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Initial N64 SNG support; pitch-wheel fix

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This commit is contained in:
Jack Andersen
2016-06-19 17:35:57 -10:00
parent d2a8430746
commit ee29fb4b1e
7 changed files with 247 additions and 105 deletions
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224
lib/SongState.cpp
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@@ -68,28 +68,21 @@ static uint32_t DecodeTimeRLE(const unsigned char*& data)
void SongState::Header::swapBig()
{
m_version = SBig(m_version);
m_chanIdxOff = SBig(m_chanIdxOff);
m_trackIdxOff = SBig(m_trackIdxOff);
m_regionIdxOff = SBig(m_regionIdxOff);
m_chanMapOff = SBig(m_chanMapOff);
m_tempoTableOff = SBig(m_tempoTableOff);
m_initialTempo = SBig(m_initialTempo);
m_unkOff = SBig(m_unkOff);
for (int i=0 ; i<64 ; ++i)
m_chanOffs[i] = SBig(m_chanOffs[i]);
}
void SongState::ChanHeader::swapBig()
void SongState::TrackRegion::swapBig()
{
m_startTick = SBig(m_startTick);
m_unk1 = SBig(m_unk1);
m_unk2 = SBig(m_unk2);
m_dataIndex = SBig(m_dataIndex);
m_unk3 = SBig(m_unk3);
m_startTick2 = SBig(m_startTick2);
m_unk4 = SBig(m_unk4);
m_unk5 = SBig(m_unk5);
m_unk6 = SBig(m_unk6);
m_unk7 = SBig(m_unk7);
m_regionIndex = SBig(m_regionIndex);
m_initialPitch = SBig(m_initialPitch);
}
void SongState::TempoChange::swapBig()
@@ -105,47 +98,69 @@ void SongState::Channel::Header::swapBig()
m_modOff = SBig(m_modOff);
}
SongState::Channel::Channel(SongState& parent, uint8_t midiChan, uint32_t startTick,
const unsigned char* song, const unsigned char* chan)
: m_parent(parent), m_midiChan(midiChan), m_startTick(startTick), m_dataBase(chan + 12)
{
m_data = m_dataBase;
SongState::Channel::Channel(SongState& parent, uint8_t midiChan, const TrackRegion* regions)
: m_parent(parent), m_midiChan(midiChan), m_curRegion(nullptr), m_nextRegion(regions)
{}
Header header = *reinterpret_cast<const Header*>(chan);
void SongState::Channel::setRegion(Sequencer& seq, const TrackRegion* region)
{
assert(region->m_regionIndex != 0xffff);
m_curRegion = region;
uint32_t regionIdx = SBig(m_curRegion->m_regionIndex);
m_nextRegion = &m_curRegion[1];
m_data = m_parent.m_songData + SBig(m_parent.m_regionIdx[regionIdx]);
Header header = *reinterpret_cast<const Header*>(m_data);
header.swapBig();
if (header.m_type != 8)
{
m_data = nullptr;
return;
}
assert(header.m_type == 8);
m_data += 12;
if (header.m_pitchOff)
m_pitchWheelData = song + header.m_pitchOff;
m_pitchWheelData = m_parent.m_songData + header.m_pitchOff;
if (header.m_modOff)
m_modWheelData = song + header.m_modOff;
m_modWheelData = m_parent.m_songData + header.m_modOff;
m_waitCountdown = startTick;
m_lastPitchTick = startTick;
m_lastModTick = startTick;
m_waitCountdown += int32_t(DecodeTimeRLE(m_data));
m_eventWaitCountdown = 0;
m_lastPitchTick = m_parent.m_curTick;
//m_lastPitchVal = SBig(m_curRegion->m_initialPitch);
m_lastPitchVal = 0;
seq.setPitchWheel(m_midiChan, clamp(-1.f, m_lastPitchVal / 32768.f, 1.f));
m_lastModTick = m_parent.m_curTick;
m_lastModVal = 0;
seq.setCtrlValue(m_midiChan, 1, clamp(0, m_lastModVal * 128 / 16384, 127));
if (m_parent.m_header.m_trackIdxOff == 0x18 || m_parent.m_header.m_trackIdxOff == 0x58)
m_eventWaitCountdown = int32_t(DecodeTimeRLE(m_data));
else
{
int32_t absTick = SBig(*reinterpret_cast<const int32_t*>(m_data));
m_eventWaitCountdown = absTick;
m_lastN64EventTick = absTick;
m_data += 4;
}
}
void SongState::Channel::advanceRegion(Sequencer& seq)
{
setRegion(seq, m_nextRegion);
}
void SongState::initialize(const unsigned char* ptr)
{
m_songData = ptr;
m_header = *reinterpret_cast<const Header*>(ptr);
m_header.swapBig();
const uint32_t* trackIdx = reinterpret_cast<const uint32_t*>(ptr + m_header.m_trackIdxOff);
m_regionIdx = reinterpret_cast<const uint32_t*>(ptr + m_header.m_regionIdxOff);
const uint8_t* chanMap = reinterpret_cast<const uint8_t*>(ptr + m_header.m_chanMapOff);
/* Initialize all channels */
for (int i=0 ; i<64 ; ++i)
{
if (m_header.m_chanOffs[i])
if (trackIdx[i])
{
ChanHeader cHeader = *reinterpret_cast<const ChanHeader*>(ptr + m_header.m_chanOffs[i]);
cHeader.swapBig();
const uint32_t* chanIdx = reinterpret_cast<const uint32_t*>(ptr + m_header.m_chanIdxOff);
