696 lines
17 KiB
C++
696 lines
17 KiB
C++
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/*
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* REminiscence - Flashback interpreter
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* Copyright (C) 2005-2015 Gregory Montoir (cyx@users.sourceforge.net)
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*/
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#include "file.h"
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#include "mixer.h"
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#include "mod_player.h"
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#include "util.h"
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#ifdef USE_MODPLUG
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#include <libmodplug/modplug.h>
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struct ModPlayer_impl {
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ModPlugFile *_mf;
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ModPlug_Settings _settings;
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bool _repeatIntro;
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ModPlayer_impl()
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: _mf(0) {
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}
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void init(const int rate) {
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memset(&_settings, 0, sizeof(_settings));
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ModPlug_GetSettings(&_settings);
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_settings.mFlags = MODPLUG_ENABLE_OVERSAMPLING | MODPLUG_ENABLE_NOISE_REDUCTION;
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_settings.mChannels = 1;
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_settings.mBits = 16;
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_settings.mFrequency = rate;
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_settings.mResamplingMode = MODPLUG_RESAMPLE_FIR;
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_settings.mLoopCount = -1;
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ModPlug_SetSettings(&_settings);
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}
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bool load(File *f) {
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const uint32_t size = f->size();
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uint8_t *data = (uint8_t *)malloc(size);
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if (data) {
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f->read(data, size);
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_mf = ModPlug_Load(data, size);
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}
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return _mf != 0;
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}
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void unload() {
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if (_mf) {
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ModPlug_Unload(_mf);
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_mf = 0;
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}
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}
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bool mix(int16_t *buf, int len) {
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if (_mf) {
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const int order = ModPlug_GetCurrentOrder(_mf);
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if (order == 3 && _repeatIntro) {
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ModPlug_SeekOrder(_mf, 1);
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_repeatIntro = false;
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}
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const int count = ModPlug_Read(_mf, buf, len * sizeof(int16_t));
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// setting mLoopCount to non-zero does not trigger any looping in
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// my test and ModPlug_Read returns 0.
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// looking at the libmodplug-0.8.8 tarball, it seems the variable
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// m_nRepeatCount is commented in sndmix.cpp. Not sure how if this
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// is a known bug, we workaround it here.
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if (count == 0) {
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ModPlug_SeekOrder(_mf, 0);
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}
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return true;
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}
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return false;
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}
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};
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#else
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struct ModPlayer_impl {
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enum {
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NUM_SAMPLES = 31,
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NUM_TRACKS = 4,
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NUM_PATTERNS = 128,
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FRAC_BITS = 12,
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PAULA_FREQ = 3546897
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};
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struct SampleInfo {
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char name[23];
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uint16_t len;
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uint8_t fineTune;
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uint8_t volume;
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uint16_t repeatPos;
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uint16_t repeatLen;
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int8_t *data;
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int8_t getPCM(int offset) const {
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if (offset < 0) {
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offset = 0;
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} else if (offset >= (int)len) {
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offset = len - 1;
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}
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return data[offset];
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}
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};
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struct ModuleInfo {
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char songName[21];
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SampleInfo samples[NUM_SAMPLES];
