852 lines
33 KiB
NASM
852 lines
33 KiB
NASM
;
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; jidctint.asm - accurate integer IDCT (MMX)
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;
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; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
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; Copyright (C) 2016, D. R. Commander.
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;
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; Based on the x86 SIMD extension for IJG JPEG library
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; Copyright (C) 1999-2006, MIYASAKA Masaru.
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; For conditions of distribution and use, see copyright notice in jsimdext.inc
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;
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; This file should be assembled with NASM (Netwide Assembler),
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; can *not* be assembled with Microsoft's MASM or any compatible
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; assembler (including Borland's Turbo Assembler).
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; NASM is available from http://nasm.sourceforge.net/ or
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; http://sourceforge.net/project/showfiles.php?group_id=6208
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;
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; This file contains a slow-but-accurate integer implementation of the
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; inverse DCT (Discrete Cosine Transform). The following code is based
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; directly on the IJG's original jidctint.c; see the jidctint.c for
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; more details.
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%include "jsimdext.inc"
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%include "jdct.inc"
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; --------------------------------------------------------------------------
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%define CONST_BITS 13
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%define PASS1_BITS 2
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%define DESCALE_P1 (CONST_BITS - PASS1_BITS)
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%define DESCALE_P2 (CONST_BITS + PASS1_BITS + 3)
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%if CONST_BITS == 13
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F_0_298 equ 2446 ; FIX(0.298631336)
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F_0_390 equ 3196 ; FIX(0.390180644)
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F_0_541 equ 4433 ; FIX(0.541196100)
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F_0_765 equ 6270 ; FIX(0.765366865)
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F_0_899 equ 7373 ; FIX(0.899976223)
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F_1_175 equ 9633 ; FIX(1.175875602)
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F_1_501 equ 12299 ; FIX(1.501321110)
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F_1_847 equ 15137 ; FIX(1.847759065)
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F_1_961 equ 16069 ; FIX(1.961570560)
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F_2_053 equ 16819 ; FIX(2.053119869)
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F_2_562 equ 20995 ; FIX(2.562915447)
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F_3_072 equ 25172 ; FIX(3.072711026)
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%else
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; NASM cannot do compile-time arithmetic on floating-point constants.
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%define DESCALE(x, n) (((x) + (1 << ((n) - 1))) >> (n))
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F_0_298 equ DESCALE( 320652955, 30 - CONST_BITS) ; FIX(0.298631336)
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F_0_390 equ DESCALE( 418953276, 30 - CONST_BITS) ; FIX(0.390180644)
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F_0_541 equ DESCALE( 581104887, 30 - CONST_BITS) ; FIX(0.541196100)
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F_0_765 equ DESCALE( 821806413, 30 - CONST_BITS) ; FIX(0.765366865)
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F_0_899 equ DESCALE( 966342111, 30 - CONST_BITS) ; FIX(0.899976223)
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F_1_175 equ DESCALE(1262586813, 30 - CONST_BITS) ; FIX(1.175875602)
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F_1_501 equ DESCALE(1612031267, 30 - CONST_BITS) ; FIX(1.501321110)
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F_1_847 equ DESCALE(1984016188, 30 - CONST_BITS) ; FIX(1.847759065)
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F_1_961 equ DESCALE(2106220350, 30 - CONST_BITS) ; FIX(1.961570560)
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F_2_053 equ DESCALE(2204520673, 30 - CONST_BITS) ; FIX(2.053119869)
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F_2_562 equ DESCALE(2751909506, 30 - CONST_BITS) ; FIX(2.562915447)
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F_3_072 equ DESCALE(3299298341, 30 - CONST_BITS) ; FIX(3.072711026)
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%endif
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; --------------------------------------------------------------------------
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SECTION SEG_CONST
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alignz 32
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GLOBAL_DATA(jconst_idct_islow_mmx)
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EXTN(jconst_idct_islow_mmx):
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PW_F130_F054 times 2 dw (F_0_541 + F_0_765), F_0_541
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PW_F054_MF130 times 2 dw F_0_541, (F_0_541 - F_1_847)
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PW_MF078_F117 times 2 dw (F_1_175 - F_1_961), F_1_175
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PW_F117_F078 times 2 dw F_1_175, (F_1_175 - F_0_390)
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PW_MF060_MF089 times 2 dw (F_0_298 - F_0_899), -F_0_899
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PW_MF089_F060 times 2 dw -F_0_899, (F_1_501 - F_0_899)
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PW_MF050_MF256 times 2 dw (F_2_053 - F_2_562), -F_2_562
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PW_MF256_F050 times 2 dw -F_2_562, (F_3_072 - F_2_562)
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PD_DESCALE_P1 times 2 dd 1 << (DESCALE_P1 - 1)
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PD_DESCALE_P2 times 2 dd 1 << (DESCALE_P2 - 1)
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PB_CENTERJSAMP times 8 db CENTERJSAMPLE
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alignz 32
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; --------------------------------------------------------------------------
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SECTION SEG_TEXT
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BITS 32
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;
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; Perform dequantization and inverse DCT on one block of coefficients.
