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author | Chris Xiong <chirs241097@gmail.com> | 2016-04-06 16:54:29 +0800 |
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committer | Chris Xiong <chirs241097@gmail.com> | 2016-04-06 16:54:29 +0800 |
commit | 70fd2d85c1bd6fb8732e680e8fda9d36c317c732 (patch) | |
tree | 4f048e7af294a2d40d3cabb9ea0ff266aa1fc36c /qmidiplayerlite.src.d/qmpmidiread.cpp | |
parent | cf7eafca1fbc9aae495d7b7d7e1fb4bc92e6819f (diff) | |
download | QMidiPlayer-70fd2d85c1bd6fb8732e680e8fda9d36c317c732.tar.xz |
Too young too simple.
Diffstat (limited to 'qmidiplayerlite.src.d/qmpmidiread.cpp')
-rw-r--r-- | qmidiplayerlite.src.d/qmpmidiread.cpp | 240 |
1 files changed, 0 insertions, 240 deletions
diff --git a/qmidiplayerlite.src.d/qmpmidiread.cpp b/qmidiplayerlite.src.d/qmpmidiread.cpp deleted file mode 100644 index 0bcf597..0000000 --- a/qmidiplayerlite.src.d/qmpmidiread.cpp +++ /dev/null @@ -1,240 +0,0 @@ -//CLI Midi file player based on libfluidsynth -//Midi file reading module -//Written by Chris Xiong, 2015 -#include <cstdio> -#include <cstring> -#include <cstdlib> -#include <cstdint> -#include <cstdarg> -#include <algorithm> -#include "qmpmidiplay.hpp" -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"}; -bool cmp(SEvent *a,SEvent *b){return a->time-b->time?a->time<b->time:a->iid<b->iid;} -void CMidiFile::error(int fatal,const char* format,...) -{ - va_list ap; - va_start(ap,format);vfprintf(stderr,format,ap);va_end(ap); - fprintf(stderr," at %#lx\n",ftell(f)); - if(fatal)throw 2; -} -uint32_t CMidiFile::readSW() -{ - byteread+=2; - uint32_t ret=0; - for(int i=0;i<2;++i){ret<<=8;ret|=((uint32_t)fgetc(f))&0xFF;} - return ret; -} -uint32_t CMidiFile::readDW() -{ - byteread+=4; - uint32_t ret=0; - for(int i=0;i<4;++i){ret<<=8;ret|=((uint32_t)fgetc(f))&0xFF;} - return ret; -} -uint32_t CMidiFile::readVL() -{ - uint32_t ret=0,t,c=0; - do - { - t=fgetc(f); - if(++c>4)error(1,"E: Variable length type overflow."); - ret<<=7;ret|=(t&0x7F); - }while(t&0x80); - byteread+=c; - return ret; -} -int CMidiFile::eventReader()//returns 0 if End of Track encountered -{ - uint32_t delta=readVL();curt+=delta; - char type=fgetc(f);++byteread;uint32_t p1,p2; - static char lasttype; -retry: - switch(type&0xF0) - { - case 0x80://Note Off - p1=fgetc(f);p2=fgetc(f);byteread+=2; - eventList[eventc++]=new SEvent(curid,curt,type,p1,p2); - break; - case 0x90://Note On - p1=fgetc(f);p2=fgetc(f);byteread+=2; - if(p2) - { - ++notes; - eventList[eventc++]=new SEvent(curid,curt,type,p1,p2); - } - else - eventList[eventc++]=new SEvent(curid,curt,(type&0x0F)|0x80,p1,p2); - break; - case 0xA0://Note Aftertouch - p1=fgetc(f);p2=fgetc(f);byteread+=2; - eventList[eventc++]=new SEvent(curid,curt,type,p1,p2); - break; - case 0xB0://Controller Change - p1=fgetc(f);p2=fgetc(f);byteread+=2; - eventList[eventc++]=new SEvent(curid,curt,type,p1,p2); - break; - case 0xC0://Patch Change - p1=fgetc(f);++byteread; - eventList[eventc++]=new SEvent(curid,curt,type,p1,0); - break; - case 0xD0://Channel Aftertouch - p1=fgetc(f);++byteread; - eventList[eventc++]=new SEvent(curid,curt,type,p1,0); - break; - case 0xE0://Pitch wheel - p1=fgetc(f);p2=fgetc(f);byteread+=2; - eventList[eventc++]=new SEvent(curid,curt,type,(p1|(p2<<7))&0x3FFF,0); - break; - case 0xF0: - if((type&0x0F)==0x0F)//Meta Event - { - char metatype=fgetc(f);++byteread; - switch(metatype) - { - case 0x00://Sequence Number - fgetc(f);fgetc(f);fgetc(f); - byteread+=3; - break; - case 0x20://Channel Prefix - fgetc(f);fgetc(f);byteread+=2; - break; - case 0x2F://End of Track - fgetc(f);++byteread; - return 0; - break; - case 