Adds libjpeg-turbo to deps...

third_party/libjpeg_turbo/simd/jcsamss2.asm

+;
+; jcsamss2.asm - downsampling (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"
+
+; --------------------------------------------------------------------------
+        SECTION SEG_TEXT
+        BITS    32
+;
+; Downsample pixel values of a single component.
+; This version handles the common case of 2:1 horizontal and 1:1 vertical,
+; without smoothing.
+;
+; GLOBAL(void)
+; jsimd_h2v1_downsample_sse2 (JDIMENSION image_width, int max_v_samp_factor,
+;                             JDIMENSION v_samp_factor, JDIMENSION width_blocks,
+;                             JSAMPARRAY input_data, JSAMPARRAY output_data);
+;
+
+%define img_width(b)    (b)+8                   ; JDIMENSION image_width
+%define max_v_samp(b)   (b)+12          ; int max_v_samp_factor
+%define v_samp(b)                       (b)+16          ; JDIMENSION v_samp_factor
+%define width_blks(b)   (b)+20          ; JDIMENSION width_blocks
+%define input_data(b)   (b)+24          ; JSAMPARRAY input_data
+%define output_data(b)  (b)+28          ; JSAMPARRAY output_data
+
+        align   16
+        global  EXTN(jsimd_h2v1_downsample_sse2)
+
+EXTN(jsimd_h2v1_downsample_sse2):
+        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     ecx, JDIMENSION [width_blks(ebp)]
+        shl     ecx,3                   ; imul ecx,DCTSIZE (ecx = output_cols)
+        jz      near .return
+
+        mov     edx, JDIMENSION [img_width(ebp)]
+
+        ; -- expand_right_edge
+
+        push    ecx
+        shl     ecx,1                           ; output_cols * 2
+        sub     ecx,edx
+        jle     short .expand_end
+
+        mov     eax, INT [max_v_samp(ebp)]
+        test    eax,eax
+        jle     short .expand_end
+
+        cld
+        mov     esi, JSAMPARRAY [input_data(ebp)]       ; input_data
+        alignx  16,7
+.expandloop:
+        push    eax
+        push    ecx
+
+        mov     edi, JSAMPROW [esi]
+        add     edi,edx
+        mov     al, JSAMPLE [edi-1]
+
+        rep stosb
+
+        pop     ecx
+        pop     eax
+
+        add     esi, byte SIZEOF_JSAMPROW
+        dec     eax
+        jg      short .expandloop
+
+.expand_end:
+        pop     ecx                             ; output_cols
+
+        ; -- h2v1_downsample
+
+        mov     eax, JDIMENSION [v_samp(ebp)]   ; rowctr
+        test    eax,eax
+        jle     near .return
+
+        mov     edx, 0x00010000         ; bias pattern
+        movd    xmm7,edx
+        pcmpeqw xmm6,xmm6
+        pshufd  xmm7,xmm7,0x00          ; xmm7={0, 1, 0, 1, 0, 1, 0, 1}
+        psrlw   xmm6,BYTE_BIT           ; xmm6={0xFF 0x00 0xFF 0x00 ..}
+
+        mov     esi, JSAMPARRAY [input_data(ebp)]       ; input_data
+        mov     edi, JSAMPARRAY [output_data(ebp)]      ; output_data
+        alignx  16,7
+.rowloop:
+        push    ecx
+        push    edi
+        push    esi
+
+        mov     esi, JSAMPROW [esi]             ; inptr
+        mov     edi, JSAMPROW [edi]             ; outptr
+
+        cmp     ecx, byte SIZEOF_XMMWORD
+        jae     short .columnloop
+        alignx  16,7
+
+.columnloop_r8:
+        movdqa  xmm0, XMMWORD [esi+0*SIZEOF_XMMWORD]
+        pxor    xmm1,xmm1
+        mov     ecx, SIZEOF_XMMWORD
