516 lines
12 KiB
C++
516 lines
12 KiB
C++
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/*
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* Load_ult.cpp
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* ------------
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* Purpose: ULT (UltraTracker) module loader
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* Notes : (currently none)
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* Authors: Storlek (Original author - http://schismtracker.org/ - code ported with permission)
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* Johannes Schultz (OpenMPT Port, tweaks)
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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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#include "stdafx.h"
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#include "Loaders.h"
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OPENMPT_NAMESPACE_BEGIN
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struct UltFileHeader
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{
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char signature[14]; // "MAS_UTrack_V00"
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uint8 version; // '1'...'4'
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char songName[32]; // Song Name, not guaranteed to be null-terminated
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uint8 messageLength; // Number of Lines
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};
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MPT_BINARY_STRUCT(UltFileHeader, 48)
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struct UltSample
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{
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enum UltSampleFlags
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{
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ULT_16BIT = 4,
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ULT_LOOP = 8,
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ULT_PINGPONGLOOP = 16,
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};
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char name[32];
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char filename[12];
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uint32le loopStart;
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uint32le loopEnd;
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uint32le sizeStart;
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uint32le sizeEnd;
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uint8le volume; // 0-255, apparently prior to 1.4 this was logarithmic?
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uint8le flags; // above
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uint16le speed; // only exists for 1.4+
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int16le finetune;
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// Convert an ULT sample header to OpenMPT's internal sample header.
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void ConvertToMPT(ModSample &mptSmp) const
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{
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mptSmp.Initialize();
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mptSmp.Set16BitCuePoints();
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mptSmp.filename = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, filename);
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if(sizeEnd <= sizeStart)
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{
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return;
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}
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mptSmp.nLength = sizeEnd - sizeStart;
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mptSmp.nSustainStart = loopStart;
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mptSmp.nSustainEnd = std::min(static_cast<SmpLength>(loopEnd), mptSmp.nLength);
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mptSmp.nVolume = volume;
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mptSmp.nC5Speed = speed;
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if(finetune)
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{
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mptSmp.Transpose(finetune / (12.0 * 32768.0));
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}
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if(flags & ULT_LOOP)
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mptSmp.uFlags.set(CHN_SUSTAINLOOP);
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if(flags & ULT_PINGPONGLOOP)
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mptSmp.uFlags.set(CHN_PINGPONGSUSTAIN);
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if(flags & ULT_16BIT)
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{
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mptSmp.uFlags.set(CHN_16BIT);
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mptSmp.nSustainStart /= 2;
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mptSmp.nSustainEnd /= 2;
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}
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}
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};
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MPT_BINARY_STRUCT(UltSample, 66)
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/* Unhandled effects:
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5x1 - do not loop sample (x is unused)
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E0x - set vibrato strength (2 is normal)
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The logarithmic volume scale used in older format versions here, or pretty
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much anywhere for that matter. I don't even think Ultra Tracker tries to
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convert them. */
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static void TranslateULTCommands(uint8 &effect, uint8 ¶m, uint8 version)
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{
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static constexpr uint8 ultEffTrans[] =
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{
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CMD_ARPEGGIO,
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CMD_PORTAMENTOUP,
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CMD_PORTAMENTODOWN,
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CMD_TONEPORTAMENTO,
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CMD_VIBRATO,
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CMD_NONE,
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CMD_NONE,
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CMD_TREMOLO,
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CMD_NONE,
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CMD_OFFSET,
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CMD_VOLUMESLIDE,
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CMD_PANNING8,
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CMD_VOLUME,
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CMD_PATTERNBREAK,
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CMD_NONE, // extended effects, processed separately
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CMD_SPEED,
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};
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uint8 e = effect & 0x0F;
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effect = ultEffTrans[e];
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switch(e)
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{
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case 0x00:
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if(!param || version < '3')
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effect = CMD_NONE;
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break;
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case 0x05:
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// play backwards
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if((param & 0x0F) == 0x02 || (param & 0xF0) == 0x20)
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{
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effect = CMD_S3MCMDEX;
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param = 0x9F;
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}
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if(((param & 0x0F) == 0x0C || (param & 0xF0) == 0xC0) && version >= '3')
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{
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effect = CMD_KEYOFF;
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param = 0;
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}
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break;
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case 0x07:
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if(version < '4')
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effect = CMD_NONE;
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break;
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case 0x0A:
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if(param & 0xF0)
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param &= 0xF0;
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break;
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case 0x0B:
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param = (param & 0x0F) * 0x11;
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break;
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case 0x0C: // volume
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param /= 4u;
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break;
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case 0x0D: // pattern break
