mirror of
https://bitbucket.org/CPMADevs/cnq3
synced 2024-12-01 16:31:54 +00:00
fc9465caab
aside from the speed improvements, this also makes for nicer code in the renderer interaction with libjpeg, thanks to mem_dest support etc
186 lines
6.3 KiB
NASM
186 lines
6.3 KiB
NASM
;
|
|
; jquanti.asm - sample data conversion and quantization (64-bit SSE2)
|
|
;
|
|
; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
|
|
; Copyright (C) 2009, 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"
|
|
%include "jdct.inc"
|
|
|
|
; --------------------------------------------------------------------------
|
|
SECTION SEG_TEXT
|
|
BITS 64
|
|
;
|
|
; Load data into workspace, applying unsigned->signed conversion
|
|
;
|
|
; GLOBAL(void)
|
|
; jsimd_convsamp_sse2 (JSAMPARRAY sample_data, JDIMENSION start_col,
|
|
; DCTELEM *workspace);
|
|
;
|
|
|
|
; r10 = JSAMPARRAY sample_data
|
|
; r11 = JDIMENSION start_col
|
|
; r12 = DCTELEM *workspace
|
|
|
|
align 16
|
|
global EXTN(jsimd_convsamp_sse2)
|
|
|
|
EXTN(jsimd_convsamp_sse2):
|
|
push rbp
|
|
mov rax,rsp
|
|
mov rbp,rsp
|
|
collect_args
|
|
push rbx
|
|
|
|
pxor xmm6,xmm6 ; xmm6=(all 0's)
|
|
pcmpeqw xmm7,xmm7
|
|
psllw xmm7,7 ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
|
|
|
|
mov rsi, r10
|
|
mov eax, r11d
|
|
mov rdi, r12
|
|
mov rcx, DCTSIZE/4
|
|
.convloop:
|
|
mov rbx, JSAMPROW [rsi+0*SIZEOF_JSAMPROW] ; (JSAMPLE *)
|
|
mov rdx, JSAMPROW [rsi+1*SIZEOF_JSAMPROW] ; (JSAMPLE *)
|
|
|
|
movq xmm0, XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE] ; xmm0=(01234567)
|
|
movq xmm1, XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE] ; xmm1=(89ABCDEF)
|
|
|
|
mov rbx, JSAMPROW [rsi+2*SIZEOF_JSAMPROW] ; (JSAMPLE *)
|
|
mov rdx, JSAMPROW [rsi+3*SIZEOF_JSAMPROW] ; (JSAMPLE *)
|
|
|
|
movq xmm2, XMM_MMWORD [rbx+rax*SIZEOF_JSAMPLE] ; xmm2=(GHIJKLMN)
|
|
movq xmm3, XMM_MMWORD [rdx+rax*SIZEOF_JSAMPLE] ; xmm3=(OPQRSTUV)
|
|
|
|
punpcklbw xmm0,xmm6 ; xmm0=(01234567)
|
|
punpcklbw xmm1,xmm6 ; xmm1=(89ABCDEF)
|
|
paddw xmm0,xmm7
|
|
paddw xmm1,xmm7
|
|
punpcklbw xmm2,xmm6 ; xmm2=(GHIJKLMN)
|
|
punpcklbw xmm3,xmm6 ; xmm3=(OPQRSTUV)
|
|
paddw xmm2,xmm7
|
|
paddw xmm3,xmm7
|
|
|
|
movdqa XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_DCTELEM)], xmm0
|
|
movdqa XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_DCTELEM)], xmm1
|
|
movdqa XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_DCTELEM)], xmm2
|
|
movdqa XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_DCTELEM)], xmm3
|
|
|
|
add rsi, byte 4*SIZEOF_JSAMPROW
|
|
add rdi, byte 4*DCTSIZE*SIZEOF_DCTELEM
|
|
dec rcx
|
|
jnz short .convloop
|
|
|
|
pop rbx
|
|
uncollect_args
|
|
pop rbp
|
|
ret
|
|
|
|
; --------------------------------------------------------------------------
|
|
;
|
|
; Quantize/descale the coefficients, and store into coef_block
|
|
;
|
|
; This implementation is based on an algorithm described in
|
|
; "How to optimize for the Pentium family of microprocessors"
|
|
; (http://www.agner.org/assem/).