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;
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; GLOBAL(void)
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; jsimd_idct_islow_mmx(void *dct_table, JCOEFPTR coef_block,
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; JSAMPARRAY output_buf, JDIMENSION output_col)
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;
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%define dct_table(b) (b) + 8 ; jpeg_component_info *compptr
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%define coef_block(b) (b) + 12 ; JCOEFPTR coef_block
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%define output_buf(b) (b) + 16 ; JSAMPARRAY output_buf
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%define output_col(b) (b) + 20 ; JDIMENSION output_col
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%define original_ebp ebp + 0
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%define wk(i) ebp - (WK_NUM - (i)) * SIZEOF_MMWORD
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; mmword wk[WK_NUM]
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%define WK_NUM 12
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%define workspace wk(0) - DCTSIZE2 * SIZEOF_JCOEF
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; JCOEF workspace[DCTSIZE2]
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align 32
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GLOBAL_FUNCTION(jsimd_idct_islow_mmx)
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EXTN(jsimd_idct_islow_mmx):
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push ebp
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mov eax, esp ; eax = original ebp
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sub esp, byte 4
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and esp, byte (-SIZEOF_MMWORD) ; align to 64 bits
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mov [esp], eax
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mov ebp, esp ; ebp = aligned ebp
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lea esp, [workspace]
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push ebx
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; push ecx ; need not be preserved
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; push edx ; need not be preserved
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push esi
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push edi
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get_GOT ebx ; get GOT address
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; ---- Pass 1: process columns from input, store into work array.
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; mov eax, [original_ebp]
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mov edx, POINTER [dct_table(eax)] ; quantptr
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mov esi, JCOEFPTR [coef_block(eax)] ; inptr
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lea edi, [workspace] ; JCOEF *wsptr
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mov ecx, DCTSIZE/4 ; ctr
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alignx 16, 7
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.columnloop:
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%ifndef NO_ZERO_COLUMN_TEST_ISLOW_MMX
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mov eax, dword [DWBLOCK(1,0,esi,SIZEOF_JCOEF)]
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or eax, dword [DWBLOCK(2,0,esi,SIZEOF_JCOEF)]
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jnz short .columnDCT
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movq mm0, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
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movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
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por mm0, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
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por mm1, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
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por mm0, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
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por mm1, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
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por mm0, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
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por mm1, mm0
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packsswb mm1, mm1
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movd eax, mm1
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test eax, eax
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jnz short .columnDCT
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; -- AC terms all zero
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movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
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pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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psllw mm0, PASS1_BITS
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movq mm2, mm0 ; mm0=in0=(00 01 02 03)
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punpcklwd mm0, mm0 ; mm0=(00 00 01 01)
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punpckhwd mm2, mm2 ; mm2=(02 02 03 03)
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movq mm1, mm0
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punpckldq mm0, mm0 ; mm0=(00 00 00 00)
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punpckhdq mm1, mm1 ; mm1=(01 01 01 01)
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movq mm3, mm2
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punpckldq mm2, mm2 ; mm2=(02 02 02 02)
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punpckhdq mm3, mm3 ; mm3=(03 03 03 03)
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movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm0
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movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0
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movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1
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movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm1
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movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2
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movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm2
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movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm3
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movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm3
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jmp near .nextcolumn
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alignx 16, 7
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%endif
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.columnDCT:
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; -- Even part
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movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
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movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
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pmullw mm0, MMWORD [MMBLOCK(0,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw mm1, MMWORD [MMBLOCK(2,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
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movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
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pmullw mm2, MMWORD [MMBLOCK(4,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw mm3, MMWORD [MMBLOCK(6,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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; (Original)
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; z1 = (z2 + z3) * 0.541196100;
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; tmp2 = z1 + z3 * -1.847759065;
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; tmp3 = z1 + z2 * 0.765366865;
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;
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; (This implementation)
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; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
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; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
