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mozjpeg/simd/i386/jdsample-avx2.asm
DRC 19c791cdac Improve code formatting consistency 
With rare exceptions ...
- Always separate line continuation characters by one space from
  preceding code.
- Always use two-space indentation.  Never use tabs.
- Always use K&R-style conditional blocks.
- Always surround operators with spaces, except in raw assembly code.
- Always put a space after, but not before, a comma.
- Never put a space between type casts and variables/function calls.
- Never put a space between the function name and the argument list in
  function declarations and prototypes.
- Always surround braces ('{' and '}') with spaces.
- Always surround statements (if, for, else, catch, while, do, switch)
  with spaces.
- Always attach pointer symbols ('*' and '**') to the variable or
  function name.
- Always precede pointer symbols ('*' and '**') by a space in type
  casts.
- Use the MIN() macro from jpegint.h within the libjpeg and TurboJPEG
  API libraries (using min() from tjutil.h is still necessary for
  TJBench.)
- Where it makes sense (particularly in the TurboJPEG code), put a blank
  line after variable declaration blocks.
- Always separate statements in one-liners by two spaces.

The purpose of this was to ease maintenance on my part and also to make
it easier for contributors to figure out how to format patch
submissions.  This was admittedly confusing (even to me sometimes) when
we had 3 or 4 different style conventions in the same source tree.  The
new convention is more consistent with the formatting of other OSS code
bases.

This commit corrects deviations from the chosen formatting style in the
libjpeg API code and reformats the TurboJPEG API code such that it
conforms to the same standard.

NOTES:
- Although it is no longer necessary for the function name in function
  declarations to begin in Column 1 (this was historically necessary
  because of the ansi2knr utility, which allowed libjpeg to be built
  with non-ANSI compilers), we retain that formatting for the libjpeg
  code because it improves readability when using libjpeg's function
  attribute macros (GLOBAL(), etc.)
- This reformatting project was accomplished with the help of AStyle and
  Uncrustify, although neither was completely up to the task, and thus
  a great deal of manual tweaking was required.  Note to developers of
  code formatting utilities:  the libjpeg-turbo code base is an
  excellent test bed, because AFAICT, it breaks every single one of the
  utilities that are currently available.
- The legacy (MMX, SSE, 3DNow!) assembly code for i386 has been
  formatted to match the SSE2 code (refer to
  ff5685d5344273df321eb63a005eaae19d2496e3.)  I hadn't intended to
  bother with this, but the Loongson MMI implementation demonstrated
  that there is still academic value to the MMX implementation, as an
  algorithmic model for other 64-bit vector implementations.  Thus, it
  is desirable to improve its readability in the same manner as that of
  the SSE2 implementation.
2018-03-16 02:14:34 -05:00

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;
; jdsample.asm - upsampling (AVX2)
;
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
; Copyright (C) 2015, Intel Corporation.
; Copyright (C) 2016, D. R. Commander.
;
; Based on the x86 SIMD extension for IJG JPEG library
; Copyright (C) 1999-2006, MIYASAKA Masaru.
; For conditions of distribution and use, see copyright notice in jsimdext.inc
;
; This file should be assembled with NASM (Netwide Assembler),
; can *not* be assembled with Microsoft's MASM or any compatible
; assembler (including Borland's Turbo Assembler).
; NASM is available from http://nasm.sourceforge.net/ or
; http://sourceforge.net/project/showfiles.php?group_id=6208
;
; [TAB8]
%include "jsimdext.inc"
; --------------------------------------------------------------------------
SECTION SEG_CONST
alignz 32
GLOBAL_DATA(jconst_fancy_upsample_avx2)
EXTN(jconst_fancy_upsample_avx2):
PW_ONE times 16 dw 1
PW_TWO times 16 dw 2
PW_THREE times 16 dw 3
PW_SEVEN times 16 dw 7
PW_EIGHT times 16 dw 8
alignz 32
; --------------------------------------------------------------------------
SECTION SEG_TEXT
BITS 32
;
; Fancy processing for the common case of 2:1 horizontal and 1:1 vertical.
;
; The upsampling algorithm is linear interpolation between pixel centers,
; also known as a "triangle filter". This is a good compromise between
; speed and visual quality. The centers of the output pixels are 1/4 and 3/4
; of the way between input pixel centers.