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param = 10 * (param >> 4) + (param & 0x0F);
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break;
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case 0x0E: // special
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switch(param >> 4)
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{
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case 0x01:
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effect = CMD_PORTAMENTOUP;
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param = 0xF0 | (param & 0x0F);
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break;
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case 0x02:
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effect = CMD_PORTAMENTODOWN;
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param = 0xF0 | (param & 0x0F);
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break;
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case 0x08:
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if(version >= '4')
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{
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effect = CMD_S3MCMDEX;
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param = 0x60 | (param & 0x0F);
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}
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break;
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case 0x09:
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effect = CMD_RETRIG;
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param &= 0x0F;
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break;
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case 0x0A:
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effect = CMD_VOLUMESLIDE;
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param = ((param & 0x0F) << 4) | 0x0F;
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break;
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case 0x0B:
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effect = CMD_VOLUMESLIDE;
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param = 0xF0 | (param & 0x0F);
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break;
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case 0x0C: case 0x0D:
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effect = CMD_S3MCMDEX;
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break;
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}
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break;
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case 0x0F:
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if(param > 0x2F)
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effect = CMD_TEMPO;
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break;
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}
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}
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static int ReadULTEvent(ModCommand &m, FileReader &file, uint8 version)
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{
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uint8 repeat = 1;
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uint8 b = file.ReadUint8();
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if(b == 0xFC) // repeat event
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{
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repeat = file.ReadUint8();
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b = file.ReadUint8();
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}
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m.note = (b > 0 && b < 61) ? (b + 35 + NOTE_MIN) : NOTE_NONE;
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const auto [instr, cmd, para1, para2] = file.ReadArray<uint8, 4>();
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m.instr = instr;
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uint8 cmd1 = cmd & 0x0F;
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uint8 cmd2 = cmd >> 4;
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uint8 param1 = para1;
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uint8 param2 = para2;
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TranslateULTCommands(cmd1, param1, version);
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TranslateULTCommands(cmd2, param2, version);
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// sample offset -- this is even more special than digitrakker's
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if(cmd1 == CMD_OFFSET && cmd2 == CMD_OFFSET)
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{
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uint32 offset = ((param2 << 8) | param1) >> 6;
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m.command = CMD_OFFSET;
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m.param = static_cast<ModCommand::PARAM>(offset);
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if(offset > 0xFF)
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{
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m.volcmd = VOLCMD_OFFSET;
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m.vol = static_cast<ModCommand::VOL>(offset >> 8);
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}
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return repeat;
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} else if(cmd1 == CMD_OFFSET)
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{
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uint32 offset = param1 * 4;
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param1 = mpt::saturate_cast<uint8>(offset);
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if(offset > 0xFF && ModCommand::GetEffectWeight(cmd2) < ModCommand::GetEffectType(CMD_OFFSET))
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{
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m.command = CMD_OFFSET;
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m.param = static_cast<ModCommand::PARAM>(offset);
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m.volcmd = VOLCMD_OFFSET;
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m.vol = static_cast<ModCommand::VOL>(offset >> 8);
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return repeat;
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}
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} else if(cmd2 == CMD_OFFSET)
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{
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uint32 offset = param2 * 4;
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param2 = mpt::saturate_cast<uint8>(offset);
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if(offset > 0xFF && ModCommand::GetEffectWeight(cmd1) < ModCommand::GetEffectType(CMD_OFFSET))
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{
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m.command = CMD_OFFSET;
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m.param = static_cast<ModCommand::PARAM>(offset);
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m.volcmd = VOLCMD_OFFSET;
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m.vol = static_cast<ModCommand::VOL>(offset >> 8);
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return repeat;
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}
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} else if(cmd1 == cmd2)
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{
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// don't try to figure out how ultratracker does this, it's quite random
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cmd2 = CMD_NONE;
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}
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if(cmd2 == CMD_VOLUME || (cmd2 == CMD_NONE && cmd1 != CMD_VOLUME))
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{
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// swap commands
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std::swap(cmd1, cmd2);
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std::swap(param1, param2);
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}
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// Combine slide commands, if possible
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ModCommand::CombineEffects(cmd2, param2, cmd1, param1);
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ModCommand::TwoRegularCommandsToMPT(cmd1, param1, cmd2, param2);
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m.volcmd = cmd1;
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m.vol = param1;
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m.command = cmd2;
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m.param = param2;
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return repeat;
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}
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// Functor for postfixing ULT patterns (this is easier than just remembering everything WHILE we're reading the pattern events)
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struct PostFixUltCommands
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{
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PostFixUltCommands(CHANNELINDEX numChannels)
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{
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this->numChannels = numChannels;
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curChannel = 0;
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writeT125 = false;
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isPortaActive.resize(numChannels, false);
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}
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void operator()(ModCommand &m)
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{
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// Attempt to fix portamentos.
