mirror of
https://github.com/libretro/scummvm.git
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129 lines
3.0 KiB
C++
129 lines
3.0 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 MOHAWK_SOUND_H
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#define MOHAWK_SOUND_H
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#include "common/array.h"
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#include "common/scummsys.h"
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#include "common/str.h"
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#include "common/stream.h"
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#include "audio/mixer.h"
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class MidiDriver;
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class MidiParser;
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namespace Audio {
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class RewindableAudioStream;
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}
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namespace Mohawk {
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#define MAX_CHANNELS 2 // Can there be more than 2?
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enum SndHandleType {
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kFreeHandle,
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kUsedHandle
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};
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struct SndHandle {
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Audio::SoundHandle handle;
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SndHandleType type;
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uint samplesPerSecond;
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uint16 id;
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};
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struct ADPCMStatus { // Holds ADPCM status data, but is irrelevant for us.
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uint32 size;
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uint16 itemCount;
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uint16 channels;
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struct StatusItem {
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uint32 sampleFrame;
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struct {
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int16 last;
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uint16 stepIndex;
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} channelStatus[MAX_CHANNELS];
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} *statusItems;
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};
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struct CueListPoint {
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uint32 sampleFrame;
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Common::String name;
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};
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struct CueList {
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uint32 size;
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uint16 pointCount;
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Common::Array<CueListPoint> points;
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};
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enum {
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kCodecRaw = 0,
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kCodecADPCM = 1,
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kCodecMPEG2 = 2
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};
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struct DataChunk {
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uint16 sampleRate;
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uint32 sampleCount;
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byte bitsPerSample;
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byte channels;
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uint16 encoding;
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uint16 loopCount; // 0 == no looping, 0xFFFF == infinite loop
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uint32 loopStart;
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uint32 loopEnd;
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Common::SeekableReadStream *audioData;
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};
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Audio::RewindableAudioStream *makeMohawkWaveStream(Common::SeekableReadStream *stream, CueList *cueList = nullptr);
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class MohawkEngine;
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class Sound {
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public:
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explicit Sound(MohawkEngine *vm);
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~Sound();
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// Generic sound functions
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Audio::SoundHandle *playSound(uint16 id, byte volume = Audio::Mixer::kMaxChannelVolume, bool loop = false, CueList *cueList = NULL);
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void stopSound();
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void stopSound(uint16 id);
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bool isPlaying(uint16 id);
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bool isPlaying();
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uint getNumSamplesPlayed(uint16 id);
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private:
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MohawkEngine *_vm;
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static Audio::RewindableAudioStream *makeLivingBooksWaveStream_v1(Common::SeekableReadStream *stream);
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Common::Array<SndHandle> _handles;
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SndHandle *getHandle();
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Audio::RewindableAudioStream *makeAudioStream(uint16 id, CueList *cueList = nullptr);
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};
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} // End of namespace Mohawk
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#endif
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