dsputil: Split motion estimation compare bits off into their own context

1 files changed, 1321 insertions, 0 deletions

diff --git a/libavcodec/x86/me_cmp_init.c b/libavcodec/x86/me_cmp_init.c
new file mode 100644
index 0000000000..e93b67b053
--- /dev/null
+++ b/libavcodec/x86/me_cmp_init.c
@@ -0,0 +1,1321 @@
+/*
+ * SIMD-optimized motion estimation
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
+ *
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/x86/asm.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/me_cmp.h"
+#include "libavcodec/mpegvideo.h"
+
+#if HAVE_INLINE_ASM
+
+static int sse8_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
+                    int line_size, int h)
+{
+    int tmp;
+
+    __asm__ volatile (
+        "movl         %4, %%ecx          \n"
+        "shr          $1, %%ecx          \n"
+        "pxor      %%mm0, %%mm0          \n" /* mm0 = 0 */
+        "pxor      %%mm7, %%mm7          \n" /* mm7 holds the sum */
+        "1:                              \n"
+        "movq       (%0), %%mm1          \n" /* mm1 = pix1[0][0 - 7] */
+        "movq       (%1), %%mm2          \n" /* mm2 = pix2[0][0 - 7] */
+        "movq   (%0, %3), %%mm3          \n" /* mm3 = pix1[1][0 - 7] */
+        "movq   (%1, %3), %%mm4          \n" /* mm4 = pix2[1][0 - 7] */
+
+        /* todo: mm1-mm2, mm3-mm4 */
+        /* algo: subtract mm1 from mm2 with saturation and vice versa */
+        /*       OR the results to get absolute difference */
+        "movq      %%mm1, %%mm5          \n"
+        "movq      %%mm3, %%mm6          \n"
+        "psubusb   %%mm2, %%mm1          \n"
+        "psubusb   %%mm4, %%mm3          \n"
+        "psubusb   %%mm5, %%mm2          \n"
+        "psubusb   %%mm6, %%mm4          \n"
+
+        "por       %%mm1, %%mm2          \n"
+        "por       %%mm3, %%mm4          \n"
+
+        /* now convert to 16-bit vectors so we can square them */
+        "movq      %%mm2, %%mm1          \n"
+        "movq      %%mm4, %%mm3          \n"
+
+        "punpckhbw %%mm0, %%mm2          \n"
+        "punpckhbw %%mm0, %%mm4          \n"
+        "punpcklbw %%mm0, %%mm1          \n" /* mm1 now spread over (mm1, mm2) */
+        "punpcklbw %%mm0, %%mm3          \n" /* mm4 now spread over (mm3, mm4) */
+
+        "pmaddwd   %%mm2, %%mm2          \n"
+        "pmaddwd   %%mm4, %%mm4          \n"
+        "pmaddwd   %%mm1, %%mm1          \n"
+        "pmaddwd   %%mm3, %%mm3          \n"
+
+        "lea (%0, %3, 2), %0             \n" /* pix1 += 2 * line_size */
+        "lea (%1, %3, 2), %1             \n" /* pix2 += 2 * line_size */
+
+        "paddd     %%mm2, %%mm1          \n"
+        "paddd     %%mm4, %%mm3          \n"
+        "paddd     %%mm1, %%mm7          \n"
+        "paddd     %%mm3, %%mm7          \n"
+
+        "decl      %%ecx                 \n"
+        "jnz       1b                    \n"
+
+        "movq      %%mm7, %%mm1          \n"
+        "psrlq       $32, %%mm7          \n" /* shift hi dword to lo */
+        "paddd     %%mm7, %%mm1          \n"
+        "movd      %%mm1, %2             \n"
+        : "+r" (pix1), "+r" (pix2), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp;
+}
+
+static int sse16_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
+                     int line_size, int h)
+{
+    int tmp;
+
+    __asm__ volatile (
+        "movl %4, %%ecx\n"
+        "pxor %%mm0, %%mm0\n"    /* mm0 = 0 */
+        "pxor %%mm7, %%mm7\n"    /* mm7 holds the sum */
+        "1:\n"
+        "movq (%0), %%mm1\n"     /* mm1 = pix1[0 -  7] */
+        "movq (%1), %%mm2\n"     /* mm2 = pix2[0 -  7] */
+        "movq 8(%0), %%mm3\n"    /* mm3 = pix1[8 - 15] */
+        "movq 8(%1), %%mm4\n"    /* mm4 = pix2[8 - 15] */
+
+        /* todo: mm1-mm2, mm3-mm4 */
+        /* algo: subtract mm1 from mm2 with saturation and vice versa */
+        /*       OR the results to get absolute difference */
+        "movq %%mm1, %%mm5\n"
+        "movq %%mm3, %%mm6\n"
+        "psubusb %%mm2, %%mm1\n"
+        "psubusb %%mm4, %%mm3\n"
+        "psubusb %%mm5, %%mm2\n"
+        "psubusb %%mm6, %%mm4\n"
+
+        "por %%mm1, %%mm2\n"
+        "por %%mm3, %%mm4\n"
+
+        /* now convert to 16-bit vectors so we can square them */
+        "movq %%mm2, %%mm1\n"
+        "movq %%mm4, %%mm3\n"
+
+        "punpckhbw %%mm0, %%mm2\n"
+        "punpckhbw %%mm0, %%mm4\n"
+        "punpcklbw %%mm0, %%mm1\n" /* mm1 now spread over (mm1, mm2) */
+        "punpcklbw %%mm0, %%mm3\n" /* mm4 now spread over (mm3, mm4) */
+
+        "pmaddwd %%mm2, %%mm2\n"
+        "pmaddwd %%mm4, %%mm4\n"
+        "pmaddwd %%mm1, %%mm1\n"
+        "pmaddwd %%mm3, %%mm3\n"
+
+        "add %3, %0\n"
+        "add %3, %1\n"
+
+        "paddd %%mm2, %%mm1\n"
+        "paddd %%mm4, %%mm3\n"
+        "paddd %%mm1, %%mm7\n"
+        "paddd %%mm3, %%mm7\n"
+
+        "decl %%ecx\n"
+        "jnz 1b\n"
+
+        "movq %%mm7, %%mm1\n"
+        "psrlq $32, %%mm7\n"    /* shift hi dword to lo */
+        "paddd %%mm7, %%mm1\n"
+        "movd %%mm1, %2\n"
+        : "+r" (pix1), "+r" (pix2), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp;
+}
+
+static int hf_noise8_mmx(uint8_t *pix1, int line_size, int h)
+{
+    int tmp;
+
+    __asm__ volatile (
+        "movl %3, %%ecx\n"
+        "pxor %%mm7, %%mm7\n"
+        "pxor %%mm6, %%mm6\n"
+
+        "movq (%0), %%mm0\n"
+        "movq %%mm0, %%mm1\n"
+        "psllq $8, %%mm0\n"
+        "psrlq $8, %%mm1\n"
+        "psrlq $8, %%mm0\n"
+        "movq %%mm0, %%mm2\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm0\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm2\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm0\n"
