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Working Studio implementation

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This commit is contained in:
Jack Andersen
2016-07-13 18:54:46 -10:00
parent d3d5595422
commit 2dcb9dd1c7
68 changed files with 1981 additions and 2098 deletions
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79
lib/SongState.cpp
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@@ -100,19 +100,18 @@ void SongState::Track::Header::swapBig()
SongState::Track::Track(SongState& parent, uint8_t midiChan, const TrackRegion* regions)
: m_parent(parent), m_midiChan(midiChan), m_curRegion(nullptr), m_nextRegion(regions)
{
for (int i=0 ; i<128 ; ++i)
for (int i = 0; i < 128; ++i)
m_remNoteLengths[i] = INT_MIN;
}
void SongState::Track::setRegion(Sequencer* seq, const TrackRegion* region)
{
m_curRegion = region;
uint32_t regionIdx = (m_parent.m_bigEndian ? SBig(m_curRegion->m_regionIndex) :
m_curRegion->m_regionIndex);
uint32_t regionIdx = (m_parent.m_bigEndian ? SBig(m_curRegion->m_regionIndex) : m_curRegion->m_regionIndex);
m_nextRegion = &m_curRegion[1];
m_data = m_parent.m_songData + (m_parent.m_bigEndian ? SBig(m_parent.m_regionIdx[regionIdx]) :
m_parent.m_regionIdx[regionIdx]);
m_data = m_parent.m_songData +
(m_parent.m_bigEndian ? SBig(m_parent.m_regionIdx[regionIdx]) : m_parent.m_regionIdx[regionIdx]);
Header header = *reinterpret_cast<const Header*>(m_data);
if (m_parent.m_bigEndian)
@@ -138,18 +137,15 @@ void SongState::Track::setRegion(Sequencer* seq, const TrackRegion* region)
m_eventWaitCountdown = int32_t(DecodeTimeRLE(m_data));
else
{
int32_t absTick = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const int32_t*>(m_data)) :
*reinterpret_cast<const int32_t*>(m_data));
int32_t absTick = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const int32_t*>(m_data))
: *reinterpret_cast<const int32_t*>(m_data));
m_eventWaitCountdown = absTick;
m_lastN64EventTick = absTick;
m_data += 4;
}
}
void SongState::Track::advanceRegion(Sequencer* seq)
{
setRegion(seq, m_nextRegion);
}
void SongState::Track::advanceRegion(Sequencer* seq) { setRegion(seq, m_nextRegion); }
int SongState::DetectVersion(const unsigned char* ptr, bool& isBig)
{
@@ -162,19 +158,19 @@ int SongState::DetectVersion(const unsigned char* ptr, bool& isBig)
/* First determine maximum index of MIDI regions across all tracks */
uint32_t maxRegionIdx = 0;
for (int i=0 ; i<64 ; ++i)
for (int i = 0; i < 64; ++i)
{
if (trackIdx[i])
{
const TrackRegion* region = nullptr;
const TrackRegion* nextRegion = reinterpret_cast<const TrackRegion*>(ptr + (isBig ? SBig(trackIdx[i]) : trackIdx[i]));
const TrackRegion* nextRegion =
reinterpret_cast<const TrackRegion*>(ptr + (isBig ? SBig(trackIdx[i]) : trackIdx[i]));
/* Iterate all regions */
while (nextRegion->indexValid(isBig))
{
region = nextRegion;
uint32_t regionIdx = (isBig ? SBig(region->m_regionIndex) :
region->m_regionIndex);
uint32_t regionIdx = (isBig ? SBig(region->m_regionIndex) : region->m_regionIndex);
maxRegionIdx = std::max(maxRegionIdx, regionIdx);
nextRegion = &region[1];
}
@@ -182,37 +178,37 @@ int SongState::DetectVersion(const unsigned char* ptr, bool& isBig)
}
/* Perform 2 trials, first assuming revised format (more likely) */
int v=1;
for (; v>=0 ; --v)
int v = 1;
for (; v >= 0; --v)
{
bool bad = false;
/* Validate all tracks */
for (int i=0 ; i<64 ; ++i)
for (int i = 0; i < 64; ++i)
{
if (trackIdx[i])
{
const TrackRegion* region = nullptr;
const TrackRegion* nextRegion = reinterpret_cast<const TrackRegion*>(ptr + (isBig ? SBig(trackIdx[i]) : trackIdx[i]));
const TrackRegion* nextRegion =
reinterpret_cast<const TrackRegion*>(ptr + (isBig ? SBig(trackIdx[i]) : trackIdx[i]));
/* Iterate all regions */
while (nextRegion->indexValid(isBig))
{
region = nextRegion;
uint32_t regionIdx = (isBig ? SBig(region->m_regionIndex) :
region->m_regionIndex);
uint32_t regionIdx = (isBig ? SBig(region->m_regionIndex) : region->m_regionIndex);
nextRegion = &region[1];
const unsigned char* data = ptr + (isBig ? SBig(regionIdxTable[regionIdx]) :
regionIdxTable[regionIdx]);
