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winamp/Src/external_dependencies/openmpt-trunk/soundlib/Load_dbm.cpp

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/*
* Load_dbm.cpp
* ------------
* Purpose: DigiBooster Pro module Loader (DBM)
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Loaders.h"
#include "../common/mptStringBuffer.h"
#ifndef NO_PLUGINS
#include "plugins/DigiBoosterEcho.h"
#endif // NO_PLUGINS
#ifdef LIBOPENMPT_BUILD
#define MPT_DBM_USE_REAL_SUBSONGS
#endif
OPENMPT_NAMESPACE_BEGIN
struct DBMFileHeader
{
char dbm0[4];
uint8 trkVerHi;
uint8 trkVerLo;
char reserved[2];
};
MPT_BINARY_STRUCT(DBMFileHeader, 8)
// IFF-style Chunk
struct DBMChunk
{
// 32-Bit chunk identifiers
enum ChunkIdentifiers
{
idNAME = MagicBE("NAME"),
idINFO = MagicBE("INFO"),
idSONG = MagicBE("SONG"),
idINST = MagicBE("INST"),
idVENV = MagicBE("VENV"),
idPENV = MagicBE("PENV"),
idPATT = MagicBE("PATT"),
idPNAM = MagicBE("PNAM"),
idSMPL = MagicBE("SMPL"),
idDSPE = MagicBE("DSPE"),
idMPEG = MagicBE("MPEG"),
};
uint32be id;
uint32be length;
size_t GetLength() const
{
return length;
}
ChunkIdentifiers GetID() const
{
return static_cast<ChunkIdentifiers>(id.get());
}
};
MPT_BINARY_STRUCT(DBMChunk, 8)
struct DBMInfoChunk
{
uint16be instruments;
uint16be samples;
uint16be songs;
uint16be patterns;
uint16be channels;
};
MPT_BINARY_STRUCT(DBMInfoChunk, 10)
// Instrument header
struct DBMInstrument
{
enum DBMInstrFlags
{
smpLoop = 0x01,
smpPingPongLoop = 0x02,
};
char name[30];
uint16be sample; // Sample reference
uint16be volume; // 0...64
uint32be sampleRate;
uint32be loopStart;
uint32be loopLength;
int16be panning; // -128...128
uint16be flags; // See DBMInstrFlags
};
MPT_BINARY_STRUCT(DBMInstrument, 50)
// Volume or panning envelope
struct DBMEnvelope
{
enum DBMEnvelopeFlags
{
envEnabled = 0x01,
envSustain = 0x02,
envLoop = 0x04,
};
uint16be instrument;
uint8be flags; // See DBMEnvelopeFlags
uint8be numSegments; // Number of envelope points - 1
uint8be sustain1;
uint8be loopBegin;
uint8be loopEnd;
uint8be sustain2; // Second sustain point
uint16be data[2 * 32];
};
MPT_BINARY_STRUCT(DBMEnvelope, 136)
// Note: Unlike in MOD, 1Fx, 2Fx, 5Fx / 5xF, 6Fx / 6xF and AFx / AxF are fine slides.
static constexpr ModCommand::COMMAND dbmEffects[] =
{
CMD_ARPEGGIO, CMD_PORTAMENTOUP, CMD_PORTAMENTODOWN, CMD_TONEPORTAMENTO,
CMD_VIBRATO, CMD_TONEPORTAVOL, CMD_VIBRATOVOL, CMD_TREMOLO,
CMD_PANNING8, CMD_OFFSET, CMD_VOLUMESLIDE, CMD_POSITIONJUMP,
CMD_VOLUME, CMD_PATTERNBREAK, CMD_MODCMDEX, CMD_TEMPO,
CMD_GLOBALVOLUME, CMD_GLOBALVOLSLIDE, CMD_NONE, CMD_NONE,
CMD_KEYOFF, CMD_SETENVPOSITION, CMD_NONE, CMD_NONE,
CMD_NONE, CMD_PANNINGSLIDE, CMD_NONE, CMD_NONE,
CMD_NONE, CMD_NONE, CMD_NONE,
#ifndef NO_PLUGINS
CMD_DBMECHO, // Toggle DSP
CMD_MIDI, // Wxx Echo Delay
CMD_MIDI, // Xxx Echo Feedback
CMD_MIDI, // Yxx Echo Mix
CMD_MIDI, // Zxx Echo Cross
#endif // NO_PLUGINS
};
static void ConvertDBMEffect(uint8 &command, uint8 &param)
{
uint8 oldCmd = command;
if(command < std::size(dbmEffects))
command = dbmEffects[command];
else
command = CMD_NONE;
switch(command)
{
case CMD_ARPEGGIO:
if(param == 0)
command = CMD_NONE;
break;
case CMD_PATTERNBREAK:
param = ((param >> 4) * 10) + (param & 0x0F);
break;
#ifdef MODPLUG_TRACKER
case CMD_VIBRATO:
if(param & 0x0F)
{
// DBM vibrato is half as deep as most other trackers. Convert it to IT fine vibrato range if possible.
