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Diffstat (limited to 'core/qmpmidiread.cpp')
-rw-r--r--core/qmpmidiread.cpp92
1 files changed, 44 insertions, 48 deletions
diff --git a/core/qmpmidiread.cpp b/core/qmpmidiread.cpp
index cd3ffa3..6089ac5 100644
--- a/core/qmpmidiread.cpp
+++ b/core/qmpmidiread.cpp
@@ -14,21 +14,20 @@ 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";
void CSMFReader::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 std::runtime_error("fatal error");
+ va_list ap;char buf[1024],bufr[1024];
+ va_start(ap,format);vsnprintf(buf,1024,format,ap);va_end(ap);
+ snprintf(bufr,1024,"%s at %#lx",buf,ftell(f));
+ if(fatal)throw std::runtime_error(bufr);
+ else fprintf(stderr,"CSMFReader W: %s.\n",bufr);
}
uint32_t CSMFReader::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 CSMFReader::readDW()
{
- byteread+=4;
uint32_t ret=0;
for(int i=0;i<4;++i){ret<<=8;ret|=((uint32_t)fgetc(f))&0xFF;}
return ret;
@@ -39,18 +38,17 @@ uint32_t CSMFReader::readVL()
do
{
t=fgetc(f);
- if(++c>4)error(1,"E: Variable length type overflow.");
+ if(++c>4)error(1,"Variable length type overflow");
ret<<=7;ret|=(t&0x7F);
}while(t&0x80);
- byteread+=c;
return ret;
}
int CSMFReader::eventReader()//returns 0 if End of Track encountered
{
uint32_t delta=readVL();curt+=delta;
- char type=fgetc(f);++byteread;uint32_t p1,p2;
+ char type=fgetc(f);uint32_t p1,p2;
static char lasttype;eventdiscarded=0;
- if(!(type&0x80)){fseek(f,-1,SEEK_CUR);--byteread;type=lasttype;}
+ if(!(type&0x80)){fseek(f,-1,SEEK_CUR);type=lasttype;}
switch(type&0xF0)
{
case 0x80://Note Off
@@ -58,29 +56,28 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered
case 0xA0://Note Aftertouch
case 0xB0://Controller Change
case 0xE0://Pitch wheel
- p1=fgetc(f);p2=fgetc(f);byteread+=2;
+ p1=fgetc(f);p2=fgetc(f);
curTrack->appendEvent(SEvent(curid,curt,type,p1,p2));
break;
case 0xC0://Patch Change
case 0xD0://Channel Aftertouch
- p1=fgetc(f);++byteread;
+ p1=fgetc(f);
curTrack->appendEvent(SEvent(curid,curt,type,p1,0));
break;
case 0xF0:
if((type&0x0F)==0x0F)//Meta Event
{
- char metatype=fgetc(f);++byteread;
+ char metatype=fgetc(f);
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;
+ fgetc(f);fgetc(f);
break;
case 0x2F://End of Track
- fgetc(f);++byteread;
+ fgetc(f);
return 0;
break;
case 0x51://Set Tempo
@@ -90,16 +87,13 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered
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();
+ fgetc(f);p1=readDW();
curTrack->appendEvent(SEvent(curid,curt,type,metatype,p1));
break;
case 0x59://Key signature
- fgetc(f);++byteread;
- p1=readSW();
+ fgetc(f);p1=readSW();
curTrack->appendEvent(SEvent(curid,curt,type,metatype,p1));
break;
case 0x01:case 0x02:case 0x03:
@@ -109,9 +103,7 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered
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]=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)
@@ -135,9 +127,9 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered
if((type&0x0F)==0x00)
{
str[0]=0xF0;++len;
- for(c=1;c<len;++c){++byteread;str[c]=fgetc(f);}
+ for(c=1;c<len;++c){str[c]=fgetc(f);}
}
- else for(c=0;c<len;++c){++byteread;str[c]=fgetc(f);}
+ else for(c=0;c<len;++c){str[c]=fgetc(f);}
curTrack->appendEvent(SEvent(curid,curt,type,len,0,str));
if(!strcmp(str,GM1SysX))ret->std=1;
if(!strcmp(str,GM2SysX))ret->std=2;
