swscale: make yuv2yuvX_10_sse2/avx 8/9/16-bits aware.

Also implement MMX/MMX2 versions and SSE4 versions.

3 files changed, 227 insertions, 255 deletions

diff --git a/libswscale/x86/scale.asm b/libswscale/x86/scale.asm
index 05e2d96fe6..c8a691603d 100644
--- a/libswscale/x86/scale.asm
+++ b/libswscale/x86/scale.asm
@@ -29,8 +29,11 @@ max_19bit_int: times 4 dd 0x7ffff
 max_19bit_flt: times 4 dd 524287.0
 minshort:      times 8 dw 0x8000
 unicoeff:      times 4 dd 0x20000000
+yuv2yuvX_16_start:  times 4 dd 0x4000 - 0x40000000
 yuv2yuvX_10_start:  times 4 dd 0x10000
+yuv2yuvX_9_start:   times 4 dd 0x20000
 yuv2yuvX_10_upper:  times 8 dw 0x3ff
+yuv2yuvX_9_upper:   times 8 dw 0x1ff
 
 SECTION .text
 
@@ -447,58 +450,216 @@ SCALE_FUNCS2 sse4,  6, 6, 8
 ; of 2. $offset is either 0 or 3. $dither holds 8 values.
 ;-----------------------------------------------------------------------------
 
-%macro yuv2planeX10 1
+%macro yuv2planeX_fn 4
 
 %ifdef ARCH_X86_32
 %define cntr_reg r1
+%define movsx mov
 %else
 %define cntr_reg r11
+%define movsx movsxd
 %endif
 
-cglobal yuv2planeX10_%1, 7, 7
-    xor      r5, r5
-.pixelloop
-    mova     m1, [yuv2yuvX_10_start]
-    mova     m2, m1
-    movsxdifnidn cntr_reg, r1d
-.filterloop
-    pxor     m0, m0
-
-    mov      r6, [r2+gprsize*cntr_reg-2*gprsize]
-    mova     m3, [r6+r5]
-
-    mov      r6, [r2+gprsize*cntr_reg-gprsize]
-    mova     m4, [r6+r5]
-
-    punpcklwd m5, m3, m4
-    punpckhwd m3, m4
-
-    movd     m0, [r0+2*cntr_reg-4]
-    SPLATD   m0, m0
-
-    pmaddwd  m5, m0
-    pmaddwd  m3, m0
-
-    paddd    m2, m5
-    paddd    m1, m3
-
-    sub      cntr_reg, 2
-    jg .filterloop
+cglobal yuv2planeX_%2_%1, %4, 7, %3
+%if %2 == 8 || %2 == 9 || %2 == 10
+    pxor            m6,  m6
+%endif ; %2 == 8/9/10
 
-    psrad    m2, 17
-    psrad    m1, 17
+%if %2 == 8
+%ifdef ARCH_X86_32
+%assign pad 0x2c - (stack_offset & 15)
+    SUB             rsp, pad
+%define m_dith m7
+%else ; x86-64
+%define m_dith m9
+%endif ; x86-32
+
+    ; create registers holding dither
+    movq        m_dith, [r5]             ; dither
+    test            r6d, r6d
+    jz              .no_rot
+%if mmsize == 16
+    punpcklqdq  m_dith,  m_dith
+%endif ; mmsize == 16
+    PALIGNR     m_dith,  m_dith,  3,  m0
+.no_rot:
+%if mmsize == 16
+    punpcklbw   m_dith,  m6
+%ifdef ARCH_X86_64
+    punpcklwd       m8,  m_dith,  m6
+    pslld           m8,  12
+%else ; x86-32
+    punpcklwd       m5,  m_dith,  m6
+    pslld           m5,  12
+%endif ; x86-32/64
+    punpckhwd   m_dith,  m6
+    pslld       m_dith,  12
+%ifdef ARCH_X86_32
+    mova      [rsp+ 0],  m5
+    mova      [rsp+16],  m_dith
+%endif
+%else ; mmsize == 8
+    punpcklbw       m5,  m_dith,  m6
+    punpckhbw   m_dith,  m6
+    punpcklwd       m4,  m5,  m6
+    punpckhwd       m5,  m6
+    punpcklwd       m3,  m_dith,  m6
+    punpckhwd   m_dith,  m6
+    pslld           m4,  12
+    pslld           m5,  12
+    pslld           m3,  12
+    pslld       m_dith,  12
+    mova      [rsp+ 0],  m4
+    mova      [rsp+ 8],  m5
+    mova      [rsp+16],  m3
+    mova      [rsp+24],  m_dith
+%endif ; mmsize == 8/16
+%endif ; %2 == 8
 
