mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-29 21:24:53 +00:00
484 lines
10 KiB
C++
484 lines
10 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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 "common/file.h"
|
|
#include "common/stdafx.h"
|
|
#include "common/endian.h"
|
|
|
|
#include "gob/gob.h"
|
|
#include "gob/music.h"
|
|
#include "gob/game.h"
|
|
#include "gob/util.h"
|
|
|
|
namespace Gob {
|
|
|
|
const char *Adlib::_tracks[][2] = {
|
|
{"avt00.tot", "mine"},
|
|
{"avt001.tot", "nuit"},
|
|
{"avt002.tot", "campagne"},
|
|
{"avt003.tot", "extsor1"},
|
|
{"avt004.tot", "interieure"},
|
|
{"avt005.tot", "zombie"},
|
|
{"avt006.tot", "zombie"},
|
|
{"avt007.tot", "campagne"},
|
|
{"avt008.tot", "campagne"},
|
|
{"avt009.tot", "extsor1"},
|
|
{"avt010.tot", "extsor1"},
|
|
{"avt011.tot", "interieure"},
|
|
{"avt012.tot", "zombie"},
|
|
{"avt014.tot", "nuit"},
|
|
{"avt015.tot", "interieure"},
|
|
{"avt016.tot", "statue"},
|
|
{"avt017.tot", "zombie"},
|
|
{"avt018.tot", "statue"},
|
|
{"avt019.tot", "mine"},
|
|
{"avt020.tot", "statue"},
|
|
{"avt021.tot", "mine"},
|
|
{"avt022.tot", "zombie"}
|
|
};
|
|
|
|
const char *Adlib::_trackFiles[] = {
|
|
// "musmac1.adl", // TODO: This track isn't played correctly at all yet
|
|
"musmac2.adl",
|
|
"musmac3.adl",
|
|
"musmac4.adl",
|
|
"musmac5.adl",
|
|
"musmac6.adl"
|
|
};
|
|
|
|
const unsigned char Adlib::_operators[] = {0, 1, 2, 8, 9, 10, 16, 17, 18};
|
|
const unsigned char Adlib::_volRegNums[] = {
|
|
3, 4, 5,
|
|
11, 12, 13,
|
|
19, 20, 21
|
|
};
|
|
|
|
Adlib::Adlib(GobEngine *vm) : _vm(vm) {
|
|
int i;
|
|
|
|
_index = -1;
|
|
_data = 0;
|
|
_playPos = 0;
|
|
_dataSize = 0;
|
|
_rate = _vm->_mixer->getOutputRate();
|
|
_opl = makeAdlibOPL(_rate);
|
|
_first = true;
|
|
_ended = false;
|
|
_playing = false;
|
|
_needFree = false;
|
|
_repCount = -1;
|
|
_samplesTillPoll = 0;
|
|
|
|
for (i = 0; i < 16; i ++)
|
|
_pollNotes[i] = 0;
|
|
setFreqs();
|
|
|
|
_vm->_mixer->playInputStream(Audio::Mixer::kMusicSoundType, &_handle,
|
|
this, -1, 255, 0, false, true);
|
|
}
|
|
|
|
Adlib::~Adlib() {
|
|
Common::StackLock slock(_mutex);
|
|
|
|
_vm->_mixer->stopHandle(_handle);
|
|
OPLDestroy(_opl);
|
|
if (_data && _needFree)
|
|
delete[] _data;
|
|
}
|
|
|
|
int Adlib::readBuffer(int16 *buffer, const int numSamples) {
|
|
Common::StackLock slock(_mutex);
|
|
int samples;
|
|
int render;
|
|
|
|
if (!_playing || (numSamples < 0)) {
|
|
memset(buffer, 0, numSamples * sizeof(int16));
|
|
return numSamples;
|
|
}
|
|
if (_first) {
|
|
memset(buffer, 0, numSamples * sizeof(int16));
|
