| ; |
| ; jfdctflt.asm - floating-point FDCT (64-bit SSE) |
| ; |
| ; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB |
| ; Copyright 2009 D. R. Commander |
| ; |
| ; Based on |
| ; 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 |
| ; |
| ; This file contains a floating-point implementation of the forward DCT |
| ; (Discrete Cosine Transform). The following code is based directly on |
| ; the IJG's original jfdctflt.c; see the jfdctflt.c for more details. |
| ; |
| ; [TAB8] |
| |
| %include "jsimdext.inc" |
| %include "jdct.inc" |
| |
| ; -------------------------------------------------------------------------- |
| |
| %macro unpcklps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(0 1 4 5) |
| shufps %1,%2,0x44 |
| %endmacro |
| |
| %macro unpckhps2 2 ; %1=(0 1 2 3) / %2=(4 5 6 7) => %1=(2 3 6 7) |
| shufps %1,%2,0xEE |
| %endmacro |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_CONST |
| |
| alignz 16 |
| global EXTN(jconst_fdct_float_sse) |
| |
| EXTN(jconst_fdct_float_sse): |
| |
| PD_0_382 times 4 dd 0.382683432365089771728460 |
| PD_0_707 times 4 dd 0.707106781186547524400844 |
| PD_0_541 times 4 dd 0.541196100146196984399723 |
| PD_1_306 times 4 dd 1.306562964876376527856643 |
| |
| alignz 16 |
| |
| ; -------------------------------------------------------------------------- |
| SECTION SEG_TEXT |
| BITS 64 |
| ; |
| ; Perform the forward DCT on one block of samples. |
| ; |
| ; GLOBAL(void) |
| ; jsimd_fdct_float_sse (FAST_FLOAT * data) |
| ; |
| |
| ; r10 = FAST_FLOAT * data |
| |
| %define wk(i) rbp-(WK_NUM-(i))*SIZEOF_XMMWORD ; xmmword wk[WK_NUM] |
| %define WK_NUM 2 |
| |
| align 16 |
| global EXTN(jsimd_fdct_float_sse) |
| |
| EXTN(jsimd_fdct_float_sse): |
| push rbp |
| mov rax,rsp ; rax = original rbp |
| sub rsp, byte 4 |
| and rsp, byte (-SIZEOF_XMMWORD) ; align to 128 bits |
| mov [rsp],rax |
| mov rbp,rsp ; rbp = aligned rbp |
| lea rsp, [wk(0)] |
| collect_args |
| |
| ; ---- Pass 1: process rows. |
| |
| mov rdx, r10 ; (FAST_FLOAT *) |
| mov rcx, DCTSIZE/4 |
| .rowloop: |
| |
| movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm2, XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm3, XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)] |
| |
| ; xmm0=(20 21 22 23), xmm2=(24 25 26 27) |
| ; xmm1=(30 31 32 33), xmm3=(34 35 36 37) |
| |
| movaps xmm4,xmm0 ; transpose coefficients(phase 1) |
| unpcklps xmm0,xmm1 ; xmm0=(20 30 21 31) |
| unpckhps xmm4,xmm1 ; xmm4=(22 32 23 33) |
| movaps xmm5,xmm2 ; transpose coefficients(phase 1) |
| unpcklps xmm2,xmm3 ; xmm2=(24 34 25 35) |
| unpckhps xmm5,xmm3 ; xmm5=(26 36 27 37) |
| |
| movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm1, XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm3, XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)] |
| |
| ; xmm6=(00 01 02 03), xmm1=(04 05 06 07) |
| ; xmm7=(10 11 12 13), xmm3=(14 15 16 17) |
| |
| movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 32 23 33) |
| movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(24 34 25 35) |
| |
| movaps xmm4,xmm6 ; transpose coefficients(phase 1) |
| unpcklps xmm6,xmm7 ; xmm6=(00 10 01 11) |
| unpckhps xmm4,xmm7 ; xmm4=(02 12 03 13) |
| movaps xmm2,xmm1 ; transpose coefficients(phase 1) |
| unpcklps xmm1,xmm3 ; xmm1=(04 14 05 15) |
| unpckhps xmm2,xmm3 ; xmm2=(06 16 07 17) |
| |
| movaps xmm7,xmm6 ; transpose coefficients(phase 2) |
| unpcklps2 xmm6,xmm0 ; xmm6=(00 10 20 30)=data0 |
| unpckhps2 xmm7,xmm0 ; xmm7=(01 11 21 31)=data1 |
| movaps xmm3,xmm2 ; transpose coefficients(phase 2) |
| unpcklps2 xmm2,xmm5 ; xmm2=(06 16 26 36)=data6 |
| unpckhps2 xmm3,xmm5 ; xmm3=(07 17 27 37)=data7 |
| |
| movaps xmm0,xmm7 |
| movaps xmm5,xmm6 |
| subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 |
| subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 |
| addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 |
| addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 |
| |
| movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 32 23 33) |
| movaps xmm3, XMMWORD [wk(1)] ; xmm3=(24 34 25 35) |
| movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 |
| movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 |
| |
| movaps xmm7,xmm4 ; transpose coefficients(phase 2) |
| unpcklps2 xmm4,xmm2 ; xmm4=(02 12 22 32)=data2 |
| unpckhps2 xmm7,xmm2 ; xmm7=(03 13 23 33)=data3 |
| movaps xmm6,xmm1 ; transpose coefficients(phase 2) |
| unpcklps2 xmm1,xmm3 ; xmm1=(04 14 24 34)=data4 |
| unpckhps2 xmm6,xmm3 ; xmm6=(05 15 25 35)=data5 |
| |
| movaps xmm2,xmm7 |
| movaps xmm3,xmm4 |
| addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 |
| addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 |
| subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 |
| subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 |
| |
| ; -- Even part |
| |
| movaps xmm1,xmm5 |
| movaps xmm6,xmm0 |
| subps xmm5,xmm7 ; xmm5=tmp13 |
| subps xmm0,xmm4 ; xmm0=tmp12 |
| addps xmm1,xmm7 ; xmm1=tmp10 |
| addps xmm6,xmm4 ; xmm6=tmp11 |
| |
| addps xmm0,xmm5 |
| mulps xmm0,[rel PD_0_707] ; xmm0=z1 |
| |
| movaps xmm7,xmm1 |
| movaps xmm4,xmm5 |
| subps xmm1,xmm6 ; xmm1=data4 |
| subps xmm5,xmm0 ; xmm5=data6 |
| addps xmm7,xmm6 ; xmm7=data0 |
| addps xmm4,xmm0 ; xmm4=data2 |
| |
| movaps XMMWORD [XMMBLOCK(0,1,rdx,SIZEOF_FAST_FLOAT)], xmm1 |
| movaps XMMWORD [XMMBLOCK(2,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
| movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
| movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
| |
| ; -- Odd part |
| |
| movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 |
| movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 |
| |
| addps xmm2,xmm3 ; xmm2=tmp10 |
| addps xmm3,xmm6 ; xmm3=tmp11 |
| addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 |
| |
