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livetrax/libs/vst3/pluginterfaces/base/funknown.cpp
Violet Purcell 8aa716d437
Backport VST3 libc++ fix on linux 
LLVM libc++ does not have the ext/atomicity.h header. This fix is copied
from the upstream vst3_pluginterfaces repo.

Signed-off-by: Violet Purcell <vimproved@inventati.org>
2023-09-22 04:41:11 +02:00

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//-----------------------------------------------------------------------------
// Project : SDK Core
//
// Category : SDK Core Interfaces
// Filename : pluginterfaces/base/funknown.cpp
// Created by : Steinberg, 01/2004
// Description : Basic Interface
//
//-----------------------------------------------------------------------------
// This file is part of a Steinberg SDK. It is subject to the license terms
// in the LICENSE file found in the top-level directory of this distribution
// and at www.steinberg.net/sdklicenses.
// No part of the SDK, including this file, may be copied, modified, propagated,
// or distributed except according to the terms contained in the LICENSE file.
//-----------------------------------------------------------------------------
#include "funknown.h"
#include "fstrdefs.h"
#include <stdio.h>
#if SMTG_OS_WINDOWS
#include <objbase.h>
#if defined(__MINGW32__)
/* UUID */
#include <string>
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>
#endif
#endif
#if SMTG_OS_MACOS
#include <CoreFoundation/CoreFoundation.h>
#include <libkern/OSAtomic.h>
#if defined(__GNUC__) && (__GNUC__ >= 4) && !__LP64__
// on 32 bit Mac OS X we can safely ignore the format warnings as sizeof(int) == sizeof(long)
#pragma GCC diagnostic ignored "-Wformat"
#endif
#endif
#if SMTG_OS_LINUX
#if !defined (SMTG_USE_STDATOMIC_H)
#if defined (_LIBCPP_VERSION)
#define SMTG_USE_STDATOMIC_H 1
#else
#include <ext/atomicity.h>
#endif
#endif
/* UUID */
#include <string>
#include <boost/uuid/uuid.hpp>
#include <boost/uuid/uuid_generators.hpp>
#endif
#if defined (SMTG_USE_STDATOMIC_H) && SMTG_USE_STDATOMIC_H
#include <stdatomic.h>
#endif
namespace Steinberg {
//------------------------------------------------------------------------
#if COM_COMPATIBLE
#if SMTG_OS_WINDOWS
#define GuidStruct GUID
#else
struct GuidStruct
{
uint32 Data1;
uint16 Data2;
uint16 Data3;
uint8 Data4[8];
};
#endif
#endif
static void toString8 (char8* string, const char* data, int32 i1, int32 i2);
static void fromString8 (const char8* string, char* data, int32 i1, int32 i2);
static uint32 makeLong (uint8 b1, uint8 b2, uint8 b3, uint8 b4);
//------------------------------------------------------------------------
// FUnknownPrivate
//------------------------------------------------------------------------
namespace FUnknownPrivate {
//------------------------------------------------------------------------
int32 PLUGIN_API atomicAdd (int32& var, int32 d)
{
#if SMTG_USE_STDATOMIC_H
return atomic_fetch_add (reinterpret_cast<atomic_int_least32_t*> (&var), d) +d;
#elif SMTG_OS_WINDOWS
return InterlockedExchangeAdd ((volatile long int*)&var, d) + d;
#elif SMTG_OS_MACOS
return OSAtomicAdd32Barrier (d, (int32_t*)&var);
#elif SMTG_OS_LINUX
__gnu_cxx::__atomic_add (&var, d);
return var;
#else
#warning implement me!
var += d;
return var;
#endif
}
} // FUnknownPrivate
//------------------------------------------------------------------------
// FUID implementation
//------------------------------------------------------------------------
FUID::FUID ()
{
memset (data, 0, sizeof (TUID));
}
//------------------------------------------------------------------------
FUID::FUID (uint32 l1, uint32 l2, uint32 l3, uint32 l4)
{
from4Int (l1, l2, l3, l4);
}
//------------------------------------------------------------------------
FUID::FUID (const FUID& f)
{
memcpy (data, f.data, sizeof (TUID));
}
//------------------------------------------------------------------------
#if SMTG_CPP11_STDLIBSUPPORT
FUID::FUID (FUID&& other)
{
memcpy (data, other.data, sizeof (TUID));
}
FUID& FUID::operator= (FUID&& other)
{
memcpy (data, other.data, sizeof (TUID));
return *this;
}
#endif
//------------------------------------------------------------------------
bool FUID::generate ()
{
#if SMTG_OS_WINDOWS
#if defined(_M_ARM64) || defined(_M_ARM)
//#warning implement me!
return false;
#elif defined(__MINGW32__)
boost::uuids::uuid u = boost::uuids::random_generator()();
memcpy(data, (const void*)&u, 16);
return true;
#else
GUID guid;
HRESULT hr = CoCreateGuid (&guid);
switch (hr)
{
case RPC_S_OK: memcpy (data, (char*)&guid, sizeof (TUID)); return true;
case RPC_S_UUID_LOCAL_ONLY:
default: return false;
}
#endif
#elif SMTG_OS_MACOS
CFUUIDRef uuid = CFUUIDCreate (kCFAllocatorDefault);
if (uuid)
{
CFUUIDBytes bytes = CFUUIDGetUUIDBytes (uuid);
memcpy (data, (char*)&bytes, sizeof (TUID));
CFRelease (uuid);
return true;
}
return false;
#elif SMTG_OS_LINUX
boost::uuids::uuid u = boost::uuids::random_generator()();
memcpy(data, (const void*)&u, 16);
return true;
#else
#warning implement me!