|
pollMusic();
|
|
return numSamples;
|
|
}
|
|
|
|
samples = numSamples;
|
|
while (samples && _playing) {
|
|
if (_samplesTillPoll) {
|
|
render = (samples > _samplesTillPoll) ? (_samplesTillPoll) : (samples);
|
|
samples -= render;
|
|
_samplesTillPoll -= render;
|
|
YM3812UpdateOne(_opl, buffer, render);
|
|
buffer += render;
|
|
} else {
|
|
pollMusic();
|
|
if (_ended) {
|
|
memset(buffer, 0, samples * sizeof(int16));
|
|
samples = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_ended) {
|
|
_first = true;
|
|
_ended = false;
|
|
_playPos = _data + 3 + (_data[1] + 1) * 0x38;
|
|
_samplesTillPoll = 0;
|
|
if (_repCount == -1) {
|
|
reset();
|
|
setVoices();
|
|
} else if (_repCount > 0) {
|
|
_repCount--;
|
|
reset();
|
|
setVoices();
|
|
}
|
|
else
|
|
_playing = false;
|
|
}
|
|
|
|
return numSamples;
|
|
}
|
|
|
|
void Adlib::writeOPL(byte reg, byte val) {
|
|
debugC(6, kDebugMusic, "writeOPL(%02X, %02X)", reg, val);
|
|
OPLWriteReg(_opl, reg, val);
|
|
}
|
|
|
|
void Adlib::setFreqs() {
|
|
byte lin;
|
|
byte col;
|
|
long val = 0;
|
|
|
|
// Run through the 11 channels
|
|
for (lin = 0; lin < 11; lin ++) {
|
|
_notes[lin] = 0;
|
|
_notCol[lin] = 0;
|
|
_notLin[lin] = 0;
|
|
_notOn[lin] = false;
|
|
}
|
|
|
|
// Run through the 25 lines
|
|
for (lin = 0; lin < 25; lin ++) {
|
|
// Run through the 12 columns
|
|
for (col = 0; col < 12; col ++) {
|
|
if (!col)
|
|
val = (((0x2710L + lin * 0x18) * 0xCB78 / 0x3D090) << 0xE) *
|
|
9 / 0x1B503;
|
|
_freqs[lin][col] = (short)((val + 4) >> 3);
|
|
val = val * 0x6A / 0x64;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Adlib::reset() {
|
|
_first = true;
|
|
OPLResetChip(_opl);
|
|
_samplesTillPoll = 0;
|
|
|
|
setFreqs();
|
|
// Set frequencies and octave to 0; notes off
|
|
for (int i = 0; i < 9; i++) {
|
|
writeOPL(0xA0 | i, 0);
|
|
writeOPL(0xB0 | i, 0);
|
|
writeOPL(0xE0 | _operators[i] , 0);
|
|
writeOPL(0xE0 | _operators[i] + 3, 0);
|
|
}
|
|
|
|
// Authorize the control of the waveformes
|
|
writeOPL(0x01, 0x20);
|
|
}
|
|
|
|
void Adlib::setVoices() {
|
|
// Definitions of the 9 instruments
|
|
for (int i = 0; i < 9; i++)
|
|
setVoice(i, i, true);
|
|
}
|
|
|
|
void Adlib::setVoice(byte voice, byte instr, bool set) {
|
|
int i;
|
|
int j;
|
|
uint16 strct[27];
|
|
byte channel;
|
|
byte *dataPtr;
|
|
|
|
// i = 0 : 0 1 2 3 4 5 6 7 8 9 10 11 12 26
|
|
// i = 1 : 13 14 15 16 17 18 19 20 21 22 23 24 25 27
|
|
for (i = 0; i < 2; i++) {
|
|
dataPtr = _data + 3 + instr * 0x38 + i * 0x1A;
|
|
for (j = 0; j < 27; j++) {
|
|
strct[j] = READ_LE_UINT16(dataPtr);
|
|
dataPtr += 2;
|
|
}
|
|