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movq mm4, mm1 ; mm1=in2=z2
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movq mm5, mm1
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punpcklwd mm4, mm3 ; mm3=in6=z3
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punpckhwd mm5, mm3
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movq mm1, mm4
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movq mm3, mm5
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pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L
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pmaddwd mm5, [GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H
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pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L
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pmaddwd mm3, [GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H
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movq mm6, mm0
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paddw mm0, mm2 ; mm0=in0+in4
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psubw mm6, mm2 ; mm6=in0-in4
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pxor mm7, mm7
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pxor mm2, mm2
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punpcklwd mm7, mm0 ; mm7=tmp0L
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punpckhwd mm2, mm0 ; mm2=tmp0H
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psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS
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psrad mm2, (16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS
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movq mm0, mm7
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paddd mm7, mm4 ; mm7=tmp10L
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psubd mm0, mm4 ; mm0=tmp13L
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movq mm4, mm2
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paddd mm2, mm5 ; mm2=tmp10H
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psubd mm4, mm5 ; mm4=tmp13H
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movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L
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movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H
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movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L
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movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H
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pxor mm5, mm5
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pxor mm7, mm7
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punpcklwd mm5, mm6 ; mm5=tmp1L
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punpckhwd mm7, mm6 ; mm7=tmp1H
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psrad mm5, (16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS
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psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS
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movq mm2, mm5
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paddd mm5, mm1 ; mm5=tmp11L
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psubd mm2, mm1 ; mm2=tmp12L
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movq mm0, mm7
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paddd mm7, mm3 ; mm7=tmp11H
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psubd mm0, mm3 ; mm0=tmp12H
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movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L
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movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H
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movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L
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movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H
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; -- Odd part
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movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
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movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
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pmullw mm4, MMWORD [MMBLOCK(1,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw mm6, MMWORD [MMBLOCK(3,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
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movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
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pmullw mm1, MMWORD [MMBLOCK(5,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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pmullw mm3, MMWORD [MMBLOCK(7,0,edx,SIZEOF_ISLOW_MULT_TYPE)]
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movq mm5, mm6
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movq mm7, mm4
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paddw mm5, mm3 ; mm5=z3
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paddw mm7, mm1 ; mm7=z4
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; (Original)
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; z5 = (z3 + z4) * 1.175875602;
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; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
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; z3 += z5; z4 += z5;
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;
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; (This implementation)
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; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
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; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
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movq mm2, mm5
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movq mm0, mm5
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punpcklwd mm2, mm7
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punpckhwd mm0, mm7
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movq mm5, mm2
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movq mm7, mm0
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pmaddwd mm2, [GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L
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pmaddwd mm0, [GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H
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pmaddwd mm5, [GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L
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pmaddwd mm7, [GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H
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movq MMWORD [wk(10)], mm2 ; wk(10)=z3L
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movq MMWORD [wk(11)], mm0 ; wk(11)=z3H
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; (Original)
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; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;
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; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;
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; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;
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; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
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; tmp0 += z1 + z3; tmp1 += z2 + z4;
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; tmp2 += z2 + z3; tmp3 += z1 + z4;
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;
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; (This implementation)
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; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
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; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
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; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
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; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
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; tmp0 += z3; tmp1 += z4;
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; tmp2 += z3; tmp3 += z4;
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movq mm2, mm3
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movq mm0, mm3
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punpcklwd mm2, mm4
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punpckhwd mm0, mm4
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movq mm3, mm2