uint8 depth = (param & 0x0F) * 2u;
param &= 0xF0;
if(depth < 16)
command = CMD_FINEVIBRATO;
else
depth = (depth + 2u) / 4u;
param |= depth;
}
break;
#endif
// Volume slide nibble priority - first nibble (slide up) has precedence.
case CMD_VOLUMESLIDE:
case CMD_TONEPORTAVOL:
case CMD_VIBRATOVOL:
if((param & 0xF0) != 0x00 && (param & 0xF0) != 0xF0 && (param & 0x0F) != 0x0F)
param &= 0xF0;
break;
case CMD_GLOBALVOLUME:
if(param <= 64)
param *= 2;
else
param = 128;
break;
case CMD_MODCMDEX:
switch(param & 0xF0)
{
case 0x30: // Play backwards
command = CMD_S3MCMDEX;
param = 0x9F;
break;
case 0x40: // Turn off sound in channel (volume / portamento commands after this can't pick up the note anymore)
command = CMD_S3MCMDEX;
param = 0xC0;
break;
case 0x50: // Turn on/off channel
// TODO: Apparently this should also kill the playing note.
if((param & 0x0F) <= 0x01)
{
command = CMD_CHANNELVOLUME;
param = (param == 0x50) ? 0x00 : 0x40;
}
break;
case 0x70: // Coarse offset
command = CMD_S3MCMDEX;
param = 0xA0 | (param & 0x0F);
break;
default:
// Rest will be converted later from CMD_MODCMDEX to CMD_S3MCMDEX.
break;
}
break;
case CMD_TEMPO:
if(param <= 0x1F) command = CMD_SPEED;
break;
case CMD_KEYOFF:
if (param == 0)
{
// TODO key off at tick 0
}
break;
case CMD_MIDI:
// Encode echo parameters into fixed MIDI macros
param = 128 + (oldCmd - 32) * 32 + param / 8;
}
}
// Read a chunk of volume or panning envelopes
static void ReadDBMEnvelopeChunk(FileReader chunk, EnvelopeType envType, CSoundFile &sndFile, bool scaleEnv)
{
uint16 numEnvs = chunk.ReadUint16BE();
for(uint16 env = 0; env < numEnvs; env++)
{
DBMEnvelope dbmEnv;
chunk.ReadStruct(dbmEnv);
uint16 dbmIns = dbmEnv.instrument;
if(dbmIns > 0 && dbmIns <= sndFile.GetNumInstruments() && (sndFile.Instruments[dbmIns] != nullptr))
{
ModInstrument *mptIns = sndFile.Instruments[dbmIns];
InstrumentEnvelope &mptEnv = mptIns->GetEnvelope(envType);
if(dbmEnv.numSegments)
{
if(dbmEnv.flags & DBMEnvelope::envEnabled) mptEnv.dwFlags.set(ENV_ENABLED);
if(dbmEnv.flags & DBMEnvelope::envSustain) mptEnv.dwFlags.set(ENV_SUSTAIN);
if(dbmEnv.flags & DBMEnvelope::envLoop) mptEnv.dwFlags.set(ENV_LOOP);
}
uint8 numPoints = std::min(dbmEnv.numSegments.get(), uint8(31)) + 1;
mptEnv.resize(numPoints);
mptEnv.nLoopStart = dbmEnv.loopBegin;
mptEnv.nLoopEnd = dbmEnv.loopEnd;
mptEnv.nSustainStart = mptEnv.nSustainEnd = dbmEnv.sustain1;
for(uint8 i = 0; i < numPoints; i++)
{
mptEnv[i].tick = dbmEnv.data[i * 2];
uint16 val = dbmEnv.data[i * 2 + 1];
if(scaleEnv)
{
// Panning envelopes are -128...128 in DigiBooster Pro 3.x
val = (val + 128) / 4;
}
LimitMax(val, uint16(64));
mptEnv[i].value = static_cast<uint8>(val);
}
}
}
}
static bool ValidateHeader(const DBMFileHeader &fileHeader)
{
if(std::memcmp(fileHeader.dbm0, "DBM0", 4)
|| fileHeader.trkVerHi > 3)
{
return false;
}
