From 43fb2e6ed9335831df31bead748f4fb7247c3272 Mon Sep 17 00:00:00 2001 From: Sven Hesse Date: Thu, 25 Jan 2007 15:17:46 +0000 Subject: Moved Paula and Infogrames to sound/mods/ svn-id: r25191 --- sound/mods/infogrames.cpp | 458 ++++++++++++++++++++++++++++++++++++++++++++++ sound/mods/infogrames.h | 150 +++++++++++++++ sound/mods/paula.cpp | 167 +++++++++++++++++ sound/mods/paula.h | 94 ++++++++++ sound/module.mk | 2 + 5 files changed, 871 insertions(+) create mode 100644 sound/mods/infogrames.cpp create mode 100644 sound/mods/infogrames.h create mode 100644 sound/mods/paula.cpp create mode 100644 sound/mods/paula.h (limited to 'sound') diff --git a/sound/mods/infogrames.cpp b/sound/mods/infogrames.cpp new file mode 100644 index 0000000000..e5eda6e838 --- /dev/null +++ b/sound/mods/infogrames.cpp @@ -0,0 +1,458 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2007 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#include "sound/mods/infogrames.h" +#include "common/endian.h" + +namespace Audio { + +Infogrames::Instruments::Instruments() { + init(); +} + +Infogrames::Instruments::~Instruments() { + if (_sampleData) + delete[] _sampleData; +} + +void Infogrames::Instruments::init() { + int i; + + for (i = 0; i < 32; i++) { + _samples[i].data = 0; + _samples[i].dataRepeat = 0; + _samples[i].length = 0; + _samples[i].lengthRepeat = 0; + } + _count = 0; + _sampleData = 0; +} + +bool Infogrames::Instruments::load(Common::SeekableReadStream &ins) { + int i; + uint32 fsize; + uint32 offset[32]; + uint32 offsetRepeat[32]; + uint32 dataOffset; + + unload(); + + fsize = ins.readUint32BE(); + dataOffset = fsize; + for (i = 0; (i < 32) && !ins.eos(); i++) { + offset[i] = ins.readUint32BE(); + offsetRepeat[i] = ins.readUint32BE(); + if ((offset[i] > fsize) || (offsetRepeat[i] > fsize) || + (offset[i] < (ins.pos() + 4)) || + (offsetRepeat[i] < (ins.pos() + 4))) { + // Definitely no real entry anymore + ins.seek(-8, SEEK_CUR); + break; + } + + dataOffset = MIN(dataOffset, MIN(offset[i], offsetRepeat[i])); + ins.skip(4); // Unknown + _samples[i].length = ins.readUint16BE() * 2; + _samples[i].lengthRepeat = ins.readUint16BE() * 2; + } + + if (dataOffset >= fsize) + return false; + + _count = i; + _sampleData = new int8[fsize - dataOffset]; + ins.seek(dataOffset + 4); + ins.read(_sampleData, fsize - dataOffset); + + for (i--; i >= 0; i--) { + _samples[i].data = _sampleData + (offset[i] - dataOffset); + _samples[i].dataRepeat = _sampleData + (offsetRepeat[i] - dataOffset); + } + + return true; +} + +void Infogrames::Instruments::unload(void) { + if (_sampleData) + delete[] _sampleData; + init(); +} + +const uint8 Infogrames::tickCount[] = + {2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 64, 96}; +const uint16 Infogrames::periods[] = + {0x6ACC, 0x64CC, 0x5F25, 0x59CE, 0x54C3, 0x5003, 0x4B86, 0x4747, 0x4346, + 0x3F8B, 0x3BF3, 0x3892, 0x3568, 0x3269, 0x2F93, 0x2CEA, 0x2A66, 0x2801, + 0x2566, 0x23A5, 0x21AF, 0x1FC4, 0x1DFE, 0x1C4E, 0x1ABC, 0x1936, 0x17CC, + 0x1676, 0x1533, 0x1401, 0x12E4, 0x11D5, 0x10D4, 0x0FE3, 0x0EFE, 0x0E26, + 0x0D5B, 0x0C9B, 0x0BE5, 0x0B3B, 0x0A9B, 0x0A02, 0x0972, 0x08E9, 0x0869, + 0x07F1, 0x077F, 0x0713, 0x06AD, 0x064D, 0x05F2, 0x059D, 0x054D, 0x0500, + 0x04B8, 0x0475, 0x0435, 0x03F8, 0x03BF, 0x038A, 0x0356, 0x0326, 0x02F9, + 0x02CF, 0x02A6, 0x0280, 0x025C, 0x023A, 0x021A, 0x01FC, 0x01E0, 0x01C5, + 0x01AB, 0x0193, 0x017D, 0x0167, 0x0153, 0x0140, 0x012E, 0x011D, 0x010D, + 0x00FE, 0x00F0, 0x00E2, 