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movq mm4, mm0
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pmaddwd mm2, [GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L
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pmaddwd mm0, [GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H
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pmaddwd mm3, [GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L
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pmaddwd mm4, [GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H
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paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L
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paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H
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paddd mm3, mm5 ; mm3=tmp3L
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paddd mm4, mm7 ; mm4=tmp3H
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movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L
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movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H
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movq mm2, mm1
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movq mm0, mm1
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punpcklwd mm2, mm6
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punpckhwd mm0, mm6
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movq mm1, mm2
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movq mm6, mm0
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pmaddwd mm2, [GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L
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pmaddwd mm0, [GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H
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pmaddwd mm1, [GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L
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pmaddwd mm6, [GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H
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paddd mm2, mm5 ; mm2=tmp1L
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paddd mm0, mm7 ; mm0=tmp1H
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paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L
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paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H
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movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L
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movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H
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; -- Final output stage
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movq mm5, MMWORD [wk(0)] ; mm5=tmp10L
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movq mm7, MMWORD [wk(1)] ; mm7=tmp10H
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movq mm2, mm5
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movq mm0, mm7
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paddd mm5, mm3 ; mm5=data0L
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paddd mm7, mm4 ; mm7=data0H
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psubd mm2, mm3 ; mm2=data7L
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psubd mm0, mm4 ; mm0=data7H
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movq mm3, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm3=[PD_DESCALE_P1]
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paddd mm5, mm3
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paddd mm7, mm3
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psrad mm5, DESCALE_P1
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psrad mm7, DESCALE_P1
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paddd mm2, mm3
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paddd mm0, mm3
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psrad mm2, DESCALE_P1
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psrad mm0, DESCALE_P1
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packssdw mm5, mm7 ; mm5=data0=(00 01 02 03)
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packssdw mm2, mm0 ; mm2=data7=(70 71 72 73)
|
|
|
|
movq mm4, MMWORD [wk(4)] ; mm4=tmp11L
|
|
movq mm3, MMWORD [wk(5)] ; mm3=tmp11H
|
|
|
|
movq mm7, mm4
|
|
movq mm0, mm3
|
|
paddd mm4, mm1 ; mm4=data1L
|
|
paddd mm3, mm6 ; mm3=data1H
|
|
psubd mm7, mm1 ; mm7=data6L
|
|
psubd mm0, mm6 ; mm0=data6H
|
|
|
|
movq mm1, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm1=[PD_DESCALE_P1]
|
|
|
|
paddd mm4, mm1
|
|
paddd mm3, mm1
|
|
psrad mm4, DESCALE_P1
|
|
psrad mm3, DESCALE_P1
|
|
paddd mm7, mm1
|
|
paddd mm0, mm1
|
|
psrad mm7, DESCALE_P1
|
|
psrad mm0, DESCALE_P1
|
|
|
|
packssdw mm4, mm3 ; mm4=data1=(10 11 12 13)
|
|
packssdw mm7, mm0 ; mm7=data6=(60 61 62 63)
|
|
|
|
movq mm6, mm5 ; transpose coefficients(phase 1)
|
|
punpcklwd mm5, mm4 ; mm5=(00 10 01 11)
|
|
punpckhwd mm6, mm4 ; mm6=(02 12 03 13)
|
|
movq mm1, mm7 ; transpose coefficients(phase 1)
|
|
punpcklwd mm7, mm2 ; mm7=(60 70 61 71)
|
|
punpckhwd mm1, mm2 ; mm1=(62 72 63 73)
|
|
|
|
movq mm3, MMWORD [wk(6)] ; mm3=tmp12L
|
|
movq mm0, MMWORD [wk(7)] ; mm0=tmp12H
|
|
movq mm4, MMWORD [wk(10)] ; mm4=tmp1L
|
|
movq mm2, MMWORD [wk(11)] ; mm2=tmp1H
|
|
|
|
movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 01 11)
|
|
movq MMWORD [wk(1)], mm6 ; wk(1)=(02 12 03 13)
|
|
movq MMWORD [wk(4)], mm7 ; wk(4)=(60 70 61 71)
|
|
movq MMWORD [wk(5)], mm1 ; wk(5)=(62 72 63 73)
|
|
|
|
movq mm5, mm3
|
|
movq mm6, mm0
|
|
paddd mm3, mm4 ; mm3=data2L
|
|
paddd mm0, mm2 ; mm0=data2H
|
|
psubd mm5, mm4 ; mm5=data5L
|
|
psubd mm6, mm2 ; mm6=data5H
|
|
|
|
movq mm7, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm7=[PD_DESCALE_P1]
|
|
|
|
paddd mm3, mm7
|
|
paddd mm0, mm7
|
|
psrad mm3, DESCALE_P1
|
|
psrad mm0, DESCALE_P1
|
|
paddd mm5, mm7
|
|
paddd mm6, mm7
|
|
psrad mm5, DESCALE_P1
|
|
psrad mm6, DESCALE_P1
|
|
|
|
packssdw mm3, mm0 ; mm3=data2=(20 21 22 23)
|
|
packssdw mm5, mm6 ; mm5=data5=(50 51 52 53)
|
|
|
|
movq mm1, MMWORD [wk(2)] ; mm1=tmp13L
|
|
movq mm4, MMWORD [wk(3)] ; mm4=tmp13H
|
|
movq mm2, MMWORD [wk(8)] ; mm2=tmp0L
|
|
movq mm7, MMWORD [wk(9)] ; mm7=tmp0H
|
|
|
|
movq mm0, mm1
|
|
movq mm6, mm4
|
|
paddd mm1, mm2 ; mm1=data3L
|
|
paddd mm4, mm7 ; mm4=data3H
|
|
psubd mm0, mm2 ; mm0=data4L
|
|
psubd mm6, mm7 ; mm6=data4H
|
|
|
|
movq mm2, [GOTOFF(ebx,PD_DESCALE_P1)] ; mm2=[PD_DESCALE_P1]
|
|
|
|
paddd mm1, mm2
|
|
paddd mm4, mm2
|
|
psrad mm1, DESCALE_P1
|
|
psrad mm4, DESCALE_P1
|
|
paddd mm0, mm2
|
|
paddd mm6, mm2
|
|
psrad mm0, DESCALE_P1
|
|
psrad mm6, DESCALE_P1
|
|
|
|
packssdw mm1, mm4 ; mm1=data3=(30 31 32 33)
|
|
packssdw mm0, mm6 ; mm0=data4=(40 41 42 43)
|
|
|
|
movq mm7, MMWORD [wk(0)] ; mm7=(00 10 01 11)
|
|
movq mm2, MMWORD [wk(1)] ; mm2=(02 12 03 13)
|
|
|
|
movq mm4, mm3 ; transpose coefficients(phase 1)
|
|
punpcklwd mm3, mm1 ; mm3=(20 30 21 31)
|
|
punpckhwd mm4, mm1 ; mm4=(22 32 23 33)
|
|
movq mm6, mm0 ; transpose coefficients(phase 1)
|
|
punpcklwd mm0, mm5 ; mm0=(40 50 41 51)
|
|
punpckhwd mm6, mm5 ; mm6=(42 52 43 53)
|
|
|
|
movq mm1, mm7 ; transpose coefficients(phase 2)
|
|
punpckldq mm7, mm3 ; mm7=(00 10 20 30)
|
|
punpckhdq mm1, mm3 ; mm1=(01 11 21 31)
|
|
movq mm5, mm2 ; transpose coefficients(phase 2)
|
|
punpckldq mm2, mm4 ; mm2=(02 12 22 32)
|
|
punpckhdq mm5, mm4 ; mm5=(03 13 23 33)
|
|
|
|
movq mm3, MMWORD [wk(4)] ; mm3=(60 70 61 71)
|
|
movq mm4, MMWORD [wk(5)] ; mm4=(62 72 63 73)
|
|
|
|
movq MMWORD [MMBLOCK(0,0,edi,SIZEOF_JCOEF)], mm7
|
|
movq MMWORD [MMBLOCK(1,0,edi,SIZEOF_JCOEF)], mm1
|
|
movq MMWORD [MMBLOCK(2,0,edi,SIZEOF_JCOEF)], mm2
|
|
movq MMWORD [MMBLOCK(3,0,edi,SIZEOF_JCOEF)], mm5
|
|
|
|
movq mm7, mm0 ; transpose coefficients(phase 2)
|
|
punpckldq mm0, mm3 ; mm0=(40 50 60 70)
|
|
punpckhdq mm7, mm3 ; mm7=(41 51 61 71)
|
|
movq mm1, mm6 ; transpose coefficients(phase 2)
|
|
punpckldq mm6, mm4 ; mm6=(42 52 62 72)
|
|
punpckhdq mm1, mm4 ; mm1=(43 53 63 73)
|
|
|
|
movq MMWORD [MMBLOCK(0,1,edi,SIZEOF_JCOEF)], mm0
|
|
movq MMWORD [MMBLOCK(1,1,edi,SIZEOF_JCOEF)], mm7
|
|
movq MMWORD [MMBLOCK(2,1,edi,SIZEOF_JCOEF)], mm6
|
|
movq MMWORD [MMBLOCK(3,1,edi,SIZEOF_JCOEF)], mm1
|
|
|
|
.nextcolumn:
|
|
add esi, byte 4*SIZEOF_JCOEF ; coef_block
|
|
add edx, byte 4*SIZEOF_ISLOW_MULT_TYPE ; quantptr
|
|
add edi, byte 4*DCTSIZE*SIZEOF_JCOEF ; wsptr
|
|
dec ecx ; ctr
|
|
jnz near .columnloop
|
|
|
|
; ---- Pass 2: process rows from work array, store into output array.
