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winamp/Src/external_dependencies/openmpt-trunk/soundlib/Snd_defs.h

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Initial community commit
2024-09-24 12:54:57 +00:00
/*
* Snd_Defs.h
* ----------
* Purpose: Basic definitions of data types, enums, etc. for the playback engine core.
* Notes : (currently none)
* Authors: Olivier Lapicque
* OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#pragma once
#include "openmpt/all/BuildSettings.hpp"
#include "openmpt/base/FlagSet.hpp"
OPENMPT_NAMESPACE_BEGIN
using ROWINDEX = uint32;
inline constexpr ROWINDEX ROWINDEX_INVALID = uint32_max;
using CHANNELINDEX = uint16;
inline constexpr CHANNELINDEX CHANNELINDEX_INVALID = uint16_max;
using ORDERINDEX = uint16;
inline constexpr ORDERINDEX ORDERINDEX_INVALID = uint16_max;
inline constexpr ORDERINDEX ORDERINDEX_MAX = uint16_max - 1;
using PATTERNINDEX = uint16;
inline constexpr PATTERNINDEX PATTERNINDEX_INVALID = uint16_max;
using PLUGINDEX = uint8;
inline constexpr PLUGINDEX PLUGINDEX_INVALID = uint8_max;
using SAMPLEINDEX = uint16;
inline constexpr SAMPLEINDEX SAMPLEINDEX_INVALID = uint16_max;
using INSTRUMENTINDEX = uint16;
inline constexpr INSTRUMENTINDEX INSTRUMENTINDEX_INVALID = uint16_max;
using SEQUENCEINDEX = uint8;
inline constexpr SEQUENCEINDEX SEQUENCEINDEX_INVALID = uint8_max;
using SmpLength = uint32;
inline constexpr SmpLength MAX_SAMPLE_LENGTH = 0x10000000; // Sample length in frames. Sample size in bytes can be more than this (= 256 MB).
inline constexpr ROWINDEX MAX_PATTERN_ROWS = 1024;
inline constexpr ROWINDEX MAX_ROWS_PER_BEAT = 65536;
inline constexpr ORDERINDEX MAX_ORDERS = ORDERINDEX_MAX + 1;
inline constexpr PATTERNINDEX MAX_PATTERNS = 4000;
inline constexpr SAMPLEINDEX MAX_SAMPLES = 4000;
inline constexpr INSTRUMENTINDEX MAX_INSTRUMENTS = 256;
inline constexpr PLUGINDEX MAX_MIXPLUGINS = 250;
inline constexpr SEQUENCEINDEX MAX_SEQUENCES = 50;
inline constexpr CHANNELINDEX MAX_BASECHANNELS = 127; // Maximum pattern channels.
inline constexpr CHANNELINDEX MAX_CHANNELS = 256; // Maximum number of mixing channels.
enum { FREQ_FRACBITS = 4 }; // Number of fractional bits in return value of CSoundFile::GetFreqFromPeriod()
// String lengths (including trailing null char)
enum
{
MAX_SAMPLENAME = 32,
MAX_SAMPLEFILENAME = 22,
MAX_INSTRUMENTNAME = 32,
MAX_INSTRUMENTFILENAME = 32,
MAX_PATTERNNAME = 32,
MAX_CHANNELNAME = 20,
};
enum MODTYPE
{
MOD_TYPE_NONE = 0x00,
MOD_TYPE_MOD = 0x01,
MOD_TYPE_S3M = 0x02,
MOD_TYPE_XM = 0x04,
MOD_TYPE_MED = 0x08,
MOD_TYPE_MTM = 0x10,
MOD_TYPE_IT = 0x20,
MOD_TYPE_669 = 0x40,
MOD_TYPE_ULT = 0x80,
MOD_TYPE_STM = 0x100,
MOD_TYPE_FAR = 0x200,
MOD_TYPE_DTM = 0x400,
MOD_TYPE_AMF = 0x800,
MOD_TYPE_AMS = 0x1000,
MOD_TYPE_DSM = 0x2000,
MOD_TYPE_MDL = 0x4000,
MOD_TYPE_OKT = 0x8000,
MOD_TYPE_MID = 0x10000,
MOD_TYPE_DMF = 0x20000,
MOD_TYPE_PTM = 0x40000,
MOD_TYPE_DBM = 0x80000,
MOD_TYPE_MT2 = 0x100000,
MOD_TYPE_AMF0 = 0x200000,
MOD_TYPE_PSM = 0x400000,
MOD_TYPE_J2B = 0x800000,
