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/*
* DISTRHO Plugin Framework (DPF)
* Copyright (C) 2012-2016 Filipe Coelho <falktx@falktx.com>
*
* Permission to use, copy, modify, and/or distribute this software for any purpose with
* or without fee is hereby granted, provided that the above copyright notice and this
* permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD
* TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef DISTRHO_UTILS_HPP_INCLUDED
#define DISTRHO_UTILS_HPP_INCLUDED
#include "src/DistrhoDefines.h"
#include <cstdarg>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <limits>
#ifdef DISTRHO_PROPER_CPP11_SUPPORT
# include <cstdint>
#else
# include <stdint.h>
#endif
#if defined(DISTRHO_OS_MAC) && ! defined(CARLA_OS_MAC) && ! (defined(DISTRHO_PROPER_CPP11_SUPPORT) && defined(__clang__))
namespace std {
inline float fmin(float __x, float __y)
{ return __builtin_fminf(__x, __y); }
inline float fmax(float __x, float __y)
{ return __builtin_fmaxf(__x, __y); }
inline float rint(float __x)
{ return __builtin_rintf(__x); }
inline float round(float __x)
{ return __builtin_roundf(__x); }
}
#endif
#ifndef M_PI
# define M_PI 3.14159265358979323846
#endif
// -----------------------------------------------------------------------
// misc functions
/*
* Return a 64-bit number from 4 8-bit numbers.
*/
static inline
int64_t d_cconst(const uint8_t a, const uint8_t b, const uint8_t c, const uint8_t d) noexcept
{
return (a << 24) | (b << 16) | (c << 8) | (d << 0);
}
/*
* Return an hexadecimal representation of a MAJ.MIN.MICRO version number.
*/
static inline
uint32_t d_version(const uint8_t major, const uint8_t minor, const uint8_t micro) noexcept
{
return uint32_t(major << 16) | uint32_t(minor << 8) | (micro << 0);
}
/*
* Dummy function.
*/
static inline
void d_pass() noexcept {}
// -----------------------------------------------------------------------
// string print functions
/*
* Print a string to stdout with newline (gray color).
* Does nothing if DEBUG is not defined.
*/
#ifndef DEBUG
# define d_debug(...)
#else
static inline
void d_debug(const char* const fmt, ...) noexcept
{
try {
::va_list args;
::va_start(args, fmt);
std::fprintf(stdout, "\x1b[30;1m");
std::vfprintf(stdout, fmt, args);
std::fprintf(stdout, "\x1b[0m\n");
::va_end(args);
} catch (...) {}
}
#endif
/*
* Print a string to stdout with newline.
*/
static inline
void d_stdout(const char* const fmt, ...) noexcept
{
try {
::va_list args;
::va_start(args, fmt);
std::vfprintf(stdout, fmt, args);
std::fprintf(stdout, "\n");
::va_end(args);
} catch (...) {}
}
/*
* Print a string to stderr with newline.
*/
static inline
void d_stderr(const char* const fmt, ...) noexcept
{
try {
::va_list args;
::va_start(args, fmt);
std::vfprintf(stderr, fmt, args);
std::fprintf(stderr, "\n");
::va_end(args);
} catch (...) {}
}
/*
* Print a string to stderr with newline (red color).
*/
static inline
void d_stderr2(const char* const fmt, ...) noexcept
{
try {
::va_list args;
::va_start(args, fmt);
std::fprintf(stderr, "\x1b[31m");
std::vfprintf(stderr, fmt, args);
std::fprintf(stderr, "\x1b[0m\n");
::va_end(args);
} catch (...) {}
}
/*
* Print a safe assertion error message.
*/
static inline
void d_safe_assert(const char* const assertion, const char* const file, const int line) noexcept
{
d_stderr2("assertion failure: \"%s\" in file %s, line %i", assertion, file, line);
}
/*
* Print a safe exception error message.
*/
static inline
void d_safe_exception(const char* const exception, const char* const file, const int line) noexcept
{
d_stderr2("exception caught: \"%s\" in file %s, line %i", exception, file, line);
}
// -----------------------------------------------------------------------
// math functions
/*
* Safely compare two floating point numbers.
* Returns true if they match.
*/
template<typename T>
static inline
bool d_isEqual(const T& v1, const T& v2)
{
return std::abs(v1-v2) < std::numeric_limits<T>::epsilon();
}
/*
* Safely compare two floating point numbers.
* Returns true if they don't match.
*/
template<typename T>
static inline
bool d_isNotEqual(const T& v1, const T& v2)
{
return std::abs(v1-v2) >= std::numeric_limits<T>::epsilon();
}
/*
* Safely check if a floating point number is zero.
*/
template<typename T>
static inline
bool d_isZero(const T& value)
{
return std::abs(value) < std::numeric_limits<T>::epsilon();
}
/*
* Safely check if a floating point number is not zero.
*/
template<typename T>
static inline
bool d_isNotZero(const T& value)
{
return std::abs(value) >= std::numeric_limits<T>::epsilon();
}
/*
* Get next power of 2.
*/
static inline
uint32_t d_nextPowerOf2(uint32_t size) noexcept
{
DISTRHO_SAFE_ASSERT_RETURN(size > 0, 0);
// http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2
--size;
size |= size >> 1;
size |= size >> 2;
size |= size >> 4;
size |= size >> 8;
size |= size >> 16;
return ++size;
}
// -----------------------------------------------------------------------
#ifndef DONT_SET_USING_DISTRHO_NAMESPACE
// If your code uses a lot of DISTRHO classes, then this will obviously save you
// a lot of typing, but can be disabled by setting DONT_SET_USING_DISTRHO_NAMESPACE.
namespace DISTRHO_NAMESPACE {}
using namespace DISTRHO_NAMESPACE;
#endif
// -----------------------------------------------------------------------
#endif // DISTRHO_UTILS_HPP_INCLUDED
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