Adds libjpeg-turbo to deps...

third_party/libjpeg_turbo/simd/jcqnts2i.asm

+;
+; jcqnts2i.asm - sample data conversion and quantization (SSE2)
+;
+; Copyright 2009 Pierre Ossman <ossman@cendio.se> for Cendio AB
+;
+; 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
+;
+; [TAB8]
+
+%include "jsimdext.inc"
+%include "jdct.inc"
+
+; --------------------------------------------------------------------------
+        SECTION SEG_TEXT
+        BITS    32
+;
+; Load data into workspace, applying unsigned->signed conversion
+;
+; GLOBAL(void)
+; jsimd_convsamp_sse2 (JSAMPARRAY sample_data, JDIMENSION start_col,
+;                      DCTELEM * workspace);
+;
+
+%define sample_data     ebp+8           ; JSAMPARRAY sample_data
+%define start_col       ebp+12          ; JDIMENSION start_col
+%define workspace       ebp+16          ; DCTELEM * workspace
+
+        align   16
+        global  EXTN(jsimd_convsamp_sse2)
+
+EXTN(jsimd_convsamp_sse2):
+        push    ebp
+        mov     ebp,esp
+        push    ebx
+;       push    ecx             ; need not be preserved
+;       push    edx             ; need not be preserved
+        push    esi
+        push    edi
+
+        pxor    xmm6,xmm6               ; xmm6=(all 0's)
+        pcmpeqw xmm7,xmm7
+        psllw   xmm7,7                  ; xmm7={0xFF80 0xFF80 0xFF80 0xFF80 ..}
+
+        mov     esi, JSAMPARRAY [sample_data]   ; (JSAMPROW *)
+        mov     eax, JDIMENSION [start_col]
+        mov     edi, POINTER [workspace]        ; (DCTELEM *)
+        mov     ecx, DCTSIZE/4
+        alignx  16,7
+.convloop:
+        mov     ebx, JSAMPROW [esi+0*SIZEOF_JSAMPROW]   ; (JSAMPLE *)
+        mov     edx, JSAMPROW [esi+1*SIZEOF_JSAMPROW]   ; (JSAMPLE *)
+
+        movq    xmm0, XMM_MMWORD [ebx+eax*SIZEOF_JSAMPLE]       ; xmm0=(01234567)
+        movq    xmm1, XMM_MMWORD [edx+eax*SIZEOF_JSAMPLE]       ; xmm1=(89ABCDEF)
+
+        mov     ebx, JSAMPROW [esi+2*SIZEOF_JSAMPROW]   ; (JSAMPLE *)
+        mov     edx, JSAMPROW [esi+3*SIZEOF_JSAMPROW]   ; (JSAMPLE *)
+
+        movq    xmm2, XMM_MMWORD [ebx+eax*SIZEOF_JSAMPLE]       ; xmm2=(GHIJKLMN)
+        movq    xmm3, XMM_MMWORD [edx+eax*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,edi,SIZEOF_DCTELEM)], xmm0
+        movdqa  XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_DCTELEM)], xmm1
+        movdqa  XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_DCTELEM)], xmm2
+        movdqa  XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_DCTELEM)], xmm3
+
+        add     esi, byte 4*SIZEOF_JSAMPROW
+        add     edi, byte 4*DCTSIZE*SIZEOF_DCTELEM
+        dec     ecx
+        jnz     short .convloop
+
+        pop     edi
+        pop     esi
+;       pop     edx             ; need not be preserved
+;       pop     ecx             ; need not be preserved
+        pop     ebx
+        pop     ebp
+        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)
+
+%define coef_block      ebp+8           ; JCOEFPTR coef_block
+%define divisors        ebp+12          ; DCTELEM * divisors
+%define workspace       ebp+16          ; DCTELEM * workspace
+
+        align   16
+        global  EXTN(jsimd_quantize_sse2)
+
+EXTN(jsimd_quantize_sse2):
+        push    ebp
+        mov     ebp,esp
+;       push    ebx             ; unused
+;       push    ecx             ; unused
+;       push    edx             ; need not be preserved
+        push    esi
+        push    edi
+
+        mov     esi, POINTER [workspace]
+        mov     edx, POINTER [divisors]
+        mov     edi, JCOEFPTR [coef_block]
+        mov     eax, DCTSIZE2/32
+        alignx  16,7
+.quantloop:
+        movdqa  xmm4, XMMWORD [XMMBLOCK(0,0,esi,SIZEOF_DCTELEM)]
+        movdqa  xmm5, XMMWORD [XMMBLOCK(1,0,esi,SIZEOF_DCTELEM)]
+        movdqa  xmm6, XMMWORD [XMMBLOCK(2,0,esi,SIZEOF_DCTELEM)]
+        movdqa  xmm7, XMMWORD [XMMBLOCK(3,0,esi,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,edx)]  ; correction + roundfactor
+        paddw   xmm1, XMMWORD [CORRECTION(1,0,edx)]
+        paddw   xmm2, XMMWORD [CORRECTION(2,0,edx)]
+        paddw   xmm3, XMMWORD [CORRECTION(3,0,edx)]
+        pmulhuw xmm0, XMMWORD [RECIPROCAL(0,0,edx)]  ; reciprocal
+        pmulhuw xmm1, XMMWORD [RECIPROCAL(1,0,edx)]
+        pmulhuw xmm2, XMMWORD [RECIPROCAL(2,0,edx)]
+        pmulhuw xmm3, XMMWORD [RECIPROCAL(3,0,edx)]
+        pmulhuw xmm0, XMMWORD [SCALE(0,0,edx)]  ; scale
+        pmulhuw xmm1, XMMWORD [SCALE(1,0,edx)]
+        pmulhuw xmm2, XMMWORD [SCALE(2,0,edx)]
+        pmulhuw xmm3, XMMWORD [SCALE(3,0,edx)]
+
+        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,edi,SIZEOF_DCTELEM)], xmm0
+        movdqa  XMMWORD [XMMBLOCK(1,0,edi,SIZEOF_DCTELEM)], xmm1
+        movdqa  XMMWORD [XMMBLOCK(2,0,edi,SIZEOF_DCTELEM)], xmm2
+        movdqa  XMMWORD [XMMBLOCK(3,0,edi,SIZEOF_DCTELEM)], xmm3
+
+        add     esi, byte 32*SIZEOF_DCTELEM
+        add     edx, byte 32*SIZEOF_DCTELEM
+        add     edi, byte 32*SIZEOF_JCOEF
+        dec     eax
+        jnz     near .quantloop
+
+        pop     edi
+        pop     esi
+;       pop     edx             ; need not be preserved
+;       pop     ecx             ; unused
+;       pop     ebx             ; unused
+        pop     ebp
+        ret
+
+; For some reason, the OS X linker does not honor the request to align the
+; segment unless we do this.
+        align   16