+        jmp     short .downsample
+        alignx  16,7
+
+.columnloop:
+        movdqa  xmm0, XMMWORD [esi+0*SIZEOF_XMMWORD]
+        movdqa  xmm1, XMMWORD [esi+1*SIZEOF_XMMWORD]
+
+.downsample:
+        movdqa  xmm2,xmm0
+        movdqa  xmm3,xmm1
+
+        pand    xmm0,xmm6
+        psrlw   xmm2,BYTE_BIT
+        pand    xmm1,xmm6
+        psrlw   xmm3,BYTE_BIT
+
+        paddw   xmm0,xmm2
+        paddw   xmm1,xmm3
+        paddw   xmm0,xmm7
+        paddw   xmm1,xmm7
+        psrlw   xmm0,1
+        psrlw   xmm1,1
+
+        packuswb xmm0,xmm1
+
+        movdqa  XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0
+
+        sub     ecx, byte SIZEOF_XMMWORD        ; outcol
+        add     esi, byte 2*SIZEOF_XMMWORD      ; inptr
+        add     edi, byte 1*SIZEOF_XMMWORD      ; outptr
+        cmp     ecx, byte SIZEOF_XMMWORD
+        jae     short .columnloop
+        test    ecx,ecx
+        jnz     short .columnloop_r8
+
+        pop     esi
+        pop     edi
+        pop     ecx
+
+        add     esi, byte SIZEOF_JSAMPROW       ; input_data
+        add     edi, byte SIZEOF_JSAMPROW       ; output_data
+        dec     eax                             ; rowctr
+        jg      near .rowloop
+
+.return:
+        pop     edi
+        pop     esi
+;       pop     edx             ; need not be preserved
+;       pop     ecx             ; need not be preserved
+;       pop     ebx             ; unused
+        pop     ebp
+        ret
+
+; --------------------------------------------------------------------------
+;
+; Downsample pixel values of a single component.
+; This version handles the standard case of 2:1 horizontal and 2:1 vertical,
+; without smoothing.
+;
+; GLOBAL(void)
+; jsimd_h2v2_downsample_sse2 (JDIMENSION image_width, int max_v_samp_factor,
+;                             JDIMENSION v_samp_factor, JDIMENSION width_blocks,
+;                             JSAMPARRAY input_data, JSAMPARRAY output_data);
+;
+
+%define img_width(b)    (b)+8                   ; JDIMENSION image_width
+%define max_v_samp(b)   (b)+12          ; int max_v_samp_factor
+%define v_samp(b)                       (b)+16          ; JDIMENSION v_samp_factor
+%define width_blks(b)   (b)+20          ; JDIMENSION width_blocks
+%define input_data(b)   (b)+24          ; JSAMPARRAY input_data
+%define output_data(b)  (b)+28  ; JSAMPARRAY output_data
+
+        align   16
+        global  EXTN(jsimd_h2v2_downsample_sse2)
+
+EXTN(jsimd_h2v2_downsample_sse2):
+        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     ecx, JDIMENSION [width_blks(ebp)]
+        shl     ecx,3                   ; imul ecx,DCTSIZE (ecx = output_cols)
+        jz      near .return
+
+        mov     edx, JDIMENSION [img_width(ebp)]
+
+        ; -- expand_right_edge
+
+        push    ecx
+        shl     ecx,1                           ; output_cols * 2
+        sub     ecx,edx
+        jle     short .expand_end
+
+        mov     eax, INT [max_v_samp(ebp)]
+        test    eax,eax
+        jle     short .expand_end
+
+        cld
+        mov     esi, JSAMPARRAY [input_data(ebp)]       ; input_data
+        alignx  16,7
+.expandloop:
+        push    eax
+        push    ecx
+
+        mov     edi, JSAMPROW [esi]
+        add     edi,edx
+        mov     al, JSAMPLE [edi-1]
