LCOV - code coverage report
Current view: top level - libavcodec - vc1_pred.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 7 7 100.0 %
Date: 2017-12-14 08:27:08 Functions: 1 1 100.0 %

          Line data    Source code
       1             : /*
       2             :  * VC-1 and WMV3 decoder
       3             :  * Copyright (c) 2006-2007 Konstantin Shishkov
       4             :  * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer
       5             :  *
       6             :  * This file is part of FFmpeg.
       7             :  *
       8             :  * FFmpeg is free software; you can redistribute it and/or
       9             :  * modify it under the terms of the GNU Lesser General Public
      10             :  * License as published by the Free Software Foundation; either
      11             :  * version 2.1 of the License, or (at your option) any later version.
      12             :  *
      13             :  * FFmpeg is distributed in the hope that it will be useful,
      14             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      15             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      16             :  * Lesser General Public License for more details.
      17             :  *
      18             :  * You should have received a copy of the GNU Lesser General Public
      19             :  * License along with FFmpeg; if not, write to the Free Software
      20             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      21             :  */
      22             : 
      23             : #ifndef AVCODEC_VC1_PRED_H
      24             : #define AVCODEC_VC1_PRED_H
      25             : 
      26             : #include "vc1.h"
      27             : #include "vc1data.h"
      28             : 
      29             : void ff_vc1_pred_mv(VC1Context *v, int n, int dmv_x, int dmv_y,
      30             :                     int mv1, int r_x, int r_y, uint8_t* is_intra,
      31             :                     int pred_flag, int dir);
      32             : void ff_vc1_pred_mv_intfr(VC1Context *v, int n, int dmv_x, int dmv_y,
      33             :                           int mvn, int r_x, int r_y, uint8_t* is_intra,
      34             :                           int dir);
      35             : void ff_vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2],
      36             :                       int direct, int mvtype);
      37             : void ff_vc1_pred_b_mv_intfi(VC1Context *v, int n, int *dmv_x, int *dmv_y,
      38             :                             int mv1, int *pred_flag);
      39             : 
      40       95276 : static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs)
      41             : {
      42       95276 :     int n = bfrac;
      43             : 
      44             : #if B_FRACTION_DEN==256
      45       95276 :     if (inv)
      46       47638 :         n -= 256;
      47       95276 :     if (!qs)
      48        8104 :         return 2 * ((value * n + 255) >> 9);
      49       87172 :     return (value * n + 128) >> 8;
      50             : #else
      51             :     if (inv)
      52             :         n -= B_FRACTION_DEN;
      53             :     if (!qs)
      54             :         return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN));
      55             :     return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN;
      56             : #endif
      57             : }
      58             : 
      59             : #endif /* AVCODEC_VC1_PRED_H */

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