|
|
|
|
mov eax, [original_ebp]
|
|
lea esi, [workspace] ; JCOEF *wsptr
|
|
mov edi, JSAMPARRAY [output_buf(eax)] ; (JSAMPROW *)
|
|
mov eax, JDIMENSION [output_col(eax)]
|
|
mov ecx, DCTSIZE/4 ; ctr
|
|
alignx 16, 7
|
|
.rowloop:
|
|
|
|
; -- Even part
|
|
|
|
movq mm0, MMWORD [MMBLOCK(0,0,esi,SIZEOF_JCOEF)]
|
|
movq mm1, MMWORD [MMBLOCK(2,0,esi,SIZEOF_JCOEF)]
|
|
movq mm2, MMWORD [MMBLOCK(4,0,esi,SIZEOF_JCOEF)]
|
|
movq mm3, MMWORD [MMBLOCK(6,0,esi,SIZEOF_JCOEF)]
|
|
|
|
; (Original)
|
|
; z1 = (z2 + z3) * 0.541196100;
|
|
; tmp2 = z1 + z3 * -1.847759065;
|
|
; tmp3 = z1 + z2 * 0.765366865;
|
|
;
|
|
; (This implementation)
|
|
; tmp2 = z2 * 0.541196100 + z3 * (0.541196100 - 1.847759065);
|
|
; tmp3 = z2 * (0.541196100 + 0.765366865) + z3 * 0.541196100;
|
|
|
|
movq mm4, mm1 ; mm1=in2=z2
|
|
movq mm5, mm1
|
|
punpcklwd mm4, mm3 ; mm3=in6=z3
|
|
punpckhwd mm5, mm3
|
|
movq mm1, mm4
|
|
movq mm3, mm5
|
|
pmaddwd mm4, [GOTOFF(ebx,PW_F130_F054)] ; mm4=tmp3L
|
|
pmaddwd mm5, [GOTOFF(ebx,PW_F130_F054)] ; mm5=tmp3H
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_F054_MF130)] ; mm1=tmp2L
|
|
pmaddwd mm3, [GOTOFF(ebx,PW_F054_MF130)] ; mm3=tmp2H
|
|
|
|
movq mm6, mm0
|
|
paddw mm0, mm2 ; mm0=in0+in4
|
|
psubw mm6, mm2 ; mm6=in0-in4
|
|
|
|
pxor mm7, mm7
|
|
pxor mm2, mm2
|
|
punpcklwd mm7, mm0 ; mm7=tmp0L
|
|
punpckhwd mm2, mm0 ; mm2=tmp0H
|
|
psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS
|
|
psrad mm2, (16-CONST_BITS) ; psrad mm2,16 & pslld mm2,CONST_BITS
|
|
|
|
movq mm0, mm7
|
|
paddd mm7, mm4 ; mm7=tmp10L
|
|
psubd mm0, mm4 ; mm0=tmp13L
|
|
movq mm4, mm2
|
|
paddd mm2, mm5 ; mm2=tmp10H
|
|
psubd mm4, mm5 ; mm4=tmp13H
|
|
|
|
movq MMWORD [wk(0)], mm7 ; wk(0)=tmp10L
|
|
movq MMWORD [wk(1)], mm2 ; wk(1)=tmp10H
|
|
movq MMWORD [wk(2)], mm0 ; wk(2)=tmp13L
|
|
movq MMWORD [wk(3)], mm4 ; wk(3)=tmp13H
|
|
|
|
pxor mm5, mm5
|
|
pxor mm7, mm7
|
|
punpcklwd mm5, mm6 ; mm5=tmp1L
|
|
punpckhwd mm7, mm6 ; mm7=tmp1H
|
|
psrad mm5, (16-CONST_BITS) ; psrad mm5,16 & pslld mm5,CONST_BITS
|
|
psrad mm7, (16-CONST_BITS) ; psrad mm7,16 & pslld mm7,CONST_BITS
|
|
|
|
movq mm2, mm5
|
|
paddd mm5, mm1 ; mm5=tmp11L
|
|
psubd mm2, mm1 ; mm2=tmp12L
|
|
movq mm0, mm7
|
|
paddd mm7, mm3 ; mm7=tmp11H
|
|
psubd mm0, mm3 ; mm0=tmp12H
|
|
|
|
movq MMWORD [wk(4)], mm5 ; wk(4)=tmp11L
|
|
movq MMWORD [wk(5)], mm7 ; wk(5)=tmp11H
|
|
movq MMWORD [wk(6)], mm2 ; wk(6)=tmp12L
|
|
movq MMWORD [wk(7)], mm0 ; wk(7)=tmp12H
|
|
|
|
; -- Odd part
|
|
|
|
movq mm4, MMWORD [MMBLOCK(1,0,esi,SIZEOF_JCOEF)]
|
|
movq mm6, MMWORD [MMBLOCK(3,0,esi,SIZEOF_JCOEF)]
|
|
movq mm1, MMWORD [MMBLOCK(5,0,esi,SIZEOF_JCOEF)]
|
|
movq mm3, MMWORD [MMBLOCK(7,0,esi,SIZEOF_JCOEF)]
|
|
|
|
movq mm5, mm6
|
|
movq mm7, mm4
|
|
paddw mm5, mm3 ; mm5=z3
|
|
paddw mm7, mm1 ; mm7=z4
|
|
|
|
; (Original)
|
|
; z5 = (z3 + z4) * 1.175875602;
|
|
