xmm5 // 0000000011111111
pshufb xmm0, xmm4 // arrange pixels into pairs
pxor xmm1, xmm6 // 0..7f and 7f..0
pmaddubsw xmm0, xmm1 // argb_argb 16 bit, 2 pixels.
pextrw eax, xmm2, 1 // get x0 integer. next iteration.
pextrw edx, xmm2, 3 // get x1 integer. next iteration.
psrlw xmm0, 7 // argb 8.7 fixed point to low 8 bits.
packuswb xmm0, xmm0 // argb_argb 8 bits, 2 pixels.
movq qword ptr [edi], xmm0
lea edi, [edi + 8]
sub ecx, 2 // 2 pixels
jge xloop2
xloop29:
add ecx, 2 - 1
jl xloop99
// 1 pixel remainder
psrlw xmm2, 9 // 7 bit fractions.
movq xmm0, qword ptr [esi + eax * 4] // 2 source x0 pixels
pshufb xmm2, xmm5 // 00000000
pshufb xmm0, xmm4 // arrange pixels into pairs
pxor xmm2, xmm6 // 0..7f and 7f..0
pmaddubsw xmm0, xmm2 // argb 16 bit, 1 pixel.
psrlw xmm0, 7
packuswb xmm0, xmm0 // argb 8 bits, 1 pixel.
movd [edi], xmm0
xloop99:
pop edi
pop esi
ret
}
}
// Reads 4 pixels, duplicates them and writes 8 pixels.
__declspec(naked)
void ScaleARGBColsUp2_SSE2(uint8* dst_argb, const uint8* src_argb,
int dst_width, int x, int dx) {
__asm {
mov edx, [esp + 4] // dst_argb
mov eax, [esp + 8] // src_argb
mov ecx, [esp + 12] // dst_width
wloop:
movdqu xmm0, [eax]
lea eax, [eax + 16]
movdqa xmm1, xmm0
punpckldq xmm0, xmm0
punpckhdq xmm1, xmm1
movdqu [edx], xmm0
movdqu [edx + 16], xmm1
lea edx, [edx + 32]
sub ecx, 8
jg wloop
ret
}
}
// Divide num by div and return as 16.16 fixed point result.
__declspec(naked)
int FixedDiv_X86(int num, int div) {
__asm {
mov eax, [esp + 4] // num
cdq // extend num to 64 bits
shld edx, eax, 16 // 32.16
shl eax, 16
idiv dword ptr [esp + 8]
ret
}
}
// Divide num by div and return as 16.16 fixed point result.
__declspec(naked)
int FixedDiv1_X86(int num, int div) {
__asm {
mov eax, [esp + 4] // num
mov ecx, [esp + 8] // denom
cdq // extend num to 64 bits
shld edx, eax, 16 // 32.16
shl eax, 16
sub eax, 0x00010001
sbb edx, 0
sub ecx, 1
idiv ecx
ret
}
}
#endif // !defined(LIBYUV_DISABLE_X86) && defined(_M_IX86)
#ifdef __cplusplus
} // extern "C"
} // namespace libyuv
#endif