libsframe/sframe-impl.h

   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 */