; z3 = z3 * -1.961570560; z4 = z4 * -0.390180644;
|
|
; z3 += z5; z4 += z5;
|
|
;
|
|
; (This implementation)
|
|
; z3 = z3 * (1.175875602 - 1.961570560) + z4 * 1.175875602;
|
|
; z4 = z3 * 1.175875602 + z4 * (1.175875602 - 0.390180644);
|
|
|
|
movq mm2, mm5
|
|
movq mm0, mm5
|
|
punpcklwd mm2, mm7
|
|
punpckhwd mm0, mm7
|
|
movq mm5, mm2
|
|
movq mm7, mm0
|
|
pmaddwd mm2, [GOTOFF(ebx,PW_MF078_F117)] ; mm2=z3L
|
|
pmaddwd mm0, [GOTOFF(ebx,PW_MF078_F117)] ; mm0=z3H
|
|
pmaddwd mm5, [GOTOFF(ebx,PW_F117_F078)] ; mm5=z4L
|
|
pmaddwd mm7, [GOTOFF(ebx,PW_F117_F078)] ; mm7=z4H
|
|
|
|
movq MMWORD [wk(10)], mm2 ; wk(10)=z3L
|
|
movq MMWORD [wk(11)], mm0 ; wk(11)=z3H
|
|
|
|
; (Original)
|
|
; z1 = tmp0 + tmp3; z2 = tmp1 + tmp2;
|
|
; tmp0 = tmp0 * 0.298631336; tmp1 = tmp1 * 2.053119869;
|
|
; tmp2 = tmp2 * 3.072711026; tmp3 = tmp3 * 1.501321110;
|
|
; z1 = z1 * -0.899976223; z2 = z2 * -2.562915447;
|
|
; tmp0 += z1 + z3; tmp1 += z2 + z4;
|
|
; tmp2 += z2 + z3; tmp3 += z1 + z4;
|
|
;
|
|
; (This implementation)
|
|
; tmp0 = tmp0 * (0.298631336 - 0.899976223) + tmp3 * -0.899976223;
|
|
; tmp1 = tmp1 * (2.053119869 - 2.562915447) + tmp2 * -2.562915447;
|
|
; tmp2 = tmp1 * -2.562915447 + tmp2 * (3.072711026 - 2.562915447);
|
|
; tmp3 = tmp0 * -0.899976223 + tmp3 * (1.501321110 - 0.899976223);
|
|
; tmp0 += z3; tmp1 += z4;
|
|
; tmp2 += z3; tmp3 += z4;
|
|
|
|
movq mm2, mm3
|
|
movq mm0, mm3
|
|
punpcklwd mm2, mm4
|
|
punpckhwd mm0, mm4
|
|
movq mm3, mm2
|
|
movq mm4, mm0
|
|
pmaddwd mm2, [GOTOFF(ebx,PW_MF060_MF089)] ; mm2=tmp0L
|
|
pmaddwd mm0, [GOTOFF(ebx,PW_MF060_MF089)] ; mm0=tmp0H
|
|
pmaddwd mm3, [GOTOFF(ebx,PW_MF089_F060)] ; mm3=tmp3L
|
|
pmaddwd mm4, [GOTOFF(ebx,PW_MF089_F060)] ; mm4=tmp3H
|
|
|
|
paddd mm2, MMWORD [wk(10)] ; mm2=tmp0L
|
|
paddd mm0, MMWORD [wk(11)] ; mm0=tmp0H
|
|
paddd mm3, mm5 ; mm3=tmp3L
|
|
paddd mm4, mm7 ; mm4=tmp3H
|
|
|
|
movq MMWORD [wk(8)], mm2 ; wk(8)=tmp0L
|
|
movq MMWORD [wk(9)], mm0 ; wk(9)=tmp0H
|
|
|
|
movq mm2, mm1
|
|
movq mm0, mm1
|
|
punpcklwd mm2, mm6
|
|
punpckhwd mm0, mm6
|
|
movq mm1, mm2
|
|
movq mm6, mm0
|
|
pmaddwd mm2, [GOTOFF(ebx,PW_MF050_MF256)] ; mm2=tmp1L
|
|
pmaddwd mm0, [GOTOFF(ebx,PW_MF050_MF256)] ; mm0=tmp1H
|
|
pmaddwd mm1, [GOTOFF(ebx,PW_MF256_F050)] ; mm1=tmp2L
|
|
pmaddwd mm6, [GOTOFF(ebx,PW_MF256_F050)] ; mm6=tmp2H
|
|
|
|
paddd mm2, mm5 ; mm2=tmp1L
|
|
paddd mm0, mm7 ; mm0=tmp1H
|
|
paddd mm1, MMWORD [wk(10)] ; mm1=tmp2L
|
|
paddd mm6, MMWORD [wk(11)] ; mm6=tmp2H
|
|
|
|
movq MMWORD [wk(10)], mm2 ; wk(10)=tmp1L
|
|
movq MMWORD [wk(11)], mm0 ; wk(11)=tmp1H
|
|
|
|
; -- Final output stage
|
|
|
|
movq mm5, MMWORD [wk(0)] ; mm5=tmp10L
|
|
movq mm7, MMWORD [wk(1)] ; mm7=tmp10H
|
|
|
|
movq mm2, mm5
|
|
movq mm0, mm7
|
|
paddd mm5, mm3 ; mm5=data0L
|
|
paddd mm7, mm4 ; mm7=data0H
|
|
psubd mm2, mm3 ; mm2=data7L
|
|
psubd mm0, mm4 ; mm0=data7H
|
|
|
|