MOD_TYPE_MPT = 0x1000000,
MOD_TYPE_IMF = 0x2000000,
MOD_TYPE_DIGI = 0x4000000,
MOD_TYPE_STP = 0x8000000,
MOD_TYPE_PLM = 0x10000000,
MOD_TYPE_SFX = 0x20000000,
};
DECLARE_FLAGSET(MODTYPE)
enum MODCONTAINERTYPE
{
MOD_CONTAINERTYPE_NONE = 0x0,
MOD_CONTAINERTYPE_UMX = 0x3,
MOD_CONTAINERTYPE_XPK = 0x4,
MOD_CONTAINERTYPE_PP20 = 0x5,
MOD_CONTAINERTYPE_MMCMP= 0x6,
MOD_CONTAINERTYPE_WAV = 0x7, // WAV as module
MOD_CONTAINERTYPE_UAX = 0x8, // Unreal sample set as module
};
// Module channel / sample flags
enum ChannelFlags
{
// Sample Flags
CHN_16BIT = 0x01, // 16-bit sample
CHN_LOOP = 0x02, // Looped sample
CHN_PINGPONGLOOP = 0x04, // Bidi-looped sample
CHN_SUSTAINLOOP = 0x08, // Sample with sustain loop
CHN_PINGPONGSUSTAIN = 0x10, // Sample with bidi sustain loop
CHN_PANNING = 0x20, // Sample with forced panning
CHN_STEREO = 0x40, // Stereo sample
CHN_REVERSE = 0x80, // Start sample playback from sample / loop end (Velvet Studio feature)
CHN_SURROUND = 0x100, // Use surround channel
CHN_ADLIB = 0x200, // Adlib / OPL instrument is active on this channel
// Channel Flags
CHN_PINGPONGFLAG = 0x80, // When flag is on, sample is processed backwards - this is intentionally the same flag as CHN_REVERSE.
CHN_MUTE = 0x400, // Muted channel
CHN_KEYOFF = 0x800, // Exit sustain
CHN_NOTEFADE = 0x1000, // Fade note (instrument mode)
CHN_WRAPPED_LOOP = 0x2000, // Loop just wrapped around to loop start (required for correct interpolation around loop points)
CHN_AMIGAFILTER = 0x4000, // Apply Amiga low-pass filter
CHN_FILTER = 0x8000, // Apply resonant filter on sample
CHN_VOLUMERAMP = 0x10000, // Apply volume ramping
CHN_VIBRATO = 0x20000, // Apply vibrato
CHN_TREMOLO = 0x40000, // Apply tremolo
CHN_PORTAMENTO = 0x80000, // Apply portamento
CHN_GLISSANDO = 0x100000, // Glissando (force portamento to semitones) mode
CHN_FASTVOLRAMP = 0x200000, // Force usage of global ramping settings instead of ramping over the complete render buffer length
CHN_EXTRALOUD = 0x400000, // Force sample to play at 0dB
CHN_REVERB = 0x800000, // Apply reverb on this channel
CHN_NOREVERB = 0x1000000, // Disable reverb on this channel
CHN_SOLO = 0x2000000, // Solo channel
CHN_NOFX = 0x4000000, // Dry channel (no plugins)
CHN_SYNCMUTE = 0x8000000, // Keep sample sync on mute
// Sample flags (only present in ModSample::uFlags, may overlap with CHN_CHANNELFLAGS)
SMP_MODIFIED = 0x2000, // Sample data has been edited in the tracker
SMP_KEEPONDISK = 0x4000, // Sample is not saved to file, data is restored from original sample file
SMP_NODEFAULTVOLUME = 0x8000, // Ignore default volume setting
};
DECLARE_FLAGSET(ChannelFlags)
#define CHN_SAMPLEFLAGS (CHN_16BIT | CHN_LOOP | CHN_PINGPONGLOOP | CHN_SUSTAINLOOP | CHN_PINGPONGSUSTAIN | CHN_PANNING | CHN_STEREO | CHN_PINGPONGFLAG | CHN_REVERSE | CHN_SURROUND | CHN_ADLIB)
#define CHN_CHANNELFLAGS (~CHN_SAMPLEFLAGS | CHN_SURROUND)
// Sample flags fit into the first 16 bits, and with the current memory layout, storing them as a 16-bit integer packs struct ModSample nicely.
