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644 lines
15 KiB
C++
644 lines
15 KiB
C++
/*
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* Pattern.cpp
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* -----------
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* Purpose: Module Pattern header class
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* Notes : (currently none)
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* Authors: 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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#include "stdafx.h"
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#include "pattern.h"
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#include "patternContainer.h"
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#include "../common/serialization_utils.h"
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#include "../common/version.h"
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#include "ITTools.h"
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#include "Sndfile.h"
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#include "mod_specifications.h"
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#include "mpt/io/io.hpp"
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#include "mpt/io/io_stdstream.hpp"
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OPENMPT_NAMESPACE_BEGIN
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CSoundFile& CPattern::GetSoundFile() { return m_rPatternContainer.GetSoundFile(); }
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const CSoundFile& CPattern::GetSoundFile() const { return m_rPatternContainer.GetSoundFile(); }
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CHANNELINDEX CPattern::GetNumChannels() const
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{
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return GetSoundFile().GetNumChannels();
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}
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// Check if there is any note data on a given row.
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bool CPattern::IsEmptyRow(ROWINDEX row) const
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{
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if(m_ModCommands.empty() || !IsValidRow(row))
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{
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return true;
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}
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PatternRow data = GetRow(row);
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for(CHANNELINDEX chn = 0; chn < GetNumChannels(); chn++, data++)
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{
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if(!data->IsEmpty())
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{
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return false;
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}
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}
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return true;
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}
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bool CPattern::SetSignature(const ROWINDEX rowsPerBeat, const ROWINDEX rowsPerMeasure)
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{
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if(rowsPerBeat < 1
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|| rowsPerBeat > GetSoundFile().GetModSpecifications().patternRowsMax
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|| rowsPerMeasure < rowsPerBeat
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|| rowsPerMeasure > GetSoundFile().GetModSpecifications().patternRowsMax)
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{
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return false;
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}
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m_RowsPerBeat = rowsPerBeat;
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m_RowsPerMeasure = rowsPerMeasure;
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return true;
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}
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// Add or remove rows from the pattern.
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bool CPattern::Resize(const ROWINDEX newRowCount, bool enforceFormatLimits, bool resizeAtEnd)
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{
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CSoundFile &sndFile = GetSoundFile();
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if(newRowCount == m_Rows || newRowCount < 1 || newRowCount > MAX_PATTERN_ROWS)
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{
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return false;
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}
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if(enforceFormatLimits)
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{
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auto &specs = sndFile.GetModSpecifications();
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if(newRowCount > specs.patternRowsMax || newRowCount < specs.patternRowsMin) return false;
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}
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try
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{
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size_t count = ((newRowCount > m_Rows) ? (newRowCount - m_Rows) : (m_Rows - newRowCount)) * GetNumChannels();
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if(newRowCount > m_Rows)
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m_ModCommands.insert(resizeAtEnd ? m_ModCommands.end() : m_ModCommands.begin(), count, ModCommand::Empty());
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else if(resizeAtEnd)
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m_ModCommands.erase(m_ModCommands.end() - count, m_ModCommands.end());
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else
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m_ModCommands.erase(m_ModCommands.begin(), m_ModCommands.begin() + count);
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} catch(mpt::out_of_memory e)
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{
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mpt::delete_out_of_memory(e);
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return false;
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}
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m_Rows = newRowCount;
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return true;
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}
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void CPattern::ClearCommands()
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{
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std::fill(m_ModCommands.begin(), m_ModCommands.end(), ModCommand::Empty());
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}
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bool CPattern::AllocatePattern(ROWINDEX rows)
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{
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size_t newSize = GetNumChannels() * rows;
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if(rows == 0)
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{
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return false;
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} else if(rows == GetNumRows() && m_ModCommands.size() == newSize)
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{
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// Re-use allocated memory
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ClearCommands();
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return true;
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} else
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{
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// Do this in two steps in order to keep the old pattern data in case of OOM
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decltype(m_ModCommands) newPattern(newSize, ModCommand::Empty());
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m_ModCommands = std::move(newPattern);
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}
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m_Rows = rows;
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return true;
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}
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void CPattern::Deallocate()
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{