-    packusdw m2, m1
-    pminsw   m2, [yuv2yuvX_10_upper]
-    mova     [r3+r5], m2
+    xor             r5,  r5
 
-    add      r5, mmsize
-    sub      r4d, mmsize/2
+.pixelloop
+%assign %%i 0
+    ; the rep here is for the 8bit output mmx case, where dither covers
+    ; 8 pixels but we can only handle 2 pixels per register, and thus 4
+    ; pixels per iteration. In order to not have to keep track of where
+    ; we are w.r.t. dithering, we unroll the mmx/8bit loop x2.
+%if %2 == 8
+%rep 16/mmsize
+%endif ; %2 == 8
+
+%if %2 == 8
+%ifdef ARCH_X86_32
+    mova            m2, [rsp+mmsize*(0+%%i)]
+    mova            m1, [rsp+mmsize*(1+%%i)]
+%else ; x86-64
+    mova            m2,  m8
+    mova            m1,  m_dith
+%endif ; x86-32/64
+%else ; %2 == 9/10/16
+    mova            m1, [yuv2yuvX_%2_start]
+    mova            m2,  m1
+%endif ; %2 == 8/9/10/16
+    movsx     cntr_reg,  r1m
+.filterloop_ %+ %%i
+    ; input pixels
+    mov             r6, [r2+gprsize*cntr_reg-2*gprsize]
+%if %2 == 16
+    mova            m3, [r6+r5*4]
+    mova            m5, [r6+r5*4+mmsize]
+%else ; %2 == 8/9/10
+    mova            m3, [r6+r5*2]
+%endif ; %2 == 8/9/10/16
+    mov             r6, [r2+gprsize*cntr_reg-gprsize]
+%if %2 == 16
+    mova            m4, [r6+r5*4]
+    mova            m6, [r6+r5*4+mmsize]
+%else ; %2 == 8/9/10
+    mova            m4, [r6+r5*2]
+%endif ; %2 == 8/9/10/16
+
+    ; coefficients
+    movd            m0, [r0+2*cntr_reg-4]; coeff[0], coeff[1]
+%if %2 == 16
+    pshuflw         m7,  m0,  0          ; coeff[0]
+    pshuflw         m0,  m0,  0x55       ; coeff[1]
+    pmovsxwd        m7,  m7              ; word -> dword
+    pmovsxwd        m0,  m0              ; word -> dword
+
+    pmulld          m3,  m7
+    pmulld          m5,  m7
+    pmulld          m4,  m0
+    pmulld          m6,  m0
+
+    paddd           m2,  m3
+    paddd           m1,  m5
+    paddd           m2,  m4
+    paddd           m1,  m6
+%else ; %2 == 10/9/8
+    punpcklwd       m5,  m3,  m4
+    punpckhwd       m3,  m4
+    SPLATD          m0,  m0
+
+    pmaddwd         m5,  m0
+    pmaddwd         m3,  m0
+
+    paddd           m2,  m5
+    paddd           m1,  m3
+%endif ; %2 == 8/9/10/16
+
+    sub       cntr_reg,  2
+    jg .filterloop_ %+ %%i
+
+%if %2 == 16
+    psrad           m2,  31 - %2
+    psrad           m1,  31 - %2
+%else ; %2 == 10/9/8
+    psrad           m2,  27 - %2
+    psrad           m1,  27 - %2
+%endif ; %2 == 8/9/10/16
+
+%if %2 == 8
+    packssdw        m2,  m1
+    packuswb        m2,  m2
+    movh     [r3+r5*1],  m2
+%else ; %2 == 9/10/16
+%if %2 == 16
+    packssdw        m2,  m1
+    paddw           m2, [minshort]
+%else ; %2 == 9/10
+%ifidn %1, sse4
+    packusdw        m2,  m1
+%elifidn %1, avx
+    packusdw        m2,  m1
+%else ; mmx2/sse2
+    packssdw        m2,  m1
+    pmaxsw          m2,  m6
+%endif ; mmx2/sse2/sse4/avx
+    pminsw          m2, [yuv2yuvX_%2_upper]
+%endif ; %2 == 9/10/16
+    mova     [r3+r5*2],  m2
+%endif ; %2 == 8/9/10/16
+
+    add             r5,  mmsize/2
+    sub             r4d, mmsize/2
+%if %2 == 8
+%assign %%i %%i+2
+%endrep
+%endif ; %2 == 8
     jg .pixelloop
+
+%if %2 == 8
+%ifdef ARCH_X86_32
+    ADD             rsp, pad
+    RET
+%else ; x86-64
+    REP_RET
+%endif ; x86-32/64
+%else ; %2 == 9/10/16
     REP_RET
+%endif ; %2 == 8/9/10/16
 %endmacro
 
