scummvm/audio/soundfont/vgmsamp.cpp
2020-08-07 10:10:12 +02:00

103 lines
2.4 KiB
C++

/*
* VGMTrans (c) 2002-2019
* Licensed under the zlib license,
* refer to the included LICENSE.txt file
*/
#include "vgmsamp.h"
// *******
// VGMSamp
// *******
VGMSamp::VGMSamp(VGMSampColl *sampColl, uint32 offset, uint32 length, uint32 dataOffset,
uint32 dataLen, uint8 nChannels, uint16 theBPS, uint32 theRate,
Common::String theName)
: parSampColl(sampColl),
sampName(theName),
VGMItem(sampColl->_vgmfile, offset, length),
dataOff(dataOffset),
dataLength(dataLen),
bps(theBPS),
rate(theRate),
ulUncompressedSize(0),
channels(nChannels),
pan(0),
unityKey(-1),
fineTune(0),
volume(-1),
waveType(WT_UNDEFINED),
bPSXLoopInfoPrioritizing(false) {
_name = sampName; // I would do this in the initialization list, but VGMItem()
// constructor is called before sampName is initialized,
// so data() ends up returning a bad pointer
}
VGMSamp::~VGMSamp() {}
double VGMSamp::GetCompressionRatio() {
return 1.0;
}
// ***********
// VGMSampColl
// ***********
VGMSampColl::VGMSampColl(RawFile *rawfile, uint32 offset, uint32 length,
Common::String theName)
: VGMFile(rawfile, offset, length, theName),
parInstrSet(NULL),
bLoaded(false),
sampDataOffset(0) {
AddContainer<VGMSamp>(samples);
}
VGMSampColl::VGMSampColl(RawFile *rawfile, VGMInstrSet *instrset,
uint32 offset, uint32 length, Common::String theName)
: VGMFile(rawfile, offset, length, theName),
parInstrSet(instrset),
bLoaded(false),
sampDataOffset(0) {
AddContainer<VGMSamp>(samples);
}
VGMSampColl::~VGMSampColl(void) {
DeleteVect<VGMSamp>(samples);
}
bool VGMSampColl::Load() {
if (bLoaded)
return true;
if (!GetHeaderInfo())
return false;
if (!GetSampleInfo())
return false;
if (samples.size() == 0)
return false;
if (_unLength == 0) {
for (Common::Array<VGMSamp *>::iterator itr = samples.begin(); itr != samples.end(); ++itr) {
VGMSamp *samp = (*itr);
// Some formats can have negative sample offset
// For example, Konami's SNES format and Hudson's SNES format
// TODO: Fix negative sample offset without breaking instrument
// assert(dwOffset <= samp->dwOffset);
// if (dwOffset > samp->dwOffset)
//{
// unLength += samp->dwOffset - dwOffset;
// dwOffset = samp->dwOffset;
//}
if (_dwOffset + _unLength < samp->_dwOffset + samp->_unLength) {
_unLength = (samp->_dwOffset + samp->_unLength) - _dwOffset;
}
}
}
bLoaded = true;
return true;
}