LCOV - code coverage report
Current view: top level - libavutil - pixelutils.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 19 21 90.5 %
Date: 2017-12-15 02:19:58 Functions: 6 6 100.0 %

          Line data    Source code
       1             : /*
       2             :  * This file is part of FFmpeg.
       3             :  *
       4             :  * FFmpeg is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Lesser General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2.1 of the License, or (at your option) any later version.
       8             :  *
       9             :  * FFmpeg is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Lesser General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public
      15             :  * License along with FFmpeg; if not, write to the Free Software
      16             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      17             :  */
      18             : 
      19             : #include "config.h"
      20             : #include "common.h"
      21             : #include "pixelutils.h"
      22             : #include "internal.h"
      23             : 
      24             : #if CONFIG_PIXELUTILS
      25             : 
      26             : #include "x86/pixelutils.h"
      27             : 
      28       77715 : static av_always_inline int sad_wxh(const uint8_t *src1, ptrdiff_t stride1,
      29             :                                     const uint8_t *src2, ptrdiff_t stride2,
      30             :                                     int w, int h)
      31             : {
      32       77715 :     int x, y, sum = 0;
      33             : 
      34      699291 :     for (y = 0; y < h; y++) {
      35     5595048 :         for (x = 0; x < w; x++)
      36     4973472 :             sum += abs(src1[x] - src2[x]);
      37      621576 :         src1 += stride1;
      38      621576 :         src2 += stride2;
      39             :     }
      40       77715 :     return sum;
      41             : }
      42             : 
      43             : #define DECLARE_BLOCK_FUNCTIONS(size)                                               \
      44             : static int block_sad_##size##x##size##_c(const uint8_t *src1, ptrdiff_t stride1,    \
      45             :                                          const uint8_t *src2, ptrdiff_t stride2)    \
      46             : {                                                                                   \
      47             :     return sad_wxh(src1, stride1, src2, stride2, size, size);                       \
      48             : }
      49             : 
      50          24 : DECLARE_BLOCK_FUNCTIONS(2)
      51          24 : DECLARE_BLOCK_FUNCTIONS(4)
      52       77655 : DECLARE_BLOCK_FUNCTIONS(8)
      53          12 : DECLARE_BLOCK_FUNCTIONS(16)
      54             : 
      55             : static const av_pixelutils_sad_fn sad_c[] = {
      56             :     block_sad_2x2_c,
      57             :     block_sad_4x4_c,
      58             :     block_sad_8x8_c,
      59             :     block_sad_16x16_c,
      60             : };
      61             : 
      62             : #endif /* CONFIG_PIXELUTILS */
      63             : 
      64          53 : av_pixelutils_sad_fn av_pixelutils_get_sad_fn(int w_bits, int h_bits, int aligned, void *log_ctx)
      65             : {
      66             : #if !CONFIG_PIXELUTILS
      67             :     av_log(log_ctx, AV_LOG_ERROR, "pixelutils support is required "
      68             :            "but libavutil is not compiled with it\n");
      69             :     return NULL;
      70             : #else
      71             :     av_pixelutils_sad_fn sad[FF_ARRAY_ELEMS(sad_c)];
      72             : 
      73          53 :     memcpy(sad, sad_c, sizeof(sad));
      74             : 
      75          53 :     if (w_bits < 1 || w_bits > FF_ARRAY_ELEMS(sad) ||
      76          53 :         h_bits < 1 || h_bits > FF_ARRAY_ELEMS(sad))
      77           0 :         return NULL;
      78          53 :     if (w_bits != h_bits) // only squared sad for now
      79           0 :         return NULL;
      80             : 
      81             : #if ARCH_X86
      82          53 :     ff_pixelutils_sad_init_x86(sad, aligned);
      83             : #endif
      84             : 
      85          53 :     return sad[w_bits - 1];
      86             : #endif
      87             : }

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