0x51://Set Tempo - p1=readDW();p1&=0x00FFFFFF; - eventList[eventc++]=new 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); - byteread+=6; - break; - case 0x58://Time signature - fgetc(f);++byteread; - p1=readDW(); - eventList[eventc++]=new SEvent(curid,curt,type,metatype,p1); - break; - case 0x59://Key signature - fgetc(f);++byteread; - p1=readSW(); - eventList[eventc++]=new 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) - { - ++byteread;if(str)str[c]=fgetc(f);else fgetc(f); - } - if(str)str[c]='\0';eventList[eventc++]=new SEvent(curid,curt,type,metatype,0,str); - if(str&&metatype==0x03&&!title) - { - title=new char[len+8]; - strcpy(title,str); - } - if(str&&metatype==0x02&&!copyright) - { - copyright=new char[len+8]; - strcpy(copyright,str); - } - if(len<=1024&&len>0)delete[] str; - } - } - } - else if((type&0x0F)==0x00||(type&0x0F)==0x07)//SysEx - { - uint32_t len=readVL(),c;char* str=NULL; - str=new char[len+8]; - if((type&0x0F)==0x00) - { - str[0]=0xF0;++len; - for(c=1;c<len;++c){++byteread;str[c]=fgetc(f);} - } - else for(c=0;c<len;++c){++byteread;str[c]=fgetc(f);} - eventList[eventc++]=new SEvent(curid,curt,type,len,0,str); - if(!strcmp(str,GM1SysX))std=1; - if(!strcmp(str,GM2SysX))std=2; - if(!strcmp(str,GSSysEx))std=3; - if(!strcmp(str,XGSysEx))std=4; - } - else error(0,"W: Unknown event type %#x",type); - break; - default: - fseek(f,-1,SEEK_CUR);--byteread;type=lasttype;goto retry; - } - lasttype=type;++curid; - return 1; -} -void CMidiFile::trackChunkReader() -{ - int chnklen=readDW();byteread=0;curt=0;curid=0; - while(/*byteread<chnklen&&*/eventReader()); - if(byteread<chnklen) - { - error(0,"W: Extra bytes after EOT event."); - while(byteread<chnklen){fgetc(f);++byteread;} - } - /*if(byteread>chnklen) - { - error(1,"E: Read past end of track."); - }*/ -} -void CMidiFile::headerChunkReader() -{ - int chnklen=readDW();byteread=0; - if(chnklen<6)error(1,"E: Header chunk too short."); - if(chnklen>6)error(0,"W: Header chunk length longer than expected. Ignoring extra bytes."); - fmt=readSW();trk=readSW();divs=readSW(); - if(divs&0x8000)error(1,"E: SMTPE format is not supported."); - for(;byteread<chnklen;++byteread){fgetc(f);} -} -int CMidiFile::chunkReader(int hdrXp) -{ - char hdr[6]; - if(!fgets(hdr,5,f))error(1,"E: Unexpected EOF."); - if(hdrXp) - if(strncmp(hdr,"MThd",4)){error(1,"E: Wrong MIDI header.");throw;} - else return headerChunkReader(),0; - else - if(strncmp(hdr,"MTrk",4)) - { - error(0,"W: Wrong track chunk header. Ignoring the whole chunk."); - for(int chnklen=readDW();chnklen>0;--chnklen)fgetc(f);return 0; - } - else return trackChunkReader(),1; -} -CMidiFile::CMidiFile(const char* fn) -{ - title=copyright=NULL;notes=eventc=0;std=0;valid=1; - try - { - if(!(f=fopen(fn,"rb")))throw (fprintf(stderr,"E: file %s doesn't exist!\n",fn),2); - chunkReader(1); - for(uint32_t i=0;i<trk;i+=chunkReader(0)); - printf("%d note(s)\n",notes); - fclose(f); - std::sort(eventList,eventList+eventc,cmp); - } - catch(int){fprintf(stderr,"E: %s is not a supported file.\n",fn);valid=0;} -} -CMidiFile::~CMidiFile() -{ - for(uint32_t i=0;i<eventc;++i)delete eventList[i]; - if(title)delete[] title;if(copyright)delete[] copyright; -} -const SEvent* CMidiFile::getEvent(uint32_t id){return id<eventc?eventList[id]:NULL;} -uint32_t CMidiFile::getEventCount(){return eventc;} -uint32_t CMidiFile::getDivision(){return divs;} -uint32_t CMidiFile::getNoteCount(){return notes;} -uint32_t CMidiFile::getStandard(){return std;} -bool CMidiFile::isValid(){return valid;} -const char* CMidiFile::getTitle(){return title;} -const char* CMidiFile::getCopyright(){return copyright;} |