;
; GLOBAL(void)
; jsimd_h2v1_fancy_upsample_avx2(int max_v_samp_factor,
; JDIMENSION downsampled_width,
; JSAMPARRAY input_data,
; JSAMPARRAY *output_data_ptr);
;
%define max_v_samp(b) (b) + 8 ; int max_v_samp_factor
%define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width
%define input_data(b) (b) + 16 ; JSAMPARRAY input_data
%define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr
align 32
GLOBAL_FUNCTION(jsimd_h2v1_fancy_upsample_avx2)
EXTN(jsimd_h2v1_fancy_upsample_avx2):
push ebp
mov ebp, esp
pushpic ebx
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
get_GOT ebx ; get GOT address
mov eax, JDIMENSION [downsamp_width(ebp)] ; colctr
test eax, eax
jz near .return
mov ecx, INT [max_v_samp(ebp)] ; rowctr
test ecx, ecx
jz near .return
mov esi, JSAMPARRAY [input_data(ebp)] ; input_data
mov edi, POINTER [output_data_ptr(ebp)]
mov edi, JSAMPARRAY [edi] ; output_data
alignx 16, 7
.rowloop:
push eax ; colctr
push edi
push esi
mov esi, JSAMPROW [esi] ; inptr
mov edi, JSAMPROW [edi] ; outptr
test eax, SIZEOF_YMMWORD-1
jz short .skip
mov dl, JSAMPLE [esi+(eax-1)*SIZEOF_JSAMPLE]
mov JSAMPLE [esi+eax*SIZEOF_JSAMPLE], dl ; insert a dummy sample
.skip:
vpxor ymm0, ymm0, ymm0 ; ymm0=(all 0's)
vpcmpeqb xmm7, xmm7, xmm7
vpsrldq xmm7, xmm7, (SIZEOF_XMMWORD-1) ; (ff -- -- -- ... -- --) LSB is ff
vpand ymm7, ymm7, YMMWORD [esi+0*SIZEOF_YMMWORD]
add eax, byte SIZEOF_YMMWORD-1
and eax, byte -SIZEOF_YMMWORD
cmp eax, byte SIZEOF_YMMWORD
ja short .columnloop
alignx 16, 7
.columnloop_last:
vpcmpeqb xmm6, xmm6, xmm6
vpslldq xmm6, xmm6, (SIZEOF_XMMWORD-1)
vperm2i128 ymm6, ymm6, ymm6, 1 ; (---- ---- ... ---- ---- ff) MSB is ff
vpand ymm6, ymm6, YMMWORD [esi+0*SIZEOF_YMMWORD]
jmp short .upsample
alignx 16, 7
.columnloop:
vmovdqu ymm6, YMMWORD [esi+1*SIZEOF_YMMWORD]
vperm2i128 ymm6, ymm0, ymm6, 0x20
vpslldq ymm6, ymm6, 15
.upsample:
vmovdqu ymm1, YMMWORD [esi+0*SIZEOF_YMMWORD] ; ymm1=( 0 1 2 ... 29 30 31)
vperm2i128 ymm2, ymm0, ymm1, 0x20
vpalignr ymm2, ymm1, ymm2, 15 ; ymm2=(-- 0 1 ... 28 29 30)
vperm2i128 ymm4, ymm0, ymm1, 0x03
vpalignr ymm3, ymm4, ymm1, 1 ; ymm3=( 1 2 3 ... 30 31 --)
vpor ymm2, ymm2, ymm7 ; ymm2=(-1 0 1 ... 28 29 30)
vpor ymm3, ymm3, ymm6 ; ymm3=( 1 2 3 ... 30 31 32)
vpsrldq ymm7, ymm4, (SIZEOF_XMMWORD-1) ; ymm7=(31 -- -- ... -- -- --)
vpunpckhbw ymm4, ymm1, ymm0 ; ymm4=( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm5, ymm1, ymm0 ; ymm5=( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm1, ymm5, ymm4, 0x20 ; ymm1=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpunpckhbw ymm5, ymm2, ymm0 ; ymm5=( 7 8 9 10 11 12 13 14 23 24 25 26 27 28 29 30)
vpunpcklbw ymm6, ymm2, ymm0 ; ymm6=(-1 0 1 2 3 4 5 6 15 16 17 18 19 20 21 22)
vperm2i128 ymm2, ymm6, ymm5, 0x20 ; ymm2=(-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5=(15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
vpunpckhbw ymm6, ymm3, ymm0 ; ymm6=( 1 2 3 4 5 6 7 8 17 18 19 20 21 22 23 24)
vpunpcklbw ymm0, ymm3, ymm0 ; ymm0=( 9 10 11 12 13 14 15 16 25 26 27 28 29 30 31 32)
vperm2i128 ymm3, ymm0, ymm6, 0x20 ; ymm3=( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16)
vperm2i128 ymm6, ymm0, ymm6, 0x31 ; ymm6=(17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32)
vpxor ymm0, ymm0, ymm0 ; ymm0=(all 0's)
vpmullw ymm1, ymm1, [GOTOFF(ebx,PW_THREE)]
vpmullw ymm4, ymm4, [GOTOFF(ebx,PW_THREE)]
vpaddw ymm2, ymm2, [GOTOFF(ebx,PW_ONE)]
vpaddw ymm5, ymm5, [GOTOFF(ebx,PW_ONE)]