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uint8_t numPatterns;
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uint8_t patternOrderTable[NUM_PATTERNS];
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uint8_t *patternsTable;
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};
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struct Track {
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SampleInfo *sample;
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uint8_t volume;
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int pos;
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int freq;
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uint16_t period;
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uint16_t periodIndex;
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uint16_t effectData;
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int vibratoSpeed;
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int vibratoAmp;
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int vibratoPos;
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int portamento;
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int portamentoSpeed;
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int retriggerCounter;
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int delayCounter;
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int cutCounter;
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};
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bool _playing;
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int _mixingRate;
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ModuleInfo _modInfo;
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uint8_t _currentPatternOrder;
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uint8_t _currentPatternPos;
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uint8_t _currentTick;
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uint8_t _songSpeed;
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uint8_t _songTempo;
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int _patternDelay;
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int _patternLoopPos;
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int _patternLoopCount;
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int _samplesLeft;
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bool _repeatIntro;
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Track _tracks[NUM_TRACKS];
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ModPlayer_impl();
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void init(const int rate);
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uint16_t findPeriod(uint16_t period, uint8_t fineTune) const;
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bool load(File *f);
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void unload();
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void handleNote(int trackNum, uint32_t noteData);
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void handleTick();
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void applyVolumeSlide(int trackNum, int amount);
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void applyVibrato(int trackNum);
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void applyPortamento(int trackNum);
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void handleEffect(int trackNum, bool tick);
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void mixSamples(int8_t *buf, int len);
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bool mixS8(int8_t *buf, int len);
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bool mix(int16_t *buf, int len);
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};
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ModPlayer_impl::ModPlayer_impl()
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: _playing(false) {
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memset(&_modInfo, 0, sizeof(_modInfo));
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}
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uint16_t ModPlayer_impl::findPeriod(uint16_t period, uint8_t fineTune) const {
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for (int p = 0; p < 36; ++p) {
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if (ModPlayer::_periodTable[p] == period) {
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return fineTune * 36 + p;
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}
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}
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error("Invalid period=%d", period);
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return 0;
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}
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void ModPlayer_impl::init(const int rate) {
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_mixingRate = rate;
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}
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bool ModPlayer_impl::load(File *f) {
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f->read(_modInfo.songName, 20);
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_modInfo.songName[20] = 0;
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debug(DBG_MOD, "songName = '%s'", _modInfo.songName);
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for (int s = 0; s < NUM_SAMPLES; ++s) {
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SampleInfo *si = &_modInfo.samples[s];
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f->read(si->name, 22);
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si->name[22] = 0;
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si->len = f->readUint16BE() * 2;
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si->fineTune = f->readByte();
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si->volume = f->readByte();
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si->repeatPos = f->readUint16BE() * 2;
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si->repeatLen = f->readUint16BE() * 2;
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si->data = 0;
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assert(si->len == 0 || si->repeatPos + si->repeatLen <= si->len);
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debug(DBG_MOD, "sample=%d name='%s' len=%d vol=%d", s, si->name, si->len, si->volume);
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}
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_modInfo.numPatterns = f->readByte();
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assert(_modInfo.numPatterns < NUM_PATTERNS);
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f->readByte(); // 0x7F
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f->read(_modInfo.patternOrderTable, NUM_PATTERNS);
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f->readUint32BE(); // 'M.K.', Protracker, 4 channels
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uint16_t n = 0;
