LCOV - code coverage report
Current view: top level - libswscale - hscale_fast_bilinear.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 22 0.0 %
Date: 2017-10-24 00:14:43 Functions: 0 2 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
       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 "swscale_internal.h"
      22             : 
      23           0 : void ff_hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
      24             :                            const uint8_t *src, int srcW, int xInc)
      25             : {
      26             :     int i;
      27           0 :     unsigned int xpos = 0;
      28           0 :     for (i = 0; i < dstWidth; i++) {
      29           0 :         register unsigned int xx     = xpos >> 16;
      30           0 :         register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
      31           0 :         dst[i] = (src[xx] << 7) + (src[xx + 1] - src[xx]) * xalpha;
      32           0 :         xpos  += xInc;
      33             :     }
      34           0 :     for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--)
      35           0 :         dst[i] = src[srcW-1]*128;
      36           0 : }
      37             : 
      38           0 : void ff_hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
      39             :                            int dstWidth, const uint8_t *src1,
      40             :                            const uint8_t *src2, int srcW, int xInc)
      41             : {
      42             :     int i;
      43           0 :     unsigned int xpos = 0;
      44           0 :     for (i = 0; i < dstWidth; i++) {
      45           0 :         register unsigned int xx     = xpos >> 16;
      46           0 :         register unsigned int xalpha = (xpos & 0xFFFF) >> 9;
      47           0 :         dst1[i] = (src1[xx] * (xalpha ^ 127) + src1[xx + 1] * xalpha);
      48           0 :         dst2[i] = (src2[xx] * (xalpha ^ 127) + src2[xx + 1] * xalpha);
      49           0 :         xpos   += xInc;
      50             :     }
      51           0 :     for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) {
      52           0 :         dst1[i] = src1[srcW-1]*128;
      53           0 :         dst2[i] = src2[srcW-1]*128;
      54             :     }
      55           0 : }

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