vpaddw ymm3, ymm3, [GOTOFF(ebx,PW_TWO)]
vpaddw ymm6, ymm6, [GOTOFF(ebx,PW_TWO)]
vpaddw ymm2, ymm2, ymm1
vpaddw ymm5, ymm5, ymm4
vpsrlw ymm2, ymm2, 2 ; ymm2=OutLE=( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30)
vpsrlw ymm5, ymm5, 2 ; ymm5=OutHE=(32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62)
vpaddw ymm3, ymm3, ymm1
vpaddw ymm6, ymm6, ymm4
vpsrlw ymm3, ymm3, 2 ; ymm3=OutLO=( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31)
vpsrlw ymm6, ymm6, 2 ; ymm6=OutHO=(33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63)
vpsllw ymm3, ymm3, BYTE_BIT
vpsllw ymm6, ymm6, BYTE_BIT
vpor ymm2, ymm2, ymm3 ; ymm2=OutL=( 0 1 2 ... 29 30 31)
vpor ymm5, ymm5, ymm6 ; ymm5=OutH=(32 33 34 ... 61 62 63)
vmovdqu YMMWORD [edi+0*SIZEOF_YMMWORD], ymm2
vmovdqu YMMWORD [edi+1*SIZEOF_YMMWORD], ymm5
sub eax, byte SIZEOF_YMMWORD
add esi, byte 1*SIZEOF_YMMWORD ; inptr
add edi, byte 2*SIZEOF_YMMWORD ; outptr
cmp eax, byte SIZEOF_YMMWORD
ja near .columnloop
test eax, eax
jnz near .columnloop_last
pop esi
pop edi
pop eax
add esi, byte SIZEOF_JSAMPROW ; input_data
add edi, byte SIZEOF_JSAMPROW ; output_data
dec ecx ; rowctr
jg near .rowloop
.return:
vzeroupper
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
poppic ebx
pop ebp
ret
; --------------------------------------------------------------------------
;
; Fancy processing for the common case of 2:1 horizontal and 2:1 vertical.
; Again a triangle filter; see comments for h2v1 case, above.
;
; GLOBAL(void)
; jsimd_h2v2_fancy_upsample_avx2(int max_v_samp_factor,
; JDIMENSION downsampled_width,
; JSAMPARRAY input_data,
; JSAMPARRAY *output_data_ptr);
;
%define max_v_samp(b) (b) + 8 ; int max_v_samp_factor
%define downsamp_width(b) (b) + 12 ; JDIMENSION downsampled_width
%define input_data(b) (b) + 16 ; JSAMPARRAY input_data
%define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr
%define original_ebp ebp + 0
%define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_YMMWORD
; ymmword wk[WK_NUM]
%define WK_NUM 4
%define gotptr wk(0) - SIZEOF_POINTER ; void *gotptr
align 32
GLOBAL_FUNCTION(jsimd_h2v2_fancy_upsample_avx2)
EXTN(jsimd_h2v2_fancy_upsample_avx2):
push ebp
mov eax, esp ; eax = original ebp
sub esp, byte 4
and esp, byte (-SIZEOF_YMMWORD) ; align to 256 bits
mov [esp], eax
mov ebp, esp ; ebp = aligned ebp
lea esp, [wk(0)]
pushpic eax ; make a room for GOT address
push ebx
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
get_GOT ebx ; get GOT address
movpic POINTER [gotptr], ebx ; save GOT address
mov edx, eax ; edx = original ebp
mov eax, JDIMENSION [downsamp_width(edx)] ; colctr
test eax, eax
jz near .return
mov ecx, INT [max_v_samp(edx)] ; rowctr
test ecx, ecx
jz near .return
mov esi, JSAMPARRAY [input_data(edx)] ; input_data
mov edi, POINTER [output_data_ptr(edx)]
mov edi, JSAMPARRAY [edi] ; output_data
alignx 16, 7
.rowloop:
push eax ; colctr
push ecx
push edi
push esi
mov ecx, JSAMPROW [esi-1*SIZEOF_JSAMPROW] ; inptr1(above)
mov ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW] ; inptr0
mov esi, JSAMPROW [esi+1*SIZEOF_JSAMPROW] ; inptr1(below)
mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] ; outptr0
mov edi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] ; outptr1
test eax, SIZEOF_YMMWORD-1
jz short .skip
push edx
mov dl, JSAMPLE [ecx+(eax-1)*SIZEOF_JSAMPLE]
mov JSAMPLE [ecx+eax*SIZEOF_JSAMPLE], dl
mov dl, JSAMPLE [ebx+(eax-1)*SIZEOF_JSAMPLE]