+%define PALIGNR PALIGNR_MMX
+%ifdef ARCH_X86_32
+INIT_MMX
+yuv2planeX_fn mmx,   8,  0, 7
+yuv2planeX_fn mmx2,  9,  0, 5
+yuv2planeX_fn mmx2, 10,  0, 5
+%endif
+
 INIT_XMM
-yuv2planeX10 sse4
+yuv2planeX_fn sse2,  8, 10, 7
+yuv2planeX_fn sse2,  9,  7, 5
+yuv2planeX_fn sse2, 10,  7, 5
+
+%define PALIGNR PALIGNR_SSSE3
+yuv2planeX_fn sse4,  8, 10, 7
+yuv2planeX_fn sse4,  9,  7, 5
+yuv2planeX_fn sse4, 10,  7, 5
+yuv2planeX_fn sse4, 16,  8, 5
+
 INIT_AVX
-yuv2planeX10 avx
+yuv2planeX_fn avx,   8, 10, 7
+yuv2planeX_fn avx,   9,  7, 5
+yuv2planeX_fn avx,  10,  7, 5
diff --git a/libswscale/x86/swscale_mmx.c b/libswscale/x86/swscale_mmx.c
index 3c0632dca5..a923e47538 100644
--- a/libswscale/x86/swscale_mmx.c
+++ b/libswscale/x86/swscale_mmx.c
@@ -211,13 +211,22 @@ SCALE_FUNCS_SSE(sse2);
 SCALE_FUNCS_SSE(ssse3);
 SCALE_FUNCS_SSE(sse4);
 
-extern void ff_yuv2planeX10_sse4(const int16_t *filter, int filterSize,
-                                 const int16_t **src, uint8_t *dest, int dstW,
-                                 const uint8_t *dither, int offset);
+#define VSCALEX_FUNC(size, opt) \
+extern void ff_yuv2planeX_ ## size ## _ ## opt(const int16_t *filter, int filterSize, \
+                                               const int16_t **src, uint8_t *dest, int dstW, \
+                                               const uint8_t *dither, int offset)
+#define VSCALEX_FUNCS(opt1, opt2) \
+    VSCALEX_FUNC(8,  opt1); \
+    VSCALEX_FUNC(9,  opt2); \
+    VSCALEX_FUNC(10, opt2)
 
-extern void ff_yuv2planeX10_avx(const int16_t *filter, int filterSize,
-                                const int16_t **src, uint8_t *dest, int dstW,
-                                const uint8_t *dither, int offset);
+#if ARCH_X86_32
+VSCALEX_FUNCS(mmx,  mmx2);
+#endif
+VSCALEX_FUNCS(sse2, sse2);
+VSCALEX_FUNCS(sse4, sse4);
+VSCALEX_FUNC(16, sse4);
+VSCALEX_FUNCS(avx,  avx);
 