+        "psubw %%mm3, %%mm2\n"
+
+        "add %2, %0\n"
+
+        "movq (%0), %%mm4\n"
+        "movq %%mm4, %%mm1\n"
+        "psllq $8, %%mm4\n"
+        "psrlq $8, %%mm1\n"
+        "psrlq $8, %%mm4\n"
+        "movq %%mm4, %%mm5\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm4\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm5\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm4\n"
+        "psubw %%mm3, %%mm5\n"
+        "psubw %%mm4, %%mm0\n"
+        "psubw %%mm5, %%mm2\n"
+        "pxor %%mm3, %%mm3\n"
+        "pxor %%mm1, %%mm1\n"
+        "pcmpgtw %%mm0, %%mm3\n\t"
+        "pcmpgtw %%mm2, %%mm1\n\t"
+        "pxor %%mm3, %%mm0\n"
+        "pxor %%mm1, %%mm2\n"
+        "psubw %%mm3, %%mm0\n"
+        "psubw %%mm1, %%mm2\n"
+        "paddw %%mm0, %%mm2\n"
+        "paddw %%mm2, %%mm6\n"
+
+        "add %2, %0\n"
+        "1:\n"
+
+        "movq (%0), %%mm0\n"
+        "movq %%mm0, %%mm1\n"
+        "psllq $8, %%mm0\n"
+        "psrlq $8, %%mm1\n"
+        "psrlq $8, %%mm0\n"
+        "movq %%mm0, %%mm2\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm0\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm2\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm0\n"
+        "psubw %%mm3, %%mm2\n"
+        "psubw %%mm0, %%mm4\n"
+        "psubw %%mm2, %%mm5\n"
+        "pxor  %%mm3, %%mm3\n"
+        "pxor  %%mm1, %%mm1\n"
+        "pcmpgtw %%mm4, %%mm3\n\t"
+        "pcmpgtw %%mm5, %%mm1\n\t"
+        "pxor  %%mm3, %%mm4\n"
+        "pxor  %%mm1, %%mm5\n"
+        "psubw %%mm3, %%mm4\n"
+        "psubw %%mm1, %%mm5\n"
+        "paddw %%mm4, %%mm5\n"
+        "paddw %%mm5, %%mm6\n"
+
+        "add %2, %0\n"
+
+        "movq (%0), %%mm4\n"
+        "movq      %%mm4, %%mm1\n"
+        "psllq $8, %%mm4\n"
+        "psrlq $8, %%mm1\n"
+        "psrlq $8, %%mm4\n"
+        "movq      %%mm4, %%mm5\n"
+        "movq      %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm4\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm5\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw     %%mm1, %%mm4\n"
+        "psubw     %%mm3, %%mm5\n"
+        "psubw     %%mm4, %%mm0\n"
+        "psubw     %%mm5, %%mm2\n"
+        "pxor      %%mm3, %%mm3\n"
+        "pxor      %%mm1, %%mm1\n"
+        "pcmpgtw   %%mm0, %%mm3\n\t"
+        "pcmpgtw   %%mm2, %%mm1\n\t"
+        "pxor      %%mm3, %%mm0\n"
+        "pxor      %%mm1, %%mm2\n"
+        "psubw     %%mm3, %%mm0\n"
+        "psubw     %%mm1, %%mm2\n"
+        "paddw     %%mm0, %%mm2\n"
+        "paddw     %%mm2, %%mm6\n"
+
+        "add  %2, %0\n"
+        "subl $2, %%ecx\n"
+        " jnz 1b\n"
+
+        "movq      %%mm6, %%mm0\n"
+        "punpcklwd %%mm7, %%mm0\n"
+        "punpckhwd %%mm7, %%mm6\n"
+        "paddd     %%mm0, %%mm6\n"
+
+        "movq  %%mm6, %%mm0\n"
+        "psrlq $32,   %%mm6\n"
+        "paddd %%mm6, %%mm0\n"
+        "movd  %%mm0, %1\n"
+        : "+r" (pix1), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "g" (h - 2)
+        : "%ecx");
+
+    return tmp;
+}
+
+static int hf_noise16_mmx(uint8_t *pix1, int line_size, int h)
+{
+    int tmp;
+    uint8_t *pix = pix1;
+
+    __asm__ volatile (
+        "movl %3, %%ecx\n"
+        "pxor %%mm7, %%mm7\n"
+        "pxor %%mm6, %%mm6\n"
+
+        "movq (%0), %%mm0\n"
+        "movq 1(%0), %%mm1\n"
+        "movq %%mm0, %%mm2\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm0\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm2\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm0\n"
+        "psubw %%mm3, %%mm2\n"
+
+        "add %2, %0\n"
+
+        "movq (%0), %%mm4\n"
+        "movq 1(%0), %%mm1\n"
+        "movq %%mm4, %%mm5\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm4\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm5\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm4\n"
+        "psubw %%mm3, %%mm5\n"
+        "psubw %%mm4, %%mm0\n"
+        "psubw %%mm5, %%mm2\n"
+        "pxor %%mm3, %%mm3\n"
+        "pxor %%mm1, %%mm1\n"
+        "pcmpgtw %%mm0, %%mm3\n\t"
+        "pcmpgtw %%mm2, %%mm1\n\t"
+        "pxor %%mm3, %%mm0\n"
+        "pxor %%mm1, %%mm2\n"
+        "psubw %%mm3, %%mm0\n"
+        "psubw %%mm1, %%mm2\n"
+        "paddw %%mm0, %%mm2\n"
+        "paddw %%mm2, %%mm6\n"
+
+        "add %2, %0\n"
+        "1:\n"
+
+        "movq (%0), %%mm0\n"
+        "movq 1(%0), %%mm1\n"
+        "movq %%mm0, %%mm2\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm0\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm2\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm0\n"
+        "psubw %%mm3, %%mm2\n"
+        "psubw %%mm0, %%mm4\n"
+        "psubw %%mm2, %%mm5\n"
+        "pxor %%mm3, %%mm3\n"
+        "pxor %%mm1, %%mm1\n"
+        "pcmpgtw %%mm4, %%mm3\n\t"
+        "pcmpgtw %%mm5, %%mm1\n\t"
+        "pxor %%mm3, %%mm4\n"
+        "pxor %%mm1, %%mm5\n"
+        "psubw %%mm3, %%mm4\n"
+        "psubw %%mm1, %%mm5\n"
+        "paddw %%mm4, %%mm5\n"
+        "paddw %%mm5, %%mm6\n"
+
+        "add %2, %0\n"
+
+        "movq (%0), %%mm4\n"
+        "movq 1(%0), %%mm1\n"
+        "movq %%mm4, %%mm5\n"
+        "movq %%mm1, %%mm3\n"
+        "punpcklbw %%mm7, %%mm4\n"
+        "punpcklbw %%mm7, %%mm1\n"
+        "punpckhbw %%mm7, %%mm5\n"
+        "punpckhbw %%mm7, %%mm3\n"
+        "psubw %%mm1, %%mm4\n"
+        "psubw %%mm3, %%mm5\n"
+        "psubw %%mm4, %%mm0\n"
+        "psubw %%mm5, %%mm2\n"
+        "pxor %%mm3, %%mm3\n"
+        "pxor %%mm1, %%mm1\n"
+        "pcmpgtw %%mm0, %%mm3\n\t"
+        "pcmpgtw %%mm2, %%mm1\n\t"
+        "pxor %%mm3, %%mm0\n"