mov JSAMPLE [ebx+eax*SIZEOF_JSAMPLE], dl
mov dl, JSAMPLE [esi+(eax-1)*SIZEOF_JSAMPLE]
mov JSAMPLE [esi+eax*SIZEOF_JSAMPLE], dl ; insert a dummy sample
pop edx
.skip:
; -- process the first column block
vmovdqu ymm0, YMMWORD [ebx+0*SIZEOF_YMMWORD] ; ymm0=row[ 0][0]
vmovdqu ymm1, YMMWORD [ecx+0*SIZEOF_YMMWORD] ; ymm1=row[-1][0]
vmovdqu ymm2, YMMWORD [esi+0*SIZEOF_YMMWORD] ; ymm2=row[+1][0]
pushpic ebx
movpic ebx, POINTER [gotptr] ; load GOT address
vpxor ymm3, ymm3, ymm3 ; ymm3=(all 0's)
vpunpckhbw ymm4, ymm0, ymm3 ; ymm4=row[ 0]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm5, ymm0, ymm3 ; ymm5=row[ 0]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm0, ymm5, ymm4, 0x20 ; ymm0=row[ 0]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4=row[ 0](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpunpckhbw ymm5, ymm1, ymm3 ; ymm5=row[-1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm6, ymm1, ymm3 ; ymm6=row[-1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm1, ymm6, ymm5, 0x20 ; ymm1=row[-1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5=row[-1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpunpckhbw ymm6, ymm2, ymm3 ; ymm6=row[+1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm3, ymm2, ymm3 ; ymm3=row[+1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm2, ymm3, ymm6, 0x20 ; ymm2=row[+1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm6, ymm3, ymm6, 0x31 ; ymm6=row[+1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpmullw ymm0, ymm0, [GOTOFF(ebx,PW_THREE)]
vpmullw ymm4, ymm4, [GOTOFF(ebx,PW_THREE)]
vpcmpeqb xmm7, xmm7, xmm7
vpsrldq xmm7, xmm7, (SIZEOF_XMMWORD-2) ; (ffff ---- ---- ... ---- ----) LSB is ffff
vpaddw ymm1, ymm1, ymm0 ; ymm1=Int0L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vpaddw ymm5, ymm5, ymm4 ; ymm5=Int0H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpaddw ymm2, ymm2, ymm0 ; ymm2=Int1L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vpaddw ymm6, ymm6, ymm4 ; ymm6=Int1H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vmovdqu YMMWORD [edx+0*SIZEOF_YMMWORD], ymm1 ; temporarily save
vmovdqu YMMWORD [edx+1*SIZEOF_YMMWORD], ymm5 ; the intermediate data
vmovdqu YMMWORD [edi+0*SIZEOF_YMMWORD], ymm2
vmovdqu YMMWORD [edi+1*SIZEOF_YMMWORD], ymm6
vpand ymm1, ymm1, ymm7 ; ymm1=( 0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vpand ymm2, ymm2, ymm7 ; ymm2=( 0 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vmovdqa YMMWORD [wk(0)], ymm1
vmovdqa YMMWORD [wk(1)], ymm2
poppic ebx
add eax, byte SIZEOF_YMMWORD-1
and eax, byte -SIZEOF_YMMWORD
cmp eax, byte SIZEOF_YMMWORD
ja short .columnloop
alignx 16, 7
.columnloop_last:
; -- process the last column block
pushpic ebx
movpic ebx, POINTER [gotptr] ; load GOT address
vpcmpeqb xmm1, xmm1, xmm1
vpslldq xmm1, xmm1, (SIZEOF_XMMWORD-2)
vperm2i128 ymm1, ymm1, ymm1, 1 ; (---- ---- ... ---- ---- ffff) MSB is ffff
vpand ymm2, ymm1, YMMWORD [edi+1*SIZEOF_YMMWORD]
vpand ymm1, ymm1, YMMWORD [edx+1*SIZEOF_YMMWORD]
vmovdqa YMMWORD [wk(2)], ymm1 ; ymm1=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 31)
vmovdqa YMMWORD [wk(3)], ymm2 ; ymm2=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 31)
jmp near .upsample
alignx 16, 7
.columnloop:
; -- process the next column block
vmovdqu ymm0, YMMWORD [ebx+1*SIZEOF_YMMWORD] ; ymm0=row[ 0][1]
vmovdqu ymm1, YMMWORD [ecx+1*SIZEOF_YMMWORD] ; ymm1=row[-1][1]
vmovdqu ymm2, YMMWORD [esi+1*SIZEOF_YMMWORD] ; ymm2=row[+1][1]