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// UltraTracker will slide until the destination note is reached or 300 is encountered.
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// Stop porta?
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if(m.command == CMD_TONEPORTAMENTO && m.param == 0)
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{
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isPortaActive[curChannel] = false;
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m.command = CMD_NONE;
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}
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if(m.volcmd == VOLCMD_TONEPORTAMENTO && m.vol == 0)
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{
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isPortaActive[curChannel] = false;
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m.volcmd = VOLCMD_NONE;
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}
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// Apply porta?
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if(m.note == NOTE_NONE && isPortaActive[curChannel])
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{
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if(m.command == CMD_NONE && m.volcmd != VOLCMD_TONEPORTAMENTO)
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{
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m.command = CMD_TONEPORTAMENTO;
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m.param = 0;
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} else if(m.volcmd == VOLCMD_NONE && m.command != CMD_TONEPORTAMENTO)
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{
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m.volcmd = VOLCMD_TONEPORTAMENTO;
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m.vol = 0;
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}
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} else // new note -> stop porta (or initialize again)
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{
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isPortaActive[curChannel] = (m.command == CMD_TONEPORTAMENTO || m.volcmd == VOLCMD_TONEPORTAMENTO);
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}
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// attempt to fix F00 (reset to tempo 125, speed 6)
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if(writeT125 && m.command == CMD_NONE)
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{
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m.command = CMD_TEMPO;
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m.param = 125;
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}
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if(m.command == CMD_SPEED && m.param == 0)
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{
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m.param = 6;
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writeT125 = true;
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}
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if(m.command == CMD_TEMPO) // don't try to fix this anymore if the tempo has already changed.
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{
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writeT125 = false;
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}
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curChannel = (curChannel + 1) % numChannels;
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}
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std::vector<bool> isPortaActive;
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CHANNELINDEX numChannels, curChannel;
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bool writeT125;
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};
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static bool ValidateHeader(const UltFileHeader &fileHeader)
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{
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if(fileHeader.version < '1'
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|| fileHeader.version > '4'
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|| std::memcmp(fileHeader.signature, "MAS_UTrack_V00", sizeof(fileHeader.signature))
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)
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{
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return false;
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}
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return true;
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}
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static uint64 GetHeaderMinimumAdditionalSize(const UltFileHeader &fileHeader)
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{
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return fileHeader.messageLength * 32u + 3u + 256u;
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}
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CSoundFile::ProbeResult CSoundFile::ProbeFileHeaderULT(MemoryFileReader file, const uint64 *pfilesize)
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{
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UltFileHeader fileHeader;
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if(!file.ReadStruct(fileHeader))
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{
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return ProbeWantMoreData;
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}
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if(!ValidateHeader(fileHeader))
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{
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return ProbeFailure;
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}
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return ProbeAdditionalSize(file, pfilesize, GetHeaderMinimumAdditionalSize(fileHeader));
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}
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bool CSoundFile::ReadULT(FileReader &file, ModLoadingFlags loadFlags)
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||
|
|
{
|
||
|
|
file.Rewind();
|
||
|
|
|
||
|
|
UltFileHeader fileHeader;
|
||
|
|
if(!file.ReadStruct(fileHeader))
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if(!ValidateHeader(fileHeader))
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if(loadFlags == onlyVerifyHeader)
|
||
|
|
{
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
if(!file.CanRead(mpt::saturate_cast<FileReader::off_t>(GetHeaderMinimumAdditionalSize(fileHeader))))
|
||
|
|
{
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
InitializeGlobals(MOD_TYPE_ULT);
|
||
|
|
m_songName = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, fileHeader.songName);
|
||
|
|
|
||
|
|
const mpt::uchar *versions[] = {UL_("<1.4"), UL_("1.4"), UL_("1.5"), UL_("1.6")};
|
||
|
|
m_modFormat.formatName = U_("UltraTracker");
|
||
|
|
m_modFormat.type = U_("ult");
|
||
|
|
m_modFormat.madeWithTracker = U_("UltraTracker ") + versions[fileHeader.version - '1'];
|
||
|
|
m_modFormat.charset = mpt::Charset::CP437;
|
||
|
|
|
||
|
|
m_SongFlags = SONG_ITCOMPATGXX | SONG_ITOLDEFFECTS; // this will be converted to IT format by MPT.
