mirror of https://github.com/jorio/Pomme.git
111 lines
2.2 KiB
C++
111 lines
2.2 KiB
C++
#pragma once
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#include "CompilerSupport/span.h"
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#include "PommeTypes.h"
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#include <vector>
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#include <istream>
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#include <ostream>
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#include <memory>
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namespace Pomme::Sound
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{
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void InitMidiFrequencyTable();
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void InitMixer();
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void ShutdownMixer();
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double GetMidiNoteFrequency(int note);
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std::string GetMidiNoteName(int note);
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struct SampledSoundInfo
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{
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int16_t nChannels;
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uint32_t nPackets;
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int16_t codecBitDepth;
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bool bigEndian;
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double sampleRate;
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bool isCompressed;
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uint32_t compressionType;
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char* dataStart;
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int compressedLength;
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int decompressedLength;
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int8_t baseNote;
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uint32_t loopStart;
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uint32_t loopEnd;
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SndListHandle MakeStandaloneResource(char** dataOffsetOut = nullptr) const;
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};
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class Codec
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{
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public:
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virtual ~Codec()
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{}
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virtual int SamplesPerPacket() = 0;
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virtual int BytesPerPacket() = 0;
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virtual int AIFFBitDepth() = 0;
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virtual void Decode(const int nChannels, const std::span<const char> input, const std::span<char> output) = 0;
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};
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class MACE : public Codec
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{
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public:
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int SamplesPerPacket() override
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{ return 6; }
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int BytesPerPacket() override
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{ return 2; }
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int AIFFBitDepth() override
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{ return 8; }
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void Decode(const int nChannels, const std::span<const char> input, const std::span<char> output) override;
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};
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class IMA4 : public Codec
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{
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public:
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int SamplesPerPacket() override
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{ return 64; }
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int BytesPerPacket() override
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{ return 34; }
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int AIFFBitDepth() override
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{ return 16; }
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void Decode(const int nChannels, const std::span<const char> input, const std::span<char> output) override;
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};
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class xlaw : public Codec
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{
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const int16_t* xlawToPCM;
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public:
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xlaw(uint32_t codecFourCC);
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int SamplesPerPacket() override
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{ return 1; }
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int BytesPerPacket() override
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{ return 1; }
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int AIFFBitDepth() override
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{ return 8; }
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void Decode(const int nChannels, const std::span<const char> input, const std::span<char> output) override;
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};
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void GetSoundInfo(const Ptr sndhdr, SampledSoundInfo& info);
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void GetSoundInfoFromSndResource(Handle sndHandle, SampledSoundInfo& info);
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SndListHandle LoadAIFFAsResource(std::istream& input);
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SndListHandle LoadMP3AsResource(std::istream& input);
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std::unique_ptr<Pomme::Sound::Codec> GetCodec(uint32_t fourCC);
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}
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