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m_Rows = m_RowsPerBeat = m_RowsPerMeasure = 0;
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m_ModCommands.clear();
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m_PatternName.clear();
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}
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CPattern& CPattern::operator= (const CPattern &pat)
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{
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m_ModCommands = pat.m_ModCommands;
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m_Rows = pat.m_Rows;
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m_RowsPerBeat = pat.m_RowsPerBeat;
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m_RowsPerMeasure = pat.m_RowsPerMeasure;
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m_tempoSwing = pat.m_tempoSwing;
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m_PatternName = pat.m_PatternName;
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return *this;
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}
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bool CPattern::operator== (const CPattern &other) const
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{
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return GetNumRows() == other.GetNumRows()
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&& GetNumChannels() == other.GetNumChannels()
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&& GetOverrideSignature() == other.GetOverrideSignature()
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&& GetRowsPerBeat() == other.GetRowsPerBeat()
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&& GetRowsPerMeasure() == other.GetRowsPerMeasure()
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&& GetTempoSwing() == other.GetTempoSwing()
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&& m_ModCommands == other.m_ModCommands;
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}
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#ifdef MODPLUG_TRACKER
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bool CPattern::Expand()
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{
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const ROWINDEX newRows = m_Rows * 2;
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const CHANNELINDEX nChns = GetNumChannels();
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if(m_ModCommands.empty()
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|| newRows > GetSoundFile().GetModSpecifications().patternRowsMax)
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{
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return false;
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}
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decltype(m_ModCommands) newPattern;
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try
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{
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newPattern.assign(m_ModCommands.size() * 2, ModCommand::Empty());
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} catch(mpt::out_of_memory e)
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{
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mpt::delete_out_of_memory(e);
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return false;
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}
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for(auto mSrc = m_ModCommands.begin(), mDst = newPattern.begin(); mSrc != m_ModCommands.end(); mSrc += nChns, mDst += 2 * nChns)
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{
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std::copy(mSrc, mSrc + nChns, mDst);
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}
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m_ModCommands = std::move(newPattern);
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m_Rows = newRows;
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return true;
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}
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bool CPattern::Shrink()
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{
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if (m_ModCommands.empty()
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|| m_Rows < GetSoundFile().GetModSpecifications().patternRowsMin * 2)
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{
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return false;
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}
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m_Rows /= 2;
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const CHANNELINDEX nChns = GetNumChannels();
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for(ROWINDEX y = 0; y < m_Rows; y++)
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{
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const PatternRow srcRow = GetRow(y * 2);
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const PatternRow nextSrcRow = GetRow(y * 2 + 1);
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PatternRow destRow = GetRow(y);
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for(CHANNELINDEX x = 0; x < nChns; x++)
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{
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const ModCommand &src = srcRow[x];
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const ModCommand &srcNext = nextSrcRow[x];
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ModCommand &dest = destRow[x];
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dest = src;
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if(dest.note == NOTE_NONE && !dest.instr)
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{
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// Fill in data from next row if field is empty
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dest.note = srcNext.note;
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dest.instr = srcNext.instr;
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if(srcNext.volcmd != VOLCMD_NONE)
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{
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dest.volcmd = srcNext.volcmd;
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dest.vol = srcNext.vol;
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}
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if(dest.command == CMD_NONE)
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{
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dest.command = srcNext.command;
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dest.param = srcNext.param;
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}
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}
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}
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}
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m_ModCommands.resize(m_Rows * nChns);
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return true;
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}
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#endif // MODPLUG_TRACKER
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bool CPattern::SetName(const std::string &newName)
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{
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m_PatternName = newName;
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return true;
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}
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bool CPattern::SetName(const char *newName, size_t maxChars)
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{
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if(newName == nullptr || maxChars == 0)
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{
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return false;
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}
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const auto nameEnd = std::find(newName, newName + maxChars, '\0');
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m_PatternName.assign(newName, nameEnd);
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return true;
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}
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// Write some kind of effect data to the pattern. Exact data to be written and write behaviour can be found in the EffectWriter object.
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bool CPattern::WriteEffect(EffectWriter &settings)
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{
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// First, reject invalid parameters.