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for (int i = 0; i < NUM_PATTERNS; ++i) {
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if (_modInfo.patternOrderTable[i] != 0) {
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n = MAX(n, _modInfo.patternOrderTable[i]);
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}
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}
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debug(DBG_MOD, "numPatterns=%d",n + 1);
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n = (n + 1) * 64 * 4 * 4; // 64 lines of 4 notes per channel
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_modInfo.patternsTable = (uint8_t *)malloc(n);
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assert(_modInfo.patternsTable);
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f->read(_modInfo.patternsTable, n);
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for (int s = 0; s < NUM_SAMPLES; ++s) {
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SampleInfo *si = &_modInfo.samples[s];
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if (si->len != 0) {
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si->data = (int8_t *)malloc(si->len);
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if (si->data) {
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f->read(si->data, si->len);
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}
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}
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}
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_currentPatternOrder = 0;
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_currentPatternPos = 0;
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_currentTick = 0;
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_patternDelay = 0;
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_songSpeed = 6;
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_songTempo = 125;
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_patternLoopPos = 0;
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_patternLoopCount = -1;
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_samplesLeft = 0;
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_repeatIntro = false;
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memset(_tracks, 0, sizeof(_tracks));
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_playing = true;
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return true;
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}
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void ModPlayer_impl::unload() {
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if (_modInfo.songName[0]) {
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free(_modInfo.patternsTable);
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for (int s = 0; s < NUM_SAMPLES; ++s) {
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free(_modInfo.samples[s].data);
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}
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memset(&_modInfo, 0, sizeof(_modInfo));
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}
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_playing = false;
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}
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void ModPlayer_impl::handleNote(int trackNum, uint32_t noteData) {
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Track *tk = &_tracks[trackNum];
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uint16_t sampleNum = ((noteData >> 24) & 0xF0) | ((noteData >> 12) & 0xF);
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uint16_t samplePeriod = (noteData >> 16) & 0xFFF;
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uint16_t effectData = noteData & 0xFFF;
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debug(DBG_MOD, "ModPlayer::handleNote(%d) p=%d/%d sampleNumber=0x%X samplePeriod=0x%X effectData=0x%X tk->period=%d", trackNum, _currentPatternPos, _currentPatternOrder, sampleNum, samplePeriod, effectData, tk->period);
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if (sampleNum != 0) {
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tk->sample = &_modInfo.samples[sampleNum - 1];
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tk->volume = tk->sample->volume;
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tk->pos = 0;
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}
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if (samplePeriod != 0) {
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tk->periodIndex = findPeriod(samplePeriod, tk->sample->fineTune);
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if ((effectData >> 8) != 0x3 && (effectData >> 8) != 0x5) {
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tk->period = ModPlayer::_periodTable[tk->periodIndex];
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tk->freq = PAULA_FREQ / tk->period;
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} else {
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tk->portamento = ModPlayer::_periodTable[tk->periodIndex];
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}
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tk->vibratoAmp = 0;
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tk->vibratoSpeed = 0;
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tk->vibratoPos = 0;
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}
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tk->effectData = effectData;
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}
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void ModPlayer_impl::applyVolumeSlide(int trackNum, int amount) {
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debug(DBG_MOD, "ModPlayer::applyVolumeSlide(%d, %d)", trackNum, amount);
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Track *tk = &_tracks[trackNum];
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int vol = tk->volume + amount;
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if (vol < 0) {
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vol = 0;
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} else if (vol > 64) {
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vol = 64;
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}
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tk->volume = vol;
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}
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void ModPlayer_impl::applyVibrato(int trackNum) {
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static const int8_t sineWaveTable[] = {
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0, 24, 49, 74, 97, 120, -115, -95, -76, -59, -44, -32, -21, -12, -6, -3,
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-1, -3, -6, -12, -21, -32, -44, -59, -76, -95, -115, 120, 97, 74, 49, 24,
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0, -24, -49, -74, -97, -120, 115, 95, 76, 59, 44, 32, 21, 12, 6, 3,