|
||
|
|
|
||
|
|
// Read "messageLength" lines, each containing 32 characters.
|
||
|
|
m_songMessage.ReadFixedLineLength(file, fileHeader.messageLength * 32, 32, 0);
|
||
|
|
|
||
|
|
if(SAMPLEINDEX numSamples = file.ReadUint8(); numSamples < MAX_SAMPLES)
|
||
|
|
m_nSamples = numSamples;
|
||
|
|
else
|
||
|
|
return false;
|
||
|
|
|
||
|
|
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
|
||
|
|
{
|
||
|
|
UltSample sampleHeader;
|
||
|
|
|
||
|
|
// Annoying: v4 added a field before the end of the struct
|
||
|
|
if(fileHeader.version >= '4')
|
||
|
|
{
|
||
|
|
file.ReadStruct(sampleHeader);
|
||
|
|
} else
|
||
|
|
{
|
||
|
|
file.ReadStructPartial(sampleHeader, 64);
|
||
|
|
sampleHeader.finetune = sampleHeader.speed;
|
||
|
|
sampleHeader.speed = 8363;
|
||
|
|
}
|
||
|
|
|
||
|
|
sampleHeader.ConvertToMPT(Samples[smp]);
|
||
|
|
m_szNames[smp] = mpt::String::ReadBuf(mpt::String::maybeNullTerminated, sampleHeader.name);
|
||
|
|
}
|
||
|
|
|
||
|
|
ReadOrderFromFile<uint8>(Order(), file, 256, 0xFF, 0xFE);
|
||
|
|
|
||
|
|
if(CHANNELINDEX numChannels = file.ReadUint8() + 1u; numChannels <= MAX_BASECHANNELS)
|
||
|
|
m_nChannels = numChannels;
|
||
|
|
else
|
||
|
|
return false;
|
||
|
|
|
||
|
|
PATTERNINDEX numPats = file.ReadUint8() + 1;
|
||
|
|
|
||
|
|
for(CHANNELINDEX chn = 0; chn < GetNumChannels(); chn++)
|
||
|
|
{
|
||
|
|
ChnSettings[chn].Reset();
|
||
|
|
if(fileHeader.version >= '3')
|
||
|
|
ChnSettings[chn].nPan = ((file.ReadUint8() & 0x0F) << 4) + 8;
|
||
|
|
else
|
||
|
|
ChnSettings[chn].nPan = (chn & 1) ? 192 : 64;
|
||
|
|
}
|
||
|
|
|
||
|
|
Patterns.ResizeArray(numPats);
|
||
|
|
for(PATTERNINDEX pat = 0; pat < numPats; pat++)
|
||
|
|
{
|
||
|
|
if(!Patterns.Insert(pat, 64))
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
for(CHANNELINDEX chn = 0; chn < m_nChannels; chn++)
|
||
|
|
{
|
||
|
|
ModCommand evnote;
|
||
|
|
for(PATTERNINDEX pat = 0; pat < numPats && file.CanRead(5); pat++)
|
||
|
|
{
|
||
|
|
ModCommand *note = Patterns[pat].GetpModCommand(0, chn);
|
||
|
|
ROWINDEX row = 0;
|
||
|
|
while(row < 64)
|
||
|
|
{
|
||
|
|
int repeat = ReadULTEvent(evnote, file, fileHeader.version);
|
||
|
|
if(repeat + row > 64)
|
||
|
|
repeat = 64 - row;
|
||
|
|
if(repeat == 0) break;
|
||
|
|
while(repeat--)
|
||
|
|
{
|
||
|
|
*note = evnote;
|
||
|
|
note += GetNumChannels();
|
||
|
|
row++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// Post-fix some effects.
|
||
|
|
Patterns.ForEachModCommand(PostFixUltCommands(GetNumChannels()));
|
||
|
|
|
||
|
|
if(loadFlags & loadSampleData)
|
||
|
|
{
|
||
|
|
for(SAMPLEINDEX smp = 1; smp <= GetNumSamples(); smp++)
|
||
|
|
{
|
||
|
|
SampleIO(
|
||
|
|
Samples[smp].uFlags[CHN_16BIT] ? SampleIO::_16bit : SampleIO::_8bit,
|
||
|
|
SampleIO::mono,
|
||
|
|
SampleIO::littleEndian,
|
||
|
|
SampleIO::signedPCM)
|
||
|
|
.ReadSample(Samples[smp], file);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
OPENMPT_NAMESPACE_END
|