pushpic ebx
movpic ebx, POINTER [gotptr] ; load GOT address
vpxor ymm3, ymm3, ymm3 ; ymm3=(all 0's)
vpunpckhbw ymm4, ymm0, ymm3 ; ymm4=row[ 0]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm5, ymm0, ymm3 ; ymm5=row[ 0]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm0, ymm5, ymm4, 0x20 ; ymm0=row[ 0]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm4, ymm5, ymm4, 0x31 ; ymm4=row[ 0](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpunpckhbw ymm5, ymm1, ymm3 ; ymm5=row[-1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm6, ymm1, ymm3 ; ymm6=row[-1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm1, ymm6, ymm5, 0x20 ; ymm1=row[-1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm5, ymm6, ymm5, 0x31 ; ymm5=row[-1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpunpckhbw ymm6, ymm2, ymm3 ; ymm6=row[+1]( 8 9 10 11 12 13 14 15 24 25 26 27 28 29 30 31)
vpunpcklbw ymm7, ymm2, ymm3 ; ymm7=row[+1]( 0 1 2 3 4 5 6 7 16 17 18 19 20 21 22 23)
vperm2i128 ymm2, ymm7, ymm6, 0x20 ; ymm2=row[+1]( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vperm2i128 ymm6, ymm7, ymm6, 0x31 ; ymm6=row[+1](16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpmullw ymm0, ymm0, [GOTOFF(ebx,PW_THREE)]
vpmullw ymm4, ymm4, [GOTOFF(ebx,PW_THREE)]
vpaddw ymm1, ymm1, ymm0 ; ymm1=Int0L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vpaddw ymm5, ymm5, ymm4 ; ymm5=Int0H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpaddw ymm2, ymm2, ymm0 ; ymm2=Int1L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vpaddw ymm6, ymm6, ymm4 ; ymm6=Int1H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vmovdqu YMMWORD [edx+2*SIZEOF_YMMWORD], ymm1 ; temporarily save
vmovdqu YMMWORD [edx+3*SIZEOF_YMMWORD], ymm5 ; the intermediate data
vmovdqu YMMWORD [edi+2*SIZEOF_YMMWORD], ymm2
vmovdqu YMMWORD [edi+3*SIZEOF_YMMWORD], ymm6
vperm2i128 ymm1, ymm3, ymm1, 0x20
vpslldq ymm1, ymm1, 14 ; ymm1=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0)
vperm2i128 ymm2, ymm3, ymm2, 0x20
vpslldq ymm2, ymm2, 14 ; ymm2=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0)
vmovdqa YMMWORD [wk(2)], ymm1
vmovdqa YMMWORD [wk(3)], ymm2
.upsample:
; -- process the upper row
vmovdqu ymm7, YMMWORD [edx+0*SIZEOF_YMMWORD] ; ymm7=Int0L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vmovdqu ymm3, YMMWORD [edx+1*SIZEOF_YMMWORD] ; ymm3=Int0H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpxor ymm1, ymm1, ymm1 ; ymm1=(all 0's)
vperm2i128 ymm0, ymm1, ymm7, 0x03
vpalignr ymm0, ymm0, ymm7, 2 ; ymm0=( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --)
vperm2i128 ymm4, ymm1, ymm3, 0x20
vpslldq ymm4, ymm4, 14 ; ymm4=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 16)
vperm2i128 ymm5, ymm1, ymm7, 0x03
vpsrldq ymm5, ymm5, 14 ; ymm5=(15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vperm2i128 ymm6, ymm1, ymm3, 0x20
vpalignr ymm6, ymm3, ymm6, 14 ; ymm6=(-- 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
vpor ymm0, ymm0, ymm4 ; ymm0=( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16)
vpor ymm5, ymm5, ymm6 ; ymm5=(15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
vperm2i128 ymm2, ymm1, ymm3, 0x03
vpalignr ymm2, ymm2, ymm3, 2 ; ymm2=(17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 --)
vperm2i128 ymm4, ymm1, ymm3, 0x03
vpsrldq ymm4, ymm4, 14 ; ymm4=(31 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vperm2i128 ymm1, ymm1, ymm7, 0x20