@@ -145,10 +137,10 @@ int CSMFReader::eventReader()//returns 0 if End of Track encountered
if(!strcmp(str,XGSysEx))ret->std=4;
delete[] str;
}
- else error(0,"W: Unknown event type %#x",type);
+ else error(0,"Unknown event type %#x",type);
break;
default:
- error(0,"W: Unknown event type %#x",type);
+ error(0,"Unknown event type %#x",type);
}
lasttype=type;++curid;
if(curTrack->eventList.size())
@@ -163,50 +155,49 @@ void CSMFReader::trackChunkReader()
{
ret->tracks.push_back(CMidiTrack());
curTrack=&ret->tracks.back();
- int chnklen=readDW();byteread=0;curt=0;curid=0;
- while(/*byteread<chnklen&&*/eventReader());
+ int chnklen=readDW();byteread=ftell(f);curt=0;curid=0;
+ while(eventReader());
+ byteread=ftell(f)-byteread;
if(byteread<chnklen)
{
- error(0,"W: Extra bytes after EOT event.");
- while(byteread<chnklen){fgetc(f);++byteread;}
+ error(0,"Extra bytes after EOT event");
+ for(;byteread<chnklen;++byteread)fgetc(f);
}
- /*if(byteread>chnklen)
- {
- error(1,"E: Read past end of track.");
- }*/
+ if(byteread>chnklen)
+ error(1,"Read past end of track");
}
void CSMFReader::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.");
+ int chnklen=readDW();byteread=ftell(f);
+ if(chnklen<6)error(1,"Header chunk too short");
+ if(chnklen>6)error(0,"Header chunk length longer than expected. Ignoring extra bytes");
fmt=readSW();trk=readSW();ret->divs=readSW();
- if(ret->divs&0x8000)error(1,"E: SMTPE format is not supported.");
- for(;byteread<chnklen;++byteread){fgetc(f);}
+ if(ret->divs&0x8000)error(1,"SMTPE format is not supported");
+ for(byteread=ftell(f)-byteread;byteread<chnklen;++byteread){fgetc(f);}
}
int CSMFReader::chunkReader(int hdrXp)
{
char hdr[6];
fread(hdr,1,4,f);
- if(feof(f))error(1,"E: Unexpected EOF.");
+ if(feof(f))error(1,"Unexpected EOF");
if(hdrXp)
{
if(!strncmp(hdr,"RIFF",4))
{
fseek(f,4,SEEK_CUR);
fread(hdr,1,4,f);
- if(strncmp(hdr,"RMID",4)){error(1,"E: Wrong file type in RIFF container.");throw std::runtime_error("Wrong file type in RIFF container");}
+ if(strncmp(hdr,"RMID",4)){error(1,"Wrong file type in RIFF container");}
fseek(f,8,SEEK_CUR);
fread(hdr,1,4,f);
}
- if(strncmp(hdr,"MThd",4)){error(1,"E: Wrong MIDI header.");throw std::runtime_error("Wrong MIDI header");}
+ if(strncmp(hdr,"MThd",4)){error(1,"Wrong MIDI header.");}
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;
+ error(0,"Wrong track chunk header. Ignoring the whole chunk");
+ uint32_t chnklen=readDW();fseek(f,chnklen,SEEK_CUR);return 0;
}
else return trackChunkReader(),1;
}
@@ -220,12 +211,17 @@ CMidiFile* CSMFReader::readFile(const char* fn)
ret->title=ret->copyright=NULL;ret->std=0;ret->valid=1;
try
{
- if(!(f=fopen(fn,"rb")))throw (fprintf(stderr,"E: file %s doesn't exist!\n",fn),std::runtime_error("File doesn't exist"));
+ if(!(f=fopen(fn,"rb")))
+ throw std::runtime_error("File doesn't exist");
chunkReader(1);
for(uint32_t i=0;i<trk;i+=chunkReader(0));
fclose(f);f=NULL;
}
- catch(std::runtime_error&){fprintf(stderr,"E: %s is not a supported file.\n",fn);ret->valid=0;if(f)fclose(f);f=NULL;}
+ catch(std::runtime_error& e)
+ {
+ fprintf(stderr,"CSMFReader E: %s is not a supported file. Cause: %s.\n",fn,e.what());
+ ret->valid=0;if(f)fclose(f);f=NULL;
+ }
return ret;
}
CSMFReader::~CSMFReader()
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-27 08:03:00 +0000