0x00D6, 0x00CA, 0x00BE, 0x00B4, 0x00AA, 0x00A0, + 0x0097, 0x008F, 0x0087, 0x007F, 0x0078, 0x0070, 0x0060, 0x0050, 0x0040, + 0x0030, 0x0020, 0x0010, 0x0000, 0x0000, 0x0020, 0x2020, 0x2020, 0x2020, + 0x2020, 0x3030, 0x3030, 0x3020, 0x2020, 0x2020, 0x2020, 0x2020, 0x2020, + 0x2020, 0x2020, 0x2020, 0x2090, 0x4040, 0x4040, 0x4040, 0x4040, 0x4040, + 0x4040, 0x4040, 0x400C, 0x0C0C, 0x0C0C, 0x0C0C, 0x0C0C, 0x0C40, 0x4040, + 0x4040, 0x4040, 0x0909, 0x0909, 0x0909, 0x0101, 0x0101, 0x0101, 0x0101, + 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x0101, 0x4040, 0x4040, 0x4040, + 0x0A0A, 0x0A0A, 0x0A0A, 0x0202, 0x0202, 0x0202, 0x0202, 0x0202, 0x0202, + 0x0202, 0x0202, 0x0202, 0x0202, 0x4040, 0x4040, 0x2000}; + +Infogrames::Infogrames(Instruments &ins, bool stereo, int rate) : + Paula(stereo, rate, rate/80) { + _instruments = &ins; + _data = 0; + _repCount = -1; + + reset(); +} + +Infogrames::~Infogrames() { + if (_data) + delete[] _data; +} + +void Infogrames::init() { + int i; + + _volume = 0; + _period = 0; + _sample = 0; + _speedCounter = _speed; + + for (i = 0; i < 4; i++) { + _chn[i].cmds = 0; + _chn[i].cmdBlocks = 0; + _chn[i].volSlide.finetuneNeg = 0; + _chn[i].volSlide.finetunePos = 0; + _chn[i].volSlide.data = 0; + _chn[i].volSlide.amount = 0; + _chn[i].volSlide.dataOffset = 0; + _chn[i].volSlide.flags = 0; + _chn[i].volSlide.curDelay1 = 0; + _chn[i].volSlide.curDelay2 = 0; + _chn[i].periodSlide.finetuneNeg = 0; + _chn[i].periodSlide.finetunePos = 0; + _chn[i].periodSlide.data = 0; + _chn[i].periodSlide.amount = 0; + _chn[i].periodSlide.dataOffset = 0; + _chn[i].periodSlide.flags = 0; + _chn[i].periodSlide.curDelay1 = 0; + _chn[i].periodSlide.curDelay2 = 0; + _chn[i].period = 0; + _chn[i].flags = 0x81; + _chn[i].ticks = 0; + _chn[i].tickCount = 0; + _chn[i].periodMod = 0; + } + + _end = _data == 0; +} + +void Infogrames::reset() { + int i; + + stopPlay(); + init(); + + _volSlideBlocks = 0; + _periodSlideBlocks = 0; + _subSong = 0; + _cmdBlocks = 0; + _speedCounter = 0; + _speed = 0; + + for (i = 0; i < 4; i++) + _chn[i].cmdBlockIndices = 0; +} + +bool Infogrames::load(Common::SeekableReadStream &dum) { + int subSong = 0; + int i; + uint32 size; + + size = dum.size(); + if (size < 20) + return false; + + _data = new uint8[size]; + dum.seek(0); + dum.read(_data, size); + + Common::MemoryReadStream dataStr(_data, size); + + dataStr.seek(subSong * 2); + dataStr.seek(dataStr.readUint16BE()); + _subSong = _data + dataStr.pos(); + if (_subSong > (_data + size)) + return false; + + _speedCounter = dataStr.readUint16BE(); + _speed = _speedCounter; + _volSlideBlocks = _subSong + dataStr.readUint16BE(); + _periodSlideBlocks = _subSong + dataStr.readUint16BE(); + for (i = 0; i < 4; i++) { + _chn[i].cmdBlockIndices = _subSong + dataStr.readUint16BE(); + _chn[i].flags = 0x81; + } + _cmdBlocks = _data + dataStr.pos() + 2; + + if ((_volSlideBlocks > (_data + size)) || + (_periodSlideBlocks > (_data + size)) || + (_chn[0].cmdBlockIndices > (_data + size)) || + (_chn[1].cmdBlockIndices > (_data + size)) || + (_chn[2].cmdBlockIndices > (_data + size)) || + (_chn[3].cmdBlockIndices > (_data + size)) || + (_cmdBlocks > (_data + size))) + return false; + + _end = false; + _playing = true; + return true; +} + +void Infogrames::unload(void) { + stopPlay(); + + if (_data) + delete[] _data; + _data = 0; + + clearVoices(); + reset(); + + _end = true; +} + +void Infogrames::getNextSample(Channel &chn) { + byte *data; + byte cmdBlock; + uint16 