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if(m_ModCommands.empty()
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|| settings.m_row >= GetNumRows()
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|| (settings.m_channel >= GetNumChannels() && settings.m_channel != CHANNELINDEX_INVALID))
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{
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return false;
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}
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CHANNELINDEX scanChnMin = settings.m_channel, scanChnMax = settings.m_channel;
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// Scan all channels
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if(settings.m_channel == CHANNELINDEX_INVALID)
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{
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scanChnMin = 0;
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scanChnMax = GetNumChannels() - 1;
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}
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ModCommand * const baseCommand = GetpModCommand(settings.m_row, scanChnMin);
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ModCommand *m;
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// Scan channel(s) for same effect type - if an effect of the same type is already present, exit.
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if(!settings.m_allowMultiple)
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{
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m = baseCommand;
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for(CHANNELINDEX i = scanChnMin; i <= scanChnMax; i++, m++)
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{
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if(!settings.m_isVolEffect && m->command == settings.m_command)
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return true;
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if(settings.m_isVolEffect && m->volcmd == settings.m_volcmd)
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return true;
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}
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}
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// Easy case: check if there's some space left to put the effect somewhere
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m = baseCommand;
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for(CHANNELINDEX i = scanChnMin; i <= scanChnMax; i++, m++)
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{
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if(!settings.m_isVolEffect && m->command == CMD_NONE)
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{
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m->command = settings.m_command;
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m->param = settings.m_param;
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return true;
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}
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if(settings.m_isVolEffect && m->volcmd == VOLCMD_NONE)
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{
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m->volcmd = settings.m_volcmd;
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m->vol = settings.m_vol;
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return true;
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}
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}
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// Ok, apparently there's no space. If we haven't tried already, try to map it to the volume column or effect column instead.
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if(settings.m_retry)
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{
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const bool isS3M = (GetSoundFile().GetType() & MOD_TYPE_S3M);
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// Move some effects that also work in the volume column, so there's place for our new effect.
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if(!settings.m_isVolEffect)
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{
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m = baseCommand;
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for(CHANNELINDEX i = scanChnMin; i <= scanChnMax; i++, m++)
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{
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switch(m->command)
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{
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case CMD_VOLUME:
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if(!GetSoundFile().GetModSpecifications().HasVolCommand(VOLCMD_VOLUME))
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{
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break;
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}
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m->volcmd = VOLCMD_VOLUME;
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m->vol = m->param;
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m->command = settings.m_command;
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m->param = settings.m_param;
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return true;
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case CMD_PANNING8:
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if(isS3M && m->param > 0x80)
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{
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break;
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}
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m->volcmd = VOLCMD_PANNING;
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m->command = settings.m_command;
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if(isS3M)
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m->vol = (m->param + 1u) / 2u;
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else
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m->vol = (m->param + 2u) / 4u;
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m->param = settings.m_param;
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return true;
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default:
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break;
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}
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}
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}
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// Let's try it again by writing into the "other" effect column.
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if(settings.m_isVolEffect)
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{
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// Convert volume effect to normal effect
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ModCommand::COMMAND newCommand = CMD_NONE;
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ModCommand::PARAM newParam = settings.m_vol;
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switch(settings.m_volcmd)
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{
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case VOLCMD_PANNING:
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newCommand = CMD_PANNING8;
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newParam = mpt::saturate_cast<ModCommand::PARAM>(settings.m_vol * (isS3M ? 2u : 4u));
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break;
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case VOLCMD_VOLUME:
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newCommand = CMD_VOLUME;
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break;
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default:
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break;
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}
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if(newCommand != CMD_NONE)
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{
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settings.m_command = static_cast<EffectCommand>(newCommand);
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settings.m_param = newParam;
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settings.m_retry = false;
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}
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} else
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{
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// Convert normal effect to volume effect
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ModCommand::VOLCMD newVolCmd = VOLCMD_NONE;
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ModCommand::VOL newVol = settings.m_param;
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if(settings.m_command == CMD_PANNING8 && isS3M)
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{
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// This needs some manual fixing.