channel = _operators[voice] + i * 3;
|
|
writeOPL(0xBD, 0x00);
|
|
writeOPL(0x08, 0x00);
|
|
writeOPL(0x40 | channel, ((strct[0] & 3) << 6) | (strct[8] & 0x3F));
|
|
if (!i)
|
|
writeOPL(0xC0 | voice,
|
|
((strct[2] & 7) << 1) | (1 - (strct[12] & 1)));
|
|
writeOPL(0x60 | channel, ((strct[3] & 0xF) << 4) | (strct[6] & 0xF));
|
|
writeOPL(0x80 | channel, ((strct[4] & 0xF) << 4) | (strct[7] & 0xF));
|
|
writeOPL(0x20 | channel, ((strct[9] & 1) << 7) |
|
|
((strct[10] & 1) << 6) | ((strct[5] & 1) << 5) |
|
|
((strct[11] & 1) << 4) | (strct[1] & 0xF));
|
|
if (!i)
|
|
writeOPL(0xE0 | channel, (strct[26] & 3));
|
|
else
|
|
writeOPL(0xE0 | channel, (strct[14] & 3));
|
|
if (i && set)
|
|
writeOPL(0x40 | channel, 0);
|
|
}
|
|
}
|
|
|
|
void Adlib::setKey(byte voice, byte note, bool on, bool spec) {
|
|
short freq = 0;
|
|
short octa = 0;
|
|
|
|
// Instruction AX
|
|
if (spec) {
|
|
// 0x7F donne 0x16B;
|
|
// 7F
|
|
// << 7 = 3F80
|
|
// + E000 = 11F80
|
|
// & FFFF = 1F80
|
|
// * 19 = 31380
|
|
// / 2000 = 18 => Ligne 18h, colonne 0 => freq 16B
|
|
|
|
// 0x3A donne 0x2AF;
|
|
// 3A
|
|
// << 7 = 1D00
|
|
// + E000 = FD00 negatif
|
|
// * 19 = xB500
|
|
// / 2000 = -2 => Ligne 17h, colonne -1
|
|
|
|
// 2E
|
|
// << 7 = 1700
|
|
// + E000 = F700 negatif
|
|
// * 19 = x1F00
|
|
// / 2000 =
|
|
short a;
|
|
short lin;
|
|
short col;
|
|
|
|
a = (note << 7) + 0xE000; // Volontairement tronque
|
|
a = (short)((long)a * 25 / 0x2000);
|
|
if (a < 0) {
|
|
col = - ((24 - a) / 25);
|
|
lin = (-a % 25);
|
|
if (lin)
|
|
lin = 25 - lin;
|
|
}
|
|
else {
|
|
col = a / 25;
|
|
lin = a % 25;
|
|
}
|
|
|
|
_notCol[voice] = col;
|
|
_notLin[voice] = lin;
|
|
note = _notes[voice];
|
|
}
|
|
// Instructions 0X 9X 8X
|
|
else {
|
|
note -= 12;
|
|
_notOn[voice] = on;
|
|
}
|
|
|
|
_notes[voice] = note;
|
|
note += _notCol[voice];
|
|
note = MIN((byte) 0x5F, note);
|
|
octa = note / 12;
|
|
freq = _freqs[_notLin[voice]][note - octa * 12];
|
|
|
|
writeOPL(0xA0 + voice, freq & 0xFF);
|
|
writeOPL(0xB0 + voice, (freq >> 8) | (octa << 2) | 0x20 * on);
|
|
|
|
if (!freq)
|
|
warning("Voice %d, note %02X unknown\n", voice, note);
|
|
}
|
|
|
|
void Adlib::setVolume(byte voice, byte volume) {
|
|
volume = 0x3F - (volume * 0x7E + 0x7F) / 0xFE;
|
|
writeOPL(0x40 + _volRegNums[voice], volume);
|
|
}
|
|
|
|
void Adlib::pollMusic() {
|
|
unsigned char instr;
|
|
byte channel;
|
|
byte note;
|
|
byte volume;
|
|
uint16 tempo;
|
|
|
|
if ((_playPos > (_data + _dataSize)) && (_dataSize != 0xFFFFFFFF)) {
|
|
_ended = true;
|
|
return;
|
|
}
|
|
|
|
// First tempo, we'll ignore it...