+        "pxor %%mm1, %%mm2\n"
+        "psubw %%mm3, %%mm0\n"
+        "psubw %%mm1, %%mm2\n"
+        "paddw %%mm0, %%mm2\n"
+        "paddw %%mm2, %%mm6\n"
+
+        "add %2, %0\n"
+        "subl $2, %%ecx\n"
+        " jnz 1b\n"
+
+        "movq %%mm6, %%mm0\n"
+        "punpcklwd %%mm7, %%mm0\n"
+        "punpckhwd %%mm7, %%mm6\n"
+        "paddd %%mm0, %%mm6\n"
+
+        "movq %%mm6, %%mm0\n"
+        "psrlq $32, %%mm6\n"
+        "paddd %%mm6, %%mm0\n"
+        "movd %%mm0, %1\n"
+        : "+r" (pix1), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "g" (h - 2)
+        : "%ecx");
+
+    return tmp + hf_noise8_mmx(pix + 8, line_size, h);
+}
+
+static int nsse16_mmx(MpegEncContext *c, uint8_t *pix1, uint8_t *pix2,
+                      int line_size, int h)
+{
+    int score1, score2;
+
+    if (c)
+        score1 = c->mecc.sse[0](c, pix1, pix2, line_size, h);
+    else
+        score1 = sse16_mmx(c, pix1, pix2, line_size, h);
+    score2 = hf_noise16_mmx(pix1, line_size, h) -
+             hf_noise16_mmx(pix2, line_size, h);
+
+    if (c)
+        return score1 + FFABS(score2) * c->avctx->nsse_weight;
+    else
+        return score1 + FFABS(score2) * 8;
+}
+
+static int nsse8_mmx(MpegEncContext *c, uint8_t *pix1, uint8_t *pix2,
+                     int line_size, int h)
+{
+    int score1 = sse8_mmx(c, pix1, pix2, line_size, h);
+    int score2 = hf_noise8_mmx(pix1, line_size, h) -
+                 hf_noise8_mmx(pix2, line_size, h);
+
+    if (c)
+        return score1 + FFABS(score2) * c->avctx->nsse_weight;
+    else
+        return score1 + FFABS(score2) * 8;
+}
+
+static int vsad_intra16_mmx(MpegEncContext *v, uint8_t *pix, uint8_t *dummy,
+                            int line_size, int h)
+{
+    int tmp;
+
+    assert((((int) pix) & 7) == 0);
+    assert((line_size & 7) == 0);
+
+#define SUM(in0, in1, out0, out1)               \
+    "movq (%0), %%mm2\n"                        \
+    "movq 8(%0), %%mm3\n"                       \
+    "add %2,%0\n"                               \
+    "movq %%mm2, " #out0 "\n"                   \
+    "movq %%mm3, " #out1 "\n"                   \
+    "psubusb " #in0 ", %%mm2\n"                 \
+    "psubusb " #in1 ", %%mm3\n"                 \
+    "psubusb " #out0 ", " #in0 "\n"             \
+    "psubusb " #out1 ", " #in1 "\n"             \
+    "por %%mm2, " #in0 "\n"                     \
+    "por %%mm3, " #in1 "\n"                     \
+    "movq " #in0 ", %%mm2\n"                    \
+    "movq " #in1 ", %%mm3\n"                    \
+    "punpcklbw %%mm7, " #in0 "\n"               \
+    "punpcklbw %%mm7, " #in1 "\n"               \
+    "punpckhbw %%mm7, %%mm2\n"                  \
+    "punpckhbw %%mm7, %%mm3\n"                  \
+    "paddw " #in1 ", " #in0 "\n"                \
+    "paddw %%mm3, %%mm2\n"                      \
+    "paddw %%mm2, " #in0 "\n"                   \
+    "paddw " #in0 ", %%mm6\n"
+
+
+    __asm__ volatile (
+        "movl    %3, %%ecx\n"
+        "pxor %%mm6, %%mm6\n"
+        "pxor %%mm7, %%mm7\n"
+        "movq  (%0), %%mm0\n"
+        "movq 8(%0), %%mm1\n"
+        "add %2, %0\n"
+        "jmp 2f\n"
+        "1:\n"
+
+        SUM(%%mm4, %%mm5, %%mm0, %%mm1)
+        "2:\n"
+        SUM(%%mm0, %%mm1, %%mm4, %%mm5)
+
+        "subl $2, %%ecx\n"
+        "jnz 1b\n"
+
+        "movq  %%mm6, %%mm0\n"
+        "psrlq $32,   %%mm6\n"
+        "paddw %%mm6, %%mm0\n"
+        "movq  %%mm0, %%mm6\n"
+        "psrlq $16,   %%mm0\n"
+        "paddw %%mm6, %%mm0\n"
+        "movd  %%mm0, %1\n"
+        : "+r" (pix), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp & 0xFFFF;
+}
+#undef SUM
+
+static int vsad_intra16_mmxext(MpegEncContext *v, uint8_t *pix, uint8_t *dummy,
+                               int line_size, int h)
+{
+    int tmp;
+
+    assert((((int) pix) & 7) == 0);
+    assert((line_size & 7) == 0);
+
+#define SUM(in0, in1, out0, out1)               \
+    "movq (%0), " #out0 "\n"                    \
+    "movq 8(%0), " #out1 "\n"                   \
+    "add %2, %0\n"                              \
+    "psadbw " #out0 ", " #in0 "\n"              \
+    "psadbw " #out1 ", " #in1 "\n"              \
+    "paddw " #in1 ", " #in0 "\n"                \
+    "paddw " #in0 ", %%mm6\n"
+
+    __asm__ volatile (
+        "movl %3, %%ecx\n"
+        "pxor %%mm6, %%mm6\n"
+        "pxor %%mm7, %%mm7\n"
+        "movq (%0), %%mm0\n"
+        "movq 8(%0), %%mm1\n"
+        "add %2, %0\n"
+        "jmp 2f\n"
+        "1:\n"
+
+        SUM(%%mm4, %%mm5, %%mm0, %%mm1)
+        "2:\n"
+        SUM(%%mm0, %%mm1, %%mm4, %%mm5)
+
+        "subl $2, %%ecx\n"
+        "jnz 1b\n"
+
+        "movd %%mm6, %1\n"
+        : "+r" (pix), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp;
+}
+#undef SUM
+
+static int vsad16_mmx(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
+                      int line_size, int h)
+{
+    int tmp;
+
+    assert((((int) pix1) & 7) == 0);
+    assert((((int) pix2) & 7) == 0);
+    assert((line_size & 7) == 0);
+
+#define SUM(in0, in1, out0, out1)       \
+    "movq (%0), %%mm2\n"                \
+    "movq (%1), " #out0 "\n"            \
+    "movq 8(%0), %%mm3\n"               \
+    "movq 8(%1), " #out1 "\n"           \
+    "add %3, %0\n"                      \
+    "add %3, %1\n"                      \
+    "psubb " #out0 ", %%mm2\n"          \
+    "psubb " #out1 ", %%mm3\n"          \
+    "pxor %%mm7, %%mm2\n"               \
+    "pxor %%mm7, %%mm3\n"               \
+    "movq %%mm2, " #out0 "\n"           \
+    "movq %%mm3, " #out1 "\n"           \
+    "psubusb " #in0 ", %%mm2\n"         \
