cpp/html/_switchboard_core_8hpp_source.html

//

//  SwitchboardCore.hpp

//  SwitchboardSDK

//

//  Created by Balázs Kiss on 2022. 02. 22..

//  Copyright © 2022. Synervoz Inc. All rights reserved.

//


#pragma once


#include "SwitchboardVersion.hpp"

#include "Platform.hpp"


#include <algorithm>

#include <atomic>

#include <cassert>

#include <cstdio>

#include <cstdlib>

#include <cstring>

#include <memory>

#include <string>


// MARK: - Types


// Check if data sizes are standard

static_assert(sizeof(char) == 1);

static_assert(sizeof(short) == 2);

static_assert(sizeof(int) == 4);

static_assert(sizeof(long long) == 8);


// Define fixed-size data types

using int8 = char;

using uint8 = unsigned char;

using int16 = short;

using uint16 = unsigned short;

using int64 = long long;

using uint64 = unsigned long long;

using uint = unsigned int;


// MARK: - Constants


namespace switchboard::constants {


static constexpr uint DEFAULT_SAMPLERATE = 44100;

static constexpr uint MAX_SAMPLERATE = 48000;

static constexpr uint MAX_BUFFER_DURATION_MS = 1000;

static constexpr uint MAX_NUMBER_OF_FRAMES = MAX_SAMPLERATE * MAX_BUFFER_DURATION_MS / 1000;

// ~85ms@48kHz or ~93ms@44.1kHz

static constexpr uint LEGACY_MAX_NUMBER_OF_FRAMES = 4096;


static constexpr uint NUM_CHANNELS_UNDEFINED = 0;

static constexpr uint MONO = 1;

static constexpr uint STEREO = 2;

static constexpr uint QUAD = 4;


static constexpr uint LEFT = 0;

static constexpr uint RIGHT = 1;


static constexpr uint SAMPLE_RATE_UNDEFINED = 0;

static constexpr uint SAMPLE_RATE_8KHz = 8000;

static constexpr uint SAMPLE_RATE_10KHz = 10000;

static constexpr uint SAMPLE_RATE_16KHz = 16000;

static constexpr uint SAMPLE_RATE_24KHz = 24000;

static constexpr uint SAMPLE_RATE_44_1KHz = 44100;

static constexpr uint SAMPLE_RATE_48KHz = 48000;


}


// MARK: - Preprocessor directives


// Web-specific defines

#if defined(SWITCHBOARD_WEB)

#include <emscripten.h>

#define SB_WASM EMSCRIPTEN_KEEPALIVE

#define SB_WASM_EXPORT(CLASS_NAME) \

    SB_WASM static size_t getObjectSize() { \

        return sizeof(CLASS_NAME); \

    }

#else

#define SB_WASM

#define SB_WASM_EXPORT(CLASS_NAME)

#endif


#if NETWORKING_ENABLED && SWITCHBOARD_LICENSE_VALIDATION_ENABLED

#define LICENSE_VALIDATION_ENABLED true

#else

#define LICENSE_VALIDATION_ENABLED false

#endif


#if !defined(M_PI)

#define M_PI 3.1415926535897932384626433832

#endif


#if !defined(M_PI_2)

#define M_PI_2 M_PI / 2

#endif


#if defined(__has_cpp_attribute) && __has_cpp_attribute(clang::nonblocking)

#define NONBLOCKING [[clang::nonblocking]]

#else

#define NONBLOCKING

#endif