libsidplayfp
1.0.3
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00001 /* 00002 * This file is part of libsidplayfp, a SID player engine. 00003 * 00004 * Copyright (C) Michael Schwendt <mschwendt@yahoo.com> 00005 * 00006 * This program is free software; you can redistribute it and/or modify 00007 * it under the terms of the GNU General Public License as published by 00008 * the Free Software Foundation; either version 2 of the License, or 00009 * (at your option) any later version. 00010 * 00011 * This program is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 * GNU General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU General Public License 00017 * along with this program; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00019 */ 00020 00021 #ifndef BUFFER_H 00022 #define BUFFER_H 00023 00024 #include <assert.h> 00025 #include <stdint.h> 00026 00027 template <class T> class Buffer_sidtt 00028 { 00029 public: 00030 Buffer_sidtt() : dummy(0) 00031 { 00032 kill(); 00033 } 00034 00035 Buffer_sidtt(T* inBuf, uint_least32_t inLen) : dummy(0) 00036 { 00037 kill(); 00038 if (inBuf!=0 && inLen!=0) 00039 { 00040 buf = inBuf; 00041 bufLen = inLen; 00042 } 00043 } 00044 00045 bool assign(T* newBuf, uint_least32_t newLen) 00046 { 00047 erase(); 00048 buf = newBuf; 00049 bufLen = newLen; 00050 return (buf!=0); 00051 } 00052 00053 T* get() const { return buf; } 00054 uint_least32_t len() const { return bufLen; } 00055 00056 T* xferPtr() 00057 { 00058 T* tmpBuf = buf; 00059 buf = 0; 00060 return tmpBuf; 00061 } 00062 00063 uint_least32_t xferLen() 00064 { 00065 const uint_least32_t tmpBufLen = bufLen; 00066 bufLen = 0; 00067 return tmpBufLen; 00068 } 00069 00070 T& operator[](uint_least32_t index) 00071 { 00072 return (index < bufLen) ? buf[index] : dummy; 00073 } 00074 00075 bool isEmpty() const { return (buf==0); } 00076 00077 void erase() 00078 { 00079 if (buf!=0 && bufLen!=0) 00080 { 00081 #ifndef SID_HAVE_BAD_COMPILER 00082 delete[] buf; 00083 #else 00084 delete[] (void *) buf; 00085 #endif 00086 } 00087 kill(); 00088 } 00089 00090 ~Buffer_sidtt() 00091 { 00092 erase(); 00093 } 00094 00095 private: 00096 T* buf; 00097 uint_least32_t bufLen; 00098 T dummy; 00099 00100 void kill() 00101 { 00102 buf = 0; 00103 bufLen = 0; 00104 } 00105 00106 private: // prevent copying 00107 // SAW - Need function body so code can be fully instatiated 00108 // for exporting from dll. Use asserts in debug mode as these 00109 // should not be used. 00110 Buffer_sidtt(const Buffer_sidtt&) : dummy (0) { assert(0); } 00111 Buffer_sidtt& operator=(Buffer_sidtt& b) 00112 { 00113 assert(0); 00114 return b; 00115 } 00116 }; 00117 00118 #endif /* BUFFER_H */