return true;
}
CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderDBM(MemoryFileReader file, const uint64 *pfilesize)
{
DBMFileHeader fileHeader;
if(!file.ReadStruct(fileHeader))
{
return ProbeWantMoreData;
}
if(!ValidateHeader(fileHeader))
{
return ProbeFailure;
}
MPT_UNREFERENCED_PARAMETER(pfilesize);
return ProbeSuccess;
}
bool CSoundFile::ReadDBM(FileReader &file, ModLoadingFlags loadFlags)
{
file.Rewind();
DBMFileHeader fileHeader;
if(!file.ReadStruct(fileHeader))
{
return false;
}
if(!ValidateHeader(fileHeader))
{
return false;
}
if(loadFlags == onlyVerifyHeader)
{
return true;
}
ChunkReader chunkFile(file);
auto chunks = chunkFile.ReadChunks<DBMChunk>(1);
// Globals
DBMInfoChunk infoData;
if(!chunks.GetChunk(DBMChunk::idINFO).ReadStruct(infoData))
{
return false;
}
InitializeGlobals(MOD_TYPE_DBM);
InitializeChannels();
m_SongFlags = SONG_ITCOMPATGXX | SONG_ITOLDEFFECTS;
m_nChannels = Clamp<uint16, uint16>(infoData.channels, 1, MAX_BASECHANNELS); // note: MAX_BASECHANNELS is currently 127, but DBPro 2 supports up to 128 channels, DBPro 3 apparently up to 254.
m_nInstruments = std::min(static_cast<INSTRUMENTINDEX>(infoData.instruments), static_cast<INSTRUMENTINDEX>(MAX_INSTRUMENTS - 1));
m_nSamples = std::min(static_cast<SAMPLEINDEX>(infoData.samples), static_cast<SAMPLEINDEX>(MAX_SAMPLES - 1));
m_playBehaviour.set(kSlidesAtSpeed1);
m_playBehaviour.reset(kITVibratoTremoloPanbrello);
m_playBehaviour.reset(kITArpeggio);
m_modFormat.formatName = U_("DigiBooster Pro");
m_modFormat.type = U_("dbm");
m_modFormat.madeWithTracker = MPT_UFORMAT("DigiBooster Pro {}.{}")(mpt::ufmt::hex(fileHeader.trkVerHi), mpt::ufmt::hex(fileHeader.trkVerLo));
m_modFormat.charset = mpt::Charset::Amiga_no_C1;
// Name chunk
FileReader nameChunk = chunks.GetChunk(DBMChunk::idNAME);
nameChunk.ReadString<mpt::String::maybeNullTerminated>(m_songName, nameChunk.GetLength());
// Song chunk
FileReader songChunk = chunks.GetChunk(DBMChunk::idSONG);
Order().clear();
uint16 numSongs = infoData.songs;
for(uint16 i = 0; i < numSongs && songChunk.CanRead(46); i++)
{
char name[44];
songChunk.ReadString<mpt::String::maybeNullTerminated>(name, 44);
if(m_songName.empty())
{
m_songName = name;
}
uint16 numOrders = songChunk.ReadUint16BE();
#ifdef MPT_DBM_USE_REAL_SUBSONGS
if(!Order().empty())
{
// Add a new sequence for this song
if(Order.AddSequence() == SEQUENCEINDEX_INVALID)
break;
}
Order().SetName(mpt::ToUnicode(mpt::Charset::Amiga_no_C1, name));
ReadOrderFromFile<uint16be>(Order(), songChunk, numOrders);
#else
const ORDERINDEX startIndex = Order().GetLength();
if(startIndex < MAX_ORDERS && songChunk.CanRead(numOrders * 2u))
{
LimitMax(numOrders, static_cast<ORDERINDEX>(MAX_ORDERS - startIndex - 1));
Order().resize(startIndex + numOrders + 1);
for(uint16 ord = 0; ord < numOrders; ord++)
{