+    "psubusb " #in1 ", %%mm3\n"         \
+    "psubusb " #out0 ", " #in0 "\n"     \
+    "psubusb " #out1 ", " #in1 "\n"     \
+    "por %%mm2, " #in0 "\n"             \
+    "por %%mm3, " #in1 "\n"             \
+    "movq " #in0 ", %%mm2\n"            \
+    "movq " #in1 ", %%mm3\n"            \
+    "punpcklbw %%mm7, " #in0 "\n"       \
+    "punpcklbw %%mm7, " #in1 "\n"       \
+    "punpckhbw %%mm7, %%mm2\n"          \
+    "punpckhbw %%mm7, %%mm3\n"          \
+    "paddw " #in1 ", " #in0 "\n"        \
+    "paddw %%mm3, %%mm2\n"              \
+    "paddw %%mm2, " #in0 "\n"           \
+    "paddw " #in0 ", %%mm6\n"
+
+
+    __asm__ volatile (
+        "movl %4, %%ecx\n"
+        "pxor %%mm6, %%mm6\n"
+        "pcmpeqw %%mm7, %%mm7\n"
+        "psllw $15, %%mm7\n"
+        "packsswb %%mm7, %%mm7\n"
+        "movq (%0), %%mm0\n"
+        "movq (%1), %%mm2\n"
+        "movq 8(%0), %%mm1\n"
+        "movq 8(%1), %%mm3\n"
+        "add %3, %0\n"
+        "add %3, %1\n"
+        "psubb %%mm2, %%mm0\n"
+        "psubb %%mm3, %%mm1\n"
+        "pxor %%mm7, %%mm0\n"
+        "pxor %%mm7, %%mm1\n"
+        "jmp 2f\n"
+        "1:\n"
+
+        SUM(%%mm4, %%mm5, %%mm0, %%mm1)
+        "2:\n"
+        SUM(%%mm0, %%mm1, %%mm4, %%mm5)
+
+        "subl $2, %%ecx\n"
+        "jnz 1b\n"
+
+        "movq %%mm6, %%mm0\n"
+        "psrlq $32, %%mm6\n"
+        "paddw %%mm6, %%mm0\n"
+        "movq %%mm0, %%mm6\n"
+        "psrlq $16, %%mm0\n"
+        "paddw %%mm6, %%mm0\n"
+        "movd %%mm0, %2\n"
+        : "+r" (pix1), "+r" (pix2), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp & 0x7FFF;
+}
+#undef SUM
+
+static int vsad16_mmxext(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
+                         int line_size, int h)
+{
+    int tmp;
+
+    assert((((int) pix1) & 7) == 0);
+    assert((((int) pix2) & 7) == 0);
+    assert((line_size & 7) == 0);
+
+#define SUM(in0, in1, out0, out1)               \
+    "movq (%0), " #out0 "\n"                    \
+    "movq (%1), %%mm2\n"                        \
+    "movq 8(%0), " #out1 "\n"                   \
+    "movq 8(%1), %%mm3\n"                       \
+    "add %3, %0\n"                              \
+    "add %3, %1\n"                              \
+    "psubb %%mm2, " #out0 "\n"                  \
+    "psubb %%mm3, " #out1 "\n"                  \
+    "pxor %%mm7, " #out0 "\n"                   \
+    "pxor %%mm7, " #out1 "\n"                   \
+    "psadbw " #out0 ", " #in0 "\n"              \
+    "psadbw " #out1 ", " #in1 "\n"              \
+    "paddw " #in1 ", " #in0 "\n"                \
+    "paddw " #in0 ", %%mm6\n    "
+
+    __asm__ volatile (
+        "movl %4, %%ecx\n"
+        "pxor %%mm6, %%mm6\n"
+        "pcmpeqw %%mm7, %%mm7\n"
+        "psllw $15, %%mm7\n"
+        "packsswb %%mm7, %%mm7\n"
+        "movq (%0), %%mm0\n"
+        "movq (%1), %%mm2\n"
+        "movq 8(%0), %%mm1\n"
+        "movq 8(%1), %%mm3\n"
+        "add %3, %0\n"
+        "add %3, %1\n"
+        "psubb %%mm2, %%mm0\n"
+        "psubb %%mm3, %%mm1\n"
+        "pxor %%mm7, %%mm0\n"
+        "pxor %%mm7, %%mm1\n"
+        "jmp 2f\n"
+        "1:\n"
+
+        SUM(%%mm4, %%mm5, %%mm0, %%mm1)
+        "2:\n"
+        SUM(%%mm0, %%mm1, %%mm4, %%mm5)
+
+        "subl $2, %%ecx\n"
+        "jnz 1b\n"
+
+        "movd %%mm6, %2\n"
+        : "+r" (pix1), "+r" (pix2), "=r" (tmp)
+        : "r" ((x86_reg) line_size), "m" (h)
+        : "%ecx");
+
+    return tmp;
+}
+#undef SUM
+
+#define MMABS_MMX(a,z)                          \
+    "pxor "    #z ", " #z "             \n\t"   \
+    "pcmpgtw " #a ", " #z "             \n\t"   \
+    "pxor "    #z ", " #a "             \n\t"   \
+    "psubw "   #z ", " #a "             \n\t"
+
+#define MMABS_MMXEXT(a, z)                      \
+    "pxor "    #z ", " #z "             \n\t"   \
+    "psubw "   #a ", " #z "             \n\t"   \
+    "pmaxsw "  #z ", " #a "             \n\t"
+
+#define MMABS_SSSE3(a,z)                        \
+    "pabsw "   #a ", " #a "             \n\t"
+
+#define MMABS_SUM(a,z, sum)                     \
+    MMABS(a,z)                                  \
+    "paddusw " #a ", " #sum "           \n\t"
+
+/* FIXME: HSUM_* saturates at 64k, while an 8x8 hadamard or dct block can get
+ * up to about 100k on extreme inputs. But that's very unlikely to occur in
+ * natural video, and it's even more unlikely to not have any alternative
+ * mvs/modes with lower cost. */
+#define HSUM_MMX(a, t, dst)                     \
+    "movq    " #a ", " #t "             \n\t"   \
+    "psrlq      $32, " #a "             \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "movq    " #a ", " #t "             \n\t"   \
+    "psrlq      $16, " #a "             \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "movd    " #a ", " #dst "           \n\t"   \
+
+#define HSUM_MMXEXT(a, t, dst)                  \
+    "pshufw   $0x0E, " #a ", " #t "     \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "pshufw   $0x01, " #a ", " #t "     \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "movd    " #a ", " #dst "           \n\t"   \
+
+#define HSUM_SSE2(a, t, dst)                    \
+    "movhlps " #a ", " #t "             \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "pshuflw  $0x0E, " #a ", " #t "     \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "pshuflw  $0x01, " #a ", " #t "     \n\t"   \
+    "paddusw " #t ", " #a "             \n\t"   \
+    "movd    " #a ", " #dst "           \n\t"   \
+
+#define DCT_SAD4(m, mm, o)                      \
+    "mov"#m" "#o" +  0(%1), " #mm "2    \n\t"   \