+
+        rep stosb
+
+        pop     ecx
+        pop     eax
+
+        add     esi, byte SIZEOF_JSAMPROW
+        dec     eax
+        jg      short .expandloop
+
+.expand_end:
+        pop     ecx                             ; output_cols
+
+        ; -- h2v2_downsample
+
+        mov     eax, JDIMENSION [v_samp(ebp)]   ; rowctr
+        test    eax,eax
+        jle     near .return
+
+        mov     edx, 0x00020001         ; bias pattern
+        movd    xmm7,edx
+        pcmpeqw xmm6,xmm6
+        pshufd  xmm7,xmm7,0x00          ; xmm7={1, 2, 1, 2, 1, 2, 1, 2}
+        psrlw   xmm6,BYTE_BIT           ; xmm6={0xFF 0x00 0xFF 0x00 ..}
+
+        mov     esi, JSAMPARRAY [input_data(ebp)]       ; input_data
+        mov     edi, JSAMPARRAY [output_data(ebp)]      ; output_data
+        alignx  16,7
+.rowloop:
+        push    ecx
+        push    edi
+        push    esi
+
+        mov     edx, JSAMPROW [esi+0*SIZEOF_JSAMPROW]   ; inptr0
+        mov     esi, JSAMPROW [esi+1*SIZEOF_JSAMPROW]   ; inptr1
+        mov     edi, JSAMPROW [edi]                     ; outptr
+
+        cmp     ecx, byte SIZEOF_XMMWORD
+        jae     short .columnloop
+        alignx  16,7
+
+.columnloop_r8:
+        movdqa  xmm0, XMMWORD [edx+0*SIZEOF_XMMWORD]
+        movdqa  xmm1, XMMWORD [esi+0*SIZEOF_XMMWORD]
+        pxor    xmm2,xmm2
+        pxor    xmm3,xmm3
+        mov     ecx, SIZEOF_XMMWORD
+        jmp     short .downsample
+        alignx  16,7
+
+.columnloop:
+        movdqa  xmm0, XMMWORD [edx+0*SIZEOF_XMMWORD]
+        movdqa  xmm1, XMMWORD [esi+0*SIZEOF_XMMWORD]
+        movdqa  xmm2, XMMWORD [edx+1*SIZEOF_XMMWORD]
+        movdqa  xmm3, XMMWORD [esi+1*SIZEOF_XMMWORD]
+
+.downsample:
+        movdqa  xmm4,xmm0
+        movdqa  xmm5,xmm1
+        pand    xmm0,xmm6
+        psrlw   xmm4,BYTE_BIT
+        pand    xmm1,xmm6
+        psrlw   xmm5,BYTE_BIT
+        paddw   xmm0,xmm4
+        paddw   xmm1,xmm5
+
+        movdqa  xmm4,xmm2
+        movdqa  xmm5,xmm3
+        pand    xmm2,xmm6
+        psrlw   xmm4,BYTE_BIT
+        pand    xmm3,xmm6
+        psrlw   xmm5,BYTE_BIT
+        paddw   xmm2,xmm4
+        paddw   xmm3,xmm5
+
+        paddw   xmm0,xmm1
+        paddw   xmm2,xmm3
+        paddw   xmm0,xmm7
+        paddw   xmm2,xmm7
+        psrlw   xmm0,2
+        psrlw   xmm2,2
+
+        packuswb xmm0,xmm2
+
+        movdqa  XMMWORD [edi+0*SIZEOF_XMMWORD], xmm0
+
+        sub     ecx, byte SIZEOF_XMMWORD        ; outcol
+        add     edx, byte 2*SIZEOF_XMMWORD      ; inptr0
+        add     esi, byte 2*SIZEOF_XMMWORD      ; inptr1
+        add     edi, byte 1*SIZEOF_XMMWORD      ; outptr
+        cmp     ecx, byte SIZEOF_XMMWORD
+        jae     near .columnloop
+        test    ecx,ecx
+        jnz     near .columnloop_r8
+
+        pop     esi
+        pop     edi
+        pop     ecx
+
+        add     esi, byte 2*SIZEOF_JSAMPROW     ; input_data
+        add     edi, byte 1*SIZEOF_JSAMPROW     ; output_data
+        dec     eax                             ; rowctr
+        jg      near .rowloop
+
+.return:
+        pop     edi
+        pop     esi
+;       pop     edx             ; need not be preserved
+;       pop     ecx             ; need not be preserved
+;       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