| mulps xmm3,[rel PD_0_707] ; xmm3=z3 |
| |
| movaps xmm1,xmm2 ; xmm1=tmp10 |
| subps xmm2,xmm6 |
| mulps xmm2,[rel PD_0_382] ; xmm2=z5 |
| mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) |
| mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) |
| addps xmm1,xmm2 ; xmm1=z2 |
| addps xmm6,xmm2 ; xmm6=z4 |
| |
| movaps xmm5,xmm0 |
| subps xmm0,xmm3 ; xmm0=z13 |
| addps xmm5,xmm3 ; xmm5=z11 |
| |
| movaps xmm7,xmm0 |
| movaps xmm4,xmm5 |
| subps xmm0,xmm1 ; xmm0=data3 |
| subps xmm5,xmm6 ; xmm5=data7 |
| addps xmm7,xmm1 ; xmm7=data5 |
| addps xmm4,xmm6 ; xmm4=data1 |
| |
| movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 |
| movaps XMMWORD [XMMBLOCK(3,1,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
| movaps XMMWORD [XMMBLOCK(1,1,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
| movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
| |
| add rdx, 4*DCTSIZE*SIZEOF_FAST_FLOAT |
| dec rcx |
| jnz near .rowloop |
| |
| ; ---- Pass 2: process columns. |
| |
| mov rdx, r10 ; (FAST_FLOAT *) |
| mov rcx, DCTSIZE/4 |
| .columnloop: |
| |
| movaps xmm0, XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm1, XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm2, XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm3, XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)] |
| |
| ; xmm0=(02 12 22 32), xmm2=(42 52 62 72) |
| ; xmm1=(03 13 23 33), xmm3=(43 53 63 73) |
| |
| movaps xmm4,xmm0 ; transpose coefficients(phase 1) |
| unpcklps xmm0,xmm1 ; xmm0=(02 03 12 13) |
| unpckhps xmm4,xmm1 ; xmm4=(22 23 32 33) |
| movaps xmm5,xmm2 ; transpose coefficients(phase 1) |
| unpcklps xmm2,xmm3 ; xmm2=(42 43 52 53) |
| unpckhps xmm5,xmm3 ; xmm5=(62 63 72 73) |
| |
| movaps xmm6, XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm7, XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm1, XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)] |
| movaps xmm3, XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)] |
| |
| ; xmm6=(00 10 20 30), xmm1=(40 50 60 70) |
| ; xmm7=(01 11 21 31), xmm3=(41 51 61 71) |
| |
| movaps XMMWORD [wk(0)], xmm4 ; wk(0)=(22 23 32 33) |
| movaps XMMWORD [wk(1)], xmm2 ; wk(1)=(42 43 52 53) |
| |
| movaps xmm4,xmm6 ; transpose coefficients(phase 1) |
| unpcklps xmm6,xmm7 ; xmm6=(00 01 10 11) |
| unpckhps xmm4,xmm7 ; xmm4=(20 21 30 31) |
| movaps xmm2,xmm1 ; transpose coefficients(phase 1) |
| unpcklps xmm1,xmm3 ; xmm1=(40 41 50 51) |
| unpckhps xmm2,xmm3 ; xmm2=(60 61 70 71) |
| |
| movaps xmm7,xmm6 ; transpose coefficients(phase 2) |
| unpcklps2 xmm6,xmm0 ; xmm6=(00 01 02 03)=data0 |
| unpckhps2 xmm7,xmm0 ; xmm7=(10 11 12 13)=data1 |
| movaps xmm3,xmm2 ; transpose coefficients(phase 2) |
| unpcklps2 xmm2,xmm5 ; xmm2=(60 61 62 63)=data6 |
| unpckhps2 xmm3,xmm5 ; xmm3=(70 71 72 73)=data7 |
| |
| movaps xmm0,xmm7 |
| movaps xmm5,xmm6 |
| subps xmm7,xmm2 ; xmm7=data1-data6=tmp6 |
| subps xmm6,xmm3 ; xmm6=data0-data7=tmp7 |
