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Diffstat (limited to 'engines/hugo/sound.cpp')
| -rw-r--r-- | engines/hugo/sound.cpp | 331 |
1 files changed, 331 insertions, 0 deletions
diff --git a/engines/hugo/sound.cpp b/engines/hugo/sound.cpp new file mode 100644 index 0000000000..e5f55afcc8 --- /dev/null +++ b/engines/hugo/sound.cpp @@ -0,0 +1,331 @@ +/* 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. + * + * $URL$ + * $Id$ + * + */ + +/* + * This code is based on original Hugo Trilogy source code + * + * Copyright (c) 1989-1995 David P. Gray + * + */ + +/* sound.c - sound effects and music support */ + +#include "common/system.h" + +#include "sound/decoders/raw.h" +#include "sound/audiostream.h" +#include "sound/midiparser.h" +#include "sound/mididrv.h" + +#include "hugo/hugo.h" +#include "hugo/game.h" +#include "hugo/file.h" +#include "hugo/sound.h" + +namespace Hugo { + +class MidiPlayer : public MidiDriver { +public: + + enum { + NUM_CHANNELS = 16 + }; + + MidiPlayer(MidiDriver *driver); + ~MidiPlayer(); + + void play(uint8 *stream, uint16 size); + void stop(); + void pause(bool p); + void updateTimer(); + void adjustVolume(int diff); + void setVolume(int volume); + int getVolume() const { return _masterVolume; } + void setLooping(bool loop) { _isLooping = loop; } + + // MidiDriver interface + int open(); + void close(); + void send(uint32 b); + void metaEvent(byte type, byte *data, uint16 length); + void setTimerCallback(void *timerParam, void (*timerProc)(void *)) { } + uint32 getBaseTempo() { return _driver ? _driver->getBaseTempo() : 0; } + MidiChannel *allocateChannel() { return 0; } + MidiChannel *getPercussionChannel() { return 0; } + +private: + + static void timerCallback(void *p); + + MidiDriver *_driver; + MidiParser *_parser; + uint8 *_midiData; + bool _isLooping; + bool _isPlaying; + bool _paused; + int _masterVolume; + MidiChannel *_channelsTable[NUM_CHANNELS]; + uint8 _channelsVolume[NUM_CHANNELS]; + Common::Mutex _mutex; +}; + +MidiPlayer::MidiPlayer(MidiDriver *driver) + : _driver(driver), _parser(0), _midiData(0), _isLooping(false), _isPlaying(false), _paused(false), _masterVolume(0) { + assert(_driver); + memset(_channelsTable, 0, sizeof(_channelsTable)); + for (int i = 0; i < NUM_CHANNELS; i++) { + _channelsVolume[i] = 127; + } +} + +MidiPlayer::~MidiPlayer() { + close(); +} + +void MidiPlayer::play(uint8 *stream, uint16 size) { + if (!stream) { + stop(); + return; + } + + _midiData = (uint8 *)malloc(size); + if (_midiData) { + memcpy(_midiData, stream, size); + _mutex.lock(); + _parser->loadMusic(_midiData, size); + _parser->setTrack(0); + _isLooping = true; + _isPlaying = true; + _mutex.unlock(); + } +} + +void MidiPlayer::stop() { + _mutex.lock(); + if (_isPlaying) { + _isPlaying = false; + _parser->unloadMusic(); + free(_midiData); + _midiData = 0; + } + _mutex.unlock(); +} + +void MidiPlayer::pause(bool p) { + _paused = p; + + for (int i = 0; i < NUM_CHANNELS; ++i) { + if (_channelsTable[i]) { + _channelsTable[i]->volume(_paused ? 0 : _channelsVolume[i] * _masterVolume / 255); + } + } +} + +void MidiPlayer::updateTimer() { + if (_paused) { + return; + } + + _mutex.lock(); + if (_isPlaying) { + _parser->onTimer(); + } + _mutex.unlock(); +} + +void MidiPlayer::adjustVolume(int diff) { + setVolume(_masterVolume + diff); +} + +void MidiPlayer::setVolume(int volume) { + _masterVolume = CLIP(volume, 0, 255); + _mutex.lock(); + for (int i = 0; i < NUM_CHANNELS; ++i) { + if (_channelsTable[i]) { + _channelsTable[i]->volume(_channelsVolume[i] * _masterVolume / 255); + } + } + _mutex.unlock(); +} + +int MidiPlayer::open() { + _driver->open(); + + _parser = MidiParser::createParser_SMF(); + _parser->setMidiDriver(this); + _parser->setTimerRate(_driver->getBaseTempo()); + _driver->setTimerCallback(this, &timerCallback); + + return 0; +} + +void MidiPlayer::close() { + stop(); + _mutex.lock(); + _driver->setTimerCallback(0, 0); + _driver->close(); + delete _driver; + _driver = 0; + _parser->setMidiDriver(0); + delete _parser; + _mutex.unlock(); +} + +void MidiPlayer::send(uint32 b) { + byte volume, ch = (byte)(b & 0xF); + switch (b & 0xFFF0) { + case 0x07B0: // volume change + volume = (byte)((b >> 16) & 0x7F); + _channelsVolume[ch] = volume; + volume = volume * _masterVolume / 255; + b = (b & 0xFF00FFFF) | (volume << 16); + break; + case 0x7BB0: // all notes off + if (!