Order()[startIndex + ord] = static_cast<PATTERNINDEX>(songChunk.ReadUint16BE());
}
}
#endif // MPT_DBM_USE_REAL_SUBSONGS
}
#ifdef MPT_DBM_USE_REAL_SUBSONGS
Order.SetSequence(0);
#endif // MPT_DBM_USE_REAL_SUBSONGS
// Read instruments
if(FileReader instChunk = chunks.GetChunk(DBMChunk::idINST))
{
for(INSTRUMENTINDEX i = 1; i <= GetNumInstruments(); i++)
{
DBMInstrument instrHeader;
instChunk.ReadStruct(instrHeader);
ModInstrument *mptIns = AllocateInstrument(i, instrHeader.sample);
if(mptIns == nullptr || instrHeader.sample >= MAX_SAMPLES)
{
continue;
}
mptIns->name = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, instrHeader.name);
m_szNames[instrHeader.sample] = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, instrHeader.name);
mptIns->nFadeOut = 0;
mptIns->nPan = static_cast<uint16>(instrHeader.panning + 128);
LimitMax(mptIns->nPan, uint32(256));
mptIns->dwFlags.set(INS_SETPANNING);
// Sample Info
ModSample &mptSmp = Samples[instrHeader.sample];
mptSmp.Initialize();
mptSmp.nVolume = std::min(static_cast<uint16>(instrHeader.volume), uint16(64)) * 4u;
mptSmp.nC5Speed = Util::muldivr(instrHeader.sampleRate, 8303, 8363);
if(instrHeader.loopLength && (instrHeader.flags & (DBMInstrument::smpLoop | DBMInstrument::smpPingPongLoop)))
{
mptSmp.nLoopStart = instrHeader.loopStart;
mptSmp.nLoopEnd = mptSmp.nLoopStart + instrHeader.loopLength;
mptSmp.uFlags.set(CHN_LOOP);
if(instrHeader.flags & DBMInstrument::smpPingPongLoop)
mptSmp.uFlags.set(CHN_PINGPONGLOOP);
}
}
// Read envelopes
ReadDBMEnvelopeChunk(chunks.GetChunk(DBMChunk::idVENV), ENV_VOLUME, *this, false);
ReadDBMEnvelopeChunk(chunks.GetChunk(DBMChunk::idPENV), ENV_PANNING, *this, fileHeader.trkVerHi > 2);
// Note-Off cuts samples if there's no envelope.
for(INSTRUMENTINDEX i = 1; i <= GetNumInstruments(); i++)
{
if(Instruments[i] != nullptr && !Instruments[i]->VolEnv.dwFlags[ENV_ENABLED])
{
Instruments[i]->nFadeOut = 32767;
}
}
}
// Patterns
FileReader patternChunk = chunks.GetChunk(DBMChunk::idPATT);
#ifndef NO_PLUGINS
bool hasEchoEnable = false, hasEchoParams = false;
#endif // NO_PLUGINS
if(patternChunk.IsValid() && (loadFlags & loadPatternData))
{
FileReader patternNameChunk = chunks.GetChunk(DBMChunk::idPNAM);
patternNameChunk.Skip(1); // Encoding, should be UTF-8 or ASCII
Patterns.ResizeArray(infoData.patterns);
std::vector<std::pair<EffectCommand, ModCommand::PARAM>> lostGlobalCommands;
for(PATTERNINDEX pat = 0; pat < infoData.patterns; pat++)
{
uint16 numRows = patternChunk.ReadUint16BE();
uint32 packedSize = patternChunk.ReadUint32BE();
FileReader chunk = patternChunk.ReadChunk(packedSize);
if(!Patterns.Insert(pat, numRows))
continue;
std::string patName;
patternNameChunk.ReadSizedString<uint8be, mpt::String::maybeNullTerminated>(patName);
Patterns[pat].SetName(patName);
PatternRow patRow = Patterns[pat].GetRow(0);
ROWINDEX row = 0;