using SampleFlags = FlagSet<ChannelFlags, uint16>;
// Instrument envelope-specific flags
enum EnvelopeFlags : uint8
{
ENV_ENABLED = 0x01, // env is enabled
ENV_LOOP = 0x02, // env loop
ENV_SUSTAIN = 0x04, // env sustain
ENV_CARRY = 0x08, // env carry
ENV_FILTER = 0x10, // filter env enabled (this has to be combined with ENV_ENABLED in the pitch envelope's flags)
};
DECLARE_FLAGSET(EnvelopeFlags)
// Envelope value boundaries
#define ENVELOPE_MIN 0 // Vertical min value of a point
#define ENVELOPE_MID 32 // Vertical middle line
#define ENVELOPE_MAX 64 // Vertical max value of a point
#define MAX_ENVPOINTS 240 // Maximum length of each instrument envelope
// Instrument-specific flags
enum InstrumentFlags : uint8
{
INS_SETPANNING = 0x01, // Panning enabled
INS_MUTE = 0x02, // Instrument is muted
};
DECLARE_FLAGSET(InstrumentFlags)
// envelope types in instrument editor
enum EnvelopeType : uint8
{
ENV_VOLUME = 0,
ENV_PANNING,
ENV_PITCH,
ENV_MAXTYPES
};
// Filter Modes
enum class FilterMode : uint8
{
Unchanged = 0xFF,
LowPass = 0,
HighPass = 1,
};
// NNA types (New Note Action)
enum class NewNoteAction : uint8
{
NoteCut = 0,
Continue = 1,
NoteOff = 2,
NoteFade = 3,
};
// DCT types (Duplicate Check Types)
enum class DuplicateCheckType : uint8
{
None = 0,
Note = 1,
Sample = 2,
Instrument = 3,
Plugin = 4,
};
// DNA types (Duplicate Note Action)
enum class DuplicateNoteAction : uint8
{
NoteCut = 0,
NoteOff = 1,
NoteFade = 2,
};
// Module flags - contains both song configuration and playback state... Use SONG_FILE_FLAGS and SONG_PLAY_FLAGS distinguish between the two.
enum SongFlags
{
SONG_FASTVOLSLIDES = 0x02, // Old Scream Tracker 3.0 volume slides
SONG_ITOLDEFFECTS = 0x04, // Old Impulse Tracker effect implementations
SONG_ITCOMPATGXX = 0x08, // IT "Compatible Gxx" (IT's flag to behave more like other trackers w/r/t portamento effects)
SONG_LINEARSLIDES = 0x10, // Linear slides vs. Amiga slides
SONG_PATTERNLOOP = 0x20, // Loop current pattern (pattern editor)
SONG_STEP = 0x40, // Song is in "step" mode (pattern editor)
SONG_PAUSED = 0x80, // Song is paused (no tick processing, just rendering audio)
SONG_FADINGSONG = 0x0100, // Song is fading out
SONG_ENDREACHED = 0x0200, // Song is finished
SONG_FIRSTTICK = 0x1000, // Is set when the current tick is the first tick of the row
SONG_MPTFILTERMODE = 0x2000, // Local filter mode (reset filter on each note)
SONG_SURROUNDPAN = 0x4000, // Pan in the rear channels
SONG_EXFILTERRANGE = 0x8000, // Cutoff Filter has double frequency range (up to ~10Khz)
SONG_AMIGALIMITS = 0x1'0000, // Enforce amiga frequency limits
SONG_S3MOLDVIBRATO = 0x2'0000, // ScreamTracker 2 vibrato in S3M files
SONG_BREAKTOROW = 0x8'0000, // Break to row command encountered (internal flag, do not touch)
SONG_POSJUMP = 0x10'0000, // Position jump encountered (internal flag, do not touch)
SONG_PT_MODE = 0x20'0000, // ProTracker 1/2 playback mode
SONG_PLAYALLSONGS = 0x40'0000, // Play all subsongs consecutively (libopenmpt)
SONG_ISAMIGA = 0x80'0000, // Is an Amiga module and thus qualifies to be played using the Paula BLEP resampler
SONG_IMPORTED = 0x100'0000, // Song type does not represent actual module format / was imported from a different format (OpenMPT)
};
DECLARE_FLAGSET(SongFlags)
#define SONG_FILE_FLAGS (SONG_FASTVOLSLIDES|SONG_ITOLDEFFECTS|SONG_ITCOMPATGXX|SONG_LINEARSLIDES|SONG_EXFILTERRANGE|SONG_AMIGALIMITS|SONG_S3MOLDVIBRATO|SONG_PT_MODE|SONG_ISAMIGA|SONG_IMPORTED)
#define SONG_PLAY_FLAGS (~SONG_FILE_FLAGS)
// Global Options (Renderer)
#ifndef NO_AGC
#define SNDDSP_AGC 0x40 // Automatic gain control
#endif // ~NO_AGC
#ifndef NO_DSP
#define SNDDSP_MEGABASS 0x02 // Bass expansion
#define SNDDSP_SURROUND 0x08 // Surround mix
#define SNDDSP_BITCRUSH 0x01
#endif // NO_DSP
#ifndef NO_REVERB
#define SNDDSP_REVERB 0x20 // Apply reverb
#endif // NO_REVERB
#ifndef NO_EQ
#define SNDDSP_EQ 0x80 // Apply EQ
#endif // NO_EQ
#define SNDMIX_SOFTPANNING 0x10 // Soft panning mode (this is forced with mixmode RC3 and later)
// Misc Flags (can safely be turned on or off)
#define SNDMIX_MAXDEFAULTPAN 0x80000 // Currently unused (should be used by Amiga MOD loaders)
#define SNDMIX_MUTECHNMODE 0x100000 // Notes are not played on muted channels
#define MAX_GLOBAL_VOLUME 256u
// Resampling modes
enum ResamplingMode : uint8
{
// ATTENTION: Do not change ANY of these values, as they get written out to files in per instrument interpolation settings
// and old files have these exact values in them which should not change meaning.
