diff options
Diffstat (limited to 'core/qmpmidiread.cpp')
| -rw-r--r-- | core/qmpmidiread.cpp | 31 |
1 files changed, 17 insertions, 14 deletions
diff --git a/core/qmpmidiread.cpp b/core/qmpmidiread.cpp index 42cb88a..e7d92d3 100644 --- a/core/qmpmidiread.cpp +++ b/core/qmpmidiread.cpp @@ -12,6 +12,7 @@ const char* GM1SysX="\xF0\x7E\x7F\x09\x01\xF7"; const char* GM2SysX="\xF0\x7E\x7F\x09\x03\xF7"; const char* GSSysEx="\xF0\x41\x10\x42\x12\x40\x00\x7F\x00\x41\xF7"; const char* XGSysEx="\xF0\x43\x10\x4C\x00\x00\x7E\x00\xF7"; +#define assert(x) if(!(x))this->error(false,"assertion failure @ qmpmidiread.cpp:%d",__LINE__) void CSMFReader::error(int fatal,const char* format,...) { va_list ap;char buf[1024],bufr[1024]; @@ -68,43 +69,44 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered if((type&0x0F)==0x0F)//Meta Event { char metatype=fgetc(f); + uint32_t len=readVL();char* str=NULL; + if(len<=1024&&len>0)str=new char[len+8]; + if(str)fread(str,1,len,f);else fseek(f,len,SEEK_CUR); + if(str)str[len]='\0'; switch(metatype) { case 0x00://Sequence Number - fgetc(f);fgetc(f);fgetc(f); + assert(len==2||len==0); break; case 0x20://Channel Prefix - fgetc(f);fgetc(f); + assert(len==1); break; case 0x2F://End of Track - fgetc(f); + assert(len==0); return 0; break; case 0x51://Set Tempo - p1=readDW();p1&=0x00FFFFFF; + assert(len==3); + p1=((str[0]&0xffu)<<16u)|(str[1]&0xffu)<<8u|(str[2]&0xffu); curTrack->appendEvent(SEvent(curid,curt,type,metatype,p1)); break; case 0x54://SMTPE offset, not handled. - fgetc(f);fgetc(f);fgetc(f); - fgetc(f);fgetc(f);fgetc(f); + assert(len==5); break; case 0x58://Time signature - fgetc(f);p1=readDW(); + assert(len==4); + p1=((str[0]&0xffu)<<24u)|(str[1]&0xffu)<<16u|(str[2]&0xffu)<<8u|(str[3]&0xffu); curTrack->appendEvent(SEvent(curid,curt,type,metatype,p1)); break; case 0x59://Key signature - fgetc(f);p1=readSW(); + assert(len==2); + p1=(str[0]&0xffu)<<8u|(str[1]&0xffu); curTrack->appendEvent(SEvent(curid,curt,type,metatype,p1)); break; case 0x01:case 0x02:case 0x03: case 0x04:case 0x05:case 0x06: case 0x07:case 0x7F:default://text-like meta { - uint32_t len=readVL(),c;char* str=NULL; - if(len<=1024&&len>0)str=new char[len+8]; - for(c=0;c<len;++c) - if(str)str[c]=fgetc(f);else fgetc(f); - if(str)str[c]='\0'; curTrack->appendEvent(SEvent(curid,curt,type,metatype,0,str)); if(str&&metatype==0x03&&!ret->title) { @@ -116,9 +118,9 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered ret->copyright=new char[len+8]; strcpy(ret->copyright,str); } - if(len<=1024&&len>0)delete[] str; } } + if(str)delete[] str; } else if((type&0x0F)==0x00||(type&0x0F)==0x07)//SysEx { @@ -200,6 +202,7 @@ int CSMFReader::chunkReader(int hdrXp) uint32_t chnklen=readDW();fseek(f,chnklen,SEEK_CUR);return 0; } else return trackChunkReader(),1; + return 0; } CSMFReader::CSMFReader() { |