movq mm3, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm3=[PD_DESCALE_P2]
|
|
|
|
paddd mm5, mm3
|
|
paddd mm7, mm3
|
|
psrad mm5, DESCALE_P2
|
|
psrad mm7, DESCALE_P2
|
|
paddd mm2, mm3
|
|
paddd mm0, mm3
|
|
psrad mm2, DESCALE_P2
|
|
psrad mm0, DESCALE_P2
|
|
|
|
packssdw mm5, mm7 ; mm5=data0=(00 10 20 30)
|
|
packssdw mm2, mm0 ; mm2=data7=(07 17 27 37)
|
|
|
|
movq mm4, MMWORD [wk(4)] ; mm4=tmp11L
|
|
movq mm3, MMWORD [wk(5)] ; mm3=tmp11H
|
|
|
|
movq mm7, mm4
|
|
movq mm0, mm3
|
|
paddd mm4, mm1 ; mm4=data1L
|
|
paddd mm3, mm6 ; mm3=data1H
|
|
psubd mm7, mm1 ; mm7=data6L
|
|
psubd mm0, mm6 ; mm0=data6H
|
|
|
|
movq mm1, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm1=[PD_DESCALE_P2]
|
|
|
|
paddd mm4, mm1
|
|
paddd mm3, mm1
|
|
psrad mm4, DESCALE_P2
|
|
psrad mm3, DESCALE_P2
|
|
paddd mm7, mm1
|
|
paddd mm0, mm1
|
|
psrad mm7, DESCALE_P2
|
|
psrad mm0, DESCALE_P2
|
|
|
|
packssdw mm4, mm3 ; mm4=data1=(01 11 21 31)
|
|
packssdw mm7, mm0 ; mm7=data6=(06 16 26 36)
|
|
|
|
packsswb mm5, mm7 ; mm5=(00 10 20 30 06 16 26 36)
|
|
packsswb mm4, mm2 ; mm4=(01 11 21 31 07 17 27 37)
|
|
|
|
movq mm6, MMWORD [wk(6)] ; mm6=tmp12L
|
|
movq mm1, MMWORD [wk(7)] ; mm1=tmp12H
|
|
movq mm3, MMWORD [wk(10)] ; mm3=tmp1L
|
|
movq mm0, MMWORD [wk(11)] ; mm0=tmp1H
|
|
|
|
movq MMWORD [wk(0)], mm5 ; wk(0)=(00 10 20 30 06 16 26 36)
|
|
movq MMWORD [wk(1)], mm4 ; wk(1)=(01 11 21 31 07 17 27 37)
|
|
|
|
movq mm7, mm6
|
|
movq mm2, mm1
|
|
paddd mm6, mm3 ; mm6=data2L
|
|
paddd mm1, mm0 ; mm1=data2H
|
|
psubd mm7, mm3 ; mm7=data5L
|
|
psubd mm2, mm0 ; mm2=data5H
|
|
|
|
movq mm5, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm5=[PD_DESCALE_P2]
|
|
|
|
paddd mm6, mm5
|
|
paddd mm1, mm5
|
|
psrad mm6, DESCALE_P2
|
|
psrad mm1, DESCALE_P2
|
|
paddd mm7, mm5
|
|
paddd mm2, mm5
|
|
psrad mm7, DESCALE_P2
|
|
psrad mm2, DESCALE_P2
|
|
|
|
packssdw mm6, mm1 ; mm6=data2=(02 12 22 32)
|
|
packssdw mm7, mm2 ; mm7=data5=(05 15 25 35)
|
|
|
|
movq mm4, MMWORD [wk(2)] ; mm4=tmp13L
|
|
movq mm3, MMWORD [wk(3)] ; mm3=tmp13H
|
|
movq mm0, MMWORD [wk(8)] ; mm0=tmp0L
|
|
movq mm5, MMWORD [wk(9)] ; mm5=tmp0H
|
|
|
|
movq mm1, mm4
|
|
movq mm2, mm3
|
|
paddd mm4, mm0 ; mm4=data3L
|
|
paddd mm3, mm5 ; mm3=data3H
|
|
psubd mm1, mm0 ; mm1=data4L
|
|
psubd mm2, mm5 ; mm2=data4H
|
|
|
|
movq mm0, [GOTOFF(ebx,PD_DESCALE_P2)] ; mm0=[PD_DESCALE_P2]
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paddd mm4, mm0
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paddd mm3, mm0
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psrad mm4, DESCALE_P2
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psrad mm3, DESCALE_P2
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paddd mm1, mm0
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paddd mm2, mm0
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psrad mm1, DESCALE_P2
