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https://github.com/scummvm/scummvm.git
synced 2025-04-02 10:52:32 -04:00
d165b1dc93
(and other minor adjustments) The DOTT Mac imuse driver always sets master volume to max. The SAMNMAX driver does not have a hack like this.
264 lines
8.5 KiB
C++
264 lines
8.5 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 modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (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, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef SCUMM_PLAYERS_MAC_SOUND_LOWLEVEL_H
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#define SCUMM_PLAYERS_MAC_SOUND_LOWLEVEL_H
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#include "audio/audiostream.h"
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#include "audio/mixer.h"
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#include "common/array.h"
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#include "common/func.h"
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namespace Scumm {
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class MacSoundDriver {
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public:
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MacSoundDriver(Common::Mutex &mutex, uint32 deviceRate, int activeChannels, bool canInterpolate, bool internal16Bit) : _mutex(mutex),
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_smpSize(internal16Bit ? 2 : 1), _smpMin(internal16Bit ? -32768 : -128), _smpMax(internal16Bit ? 32767 : 127) {
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for (int i = 0; i < 4; ++i) {
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_status[i].deviceRate = deviceRate;
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_status[i].numExternalMixChannels = activeChannels;
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_status[i].allowInterPolation = canInterpolate;
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_status[i].flags = 0;
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}
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}
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virtual ~MacSoundDriver() {}
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virtual void feed(int8 *dst, uint32 byteSize, Audio::Mixer::SoundType type, bool expectStereo) = 0;
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struct Status {
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Status() : deviceRate(0), numExternalMixChannels(0), allowInterPolation(false), flags(0) {}
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uint32 deviceRate;
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int numExternalMixChannels;
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bool allowInterPolation;
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uint8 flags;
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};
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const Status &getStatus(Audio::Mixer::SoundType sndType = Audio::Mixer::kPlainSoundType) const { return _status[sndType]; }
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enum StatusFlag : uint8 {
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kStatusPlaying = 1 << 0,
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kStatusOverflow = 1 << 1,
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kStatusStartup = 1 << 2,
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kStatusDone = 1 << 3,
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kStatusDisabled = 1 << 7
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};
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void clearFlags(uint8 flags, Audio::Mixer::SoundType sndType = Audio::Mixer::kPlainSoundType) { _status[sndType].flags &= ~flags; }
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void setFlags(uint8 flags, Audio::Mixer::SoundType sndType = Audio::Mixer::kPlainSoundType) { _status[sndType].flags |= flags; }
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protected:
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Common::Mutex &_mutex;
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const int _smpSize;
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const int16 _smpMin;
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const int16 _smpMax;
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Status _status[4];
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};
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class MacSndChannel;
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class MacLowLevelPCMDriver final : public MacSoundDriver {
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public:
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struct PCMSound {
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PCMSound() : len(0), rate(0), loopst(0), loopend(0), baseFreq(0), stereo(false), enc(0) {}
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PCMSound(Common::SharedPtr<const byte> a, uint32 b, uint32 c, uint32 d, uint32 e, byte f, byte g, bool h) : data(a), len(b), rate(c), loopst(d), loopend(e), baseFreq(f), enc(g), stereo(h) {}
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Common::SharedPtr<const byte> data;
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uint32 len;
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uint32 rate;
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uint32 loopst;
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uint32 loopend;
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byte baseFreq;
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byte enc;
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bool stereo;
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};
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enum SynthType : byte {
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kSquareWaveSynth = 1,
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kWaveTableSynth = 3,
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kSampledSynth = 5,
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kIgnoreSynth = 0xff
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};
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enum ChanAttrib : byte {
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kInitChanLeft = 2,
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kInitChanRight = 3,
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kWaveInitChannel0 = 4,
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kWaveInitChannel1 = 5,
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kWaveInitChannel2 = 6,
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kWaveInitChannel3 = 7,
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kNoInterp = 4,
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kInitNoDrop = 8,
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kInitMono = 0x80,
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kInitStereo = 0xC0
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};
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enum ExecMode : byte {
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kImmediate,
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kEnqueue,
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};
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typedef int ChanHandle;
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struct DoubleBuffer {
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enum Flags : uint32 {
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kBufferReady = 1,
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kLastBufferLast = 4
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};
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DoubleBuffer(ChanHandle hdl, uint32 numframes) : numFrames(numframes), flags(0), data(0), chanHandle(hdl) {}
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~DoubleBuffer() { delete[] data; }
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uint32 numFrames;
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const ChanHandle chanHandle;
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uint32 flags;
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byte *data;
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};
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class CallbackClient {
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public:
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virtual ~CallbackClient() {}
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virtual void sndChannelCallback(uint16 arg1, const void *arg2) {}
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virtual void dblBuffCallback(DoubleBuffer *dblBuffer) {}
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};
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typedef Common::Functor2Mem<uint16, const void*, void, CallbackClient> ChanCallback;
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typedef Common::Functor1Mem<DoubleBuffer*, void, CallbackClient> DBCallback;
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public:
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MacLowLevelPCMDriver(Common::Mutex &mutex, uint32 deviceRate, bool internal16Bit);
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~MacLowLevelPCMDriver() override;
