GCC Code Coverage Report
Directory: ../../../ffmpeg/ Exec Total Coverage
File: src/libavcodec/x86/mpegvideoenc.c Lines: 4 29 13.8 %
Date: 2020-09-25 14:59:26 Branches: 2 12 16.7 %

Line Branch Exec Source
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/*
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 * The simplest mpeg encoder (well, it was the simplest!)
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 * Copyright (c) 2000,2001 Fabrice Bellard
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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/cpu.h"
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#include "libavutil/x86/asm.h"
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#include "libavutil/x86/cpu.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/dct.h"
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#include "libavcodec/mpegvideo.h"
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/* not permutated inverse zigzag_direct + 1 for MMX quantizer */
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DECLARE_ALIGNED(16, static const uint16_t, inv_zigzag_direct16)[64] = {
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    1,  2,  6,  7,  15, 16, 28, 29,
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    3,  5,  8,  14, 17, 27, 30, 43,
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    4,  9,  13, 18, 26, 31, 42, 44,
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    10, 12, 19, 25, 32, 41, 45, 54,
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    11, 20, 24, 33, 40, 46, 53, 55,
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    21, 23, 34, 39, 47, 52, 56, 61,
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    22, 35, 38, 48, 51, 57, 60, 62,
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    36, 37, 49, 50, 58, 59, 63, 64,
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};
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#if HAVE_6REGS
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#if HAVE_MMX_INLINE
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#define COMPILE_TEMPLATE_MMXEXT 0
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#define COMPILE_TEMPLATE_SSE2   0
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#define COMPILE_TEMPLATE_SSSE3  0
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#define RENAME(a)      a ## _mmx
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#define RENAME_FDCT(a) a ## _mmx
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_MMX_INLINE */
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#if HAVE_MMXEXT_INLINE
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#undef COMPILE_TEMPLATE_SSSE3
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_MMXEXT
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#define COMPILE_TEMPLATE_MMXEXT 1
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#define COMPILE_TEMPLATE_SSE2   0
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#define COMPILE_TEMPLATE_SSSE3  0
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#undef RENAME
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#undef RENAME_FDCT
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#define RENAME(a)      a ## _mmxext
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#define RENAME_FDCT(a) a ## _mmxext
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_MMXEXT_INLINE */
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#if HAVE_SSE2_INLINE
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#undef COMPILE_TEMPLATE_MMXEXT
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_SSSE3
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#define COMPILE_TEMPLATE_MMXEXT 0
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#define COMPILE_TEMPLATE_SSE2   1
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#define COMPILE_TEMPLATE_SSSE3  0
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#undef RENAME
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#undef RENAME_FDCT
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#define RENAME(a)      a ## _sse2
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#define RENAME_FDCT(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_SSE2_INLINE */
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#if HAVE_SSSE3_INLINE
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#undef COMPILE_TEMPLATE_MMXEXT
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#undef COMPILE_TEMPLATE_SSE2
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#undef COMPILE_TEMPLATE_SSSE3
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#define COMPILE_TEMPLATE_MMXEXT 0
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#define COMPILE_TEMPLATE_SSE2   1
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#define COMPILE_TEMPLATE_SSSE3  1
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#undef RENAME
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#undef RENAME_FDCT
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#define RENAME(a)      a ## _ssse3
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#define RENAME_FDCT(a) a ## _sse2
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#include "mpegvideoenc_template.c"
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#endif /* HAVE_SSSE3_INLINE */
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#endif /* HAVE_6REGS */
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#if HAVE_INLINE_ASM
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#if HAVE_MMX_INLINE
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static void  denoise_dct_mmx(MpegEncContext *s, int16_t *block){
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    const int intra= s->mb_intra;
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    int *sum= s->dct_error_sum[intra];
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    uint16_t *offset= s->dct_offset[intra];
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    s->dct_count[intra]++;
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    __asm__ volatile(
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        "pxor %%mm7, %%mm7                      \n\t"
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        "1:                                     \n\t"
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        "pxor %%mm0, %%mm0                      \n\t"
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        "pxor %%mm1, %%mm1                      \n\t"
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        "movq (%0), %%mm2                       \n\t"
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        "movq 8(%0), %%mm3                      \n\t"
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        "pcmpgtw %%mm2, %%mm0                   \n\t"
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        "pcmpgtw %%mm3, %%mm1                   \n\t"
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        "pxor %%mm0, %%mm2                      \n\t"
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        "pxor %%mm1, %%mm3                      \n\t"
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        "psubw %%mm0, %%mm2                     \n\t"
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        "psubw %%mm1, %%mm3                     \n\t"
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        "movq %%mm2, %%mm4                      \n\t"
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        "movq %%mm3, %%mm5                      \n\t"
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        "psubusw (%2), %%mm2                    \n\t"
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        "psubusw 8(%2), %%mm3                   \n\t"
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        "pxor %%mm0, %%mm2                      \n\t"
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        "pxor %%mm1, %%mm3                      \n\t"
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        "psubw %%mm0, %%mm2                     \n\t"
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        "psubw %%mm1, %%mm3                     \n\t"
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        "movq %%mm2, (%0)                       \n\t"
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        "movq %%mm3, 8(%0)                      \n\t"
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        "movq %%mm4, %%mm2                      \n\t"
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        "movq %%mm5, %%mm3                      \n\t"
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        "punpcklwd %%mm7, %%mm4                 \n\t"
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        "punpckhwd %%mm7, %%mm2                 \n\t"
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        "punpcklwd %%mm7, %%mm5                 \n\t"
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        "punpckhwd %%mm7, %%mm3                 \n\t"
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        "paddd (%1), %%mm4                      \n\t"
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        "paddd 8(%1), %%mm2                     \n\t"
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        "paddd 16(%1), %%mm5                    \n\t"
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        "paddd 24(%1), %%mm3                    \n\t"
