ppsspp/Core/HW/StereoResampler.h

64 lines
1.7 KiB
C++

// Copyright (c) 2015- PPSSPP Project and Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official git repository and contact information can be found at
// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
// Adapted from Dolphin.
#pragma once
#include <string>
#include "Common/ChunkFile.h"
#include "Common/CommonTypes.h"
struct AudioDebugStats;
class StereoResampler {
public:
StereoResampler();
~StereoResampler();
// Called from audio threads
unsigned int Mix(short* samples, unsigned int numSamples, bool consider_framelimit, int sampleRate);
// Called from main thread
// This clamps the samples to 16-bit before starting to work on them.
void PushSamples(const s32* samples, unsigned int num_samples);
void Clear();
void DoState(PointerWrap &p);
void GetAudioDebugStats(AudioDebugStats *stats);
protected:
void UpdateBufferSize();
void SetInputSampleRate(unsigned int rate);
int m_bufsize;
int m_lowwatermark;
unsigned int m_input_sample_rate;
int16_t *m_buffer;
volatile u32 m_indexW;
volatile u32 m_indexR;
float m_numLeftI;
u32 m_frac;
int underrunCount_;
int overrunCount_;
float sample_rate_;
int lastBufSize_;
int lastPushSize_;
};