 void ff_sws_init_swScale_mmx(SwsContext *c)
 {
@@ -252,10 +261,18 @@ void ff_sws_init_swScale_mmx(SwsContext *c)
     case 8:  ASSIGN_SCALE_FUNC2(hscalefn, 8, opt1, opt2); break; \
     default: ASSIGN_SCALE_FUNC2(hscalefn, X, opt1, opt2); break; \
     }
+#define ASSIGN_VSCALEX_FUNC(vscalefn, opt1, opt2, opt2chk, do_16_case) \
+switch(c->dstBpc){ \
+    case 16:                                     do_16_case;                           break; \
+    case 10: if (!isBE(c->dstFormat) && opt2chk) vscalefn = ff_yuv2planeX_10_ ## opt2; break; \
+    case 9:  if (!isBE(c->dstFormat) && opt2chk) vscalefn = ff_yuv2planeX_9_  ## opt2; break; \
+    default:                                     vscalefn = ff_yuv2planeX_8_  ## opt1; break; \
+    }
 #if ARCH_X86_32
     if (cpu_flags & AV_CPU_FLAG_MMX) {
         ASSIGN_MMX_SCALE_FUNC(c->hyScale, c->hLumFilterSize, mmx, mmx);
         ASSIGN_MMX_SCALE_FUNC(c->hcScale, c->hChrFilterSize, mmx, mmx);
+        ASSIGN_VSCALEX_FUNC(c->yuv2planeX, mmx, mmx2, cpu_flags & AV_CPU_FLAG_MMX2,);
     }
 #endif
 #define ASSIGN_SSE_SCALE_FUNC(hscalefn, filtersize, opt1, opt2) \
@@ -269,6 +286,7 @@ void ff_sws_init_swScale_mmx(SwsContext *c)
     if (cpu_flags & AV_CPU_FLAG_SSE2) {
         ASSIGN_SSE_SCALE_FUNC(c->hyScale, c->hLumFilterSize, sse2, sse2);
         ASSIGN_SSE_SCALE_FUNC(c->hcScale, c->hChrFilterSize, sse2, sse2);
+        ASSIGN_VSCALEX_FUNC(c->yuv2planeX, sse2, sse2, 1,);
     }
     if (cpu_flags & AV_CPU_FLAG_SSSE3) {
         ASSIGN_SSE_SCALE_FUNC(c->hyScale, c->hLumFilterSize, ssse3, ssse3);
@@ -278,13 +296,12 @@ void ff_sws_init_swScale_mmx(SwsContext *c)
         /* Xto15 don't need special sse4 functions */
         ASSIGN_SSE_SCALE_FUNC(c->hyScale, c->hLumFilterSize, sse4, ssse3);
         ASSIGN_SSE_SCALE_FUNC(c->hcScale, c->hChrFilterSize, sse4, ssse3);
-        if (c->dstBpc == 10 && !isBE(c->dstFormat))
-            c->yuv2planeX = ff_yuv2planeX10_sse4;
+        ASSIGN_VSCALEX_FUNC(c->yuv2planeX, sse4, sse4, 1,
+                            if (!isBE(c->dstFormat)) c->yuv2planeX = ff_yuv2planeX_16_sse4);
     }
 
     if (cpu_flags & AV_CPU_FLAG_AVX) {
-        if (c->dstBpc == 10 && !isBE(c->dstFormat))
-            c->yuv2planeX = ff_yuv2planeX10_avx;
+        ASSIGN_VSCALEX_FUNC(c->yuv2planeX, avx, avx, 1,);
     }
 #endif
 }
diff --git a/libswscale/x86/swscale_template.c b/libswscale/x86/swscale_template.c
index ccf4f7491f..a0381e40f5 100644
--- a/libswscale/x86/swscale_template.c
+++ b/libswscale/x86/swscale_template.c
@@ -35,41 +35,6 @@
 #endif
 #define MOVNTQ(a,b)  REAL_MOVNTQ(a,b)
 
