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https://github.com/libretro/scummvm.git
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134 lines
3.6 KiB
C++
134 lines
3.6 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef DIRECTOR_SOUND_H
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#define DIRECTOR_SOUND_H
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#include "audio/mixer.h"
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namespace Audio {
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class AudioStream;
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class SoundHandle;
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class PCSpeaker;
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class RewindableAudioStream;
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}
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namespace Director {
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struct FadeParams {
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int startVol;
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int targetVol;
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int totalTicks;
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int startTicks;
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int lapsedTicks;
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bool fadeIn;
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FadeParams(int sv, int tv, int tt, int st, bool f) :
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startVol(sv), targetVol(tv), totalTicks(tt), startTicks(st), lapsedTicks(0), fadeIn(f) {}
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};
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struct SoundChannel {
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Audio::SoundHandle handle;
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int lastPlayingCast;
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byte volume;
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FadeParams *fade;
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SoundChannel(): handle(), lastPlayingCast(0), volume(255), fade(nullptr) {}
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};
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class DirectorSound {
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private:
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DirectorEngine *_vm;
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Common::Array<SoundChannel> _channels;
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Audio::SoundHandle *_scriptSound;
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Audio::Mixer *_mixer;
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Audio::PCSpeaker *_speaker;
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Audio::SoundHandle *_pcSpeakerHandle;
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public:
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DirectorSound(DirectorEngine *vm);
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~DirectorSound();
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SoundChannel *getChannel(uint8 soundChannel);
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void playFile(Common::String filename, uint8 soundChannel);
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void playMCI(Audio::AudioStream &stream, uint32 from, uint32 to);
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void playStream(Audio::AudioStream &stream, uint8 soundChannel);
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void playCastMember(int castId, uint8 soundChannel, bool allowRepeat = true);
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void systemBeep();
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void registerFade(uint8 soundChannel, bool fadeIn, int ticks);
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bool fadeChannel(uint8 soundChannel);
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bool isChannelActive(uint8 soundChannel);
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int lastPlayingCast(uint8 soundChannel);
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void stopSound(uint8 soundChannel);
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void stopSound();
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private:
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bool isChannelValid(uint8 soundChannel);
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void cancelFade(uint8 soundChannel);
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};
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class AudioDecoder {
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public:
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virtual ~AudioDecoder() {};
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public:
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virtual Audio::RewindableAudioStream *getAudioStream(DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES) = 0;
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virtual Audio::AudioStream *getLoopingAudioStream();
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};
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class SNDDecoder : public AudioDecoder {
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public:
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SNDDecoder();
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~SNDDecoder();
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bool loadStream(Common::SeekableReadStreamEndian &stream);
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bool processCommands(Common::SeekableReadStreamEndian &stream);
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bool processBufferCommand(Common::SeekableReadStreamEndian &stream);
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Audio::RewindableAudioStream *getAudioStream(DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES);
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private:
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byte *_data;
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uint16 _channels;
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uint32 _size;
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uint16 _rate;
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byte _flags;
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};
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class AudioFileDecoder: public AudioDecoder {
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public:
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AudioFileDecoder(Common::String &path): _path(path) {};
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~AudioFileDecoder() {};
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void setPath(Common::String &path);
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Audio::RewindableAudioStream *getAudioStream(DisposeAfterUse::Flag disposeAfterUse = DisposeAfterUse::YES);
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private:
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Common::String _path;
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};
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} // End of namespace Director
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#endif
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