SRCMODE_NEAREST = 0, // 1 tap, no AA
SRCMODE_LINEAR = 1, // 2 tap, no AA
SRCMODE_CUBIC = 2, // 4 tap, no AA
SRCMODE_SINC8 = 4, // 8 tap, no AA (yes, index 4) (XMMS-ModPlug)
SRCMODE_SINC8LP = 3, // 8 tap, with AA (yes, index 3) (Polyphase)
SRCMODE_DEFAULT = 5, // Only used for instrument settings, not used inside the mixer
SRCMODE_AMIGA = 0xFF, // Not explicitely user-selectable
};
namespace Resampling
{
enum class AmigaFilter
{
Off = 0,
A500 = 1,
A1200 = 2,
Unfiltered = 3,
};
inline std::array<ResamplingMode, 5> AllModes() noexcept { return { { SRCMODE_NEAREST, SRCMODE_LINEAR, SRCMODE_CUBIC, SRCMODE_SINC8, SRCMODE_SINC8LP } }; }
inline std::array<ResamplingMode, 6> AllModesWithDefault() noexcept { return { { SRCMODE_NEAREST, SRCMODE_LINEAR, SRCMODE_CUBIC, SRCMODE_SINC8, SRCMODE_SINC8LP, SRCMODE_DEFAULT } }; }
constexpr ResamplingMode Default() noexcept { return SRCMODE_SINC8LP; }
constexpr bool IsKnownMode(int mode) noexcept { return (mode >= 0) && (mode < SRCMODE_DEFAULT); }
constexpr ResamplingMode ToKnownMode(int mode) noexcept
{
return Resampling::IsKnownMode(mode) ? static_cast<ResamplingMode>(mode)
: (mode == SRCMODE_AMIGA) ? SRCMODE_LINEAR
: Resampling::Default();
}
constexpr int Length(ResamplingMode mode) noexcept
{
return mode == SRCMODE_NEAREST ? 1
: mode == SRCMODE_LINEAR ? 2
: mode == SRCMODE_CUBIC ? 4
: mode == SRCMODE_SINC8 ? 8
: mode == SRCMODE_SINC8LP ? 8
: 0;
}
constexpr bool HasAA(ResamplingMode mode) noexcept { return (mode == SRCMODE_SINC8LP); }
constexpr ResamplingMode AddAA(ResamplingMode mode) noexcept { return (mode == SRCMODE_SINC8) ? SRCMODE_SINC8LP : mode; }
constexpr ResamplingMode RemoveAA(ResamplingMode mode) noexcept { return (mode == SRCMODE_SINC8LP) ? SRCMODE_SINC8 : mode; }
}
// Release node defines
#define ENV_RELEASE_NODE_UNSET 0xFF
#define NOT_YET_RELEASED (-1)
static_assert(ENV_RELEASE_NODE_UNSET > MAX_ENVPOINTS);
enum PluginPriority
{
ChannelOnly,
InstrumentOnly,
PrioritiseInstrument,
PrioritiseChannel,
};
enum PluginMutePriority
{
EvenIfMuted,
RespectMutes,
};
// Plugin velocity handling options
enum PlugVelocityHandling : uint8
{
PLUGIN_VELOCITYHANDLING_CHANNEL = 0,
PLUGIN_VELOCITYHANDLING_VOLUME
};
// Plugin volumecommand handling options
enum PlugVolumeHandling : uint8
{
PLUGIN_VOLUMEHANDLING_MIDI = 0,
PLUGIN_VOLUMEHANDLING_DRYWET,
PLUGIN_VOLUMEHANDLING_IGNORE,
PLUGIN_VOLUMEHANDLING_CUSTOM,
PLUGIN_VOLUMEHANDLING_MAX,
};
enum MidiChannel : uint8
{
MidiNoChannel = 0,
MidiFirstChannel = 1,
MidiLastChannel = 16,
MidiMappedChannel = 17,
};
// Vibrato Types
enum VibratoType : uint8
{
VIB_SINE = 0,
VIB_SQUARE,
VIB_RAMP_UP,
VIB_RAMP_DOWN,
VIB_RANDOM
};
// Tracker-specific playback behaviour
// Note: The index of every flag has to be fixed, so do not remove flags. Always add new flags at the end!