vpalignr ymm1, ymm7, ymm1, 14 ; ymm1=(-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
vpor ymm1, ymm1, YMMWORD [wk(0)] ; ymm1=(-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
vpor ymm2, ymm2, YMMWORD [wk(2)] ; ymm2=(17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32)
vmovdqa YMMWORD [wk(0)], ymm4
vpmullw ymm7, ymm7, [GOTOFF(ebx,PW_THREE)]
vpmullw ymm3, ymm3, [GOTOFF(ebx,PW_THREE)]
vpaddw ymm1, ymm1, [GOTOFF(ebx,PW_EIGHT)]
vpaddw ymm5, ymm5, [GOTOFF(ebx,PW_EIGHT)]
vpaddw ymm0, ymm0, [GOTOFF(ebx,PW_SEVEN)]
vpaddw ymm2, [GOTOFF(ebx,PW_SEVEN)]
vpaddw ymm1, ymm1, ymm7
vpaddw ymm5, ymm5, ymm3
vpsrlw ymm1, ymm1, 4 ; ymm1=Out0LE=( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30)
vpsrlw ymm5, ymm5, 4 ; ymm5=Out0HE=(32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62)
vpaddw ymm0, ymm0, ymm7
vpaddw ymm2, ymm2, ymm3
vpsrlw ymm0, ymm0, 4 ; ymm0=Out0LO=( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31)
vpsrlw ymm2, ymm2, 4 ; ymm2=Out0HO=(33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63)
vpsllw ymm0, ymm0, BYTE_BIT
vpsllw ymm2, ymm2, BYTE_BIT
vpor ymm1, ymm1, ymm0 ; ymm1=Out0L=( 0 1 2 ... 29 30 31)
vpor ymm5, ymm5, ymm2 ; ymm5=Out0H=(32 33 34 ... 61 62 63)
vmovdqu YMMWORD [edx+0*SIZEOF_YMMWORD], ymm1
vmovdqu YMMWORD [edx+1*SIZEOF_YMMWORD], ymm5
; -- process the lower row
vmovdqu ymm6, YMMWORD [edi+0*SIZEOF_YMMWORD] ; ymm6=Int1L=( 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15)
vmovdqu ymm4, YMMWORD [edi+1*SIZEOF_YMMWORD] ; ymm4=Int1H=(16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31)
vpxor ymm1, ymm1, ymm1 ; ymm1=(all 0's)
vperm2i128 ymm7, ymm1, ymm6, 0x03
vpalignr ymm7, ymm7, ymm6, 2 ; ymm7=( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 --)
vperm2i128 ymm3, ymm1, ymm4, 0x20
vpslldq ymm3, ymm3, 14 ; ymm3=(-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 16)
vperm2i128 ymm0, ymm1, ymm6, 0x03
vpsrldq ymm0, ymm0, 14 ; ymm0=(15 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vperm2i128 ymm2, ymm1, ymm4, 0x20
vpalignr ymm2, ymm4, ymm2, 14 ; ymm2=(-- 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
vpor ymm7, ymm7, ymm3 ; ymm7=( 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16)
vpor ymm0, ymm0, ymm2 ; ymm0=(15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30)
vperm2i128 ymm5, ymm1, ymm4, 0x03
vpalignr ymm5, ymm5, ymm4, 2 ; ymm5=(17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 --)
vperm2i128 ymm3, ymm1, ymm4, 0x03
vpsrldq ymm3, ymm3, 14 ; ymm3=(31 -- -- -- -- -- -- -- -- -- -- -- -- -- -- --)
vperm2i128 ymm1, ymm1, ymm6, 0x20
vpalignr ymm1, ymm6, ymm1, 14 ; ymm1=(-- 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
vpor ymm1, ymm1, YMMWORD [wk(1)] ; ymm1=(-1 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14)
vpor ymm5, ymm5, YMMWORD [wk(3)] ; ymm5=(17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32)
vmovdqa YMMWORD [wk(1)], ymm3
vpmullw ymm6, ymm6, [GOTOFF(ebx,PW_THREE)]
vpmullw ymm4, ymm4, [GOTOFF(ebx,PW_THREE)]
vpaddw ymm1, ymm1, [GOTOFF(ebx,PW_EIGHT)]
vpaddw ymm0, ymm0, [GOTOFF(ebx,PW_EIGHT)]
vpaddw ymm7, ymm7, [GOTOFF(ebx,PW_SEVEN)]
vpaddw ymm5, ymm5, [GOTOFF(ebx,PW_SEVEN)]
vpaddw ymm1, ymm1, ymm6
vpaddw ymm0, ymm0, ymm4
vpsrlw ymm1, ymm1, 4 ; ymm1=Out1LE=( 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30)
vpsrlw ymm0, ymm0, 4 ; ymm0=Out1HE=(32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62)
vpaddw ymm7, ymm7, ymm6