+    "mov"#m" "#o" + 16(%1), " #mm "3    \n\t"   \
+    "mov"#m" "#o" + 32(%1), " #mm "4    \n\t"   \
+    "mov"#m" "#o" + 48(%1), " #mm "5    \n\t"   \
+    MMABS_SUM(mm ## 2, mm ## 6, mm ## 0)        \
+    MMABS_SUM(mm ## 3, mm ## 7, mm ## 1)        \
+    MMABS_SUM(mm ## 4, mm ## 6, mm ## 0)        \
+    MMABS_SUM(mm ## 5, mm ## 7, mm ## 1)        \
+
+#define DCT_SAD_MMX                             \
+    "pxor    %%mm0, %%mm0               \n\t"   \
+    "pxor    %%mm1, %%mm1               \n\t"   \
+    DCT_SAD4(q, %%mm, 0)                        \
+    DCT_SAD4(q, %%mm, 8)                        \
+    DCT_SAD4(q, %%mm, 64)                       \
+    DCT_SAD4(q, %%mm, 72)                       \
+    "paddusw %%mm1, %%mm0               \n\t"   \
+    HSUM(%%mm0, %%mm1, %0)
+
+#define DCT_SAD_SSE2                            \
+    "pxor    %%xmm0, %%xmm0             \n\t"   \
+    "pxor    %%xmm1, %%xmm1             \n\t"   \
+    DCT_SAD4(dqa, %%xmm, 0)                     \
+    DCT_SAD4(dqa, %%xmm, 64)                    \
+    "paddusw %%xmm1, %%xmm0             \n\t"   \
+    HSUM(%%xmm0, %%xmm1, %0)
+
+#define DCT_SAD_FUNC(cpu)                           \
+static int sum_abs_dctelem_ ## cpu(int16_t *block)  \
+{                                                   \
+    int sum;                                        \
+    __asm__ volatile (                              \
+        DCT_SAD                                     \
+        :"=r"(sum)                                  \
+        :"r"(block));                               \
+    return sum & 0xFFFF;                            \
+}
+
+#define DCT_SAD         DCT_SAD_MMX
+#define HSUM(a, t, dst) HSUM_MMX(a, t, dst)
+#define MMABS(a, z)     MMABS_MMX(a, z)
+DCT_SAD_FUNC(mmx)
+#undef MMABS
+#undef HSUM
+
+#define HSUM(a, t, dst) HSUM_MMXEXT(a, t, dst)
+#define MMABS(a, z)     MMABS_MMXEXT(a, z)
+DCT_SAD_FUNC(mmxext)
+#undef HSUM
+#undef DCT_SAD
+
+#define DCT_SAD         DCT_SAD_SSE2
+#define HSUM(a, t, dst) HSUM_SSE2(a, t, dst)
+DCT_SAD_FUNC(sse2)
+#undef MMABS
+
+#if HAVE_SSSE3_INLINE
+#define MMABS(a, z)     MMABS_SSSE3(a, z)
+DCT_SAD_FUNC(ssse3)
+#undef MMABS
+#endif
+#undef HSUM
+#undef DCT_SAD
+
+
+DECLARE_ASM_CONST(8, uint64_t, round_tab)[3] = {
+    0x0000000000000000ULL,
+    0x0001000100010001ULL,
+    0x0002000200020002ULL,
+};
+
+DECLARE_ASM_CONST(8, uint64_t, bone) = 0x0101010101010101LL;
+
+static inline void sad8_1_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
+{
+    x86_reg len = -(stride * h);
+    __asm__ volatile (
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1, %%"REG_a"), %%mm0    \n\t"
+        "movq (%2, %%"REG_a"), %%mm2    \n\t"
+        "movq (%2, %%"REG_a"), %%mm4    \n\t"
+        "add %3, %%"REG_a"              \n\t"
+        "psubusb %%mm0, %%mm2           \n\t"
+        "psubusb %%mm4, %%mm0           \n\t"
+        "movq (%1, %%"REG_a"), %%mm1    \n\t"
+        "movq (%2, %%"REG_a"), %%mm3    \n\t"
+        "movq (%2, %%"REG_a"), %%mm5    \n\t"
+        "psubusb %%mm1, %%mm3           \n\t"
+        "psubusb %%mm5, %%mm1           \n\t"
+        "por %%mm2, %%mm0               \n\t"
+        "por %%mm1, %%mm3               \n\t"
+        "movq %%mm0, %%mm1              \n\t"
+        "movq %%mm3, %%mm2              \n\t"
+        "punpcklbw %%mm7, %%mm0         \n\t"
+        "punpckhbw %%mm7, %%mm1         \n\t"
+        "punpcklbw %%mm7, %%mm3         \n\t"
+        "punpckhbw %%mm7, %%mm2         \n\t"
+        "paddw %%mm1, %%mm0             \n\t"
+        "paddw %%mm3, %%mm2             \n\t"
+        "paddw %%mm2, %%mm0             \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "add %3, %%"REG_a"              \n\t"
+        " js 1b                         \n\t"
+        : "+a" (len)
+        : "r" (blk1 - len), "r" (blk2 - len), "r" ((x86_reg) stride));
+}
+
+static inline void sad8_1_mmxext(uint8_t *blk1, uint8_t *blk2,
+                                 int stride, int h)
+{
+    __asm__ volatile (
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1), %%mm0               \n\t"
+        "movq (%1, %3), %%mm1           \n\t"
+        "psadbw (%2), %%mm0             \n\t"
+        "psadbw (%2, %3), %%mm1         \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "paddw %%mm1, %%mm6             \n\t"
+        "lea (%1,%3,2), %1              \n\t"
+        "lea (%2,%3,2), %2              \n\t"
+        "sub $2, %0                     \n\t"
+        " jg 1b                         \n\t"
+        : "+r" (h), "+r" (blk1), "+r" (blk2)
+        : "r" ((x86_reg) stride));
+}
+
+static int sad16_sse2(MpegEncContext *v, uint8_t *blk2, uint8_t *blk1,
+                      int stride, int h)
+{
+    int ret;
+    __asm__ volatile (
+        "pxor %%xmm2, %%xmm2            \n\t"
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movdqu (%1), %%xmm0            \n\t"
+        "movdqu (%1, %4), %%xmm1        \n\t"
+        "psadbw (%2), %%xmm0            \n\t"
+        "psadbw (%2, %4), %%xmm1        \n\t"
+        "paddw %%xmm0, %%xmm2           \n\t"
+        "paddw %%xmm1, %%xmm2           \n\t"
+        "lea (%1,%4,2), %1              \n\t"
+        "lea (%2,%4,2), %2              \n\t"
+        "sub $2, %0                     \n\t"
+        " jg 1b                         \n\t"
+        "movhlps %%xmm2, %%xmm0         \n\t"
+        "paddw   %%xmm0, %%xmm2         \n\t"
+        "movd    %%xmm2, %3             \n\t"
+        : "+r" (h), "+r" (blk1), "+r" (blk2), "=r" (ret)
+        : "r" ((x86_reg) stride));
+    return ret;
+}
+
+static inline void sad8_x2a_mmxext(uint8_t *blk1, uint8_t *blk2,