enum PlayBehaviour
{
MSF_COMPATIBLE_PLAY, // No-op - only used during loading (Old general compatibility flag for IT/MPT/XM)
kMPTOldSwingBehaviour, // MPT 1.16 swing behaviour (IT/MPT, deprecated)
kMIDICCBugEmulation, // Emulate broken volume MIDI CC behaviour (IT/MPT/XM, deprecated)
kOldMIDIPitchBends, // Old VST MIDI pitch bend behaviour (IT/MPT/XM, deprecated)
kFT2VolumeRamping, // Smooth volume ramping like in FT2 (XM)
kMODVBlankTiming, // F21 and above set speed instead of tempo
kSlidesAtSpeed1, // Execute normal slides at speed 1 as if they were fine slides
kPeriodsAreHertz, // Compute note frequency in Hertz rather than periods
kTempoClamp, // Clamp tempo to 32-255 range.
kPerChannelGlobalVolSlide, // Global volume slide memory is per-channel
kPanOverride, // Panning commands override surround and random pan variation
kITInstrWithoutNote, // Avoid instrument handling if there is no note
kITVolColFinePortamento, // Volume column portamento never does fine portamento
kITArpeggio, // IT arpeggio algorithm
kITOutOfRangeDelay, // Out-of-range delay command behaviour in IT
kITPortaMemoryShare, // Gxx shares memory with Exx and Fxx
kITPatternLoopTargetReset, // After finishing a pattern loop, set the pattern loop target to the next row
kITFT2PatternLoop, // Nested pattern loop behaviour
kITPingPongNoReset, // Don't reset ping pong direction with instrument numbers
kITEnvelopeReset, // IT envelope reset behaviour
kITClearOldNoteAfterCut, // Forget the previous note after cutting it
kITVibratoTremoloPanbrello, // More IT-like Hxx / hx, Rxx, Yxx and autovibrato handling, including more precise LUTs
kITTremor, // Ixx behaves like in IT
kITRetrigger, // Qxx behaves like in IT
kITMultiSampleBehaviour, // Properly update C-5 frequency when changing in multisampled instrument
kITPortaTargetReached, // Clear portamento target after it has been reached
kITPatternLoopBreak, // Don't reset loop count on pattern break.
kITOffset, // IT-style Oxx edge case handling
kITSwingBehaviour, // IT's swing behaviour
kITNNAReset, // NNA is reset on every note change, not every instrument change
kITSCxStopsSample, // SCx really stops the sample and does not just mute it
kITEnvelopePositionHandling, // IT-style envelope position advance + enable/disable behaviour
kITPortamentoInstrument, // No sample changes during portamento with Compatible Gxx enabled, instrument envelope reset with portamento
kITPingPongMode, // Don't repeat last sample point in ping pong loop, like IT's software mixer
kITRealNoteMapping, // Use triggered note rather than translated note for PPS and other effects
kITHighOffsetNoRetrig, // SAx should not apply an offset effect to a note next to it
kITFilterBehaviour, // User IT's filter coefficients (unless extended filter range is used)
kITNoSurroundPan, // Panning and surround are mutually exclusive
kITShortSampleRetrig, // Don't retrigger already stopped channels
kITPortaNoNote, // Don't apply any portamento if no previous note is playing
kITFT2DontResetNoteOffOnPorta, // Only reset note-off status on portamento in IT Compatible Gxx mode
kITVolColMemory, // IT volume column effects share their memory with the effect column
kITPortamentoSwapResetsPos, // Portamento with sample swap plays the new sample from the beginning
kITEmptyNoteMapSlot, // IT ignores instrument note map entries with no note completely
kITFirstTickHandling, // IT-style first tick handling
kITSampleAndHoldPanbrello, // IT-style sample&hold panbrello waveform
kITClearPortaTarget, // New notes reset portamento target in IT
kITPanbrelloHold, // Don't reset panbrello effect until next note or panning effect
kITPanningReset, // Sample and instrument panning is only applied on note change, not instrument change
kITPatternLoopWithJumpsOld, // Bxx on the same row as SBx terminates the loop in IT (old implementation of kITPatternLoopWithJumps)
kITInstrWithNoteOff, // Instrument number with note-off recalls default volume
kFT2Arpeggio, // FT2 arpeggio algorithm
kFT2Retrigger, // Rxx behaves like in FT2
kFT2VolColVibrato, // Vibrato depth in volume column does not actually execute the vibrato effect
kFT2PortaNoNote, // Don't play portamento-ed note if no previous note is playing
kFT2KeyOff, // FT2-style Kxx handling
kFT2PanSlide, // Volume-column pan slides should be handled like fine slides
kFT2ST3OffsetOutOfRange, // Offset past sample end stops the note
kFT2RestrictXCommand, // Don't allow MPT extensions to Xxx command in XM
kFT2RetrigWithNoteDelay, // Retrigger envelopes if there is a note delay with no note
kFT2SetPanEnvPos, // Lxx only sets the pan env position if the volume envelope's sustain flag is set
kFT2PortaIgnoreInstr, // Portamento plus instrument number applies the volume settings of the new sample, but not the new sample itself.
