LCOV - code coverage report
Current view: top level - src/libavcodec/x86 - lossless_videodsp_init.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 13 13 100.0 %
Date: 2017-01-28 02:43:52 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Lossless video DSP utils
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : #include "config.h"
      22             : #include "libavutil/x86/asm.h"
      23             : #include "../lossless_videodsp.h"
      24             : #include "libavutil/x86/cpu.h"
      25             : 
      26             : void ff_add_bytes_mmx(uint8_t *dst, uint8_t *src, intptr_t w);
      27             : void ff_add_bytes_sse2(uint8_t *dst, uint8_t *src, intptr_t w);
      28             : 
      29             : void ff_add_median_pred_mmxext(uint8_t *dst, const uint8_t *top,
      30             :                                const uint8_t *diff, intptr_t w,
      31             :                                int *left, int *left_top);
      32             : void ff_add_median_pred_sse2(uint8_t *dst, const uint8_t *top,
      33             :                              const uint8_t *diff, intptr_t w,
      34             :                              int *left, int *left_top);
      35             : 
      36             : int  ff_add_left_pred_ssse3(uint8_t *dst, const uint8_t *src,
      37             :                             intptr_t w, int left);
      38             : int  ff_add_left_pred_sse4(uint8_t *dst, const uint8_t *src,
      39             :                             intptr_t w, int left);
      40             : 
      41             : int ff_add_left_pred_int16_ssse3(uint16_t *dst, const uint16_t *src, unsigned mask, int w, unsigned acc);
      42             : int ff_add_left_pred_int16_sse4(uint16_t *dst, const uint16_t *src, unsigned mask, int w, unsigned acc);
      43             : 
      44             : #if HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
      45             : static void add_median_pred_cmov(uint8_t *dst, const uint8_t *top,
      46             :                                  const uint8_t *diff, intptr_t w,
      47             :                                  int *left, int *left_top)
      48             : {
      49             :     x86_reg w2 = -w;
      50             :     x86_reg x;
      51             :     int l  = *left     & 0xff;
      52             :     int tl = *left_top & 0xff;
      53             :     int t;
      54             :     __asm__ volatile (
      55             :         "mov          %7, %3            \n"
      56             :         "1:                             \n"
      57             :         "movzbl (%3, %4), %2            \n"
      58             :         "mov          %2, %k3           \n"
      59             :         "sub         %b1, %b3           \n"
      60             :         "add         %b0, %b3           \n"
      61             :         "mov          %2, %1            \n"
      62             :         "cmp          %0, %2            \n"
      63             :         "cmovg        %0, %2            \n"
      64             :         "cmovg        %1, %0            \n"
      65             :         "cmp         %k3, %0            \n"
      66             :         "cmovg       %k3, %0            \n"
      67             :         "mov          %7, %3            \n"
      68             :         "cmp          %2, %0            \n"
      69             :         "cmovl        %2, %0            \n"
      70             :         "add    (%6, %4), %b0           \n"
      71             :         "mov         %b0, (%5, %4)      \n"
      72             :         "inc          %4                \n"
      73             :         "jl           1b                \n"
      74             :         : "+&q"(l), "+&q"(tl), "=&r"(t), "=&q"(x), "+&r"(w2)
      75             :         : "r"(dst + w), "r"(diff + w), "rm"(top + w)
      76             :     );
      77             :     *left     = l;
      78             :     *left_top = tl;
      79             : }
      80             : #endif
      81             : 
      82         125 : void ff_llviddsp_init_x86(LLVidDSPContext *c)
      83             : {
      84         125 :     int cpu_flags = av_get_cpu_flags();
      85             : 
      86             : #if HAVE_INLINE_ASM && HAVE_7REGS && ARCH_X86_32
      87             :     if (cpu_flags & AV_CPU_FLAG_CMOV)
      88             :         c->add_median_pred = add_median_pred_cmov;
      89             : #endif
      90             : 
      91             :     if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
      92             :         c->add_bytes = ff_add_bytes_mmx;
      93             :     }
      94             : 
      95             :     if (ARCH_X86_32 && EXTERNAL_MMXEXT(cpu_flags)) {
      96             :         /* slower than cmov version on AMD */
      97             :         if (!(cpu_flags & AV_CPU_FLAG_3DNOW))
      98             :             c->add_median_pred = ff_add_median_pred_mmxext;
      99             :     }
     100             : 
     101         125 :     if (EXTERNAL_SSE2(cpu_flags)) {
     102           5 :         c->add_bytes       = ff_add_bytes_sse2;
     103           5 :         c->add_median_pred = ff_add_median_pred_sse2;
     104             :     }
     105             : 
     106         125 :     if (EXTERNAL_SSSE3(cpu_flags)) {
     107           5 :         c->add_left_pred = ff_add_left_pred_ssse3;
     108           5 :         if (cpu_flags & AV_CPU_FLAG_SSE4) // not really SSE4, just slow on Conroe
     109           5 :             c->add_left_pred = ff_add_left_pred_sse4;
     110             : 
     111           5 :         c->add_left_pred_int16 = ff_add_left_pred_int16_ssse3;
     112             :     }
     113             : 
     114         125 :     if (EXTERNAL_SSE4(cpu_flags)) {
     115           5 :         c->add_left_pred_int16 = ff_add_left_pred_int16_sse4;
     116             :     }
     117         125 : }

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