GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/x86/mpegvideoencdsp_init.c Lines: 41 50 82.0 %
Date: 2020-08-14 10:39:37 Branches: 20 30 66.7 %

Line Branch Exec Source
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/*
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "libavutil/attributes.h"
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#include "libavutil/avassert.h"
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#include "libavutil/cpu.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/mpegvideoencdsp.h"
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int ff_pix_sum16_mmx(uint8_t *pix, int line_size);
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int ff_pix_sum16_mmxext(uint8_t *pix, int line_size);
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int ff_pix_sum16_sse2(uint8_t *pix, int line_size);
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int ff_pix_sum16_xop(uint8_t *pix, int line_size);
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int ff_pix_norm1_mmx(uint8_t *pix, int line_size);
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int ff_pix_norm1_sse2(uint8_t *pix, int line_size);
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#if HAVE_INLINE_ASM
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#define PHADDD(a, t)                            \
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    "movq  " #a ", " #t "               \n\t"   \
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    "psrlq    $32, " #a "               \n\t"   \
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    "paddd " #t ", " #a "               \n\t"
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/*
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 * pmulhw:   dst[0 - 15] = (src[0 - 15] * dst[0 - 15])[16 - 31]
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 * pmulhrw:  dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x8000)[16 - 31]
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 * pmulhrsw: dst[0 - 15] = (src[0 - 15] * dst[0 - 15] + 0x4000)[15 - 30]
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 */
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#define PMULHRW(x, y, s, o)                     \
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    "pmulhw " #s ", " #x "              \n\t"   \
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    "pmulhw " #s ", " #y "              \n\t"   \
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    "paddw  " #o ", " #x "              \n\t"   \
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    "paddw  " #o ", " #y "              \n\t"   \
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    "psraw      $1, " #x "              \n\t"   \
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    "psraw      $1, " #y "              \n\t"
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#define DEF(x) x ## _mmx
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#define SET_RND MOVQ_WONE
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#define SCALE_OFFSET 1
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#define DEF(x) x ## _3dnow
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#define SET_RND(x)
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#define SCALE_OFFSET 0
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#define PMULHRW(x, y, s, o)                     \
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    "pmulhrw " #s ", " #x "             \n\t"   \
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    "pmulhrw " #s ", " #y "             \n\t"
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#if HAVE_SSSE3_INLINE
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#undef PHADDD
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#define DEF(x) x ## _ssse3
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#define SET_RND(x)
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#define SCALE_OFFSET -1
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#define PHADDD(a, t)                            \
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    "pshufw $0x0E, " #a ", " #t "       \n\t"   \
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    /* faster than phaddd on core2 */           \
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    "paddd " #t ", " #a "               \n\t"
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#define PMULHRW(x, y, s, o)                     \
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    "pmulhrsw " #s ", " #x "            \n\t"   \
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    "pmulhrsw " #s ", " #y "            \n\t"
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#include "mpegvideoenc_qns_template.c"
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#undef DEF
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#undef SET_RND
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#undef SCALE_OFFSET
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#undef PMULHRW
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#undef PHADDD
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#endif /* HAVE_SSSE3_INLINE */
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/* Draw the edges of width 'w' of an image of size width, height
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 * this MMX version can only handle w == 8 || w == 16. */
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420
static void draw_edges_mmx(uint8_t *buf, int wrap, int width, int height,
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                           int w, int h, int sides)
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{
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    uint8_t *ptr, *last_line;
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    int i;
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420
    last_line = buf + (height - 1) * wrap;
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    /* left and right */
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420
    ptr = buf;
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420
    if (w == 8) {
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280
        __asm__ volatile (
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            "1:                             \n\t"
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            "movd            (%0), %%mm0    \n\t"
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            "punpcklbw      %%mm0, %%mm0    \n\t"
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            "punpcklwd      %%mm0, %%mm0    \n\t"
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            "punpckldq      %%mm0, %%mm0    \n\t"
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            "movq           %%mm0, -8(%0)   \n\t"
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            "movq      -8(%0, %2), %%mm1    \n\t"
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            "punpckhbw      %%mm1, %%mm1    \n\t"
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            "punpckhwd      %%mm1, %%mm1    \n\t"
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            "punpckhdq      %%mm1, %%mm1    \n\t"
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            "movq           %%mm1, (%0, %2) \n\t"
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            "add               %1, %0       \n\t"
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            "cmp               %3, %0       \n\t"
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            "jb                1b           \n\t"
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            : "+r" (ptr)
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280
            : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
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              "r" (ptr + wrap * height));
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140
    } else if (w == 16) {
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        __asm__ volatile (
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            "1:                                 \n\t"
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            "movd            (%0), %%mm0        \n\t"
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            "punpcklbw      %%mm0, %%mm0        \n\t"
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            "punpcklwd      %%mm0, %%mm0        \n\t"
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            "punpckldq      %%mm0, %%mm0        \n\t"
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            "movq           %%mm0, -8(%0)       \n\t"
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            "movq           %%mm0, -16(%0)      \n\t"
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            "movq      -8(%0, %2), %%mm1        \n\t"
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            "punpckhbw      %%mm1, %%mm1        \n\t"
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            "punpckhwd      %%mm1, %%mm1        \n\t"
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            "punpckhdq      %%mm1, %%mm1        \n\t"
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            "movq           %%mm1,  (%0, %2)    \n\t"
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            "movq           %%mm1, 8(%0, %2)    \n\t"
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            "add               %1, %0           \n\t"
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            "cmp               %3, %0           \n\t"
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            "jb                1b               \n\t"