kFT2VolColMemory, // No volume column memory in FT2
kFT2LoopE60Restart, // Next pattern starts on the same row as the last E60 command
kFT2ProcessSilentChannels, // Keep processing silent channels for later 3xx pickup
kFT2ReloadSampleSettings, // Reload sample settings even if a note-off is placed next to an instrument number
kFT2PortaDelay, // Portamento with note delay next to it is ignored in FT2
kFT2Transpose, // Out-of-range transposed notes in FT2
kFT2PatternLoopWithJumps, // Bxx or Dxx on the same row as E6x terminates the loop in FT2
kFT2PortaTargetNoReset, // Portamento target is not reset with new notes in FT2
kFT2EnvelopeEscape, // FT2 sustain point at end of envelope
kFT2Tremor, // Txx behaves like in FT2
kFT2OutOfRangeDelay, // Out-of-range delay command behaviour in FT2
kFT2Periods, // Use FT2's broken period handling
kFT2PanWithDelayedNoteOff, // Pan command with delayed note-off
kFT2VolColDelay, // FT2-style volume column handling if there is a note delay
kFT2FinetunePrecision, // Only take the upper 4 bits of sample finetune.
kST3NoMutedChannels, // Don't process any effects on muted S3M channels
kST3EffectMemory, // Most effects share the same memory in ST3
kST3PortaSampleChange, // Portamento plus instrument number applies the volume settings of the new sample, but not the new sample itself (GUS behaviour).
kST3VibratoMemory, // Do not remember vibrato type in effect memory
kST3LimitPeriod, // Cut note instead of limiting final period (ModPlug Tracker style)
KST3PortaAfterArpeggio, // Portamento after arpeggio continues at the note where the arpeggio left off
kMODOneShotLoops, // Allow ProTracker-like oneshot loops
kMODIgnorePanning, // Do not process any panning commands
kMODSampleSwap, // On-the-fly sample swapping
kFT2NoteOffFlags, // Set and reset the correct fade/key-off flags with note-off and instrument number after note-off
kITMultiSampleInstrumentNumber, // After portamento to different sample within multi-sampled instrument, lone instrument numbers in patterns always recall the new sample's default settings
kRowDelayWithNoteDelay, // Retrigger note delays on every reptition of a row
kFT2MODTremoloRampWaveform, // FT2-/ProTracker-compatible tremolo ramp down / triangle waveform
kFT2PortaUpDownMemory, // Portamento up and down have separate memory
kMODOutOfRangeNoteDelay, // ProTracker behaviour for out-of-range note delays
kMODTempoOnSecondTick, // ProTracker sets tempo after the first tick
kFT2PanSustainRelease, // If the sustain point of a panning envelope is reached before key-off, FT2 does not escape it anymore
kLegacyReleaseNode, // Legacy release node volume processing
kOPLBeatingOscillators, // Emulate beating FM oscillators from CDFM / Composer 670
kST3OffsetWithoutInstrument, // Note without instrument uses same offset as previous note
kReleaseNodePastSustainBug, // OpenMPT 1.23.01.02 / r4009 broke release nodes past the sustain point, fixed in OpenMPT 1.28
kFT2NoteDelayWithoutInstr, // Sometime between OpenMPT 1.18.03.00 and 1.19.01.00, delayed instrument-less notes in XM started recalling the default sample volume and panning
kOPLFlexibleNoteOff, // Full control after note-off over OPL voices, ^^^ sends note cut instead of just note-off
kITInstrWithNoteOffOldEffects, // Instrument number with note-off recalls default volume - special cases with Old Effects enabled
kMIDIVolumeOnNoteOffBug, // Update MIDI channel volume on note-off (legacy bug emulation)
kITDoNotOverrideChannelPan, // Sample / instrument pan does not override channel pan for following samples / instruments that are not panned
kITPatternLoopWithJumps, // Bxx right of SBx terminates the loop in IT
kITDCTBehaviour, // DCT="Sample" requires sample instrument, DCT="Note" checks old pattern note against new pattern note (previously was checking old pattern note against new translated note)
kOPLwithNNA, // NNA note-off / fade are applied to OPL channels
kST3RetrigAfterNoteCut, // Qxy does not retrigger note after it has been cut with ^^^ or SCx
kST3SampleSwap, // On-the-fly sample swapping (SoundBlaster behaviour)
kOPLRealRetrig, // Retrigger effect (Qxy) restarts OPL notes
kOPLNoResetAtEnvelopeEnd, // Do not reset OPL channel status at end of envelope (OpenMPT 1.28 inconsistency with samples)
kOPLNoteStopWith0Hz, // Set note frequency to 0 Hz to "stop" OPL notes
kOPLNoteOffOnNoteChange, // Send note-off events for old note on every note change
kFT2PortaResetDirection, // Reset portamento direction when reaching portamento target from below
kApplyUpperPeriodLimit, // Enforce m_nMaxPeriod
kApplyOffsetWithoutNote, // Offset commands even work when there's no note next to them (e.g. DMF, MDL, PLM formats)
kITPitchPanSeparation, // Pitch/Pan Separation can be overridden by panning commands (this also fixes a bug where any "special" notes affect PPS)
kImprecisePingPongLoops, // Use old (less precise) ping-pong overshoot calculation
// Add new play behaviours here.
