45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
// Copyright 2018 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <vector>
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#include "common/common_types.h"
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namespace AudioCore::Codec {
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enum class PcmFormat : u32 {
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Invalid = 0,
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Int8 = 1,
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Int16 = 2,
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Int24 = 3,
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Int32 = 4,
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PcmFloat = 5,
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Adpcm = 6,
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};
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/// See: Codec::DecodeADPCM
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struct ADPCMState {
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// Two historical samples from previous processed buffer,
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// required for ADPCM decoding
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s16 yn1; ///< y[n-1]
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s16 yn2; ///< y[n-2]
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};
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using ADPCM_Coeff = std::array<s16, 16>;
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/**
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* @param data Pointer to buffer that contains ADPCM data to decode
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* @param size Size of buffer in bytes
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* @param coeff ADPCM coefficients
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* @param state ADPCM state, this is updated with new state
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* @return Decoded stereo signed PCM16 data, sample_count in length
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*/
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std::vector<s16> DecodeADPCM(const u8* const data, size_t size, const ADPCM_Coeff& coeff,
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ADPCMState& state);
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}; // namespace AudioCore::Codec
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