-#define YSCALEYUV2YV12X(offset, dest, end, pos) \
-    __asm__ volatile(\
-        "movq                  "DITHER16"+0(%0), %%mm3      \n\t"\
-        "movq                  "DITHER16"+8(%0), %%mm4      \n\t"\
-        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
-        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
-        ".p2align                             4             \n\t" /* FIXME Unroll? */\
-        "1:                                                 \n\t"\
-        "movq                      8(%%"REG_d"), %%mm0      \n\t" /* filterCoeff */\
-        "movq                (%%"REG_S", %3, 2), %%mm2      \n\t" /* srcData */\
-        "movq               8(%%"REG_S", %3, 2), %%mm5      \n\t" /* srcData */\
-        "add                                $16, %%"REG_d"  \n\t"\
-        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
-        "test                         %%"REG_S", %%"REG_S"  \n\t"\
-        "pmulhw                           %%mm0, %%mm2      \n\t"\
-        "pmulhw                           %%mm0, %%mm5      \n\t"\
-        "paddw                            %%mm2, %%mm3      \n\t"\
-        "paddw                            %%mm5, %%mm4      \n\t"\
-        " jnz                                1b             \n\t"\
-        "psraw                               $3, %%mm3      \n\t"\
-        "psraw                               $3, %%mm4      \n\t"\
-        "packuswb                         %%mm4, %%mm3      \n\t"\
-        MOVNTQ(%%mm3, (%1, %3))\
-        "add                                 $8, %3         \n\t"\
-        "cmp                                 %2, %3         \n\t"\
-        "movq                  "DITHER16"+0(%0), %%mm3      \n\t"\
-        "movq                  "DITHER16"+8(%0), %%mm4      \n\t"\
-        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
-        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
-        "jb                                  1b             \n\t"\
-        :: "r" (&c->redDither),\
-           "r" (dest), "g" ((x86_reg)(end)), "r"((x86_reg)(pos))\
-        : "%"REG_d, "%"REG_S\
-    );
-
 #if !COMPILE_TEMPLATE_MMX2
 static av_always_inline void
 dither_8to16(SwsContext *c, const uint8_t *srcDither, int rot)
@@ -106,175 +71,6 @@ dither_8to16(SwsContext *c, const uint8_t *srcDither, int rot)
 }
 #endif
 
