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added comment describing Mac0 format

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svn-id: r10115
This commit is contained in:
Max Horn 2003-09-08 23:18:11 +00:00
parent aa61764b2f
commit b8d72d8854
1 changed files with 52 additions and 1 deletions
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53
scumm/resource.cpp
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@ -837,10 +837,61 @@ int Scumm::readSoundResource(int type, int idx) {
Maybe I am mistaken when I think it's four byte, some other parts
seem to suggest it's 2 byte oriented, or even variable length...
*/
*/
/*
From Markus Magnuson (superqult) we got this information:
Mac0
---
4 bytes - 'SOUN'
BE 4 bytes - block length
4 bytes - 'Mac0'
BE 4 bytes - (blockLength - 27)
28 bytes - ???
do this three times (once for each channel):
4 bytes - 'Chan'
BE 4 bytes - channel length
4 bytes - instrument name (e.g. 'MARI')
do this for ((chanLength-24)/4) times:
2 bytes - note duration
1 byte - note value
1 byte - note velocity
4 bytes - ???
4 bytes - 'Loop'/'Done'
4 bytes - ???
1 byte - 0x09
---
Instruments:
"MARI" - Marimba
"PLUC" - Pizzicato Strings
"HARM" - Harmonica
"PIPE" - Church Organ?
"TROM" - Trombone
"STRI" - String Ensemble
"HORN" - French Horn?
"VIBE" - Vibraphone
"SHAK" - Shakuhachi?
"PANP" - Pan Flute
"WHIS" - Whistle/Bottle
"ORGA" - Drawbar Organ
"BONG" - Woodblock?
"BASS" - Bass
Now the task could be to convert this into MIDI, to be fed into iMuse.
Or we do something similiar to what is done in Player_V3, assuming
we can identify SFX in the MI datafiles for each of the instruments
listed above.
*/
_fileHandle.seek(-12, SEEK_CUR);
total_size = _fileHandle.readUint32BE();
_fileHandle.read(createResource(type, idx, total_size), total_size - 8);
// dumpResource("sound-", idx, getResourceAddress(type, idx));
return 1;
} else if (basetag == MKID('Mac1')) {
_fileHandle.seek(-12, SEEK_CUR);