const uint8_t* chanMap = reinterpret_cast<const uint8_t*>(ptr + m_header.m_chanMapOff);
m_channels[i].emplace(*this, chanMap[i], cHeader.m_startTick, ptr,
ptr + SBig(chanIdx[cHeader.m_dataIndex]));
const TrackRegion* region = reinterpret_cast<const TrackRegion*>(ptr + SBig(trackIdx[i]));
m_channels[i].emplace(*this, chanMap[i], region);
}
else
m_channels[i] = std::experimental::nullopt;
@@ -164,11 +179,21 @@ void SongState::initialize(const unsigned char* ptr)
bool SongState::Channel::advance(Sequencer& seq, int32_t ticks)
{
if (!m_data)
return true;
int32_t endTick = m_parent.m_curTick + ticks;
/* Advance region if needed */
while (m_nextRegion->m_regionIndex != 0xffff)
{
uint32_t nextRegTick = SBig(m_nextRegion->m_startTick);
if (endTick > nextRegTick)
advanceRegion(seq);
else
break;
}
if (!m_data)
return m_nextRegion->m_regionIndex == 0xffff;
/* Update continuous pitch data */
if (m_pitchWheelData)
{
@@ -224,7 +249,7 @@ bool SongState::Channel::advance(Sequencer& seq, int32_t ticks)
m_lastModTick = nextTick;
remModTicks -= (nextTick - modTick);
modTick = nextTick;
seq.setCtrlValue(m_midiChan, 1, clamp(0, (m_lastModVal + 8192) * 128 / 16384, 127));
seq.setCtrlValue(m_midiChan, 1, clamp(0, m_lastModVal * 128 / 16384, 127));
continue;
}
remModTicks -= (nextTick - modTick);
@@ -251,45 +276,100 @@ bool SongState::Channel::advance(Sequencer& seq, int32_t ticks)
}
/* Loop through as many commands as we can for this time period */
while (true)
if (m_parent.m_header.m_trackIdxOff == 0x18 || m_parent.m_header.m_trackIdxOff == 0x58)
{
/* Advance wait timer if active, returning if waiting */
if (m_waitCountdown)
/* GameCube */
while (true)
{
m_waitCountdown -= ticks;
ticks = 0;
if (m_waitCountdown > 0)
return false;
}
/* Advance wait timer if active, returning if waiting */
if (m_eventWaitCountdown)
{
m_eventWaitCountdown -= ticks;
ticks = 0;
if (m_eventWaitCountdown > 0)
return false;
}
/* Load next command */
if (*reinterpret_cast<const uint16_t*>(m_data) == 0xffff)
{
/* End of channel */
m_data = nullptr;
return true;
/* Load next command */
if (*reinterpret_cast<const uint16_t*>(m_data) == 0xffff)
{
/* End of channel */
m_data = nullptr;
return m_nextRegion->m_regionIndex == 0xffff;
}
else if (m_data[0] & 0x80)
{
/* Control change */
uint8_t val = m_data[0] & 0x7f;
uint8_t ctrl = m_data[1] & 0x7f;
seq.setCtrlValue(m_midiChan, ctrl, val);
m_data += 2;
}
else
{
/* Note */
uint8_t note = m_data[0] & 0x7f;
uint8_t vel = m_data[1] & 0x7f;
uint16_t length = SBig(*reinterpret_cast<const uint16_t*>(m_data + 2));
seq.keyOn(m_midiChan, note, vel);
m_remNoteLengths[note] = length;
m_data += 4;
}
/* Set next delta-time */
m_eventWaitCountdown += int32_t(DecodeTimeRLE(m_data));
}
else if (m_data[0] & 0x80)
}
else
{
/* N64 */
while (true)
{
/* Control change */
uint8_t val = m_data[0] & 0x7f;
uint8_t ctrl = m_data[1] & 0x7f;
seq.setCtrlValue(m_midiChan, ctrl, val);
m_data += 2;
}
else
{
/* Note */
uint8_t note = m_data[0] & 0x7f;
uint8_t vel = m_data[1] & 0x7f;
uint16_t length = SBig(*reinterpret_cast<const uint16_t*>(m_data + 2));
seq.keyOn(m_midiChan, note, vel);
m_remNoteLengths[note] = length;
/* Advance wait timer if active, returning if waiting */
if (m_eventWaitCountdown)
{
m_eventWaitCountdown -= ticks;
ticks = 0;
if (m_eventWaitCountdown > 0)
return false;
}
/* Load next command */
if (*reinterpret_cast<const uint32_t*>(m_data) == 0xffff0000)
{
/* End of channel */
m_data = nullptr;
return m_nextRegion->m_regionIndex == 0xffff;
}
else if (m_data[0] & 0x80)
{
/* Control change */
uint8_t val = m_data[0] & 0x7f;
uint8_t ctrl = m_data[1] & 0x7f;
seq.setCtrlValue(m_midiChan, ctrl, val);
m_data += 2;
}
else
{
if ((m_data[2] & 0x80) != 0x80)
{
/* Note */
uint16_t length = SBig(*reinterpret_cast<const uint16_t*>(m_data));
uint8_t note = m_data[2] & 0x7f;
uint8_t vel = m_data[3] & 0x7f;
seq.keyOn(m_midiChan, note, vel);
m_remNoteLengths[note] = length;
}
m_data += 4;
}
/* Set next delta-time */
int32_t absTick = SBig(*reinterpret_cast<const int32_t*>(m_data));
assert(absTick >= m_lastN64EventTick);
m_eventWaitCountdown += absTick - m_lastN64EventTick;
m_lastN64EventTick = absTick;
m_data += 4;
}
/* Set next delta-time */
m_waitCountdown += int32_t(DecodeTimeRLE(m_data));
}
return false;