+                                   int stride, int h)
+{
+    __asm__ volatile (
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1), %%mm0               \n\t"
+        "movq (%1, %3), %%mm1           \n\t"
+        "pavgb 1(%1), %%mm0             \n\t"
+        "pavgb 1(%1, %3), %%mm1         \n\t"
+        "psadbw (%2), %%mm0             \n\t"
+        "psadbw (%2, %3), %%mm1         \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "paddw %%mm1, %%mm6             \n\t"
+        "lea (%1,%3,2), %1              \n\t"
+        "lea (%2,%3,2), %2              \n\t"
+        "sub $2, %0                     \n\t"
+        " jg 1b                         \n\t"
+        : "+r" (h), "+r" (blk1), "+r" (blk2)
+        : "r" ((x86_reg) stride));
+}
+
+static inline void sad8_y2a_mmxext(uint8_t *blk1, uint8_t *blk2,
+                                   int stride, int h)
+{
+    __asm__ volatile (
+        "movq (%1), %%mm0               \n\t"
+        "add %3, %1                     \n\t"
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1), %%mm1               \n\t"
+        "movq (%1, %3), %%mm2           \n\t"
+        "pavgb %%mm1, %%mm0             \n\t"
+        "pavgb %%mm2, %%mm1             \n\t"
+        "psadbw (%2), %%mm0             \n\t"
+        "psadbw (%2, %3), %%mm1         \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "paddw %%mm1, %%mm6             \n\t"
+        "movq %%mm2, %%mm0              \n\t"
+        "lea (%1,%3,2), %1              \n\t"
+        "lea (%2,%3,2), %2              \n\t"
+        "sub $2, %0                     \n\t"
+        " jg 1b                         \n\t"
+        : "+r" (h), "+r" (blk1), "+r" (blk2)
+        : "r" ((x86_reg) stride));
+}
+
+static inline void sad8_4_mmxext(uint8_t *blk1, uint8_t *blk2,
+                                 int stride, int h)
+{
+    __asm__ volatile (
+        "movq "MANGLE(bone)", %%mm5     \n\t"
+        "movq (%1), %%mm0               \n\t"
+        "pavgb 1(%1), %%mm0             \n\t"
+        "add %3, %1                     \n\t"
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1), %%mm1               \n\t"
+        "movq (%1,%3), %%mm2            \n\t"
+        "pavgb 1(%1), %%mm1             \n\t"
+        "pavgb 1(%1,%3), %%mm2          \n\t"
+        "psubusb %%mm5, %%mm1           \n\t"
+        "pavgb %%mm1, %%mm0             \n\t"
+        "pavgb %%mm2, %%mm1             \n\t"
+        "psadbw (%2), %%mm0             \n\t"
+        "psadbw (%2,%3), %%mm1          \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "paddw %%mm1, %%mm6             \n\t"
+        "movq %%mm2, %%mm0              \n\t"
+        "lea (%1,%3,2), %1              \n\t"
+        "lea (%2,%3,2), %2              \n\t"
+        "sub $2, %0                     \n\t"
+        " jg 1b                         \n\t"
+        : "+r" (h), "+r" (blk1), "+r" (blk2)
+        : "r" ((x86_reg) stride));
+}
+
+static inline void sad8_2_mmx(uint8_t *blk1a, uint8_t *blk1b, uint8_t *blk2,
+                              int stride, int h)
+{
+    x86_reg len = -(stride * h);
+    __asm__ volatile (
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq (%1, %%"REG_a"), %%mm0    \n\t"
+        "movq (%2, %%"REG_a"), %%mm1    \n\t"
+        "movq (%1, %%"REG_a"), %%mm2    \n\t"
+        "movq (%2, %%"REG_a"), %%mm3    \n\t"
+        "punpcklbw %%mm7, %%mm0         \n\t"
+        "punpcklbw %%mm7, %%mm1         \n\t"
+        "punpckhbw %%mm7, %%mm2         \n\t"
+        "punpckhbw %%mm7, %%mm3         \n\t"
+        "paddw %%mm0, %%mm1             \n\t"
+        "paddw %%mm2, %%mm3             \n\t"
+        "movq (%3, %%"REG_a"), %%mm4    \n\t"
+        "movq (%3, %%"REG_a"), %%mm2    \n\t"
+        "paddw %%mm5, %%mm1             \n\t"
+        "paddw %%mm5, %%mm3             \n\t"
+        "psrlw $1, %%mm1                \n\t"
+        "psrlw $1, %%mm3                \n\t"
+        "packuswb %%mm3, %%mm1          \n\t"
+        "psubusb %%mm1, %%mm4           \n\t"
+        "psubusb %%mm2, %%mm1           \n\t"
+        "por %%mm4, %%mm1               \n\t"
+        "movq %%mm1, %%mm0              \n\t"
+        "punpcklbw %%mm7, %%mm0         \n\t"
+        "punpckhbw %%mm7, %%mm1         \n\t"
+        "paddw %%mm1, %%mm0             \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "add %4, %%"REG_a"              \n\t"
+        " js 1b                         \n\t"
+        : "+a" (len)
+        : "r" (blk1a - len), "r" (blk1b - len), "r" (blk2 - len),
+          "r" ((x86_reg) stride));
+}
+
+static inline void sad8_4_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
+{
+    x86_reg len = -(stride * h);
+    __asm__ volatile (
+        "movq  (%1, %%"REG_a"), %%mm0   \n\t"
+        "movq 1(%1, %%"REG_a"), %%mm2   \n\t"
+        "movq %%mm0, %%mm1              \n\t"
+        "movq %%mm2, %%mm3              \n\t"
+        "punpcklbw %%mm7, %%mm0         \n\t"
+        "punpckhbw %%mm7, %%mm1         \n\t"
+        "punpcklbw %%mm7, %%mm2         \n\t"
+        "punpckhbw %%mm7, %%mm3         \n\t"
+        "paddw %%mm2, %%mm0             \n\t"
+        "paddw %%mm3, %%mm1             \n\t"
+        ".p2align 4                     \n\t"
+        "1:                             \n\t"
+        "movq  (%2, %%"REG_a"), %%mm2   \n\t"
+        "movq 1(%2, %%"REG_a"), %%mm4   \n\t"
+        "movq %%mm2, %%mm3              \n\t"
+        "movq %%mm4, %%mm5              \n\t"
+        "punpcklbw %%mm7, %%mm2         \n\t"
+        "punpckhbw %%mm7, %%mm3         \n\t"
+        "punpcklbw %%mm7, %%mm4         \n\t"
+        "punpckhbw %%mm7, %%mm5         \n\t"