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        "movq %%mm4, (%1)                       \n\t"
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        "movq %%mm2, 8(%1)                      \n\t"
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        "movq %%mm5, 16(%1)                     \n\t"
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        "movq %%mm3, 24(%1)                     \n\t"
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        "add $16, %0                            \n\t"
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        "add $32, %1                            \n\t"
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        "add $16, %2                            \n\t"
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        "cmp %3, %0                             \n\t"
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            " jb 1b                             \n\t"
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        : "+r" (block), "+r" (sum), "+r" (offset)
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        : "r"(block+64)
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    );
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}
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#endif /* HAVE_MMX_INLINE */
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#if HAVE_SSE2_INLINE
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static void  denoise_dct_sse2(MpegEncContext *s, int16_t *block){
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    const int intra= s->mb_intra;
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    int *sum= s->dct_error_sum[intra];
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    uint16_t *offset= s->dct_offset[intra];
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    s->dct_count[intra]++;
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    __asm__ volatile(
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        "pxor %%xmm7, %%xmm7                    \n\t"
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        "1:                                     \n\t"
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        "pxor %%xmm0, %%xmm0                    \n\t"
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        "pxor %%xmm1, %%xmm1                    \n\t"
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        "movdqa (%0), %%xmm2                    \n\t"
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        "movdqa 16(%0), %%xmm3                  \n\t"
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        "pcmpgtw %%xmm2, %%xmm0                 \n\t"
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        "pcmpgtw %%xmm3, %%xmm1                 \n\t"
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        "pxor %%xmm0, %%xmm2                    \n\t"
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        "pxor %%xmm1, %%xmm3                    \n\t"
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        "psubw %%xmm0, %%xmm2                   \n\t"
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        "psubw %%xmm1, %%xmm3                   \n\t"
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        "movdqa %%xmm2, %%xmm4                  \n\t"
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        "movdqa %%xmm3, %%xmm5                  \n\t"
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        "psubusw (%2), %%xmm2                   \n\t"
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        "psubusw 16(%2), %%xmm3                 \n\t"
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        "pxor %%xmm0, %%xmm2                    \n\t"
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        "pxor %%xmm1, %%xmm3                    \n\t"
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        "psubw %%xmm0, %%xmm2                   \n\t"
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        "psubw %%xmm1, %%xmm3                   \n\t"
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        "movdqa %%xmm2, (%0)                    \n\t"
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        "movdqa %%xmm3, 16(%0)                  \n\t"
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        "movdqa %%xmm4, %%xmm6                  \n\t"
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        "movdqa %%xmm5, %%xmm0                  \n\t"
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        "punpcklwd %%xmm7, %%xmm4               \n\t"
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        "punpckhwd %%xmm7, %%xmm6               \n\t"
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        "punpcklwd %%xmm7, %%xmm5               \n\t"
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        "punpckhwd %%xmm7, %%xmm0               \n\t"
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        "paddd (%1), %%xmm4                     \n\t"
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        "paddd 16(%1), %%xmm6                   \n\t"
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        "paddd 32(%1), %%xmm5                   \n\t"
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        "paddd 48(%1), %%xmm0                   \n\t"
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        "movdqa %%xmm4, (%1)                    \n\t"
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        "movdqa %%xmm6, 16(%1)                  \n\t"
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        "movdqa %%xmm5, 32(%1)                  \n\t"
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        "movdqa %%xmm0, 48(%1)                  \n\t"
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        "add $32, %0                            \n\t"
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        "add $64, %1                            \n\t"
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        "add $32, %2                            \n\t"
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        "cmp %3, %0                             \n\t"
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            " jb 1b                             \n\t"
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        : "+r" (block), "+r" (sum), "+r" (offset)
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        : "r"(block+64)
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          XMM_CLOBBERS_ONLY("%xmm0", "%xmm1", "%xmm2", "%xmm3",
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                            "%xmm4", "%xmm5", "%xmm6", "%xmm7")
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    );
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}
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#endif /* HAVE_SSE2_INLINE */
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#endif /* HAVE_INLINE_ASM */
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av_cold void ff_dct_encode_init_x86(MpegEncContext *s)
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{
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    const int dct_algo = s->avctx->dct_algo;
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    if (dct_algo == FF_DCT_AUTO || dct_algo == FF_DCT_MMX) {
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#if HAVE_MMX_INLINE
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        int cpu_flags = av_get_cpu_flags();
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        if (INLINE_MMX(cpu_flags)) {
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#if HAVE_6REGS
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            s->dct_quantize = dct_quantize_mmx;
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#endif
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            s->denoise_dct  = denoise_dct_mmx;
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        }
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#endif
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#if HAVE_6REGS && HAVE_MMXEXT_INLINE
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        if (INLINE_MMXEXT(cpu_flags))
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            s->dct_quantize = dct_quantize_mmxext;
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#endif
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#if HAVE_SSE2_INLINE
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        if (INLINE_SSE2(cpu_flags)) {
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#if HAVE_6REGS
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            s->dct_quantize = dct_quantize_sse2;
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#endif
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            s->denoise_dct  = denoise_dct_sse2;
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        }
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#endif
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#if HAVE_6REGS && HAVE_SSSE3_INLINE
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        if (INLINE_SSSE3(cpu_flags))
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            s->dct_quantize = dct_quantize_ssse3;
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#endif
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    }
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}