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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <vector>
#include "common/common_types.h"
namespace DSP {
namespace HLE {
/// Reset the pipes by setting pipe positions back to the beginning.
void ResetPipes();
enum class DspPipe { Debug = 0, Dma = 1, Audio = 2, Binary = 3 };
constexpr size_t NUM_DSP_PIPE = 8;
/**
* Reads `length` bytes from the DSP pipe identified with `pipe_number`.
* @note Can read up to the maximum value of a u16 in bytes (65,535).
* @note IF an error is encoutered with either an invalid `pipe_number` or `length` value, an empty
* vector will be returned.
* @note IF `length` is set to 0, an empty vector will be returned.
* @note IF `length` is greater than the amount of data available, this function will only read the
* available amount.
* @param pipe_number a `DspPipe`
* @param length the number of bytes to read. The max is 65,535 (max of u16).
* @returns a vector of bytes from the specified pipe. On error, will be empty.
*/
std::vector<u8> PipeRead(DspPipe pipe_number, u32 length);
/**
* How much data is left in pipe
* @param pipe_number The Pipe ID
* @return The amount of data remaning in the pipe. This is the maximum length PipeRead will return.
*/
size_t GetPipeReadableSize(DspPipe pipe_number);
/**
* Write to a DSP pipe.
* @param pipe_number The Pipe ID
* @param buffer The data to write to the pipe.
*/
void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer);
enum class DspState { Off, On, Sleeping };
/// Get the state of the DSP
DspState GetDspState();
} // namespace HLE
} // namespace DSP
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