| addps xmm0,xmm2 ; xmm0=data1+data6=tmp1 |
| addps xmm5,xmm3 ; xmm5=data0+data7=tmp0 |
| |
| movaps xmm2, XMMWORD [wk(0)] ; xmm2=(22 23 32 33) |
| movaps xmm3, XMMWORD [wk(1)] ; xmm3=(42 43 52 53) |
| movaps XMMWORD [wk(0)], xmm7 ; wk(0)=tmp6 |
| movaps XMMWORD [wk(1)], xmm6 ; wk(1)=tmp7 |
| |
| movaps xmm7,xmm4 ; transpose coefficients(phase 2) |
| unpcklps2 xmm4,xmm2 ; xmm4=(20 21 22 23)=data2 |
| unpckhps2 xmm7,xmm2 ; xmm7=(30 31 32 33)=data3 |
| movaps xmm6,xmm1 ; transpose coefficients(phase 2) |
| unpcklps2 xmm1,xmm3 ; xmm1=(40 41 42 43)=data4 |
| unpckhps2 xmm6,xmm3 ; xmm6=(50 51 52 53)=data5 |
| |
| movaps xmm2,xmm7 |
| movaps xmm3,xmm4 |
| addps xmm7,xmm1 ; xmm7=data3+data4=tmp3 |
| addps xmm4,xmm6 ; xmm4=data2+data5=tmp2 |
| subps xmm2,xmm1 ; xmm2=data3-data4=tmp4 |
| subps xmm3,xmm6 ; xmm3=data2-data5=tmp5 |
| |
| ; -- Even part |
| |
| movaps xmm1,xmm5 |
| movaps xmm6,xmm0 |
| subps xmm5,xmm7 ; xmm5=tmp13 |
| subps xmm0,xmm4 ; xmm0=tmp12 |
| addps xmm1,xmm7 ; xmm1=tmp10 |
| addps xmm6,xmm4 ; xmm6=tmp11 |
| |
| addps xmm0,xmm5 |
| mulps xmm0,[rel PD_0_707] ; xmm0=z1 |
| |
| movaps xmm7,xmm1 |
| movaps xmm4,xmm5 |
| subps xmm1,xmm6 ; xmm1=data4 |
| subps xmm5,xmm0 ; xmm5=data6 |
| addps xmm7,xmm6 ; xmm7=data0 |
| addps xmm4,xmm0 ; xmm4=data2 |
| |
| movaps XMMWORD [XMMBLOCK(4,0,rdx,SIZEOF_FAST_FLOAT)], xmm1 |
| movaps XMMWORD [XMMBLOCK(6,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
| movaps XMMWORD [XMMBLOCK(0,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
| movaps XMMWORD [XMMBLOCK(2,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
| |
| ; -- Odd part |
| |
| movaps xmm6, XMMWORD [wk(0)] ; xmm6=tmp6 |
| movaps xmm0, XMMWORD [wk(1)] ; xmm0=tmp7 |
| |
| addps xmm2,xmm3 ; xmm2=tmp10 |
| addps xmm3,xmm6 ; xmm3=tmp11 |
| addps xmm6,xmm0 ; xmm6=tmp12, xmm0=tmp7 |
| |
| mulps xmm3,[rel PD_0_707] ; xmm3=z3 |
| |
| movaps xmm1,xmm2 ; xmm1=tmp10 |
| subps xmm2,xmm6 |
| mulps xmm2,[rel PD_0_382] ; xmm2=z5 |
| mulps xmm1,[rel PD_0_541] ; xmm1=MULTIPLY(tmp10,FIX_0_541196) |
| mulps xmm6,[rel PD_1_306] ; xmm6=MULTIPLY(tmp12,FIX_1_306562) |
| addps xmm1,xmm2 ; xmm1=z2 |
| addps xmm6,xmm2 ; xmm6=z4 |
| |
| movaps xmm5,xmm0 |
| subps xmm0,xmm3 ; xmm0=z13 |
| addps xmm5,xmm3 ; xmm5=z11 |
| |
| movaps xmm7,xmm0 |
| movaps xmm4,xmm5 |
| subps xmm0,xmm1 ; xmm0=data3 |
| subps xmm5,xmm6 ; xmm5=data7 |
| addps xmm7,xmm1 ; xmm7=data5 |
| addps xmm4,xmm6 ; xmm4=data1 |
| |
| movaps XMMWORD [XMMBLOCK(3,0,rdx,SIZEOF_FAST_FLOAT)], xmm0 |
| movaps XMMWORD [XMMBLOCK(7,0,rdx,SIZEOF_FAST_FLOAT)], xmm5 |
| movaps XMMWORD [XMMBLOCK(5,0,rdx,SIZEOF_FAST_FLOAT)], xmm7 |
| movaps XMMWORD [XMMBLOCK(1,0,rdx,SIZEOF_FAST_FLOAT)], xmm4 |
| |
| add rdx, byte 4*SIZEOF_FAST_FLOAT |
| dec rcx |
| jnz near .columnloop |
| |
| uncollect_args |
| mov rsp,rbp ; rsp <- aligned rbp |
| pop rsp ; rsp <- original rbp |
| 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 |
