mirror of https://github.com/ZDoom/qzdoom.git
141 lines
3.2 KiB
C++
141 lines
3.2 KiB
C++
/*
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TiMidity++ -- File interface for the pure sequencer.
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Copyright (C) 2019 Christoph Oelckers
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include <stdio.h>
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#include <vector>
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#include <string>
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namespace TimidityPlus
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{
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struct timidity_file
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{
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std::string filename;
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virtual ~timidity_file() {}
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virtual char* gets(char* buff, int n) = 0;
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virtual long read(void* buff, int32_t size, int32_t nitems) = 0;
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virtual long seek(long offset, int whence) = 0;
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virtual long tell() = 0;
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virtual void close() = 0;
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};
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class SoundFontReaderInterface
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{
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public:
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virtual ~SoundFontReaderInterface() {}
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virtual struct timidity_file* open_timidityplus_file(const char* fn) = 0;
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virtual void timidityplus_add_path(const char* path) = 0;
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};
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// A minimalistic sound font reader interface. Normally this should be replaced with something better tied into the host application.
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#ifdef USE_BASE_INTERFACE
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// Base version of timidity_file using stdio's FILE.
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struct timidity_file_FILE : public timidity_file
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{
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FILE* f = nullptr;
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~timidity_file_FILE()
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{
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if (f) fclose(f);
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}
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char* gets(char* buff, int n) override
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{
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if (!f) return nullptr;
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return fgets(buff, n, f);
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}
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long read(void* buff, int32_t size, int32_t nitems) override
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{
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if (!f) return 0;
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return (long)fread(buff, size, nitems, f);
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}
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long seek(long offset, int whence) override
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{
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if (!f) return 0;
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return fseek(f, offset, whence);
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}
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long tell() override
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{
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if (!f) return 0;
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return ftell(f);
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}
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void close()
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{
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if (f) fclose(f);
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delete this;
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}
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};
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class BaseSoundFontReader : public SoundFontReaderInterface
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{
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std::vector<std::string> paths;
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bool IsAbsPath(const char *name)
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{
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if (name[0] == '/' || name[0] == '\\') return true;
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#ifdef _WIN32
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/* [A-Za-z]: (for Windows) */
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if (isalpha(name[0]) && name[1] == ':') return true;
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#endif /* _WIN32 */
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return 0;
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}
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struct timidity_file* open_timidityplus_file(const char* fn)
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{
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FILE *f = nullptr;
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std::string fullname;
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if (!fn)
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{
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f = fopen("timidity.cfg", "rt");
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fullname = "timidity.cfg";
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}
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else
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{
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if (!IsAbsPath(fn))
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{
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for(int i = (int)paths.size()-1; i>=0; i--)
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{
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fullname = paths[i] + fn;
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f = fopen(fullname.c_str(), "rt");
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break;
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}
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}
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if (!f) f = fopen(fn, "rt");
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}
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if (!f) return nullptr;
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auto tf = new timidity_file_FILE;
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tf->f = f;
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tf->filename = fullname;
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return tf;
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}
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void timidityplus_add_path(const char* path)
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{
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std::string p = path;
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if (p.back() != '/' && p.back() != '\\') p += '/'; // always let it end with a slash.
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paths.push_back(p);
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}
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};
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#endif
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}
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