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1, 3, 6, 12, 21, 32, 44, 59, 76, 95, 115, -120, -97, -74, -49, -24
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};
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debug(DBG_MOD, "ModPlayer::applyVibrato(%d)", trackNum);
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Track *tk = &_tracks[trackNum];
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int vib = tk->vibratoAmp * sineWaveTable[tk->vibratoPos] / 128;
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if (tk->period + vib != 0) {
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tk->freq = PAULA_FREQ / (tk->period + vib);
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}
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tk->vibratoPos += tk->vibratoSpeed;
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if (tk->vibratoPos >= 64) {
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tk->vibratoPos = 0;
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}
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}
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void ModPlayer_impl::applyPortamento(int trackNum) {
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debug(DBG_MOD, "ModPlayer::applyPortamento(%d)", trackNum);
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Track *tk = &_tracks[trackNum];
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if (tk->period < tk->portamento) {
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tk->period = MIN(tk->period + tk->portamentoSpeed, tk->portamento);
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} else if (tk->period > tk->portamento) {
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tk->period = MAX(tk->period - tk->portamentoSpeed, tk->portamento);
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}
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if (tk->period != 0) {
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tk->freq = PAULA_FREQ / tk->period;
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}
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}
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void ModPlayer_impl::handleEffect(int trackNum, bool tick) {
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Track *tk = &_tracks[trackNum];
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uint8_t effectNum = tk->effectData >> 8;
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uint8_t effectXY = tk->effectData & 0xFF;
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uint8_t effectX = effectXY >> 4;
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uint8_t effectY = effectXY & 0xF;
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debug(DBG_MOD, "ModPlayer::handleEffect(%d) effectNum=0x%X effectXY=0x%X", trackNum, effectNum, effectXY);
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switch (effectNum) {
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case 0x0: // arpeggio
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if (tick && effectXY != 0) {
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uint16_t period = tk->period;
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switch (_currentTick & 3) {
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case 1:
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period = ModPlayer::_periodTable[tk->periodIndex + effectX];
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break;
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case 2:
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period = ModPlayer::_periodTable[tk->periodIndex + effectY];
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break;
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}
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tk->freq = PAULA_FREQ / period;
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}
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break;
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case 0x1: // portamento up
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if (tick) {
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tk->period -= effectXY;
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if (tk->period < 113) { // note B-3
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tk->period = 113;
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}
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tk->freq = PAULA_FREQ / tk->period;
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}
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break;
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case 0x2: // portamento down
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if (tick) {
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tk->period += effectXY;
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if (tk->period > 856) { // note C-1
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tk->period = 856;
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}
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tk->freq = PAULA_FREQ / tk->period;
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}
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break;
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case 0x3: // tone portamento
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if (!tick) {
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if (effectXY != 0) {
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tk->portamentoSpeed = effectXY;
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}
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} else {
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applyPortamento(trackNum);
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}
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break;
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case 0x4: // vibrato
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if (!tick) {
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if (effectX != 0) {
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tk->vibratoSpeed = effectX;
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}
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if (effectY != 0) {
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tk->vibratoAmp = effectY;
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}
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} else {
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applyVibrato(trackNum);
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}
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break;
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case 0x5: // tone portamento + volume slide
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if (tick) {
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applyPortamento(trackNum);
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applyVolumeSlide(trackNum, effectX - effectY);
