Update to libjpeg_turbo 1.4.90

simd/jcsample-mmx.asm

+;
+; jcsample.asm - downsampling (MMX)
+;
+; 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_mmx (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_mmx)
+
+EXTN(jsimd_h2v1_downsample_mmx):
+        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      mm7,edx
+        pcmpeqw   mm6,mm6
+        punpckldq mm7,mm7               ; mm7={0, 1, 0, 1}
+        psrlw     mm6,BYTE_BIT          ; mm6={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
+        alignx  16,7
+.columnloop:
+
+        movq    mm0, MMWORD [esi+0*SIZEOF_MMWORD]
+        movq    mm1, MMWORD [esi+1*SIZEOF_MMWORD]
+        movq    mm2,mm0
+        movq    mm3,mm1
+
+        pand    mm0,mm6
+        psrlw   mm2,BYTE_BIT
+        pand    mm1,mm6
+        psrlw   mm3,BYTE_BIT
+
+        paddw   mm0,mm2
+        paddw   mm1,mm3
+        paddw   mm0,mm7
+        paddw   mm1,mm7
+        psrlw   mm0,1
+        psrlw   mm1,1
+
+        packuswb mm0,mm1
+
+        movq    MMWORD [edi+0*SIZEOF_MMWORD], mm0
+
+        add     esi, byte 2*SIZEOF_MMWORD       ; inptr
+        add     edi, byte 1*SIZEOF_MMWORD       ; outptr
+        sub     ecx, byte SIZEOF_MMWORD         ; outcol
+        jnz     short .columnloop
+
+        pop     esi
+        pop     edi
+        pop     ecx
+
+        add     esi, byte SIZEOF_JSAMPROW       ; input_data
+        add     edi, byte SIZEOF_JSAMPROW       ; output_data
+        dec     eax                             ; rowctr
+        jg      short .rowloop
+
+        emms            ; empty MMX state
+
+.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_mmx (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_mmx)
+
+EXTN(jsimd_h2v2_downsample_mmx):
+        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      mm7,edx
+        pcmpeqw   mm6,mm6
+        punpckldq mm7,mm7               ; mm7={1, 2, 1, 2}
+        psrlw     mm6,BYTE_BIT          ; mm6={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
+        alignx  16,7
+.columnloop:
+
+        movq    mm0, MMWORD [edx+0*SIZEOF_MMWORD]
+        movq    mm1, MMWORD [esi+0*SIZEOF_MMWORD]
+        movq    mm2, MMWORD [edx+1*SIZEOF_MMWORD]
+        movq    mm3, MMWORD [esi+1*SIZEOF_MMWORD]
+
+        movq    mm4,mm0
+        movq    mm5,mm1
+        pand    mm0,mm6
+        psrlw   mm4,BYTE_BIT
+        pand    mm1,mm6
+        psrlw   mm5,BYTE_BIT
+        paddw   mm0,mm4
+        paddw   mm1,mm5
+
+        movq    mm4,mm2
+        movq    mm5,mm3
+        pand    mm2,mm6
+        psrlw   mm4,BYTE_BIT
+        pand    mm3,mm6
+        psrlw   mm5,BYTE_BIT
+        paddw   mm2,mm4
+        paddw   mm3,mm5
+
+        paddw   mm0,mm1
+        paddw   mm2,mm3
+        paddw   mm0,mm7
+        paddw   mm2,mm7
+        psrlw   mm0,2
+        psrlw   mm2,2
+
+        packuswb mm0,mm2
+
+        movq    MMWORD [edi+0*SIZEOF_MMWORD], mm0
+
+        add     edx, byte 2*SIZEOF_MMWORD       ; inptr0
+        add     esi, byte 2*SIZEOF_MMWORD       ; inptr1
+        add     edi, byte 1*SIZEOF_MMWORD       ; outptr
+        sub     ecx, byte SIZEOF_MMWORD         ; outcol
+        jnz     near .columnloop
+
+        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
+
+        emms            ; empty MMX state
+
+.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