kMaxPlayBehaviours,
};
// Tempo swing determines how much every row in modern tempo mode contributes to a beat.
class TempoSwing : public std::vector<uint32>
{
public:
static constexpr uint32 Unity = 1u << 24;
// Normalize the tempo swing coefficients so that they add up to exactly the specified tempo again
void Normalize();
void resize(size_type newSize, value_type val = Unity) { std::vector<uint32>::resize(newSize, val); Normalize(); }
static void Serialize(std::ostream &oStrm, const TempoSwing &swing);
static void Deserialize(std::istream &iStrm, TempoSwing &swing, const size_t);
};
// Sample position and sample position increment value
struct SamplePosition
{
using value_t = int64;
using unsigned_value_t = uint64;
protected:
value_t v = 0;
public:
static constexpr uint32 fractMax = 0xFFFFFFFFu;
MPT_CONSTEXPRINLINE SamplePosition() { }
MPT_CONSTEXPRINLINE explicit SamplePosition(value_t pos) : v(pos) { }
MPT_CONSTEXPRINLINE SamplePosition(int32 intPart, uint32 fractPart) : v((static_cast<value_t>(intPart) * (1ll << 32)) | fractPart) { }
static SamplePosition Ratio(uint32 dividend, uint32 divisor) { return SamplePosition((static_cast<int64>(dividend) << 32) / divisor); }
static SamplePosition FromDouble(double pos) { return SamplePosition(static_cast<value_t>(pos * 4294967296.0)); }
double ToDouble() const { return v / 4294967296.0; }
// Set integer and fractional part
MPT_CONSTEXPRINLINE SamplePosition &Set(int32 intPart, uint32 fractPart = 0) { v = (static_cast<int64>(intPart) << 32) | fractPart; return *this; }
// Set integer part, keep fractional part
MPT_CONSTEXPRINLINE SamplePosition &SetInt(int32 intPart) { v = (static_cast<value_t>(intPart) << 32) | GetFract(); return *this; }
// Get integer part (as sample length / position)
MPT_CONSTEXPRINLINE SmpLength GetUInt() const { return static_cast<SmpLength>(static_cast<unsigned_value_t>(v) >> 32); }
// Get integer part
MPT_CONSTEXPRINLINE int32 GetInt() const { return static_cast<int32>(static_cast<unsigned_value_t>(v) >> 32); }
// Get fractional part
MPT_CONSTEXPRINLINE uint32 GetFract() const { return static_cast<uint32>(v); }
// Get the inverted fractional part
MPT_CONSTEXPRINLINE SamplePosition GetInvertedFract() const { return SamplePosition(0x100000000ll - GetFract()); }
// Get the raw fixed-point value
MPT_CONSTEXPRINLINE int64 GetRaw() const { return v; }
// Negate the current value
MPT_CONSTEXPRINLINE SamplePosition &Negate() { v = -v; return *this; }
// Multiply and divide by given integer scalars
MPT_CONSTEXPRINLINE SamplePosition &MulDiv(uint32 mul, uint32 div) { v = (v * mul) / div; return *this; }
// Removes the integer part, only keeping fractions
MPT_CONSTEXPRINLINE SamplePosition &RemoveInt() { v &= fractMax; return *this; }
// Check if value is 1.0
MPT_CONSTEXPRINLINE bool IsUnity() const { return v == 0x100000000ll; }
// Check if value is 0
MPT_CONSTEXPRINLINE bool IsZero() const { return v == 0; }
// Check if value is > 0
MPT_CONSTEXPRINLINE bool IsPositive() const { return v > 0; }
// Check if value is < 0
MPT_CONSTEXPRINLINE bool IsNegative() const { return v < 0; }
// Addition / subtraction of another fixed-point number
SamplePosition operator+ (const SamplePosition &other) const { return SamplePosition(v + other.v); }
SamplePosition operator- (const SamplePosition &other) const { return SamplePosition(v - other.v); }
void operator+= (const SamplePosition &other) { v += other.v; }
void operator-= (const SamplePosition &other) { v -= other.v; }
// Multiplication with integer scalar
template<typename T>
SamplePosition operator* (T other) const { return SamplePosition(static_cast<value_t>(v * other)); }
template<typename T>
void operator*= (T other) { v = static_cast<value_t>(v *other); }
// Division by other fractional point number; returns scalar
