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AUDIO: Read in all QuickTime MIDI track data

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This commit is contained in:
Matthew Hoops 2012-09-06 14:18:20 -04:00
parent 834ca0e045
commit cc309f4d16
2 changed files with 81 additions and 3 deletions
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74
audio/midiparser_qt.cpp
View File

@ -39,7 +39,12 @@ bool MidiParser_QT::loadMusic(byte *data, uint32 size) {
void MidiParser_QT::unloadMusic() {
MidiParser::unloadMusic();
close();
// TODO
// Unlike those lesser formats, we *do* hold track data
for (uint i = 0; i < _trackInfo.size(); i++)
free(_trackInfo[i].data);
_trackInfo.clear();
}
bool MidiParser_QT::loadFromTune(Common::SeekableReadStream *stream, DisposeAfterUse::Flag disposeAfterUse) {
@ -55,8 +60,18 @@ bool MidiParser_QT::loadFromTune(Common::SeekableReadStream *stream, DisposeAfte
stream->readUint16BE(); // reserved
stream->readUint16BE(); // index
// TODO
readNoteRequestList(stream);
MIDITrackInfo trackInfo;
trackInfo.noteRequests = readNoteRequestList(stream);
uint32 trackSize = stream->size() - stream->pos();
assert(trackSize > 0);
trackInfo.data = (byte *)malloc(trackSize);
stream->read(trackInfo.data, trackSize);
_trackInfo.push_back(trackInfo);
initCommon();
return true;
}
@ -153,9 +168,62 @@ MidiParser_QT::NoteRequestList MidiParser_QT::readNoteRequestList(Common::Seekab
}
void MidiParser_QT::initFromContainerTracks() {
const Common::Array<Common::QuickTimeParser::Track *> &tracks = Common::QuickTimeParser::_tracks;
for (uint32 i = 0; i < tracks.size(); i++) {
if (tracks[i]->codecType == CODEC_TYPE_MIDI) {
assert(tracks[i]->sampleDescs.size() == 1);
if (tracks[i]->editCount != 1)
warning("Unhandled QuickTime MIDI edit lists, things may go awry");
MIDISampleDesc *entry = (MIDISampleDesc *)tracks[i]->sampleDescs[0];
MIDITrackInfo trackInfo;
trackInfo.noteRequests = entry->_noteRequests;
trackInfo.data = readWholeTrack(tracks[i]);
_trackInfo.push_back(trackInfo);
}
}
initCommon();
}
void MidiParser_QT::initCommon() {
// Now we have all our info needed in _trackInfo from whatever container
// form, we can fill in the MidiParser tracks.
// TODO
}
byte *MidiParser_QT::readWholeTrack(Common::QuickTimeParser::Track *track) {
// This just goes through all chunks and
Common::MemoryWriteStreamDynamic output;
uint32 curSample = 0;
for (uint i = 0; i < track->chunkCount; i++) {
_fd->seek(track->chunkOffsets[i]);
uint32 sampleCount = 0;
for (uint32 j = 0; j < track->sampleToChunkCount; j++)
if (i >= track->sampleToChunk[j].first)
sampleCount = track->sampleToChunk[j].count;
for (uint32 j = 0; j < sampleCount; j++, curSample++) {
uint32 size = (track->sampleSize != 0) ? track->sampleSize : track->sampleSizes[curSample];
byte *data = new byte[size];
_fd->read(data, size);
output.write(data, size);
delete[] data;
}
}
return output.getData();
}
MidiParser *MidiParser::createParser_QT() {
return new MidiParser_QT();
}

10
audio/midiparser_qt.h
View File

@ -72,6 +72,11 @@ private:
typedef Common::Array<NoteRequest> NoteRequestList;
struct MIDITrackInfo {
NoteRequestList noteRequests;
byte *data;
};
class MIDISampleDesc : public SampleDesc {
public:
MIDISampleDesc(Common::QuickTimeParser::Track *parentTrack, uint32 codecTag);
@ -84,7 +89,12 @@ private:
Common::Rational readFixed(Common::SeekableReadStream *stream);
NoteRequestList readNoteRequestList(Common::SeekableReadStream *stream);
byte *readWholeTrack(Common::QuickTimeParser::Track *track);
Common::Array<MIDITrackInfo> _trackInfo;
void initFromContainerTracks();
void initCommon();
};
#endif