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Diffstat (limited to 'engines/kyra/sound_amiga.cpp')
| -rw-r--r-- | engines/kyra/sound_amiga.cpp | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/engines/kyra/sound_amiga.cpp b/engines/kyra/sound_amiga.cpp new file mode 100644 index 0000000000..17e27ccc32 --- /dev/null +++ b/engines/kyra/sound_amiga.cpp @@ -0,0 +1,234 @@ +/* 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/system.h" +#include "common/mutex.h" +#include "kyra/resource.h" +#include "kyra/sound_intern.h" + +#include "sound/mixer.h" +#include "sound/mods/maxtrax.h" +#include "sound/audiostream.h" + +namespace { + +FORCEINLINE uint8 sfxTableGetNote(const byte* address) { + return (uint8)address[0]; +} +FORCEINLINE uint8 sfxTableGetPatch(const byte* address) { + return (uint8)address[1]; +} +FORCEINLINE uint16 sfxTableGetDuration(const byte* address) { + return READ_BE_UINT16(&address[4]); +} +FORCEINLINE int8 sfxTableGetVolume(const byte* address) { + return (int8)address[6]; +} +FORCEINLINE int8 sfxTableGetPan(const byte* address) { + return (int8)address[7]; +} + +} // end of namespace + +namespace Kyra { + +SoundAmiga::SoundAmiga(KyraEngine_v1 *vm, Audio::Mixer *mixer) + : Sound(vm, mixer), + _driver(0), + _musicHandle(), + _fileLoaded(kFileNone), + _tableSfxIntro(), + _tableSfxGame() { +} + +SoundAmiga::~SoundAmiga() { + _mixer->stopHandle(_musicHandle); + delete _driver; +} + +extern const byte LoKAmigaSfxIntro[]; +extern const byte LoKAmigaSfxGame[]; + +bool SoundAmiga::init() { + _driver = new Audio::MaxTrax(_mixer->getOutputRate(), true); + _tableSfxIntro = LoKAmigaSfxIntro; + _tableSfxGame = LoKAmigaSfxGame; + + return _driver != 0 && _tableSfxIntro && _tableSfxGame; +} + +void SoundAmiga::loadSoundFile(uint file) { + static const char *const tableFilenames[3][2] = { + { "introscr.mx", "introinst.mx" }, + { "kyramusic.mx", 0 }, + { "finalescr.mx", "introinst.mx" } + }; + assert(file < ARRAYSIZE(tableFilenames)); + if (_fileLoaded == (FileType)file) + return; + const char* scoreName = tableFilenames[file][0]; + const char* sampleName = tableFilenames[file][1]; + bool loaded = false; + + Common::SeekableReadStream *scoreIn = _vm->resource()->createReadStream(scoreName); + if (sampleName) { + Common::SeekableReadStream *sampleIn = _vm->resource()->createReadStream(sampleName); + if (scoreIn && sampleIn) { + _fileLoaded = kFileNone; + loaded = _driver->load(*scoreIn, true, false); + loaded = loaded && _driver->load(*sampleIn, false, true); + } else + warning("SoundAmiga: missing atleast one of those music files: %s, %s", scoreName, sampleName); + delete sampleIn; + } else { + if (scoreIn) { + _fileLoaded = kFileNone; + loaded = _driver->load(*scoreIn); + } else + warning("SoundAmiga: missing music file: %s", scoreName); + } + delete scoreIn; + + if (loaded) + _fileLoaded = (FileType)file; +} + +void SoundAmiga::playTrack(uint8 track) { + static const byte tempoIntro[6] = { 0x46, 0x55, 0x3C, 0x41, 0x78, 0x50 }; + static const byte tempoIngame[23] = { + 0x64, 0x64, 0x64, 0x64, 0x64, 0x73, 0x4B, 0x64, + 0x64, 0x64, 0x55, 0x9C, 0x6E, 0x91, 0x78, 0x84, + 0x32, 0x64, 0x64, 0x6E, 0x3C, 0xD8, 0xAF + }; + static const byte loopIngame[23] = { + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x01, 0x01, + 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00 + }; + + int score = -1; + bool loop = false; + byte volume = 0x40; + byte tempo = 0; + + + switch (_fileLoaded) { + case kFileFinal: + // score 0 gets started immediately after loading the music-files with different tempo. + // we need to define a track-value for the fake call of this function + if (track == 10) { + score = 0; + loop = true; + tempo = 0x78; + break; + } + // if this is not the hardcoded start of the song then + // Fallthrough + case kFileIntro: + if (track >= 2 && track < ARRAYSIZE(tempoIntro) + 2) { + score = track - 2; + tempo = tempoIntro[score]; + } + break; + + case kFileGame: + if (track >= 11 && track < ARRAYSIZE(tempoIngame) + 11) { + score = track - 11; + loop = loopIngame[score] != 0; + tempo = tempoIngame[score]; + } + break; + + default: + return; + } + + if (score >= 0) { + if (_driver->playSong(score, loop)) { + _driver->setVolume(volume); + _driver->setTempo(tempo << 4); + if (!_mixer->isSoundHandleActive(_musicHandle)) + _mixer->playInputStream(Audio::Mixer::kPlainSoundType, &_musicHandle, _driver, -1, Audio::Mixer::kMaxChannelVolume, 0, false); + } + } else if (track == 0) + _driver->stopMusic(); + else if (track == 1) + beginFadeOut(); +} + +void SoundAmiga::haltTrack() { + _driver->stopMusic(); +} + +void SoundAmiga::beginFadeOut() { + for (int i = 0x3F; i >= 0; --i) { + _driver->setVolume((byte)i); + _vm->delay(_vm->tickLength()); + } + + _driver->stopMusic(); + _vm->delay(_vm->tickLength()); + _driver->setVolume(0x40); +} + +void SoundAmiga::playSoundEffect(uint8 track) { + debug("play sfx %d", track); + const byte* tableEntry = 0; + bool pan = false; + + switch (_fileLoaded) { + case kFileFinal: + case kFileIntro: + assert(track < 40); + + tableEntry = &_tableSfxIntro[track * 8]; + pan = (sfxTableGetPan(tableEntry) != 0); + break; + + case kFileGame: + // 0x61 <= track && track <= 0x63 && variable(0x1BFE2) which might indicate song playing in game and finale + if (0x61 <= track && track <= 0x63) + playTrack(track - 0x4F); + + assert(track < 120); + // variable(0x1BFE4) && tableEffectsGame[track].note, which gets set for ingame and unset for finale + // (and some function reverses its state) + if (sfxTableGetNote(&_tableSfxGame[track * 8])) { + tableEntry = &_tableSfxGame[track * 8]; + pan = (sfxTableGetPan(tableEntry) != 0) && (sfxTableGetPan(tableEntry) != 2); + } + break; + default: + ; + } + + if (tableEntry) { + const bool success = _driver->playNote(sfxTableGetNote(tableEntry), sfxTableGetPatch(tableEntry), sfxTableGetDuration(tableEntry), sfxTableGetVolume(tableEntry), pan); + if (success && !_mixer->isSoundHandleActive(_musicHandle)) + _mixer->playInputStream(Audio::Mixer::kPlainSoundType, &_musicHandle, _driver, -1, Audio::Mixer::kMaxChannelVolume, 0, false); + } +} + +} // end of namespace Kyra |