cmd; + bool cont = false; + + if (chn.flags & 64) + return; + + if (chn.flags & 1) { + chn.flags &= ~1; + chn.cmdBlocks = chn.cmdBlockIndices; + } else { + chn.flags &= ~1; + if (_speedCounter == 0) + chn.ticks--; + if (chn.ticks != 0) { + _volume = MAX((int16) 0, tune(chn.volSlide, 0)); + _period = tune(chn.periodSlide, chn.period); + return; + } else { + chn.ticks = chn.tickCount; + cont = true; + } + } + + while (1) { + while (cont || ((cmdBlock = *chn.cmdBlocks) != 0xFF)) { + if (!cont) { + chn.cmdBlocks++; + chn.cmds = _subSong + + READ_BE_UINT16(_cmdBlocks + (cmdBlock * 2)); + } else + cont = false; + while ((cmd = *chn.cmds) != 0xFF) { + chn.cmds++; + if (cmd & 128) + { + switch (cmd & 0xE0) { + case 0x80: // 100xxxxx - Set ticks + chn.ticks = tickCount[cmd & 0xF]; + chn.tickCount = tickCount[cmd & 0xF]; + break; + case 0xA0: // 101xxxxx - Set sample + _sample = cmd & 0x1F; + break; + case 0xC0: // 110xxxxx - Set volume slide/finetune + data = _volSlideBlocks + (cmd & 0x1F) * 13; + chn.volSlide.flags = (*data & 0x80) | 1; + chn.volSlide.amount = *data++ & 0x7F; + chn.volSlide.data = data; + chn.volSlide.dataOffset = 0; + chn.volSlide.finetunePos = 0; + chn.volSlide.finetuneNeg = 0; + chn.volSlide.curDelay1 = 0; + chn.volSlide.curDelay2 = 0; + break; + case 0xE0: // 111xxxxx - Extended + switch(cmd & 0x1F) { + case 0: // Set period modifier + chn.periodMod = (int8) *chn.cmds++; + break; + case 1: // Set continuous period slide + chn.periodSlide.data = + _periodSlideBlocks + *chn.cmds++ * 13 + 1; + chn.periodSlide.amount = 0; + chn.periodSlide.dataOffset = 0; + chn.periodSlide.finetunePos = 0; + chn.periodSlide.finetuneNeg = 0; + chn.periodSlide.curDelay1 = 0; + chn.periodSlide.curDelay2 = 0; + chn.periodSlide.flags = 0x81; + break; + case 2: // Set non-continuous period slide + chn.periodSlide.data = + _periodSlideBlocks + *chn.cmds++ * 13 + 1; + chn.periodSlide.amount = 0; + chn.periodSlide.dataOffset = 0; + chn.periodSlide.finetunePos = 0; + chn.periodSlide.finetuneNeg = 0; + chn.periodSlide.curDelay1 = 0; + chn.periodSlide.curDelay2 = 0; + chn.periodSlide.flags = 1; + break; + case 3: // NOP + break; + default: + warning("Unknown Infogrames command: %X", cmd); + } + break; + } + } else { // 0xxxxxxx - Set period + if (cmd != 0) + cmd += chn.periodMod; + chn.period = periods[cmd]; + chn.volSlide.dataOffset = 0; + chn.volSlide.finetunePos = 0; + chn.volSlide.finetuneNeg = 0; + chn.volSlide.curDelay1 = 0; + chn.volSlide.curDelay2 = 0; + chn.volSlide.flags |= 1; + chn.volSlide.flags &= ~4; + chn.periodSlide.dataOffset = 0; + chn.periodSlide.finetunePos = 0; + chn.periodSlide.finetuneNeg = 0; + chn.periodSlide.curDelay1 = 0; + chn.periodSlide.curDelay2 = 0; + chn.periodSlide.flags |= 1; + chn.periodSlide.flags &= ~4; + _volume = MAX((int16) 0, tune(chn.volSlide, 0)); + _period = tune(chn.periodSlide, chn.period); + return; + } + } + } + if (!(chn.flags & 32)) { + chn.flags |= 0x40; + _volume = 0; + return; + } else + chn.cmdBlocks = chn.cmdBlockIndices; + } +} + +int16 Infogrames::tune(Slide &slide, int16 start) const { + byte *data; + uint8 off; + + data = slide.data + slide.dataOffset; + + if (slide.flags & 1) + slide.finetunePos += (int8) data[1]; + slide.flags &= ~1; + + start += slide.finetunePos - slide.finetuneNeg; + if (start < 0) + start = 0; + + if (slide.flags & 4) + return start; + + slide.curDelay1++; + if (slide.curDelay1 != data[2]) + return start; + slide.curDelay2++; + slide.curDelay1 = 0; + if (slide.curDelay2 == data[0]) { + slide.curDelay2 = 0; + off = slide.dataOffset + 3; + if (off == 12) { + if (slide.flags == 0) { + slide.flags |= 4; + return start; + } else { + slide.curDelay2 = 0; + slide.finetuneNeg += slide.amount; + off = 3; + } + } + slide.dataOffset = off; + } + slide.flags |= 1; + return start; +} + +void Infogrames::interrupt() { + int chn; + + if (!