source/includes/travesty/bstream.h

   1 /*
   2  * travesty, pure C VST3-compatible interface
   3  * Copyright (C) 2021-2022 Filipe Coelho <falktx@falktx.com>
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any purpose with
   6  * or without fee is hereby granted, provided that the above copyright notice and this
   7  * permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
  10  * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
  11  * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
  12  * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
  13  * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #pragma once
  18
  19 #include "base.h"
  20
  21 enum v3_seek_mode {
  22         V3_SEEK_SET = 0,
  23         V3_SEEK_CUR,
  24         V3_SEEK_END
  25 };
  26
  27 struct v3_bstream {
  28 #ifndef __cplusplus
  29         struct v3_funknown;
  30 #endif
  31         v3_result (V3_API *read)(void* self, void* buffer, int32_t num_bytes, int32_t* bytes_read);
  32         v3_result (V3_API *write)(void* self, void* buffer, int32_t num_bytes, int32_t* bytes_written);
  33         v3_result (V3_API *seek)(void* self, int64_t pos, int32_t seek_mode, int64_t* result);
  34         v3_result (V3_API *tell)(void* self, int64_t* pos);
  35 };
  36
  37 static constexpr const v3_tuid v3_bstream_iid =
  38         V3_ID(0xC3BF6EA2, 0x30994752, 0x9B6BF990, 0x1EE33E9B);
  39
  40 #ifdef __cplusplus
  41
  42 /**
  43  * C++ variants
  44  */
  45
  46 struct v3_bstream_cpp : v3_funknown {
  47         v3_bstream stream;
  48 };
  49
  50 #endif