1  /* Implementation header.
       2  
       3     Copyright (C) 2022-2023 Free Software Foundation, Inc.
       4  
       5     This file is part of libsframe.
       6  
       7     This program is free software; you can redistribute it and/or modify
       8     it under the terms of the GNU General Public License as published by
       9     the Free Software Foundation; either version 3 of the License, or
      10     (at your option) any later version.
      11  
      12     This program 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
      15     GNU General Public License for more details.
      16  
      17     You should have received a copy of the GNU General Public License
      18     along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef _SFRAME_IMPL_H
      21  #define _SFRAME_IMPL_H
      22  
      23  #include "sframe-api.h"
      24  
      25  #ifdef  __cplusplus
      26  extern "C"
      27  {
      28  #endif
      29  
      30  #include <assert.h>
      31  #define sframe_assert(expr) (assert (expr))
      32  
      33  struct sframe_decoder_ctx
      34  {
      35    /* SFrame header.  */
      36    sframe_header sfd_header;
      37    /* SFrame function desc entries table.  */
      38    sframe_func_desc_entry *sfd_funcdesc;
      39    /* SFrame FRE table.  */
      40    char *sfd_fres;
      41    /* Number of bytes needed for SFrame FREs.  */
      42    int sfd_fre_nbytes;
      43    /* Reference to the internally malloc'd buffer, if any, for endian flipping
      44       the original input buffer before decoding.  */
      45    void *sfd_buf;
      46  };
      47  
      48  typedef struct sf_fde_tbl sf_fde_tbl;
      49  typedef struct sf_fre_tbl sf_fre_tbl;
      50  
      51  struct sframe_encoder_ctx
      52  {
      53    /* SFrame header.  */
      54    sframe_header sfe_header;
      55    /* SFrame function desc entries table.  */
      56    sf_fde_tbl *sfe_funcdesc;
      57    /* SFrame FRE table.  */
      58    sf_fre_tbl *sfe_fres;
      59    /* Number of bytes needed for SFrame FREs.  */
      60    uint32_t sfe_fre_nbytes;
      61    /* SFrame output data buffer.  */
      62    char *sfe_data;
      63    /* Size of the SFrame output data buffer.  */
      64    size_t sfe_data_size;
      65  };
      66  
      67  #ifdef  __cplusplus
      68  }
      69  #endif
      70  
      71  #endif /* _SFRAME_IMPL_H */