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