mirror of
https://github.com/jorio/Pomme.git
synced 2024-09-27 12:55:59 +00:00
163 lines
4.1 KiB
C++
163 lines
4.1 KiB
C++
// Adapted from cmixer by rxi (https://github.com/rxi/cmixer)
|
|
|
|
/*
|
|
** Copyright (c) 2017 rxi
|
|
**
|
|
** Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
** of this software and associated documentation files (the "Software"), to
|
|
** deal in the Software without restriction, including without limitation the
|
|
** rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
** sell copies of the Software, and to permit persons to whom the Software is
|
|
** furnished to do so, subject to the following conditions:
|
|
**
|
|
** The above copyright notice and this permission notice shall be included in
|
|
** all copies or substantial portions of the Software.
|
|
**
|
|
** THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
** IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
** FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
** AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
** LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
** FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
** IN THE SOFTWARE.
|
|
**/
|
|
|
|
#pragma once
|
|
|
|
#include <vector>
|
|
#include <functional>
|
|
#include <cstdint>
|
|
#include "CompilerSupport/span.h"
|
|
|
|
#define BUFFER_SIZE (512)
|
|
|
|
namespace cmixer
|
|
{
|
|
|
|
enum
|
|
{
|
|
CM_STATE_STOPPED,
|
|
CM_STATE_PLAYING,
|
|
CM_STATE_PAUSED
|
|
};
|
|
|
|
struct Source
|
|
{
|
|
int16_t pcmbuf[BUFFER_SIZE]; // Internal buffer with raw stereo PCM
|
|
int samplerate; // Stream's native samplerate
|
|
int length; // Stream's length in frames
|
|
int end; // End index for the current play-through
|
|
int state; // Current state (playing|paused|stopped)
|
|
int64_t position; // Current playhead position (fixed point)
|
|
int lgain, rgain; // Left and right gain (fixed point)
|
|
int rate; // Playback rate (fixed point)
|
|
int nextfill; // Next frame idx where the buffer needs to be filled
|
|
bool loop; // Whether the source will loop when `end` is reached
|
|
bool rewind; // Whether the source will rewind before playing
|
|
bool active; // Whether the source is part of `sources` list
|
|
bool interpolate; // Interpolated resampling when played back at a non-native rate
|
|
double gain; // Gain set by `cm_set_gain()`
|
|
double pan; // Pan set by `cm_set_pan()`
|
|
std::function<void()> onComplete; // Callback
|
|
|
|
void ClearPrivate();
|
|
|
|
protected:
|
|
Source();
|
|
|
|
void Init(int samplerate, int length);
|
|
|
|
virtual void RewindImplementation() = 0;
|
|
|
|
virtual void ClearImplementation() = 0;
|
|
|
|
virtual void FillBuffer(int16_t* buffer, int length) = 0;
|
|
|
|
public:
|
|
virtual ~Source();
|
|
|
|
void Clear();
|
|
|
|
void Rewind();
|
|
|
|
void RecalcGains();
|
|
|
|
void FillBuffer(int offset, int length);
|
|
|
|
void Process(int len);
|
|
|
|
double GetLength() const;
|
|
|
|
double GetPosition() const;
|
|
|
|
int GetState() const;
|
|
|
|
void SetGain(double gain);
|
|
|
|
void SetPan(double pan);
|
|
|
|
void SetPitch(double pitch);
|
|
|
|
void SetLoop(bool loop);
|
|
|
|
void SetInterpolation(bool interpolation);
|
|
|
|
void Play();
|
|
|
|
void Pause();
|
|
|
|
void TogglePause();
|
|
|
|
void Stop();
|
|
};
|
|
|
|
class WavStream : public Source
|
|
{
|
|
int bitdepth;
|
|
int channels;
|
|
bool bigEndian;
|
|
int idx;
|
|
std::span<char> span;
|
|
std::vector<char> userBuffer;
|
|
|
|
void ClearImplementation() override;
|
|
|
|
void RewindImplementation() override;
|
|
|
|
void FillBuffer(int16_t* buffer, int length) override;
|
|
|
|
inline uint8_t* data8() const
|
|
{ return reinterpret_cast<uint8_t*>(span.data()); }
|
|
|
|
inline int16_t* data16() const
|
|
{ return reinterpret_cast<int16_t*>(span.data()); }
|
|
|
|
public:
|
|
WavStream();
|
|
|
|
void Init(
|
|
int theSampleRate,
|
|
int theBitDepth,
|
|
int nChannels,
|
|
bool bigEndian,
|
|
std::span<char> data
|
|
);
|
|
|
|
std::span<char> GetBuffer(int nBytesOut);
|
|
|
|
std::span<char> SetBuffer(std::vector<char>&& data);
|
|
};
|
|
|
|
|
|
void InitWithSDL();
|
|
|
|
void ShutdownWithSDL();
|
|
|
|
double GetMasterGain();
|
|
|
|
void SetMasterGain(double);
|
|
|
|
WavStream LoadWAVFromFile(const char* path);
|
|
|
|
}
|