const unsigned char* data =
ptr + (isBig ? SBig(regionIdxTable[regionIdx]) : regionIdxTable[regionIdx]);
/* Can't reliably validate final region */
if (regionIdx == maxRegionIdx)
continue;
/* Expected end pointer (next region) */
const unsigned char* expectedEnd = ptr + (isBig ? SBig(regionIdxTable[regionIdx+1]) :
regionIdxTable[regionIdx+1]);
const unsigned char* expectedEnd =
ptr + (isBig ? SBig(regionIdxTable[regionIdx + 1]) : regionIdxTable[regionIdx + 1]);
Track::Header header = *reinterpret_cast<const Track::Header*>(data);
if (isBig)
@@ -223,7 +219,10 @@ int SongState::DetectVersion(const unsigned char* ptr, bool& isBig)
if (header.m_pitchOff)
{
const unsigned char* dptr = ptr + header.m_pitchOff;
while (DecodeRLE(dptr) != 0xffffffff) {DecodeContinuousRLE(dptr);}
while (DecodeRLE(dptr) != 0xffffffff)
{
DecodeContinuousRLE(dptr);
}
if (dptr >= (expectedEnd - 4) && (dptr <= expectedEnd))
continue;
}
@@ -232,7 +231,10 @@ int SongState::DetectVersion(const unsigned char* ptr, bool& isBig)
if (header.m_modOff)
{
const unsigned char* dptr = ptr + header.m_modOff;
while (DecodeRLE(dptr) != 0xffffffff) {DecodeContinuousRLE(dptr);}
while (DecodeRLE(dptr) != 0xffffffff)
{
DecodeContinuousRLE(dptr);
}
if (dptr >= (expectedEnd - 4) && (dptr <= expectedEnd))
continue;
}
@@ -337,11 +339,12 @@ bool SongState::initialize(const unsigned char* ptr)
const uint8_t* chanMap = reinterpret_cast<const uint8_t*>(ptr + m_header.m_chanMapOff);
/* Initialize all tracks */
for (int i=0 ; i<64 ; ++i)
for (int i = 0; i < 64; ++i)
{
if (trackIdx[i])
{
const TrackRegion* region = reinterpret_cast<const TrackRegion*>(ptr + (m_bigEndian ? SBig(trackIdx[i]) : trackIdx[i]));
const TrackRegion* region =
reinterpret_cast<const TrackRegion*>(ptr + (m_bigEndian ? SBig(trackIdx[i]) : trackIdx[i]));
m_tracks[i].emplace(*this, chanMap[i], region);
}
else
@@ -368,8 +371,7 @@ bool SongState::Track::advance(Sequencer& seq, int32_t ticks)
/* Advance region if needed */
while (m_nextRegion->indexValid(m_parent.m_bigEndian))
{
uint32_t nextRegTick = (m_parent.m_bigEndian ? SBig(m_nextRegion->m_startTick) :
m_nextRegion->m_startTick);
uint32_t nextRegTick = (m_parent.m_bigEndian ? SBig(m_nextRegion->m_startTick) : m_nextRegion->m_startTick);
if (endTick > nextRegTick)
advanceRegion(&seq);
else
@@ -377,7 +379,7 @@ bool SongState::Track::advance(Sequencer& seq, int32_t ticks)
}
/* Stop finished notes */
for (int i=0 ; i<128 ; ++i)
for (int i = 0; i < 128; ++i)
{
if (m_remNoteLengths[i] != INT_MIN)
{
@@ -501,8 +503,8 @@ bool SongState::Track::advance(Sequencer& seq, int32_t ticks)
/* Note */
uint8_t note = m_data[0] & 0x7f;
uint8_t vel = m_data[1] & 0x7f;
uint16_t length = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const uint16_t*>(m_data + 2)) :
*reinterpret_cast<const uint16_t*>(m_data + 2));
uint16_t length = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const uint16_t*>(m_data + 2))
: *reinterpret_cast<const uint16_t*>(m_data + 2));
seq.keyOn(m_midiChan, note, vel);
m_remNoteLengths[note] = length;
m_data += 4;
@@ -538,8 +540,8 @@ bool SongState::Track::advance(Sequencer& seq, int32_t ticks)
if ((m_data[2] & 0x80) != 0x80)
{
/* Note */
uint16_t length = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const uint16_t*>(m_data)) :
*reinterpret_cast<const uint16_t*>(m_data));
uint16_t length = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const uint16_t*>(m_data))
: *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);
@@ -562,8 +564,8 @@ bool SongState::Track::advance(Sequencer& seq, int32_t ticks)
}
/* Set next delta-time */
int32_t absTick = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const int32_t*>(m_data)) :
*reinterpret_cast<const int32_t*>(m_data));
int32_t absTick = (m_parent.m_bigEndian ? SBig(*reinterpret_cast<const int32_t*>(m_data))
: *reinterpret_cast<const int32_t*>(m_data));
m_eventWaitCountdown += absTick - m_lastN64EventTick;
m_lastN64EventTick = absTick;
m_data += 4;
@@ -628,5 +630,4 @@ bool SongState::advance(Sequencer& seq, double dt)
m_songState = SongPlayState::Stopped;
return done;
}
}