_data) { + clearVoices(); + return; + } + + _speedCounter--; + _sample = 0xFF; + for (chn = 0; chn < 4; chn++) { + _volume = 0; + _period = 0; + getNextSample(_chn[chn]); + _voice[chn].volume = _volume; + _voice[chn].period = _period; + if ((_sample != 0xFF) && (_sample < _instruments->_count)) { + _voice[chn].data = _instruments->_samples[_sample].data; + _voice[chn].length = _instruments->_samples[_sample].length; + _voice[chn].dataRepeat = _instruments->_samples[_sample].dataRepeat; + _voice[chn].lengthRepeat = + _instruments->_samples[_sample].lengthRepeat; + _voice[chn].offset = 0; + _sample = 0xFF; + } + } + if (_speedCounter == 0) + _speedCounter = _speed; + + // End reached? + if ((_chn[0].flags & 64) && (_chn[1].flags & 64) && + (_chn[2].flags & 64) && (_chn[3].flags & 64)) { + if (_repCount > 0) { + _repCount--; + init(); + } else if (_repCount != -1) { + _end = true; + _playing = false; + } + else + init(); + } +} + +} // End of namespace Audio diff --git a/sound/mods/infogrames.h b/sound/mods/infogrames.h new file mode 100644 index 0000000000..78bc9efd82 --- /dev/null +++ b/sound/mods/infogrames.h @@ -0,0 +1,150 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2007 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#ifndef SOUND_MODS_INFOGRAMES_H +#define SOUND_MODS_INFOGRAMES_H + +#include "sound/mods/paula.h" +#include "common/stream.h" +#include "common/file.h" + +namespace Audio { + +/** A player for the Infogrames/RobHubbard2 format */ +class Infogrames : public Paula { +public: + class Instruments { + public: + Instruments(); + template Instruments(T ins) { + init(); + bool result = load(ins); + assert(result); + } + ~Instruments(); + + bool load(Common::SeekableReadStream &ins); + bool load(const char *ins) { + Common::File f; + + if (f.open(ins)) + return load(f); + return false; + } + void unload(void); + + uint8 getCount(void) const { return _count; } + + protected: + struct Sample { + int8 *data; + int8 *dataRepeat; + uint32 length; + uint32 lengthRepeat; + } _samples[32]; + + uint8 _count; + int8 *_sampleData; + + void init(); + + friend class Infogrames; + }; + + Infogrames(Instruments &ins, bool stereo = false, int rate = 44100); + ~Infogrames(); + + Instruments *getInstruments(void) const { return _instruments; } + bool getRepeating(void) const { return _repCount != 0; } + void setRepeating (int32 repCount) { _repCount = repCount; } + virtual void startPlay(void) { _playing = true;} + virtual void stopPlay(void) + { + _mutex.lock(); + _playing = false; + _mutex.unlock(); + } + virtual void pausePlay(bool pause) { _playing = !pause; } + + bool load(Common::SeekableReadStream &dum); + bool load(const char *dum) { + Common::File f; + + if (f.open(dum)) + return load(f); + return false; + } + void unload(void); + void restart(void) { if (_data) { stopPlay(); init(); startPlay(); } } + +protected: + Instruments *_instruments; + + static const uint8 tickCount[]; + static const uint16 periods[]; + byte *_data; + int32 _repCount; + + byte *_subSong; + byte *_cmdBlocks; + byte *_volSlideBlocks; + byte *_periodSlideBlocks; + uint8 _speedCounter; + uint8 _speed; + + uint16 _volume; + int16 _period; + uint8 _sample; + + struct Slide { + byte *data; + int8 amount; + uint8 dataOffset; + int16 finetuneNeg; + int16 finetunePos; + uint8 curDelay1; + uint8 curDelay2; + uint8 flags; // 0: Apply finetune modifier, 2: Don't slide, 7: Continuous + }; + struct Channel { + byte *cmdBlockIndices; + byte *cmdBlocks; + byte *cmds; + uint8 ticks; + uint8 tickCount; + Slide volSlide; + Slide periodSlide; + int16 period; + int8 periodMod; + uint8 flags; // 0: Need init, 5: Loop cmdBlocks, 6: Ignore channel + } _chn[4]; + + void init(void); + void reset(void); + void getNextSample(Channel &chn); + int16 tune(Slide &slide, int16 start) const; + virtual void interrupt(void); +}; + +} // End of namespace Audio + +#endif diff --git a/sound/mods/paula.cpp b/sound/mods/paula.cpp new file mode 100644 index 0000000000..90d247096c --- /dev/null +++ b/sound/mods/paula.cpp @@ -0,0 +1,167 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2007 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#include "sound/mods/paula.h" + +namespace Audio { + +Paula::Paula(bool stereo, int rate, int interruptFreq) : + _stereo(stereo), _rate(rate), _intFreq(interruptFreq) { + _playing = false; + + clearVoices(); + _voice[0].panning = 63; + _voice[1].panning = 191; + _voice[2].panning = 191; + _voice[3].panning = 63; + + if (_intFreq <= 0) + _intFreq = _rate; + + _curInt = _intFreq; + _end = true; +} + +Paula::~Paula() { +} + +void Paula::clearVoice(byte voice) { + if (voice >= 4) + return; + + _voice[voice].data = 0; + _voice[voice].dataRepeat = 0; + _voice[voice].length = 0; + _voice[voice].lengthRepeat = 0; + _voice[voice].period = 0; + _voice[voice].volume = 0; + _voice[voice].offset = 0; +} + +int Paula::readBuffer(int16 *buffer, const int numSamples) { + int voice; + int samples; + int nSamples; + int sLen; + double frequency; + double rate; + double offset; + int16 *p; + int8 *data; + + _mutex.lock(); + + memset(buffer, 0, numSamples * 2); + if (!_playing) + { + _mutex.unlock(); + return numSamples; + } + + samples = _stereo ? numSamples / 2 : numSamples; + while (samples > 0) { + if (_curInt == _intFreq) { + interrupt(); + _curInt = 0; + } + nSamples = MIN(samples, _intFreq - _curInt); + for (voice = 0; voice < 4; voice++) { + if (!_voice[voice].data || (_voice[voice].period <= 0)) + continue; + + frequency = (7093789.2 / 2.0) / _voice[voice].period; + rate = frequency / _rate; + offset = _voice[voice].offset; + sLen = _voice[voice].length; + data = _voice[voice].data; + p = buffer; + + _voice[voice].volume &= 0x3F; + if ((_voice[voice].lengthRepeat > 2) && + ((int)(offset + nSamples * rate) >= sLen)) { + int neededSamples = nSamples; + + int end = (int)((sLen - offset) / rate); + + for (int i = 0; i < end; i++) + mix(p, data[(int)(offset + rate * i)], voice); + + _voice[voice].length = sLen = _voice[voice].lengthRepeat; + _voice[voice].data = data = _voice[voice].dataRepeat; + _voice[voice].offset = offset = 0; + neededSamples -= end; + + while (neededSamples > 0) { + if (neededSamples >= (int) ((sLen - offset) / rate)) { + end = (int)((sLen - offset) / rate); + + for (int i = 0; i < end; i++) + mix(p, data[(int)(offset + rate * i)], voice); + + _voice[voice].data = data = _voice[voice].dataRepeat; + _voice[voice].length = sLen = + _voice[voice].lengthRepeat; + _voice[voice].offset = offset = 0; + + neededSamples -= end; + } else { + for (int i = 0; i < neededSamples; i++) + mix(p, data[(int)(offset + rate * i)], voice); + _voice[voice].offset += rate * neededSamples; + if (ceil(_voice[voice].offset) >= sLen) { + _voice[voice].data = data = _voice[voice].dataRepeat; + _voice[voice].length = sLen = + _voice[voice].lengthRepeat; + _voice[voice].offset = offset = 0; + } + neededSamples = 0; + } + } + } else { + if (offset < sLen) { + if ((int)(offset + nSamples * rate) >= sLen) { + // The end of the sample is the limiting factor + + int end = (int)((sLen - offset) / rate); + for (int i = 0; i < end; i++) + mix(p, data[(int)(offset + rate * i)], voice); + _voice[voice].offset = sLen; + } else { + // The requested number of samples is the limiting + // factor, not the sample + + for (int i = 0; i < nSamples; i++) + mix(p, data[(int)(offset + rate * i)], voice); + _voice[voice].offset += rate * nSamples; + } + } + } + } + buffer += _stereo ? nSamples * 2 : nSamples; + _curInt += nSamples; + samples -= nSamples; + } + _mutex.unlock(); + return numSamples; +} + +} // End of namespace Audio diff --git a/sound/mods/paula.h b/sound/mods/paula.h new file mode 100644 index 0000000000..be85122635 --- /dev/null +++ b/sound/mods/paula.h @@ -0,0 +1,94 @@ +/* ScummVM - Scumm Interpreter + * Copyright (C) 2007 The ScummVM project + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + */ + +#ifndef SOUND_MODS_PAULA_H +#define SOUND_MODS_PAULA_H + +#include "sound/audiostream.h" +#include "common/mutex.h" + +namespace Audio { + +/** + * Emulation of the "Paula" Amiga music chip + * The interrupt frequency specifies the number of mixed wavesamples between + * calls of the interrupt method + */ +class Paula : public AudioStream { +public: + Paula(bool stereo = false, int rate = 44100, int interruptFreq = 0); + ~Paula(); + + bool playing() const { return _playing; } + void setInterruptFreq(int freq) { _intFreq = freq; } + void setPanning(byte voice, byte panning) + { + if (voice < 4) + _voice[voice].panning = panning; + } + void clearVoice(byte voice); + void clearVoices() { int i; for (i = 0; i < 4; i++) clearVoice(i); } + virtual void startPlay(void) {} + virtual void stopPlay(void) {} + virtual void pausePlay(bool pause) {} + +// AudioStream API + int readBuffer(int16 *buffer, const int numSamples); + bool isStereo() const { return _stereo; } + bool endOfData() const { return _end; } + int getRate() const { return _rate; } + +protected: + struct Channel { + int8 *data; + int8 *dataRepeat; + uint32 length; + uint32 lengthRepeat; + int16 period; + byte volume; + double offset; + byte panning; // For stereo mixing: 0 = far left, 255 = far right + } _voice[4]; + + int _rate; + int _intFreq; + int _curInt; + bool _stereo; + bool _end; + bool _playing; + Common::Mutex _mutex; + + void mix(int16 *&buf, int8 data, int voice) { + if (_stereo) { + *buf++ += (((int32) data) * _voice[voice].volume * + (255 - _voice[voice].panning)) >> 7; + *buf++ += (((int32) data) * _voice[voice].volume * + (_voice[voice].panning)) >> 7; + } else + *buf++ += _voice[voice].volume * data; + } + virtual void interrupt(void) {}; +}; + +} // End of namespace Audio + +#endif diff --git a/sound/module.mk b/sound/module.mk index af299a3357..fc98c5f7f3 100644 --- a/sound/module.mk +++ b/sound/module.mk @@ -20,6 +20,8 @@ MODULE_OBJS := \ wave.o \ mods/module.o \ mods/protracker.o \ + mods/paula.o \ + mods/infogrames.o \ softsynth/adlib.o \ softsynth/ym2612.o \ softsynth/fluidsynth.o \ -- cgit v1.2.3