LCOV - code coverage report
Current view: top level - libavcodec - ttaencdsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 25 25 100.0 %
Date: 2017-12-11 04:34:20 Functions: 2 2 100.0 %

          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 "libavutil/attributes.h"
      20             : #include "ttaencdsp.h"
      21             : #include "config.h"
      22             : 
      23      617400 : static void ttaenc_filter_process_c(int32_t *qm, int32_t *dx, int32_t *dl,
      24             :                                     int32_t *error, int32_t *in, int32_t shift,
      25             :                                     int32_t round) {
      26      617400 :     if (*error < 0) {
      27      222560 :         qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
      28      222560 :         qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
      29      394840 :     } else if (*error > 0) {
      30      223666 :         qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
      31      223666 :         qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
      32             :     }
      33             : 
      34     1852200 :     round += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
      35     1234800 :              dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
      36             : 
      37      617400 :     dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
      38      617400 :     dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
      39             : 
      40      617400 :     dx[4] = ((dl[4] >> 30) | 1);
      41      617400 :     dx[5] = ((dl[5] >> 30) | 2) & ~1;
      42      617400 :     dx[6] = ((dl[6] >> 30) | 2) & ~1;
      43      617400 :     dx[7] = ((dl[7] >> 30) | 4) & ~3;
      44             : 
      45      617400 :     dl[4] = -dl[5]; dl[5] = -dl[6];
      46      617400 :     dl[6] = *in - dl[7]; dl[7] = *in;
      47      617400 :     dl[5] += dl[6]; dl[4] += dl[5];
      48             : 
      49      617400 :     *in -= (round >> shift);
      50      617400 :     *error = *in;
      51      617400 : }
      52             : 
      53           3 : av_cold void ff_ttaencdsp_init(TTAEncDSPContext *c)
      54             : {
      55           3 :     c->filter_process = ttaenc_filter_process_c;
      56             : 
      57             :     if (ARCH_X86)
      58           3 :         ff_ttaencdsp_init_x86(c);
      59           3 : }

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