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if(settings.m_param <= 0x80)
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{
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// Can't have surround in volume column, only normal panning
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newVolCmd = VOLCMD_PANNING;
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newVol /= 2u;
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}
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} else
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{
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newVolCmd = settings.m_command;
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if(!ModCommand::ConvertVolEffect(newVolCmd, newVol, true))
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{
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// No Success :(
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newVolCmd = VOLCMD_NONE;
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}
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}
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if(newVolCmd != CMD_NONE)
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{
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settings.m_volcmd = static_cast<VolumeCommand>(newVolCmd);
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settings.m_vol = newVol;
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settings.m_retry = false;
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}
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}
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if(!settings.m_retry)
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{
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settings.m_isVolEffect = !settings.m_isVolEffect;
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if(WriteEffect(settings))
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{
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return true;
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}
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}
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}
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// Try in the next row if possible (this may also happen if we already retried)
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if(settings.m_retryMode == EffectWriter::rmTryNextRow && settings.m_row + 1 < GetNumRows())
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{
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settings.m_row++;
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settings.m_retry = true;
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return WriteEffect(settings);
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} else if(settings.m_retryMode == EffectWriter::rmTryPreviousRow && settings.m_row > 0)
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{
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settings.m_row--;
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settings.m_retry = true;
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return WriteEffect(settings);
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}
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return false;
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}
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////////////////////////////////////////////////////////////////////////
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//
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// Pattern serialization functions
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//
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////////////////////////////////////////////////////////////////////////
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enum maskbits
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{
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noteBit = (1 << 0),
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instrBit = (1 << 1),
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volcmdBit = (1 << 2),
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volBit = (1 << 3),
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commandBit = (1 << 4),
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effectParamBit = (1 << 5),
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extraData = (1 << 6)
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};
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void WriteData(std::ostream& oStrm, const CPattern& pat);
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void ReadData(std::istream& iStrm, CPattern& pat, const size_t nSize = 0);
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void WriteModPattern(std::ostream& oStrm, const CPattern& pat)
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{
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srlztn::SsbWrite ssb(oStrm);
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ssb.BeginWrite(FileIdPattern, Version::Current().GetRawVersion());
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ssb.WriteItem(pat, "data", &WriteData);
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// pattern time signature
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if(pat.GetOverrideSignature())
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{
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ssb.WriteItem<uint32>(pat.GetRowsPerBeat(), "RPB.");
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ssb.WriteItem<uint32>(pat.GetRowsPerMeasure(), "RPM.");
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}
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if(pat.HasTempoSwing())
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{
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ssb.WriteItem<TempoSwing>(pat.GetTempoSwing(), "SWNG", TempoSwing::Serialize);
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}
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ssb.FinishWrite();
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}
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void ReadModPattern(std::istream& iStrm, CPattern& pat, const size_t)
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{
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srlztn::SsbRead ssb(iStrm);
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ssb.BeginRead(FileIdPattern, Version::Current().GetRawVersion());
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if ((ssb.GetStatus() & srlztn::SNT_FAILURE) != 0)
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return;
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ssb.ReadItem(pat, "data", &ReadData);
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// pattern time signature
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uint32 rpb = 0, rpm = 0;
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ssb.ReadItem<uint32>(rpb, "RPB.");
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ssb.ReadItem<uint32>(rpm, "RPM.");
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pat.SetSignature(rpb, rpm);
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TempoSwing swing;
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ssb.ReadItem<TempoSwing>(swing, "SWNG", TempoSwing::Deserialize);
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if(!swing.empty())
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swing.resize(pat.GetRowsPerBeat());
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pat.SetTempoSwing(swing);
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}
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static uint8 CreateDiffMask(const ModCommand &chnMC, const ModCommand &newMC)
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{
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uint8 mask = 0;
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if(chnMC.note != newMC.note)
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mask |= noteBit;
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if(chnMC.instr != newMC.instr)
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mask |= instrBit;
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if(chnMC.volcmd != newMC.volcmd)
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mask |= volcmdBit;
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if(chnMC.vol != newMC.vol)
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mask |= volBit;
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if(chnMC.command != newMC.command)
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mask |= commandBit;
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if(chnMC.param != newMC.param)
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mask |= effectParamBit;
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return mask;
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}
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// Writes pattern data. Adapted from SaveIT.
