81 lines
2.6 KiB
C++
81 lines
2.6 KiB
C++
// Copyright 2017 Citra 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 <memory>
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#include <vector>
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#include "audio_core/audio_types.h"
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#include "audio_core/time_stretch.h"
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#include "common/common_types.h"
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#include "core/memory.h"
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namespace AudioCore {
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class Sink;
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class DspInterface {
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public:
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DspInterface();
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virtual ~DspInterface();
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DspInterface(const DspInterface&) = delete;
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DspInterface(DspInterface&&) = delete;
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DspInterface& operator=(const DspInterface&) = delete;
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DspInterface& operator=(DspInterface&&) = delete;
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/// Get the state of the DSP
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virtual DspState GetDspState() const = 0;
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/**
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* Reads `length` bytes from the DSP pipe identified with `pipe_number`.
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* @note Can read up to the maximum value of a u16 in bytes (65,535).
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* @note IF an error is encoutered with either an invalid `pipe_number` or `length` value, an
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* empty vector will be returned.
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* @note IF `length` is set to 0, an empty vector will be returned.
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* @note IF `length` is greater than the amount of data available, this function will only read
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* the available amount.
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* @param pipe_number a `DspPipe`
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* @param length the number of bytes to read. The max is 65,535 (max of u16).
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* @returns a vector of bytes from the specified pipe. On error, will be empty.
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*/
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virtual std::vector<u8> PipeRead(DspPipe pipe_number, u32 length) = 0;
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/**
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* How much data is left in pipe
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* @param pipe_number The Pipe ID
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* @return The amount of data remaning in the pipe. This is the maximum length PipeRead will
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* return.
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*/
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virtual size_t GetPipeReadableSize(DspPipe pipe_number) const = 0;
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/**
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* Write to a DSP pipe.
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* @param pipe_number The Pipe ID
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* @param buffer The data to write to the pipe.
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*/
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virtual void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer) = 0;
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/// Returns a reference to the array backing DSP memory
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virtual std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory() = 0;
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/// Select the sink to use based on sink id.
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void SetSink(const std::string& sink_id, const std::string& audio_device);
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/// Get the current sink
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Sink& GetSink();
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/// Enable/Disable audio stretching.
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void EnableStretching(bool enable);
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protected:
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void OutputFrame(StereoFrame16& frame);
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private:
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void FlushResidualStretcherAudio();
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std::unique_ptr<Sink> sink;
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bool perform_time_stretching = false;
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TimeStretcher time_stretcher;
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};
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} // namespace AudioCore
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