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https://github.com/ZDoom/gzdoom-gles.git
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a4f05f5741
This is to improve compile times because the MSVC compiler tends to become slow with large lists of source files in a single project. This new project is still our stripped down copy of libadl, not the original, because that project contains a large amount of baggage we do not need. # Conflicts: # src/CMakeLists.txt # Conflicts: # src/sound/mididevices/music_adlmidi_mididevice.cpp
150 lines
4.7 KiB
C++
150 lines
4.7 KiB
C++
/*
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* Copyright (C) 2017-2018 Vitaly Novichkov (Wohlstand)
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; 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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#ifndef ONP_CHIP_BASE_H
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#define ONP_CHIP_BASE_H
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#include <stdint.h>
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#include <stddef.h>
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#if !defined(_MSC_VER) && (__cplusplus <= 199711L)
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#define final
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#define override
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#endif
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#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
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class VResampler;
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#endif
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#if defined(ADLMIDI_AUDIO_TICK_HANDLER)
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extern void adl_audioTickHandler(void *instance, uint32_t chipId, uint32_t rate);
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#endif
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class OPLChipBase
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{
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public:
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enum { nativeRate = 49716 };
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protected:
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uint32_t m_id;
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uint32_t m_rate;
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public:
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OPLChipBase();
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virtual ~OPLChipBase();
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uint32_t chipId() const { return m_id; }
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void setChipId(uint32_t id) { m_id = id; }
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virtual bool canRunAtPcmRate() const = 0;
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virtual bool isRunningAtPcmRate() const = 0;
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virtual bool setRunningAtPcmRate(bool r) = 0;
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#if defined(ADLMIDI_AUDIO_TICK_HANDLER)
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virtual void setAudioTickHandlerInstance(void *instance) = 0;
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#endif
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virtual void setRate(uint32_t rate) = 0;
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virtual uint32_t effectiveRate() const = 0;
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virtual void reset() = 0;
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virtual void writeReg(uint16_t addr, uint8_t data) = 0;
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// extended
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virtual void writePan(uint16_t addr, uint8_t data) { (void)addr; (void)data; }
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virtual void nativePreGenerate() = 0;
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virtual void nativePostGenerate() = 0;
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virtual void nativeGenerate(int16_t *frame) = 0;
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virtual void generate(int16_t *output, size_t frames) = 0;
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virtual void generateAndMix(int16_t *output, size_t frames) = 0;
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virtual void generate32(int32_t *output, size_t frames) = 0;
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virtual void generateAndMix32(int32_t *output, size_t frames) = 0;
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virtual const char* emulatorName() = 0;
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private:
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OPLChipBase(const OPLChipBase &c);
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OPLChipBase &operator=(const OPLChipBase &c);
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};
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// A base class providing F-bounded generic and efficient implementations,
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// supporting resampling of chip outputs
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template <class T>
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class OPLChipBaseT : public OPLChipBase
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{
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public:
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OPLChipBaseT();
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virtual ~OPLChipBaseT();
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bool isRunningAtPcmRate() const override;
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bool setRunningAtPcmRate(bool r) override;
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#if defined(ADLMIDI_AUDIO_TICK_HANDLER)
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void setAudioTickHandlerInstance(void *instance);
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#endif
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virtual void setRate(uint32_t rate) override;
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uint32_t effectiveRate() const override;
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virtual void reset() override;
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void generate(int16_t *output, size_t frames) override;
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void generateAndMix(int16_t *output, size_t frames) override;
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void generate32(int32_t *output, size_t frames) override;
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void generateAndMix32(int32_t *output, size_t frames) override;
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private:
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bool m_runningAtPcmRate;
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#if defined(ADLMIDI_AUDIO_TICK_HANDLER)
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void *m_audioTickHandlerInstance;
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#endif
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void nativeTick(int16_t *frame);
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void setupResampler(uint32_t rate);
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void resetResampler();
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void resampledGenerate(int32_t *output);
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#if defined(ADLMIDI_ENABLE_HQ_RESAMPLER)
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VResampler *m_resampler;
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#else
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int32_t m_oldsamples[2];
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int32_t m_samples[2];
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int32_t m_samplecnt;
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int32_t m_rateratio;
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enum { rsm_frac = 10 };
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#endif
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// amplitude scale factors in and out of resampler, varying for chips;
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// values are OK to "redefine", the static polymorphism will accept it.
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enum { resamplerPreAmplify = 1, resamplerPostAttenuate = 1 };
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};
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// A base class which provides frame-by-frame interfaces on emulations which
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// don't have a routine for it. It produces outputs in fixed size buffers.
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// Fast register updates will suffer some latency because of buffering.
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template <class T, unsigned Buffer = 256>
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class OPLChipBaseBufferedT : public OPLChipBaseT<T>
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{
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public:
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OPLChipBaseBufferedT()
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: OPLChipBaseT<T>(), m_bufferIndex(0) {}
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virtual ~OPLChipBaseBufferedT()
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{}
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public:
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void reset() override;
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void nativeGenerate(int16_t *frame) override;
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protected:
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virtual void nativeGenerateN(int16_t *output, size_t frames) = 0;
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private:
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unsigned m_bufferIndex;
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int16_t m_buffer[2 * Buffer];
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};
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#include "opl_chip_base.tcc"
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#endif // ONP_CHIP_BASE_H
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