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void WriteData(std::ostream& oStrm, const CPattern& pat)
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{
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if(!pat.IsValid())
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return;
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const ROWINDEX rows = pat.GetNumRows();
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const CHANNELINDEX chns = pat.GetNumChannels();
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std::vector<ModCommand> lastChnMC(chns);
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for(ROWINDEX r = 0; r<rows; r++)
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{
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for(CHANNELINDEX c = 0; c<chns; c++)
|
|
{
|
|
const ModCommand m = *pat.GetpModCommand(r, c);
|
|
// Writing only commands not written in IT-pattern writing:
|
|
// For now this means only NOTE_PC and NOTE_PCS.
|
|
if(!m.IsPcNote())
|
|
continue;
|
|
uint8 diffmask = CreateDiffMask(lastChnMC[c], m);
|
|
uint8 chval = static_cast<uint8>(c+1);
|
|
if(diffmask != 0)
|
|
chval |= IT_bitmask_patternChanEnabled_c;
|
|
|
|
mpt::IO::WriteIntLE<uint8>(oStrm, chval);
|
|
|
|
if(diffmask)
|
|
{
|
|
lastChnMC[c] = m;
|
|
mpt::IO::WriteIntLE<uint8>(oStrm, diffmask);
|
|
if(diffmask & noteBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.note);
|
|
if(diffmask & instrBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.instr);
|
|
if(diffmask & volcmdBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.volcmd);
|
|
if(diffmask & volBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.vol);
|
|
if(diffmask & commandBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.command);
|
|
if(diffmask & effectParamBit) mpt::IO::WriteIntLE<uint8>(oStrm, m.param);
|
|
}
|
|
}
|
|
mpt::IO::WriteIntLE<uint8>(oStrm, 0); // Write end of row marker.
|
|
}
|
|
}
|
|
|
|
|
|
#define READITEM(itembit,id) \
|
|
if(diffmask & itembit) \
|
|
{ \
|
|
mpt::IO::ReadIntLE<uint8>(iStrm, temp); \
|
|
if(ch < chns) \
|
|
lastChnMC[ch].id = temp; \
|
|
} \
|
|
if(ch < chns) \
|
|
m.id = lastChnMC[ch].id;
|
|
|
|
|
|
void ReadData(std::istream& iStrm, CPattern& pat, const size_t)
|
|
{
|
|
if (!pat.IsValid()) // Expecting patterns to be allocated and resized properly.
|
|
return;
|
|
|
|
const CHANNELINDEX chns = pat.GetNumChannels();
|
|
const ROWINDEX rows = pat.GetNumRows();
|
|
|
|
std::vector<ModCommand> lastChnMC(chns);
|
|
|
|
ROWINDEX row = 0;
|
|
while(row < rows && iStrm.good())
|
|
{
|
|
uint8 t = 0;
|
|
mpt::IO::ReadIntLE<uint8>(iStrm, t);
|
|
if(t == 0)
|
|
{
|
|
row++;
|
|
continue;
|
|
}
|
|
|
|
CHANNELINDEX ch = (t & IT_bitmask_patternChanField_c);
|
|
if(ch > 0)
|
|
ch--;
|
|
|
|
uint8 diffmask = 0;
|
|
if((t & IT_bitmask_patternChanEnabled_c) != 0)
|
|
mpt::IO::ReadIntLE<uint8>(iStrm, diffmask);
|
|
uint8 temp = 0;
|
|
|
|
ModCommand dummy = ModCommand::Empty();
|
|
ModCommand& m = (ch < chns) ? *pat.GetpModCommand(row, ch) : dummy;
|
|
|
|
READITEM(noteBit, note);
|
|
READITEM(instrBit, instr);
|
|
READITEM(volcmdBit, volcmd);
|
|
READITEM(volBit, vol);
|
|
READITEM(commandBit, command);
|
|
READITEM(effectParamBit, param);
|
|
if(diffmask & extraData)
|
|
{
|
|
//Ignore additional data.
|
|
uint8 size;
|
|
mpt::IO::ReadIntLE<uint8>(iStrm, size);
|
|
iStrm.ignore(size);
|
|
}
|
|
}
|
|
}
|
|
|
|
#undef READITEM
|
|
|
|
|
|
OPENMPT_NAMESPACE_END
|