-static void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter,
-                             const int16_t **lumSrc, int lumFilterSize,
-                             const int16_t *chrFilter, const int16_t **chrUSrc,
-                             const int16_t **chrVSrc,
-                             int chrFilterSize, const int16_t **alpSrc,
-                             uint8_t *dest[4], int dstW, int chrDstW)
-{
-    uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
-            *aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
-    const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
-
-    if (uDest) {
-        x86_reg uv_off = c->uv_off_byte >> 1;
-        dither_8to16(c, chrDither, 0);
-        YSCALEYUV2YV12X(CHR_MMX_FILTER_OFFSET, uDest, chrDstW, 0)
-        dither_8to16(c, chrDither, 1);
-        YSCALEYUV2YV12X(CHR_MMX_FILTER_OFFSET, vDest - uv_off, chrDstW + uv_off, uv_off)
-    }
-    dither_8to16(c, lumDither, 0);
-    if (CONFIG_SWSCALE_ALPHA && aDest) {
-        YSCALEYUV2YV12X(ALP_MMX_FILTER_OFFSET, aDest, dstW, 0)
-    }
-
-    YSCALEYUV2YV12X(LUM_MMX_FILTER_OFFSET, yDest, dstW, 0)
-}
-
-#define YSCALEYUV2YV12X_ACCURATE(offset, dest, end, pos) \
-    __asm__ volatile(\
-        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
-        "movq                  "DITHER32"+0(%0), %%mm4      \n\t"\
-        "movq                  "DITHER32"+8(%0), %%mm5      \n\t"\
-        "movq                 "DITHER32"+16(%0), %%mm6      \n\t"\
-        "movq                 "DITHER32"+24(%0), %%mm7      \n\t"\
-        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
-        ".p2align                             4             \n\t"\
-        "1:                                                 \n\t"\
-        "movq                (%%"REG_S", %3, 2), %%mm0      \n\t" /* srcData */\
-        "movq               8(%%"REG_S", %3, 2), %%mm2      \n\t" /* srcData */\
-        "mov        "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S"  \n\t"\
-        "movq                (%%"REG_S", %3, 2), %%mm1      \n\t" /* srcData */\
-        "movq                             %%mm0, %%mm3      \n\t"\
-        "punpcklwd                        %%mm1, %%mm0      \n\t"\
-        "punpckhwd                        %%mm1, %%mm3      \n\t"\
-        "movq       "STR(APCK_COEF)"(%%"REG_d"), %%mm1      \n\t" /* filterCoeff */\
-        "pmaddwd                          %%mm1, %%mm0      \n\t"\
-        "pmaddwd                          %%mm1, %%mm3      \n\t"\
-        "paddd                            %%mm0, %%mm4      \n\t"\
-        "paddd                            %%mm3, %%mm5      \n\t"\
-        "movq               8(%%"REG_S", %3, 2), %%mm3      \n\t" /* srcData */\
-        "mov        "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S"  \n\t"\
-        "add                  $"STR(APCK_SIZE)", %%"REG_d"  \n\t"\
-        "test                         %%"REG_S", %%"REG_S"  \n\t"\
-        "movq                             %%mm2, %%mm0      \n\t"\
-        "punpcklwd                        %%mm3, %%mm2      \n\t"\
-        "punpckhwd                        %%mm3, %%mm0      \n\t"\
-        "pmaddwd                          %%mm1, %%mm2      \n\t"\
-        "pmaddwd                          %%mm1, %%mm0      \n\t"\
-        "paddd                            %%mm2, %%mm6      \n\t"\
-        "paddd                            %%mm0, %%mm7      \n\t"\
-        " jnz                                1b             \n\t"\
-        "psrad                              $16, %%mm4      \n\t"\
-        "psrad                              $16, %%mm5      \n\t"\
-        "psrad                              $16, %%mm6      \n\t"\
-        "psrad                              $16, %%mm7      \n\t"\
-        "movq             "VROUNDER_OFFSET"(%0), %%mm0      \n\t"\
-        "packssdw                         %%mm5, %%mm4      \n\t"\
-        "packssdw                         %%mm7, %%mm6      \n\t"\
-        "paddw                            %%mm0, %%mm4      \n\t"\
-        "paddw                            %%mm0, %%mm6      \n\t"\
-        "psraw                               $3, %%mm4      \n\t"\
-        "psraw                               $3, %%mm6      \n\t"\
-        "packuswb                         %%mm6, %%mm4      \n\t"\
-        MOVNTQ(%%mm4, (%1, %3))\
-        "add                                 $8, %3         \n\t"\
-        "cmp                                 %2, %3         \n\t"\
-        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
-        "movq                  "DITHER32"+0(%0), %%mm4      \n\t"\
-        "movq                  "DITHER32"+8(%0), %%mm5      \n\t"\
-        "movq                 "DITHER32"+16(%0), %%mm6      \n\t"\
-        "movq                 "DITHER32"+24(%0), %%mm7      \n\t"\
-        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
-        "jb                                  1b             \n\t"\
-        :: "r" (&c->redDither),\
-        "r" (dest), "g" ((x86_reg)(end)), "r"((x86_reg)(pos))\
-        : "%"REG_a, "%"REG_d, "%"REG_S\
