LCOV - code coverage report
Current view: top level - libavcodec - flacdsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 47 59 79.7 %
Date: 2017-12-14 01:15:32 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2012 Mans Rullgard <mans@mansr.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/attributes.h"
      22             : #include "libavutil/samplefmt.h"
      23             : #include "flacdsp.h"
      24             : #include "config.h"
      25             : 
      26             : #define SAMPLE_SIZE 16
      27             : #define PLANAR 0
      28             : #include "flacdsp_template.c"
      29             : #include "flacdsp_lpc_template.c"
      30             : 
      31             : #undef  PLANAR
      32             : #define PLANAR 1
      33             : #include "flacdsp_template.c"
      34             : 
      35             : #undef  SAMPLE_SIZE
      36             : #undef  PLANAR
      37             : #define SAMPLE_SIZE 32
      38             : #define PLANAR 0
      39             : #include "flacdsp_template.c"
      40             : #include "flacdsp_lpc_template.c"
      41             : 
      42             : #undef  PLANAR
      43             : #define PLANAR 1
      44             : #include "flacdsp_template.c"
      45             : 
      46        6152 : static void flac_lpc_16_c(int32_t *decoded, const int coeffs[32],
      47             :                           int pred_order, int qlevel, int len)
      48             : {
      49             :     int i, j;
      50             : 
      51    18959641 :     for (i = pred_order; i < len - 1; i += 2, decoded += 2) {
      52    18953489 :         SUINT c = coeffs[0];
      53    18953489 :         SUINT d = decoded[0];
      54    18953489 :         int s0 = 0, s1 = 0;
      55    32934777 :         for (j = 1; j < pred_order; j++) {
      56    13981288 :             s0 += c*d;
      57    13981288 :             d = decoded[j];
      58    13981288 :             s1 += c*d;
      59    13981288 :             c = coeffs[j];
      60             :         }
      61    18953489 :         s0 += c*d;
      62    18953489 :         d = decoded[j] += (SUINT)(s0 >> qlevel);
      63    18953489 :         s1 += c*d;
      64    18953489 :         decoded[j + 1] += (SUINT)(s1 >> qlevel);
      65             :     }
      66        6152 :     if (i < len) {
      67        5713 :         int sum = 0;
      68       14886 :         for (j = 0; j < pred_order; j++)
      69        9173 :             sum += coeffs[j] * (SUINT)decoded[j];
      70        5713 :         decoded[j] = decoded[j] + (unsigned)(sum >> qlevel);
      71             :     }
      72        6152 : }
      73             : 
      74        2146 : static void flac_lpc_32_c(int32_t *decoded, const int coeffs[32],
      75             :                           int pred_order, int qlevel, int len)
      76             : {
      77             :     int i, j;
      78             : 
      79    12220650 :     for (i = pred_order; i < len; i++, decoded++) {
      80    12218504 :         int64_t sum = 0;
      81   119609045 :         for (j = 0; j < pred_order; j++)
      82   107390541 :             sum += (int64_t)coeffs[j] * decoded[j];
      83    12218504 :         decoded[j] += sum >> qlevel;
      84             :     }
      85             : 
      86        2146 : }
      87             : 
      88        5879 : av_cold void ff_flacdsp_init(FLACDSPContext *c, enum AVSampleFormat fmt, int channels,
      89             :                              int bps)
      90             : {
      91        5879 :     c->lpc16        = flac_lpc_16_c;
      92        5879 :     c->lpc32        = flac_lpc_32_c;
      93        5879 :     c->lpc16_encode = flac_lpc_encode_c_16;
      94        5879 :     c->lpc32_encode = flac_lpc_encode_c_32;
      95             : 
      96        5879 :     switch (fmt) {
      97         492 :     case AV_SAMPLE_FMT_S32:
      98         492 :         c->decorrelate[0] = flac_decorrelate_indep_c_32;
      99         492 :         c->decorrelate[1] = flac_decorrelate_ls_c_32;
     100         492 :         c->decorrelate[2] = flac_decorrelate_rs_c_32;
     101         492 :         c->decorrelate[3] = flac_decorrelate_ms_c_32;
     102         492 :         break;
     103             : 
     104           0 :     case AV_SAMPLE_FMT_S32P:
     105           0 :         c->decorrelate[0] = flac_decorrelate_indep_c_32p;
     106           0 :         c->decorrelate[1] = flac_decorrelate_ls_c_32p;
     107           0 :         c->decorrelate[2] = flac_decorrelate_rs_c_32p;
     108           0 :         c->decorrelate[3] = flac_decorrelate_ms_c_32p;
     109           0 :         break;
     110             : 
     111        5387 :     case AV_SAMPLE_FMT_S16:
     112        5387 :         c->decorrelate[0] = flac_decorrelate_indep_c_16;
     113        5387 :         c->decorrelate[1] = flac_decorrelate_ls_c_16;
     114        5387 :         c->decorrelate[2] = flac_decorrelate_rs_c_16;
     115        5387 :         c->decorrelate[3] = flac_decorrelate_ms_c_16;
     116        5387 :         break;
     117             : 
     118           0 :     case AV_SAMPLE_FMT_S16P:
     119           0 :         c->decorrelate[0] = flac_decorrelate_indep_c_16p;
     120           0 :         c->decorrelate[1] = flac_decorrelate_ls_c_16p;
     121           0 :         c->decorrelate[2] = flac_decorrelate_rs_c_16p;
     122           0 :         c->decorrelate[3] = flac_decorrelate_ms_c_16p;
     123           0 :         break;
     124             :     }
     125             : 
     126             :     if (ARCH_ARM)
     127             :         ff_flacdsp_init_arm(c, fmt, channels, bps);
     128             :     if (ARCH_X86)
     129        5879 :         ff_flacdsp_init_x86(c, fmt, channels, bps);
     130        5879 : }

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