+        "paddw %%mm4, %%mm2             \n\t"
+        "paddw %%mm5, %%mm3             \n\t"
+        "movq 16+"MANGLE(round_tab)", %%mm5 \n\t"
+        "paddw %%mm2, %%mm0             \n\t"
+        "paddw %%mm3, %%mm1             \n\t"
+        "paddw %%mm5, %%mm0             \n\t"
+        "paddw %%mm5, %%mm1             \n\t"
+        "movq (%3, %%"REG_a"), %%mm4    \n\t"
+        "movq (%3, %%"REG_a"), %%mm5    \n\t"
+        "psrlw $2, %%mm0                \n\t"
+        "psrlw $2, %%mm1                \n\t"
+        "packuswb %%mm1, %%mm0          \n\t"
+        "psubusb %%mm0, %%mm4           \n\t"
+        "psubusb %%mm5, %%mm0           \n\t"
+        "por %%mm4, %%mm0               \n\t"
+        "movq %%mm0, %%mm4              \n\t"
+        "punpcklbw %%mm7, %%mm0         \n\t"
+        "punpckhbw %%mm7, %%mm4         \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "paddw %%mm4, %%mm6             \n\t"
+        "movq  %%mm2, %%mm0             \n\t"
+        "movq  %%mm3, %%mm1             \n\t"
+        "add %4, %%"REG_a"              \n\t"
+        " js 1b                         \n\t"
+        : "+a" (len)
+        : "r" (blk1 - len), "r" (blk1 - len + stride), "r" (blk2 - len),
+          "r" ((x86_reg) stride));
+}
+
+static inline int sum_mmx(void)
+{
+    int ret;
+    __asm__ volatile (
+        "movq %%mm6, %%mm0              \n\t"
+        "psrlq $32, %%mm6               \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "movq %%mm6, %%mm0              \n\t"
+        "psrlq $16, %%mm6               \n\t"
+        "paddw %%mm0, %%mm6             \n\t"
+        "movd %%mm6, %0                 \n\t"
+        : "=r" (ret));
+    return ret & 0xFFFF;
+}
+
+static inline int sum_mmxext(void)
+{
+    int ret;
+    __asm__ volatile (
+        "movd %%mm6, %0                 \n\t"
+        : "=r" (ret));
+    return ret;
+}
+
+static inline void sad8_x2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
+{
+    sad8_2_mmx(blk1, blk1 + 1, blk2, stride, h);
+}
+
+static inline void sad8_y2a_mmx(uint8_t *blk1, uint8_t *blk2, int stride, int h)
+{
+    sad8_2_mmx(blk1, blk1 + stride, blk2, stride, h);
+}
+
+#define PIX_SAD(suf)                                                    \
+static int sad8_ ## suf(MpegEncContext *v, uint8_t *blk2,               \
+                        uint8_t *blk1, int stride, int h)               \
+{                                                                       \
+    assert(h == 8);                                                     \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        :);                                                             \
+                                                                        \
+    sad8_1_ ## suf(blk1, blk2, stride, 8);                              \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad8_x2_ ## suf(MpegEncContext *v, uint8_t *blk2,            \
+                           uint8_t *blk1, int stride, int h)            \
+{                                                                       \
+    assert(h == 8);                                                     \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        "movq %0, %%mm5        \n\t"                                    \
+        :: "m" (round_tab[1]));                                         \
+                                                                        \
+    sad8_x2a_ ## suf(blk1, blk2, stride, 8);                            \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad8_y2_ ## suf(MpegEncContext *v, uint8_t *blk2,            \
+                           uint8_t *blk1, int stride, int h)            \
+{                                                                       \
+    assert(h == 8);                                                     \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        "movq %0, %%mm5        \n\t"                                    \
+        :: "m" (round_tab[1]));                                         \
+                                                                        \
+    sad8_y2a_ ## suf(blk1, blk2, stride, 8);                            \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad8_xy2_ ## suf(MpegEncContext *v, uint8_t *blk2,           \
+                            uint8_t *blk1, int stride, int h)           \
+{                                                                       \
+    assert(h == 8);                                                     \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        ::);                                                            \
+                                                                        \
+    sad8_4_ ## suf(blk1, blk2, stride, 8);                              \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad16_ ## suf(MpegEncContext *v, uint8_t *blk2,              \
+                         uint8_t *blk1, int stride, int h)              \
+{                                                                       \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        :);                                                             \
+                                                                        \
+    sad8_1_ ## suf(blk1,     blk2,     stride, h);                      \
+    sad8_1_ ## suf(blk1 + 8, blk2 + 8, stride, h);                      \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad16_x2_ ## suf(MpegEncContext *v, uint8_t *blk2,           \
+                            uint8_t *blk1, int stride, int h)           \