-    );
-
-#if !COMPILE_TEMPLATE_MMX2
-static av_always_inline void
-dither_8to32(SwsContext *c, const uint8_t *srcDither, int rot)
-{
-    if (rot) {
-        __asm__ volatile("pxor      %%mm0, %%mm0\n\t"
-                         "movq       (%0), %%mm4\n\t"
-                         "movq      %%mm4, %%mm5\n\t"
-                         "psrlq       $24, %%mm4\n\t"
-                         "psllq       $40, %%mm5\n\t"
-                         "por       %%mm5, %%mm4\n\t"
-                         "movq      %%mm4, %%mm6\n\t"
-                         "punpcklbw %%mm0, %%mm4\n\t"
-                         "punpckhbw %%mm0, %%mm6\n\t"
-                         "movq      %%mm4, %%mm5\n\t"
-                         "movq      %%mm6, %%mm7\n\t"
-                         "punpcklwd %%mm0, %%mm4\n\t"
-                         "punpckhwd %%mm0, %%mm5\n\t"
-                         "punpcklwd %%mm0, %%mm6\n\t"
-                         "punpckhwd %%mm0, %%mm7\n\t"
-                         "pslld       $12, %%mm4\n\t"
-                         "pslld       $12, %%mm5\n\t"
-                         "pslld       $12, %%mm6\n\t"
-                         "pslld       $12, %%mm7\n\t"
-                         "movq      %%mm4, "DITHER32"+0(%1)\n\t"
-                         "movq      %%mm5, "DITHER32"+8(%1)\n\t"
-                         "movq      %%mm6, "DITHER32"+16(%1)\n\t"
-                         "movq      %%mm7, "DITHER32"+24(%1)\n\t"
-                         :: "r"(srcDither), "r"(&c->redDither)
-                         );
-    } else {
-        __asm__ volatile("pxor      %%mm0, %%mm0\n\t"
-                         "movq       (%0), %%mm4\n\t"
-                         "movq      %%mm4, %%mm6\n\t"
-                         "punpcklbw %%mm0, %%mm4\n\t"
-                         "punpckhbw %%mm0, %%mm6\n\t"
-                         "movq      %%mm4, %%mm5\n\t"
-                         "movq      %%mm6, %%mm7\n\t"
-                         "punpcklwd %%mm0, %%mm4\n\t"
-                         "punpckhwd %%mm0, %%mm5\n\t"
-                         "punpcklwd %%mm0, %%mm6\n\t"
-                         "punpckhwd %%mm0, %%mm7\n\t"
-                         "pslld       $12, %%mm4\n\t"
-                         "pslld       $12, %%mm5\n\t"
-                         "pslld       $12, %%mm6\n\t"
-                         "pslld       $12, %%mm7\n\t"
-                         "movq      %%mm4, "DITHER32"+0(%1)\n\t"
-                         "movq      %%mm5, "DITHER32"+8(%1)\n\t"
-                         "movq      %%mm6, "DITHER32"+16(%1)\n\t"
-                         "movq      %%mm7, "DITHER32"+24(%1)\n\t"
-                         :: "r"(srcDither), "r"(&c->redDither)
-                         );
-    }
-}
-#endif
-
-static void RENAME(yuv2yuvX_ar)(SwsContext *c, const int16_t *lumFilter,
-                                const int16_t **lumSrc, int lumFilterSize,
-                                const int16_t *chrFilter, const int16_t **chrUSrc,
-                                const int16_t **chrVSrc,
-                                int chrFilterSize, const int16_t **alpSrc,
-                                uint8_t *dest[4], int dstW, int chrDstW)
-{
-    uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
-            *aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
-    const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
-
-    if (uDest) {
-        x86_reg uv_off = c->uv_off_byte >> 1;
-        dither_8to32(c, chrDither, 0);
-        YSCALEYUV2YV12X_ACCURATE(CHR_MMX_FILTER_OFFSET, uDest, chrDstW, 0)
-        dither_8to32(c, chrDither, 1);
-        YSCALEYUV2YV12X_ACCURATE(CHR_MMX_FILTER_OFFSET, vDest - uv_off, chrDstW + uv_off, uv_off)
-    }
-    dither_8to32(c, lumDither, 0);
-    if (CONFIG_SWSCALE_ALPHA && aDest) {
-        YSCALEYUV2YV12X_ACCURATE(ALP_MMX_FILTER_OFFSET, aDest, dstW, 0)
-    }
-
-    YSCALEYUV2YV12X_ACCURATE(LUM_MMX_FILTER_OFFSET, yDest, dstW, 0)
-}
-
 static void RENAME(yuv2yuv1)(SwsContext *c, const int16_t *lumSrc,
                              const int16_t *chrUSrc, const int16_t *chrVSrc,
                              const int16_t *alpSrc,
@@ -2104,7 +1900,6 @@ static av_cold void RENAME(sws_init_swScale)(SwsContext *c)
         if (!(c->flags & SWS_BITEXACT)) {
             if (c->flags & SWS_ACCURATE_RND) {
                 //c->yuv2yuv1 = RENAME(yuv2yuv1_ar    );
-                //c->yuv2yuvX = RENAME(yuv2yuvX_ar    );
                 if (!(c->flags & SWS_FULL_CHR_H_INT)) {
                     switch (c->dstFormat) {
                     case PIX_FMT_RGB32:   c->yuv2packedX = RENAME(yuv2rgb32_X_ar);   break;
@@ -2117,7 +1912,6 @@ static av_cold void RENAME(sws_init_swScale)(SwsContext *c)
                 }
             } else {
                 //c->yuv2yuv1 = RENAME(yuv2yuv1    );
-                //c->yuv2yuvX = RENAME(yuv2yuvX    );
                 if (!(c->flags & SWS_FULL_CHR_H_INT)) {
                     switch (c->dstFormat) {
                     case PIX_FMT_RGB32:   c->yuv2packedX = RENAME(yuv2rgb32_X);   break;