|
|
if (_first) {
|
|
tempo = *(_playPos++);
|
|
// Tempo on 2 bytes
|
|
if (tempo & 0x80)
|
|
tempo = ((tempo & 3) << 8) | *(_playPos++);
|
|
}
|
|
_first = false;
|
|
|
|
// Instruction
|
|
instr = *(_playPos++);
|
|
channel = instr & 0x0F;
|
|
|
|
switch (instr & 0xF0) {
|
|
// Note on + Volume
|
|
case 0x00:
|
|
note = *(_playPos++);
|
|
_pollNotes[channel] = note;
|
|
setVolume(channel, *(_playPos++));
|
|
setKey(channel, note, true, false);
|
|
break;
|
|
// Note on
|
|
case 0x90:
|
|
note = *(_playPos++);
|
|
_pollNotes[channel] = note;
|
|
setKey(channel, note, true, false);
|
|
break;
|
|
// Last note off
|
|
case 0x80:
|
|
note = _pollNotes[channel];
|
|
setKey(channel, note, false, false);
|
|
break;
|
|
// Frequency on/off
|
|
case 0xA0:
|
|
note = *(_playPos++);
|
|
setKey(channel, note, _notOn[channel], true);
|
|
break;
|
|
// Volume
|
|
case 0xB0:
|
|
volume = *(_playPos++);
|
|
setVolume(channel, volume);
|
|
break;
|
|
// Program change
|
|
case 0xC0:
|
|
setVoice(channel, *(_playPos++), false);
|
|
break;
|
|
// Special
|
|
case 0xF0:
|
|
switch (instr & 0x0F) {
|
|
case 0xF: // End instruction
|
|
_ended = true;
|
|
_samplesTillPoll = 0;
|
|
return;
|
|
default:
|
|
warning("Unknown special command in ADL, stopping playback: %X",
|
|
instr & 0x0F);
|
|
_repCount = 0;
|
|
_ended = true;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
warning("Unknown command in ADL, stopping playback: %X",
|
|
instr & 0xF0);
|
|
_repCount = 0;
|
|
_ended = true;
|
|
break;
|
|
}
|
|
|
|
// Temporization
|
|
tempo = *(_playPos++);
|
|
// End tempo
|
|
if (tempo == 0xFF) {
|
|
_ended = true;
|
|
return;
|
|
}
|
|
// Tempo on 2 bytes
|
|
if (tempo & 0x80)
|
|
tempo = ((tempo & 3) << 8) | *(_playPos++);
|
|
if (!tempo)
|
|
tempo ++;
|
|
|
|
_samplesTillPoll = tempo * (_rate / 1000);
|
|
}
|
|
|
|
void Adlib::playBgMusic() {
|
|
for (int i = 0; i < ARRAYSIZE(_tracks); i++)
|
|
if (!scumm_stricmp(_vm->_game->_curTotFile, _tracks[i][0])) {
|
|
playTrack(_tracks[i][1]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
void Adlib::playTrack(const char *trackname) {
|
|
if (_playing) return;
|
|
|
|
debugC(1, kDebugMusic, "Adlib::playTrack(%s)", trackname);
|
|
unload();
|
|
load(_trackFiles[_vm->_util->getRandom(ARRAYSIZE(_trackFiles))]);
|
|
startPlay();
|
|
}
|
|
|
|
bool Adlib::load(const char *fileName) {
|
|
Common::File song;
|
|
|
|
unload();
|
|
song.open(fileName);
|
|
if (!song.isOpen())
|
|
return false;
|
|
|
|
_needFree = true;
|
|
_dataSize = song.size();
|
|
_data = new byte[_dataSize];
|
|
song.read(_data, _dataSize);
|
|
song.close();
|
|
|
|
reset();
|
|
setVoices();
|
|
_playPos = _data + 3 + (_data[1] + 1) * 0x38;
|
|
|
|
return true;
|
|
}
|
|
|
|
void Adlib::load(byte *data, uint32 size, int index) {
|
|
unload();
|
|
_repCount = 0;
|
|
|
|
_dataSize = size;
|
|
_data = data;
|
|
_index = index;
|
|
|
|
reset();
|
|
setVoices();
|
|
_playPos = _data + 3 + (_data[1] + 1) * 0x38;
|
|
}
|
|
|
|
void Adlib::unload() {
|
|
_playing = false;
|
|
_index = -1;
|
|
|
|
if (_data && _needFree)
|
|
delete[] _data;
|
|
|
|
_needFree = false;
|
|
}
|
|
|
|
} // End of namespace Gob
|