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void feed(int8 *dst, uint32 byteSize, Audio::Mixer::SoundType type, bool expectStereo) override;
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ChanHandle createChannel(Audio::Mixer::SoundType sndType, SynthType synthType, byte attributes, ChanCallback *callback);
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void disposeChannel(ChanHandle handle);
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void playSamples(ChanHandle handle, ExecMode mode, const PCMSound *snd);
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void playNote(ChanHandle handle, ExecMode mode, uint8 note, uint16 duration);
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void quiet(ChanHandle handle, ExecMode mode);
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void flush(ChanHandle handle, ExecMode mode);
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void wait(ChanHandle handle, ExecMode mode, uint16 duration);
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void loadWaveTable(ChanHandle handle, ExecMode mode, const byte *data, uint16 dataSize);
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void loadInstrument(ChanHandle handle, ExecMode mode, const PCMSound *snd);
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void setTimbre(ChanHandle handle, ExecMode mode, uint16 timbre);
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void callback(ChanHandle handle, ExecMode mode, uint16 arg1, const void *arg2);
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bool playDoubleBuffer(ChanHandle handle, byte numChan, byte bitsPerSample, uint32 rate, DBCallback *callback, byte numMixChan = 1);
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uint8 getChannelStatus(ChanHandle handle) const;
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void clearChannelFlags(ChanHandle handle, uint8 flags);
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static uint32 calcRate(uint32 outRate, uint32 factor, uint32 dataRate);
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private:
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void updateStatus(Audio::Mixer::SoundType sndType);
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MacSndChannel *findAndCheckChannel(ChanHandle h, const char *caller, byte reqSynthType) const;
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MacSndChannel *findChannel(ChanHandle h) const;
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Common::Array<MacSndChannel*> _channels;
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int _numInternalMixChannels[4];
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int32 *_mixBuffer = 0;
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uint32 _mixBufferSize;
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};
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class VblTaskClientDriver {
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public:
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virtual ~VblTaskClientDriver() {}
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virtual void vblCallback() = 0;
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virtual void generateData(int8 *dst, uint32 len, Audio::Mixer::SoundType type, bool expectStereo) const = 0;
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virtual const MacSoundDriver::Status &getDriverStatus(Audio::Mixer::SoundType sndType) const = 0;
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};
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class MacPlayerAudioStream : public Audio::AudioStream {
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public:
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MacPlayerAudioStream(VblTaskClientDriver *drv, uint32 scummVMOutputrate, bool stereo, bool interpolate, bool internal16Bit);
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~MacPlayerAudioStream() override;
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void initBuffers(uint32 feedBufferSize);
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void initDrivers();
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void addVolumeGroup(Audio::Mixer::SoundType type);
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void scaleVolume(uint upscale, uint downscale) { _upscale = upscale; _downscale = downscale; }
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typedef Common::Functor0Mem<void, VblTaskClientDriver> CallbackProc;
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void setVblCallback(const CallbackProc *proc);
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void clearBuffer();
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void setMasterVolume(Audio::Mixer::SoundType type, uint16 vol);
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// AudioStream interface
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int readBuffer(int16 *buffer, const int numSamples) override;
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bool isStereo() const override { return _isStereo; }
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int getRate() const override { return _outputRate; }
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bool endOfData() const override { return false; }
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private:
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void generateData(int8 *dst, uint32 byteSize, Audio::Mixer::SoundType, bool expectStereo) const;
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void runVblTask();
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VblTaskClientDriver *_drv;
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int _numGroups;
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uint16 _upscale;
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uint16 _downscale;
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uint32 _vblSmpQty;
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uint32 _vblSmpQtyRem;
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uint32 _vblCountDown;
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uint32 _vblCountDownRem;
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const CallbackProc *_vblCbProc;
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struct SmpBuffer {
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SmpBuffer() : start(0), pos(0), end(0), volume(0), lastL(0), lastR(0), size(0), rateConvInt(0), rateConvFrac(0), rateConvAcc(-1), group(Audio::Mixer::kPlainSoundType) {}
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int8 *start;
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int8 *pos;
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const int8 *end;
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uint32 volume;
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int32 lastL;
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int32 lastR;
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uint32 size;
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uint32 rateConvInt;
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uint32 rateConvFrac;
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int32 rateConvAcc;
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Audio::Mixer::SoundType group;
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} *_buffers;
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const uint32 _outputRate;
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const uint8 _frameSize;
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const bool _interp;
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const int _smpInternalSize;
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const bool _isStereo;
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};
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struct MacSndResource {
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public:
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// Construct from Mac resource stream
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MacSndResource(uint32 id, Common::SeekableReadStream *&in, Common::String &&name);
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// Construct from Mac sound data buffer
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MacSndResource(uint32 id, const byte *in, uint32 size);
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~MacSndResource() {}
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const MacLowLevelPCMDriver::PCMSound *data() const { return &_snd; }
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uint32 id() const { return _id; }
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const char* name() { return _name.c_str(); }
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private:
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uint32 _id;
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Common::String _name;
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MacLowLevelPCMDriver::PCMSound _snd;
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};
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extern const uint8 _fourToneSynthWaveForm[256];
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extern const uint32 _fourToneSynthWaveFormSize;
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} // End of namespace Scumm
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#endif
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