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authorJohannes Schickel2010-10-13 03:57:44 +0000
committerJohannes Schickel2010-10-13 03:57:44 +0000
commit75e8452b6e6a2bf4fb2f588aa00b428a60d873b5 (patch)
treef29541d55309487a94bd1d38e8b53bb3dde9aec6 /engines/hugo/sound.cpp
parent48ee83b88957dab86bc763e9ef21a70179fa8679 (diff)
parente9f50882ea5b6beeefa994040be9d3bab6a1f107 (diff)
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OPENGL: Merged from trunk, from rev 52105 to 53396.
This includes an rather hacky attempt to merge all the recent gp2x backend changes into the branch. I suppose the gp2x backend and probably all new backends, i.e. gph, dingux etc., might not compile anymore. Since I have no way of testing those it would be nice if porters could look into getting those up to speed in this branch. svn-id: r53399
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diff --git a/engines/hugo/sound.cpp b/engines/hugo/sound.cpp
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+/* 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