lostGlobalCommands.clear();
while(chunk.CanRead(1))
{
const uint8 ch = chunk.ReadUint8();
if(!ch)
{
// End Of Row
for(const auto &cmd : lostGlobalCommands)
{
Patterns[pat].WriteEffect(EffectWriter(cmd.first, cmd.second).Row(row));
}
lostGlobalCommands.clear();
if(++row >= numRows)
break;
patRow = Patterns[pat].GetRow(row);
continue;
}
ModCommand dummy = ModCommand::Empty();
ModCommand &m = ch <= GetNumChannels() ? patRow[ch - 1] : dummy;
const uint8 b = chunk.ReadUint8();
if(b & 0x01)
{
uint8 note = chunk.ReadUint8();
if(note == 0x1F)
m.note = NOTE_KEYOFF;
else if(note > 0 && note < 0xFE)
m.note = ((note >> 4) * 12) + (note & 0x0F) + 13;
}
if(b & 0x02)
{
m.instr = chunk.ReadUint8();
}
if(b & 0x3C)
{
uint8 cmd1 = 0, cmd2 = 0, param1 = 0, param2 = 0;
if(b & 0x04) cmd2 = chunk.ReadUint8();
if(b & 0x08) param2 = chunk.ReadUint8();
if(b & 0x10) cmd1 = chunk.ReadUint8();
if(b & 0x20) param1 = chunk.ReadUint8();
ConvertDBMEffect(cmd1, param1);
ConvertDBMEffect(cmd2, param2);
if (cmd2 == CMD_VOLUME || (cmd2 == CMD_NONE && cmd1 != CMD_VOLUME))
{
std::swap(cmd1, cmd2);
std::swap(param1, param2);
}
const auto lostCommand = ModCommand::TwoRegularCommandsToMPT(cmd1, param1, cmd2, param2);
if(ModCommand::IsGlobalCommand(lostCommand.first, lostCommand.second))
lostGlobalCommands.insert(lostGlobalCommands.begin(), lostCommand); // Insert at front so that the last command of same type "wins"
m.volcmd = cmd1;
m.vol = param1;
m.command = cmd2;
m.param = param2;
#ifdef MODPLUG_TRACKER
m.ExtendedMODtoS3MEffect();
#endif // MODPLUG_TRACKER
#ifndef NO_PLUGINS
if(m.command == CMD_DBMECHO)
hasEchoEnable = true;
else if(m.command == CMD_MIDI)
hasEchoParams = true;
#endif // NO_PLUGINS
}
}
}
}
#ifndef NO_PLUGINS
// Echo DSP
if(loadFlags & loadPluginData)
{
if(hasEchoEnable)
{
// If there are any Vxx effects to dynamically enable / disable echo, use the CHN_NOFX flag.
for(CHANNELINDEX i = 0; i < m_nChannels; i++)
{
ChnSettings[i].nMixPlugin = 1;
ChnSettings[i].dwFlags.set(CHN_NOFX);
}
}
bool anyEnabled = hasEchoEnable;
// DBP 3 Documentation says that the defaults are 64/128/128/255, but they appear to be 80/150/80/255 in DBP 2.21
uint8 settings[8] = { 0, 80, 0, 150, 0, 80, 0, 255 };
if(FileReader dspChunk = chunks.GetChunk(DBMChunk::idDSPE))
{
uint16 maskLen = dspChunk.ReadUint16BE();
for(uint16 i = 0; i < maskLen; i++)
{
bool enabled = (dspChunk.ReadUint8() == 0);
if(i < m_nChannels)
{
if(hasEchoEnable)
{
// If there are any Vxx effects to dynamically enable / disable echo, use the CHN_NOFX flag.
ChnSettings[i].dwFlags.set(CHN_NOFX, !enabled);
} else if(enabled)
{
ChnSettings[i].nMixPlugin = 1;
anyEnabled = true;
}
}
}
dspChunk.ReadArray(settings);
}
if(anyEnabled)
{
// Note: DigiBooster Pro 3 has a more versatile per-channel echo effect.
// In this case, we'd have to create one plugin per channel.