value_t operator/ (SamplePosition other) const { return v / other.v; }
// Division by scalar; returns fractional point number
SamplePosition operator/ (int div) const { return SamplePosition(v / div); }
MPT_CONSTEXPRINLINE bool operator==(const SamplePosition &other) const { return v == other.v; }
MPT_CONSTEXPRINLINE bool operator!=(const SamplePosition &other) const { return v != other.v; }
MPT_CONSTEXPRINLINE bool operator<=(const SamplePosition &other) const { return v <= other.v; }
MPT_CONSTEXPRINLINE bool operator>=(const SamplePosition &other) const { return v >= other.v; }
MPT_CONSTEXPRINLINE bool operator<(const SamplePosition &other) const { return v < other.v; }
MPT_CONSTEXPRINLINE bool operator>(const SamplePosition &other) const { return v > other.v; }
};
// Aaaand another fixed-point type, e.g. used for fractional tempos
// Note that this doesn't use classical bit shifting for the fixed point part.
// This is mostly for the clarity of stored values and to be able to represent any value .0000 to .9999 properly.
// For easier debugging, use the Debugger Visualizers available in build/vs/debug/
// to easily display the stored values.
template<size_t FFact, typename T>
struct FPInt
{
protected:
T v;
MPT_CONSTEXPRINLINE FPInt(T rawValue) : v(rawValue) { }
public:
enum : size_t { fractFact = FFact };
using store_t = T;
MPT_CONSTEXPRINLINE FPInt() : v(0) { }
MPT_CONSTEXPRINLINE FPInt(T intPart, T fractPart) : v((intPart * fractFact) + (fractPart % fractFact)) { }
explicit MPT_CONSTEXPRINLINE FPInt(float f) : v(mpt::saturate_round<T>(f * float(fractFact))) { }
explicit MPT_CONSTEXPRINLINE FPInt(double f) : v(mpt::saturate_round<T>(f * double(fractFact))) { }
// Set integer and fractional part
MPT_CONSTEXPRINLINE FPInt<fractFact, T> &Set(T intPart, T fractPart = 0) { v = (intPart * fractFact) + (fractPart % fractFact); return *this; }
// Set raw internal representation directly
MPT_CONSTEXPRINLINE FPInt<fractFact, T> &SetRaw(T value) { v = value; return *this; }
// Retrieve the integer part of the stored value
MPT_CONSTEXPRINLINE T GetInt() const { return v / fractFact; }
// Retrieve the fractional part of the stored value
MPT_CONSTEXPRINLINE T GetFract() const { return v % fractFact; }
// Retrieve the raw internal representation of the stored value
MPT_CONSTEXPRINLINE T GetRaw() const { return v; }
// Formats the stored value as a floating-point value
MPT_CONSTEXPRINLINE double ToDouble() const { return v / double(fractFact); }
MPT_CONSTEXPRINLINE friend FPInt<fractFact, T> operator+ (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return FPInt<fractFact, T>(a.v + b.v); }
MPT_CONSTEXPRINLINE friend FPInt<fractFact, T> operator- (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return FPInt<fractFact, T>(a.v - b.v); }
MPT_CONSTEXPRINLINE FPInt<fractFact, T> operator+= (const FPInt<fractFact, T> &other) noexcept { v += other.v; return *this; }
MPT_CONSTEXPRINLINE FPInt<fractFact, T> operator-= (const FPInt<fractFact, T> &other) noexcept { v -= other.v; return *this; }
MPT_CONSTEXPRINLINE friend bool operator== (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v == b.v; }
MPT_CONSTEXPRINLINE friend bool operator!= (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v != b.v; }
MPT_CONSTEXPRINLINE friend bool operator<= (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v <= b.v; }
MPT_CONSTEXPRINLINE friend bool operator>= (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v >= b.v; }
MPT_CONSTEXPRINLINE friend bool operator< (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v < b.v; }
MPT_CONSTEXPRINLINE friend bool operator> (const FPInt<fractFact, T> &a, const FPInt<fractFact, T> &b) noexcept { return a.v > b.v; }
};
using TEMPO = FPInt<10000, uint32>;
using OPLPatch = std::array<uint8, 12>;
OPENMPT_NAMESPACE_END