text: /* Copyright  (C) 2010-2018 The RetroArch team
   *
   * ---------------------------------------------------------------------------------------
   * The following license statement only applies to this file (trans_stream.h).
   * ---------------------------------------------------------------------------------------
   *
   * Permission is hereby granted, free of charge,
   * to any person obtaining a copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation the rights to
   * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
   * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
   * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
   * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #ifndef LIBRETRO_SDK_TRANS_STREAM_H__
  #define LIBRETRO_SDK_TRANS_STREAM_H__
  
  #include <stdint.h>
  #include <stddef.h>
  #include <boolean.h>
  
  #ifdef _WIN32
  #include <direct.h>
  #else
  #include <unistd.h>
  #endif
  
  #include <retro_miscellaneous.h>
  
  #include <retro_common_api.h>
  
  RETRO_BEGIN_DECLS
  
  enum trans_stream_error
  {
      TRANS_STREAM_ERROR_NONE = 0,
      TRANS_STREAM_ERROR_AGAIN, /* more work to do */
      TRANS_STREAM_ERROR_ALLOCATION_FAILURE, /* malloc failure */
      TRANS_STREAM_ERROR_INVALID, /* invalid state */
      TRANS_STREAM_ERROR_BUFFER_FULL, /* output buffer full */
      TRANS_STREAM_ERROR_OTHER
  };
  
  struct trans_stream_backend
  {
     const char *ident;
     const struct trans_stream_backend *reverse;
  
     /* Create a stream data structure */
     void *(*stream_new)(void);
  
     /* Free it */
     void  (*stream_free)(void *);
  
     /* (Optional) Set extra properties, defined per transcoder */
     bool  (*define)(void *, const char *, uint32_t);
  
     /* Set our input source */
     void  (*set_in)(void *, const uint8_t *, uint32_t);
  
     /* Set our output target */
     void  (*set_out)(void *, uint8_t *, uint32_t);
  
     /* Perform a transcoding, flushing/finalizing if asked to. Writes out how
      * many bytes were read and written. Error target optional. */
     bool  (*trans)(void *, bool, uint32_t *, uint32_t *, enum trans_stream_error *);
  };
  
  /**
   * trans_stream_trans_full:
   * @backend                     : transcoding backend
   * @data                        : (optional) existing stream data, or a target
   *                                for the new stream data to be saved
   * @in                          : input data
   * @in_size                     : input size
   * @out                         : output data
   * @out_size                    : output size
   * @error                       : (optional) output for error code
   *
   * Perform a full transcoding from a source to a destination.
   */
  bool trans_stream_trans_full(
      struct trans_stream_backend *backend, void **data,
      const uint8_t *in, uint32_t in_size,
      uint8_t *out, uint32_t out_size,
      enum trans_stream_error *error);
  
  const struct trans_stream_backend* trans_stream_get_zlib_deflate_backend(void);
  const struct trans_stream_backend* trans_stream_get_zlib_inflate_backend(void);
  const struct trans_stream_backend* trans_stream_get_pipe_backend(void);
  
  extern const struct trans_stream_backend zlib_deflate_backend;
  extern const struct trans_stream_backend zlib_inflate_backend;
  extern const struct trans_stream_backend pipe_backend;
  
  RETRO_END_DECLS
  
  #endif
  