LCOV - code coverage report
Current view: top level - libavfilter - colorspacedsp_yuv2yuv_template.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 38 38 100.0 %
Date: 2017-12-15 11:05:35 Functions: 27 27 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2016 Ronald S. Bultje <rsbultje@gmail.com>
       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 "libavutil/avassert.h"
      22             : 
      23             : #undef opixel
      24             : #define opixel pixel
      25             : 
      26             : #undef ipixel
      27             : #if IN_BIT_DEPTH == 8
      28             : #define ipixel uint8_t
      29             : #else
      30             : #define ipixel uint16_t
      31             : #endif
      32             : 
      33             : #undef fn
      34             : #undef fn2
      35             : #undef fn3
      36             : #define fn3(a,b,c,d) a##_##d##p##b##to##c##_c
      37             : #define fn2(a,b,c,d) fn3(a,b,c,d)
      38             : #define fn(a) fn2(a, IN_BIT_DEPTH, OUT_BIT_DEPTH, ss)
      39             : 
      40          81 : static void fn(yuv2yuv)(uint8_t *_dst[3], const ptrdiff_t dst_stride[3],
      41             :                         uint8_t *_src[3], const ptrdiff_t src_stride[3],
      42             :                         int w, int h, const int16_t c[3][3][8],
      43             :                         const int16_t yuv_offset[2][8])
      44             : {
      45          81 :     opixel **dst = (opixel **) _dst;
      46          81 :     ipixel **src = (ipixel **) _src;
      47          81 :     const ipixel *src0 = src[0], *src1 = src[1], *src2 = src[2];
      48          81 :     opixel *dst0 = dst[0], *dst1 = dst[1], *dst2 = dst[2];
      49             :     int y, x;
      50          81 :     const int sh = 14 + IN_BIT_DEPTH - OUT_BIT_DEPTH;
      51          81 :     const int rnd = 1 << (sh - 1);
      52          81 :     int y_off_in = yuv_offset[0][0];
      53          81 :     int y_off_out = yuv_offset[1][0] << sh;
      54          81 :     const int uv_off_in = 128 << (IN_BIT_DEPTH - 8);
      55          81 :     const int uv_off_out = rnd + (128 << (OUT_BIT_DEPTH - 8 + sh));
      56          81 :     int cyy = c[0][0][0], cyu = c[0][1][0], cyv = c[0][2][0];
      57          81 :     int cuu = c[1][1][0], cuv = c[1][2][0], cvu = c[2][1][0], cvv = c[2][2][0];
      58             : 
      59             :     av_assert2(c[1][0][0] == 0);
      60             :     av_assert2(c[2][0][0] == 0);
      61          81 :     w = AV_CEIL_RSHIFT(w, SS_W);
      62          81 :     h = AV_CEIL_RSHIFT(h, SS_H);
      63        4401 :     for (y = 0; y < h; y++) {
      64      197856 :         for (x = 0; x < w; x++) {
      65      193536 :             int y00 = src0[x << SS_W] - y_off_in;
      66             : #if SS_W == 1
      67       82944 :             int y01 = src0[2 * x + 1] - y_off_in;
      68             : #if SS_H == 1
      69       27648 :             int y10 = src0[src_stride[0] / sizeof(ipixel) + 2 * x] - y_off_in;
      70       27648 :             int y11 = src0[src_stride[0] / sizeof(ipixel) + 2 * x + 1] - y_off_in;
      71             : #endif
      72             : #endif
      73      193536 :             int u = src1[x] - uv_off_in, v = src2[x] - uv_off_in;
      74      193536 :             int uv_val = cyu * u + cyv * v + rnd + y_off_out;
      75             : 
      76      193536 :             dst0[x << SS_W] = av_clip_pixel((cyy * y00 + uv_val) >> sh);
      77             : #if SS_W == 1
      78       82944 :             dst0[x * 2 + 1] = av_clip_pixel((cyy * y01 + uv_val) >> sh);
      79             : #if SS_H == 1
      80       36864 :             dst0[x * 2 + 0 + dst_stride[0] / sizeof(opixel)] =
      81       36864 :                               av_clip_pixel((cyy * y10 + uv_val) >> sh);
      82       36864 :             dst0[x * 2 + 1 + dst_stride[0] / sizeof(opixel)] =
      83       36864 :                               av_clip_pixel((cyy * y11 + uv_val) >> sh);
      84             : #endif
      85             : #endif
      86             : 
      87      193536 :             dst1[x] = av_clip_pixel((u * cuu + v * cuv + uv_off_out) >> sh);
      88      193536 :             dst2[x] = av_clip_pixel((u * cvu + v * cvv + uv_off_out) >> sh);
      89             :         }
      90             : 
      91        4320 :         dst0 += (dst_stride[0] * (1 << SS_H)) / sizeof(opixel);
      92        4320 :         dst1 += dst_stride[1] / sizeof(opixel);
      93        4320 :         dst2 += dst_stride[2] / sizeof(opixel);
      94        4320 :         src0 += (src_stride[0] * (1 << SS_H)) / sizeof(ipixel);
      95        4320 :         src1 += src_stride[1] / sizeof(ipixel);
      96        4320 :         src2 += src_stride[2] / sizeof(ipixel);
      97             :     }
      98          81 : }

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