1 /*
2    mkvmerge -- utility for splicing together matroska files
3    from component media subtypes
4 
5    Distributed under the GPL v2
6    see the file COPYING for details
7    or visit https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
8 
9    IO callback class definitions
10 
11    Written by Moritz Bunkus <moritz@bunkus.org>.
12 */
13 
14 #pragma once
15 
16 #include "common/common_pch.h"
17 
18 class mm_proxy_io_private_c;
19 class mm_proxy_io_c: public mm_io_c {
20 protected:
21   MTX_DECLARE_PRIVATE(mm_proxy_io_private_c)
22 
23   explicit mm_proxy_io_c(mm_proxy_io_private_c &p);
24 
25 public:
26   mm_proxy_io_c(mm_io_cptr const &proxy_io);
27   virtual ~mm_proxy_io_c();
28 
29   virtual void setFilePointer(int64_t offset, libebml::seek_mode mode=libebml::seek_beginning) override;
30   virtual uint64_t getFilePointer() override;
31   virtual void clear_eof() override;
32   virtual bool eof() override;
33   virtual void close() override;
34   virtual std::string get_file_name() const override;
35   virtual mm_io_c *get_proxied() const;
36 
37 protected:
38   virtual uint32_t _read(void *buffer, size_t size) override;
39   virtual size_t _write(const void *buffer, size_t size) override;
40 
41   void close_proxy_io();
42 };
43