diff options
Diffstat (limited to 'engines/gob/music.cpp')
| -rw-r--r-- | engines/gob/music.cpp | 570 |
1 files changed, 0 insertions, 570 deletions
diff --git a/engines/gob/music.cpp b/engines/gob/music.cpp index 7c18d57a23..c56cac3764 100644 --- a/engines/gob/music.cpp +++ b/engines/gob/music.cpp @@ -32,576 +32,6 @@ namespace Gob { -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; -} - -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(); - } -} - const char *Adlib::_tracks[][2] = { {"avt00.tot", "mine"}, {"avt001.tot", "nuit"}, |