vpaddw ymm5, ymm5, ymm4
vpsrlw ymm7, ymm7, 4 ; ymm7=Out1LO=( 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31)
vpsrlw ymm5, ymm5, 4 ; ymm5=Out1HO=(33 35 37 39 41 43 45 47 49 51 53 55 57 59 61 63)
vpsllw ymm7, ymm7, BYTE_BIT
vpsllw ymm5, ymm5, BYTE_BIT
vpor ymm1, ymm1, ymm7 ; ymm1=Out1L=( 0 1 2 ... 29 30 31)
vpor ymm0, ymm0, ymm5 ; ymm0=Out1H=(32 33 34 ... 61 62 63)
vmovdqu YMMWORD [edi+0*SIZEOF_YMMWORD], ymm1
vmovdqu YMMWORD [edi+1*SIZEOF_YMMWORD], ymm0
poppic ebx
sub eax, byte SIZEOF_YMMWORD
add ecx, byte 1*SIZEOF_YMMWORD ; inptr1(above)
add ebx, byte 1*SIZEOF_YMMWORD ; inptr0
add esi, byte 1*SIZEOF_YMMWORD ; inptr1(below)
add edx, byte 2*SIZEOF_YMMWORD ; outptr0
add edi, byte 2*SIZEOF_YMMWORD ; outptr1
cmp eax, byte SIZEOF_YMMWORD
ja near .columnloop
test eax, eax
jnz near .columnloop_last
pop esi
pop edi
pop ecx
pop eax
add esi, byte 1*SIZEOF_JSAMPROW ; input_data
add edi, byte 2*SIZEOF_JSAMPROW ; output_data
sub ecx, byte 2 ; rowctr
jg near .rowloop
.return:
vzeroupper
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
pop ebx
mov esp, ebp ; esp <- aligned ebp
pop esp ; esp <- original ebp
pop ebp
ret
; --------------------------------------------------------------------------
;
; Fast processing for the common case of 2:1 horizontal and 1:1 vertical.
; It's still a box filter.
;
; GLOBAL(void)
; jsimd_h2v1_upsample_avx2(int max_v_samp_factor, JDIMENSION output_width,
; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr);
;
%define max_v_samp(b) (b) + 8 ; int max_v_samp_factor
%define output_width(b) (b) + 12 ; JDIMENSION output_width
%define input_data(b) (b) + 16 ; JSAMPARRAY input_data
%define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr
align 32
GLOBAL_FUNCTION(jsimd_h2v1_upsample_avx2)
EXTN(jsimd_h2v1_upsample_avx2):
push ebp
mov ebp, esp
; push ebx ; unused
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
mov edx, JDIMENSION [output_width(ebp)]
add edx, byte (SIZEOF_YMMWORD-1)
and edx, -SIZEOF_YMMWORD
jz short .return
mov ecx, INT [max_v_samp(ebp)] ; rowctr
test ecx, ecx
jz short .return
mov esi, JSAMPARRAY [input_data(ebp)] ; input_data
mov edi, POINTER [output_data_ptr(ebp)]
mov edi, JSAMPARRAY [edi] ; output_data
alignx 16, 7
.rowloop:
push edi
push esi
mov esi, JSAMPROW [esi] ; inptr
mov edi, JSAMPROW [edi] ; outptr
mov eax, edx ; colctr
alignx 16, 7
.columnloop:
cmp eax, byte SIZEOF_YMMWORD
ja near .above_16
vmovdqu xmm0, XMMWORD [esi+0*SIZEOF_YMMWORD]
vpunpckhbw xmm1, xmm0, xmm0
vpunpcklbw xmm0, xmm0, xmm0
vmovdqu XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0
vmovdqu XMMWORD [edi+1*SIZEOF_XMMWORD], xmm1
jmp short .nextrow
.above_16:
vmovdqu ymm0, YMMWORD [esi+0*SIZEOF_YMMWORD]
vpermq ymm0, ymm0, 0xd8
vpunpckhbw ymm1, ymm0, ymm0
vpunpcklbw ymm0, ymm0, ymm0
vmovdqu YMMWORD [edi+0*SIZEOF_YMMWORD], ymm0
vmovdqu YMMWORD [edi+1*SIZEOF_YMMWORD], ymm1
sub eax, byte 2*SIZEOF_YMMWORD
jz short .nextrow
add esi, byte SIZEOF_YMMWORD ; inptr
add edi, byte 2*SIZEOF_YMMWORD ; outptr
jmp short .columnloop
alignx 16, 7
.nextrow:
pop esi
pop edi
add esi, byte SIZEOF_JSAMPROW ; input_data
add edi, byte SIZEOF_JSAMPROW ; output_data
dec ecx ; rowctr
jg short .rowloop
.return:
vzeroupper
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
; pop ebx ; unused
pop ebp
ret
; --------------------------------------------------------------------------
;
; Fast processing for the common case of 2:1 horizontal and 2:1 vertical.