_channelsTable[ch]) { + // channel not yet allocated, no need to send the event + return; + } + break; + } + + if (!_channelsTable[ch]) { + _channelsTable[ch] = (ch == 9) ? _driver->getPercussionChannel() : _driver->allocateChannel(); + } + if (_channelsTable[ch]) { + _channelsTable[ch]->send(b); + } +} + +void MidiPlayer::metaEvent(byte type, byte *data, uint16 length) { + switch (type) { + case 0x2F: // end of Track + if (_isLooping) { + _parser->jumpToTick(0); + } else { + stop(); + } + break; + default: +// warning("Unhandled meta event: %02x", type); + break; + } +} + +void MidiPlayer::timerCallback(void *p) { + MidiPlayer *player = (MidiPlayer *)p; + + player->updateTimer(); +} + +SoundHandler::SoundHandler(HugoEngine &vm) : _vm(vm) { + MidiDriver::DeviceHandle dev = MidiDriver::detectDevice(MDT_MIDI | MDT_ADLIB | MDT_PREFER_GM); + MidiDriver *driver = MidiDriver::createMidi(dev); + + _midiPlayer = new MidiPlayer(driver); +} + +void SoundHandler::setMusicVolume() { + /* Set the FM music volume from config.mvolume (0..100%) */ + + _midiPlayer->setVolume(_config.musicVolume * 255 / 100); +} + +void SoundHandler::stopSound() { + /* Stop any sound that might be playing */ + _vm._mixer->stopAll(); +} + +void SoundHandler::stopMusic() { + /* Stop any tune that might be playing */ + _midiPlayer->stop(); +} + +void SoundHandler::toggleMusic() { +// Turn music on and off + _config.musicFl = !_config.musicFl; + + _midiPlayer->pause(_config.musicFl); +} + +void SoundHandler::toggleSound() { +// Turn digitized sound on and off + _config.soundFl = !_config.soundFl; +} + +void SoundHandler::playMIDI(sound_pt seq_p, uint16 size) { + _midiPlayer->play(seq_p, size); +} + + +void SoundHandler::playMusic(int16 tune) { + /* Read a tune sequence from the sound database and start playing it */ + sound_pt seqPtr; // Sequence data from file + uint16 size; // Size of sequence data + + if (_config.musicFl) { + _vm.getGameStatus().song = tune; + seqPtr = _vm.file().getSound(tune, &size); + playMIDI(seqPtr, size); + } +} + + +void SoundHandler::playSound(int16 sound, stereo_t channel, byte priority) { + /* Produce various sound effects on supplied stereo channel(s) */ + /* Override currently playing sound only if lower or same priority */ + + // uint32 dwVolume; // Left, right volume of sound + sound_pt sound_p; // Sound data + uint16 size; // Size of data + static byte curPriority = 0; // Priority of currently playing sound + // + /* Sound disabled */ + if (!_config.soundFl || !_vm._mixer->isReady()) + return; + // + // // See if last wave still playing - if so, check priority + // if (waveOutUnprepareHeader(hwav, lphdr, sizeof(WAVEHDR)) == WAVERR_STILLPLAYING) + // if (priority < curPriority) // Don't override unless priority >= current + // return; + // else + // Stop_sound(); + curPriority = priority; + // + /* Get sound data */ + if ((sound_p = _vm.file().getSound(sound, &size)) == 0) + return; + + Audio::AudioStream *stream = Audio::makeRawStream(sound_p, size, 11025, Audio::FLAG_UNSIGNED); + _vm._mixer->playStream(Audio::Mixer::kSpeechSoundType, &_soundHandle, stream); + +} + +void SoundHandler::initSound() { + /* Initialize for MCI sound and midi */ + + _midiPlayer->open(); +} + +} // End of namespace Hugo |