155 lines
4.6 KiB
C
155 lines
4.6 KiB
C
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/*
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* DLSBank.h
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* ---------
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* Purpose: Sound bank loading.
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* Notes : Supported sound bank types: DLS (including embedded DLS in MSS & RMI), SF2
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* Authors: Olivier Lapicque
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* OpenMPT Devs
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* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
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*/
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#pragma once
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#include "BuildSettings.h"
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OPENMPT_NAMESPACE_BEGIN
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class CSoundFile;
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OPENMPT_NAMESPACE_END
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#include "Snd_defs.h"
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OPENMPT_NAMESPACE_BEGIN
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#ifdef MODPLUG_TRACKER
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struct DLSREGION
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{
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uint32 ulLoopStart;
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uint32 ulLoopEnd;
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uint16 nWaveLink;
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uint16 uPercEnv;
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uint16 usVolume; // 0..256
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uint16 fuOptions; // flags + key group
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int16 sFineTune; // +128 = +1 semitone
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int16 panning = -1; // -1= unset (DLS), otherwise 0...256
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uint8 uKeyMin;
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uint8 uKeyMax;
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uint8 uUnityNote;
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uint8 tuning = 100;
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constexpr bool IsDummy() const noexcept { return uKeyMin == 0xFF || nWaveLink == Util::MaxValueOfType(nWaveLink); }
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};
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struct DLSENVELOPE
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{
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// Volume Envelope
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uint16 wVolAttack; // Attack Time: 0-1000, 1 = 20ms (1/50s) -> [0-20s]
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uint16 wVolDecay; // Decay Time: 0-1000, 1 = 20ms (1/50s) -> [0-20s]
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uint16 wVolRelease; // Release Time: 0-1000, 1 = 20ms (1/50s) -> [0-20s]
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uint8 nVolSustainLevel; // Sustain Level: 0-128, 128=100%
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uint8 nDefPan; // Default Pan
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};
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// Special Bank bits
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#define F_INSTRUMENT_DRUMS 0x80000000
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struct DLSINSTRUMENT
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{
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uint32 ulBank = 0, ulInstrument = 0;
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uint32 nMelodicEnv = 0;
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std::vector<DLSREGION> Regions;
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char szName[32];
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// SF2 stuff (DO NOT USE! -> used internally by the SF2 loader)
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uint16 wPresetBagNdx = 0, wPresetBagNum = 0;
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};
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struct DLSSAMPLEEX
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{
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char szName[20];
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uint32 dwLen;
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uint32 dwStartloop;
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uint32 dwEndloop;
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uint32 dwSampleRate;
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uint8 byOriginalPitch;
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int8 chPitchCorrection;
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};
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#define SOUNDBANK_TYPE_INVALID 0
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#define SOUNDBANK_TYPE_DLS 0x01
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#define SOUNDBANK_TYPE_SF2 0x02
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struct SOUNDBANKINFO
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{
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std::string szBankName,
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szCopyRight,
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szComments,
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szEngineer,
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szSoftware, // ISFT: Software
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szDescription; // ISBJ: Subject
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};
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struct IFFCHUNK;
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struct SF2LoaderInfo;
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class CDLSBank
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{
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protected:
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SOUNDBANKINFO m_BankInfo;
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mpt::PathString m_szFileName;
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size_t m_dwWavePoolOffset;
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uint32 m_nType;
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// DLS Information
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uint32 m_nMaxWaveLink;
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std::vector<size_t> m_WaveForms;
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std::vector<DLSINSTRUMENT> m_Instruments;
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std::vector<DLSSAMPLEEX> m_SamplesEx;
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std::vector<DLSENVELOPE> m_Envelopes;
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public:
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CDLSBank();
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static bool IsDLSBank(const mpt::PathString &filename);
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static uint32 MakeMelodicCode(uint32 bank, uint32 instr) { return ((bank << 16) | (instr));}
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static uint32 MakeDrumCode(uint32 rgn, uint32 instr) { return (0x80000000 | (rgn << 16) | (instr));}
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public:
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bool Open(const mpt::PathString &filename);
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bool Open(FileReader file);
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mpt::PathString GetFileName() const { return m_szFileName; }
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uint32 GetBankType() const { return m_nType; }
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const SOUNDBANKINFO &GetBankInfo() const { return m_BankInfo; }
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public:
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uint32 GetNumInstruments() const { return static_cast<uint32>(m_Instruments.size()); }
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uint32 GetNumSamples() const { return static_cast<uint32>(m_WaveForms.size()); }
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const DLSINSTRUMENT *GetInstrument(uint32 iIns) const { return iIns < m_Instruments.size() ? &m_Instruments[iIns] : nullptr; }
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const DLSINSTRUMENT *FindInstrument(bool isDrum, uint32 bank = 0xFF, uint32 program = 0xFF, uint32 key = 0xFF, uint32 *pInsNo = nullptr) const;
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bool FindAndExtract(CSoundFile &sndFile, const INSTRUMENTINDEX ins, const bool isDrum) const;
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uint32 GetRegionFromKey(uint32 nIns, uint32 nKey) const;
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bool ExtractWaveForm(uint32 nIns, uint32 nRgn, std::vector<uint8> &waveData, uint32 &length) const;
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bool ExtractSample(CSoundFile &sndFile, SAMPLEINDEX nSample, uint32 nIns, uint32 nRgn, int transpose = 0) const;
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bool ExtractInstrument(CSoundFile &sndFile, INSTRUMENTINDEX nInstr, uint32 nIns, uint32 nDrumRgn) const;
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const char *GetRegionName(uint32 nIns, uint32 nRgn) const;
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uint16 GetPanning(uint32 ins, uint32 region) const;
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// Internal Loader Functions
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protected:
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bool UpdateInstrumentDefinition(DLSINSTRUMENT *pDlsIns, FileReader chunk);
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bool UpdateSF2PresetData(SF2LoaderInfo &sf2info, const IFFCHUNK &header, FileReader &chunk);
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bool ConvertSF2ToDLS(SF2LoaderInfo &sf2info);
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public:
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// DLS Unit conversion
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static int32 DLS32BitTimeCentsToMilliseconds(int32 lTimeCents);
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static int32 DLS32BitRelativeGainToLinear(int32 lCentibels); // 0dB = 0x10000
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static int32 DLS32BitRelativeLinearToGain(int32 lGain); // 0dB = 0x10000
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static int32 DLSMidiVolumeToLinear(uint32 nMidiVolume); // [0-127] -> [0-0x10000]
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};
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#endif // MODPLUG_TRACKER
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OPENMPT_NAMESPACE_END
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