+{                                                                       \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        "movq %0, %%mm5        \n\t"                                    \
+        :: "m" (round_tab[1]));                                         \
+                                                                        \
+    sad8_x2a_ ## suf(blk1,     blk2,     stride, h);                    \
+    sad8_x2a_ ## suf(blk1 + 8, blk2 + 8, stride, h);                    \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad16_y2_ ## suf(MpegEncContext *v, uint8_t *blk2,           \
+                            uint8_t *blk1, int stride, int h)           \
+{                                                                       \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        "movq %0, %%mm5        \n\t"                                    \
+        :: "m" (round_tab[1]));                                         \
+                                                                        \
+    sad8_y2a_ ## suf(blk1,     blk2,     stride, h);                    \
+    sad8_y2a_ ## suf(blk1 + 8, blk2 + 8, stride, h);                    \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+                                                                        \
+static int sad16_xy2_ ## suf(MpegEncContext *v, uint8_t *blk2,          \
+                             uint8_t *blk1, int stride, int h)          \
+{                                                                       \
+    __asm__ volatile (                                                  \
+        "pxor %%mm7, %%mm7     \n\t"                                    \
+        "pxor %%mm6, %%mm6     \n\t"                                    \
+        ::);                                                            \
+                                                                        \
+    sad8_4_ ## suf(blk1,     blk2,     stride, h);                      \
+    sad8_4_ ## suf(blk1 + 8, blk2 + 8, stride, h);                      \
+                                                                        \
+    return sum_ ## suf();                                               \
+}                                                                       \
+
+PIX_SAD(mmx)
+PIX_SAD(mmxext)
+
+#endif /* HAVE_INLINE_ASM */
+
+int ff_sse16_sse2(MpegEncContext *v, uint8_t *pix1, uint8_t *pix2,
+                  int line_size, int h);
+
+#define hadamard_func(cpu)                                              \
+    int ff_hadamard8_diff_ ## cpu(MpegEncContext *s, uint8_t *src1,     \
+                                  uint8_t *src2, int stride, int h);    \
+    int ff_hadamard8_diff16_ ## cpu(MpegEncContext *s, uint8_t *src1,   \
+                                    uint8_t *src2, int stride, int h);
+
+hadamard_func(mmx)
+hadamard_func(mmxext)
+hadamard_func(sse2)
+hadamard_func(ssse3)
+
+av_cold void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+#if HAVE_INLINE_ASM
+    if (INLINE_MMX(cpu_flags)) {
+        c->sum_abs_dctelem = sum_abs_dctelem_mmx;
+
+        c->pix_abs[0][0] = sad16_mmx;
+        c->pix_abs[0][1] = sad16_x2_mmx;
+        c->pix_abs[0][2] = sad16_y2_mmx;
+        c->pix_abs[0][3] = sad16_xy2_mmx;
+        c->pix_abs[1][0] = sad8_mmx;
+        c->pix_abs[1][1] = sad8_x2_mmx;
+        c->pix_abs[1][2] = sad8_y2_mmx;
+        c->pix_abs[1][3] = sad8_xy2_mmx;
+
+        c->sad[0] = sad16_mmx;
+        c->sad[1] = sad8_mmx;
+
+        c->sse[0]  = sse16_mmx;
+        c->sse[1]  = sse8_mmx;
+        c->vsad[4] = vsad_intra16_mmx;
+
+        c->nsse[0] = nsse16_mmx;
+        c->nsse[1] = nsse8_mmx;
+
+        if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
+            c->vsad[0] = vsad16_mmx;
+        }
+    }
+
+    if (INLINE_MMXEXT(cpu_flags)) {
+        c->sum_abs_dctelem = sum_abs_dctelem_mmxext;
+
+        c->vsad[4] = vsad_intra16_mmxext;
+
+        c->pix_abs[0][0] = sad16_mmxext;
+        c->pix_abs[1][0] = sad8_mmxext;
+
+        c->sad[0] = sad16_mmxext;
+        c->sad[1] = sad8_mmxext;
+
+        if (!(avctx->flags & CODEC_FLAG_BITEXACT)) {
+            c->pix_abs[0][1] = sad16_x2_mmxext;
+            c->pix_abs[0][2] = sad16_y2_mmxext;
+            c->pix_abs[0][3] = sad16_xy2_mmxext;
+            c->pix_abs[1][1] = sad8_x2_mmxext;
+            c->pix_abs[1][2] = sad8_y2_mmxext;
+            c->pix_abs[1][3] = sad8_xy2_mmxext;
+
+            c->vsad[0] = vsad16_mmxext;
+        }
+    }
+
+    if (INLINE_SSE2(cpu_flags)) {
+        c->sum_abs_dctelem = sum_abs_dctelem_sse2;
+    }
+
+    if (INLINE_SSE2(cpu_flags) && !(cpu_flags & AV_CPU_FLAG_3DNOW)) {
+        c->sad[0] = sad16_sse2;
+    }
+
+#if HAVE_SSSE3_INLINE
+    if (INLINE_SSSE3(cpu_flags)) {
+        c->sum_abs_dctelem = sum_abs_dctelem_ssse3;
+    }
+#endif
+#endif /* HAVE_INLINE_ASM */
+
+    if (EXTERNAL_MMX(cpu_flags)) {
+        c->hadamard8_diff[0] = ff_hadamard8_diff16_mmx;
+        c->hadamard8_diff[1] = ff_hadamard8_diff_mmx;
+    }
+
+    if (EXTERNAL_MMXEXT(cpu_flags)) {
+        c->hadamard8_diff[0] = ff_hadamard8_diff16_mmxext;
+        c->hadamard8_diff[1] = ff_hadamard8_diff_mmxext;
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        c->sse[0] = ff_sse16_sse2;
+
+#if HAVE_ALIGNED_STACK
+        c->hadamard8_diff[0] = ff_hadamard8_diff16_sse2;
+        c->hadamard8_diff[1] = ff_hadamard8_diff_sse2;
+#endif
+    }
+
+    if (EXTERNAL_SSSE3(cpu_flags) && HAVE_ALIGNED_STACK) {
+        c->hadamard8_diff[0] = ff_hadamard8_diff16_ssse3;
+        c->hadamard8_diff[1] = ff_hadamard8_diff_ssse3;
+    }
+}