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            : "+r"(ptr)
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            : "r"((x86_reg)wrap), "r"((x86_reg)width), "r"(ptr + wrap * height)
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            );
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    } else {
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        av_assert1(w == 4);
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        __asm__ volatile (
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            "1:                             \n\t"
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            "movd            (%0), %%mm0    \n\t"
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            "punpcklbw      %%mm0, %%mm0    \n\t"
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            "punpcklwd      %%mm0, %%mm0    \n\t"
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            "movd           %%mm0, -4(%0)   \n\t"
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            "movd      -4(%0, %2), %%mm1    \n\t"
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            "punpcklbw      %%mm1, %%mm1    \n\t"
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            "punpckhwd      %%mm1, %%mm1    \n\t"
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            "punpckhdq      %%mm1, %%mm1    \n\t"
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            "movd           %%mm1, (%0, %2) \n\t"
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            "add               %1, %0       \n\t"
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            "cmp               %3, %0       \n\t"
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            "jb                1b           \n\t"
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            : "+r" (ptr)
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            : "r" ((x86_reg) wrap), "r" ((x86_reg) width),
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              "r" (ptr + wrap * height));
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    }
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    /* top and bottom (and hopefully also the corners) */
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420
    if (sides & EDGE_TOP) {
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1540
        for (i = 0; i < h; i += 4) {
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1120
            ptr = buf - (i + 1) * wrap - w;
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1120
            __asm__ volatile (
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                "1:                             \n\t"
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                "movq (%1, %0), %%mm0           \n\t"
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                "movq    %%mm0, (%0)            \n\t"
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                "movq    %%mm0, (%0, %2)        \n\t"
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                "movq    %%mm0, (%0, %2, 2)     \n\t"
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                "movq    %%mm0, (%0, %3)        \n\t"
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                "add        $8, %0              \n\t"
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                "cmp        %4, %0              \n\t"
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                "jb         1b                  \n\t"
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                : "+r" (ptr)
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1120
                : "r" ((x86_reg) buf - (x86_reg) ptr - w),
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1120
                  "r" ((x86_reg) - wrap), "r" ((x86_reg) - wrap * 3),
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1120
                  "r" (ptr + width + 2 * w));
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        }
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    }
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420
    if (sides & EDGE_BOTTOM) {
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1540
        for (i = 0; i < h; i += 4) {
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1120
            ptr = last_line + (i + 1) * wrap - w;
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1120
            __asm__ volatile (
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                "1:                             \n\t"
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                "movq (%1, %0), %%mm0           \n\t"
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                "movq    %%mm0, (%0)            \n\t"
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                "movq    %%mm0, (%0, %2)        \n\t"
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                "movq    %%mm0, (%0, %2, 2)     \n\t"
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                "movq    %%mm0, (%0, %3)        \n\t"
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                "add        $8, %0              \n\t"
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                "cmp        %4, %0              \n\t"
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                "jb         1b                  \n\t"
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                : "+r" (ptr)
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1120
                : "r" ((x86_reg) last_line - (x86_reg) ptr - w),
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1120
                  "r" ((x86_reg) wrap), "r" ((x86_reg) wrap * 3),
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1120
                  "r" (ptr + width + 2 * w));
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        }
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    }
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420
}
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c,
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                                         AVCodecContext *avctx)
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{
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340
    int cpu_flags = av_get_cpu_flags();
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#if ARCH_X86_32
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    if (EXTERNAL_MMX(cpu_flags)) {
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        c->pix_sum   = ff_pix_sum16_mmx;
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        c->pix_norm1 = ff_pix_norm1_mmx;
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    }
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    if (EXTERNAL_MMXEXT(cpu_flags)) {
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        c->pix_sum     = ff_pix_sum16_mmxext;
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    }
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#endif
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    if (EXTERNAL_SSE2(cpu_flags)) {
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1
        c->pix_sum     = ff_pix_sum16_sse2;
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1
        c->pix_norm1   = ff_pix_norm1_sse2;
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    }
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    if (EXTERNAL_XOP(cpu_flags)) {
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        c->pix_sum     = ff_pix_sum16_xop;
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    }
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#if HAVE_INLINE_ASM
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340
    if (INLINE_MMX(cpu_flags)) {
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1
        if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT)) {
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            c->try_8x8basis = try_8x8basis_mmx;
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        }
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1
        c->add_8x8basis = add_8x8basis_mmx;
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1
        if (avctx->bits_per_raw_sample <= 8) {
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1
            c->draw_edges = draw_edges_mmx;
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        }
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    }
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340
    if (INLINE_AMD3DNOW(cpu_flags)) {
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        if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT)) {
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            c->try_8x8basis = try_8x8basis_3dnow;
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        }
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        c->add_8x8basis = add_8x8basis_3dnow;
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    }
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#if HAVE_SSSE3_INLINE
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340
    if (INLINE_SSSE3(cpu_flags)) {
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1
        if (!(avctx->flags & AV_CODEC_FLAG_BITEXACT)) {
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            c->try_8x8basis = try_8x8basis_ssse3;
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        }
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1
        c->add_8x8basis = add_8x8basis_ssse3;
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    }
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_INLINE_ASM */
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}