SNDMIXPLUGIN &plugin = m_MixPlugins[0];
plugin.Destroy();
memcpy(&plugin.Info.dwPluginId1, "DBM0", 4);
memcpy(&plugin.Info.dwPluginId2, "Echo", 4);
plugin.Info.routingFlags = SNDMIXPLUGININFO::irAutoSuspend;
plugin.Info.mixMode = 0;
plugin.Info.gain = 10;
plugin.Info.reserved = 0;
plugin.Info.dwOutputRouting = 0;
std::fill(plugin.Info.dwReserved, plugin.Info.dwReserved + std::size(plugin.Info.dwReserved), 0);
plugin.Info.szName = "Echo";
plugin.Info.szLibraryName = "DigiBooster Pro Echo";
plugin.pluginData.resize(sizeof(DigiBoosterEcho::PluginChunk));
DigiBoosterEcho::PluginChunk chunk = DigiBoosterEcho::PluginChunk::Create(settings[1], settings[3], settings[5], settings[7]);
new (plugin.pluginData.data()) DigiBoosterEcho::PluginChunk(chunk);
}
}
// Encode echo parameters into fixed MIDI macros
if(hasEchoParams)
{
for(uint32 i = 0; i < 32; i++)
{
uint32 param = (i * 127u) / 32u;
m_MidiCfg.Zxx[i ] = MPT_AFORMAT("F0F080{}")(mpt::afmt::HEX0<2>(param));
m_MidiCfg.Zxx[i + 32] = MPT_AFORMAT("F0F081{}")(mpt::afmt::HEX0<2>(param));
m_MidiCfg.Zxx[i + 64] = MPT_AFORMAT("F0F082{}")(mpt::afmt::HEX0<2>(param));
m_MidiCfg.Zxx[i + 96] = MPT_AFORMAT("F0F083{}")(mpt::afmt::HEX0<2>(param));
}
}
#endif // NO_PLUGINS
// Samples
FileReader sampleChunk = chunks.GetChunk(DBMChunk::idSMPL);
if(sampleChunk.IsValid() && (loadFlags & loadSampleData))
{
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
{
uint32 sampleFlags = sampleChunk.ReadUint32BE();
uint32 sampleLength = sampleChunk.ReadUint32BE();
if(sampleFlags & 7)
{
ModSample &sample = Samples[smp];
sample.nLength = sampleLength;
SampleIO(
(sampleFlags & 4) ? SampleIO::_32bit : ((sampleFlags & 2) ? SampleIO::_16bit : SampleIO::_8bit),
SampleIO::mono,
SampleIO::bigEndian,
SampleIO::signedPCM)
.ReadSample(sample, sampleChunk);
}
}
}
#if defined(MPT_ENABLE_MP3_SAMPLES) && 0
// Compressed samples - this does not quite work yet...
FileReader mpegChunk = chunks.GetChunk(DBMChunk::idMPEG);
if(mpegChunk.IsValid() && (loadFlags & loadSampleData))
{
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
{
Samples[smp].nLength = mpegChunk.ReadUint32BE();
}
mpegChunk.Skip(2); // 0x00 0x40
// Read whole MPEG stream into one sample and then split it up.
FileReader chunk = mpegChunk.GetChunk(mpegChunk.BytesLeft());
if(ReadMP3Sample(0, chunk, true))
{
ModSample &srcSample = Samples[0];
const std::byte *smpData = srcSample.sampleb();
SmpLength predelay = Util::muldiv_unsigned(20116, srcSample.nC5Speed, 100000);
LimitMax(predelay, srcSample.nLength);
smpData += predelay * srcSample.GetBytesPerSample();
srcSample.nLength -= predelay;
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
{
ModSample &sample = Samples[smp];
sample.uFlags.set(srcSample.uFlags);
LimitMax(sample.nLength, srcSample.nLength);
if(sample.nLength)
{
sample.AllocateSample();
memcpy(sample.sampleb(), smpData, sample.GetSampleSizeInBytes());
smpData += sample.GetSampleSizeInBytes();
srcSample.nLength -= sample.nLength;
SmpLength gap = Util::muldiv_unsigned(454, srcSample.nC5Speed, 10000);
LimitMax(gap, srcSample.nLength);
smpData += gap * srcSample.GetBytesPerSample();
srcSample.nLength -= gap;
}
}
srcSample.FreeSample();
}
}
#endif // MPT_ENABLE_MP3_SAMPLES
return true;
}
OPENMPT_NAMESPACE_END
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