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psrad mm2, DESCALE_P2
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movq mm5, [GOTOFF(ebx,PB_CENTERJSAMP)] ; mm5=[PB_CENTERJSAMP]
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packssdw mm4, mm3 ; mm4=data3=(03 13 23 33)
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packssdw mm1, mm2 ; mm1=data4=(04 14 24 34)
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movq mm0, MMWORD [wk(0)] ; mm0=(00 10 20 30 06 16 26 36)
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movq mm3, MMWORD [wk(1)] ; mm3=(01 11 21 31 07 17 27 37)
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|
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packsswb mm6, mm1 ; mm6=(02 12 22 32 04 14 24 34)
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|
packsswb mm4, mm7 ; mm4=(03 13 23 33 05 15 25 35)
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|
|
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paddb mm0, mm5
|
|
paddb mm3, mm5
|
|
paddb mm6, mm5
|
|
paddb mm4, mm5
|
|
|
|
movq mm2, mm0 ; transpose coefficients(phase 1)
|
|
punpcklbw mm0, mm3 ; mm0=(00 01 10 11 20 21 30 31)
|
|
punpckhbw mm2, mm3 ; mm2=(06 07 16 17 26 27 36 37)
|
|
movq mm1, mm6 ; transpose coefficients(phase 1)
|
|
punpcklbw mm6, mm4 ; mm6=(02 03 12 13 22 23 32 33)
|
|
punpckhbw mm1, mm4 ; mm1=(04 05 14 15 24 25 34 35)
|
|
|
|
movq mm7, mm0 ; transpose coefficients(phase 2)
|
|
punpcklwd mm0, mm6 ; mm0=(00 01 02 03 10 11 12 13)
|
|
punpckhwd mm7, mm6 ; mm7=(20 21 22 23 30 31 32 33)
|
|
movq mm5, mm1 ; transpose coefficients(phase 2)
|
|
punpcklwd mm1, mm2 ; mm1=(04 05 06 07 14 15 16 17)
|
|
punpckhwd mm5, mm2 ; mm5=(24 25 26 27 34 35 36 37)
|
|
|
|
movq mm3, mm0 ; transpose coefficients(phase 3)
|
|
punpckldq mm0, mm1 ; mm0=(00 01 02 03 04 05 06 07)
|
|
punpckhdq mm3, mm1 ; mm3=(10 11 12 13 14 15 16 17)
|
|
movq mm4, mm7 ; transpose coefficients(phase 3)
|
|
punpckldq mm7, mm5 ; mm7=(20 21 22 23 24 25 26 27)
|
|
punpckhdq mm4, mm5 ; mm4=(30 31 32 33 34 35 36 37)
|
|
|
|
pushpic ebx ; save GOT address
|
|
|
|
mov edx, JSAMPROW [edi+0*SIZEOF_JSAMPROW]
|
|
mov ebx, JSAMPROW [edi+1*SIZEOF_JSAMPROW]
|
|
movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm0
|
|
movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm3
|
|
mov edx, JSAMPROW [edi+2*SIZEOF_JSAMPROW]
|
|
mov ebx, JSAMPROW [edi+3*SIZEOF_JSAMPROW]
|
|
movq MMWORD [edx+eax*SIZEOF_JSAMPLE], mm7
|
|
movq MMWORD [ebx+eax*SIZEOF_JSAMPLE], mm4
|
|
|
|
poppic ebx ; restore GOT address
|
|
|
|
add esi, byte 4*SIZEOF_JCOEF ; wsptr
|
|
add edi, byte 4*SIZEOF_JSAMPROW
|
|
dec ecx ; ctr
|
|
jnz near .rowloop
|
|
|
|
emms ; empty MMX state
|
|
|
|
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
|
|
|
|
; For some reason, the OS X linker does not honor the request to align the
|
|
; segment unless we do this.
|
|
align 32
|