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}
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break;
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case 0x6: // vibrato + volume slide
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if (tick) {
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applyVibrato(trackNum);
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applyVolumeSlide(trackNum, effectX - effectY);
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}
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break;
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case 0x9: // set sample offset
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if (!tick) {
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tk->pos = effectXY << (8 + FRAC_BITS);
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}
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break;
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case 0xA: // volume slide
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if (tick) {
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applyVolumeSlide(trackNum, effectX - effectY);
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}
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break;
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case 0xB: // position jump
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if (!tick) {
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_currentPatternOrder = effectXY;
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_currentPatternPos = 0;
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assert(_currentPatternOrder < _modInfo.numPatterns);
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}
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break;
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case 0xC: // set volume
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if (!tick) {
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assert(effectXY <= 64);
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tk->volume = effectXY;
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}
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break;
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case 0xD: // pattern break
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if (!tick) {
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_currentPatternPos = effectX * 10 + effectY;
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assert(_currentPatternPos < 64);
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++_currentPatternOrder;
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debug(DBG_MOD, "_currentPatternPos = %d _currentPatternOrder = %d", _currentPatternPos, _currentPatternOrder);
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}
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break;
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case 0xE: // extended effects
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switch (effectX) {
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case 0x0: // set filter, ignored
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break;
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case 0x1: // fineslide up
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if (!tick) {
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tk->period -= effectY;
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if (tk->period < 113) { // B-3 note
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tk->period = 113;
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}
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tk->freq = PAULA_FREQ / tk->period;
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}
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break;
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case 0x2: // fineslide down
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if (!tick) {
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tk->period += effectY;
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if (tk->period > 856) { // C-1 note
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tk->period = 856;
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}
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tk->freq = PAULA_FREQ / tk->period;
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}
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break;
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case 0x6: // loop pattern
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if (!tick) {
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if (effectY == 0) {
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_patternLoopPos = _currentPatternPos | (_currentPatternOrder << 8);
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debug(DBG_MOD, "_patternLoopPos=%d/%d", _currentPatternPos, _currentPatternOrder);
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} else {
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if (_patternLoopCount == -1) {
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_patternLoopCount = effectY;
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_currentPatternPos = _patternLoopPos & 0xFF;
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_currentPatternOrder = _patternLoopPos >> 8;
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} else {
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--_patternLoopCount;
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if (_patternLoopCount != 0) {
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_currentPatternPos = _patternLoopPos & 0xFF;
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_currentPatternOrder = _patternLoopPos >> 8;
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} else {
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_patternLoopCount = -1;
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}
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}
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debug(DBG_MOD, "_patternLoopCount=%d", _patternLoopCount);
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}
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}
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break;
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case 0x9: // retrigger sample
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if (tick) {
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tk->retriggerCounter = effectY;
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} else {
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if (tk->retriggerCounter == 0) {
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tk->pos = 0;
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tk->retriggerCounter = effectY;
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debug(DBG_MOD, "retrigger sample=%d _songSpeed=%d", effectY, _songSpeed);
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}
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--tk->retriggerCounter;
