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@derselbst
derselbst committed Dec 20, 2015
1 parent 642c9e9 commit ea404b8
Showing 1 changed file with 80 additions and 80 deletions.
160 changes: 80 additions & 80 deletions src/BMS_DEC.C
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Original file line number Diff line number Diff line change
Expand Up @@ -188,11 +188,11 @@ int parse_ev(FILE * in, FILE * out)
// usually 0x0A
unsigned char duration = getc(in);

if(duration!=0)
{
printf("pan position change duration in track %u is: %u\n", tracknum, duration);
}
if(duration!=0)
{
printf("pan position change duration in track %u is: %u\n", tracknum, duration);
}

putc(midi_status_control_change(tracknum), out);
putc(0x0A, out);
putc(pan_position&0x7f, out);
Expand All @@ -219,12 +219,12 @@ int parse_ev(FILE * in, FILE * out)

// usually 0x00
unsigned char duration = getc(in);
if(duration!=0)
{
printf("volume change duration in track %u is: %u\n", tracknum, duration);
}

if(duration!=0)
{
printf("volume change duration in track %u is: %u\n", tracknum, duration);
}

putc(midi_status_control_change(tracknum), out);
putc(0x07, out); //TODO: unsure whether using expression instead of volume change
putc(volume&0x7f, out);
Expand Down Expand Up @@ -258,11 +258,11 @@ int parse_ev(FILE * in, FILE * out)
// usually 0x04
unsigned char duration = getc(in);

if(duration!=0)
{
printf("pitch change duration in track %u is: %u\n", tracknum, duration);
}
if(duration!=0)
{
printf("pitch change duration in track %u is: %u\n", tracknum, duration);
}

putc(midi_status_pitch_wheel(tracknum), out);

// TODO: before writing to file, correctly convert pitch value
Expand Down Expand Up @@ -365,31 +365,31 @@ int parse_ev(FILE * in, FILE * out)
else if(ev==0xF9) fseek(in,2,SEEK_CUR);
else if(ev==0xFD)
{
// TODO: support tempo change throughout track, not just as initialization
if(tempo==0)
{
tempo = (getc(in)<<8) | getc(in);
}
else
{
puts("This BMS is using Tempo Change Events, which is not yet implemented. Please create a feature request by emailing tom[DOT]mbrt[AT]gmail[DOT]com stating with which BMS you experienced this issue.");
}
// TODO: support tempo change throughout track, not just as initialization
if(tempo==0)
{
tempo = (getc(in)<<8) | getc(in);
}
else
{
puts("This BMS is using Tempo Change Events, which is not yet implemented. Please create a feature request by emailing tom[DOT]mbrt[AT]gmail[DOT]com stating with which BMS you experienced this issue.");
}
}
else if(ev==0xFE)
{
if(ppqn==0) // unset
{
ppqn = (getc(in)<<8) | getc(in);
}
else
{
puts("PPQN already set and not supported as change event. Ignoring it.");
}
if(ppqn==0) // unset
{
ppqn = (getc(in)<<8) | getc(in);
}
else
{
puts("PPQN already set and not supported as change event. Ignoring it.");
}
}
else if(ev==0xFF) return BR_FF;
else
{
printf("Warning: Event %d (0x%X) unhandled\n", ev, ev);
printf("Warning: Event %d (0x%X) unhandled\n", ev, ev);
}
return BR_NORMAL;
}
Expand Down Expand Up @@ -470,65 +470,65 @@ int main(int argc, char ** argv)

// ppqn
if(ppqn==0) // if unset
{
puts("BMS doesnt specify PPQN. Defaulting to 96.");
ppqn=96;
}
{
puts("BMS doesnt specify PPQN. Defaulting to 96.");
ppqn=96;
}
putc((ppqn>>8)&0xFF,midi_file);
putc(ppqn&0xFF,midi_file);

// write tracks
out = fopen("TEMP","rb");

if(tempo==0)
{
puts("BMS doesnt specify a Tempo. Imply 120 BPM.");
}
else
{
// write meta track (i.e. for tempo change only)
putc('M',midi_file);
putc('T',midi_file);
putc('r',midi_file);
putc('k',midi_file);
// write meta track (i.e. for tempo change only)
putc('M',midi_file);
putc('T',midi_file);
putc('r',midi_file);
putc('k',midi_file);

// tracklength
putc(0,midi_file);
putc(0,midi_file);
putc(0,midi_file);
putc(11,midi_file);
// 0 delay
write_var_len(0,midi_file);
// tempo change event
putc(0xFF,midi_file);
putc(0x51,midi_file);
putc(0x03,midi_file);
if(tempo<=3)
{
puts("Tempo slower 4 BPM are not supported by MIDI spec. Setting to slowest possible.");
putc(0xFF,midi_file);
putc(0xFF,midi_file);
putc(0xFF,midi_file);
}
else // most sig. byte should be 0 so we can write tempo to 3 bytes
{
// micro seconds per quarter note
uint32_t usec_pqn=(uint32_t)((60/(float)tempo) * 1000 * 1000);
putc((usec_pqn>>16) & 0xFF,midi_file);
putc((usec_pqn>>8) & 0xFF,midi_file);
putc((usec_pqn) & 0xFF,midi_file);
}
// 0 delay
write_var_len(0,midi_file);
// end of track
putc(0xFF,midi_file);
putc(0x2F,midi_file);
putc(0,midi_file);
// tracklength
putc(0,midi_file);
putc(0,midi_file);
putc(0,midi_file);
putc(11,midi_file);

// 0 delay
write_var_len(0,midi_file);
// tempo change event
putc(0xFF,midi_file);
putc(0x51,midi_file);
putc(0x03,midi_file);

if(tempo<=3)
{
puts("Tempo slower 4 BPM are not supported by MIDI spec. Setting to slowest possible.");
putc(0xFF,midi_file);
putc(0xFF,midi_file);
putc(0xFF,midi_file);
}
else // most sig. byte should be 0 so we can write tempo to 3 bytes
{
// micro seconds per quarter note
uint32_t usec_pqn=(uint32_t)((60/(float)tempo) * 1000 * 1000);
putc((usec_pqn>>16) & 0xFF,midi_file);
putc((usec_pqn>>8) & 0xFF,midi_file);
putc((usec_pqn) & 0xFF,midi_file);
}

// 0 delay
write_var_len(0,midi_file);
// end of track
putc(0xFF,midi_file);
putc(0x2F,midi_file);
putc(0,midi_file);
}

for(int i=0; i<tracknum; i++)
{
putc('M',midi_file);
Expand Down

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