; It's still a box filter.
;
; GLOBAL(void)
; jsimd_h2v2_upsample_avx2(int max_v_samp_factor, JDIMENSION output_width,
; JSAMPARRAY input_data, JSAMPARRAY *output_data_ptr);
;
%define max_v_samp(b) (b) + 8 ; int max_v_samp_factor
%define output_width(b) (b) + 12 ; JDIMENSION output_width
%define input_data(b) (b) + 16 ; JSAMPARRAY input_data
%define output_data_ptr(b) (b) + 20 ; JSAMPARRAY *output_data_ptr
align 32
GLOBAL_FUNCTION(jsimd_h2v2_upsample_avx2)
EXTN(jsimd_h2v2_upsample_avx2):
push ebp
mov ebp, esp
push ebx
; push ecx ; need not be preserved
; push edx ; need not be preserved
push esi
push edi
mov edx, JDIMENSION [output_width(ebp)]
add edx, byte (SIZEOF_YMMWORD-1)
and edx, -SIZEOF_YMMWORD
jz near .return
mov ecx, INT [max_v_samp(ebp)] ; rowctr
test ecx, ecx
jz near .return
mov esi, JSAMPARRAY [input_data(ebp)] ; input_data
mov edi, POINTER [output_data_ptr(ebp)]
mov edi, JSAMPARRAY [edi] ; output_data
alignx 16, 7
.rowloop:
push edi
push esi
mov esi, JSAMPROW [esi] ; inptr
mov ebx, JSAMPROW [edi+0*SIZEOF_JSAMPROW] ; outptr0
mov edi, JSAMPROW [edi+1*SIZEOF_JSAMPROW] ; outptr1
mov eax, edx ; colctr
alignx 16, 7
.columnloop:
cmp eax, byte SIZEOF_YMMWORD
ja short .above_16
vmovdqu xmm0, XMMWORD [esi+0*SIZEOF_XMMWORD]
vpunpckhbw xmm1, xmm0, xmm0
vpunpcklbw xmm0, xmm0, xmm0
vmovdqu XMMWORD [ebx+0*SIZEOF_XMMWORD], xmm0
vmovdqu XMMWORD [ebx+1*SIZEOF_XMMWORD], xmm1
vmovdqu XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0
vmovdqu XMMWORD [edi+1*SIZEOF_XMMWORD], xmm1
jmp near .nextrow
.above_16:
vmovdqu ymm0, YMMWORD [esi+0*SIZEOF_YMMWORD]
vpermq ymm0, ymm0, 0xd8
vpunpckhbw ymm1, ymm0, ymm0
vpunpcklbw ymm0, ymm0, ymm0
vmovdqu YMMWORD [ebx+0*SIZEOF_YMMWORD], ymm0
vmovdqu YMMWORD [ebx+1*SIZEOF_YMMWORD], ymm1
vmovdqu YMMWORD [edi+0*SIZEOF_YMMWORD], ymm0
vmovdqu YMMWORD [edi+1*SIZEOF_YMMWORD], ymm1
sub eax, byte 2*SIZEOF_YMMWORD
jz short .nextrow
add esi, byte SIZEOF_YMMWORD ; inptr
add ebx, 2*SIZEOF_YMMWORD ; outptr0
add edi, 2*SIZEOF_YMMWORD ; outptr1
jmp short .columnloop
alignx 16, 7
.nextrow:
pop esi
pop edi
add esi, byte 1*SIZEOF_JSAMPROW ; input_data
add edi, byte 2*SIZEOF_JSAMPROW ; output_data
sub ecx, byte 2 ; rowctr
jg near .rowloop
.return:
vzeroupper
pop edi
pop esi
; pop edx ; need not be preserved
; pop ecx ; need not be preserved
pop ebx
pop ebp
ret
; For some reason, the OS X linker does not honor the request to align the
; segment unless we do this.
align 32
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