LCOV - code coverage report
Current view: top level - libavcodec - mlpdsp.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 56 56 100.0 %
Date: 2017-12-18 20:14:19 Functions: 5 5 100.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2007-2008 Ian Caulfield
       3             :  *               2009 Ramiro Polla
       4             :  *
       5             :  * This file is part of FFmpeg.
       6             :  *
       7             :  * FFmpeg is free software; you can redistribute it and/or
       8             :  * modify it under the terms of the GNU Lesser General Public
       9             :  * License as published by the Free Software Foundation; either
      10             :  * version 2.1 of the License, or (at your option) any later version.
      11             :  *
      12             :  * FFmpeg is distributed in the hope that it will be useful,
      13             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      15             :  * Lesser General Public License for more details.
      16             :  *
      17             :  * You should have received a copy of the GNU Lesser General Public
      18             :  * License along with FFmpeg; if not, write to the Free Software
      19             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      20             :  */
      21             : 
      22             : #include "config.h"
      23             : #include "libavutil/attributes.h"
      24             : #include "mlpdsp.h"
      25             : #include "mlp.h"
      26             : 
      27       49156 : static void mlp_filter_channel(int32_t *state, const int32_t *coeff,
      28             :                                int firorder, int iirorder,
      29             :                                unsigned int filter_shift, int32_t mask,
      30             :                                int blocksize, int32_t *sample_buffer)
      31             : {
      32       49156 :     int32_t *firbuf = state;
      33       49156 :     int32_t *iirbuf = state + MAX_BLOCKSIZE + MAX_FIR_ORDER;
      34       49156 :     const int32_t *fircoeff = coeff;
      35       49156 :     const int32_t *iircoeff = coeff + MAX_FIR_ORDER;
      36             :     int i;
      37             : 
      38     1857716 :     for (i = 0; i < blocksize; i++) {
      39     1808560 :         int32_t residual = *sample_buffer;
      40             :         unsigned int order;
      41     1808560 :         int64_t accum = 0;
      42             :         int32_t result;
      43             : 
      44     9593392 :         for (order = 0; order < firorder; order++)
      45     7784832 :             accum += (int64_t) firbuf[order] * fircoeff[order];
      46     2103952 :         for (order = 0; order < iirorder; order++)
      47      295392 :             accum += (int64_t) iirbuf[order] * iircoeff[order];
      48             : 
      49     1808560 :         accum  = accum >> filter_shift;
      50     1808560 :         result = (accum + residual) & mask;
      51             : 
      52     1808560 :         *--firbuf = result;
      53     1808560 :         *--iirbuf = result - accum;
      54             : 
      55     1808560 :         *sample_buffer = result;
      56     1808560 :         sample_buffer += MAX_CHANNELS;
      57             :     }
      58       49156 : }
      59             : 
      60       23757 : void ff_mlp_rematrix_channel(int32_t *samples,
      61             :                              const int32_t *coeffs,
      62             :                              const uint8_t *bypassed_lsbs,
      63             :                              const int8_t *noise_buffer,
      64             :                              int index,
      65             :                              unsigned int dest_ch,
      66             :                              uint16_t blockpos,
      67             :                              unsigned int maxchan,
      68             :                              int matrix_noise_shift,
      69             :                              int access_unit_size_pow2,
      70             :                              int32_t mask)
      71             : {
      72             :     unsigned int src_ch, i;
      73       23757 :     int index2 = 2 * index + 1;
      74      974037 :     for (i = 0; i < blockpos; i++) {
      75      950280 :         int64_t accum = 0;
      76             : 
      77     5571080 :         for (src_ch = 0; src_ch <= maxchan; src_ch++)
      78     4620800 :             accum += (int64_t) samples[src_ch] * coeffs[src_ch];
      79             : 
      80      950280 :         if (matrix_noise_shift) {
      81      272800 :             index &= access_unit_size_pow2 - 1;
      82      272800 :             accum += noise_buffer[index] << (matrix_noise_shift + 7);
      83      272800 :             index += index2;
      84             :         }
      85             : 
      86      950280 :         samples[dest_ch] = ((accum >> 14) & mask) + *bypassed_lsbs;
      87      950280 :         bypassed_lsbs += MAX_CHANNELS;
      88      950280 :         samples += MAX_CHANNELS;
      89             :     }
      90       23757 : }
      91             : 
      92        4238 : static int32_t (*mlp_select_pack_output(uint8_t *ch_assign,
      93             :                                         int8_t *output_shift,
      94             :                                         uint8_t max_matrix_channel,
      95             :                                         int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int)
      96             : {
      97        4238 :     return ff_mlp_pack_output;
      98             : }
      99             : 
     100       15787 : int32_t ff_mlp_pack_output(int32_t lossless_check_data,
     101             :                            uint16_t blockpos,
     102             :                            int32_t (*sample_buffer)[MAX_CHANNELS],
     103             :                            void *data,
     104             :                            uint8_t *ch_assign,
     105             :                            int8_t *output_shift,
     106             :                            uint8_t max_matrix_channel,
     107             :                            int is32)
     108             : {
     109       15787 :     unsigned int i, out_ch = 0;
     110       15787 :     int32_t *data_32 = data;
     111       15787 :     int16_t *data_16 = data;
     112             : 
     113      647267 :     for (i = 0; i < blockpos; i++) {
     114     2440040 :         for (out_ch = 0; out_ch <= max_matrix_channel; out_ch++) {
     115     1808560 :             int mat_ch = ch_assign[out_ch];
     116     3617120 :             int32_t sample = sample_buffer[i][mat_ch] *
     117     1808560 :                           (1U << output_shift[mat_ch]);
     118     1808560 :             lossless_check_data ^= (sample & 0xffffff) << mat_ch;
     119     1808560 :             if (is32)
     120     1091200 :                 *data_32++ = sample * 256U;
     121             :             else
     122      717360 :                 *data_16++ = sample >> 8;
     123             :         }
     124             :     }
     125       15787 :     return lossless_check_data;
     126             : }
     127             : 
     128           6 : av_cold void ff_mlpdsp_init(MLPDSPContext *c)
     129             : {
     130           6 :     c->mlp_filter_channel = mlp_filter_channel;
     131           6 :     c->mlp_rematrix_channel = ff_mlp_rematrix_channel;
     132           6 :     c->mlp_select_pack_output = mlp_select_pack_output;
     133           6 :     c->mlp_pack_output = ff_mlp_pack_output;
     134             :     if (ARCH_ARM)
     135             :         ff_mlpdsp_init_arm(c);
     136             :     if (ARCH_X86)
     137           6 :         ff_mlpdsp_init_x86(c);
     138           6 : }

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