|
|
;
|
|
; GLOBAL(void)
|
|
; jsimd_quantize_sse2 (JCOEFPTR coef_block, DCTELEM *divisors,
|
|
; DCTELEM *workspace);
|
|
;
|
|
|
|
%define RECIPROCAL(m,n,b) XMMBLOCK(DCTSIZE*0+(m),(n),(b),SIZEOF_DCTELEM)
|
|
%define CORRECTION(m,n,b) XMMBLOCK(DCTSIZE*1+(m),(n),(b),SIZEOF_DCTELEM)
|
|
%define SCALE(m,n,b) XMMBLOCK(DCTSIZE*2+(m),(n),(b),SIZEOF_DCTELEM)
|
|
|
|
; r10 = JCOEFPTR coef_block
|
|
; r11 = DCTELEM *divisors
|
|
; r12 = DCTELEM *workspace
|
|
|
|
align 16
|
|
global EXTN(jsimd_quantize_sse2)
|
|
|
|
EXTN(jsimd_quantize_sse2):
|
|
push rbp
|
|
mov rax,rsp
|
|
mov rbp,rsp
|
|
collect_args
|
|
|
|
mov rsi, r12
|
|
mov rdx, r11
|
|
mov rdi, r10
|
|
mov rax, DCTSIZE2/32
|
|
.quantloop:
|
|
movdqa xmm4, XMMWORD [XMMBLOCK(0,0,rsi,SIZEOF_DCTELEM)]
|
|
movdqa xmm5, XMMWORD [XMMBLOCK(1,0,rsi,SIZEOF_DCTELEM)]
|
|
movdqa xmm6, XMMWORD [XMMBLOCK(2,0,rsi,SIZEOF_DCTELEM)]
|
|
movdqa xmm7, XMMWORD [XMMBLOCK(3,0,rsi,SIZEOF_DCTELEM)]
|
|
movdqa xmm0,xmm4
|
|
movdqa xmm1,xmm5
|
|
movdqa xmm2,xmm6
|
|
movdqa xmm3,xmm7
|
|
psraw xmm4,(WORD_BIT-1)
|
|
psraw xmm5,(WORD_BIT-1)
|
|
psraw xmm6,(WORD_BIT-1)
|
|
psraw xmm7,(WORD_BIT-1)
|
|
pxor xmm0,xmm4
|
|
pxor xmm1,xmm5
|
|
pxor xmm2,xmm6
|
|
pxor xmm3,xmm7
|
|
psubw xmm0,xmm4 ; if (xmm0 < 0) xmm0 = -xmm0;
|
|
psubw xmm1,xmm5 ; if (xmm1 < 0) xmm1 = -xmm1;
|
|
psubw xmm2,xmm6 ; if (xmm2 < 0) xmm2 = -xmm2;
|
|
psubw xmm3,xmm7 ; if (xmm3 < 0) xmm3 = -xmm3;
|
|
|
|
paddw xmm0, XMMWORD [CORRECTION(0,0,rdx)] ; correction + roundfactor
|
|
paddw xmm1, XMMWORD [CORRECTION(1,0,rdx)]
|
|
paddw xmm2, XMMWORD [CORRECTION(2,0,rdx)]
|
|
paddw xmm3, XMMWORD [CORRECTION(3,0,rdx)]
|
|
pmulhuw xmm0, XMMWORD [RECIPROCAL(0,0,rdx)] ; reciprocal
|
|
pmulhuw xmm1, XMMWORD [RECIPROCAL(1,0,rdx)]
|
|
pmulhuw xmm2, XMMWORD [RECIPROCAL(2,0,rdx)]
|
|
pmulhuw xmm3, XMMWORD [RECIPROCAL(3,0,rdx)]
|
|
pmulhuw xmm0, XMMWORD [SCALE(0,0,rdx)] ; scale
|
|
pmulhuw xmm1, XMMWORD [SCALE(1,0,rdx)]
|
|
pmulhuw xmm2, XMMWORD [SCALE(2,0,rdx)]
|
|
pmulhuw xmm3, XMMWORD [SCALE(3,0,rdx)]
|
|
|
|
pxor xmm0,xmm4
|
|
pxor xmm1,xmm5
|
|
pxor xmm2,xmm6
|
|
pxor xmm3,xmm7
|
|
psubw xmm0,xmm4
|
|
psubw xmm1,xmm5
|
|
psubw xmm2,xmm6
|
|
psubw xmm3,xmm7
|
|
movdqa XMMWORD [XMMBLOCK(0,0,rdi,SIZEOF_DCTELEM)], xmm0
|
|
movdqa XMMWORD [XMMBLOCK(1,0,rdi,SIZEOF_DCTELEM)], xmm1
|
|
movdqa XMMWORD [XMMBLOCK(2,0,rdi,SIZEOF_DCTELEM)], xmm2
|
|
movdqa XMMWORD [XMMBLOCK(3,0,rdi,SIZEOF_DCTELEM)], xmm3
|
|
|
|
add rsi, byte 32*SIZEOF_DCTELEM
|
|
add rdx, byte 32*SIZEOF_DCTELEM
|
|
add rdi, byte 32*SIZEOF_JCOEF
|
|
dec rax
|
|
jnz near .quantloop
|
|
|
|
uncollect_args
|
|
pop rbp
|
|
ret
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 16
|