libavcodec/mlpdsp.h

   1 /*
   2  * MLP codec common header file
   3  * Copyright (c) 2007-2008 Ian Caulfield
   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 #ifndef AVCODEC_MLPDSP_H
  23 #define AVCODEC_MLPDSP_H
  24
  25 #include <stdint.h>
  26 #include "mlp.h"
  27
  28 void ff_mlp_rematrix_channel(int32_t *samples,
  29                              const int32_t *coeffs,
  30                              const uint8_t *bypassed_lsbs,
  31                              const int8_t *noise_buffer,
  32                              int index,
  33                              unsigned int dest_ch,
  34                              uint16_t blockpos,
  35                              unsigned int maxchan,
  36                              int matrix_noise_shift,
  37                              int access_unit_size_pow2,
  38                              int32_t mask);
  39
  40 int32_t ff_mlp_pack_output(int32_t lossless_check_data,
  41                            uint16_t blockpos,
  42                            int32_t (*sample_buffer)[MAX_CHANNELS],
  43                            void *data,
  44                            uint8_t *ch_assign,
  45                            int8_t *output_shift,
  46                            uint8_t max_matrix_channel,
  47                            int is32);
  48
  49 typedef struct MLPDSPContext {
  50     void (*mlp_filter_channel)(int32_t *state, const int32_t *coeff,
  51                                int firorder, int iirorder,
  52                                unsigned int filter_shift, int32_t mask,
  53                                int blocksize, int32_t *sample_buffer);
  54     void (*mlp_rematrix_channel)(int32_t *samples,
  55                                  const int32_t *coeffs,
  56                                  const uint8_t *bypassed_lsbs,
  57                                  const int8_t *noise_buffer,
  58                                  int index,
  59                                  unsigned int dest_ch,
  60                                  uint16_t blockpos,
  61                                  unsigned int maxchan,
  62                                  int matrix_noise_shift,
  63                                  int access_unit_size_pow2,
  64                                  int32_t mask);
  65     int32_t (*(*mlp_select_pack_output)(uint8_t *ch_assign,
  66                                         int8_t *output_shift,
  67                                         uint8_t max_matrix_channel,
  68                                         int is32))(int32_t, uint16_t, int32_t (*)[], void *, uint8_t*, int8_t *, uint8_t, int);
  69 } MLPDSPContext;
  70
  71 void ff_mlpdsp_init(MLPDSPContext *c);
  72 void ff_mlpdsp_init_arm(MLPDSPContext *c);
  73 void ff_mlpdsp_init_x86(MLPDSPContext *c);
  74
  75 #endif /* AVCODEC_MLPDSP_H */