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}
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break;
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case 0xA: // fine volume slide up
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if (!tick) {
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applyVolumeSlide(trackNum, effectY);
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}
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break;
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case 0xB: // fine volume slide down
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if (!tick) {
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applyVolumeSlide(trackNum, -effectY);
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}
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break;
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case 0xC: // cut sample
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if (!tick) {
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tk->cutCounter = effectY;
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} else {
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--tk->cutCounter;
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if (tk->cutCounter == 0) {
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tk->volume = 0;
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}
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}
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case 0xD: // delay sample
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if (!tick) {
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tk->delayCounter = effectY;
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} else {
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if (tk->delayCounter != 0) {
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--tk->delayCounter;
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}
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}
|
|
break;
|
|
case 0xE: // delay pattern
|
|
if (!tick) {
|
|
debug(DBG_MOD, "ModPlayer::handleEffect() _currentTick=%d delay pattern=%d", _currentTick, effectY);
|
|
_patternDelay = effectY;
|
|
}
|
|
break;
|
|
default:
|
|
warning("Unhandled extended effect 0x%X params=0x%X", effectX, effectY);
|
|
break;
|
|
}
|
|
break;
|
|
case 0xF: // set speed
|
|
if (!tick) {
|
|
if (effectXY < 0x20) {
|
|
_songSpeed = effectXY;
|
|
} else {
|
|
_songTempo = effectXY;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
warning("Unhandled effect 0x%X params=0x%X", effectNum, effectXY);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void ModPlayer_impl::handleTick() {
|
|
if (!_playing) {
|
|
return;
|
|
}
|
|
// if (_patternDelay != 0) {
|
|
// --_patternDelay;
|
|
// return;
|
|
// }
|
|
if (_currentTick == 0) {
|
|
debug(DBG_MOD, "_currentPatternOrder=%d _currentPatternPos=%d", _currentPatternOrder, _currentPatternPos);
|
|
uint8_t currentPattern = _modInfo.patternOrderTable[_currentPatternOrder];
|
|
const uint8_t *p = _modInfo.patternsTable + (currentPattern * 64 + _currentPatternPos) * 16;
|
|
for (int i = 0; i < NUM_TRACKS; ++i) {
|
|
uint32_t noteData = READ_BE_UINT32(p);
|
|
handleNote(i, noteData);
|
|
p += 4;
|
|
}
|
|
++_currentPatternPos;
|
|
if (_currentPatternPos == 64) {
|
|
++_currentPatternOrder;
|
|
_currentPatternPos = 0;
|
|
debug(DBG_MOD, "ModPlayer::handleTick() _currentPatternOrder = %d/%d", _currentPatternOrder, _modInfo.numPatterns);
|
|
// On the amiga version, the introduction cutscene is shorter than the PC version ;
|
|
// so the music module doesn't synchronize at all with the PC datafiles, here we
|
|
// add a hack to let the music play longer
|
|
if (_currentPatternOrder == 3 && _repeatIntro) {
|
|
_currentPatternOrder = 1;
|
|
_repeatIntro = false;
|
|
// warning("Introduction module synchronization hack");
|
|
}
|
|
}
|
|
}
|
|
for (int i = 0; i < NUM_TRACKS; ++i) {
|
|
handleEffect(i, (_currentTick != 0));
|
|
}
|
|
++_currentTick;
|
|
if (_currentTick == _songSpeed) {
|
|
_currentTick = 0;
|
|
}
|
|
if (_currentPatternOrder == _modInfo.numPatterns) {
|
|
debug(DBG_MOD, "ModPlayer::handleEffect() _currentPatternOrder == _modInfo.numPatterns");
|
|
// _playing = false;
|
|
_currentPatternOrder = 0;
|
|
}
|
|
}
|
|
|
|
void ModPlayer_impl::mixSamples(int8_t *buf, int samplesLen) {
|
|
for (int i = 0; i < NUM_TRACKS; ++i) {
|
|
Track *tk = &_tracks[i];
|
|
if (tk->sample != 0 && tk->delayCounter == 0) {
|
|
int8_t *mixbuf = buf;
|
|
SampleInfo *si = tk->sample;
|
|
int len = si->len << FRAC_BITS;
|
|
int loopLen = si->repeatLen << FRAC_BITS;
|
|
int loopPos = si->repeatPos << FRAC_BITS;
|
|
int deltaPos = (tk->freq << FRAC_BITS) / _mixingRate;
|
|
int curLen = samplesLen;
|
|
int pos = tk->pos;
|
|
while (curLen != 0) {
|
|
int count;
|
|
if (loopLen > (2 << FRAC_BITS)) {
|
|
if (pos >= loopPos + loopLen) {
|
|
pos -= loopLen;
|
|
}
|
|
count = MIN(curLen, (loopPos + loopLen - pos - 1) / deltaPos + 1);
|
|
curLen -= count;
|
|
} else {
|
|
if (pos >= len) {
|
|
count = 0;
|
|
} else {
|
|
count = MIN(curLen, (len - pos - 1) / deltaPos + 1);
|
|
}
|
|
curLen = 0;
|
|
}
|
|
while (count--) {
|
|
const int out = si->getPCM(pos >> FRAC_BITS);
|
|
*mixbuf = ADDC_S8(*mixbuf, out * tk->volume / 64);
|
|
++mixbuf;
|
|
pos += deltaPos;
|
|
}
|
|
}
|
|
tk->pos = pos;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool ModPlayer_impl::mixS8(int8_t *buf, int len) {
|
|
if (_playing) {
|
|
const int samplesPerTick = _mixingRate / (50 * _songTempo / 125);
|
|
while (len != 0) {
|
|
if (_samplesLeft == 0) {
|
|
handleTick();
|
|
_samplesLeft = samplesPerTick;
|
|
}
|
|
int count = _samplesLeft;
|
|
if (count > len) {
|
|
count = len;
|
|
}
|
|
_samplesLeft -= count;
|
|
len -= count;
|
|
mixSamples(buf, count);
|
|
buf += count;
|
|
}
|
|
}
|
|
return _playing;
|
|
}
|
|
|
|
bool ModPlayer_impl::mix(int16_t *samples, int len) {
|
|
int8_t buf[len];
|
|
memset(buf, 0, sizeof(buf));
|
|
const bool ret = mixS8(buf, len);
|
|
for (int i = 0; i < len; ++i) {
|
|
samples[i] = buf[i] << 8;
|
|
}
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
ModPlayer::ModPlayer(Mixer *mixer, FileSystem *fs)
|
|
: _playing(false), _mix(mixer), _fs(fs) {
|
|
_impl = new ModPlayer_impl;
|
|
}
|
|
|
|
ModPlayer::~ModPlayer() {
|
|
delete _impl;
|
|
}
|
|
|
|
void ModPlayer::play(int num) {
|
|
if (num < _modulesFilesCount) {
|
|
File f;
|
|
for (uint8_t i = 0; i < ARRAYSIZE(_modulesFiles[num]); ++i) {
|
|
if (f.open(_modulesFiles[num][i], "rb", _fs)) {
|
|
_impl->init(_mix->getSampleRate());
|
|
if (_impl->load(&f)) {
|
|
_impl->_repeatIntro = (num == 0) && !_isAmiga;
|
|
_mix->setPremixHook(mixCallback, _impl);
|
|
_playing = true;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ModPlayer::stop() {
|
|
if (_playing) {
|
|
_mix->setPremixHook(0, 0);
|
|
_impl->unload();
|
|
_playing = true;
|
|
}
|
|
}
|
|
|
|
bool ModPlayer::mixCallback(void *param, int16_t *buf, int len) {
|
|
return ((ModPlayer_impl *)param)->mix(buf, len);
|
|
}
|