return false;
#endif
}
//------------------------------------------------------------------------
bool FUID::isValid () const
{
TUID nulluid = {0};
return memcmp (data, nulluid, sizeof (TUID)) != 0;
}
//------------------------------------------------------------------------
FUID& FUID::operator= (const FUID& f)
{
memcpy (data, f.data, sizeof (TUID));
return *this;
}
//------------------------------------------------------------------------
void FUID::from4Int (uint32 l1, uint32 l2, uint32 l3, uint32 l4)
{
#if COM_COMPATIBLE
data [0] = (char)((l1 & 0x000000FF) );
data [1] = (char)((l1 & 0x0000FF00) >> 8);
data [2] = (char)((l1 & 0x00FF0000) >> 16);
data [3] = (char)((l1 & 0xFF000000) >> 24);
data [4] = (char)((l2 & 0x00FF0000) >> 16);
data [5] = (char)((l2 & 0xFF000000) >> 24);
data [6] = (char)((l2 & 0x000000FF) );
data [7] = (char)((l2 & 0x0000FF00) >> 8);
data [8] = (char)((l3 & 0xFF000000) >> 24);
data [9] = (char)((l3 & 0x00FF0000) >> 16);
data [10] = (char)((l3 & 0x0000FF00) >> 8);
data [11] = (char)((l3 & 0x000000FF) );
data [12] = (char)((l4 & 0xFF000000) >> 24);
data [13] = (char)((l4 & 0x00FF0000) >> 16);
data [14] = (char)((l4 & 0x0000FF00) >> 8);
data [15] = (char)((l4 & 0x000000FF) );
#else
data [0] = (char)((l1 & 0xFF000000) >> 24);
data [1] = (char)((l1 & 0x00FF0000) >> 16);
data [2] = (char)((l1 & 0x0000FF00) >> 8);
data [3] = (char)((l1 & 0x000000FF) );
data [4] = (char)((l2 & 0xFF000000) >> 24);
data [5] = (char)((l2 & 0x00FF0000) >> 16);
data [6] = (char)((l2 & 0x0000FF00) >> 8);
data [7] = (char)((l2 & 0x000000FF) );
data [8] = (char)((l3 & 0xFF000000) >> 24);
data [9] = (char)((l3 & 0x00FF0000) >> 16);
data [10] = (char)((l3 & 0x0000FF00) >> 8);
data [11] = (char)((l3 & 0x000000FF) );
data [12] = (char)((l4 & 0xFF000000) >> 24);
data [13] = (char)((l4 & 0x00FF0000) >> 16);
data [14] = (char)((l4 & 0x0000FF00) >> 8);
data [15] = (char)((l4 & 0x000000FF) );
#endif
}
//------------------------------------------------------------------------
void FUID::to4Int (uint32& d1, uint32& d2, uint32& d3, uint32& d4) const
{
d1 = getLong1 ();
d2 = getLong2 ();
d3 = getLong3 ();
d4 = getLong4 ();
}
//------------------------------------------------------------------------
uint32 FUID::getLong1 () const
{
#if COM_COMPATIBLE
return makeLong (data[3], data[2], data[1], data[0]);
#else
return makeLong (data[0], data[1], data[2], data[3]);
#endif
}
//------------------------------------------------------------------------
uint32 FUID::getLong2 () const
{
#if COM_COMPATIBLE
return makeLong (data[5], data[4], data[7], data[6]);
#else
return makeLong (data[4], data[5], data[6], data[7]);
#endif
}
//------------------------------------------------------------------------
uint32 FUID::getLong3 () const
{
#if COM_COMPATIBLE
return makeLong (data[8], data[9], data[10], data[11]);
#else
return makeLong (data[8], data[9], data[10], data[11]);
#endif
}
//------------------------------------------------------------------------
uint32 FUID::getLong4 () const
{
#if COM_COMPATIBLE
return makeLong (data[12], data[13], data[14], data[15]);
#else
return makeLong (data[12], data[13], data[14], data[15]);
#endif
}
//------------------------------------------------------------------------
void FUID::toString (char8* string) const
{
if (!string)
return;
#if COM_COMPATIBLE
GuidStruct* g = (GuidStruct*)data;
char8 s[17];
Steinberg::toString8 (s, data, 8, 16);
sprintf (string, "%08X%04X%04X%s", g->Data1, g->Data2, g->Data3, s);
#else
Steinberg::toString8 (string, data, 0, 16);
#endif
}
//------------------------------------------------------------------------
bool FUID::fromString (const char8* string)
{
if (!string || !*string)
return false;
if (strlen (string) != 32)
return false;
#if COM_COMPATIBLE
GuidStruct g;
char s[33];
strcpy (s, string);
s[8] = 0;
sscanf (s, "%x", &g.Data1);
strcpy (s, string + 8);
s[4] = 0;
sscanf (s, "%hx", &g.Data2);
strcpy (s, string + 12);
s[4] = 0;
sscanf (s, "%hx", &g.Data3);
memcpy (data, &g, 8);
Steinberg::fromString8 (string + 16, data, 8, 16);
#else
Steinberg::fromString8 (string, data, 0, 16);
#endif
return true;
}
//------------------------------------------------------------------------
bool FUID::fromRegistryString (const char8* string)
{
if (!string || !*string)
return false;
if (strlen (string) != 38)
return false;
// e.g. {c200e360-38c5-11ce-ae62-08002b2b79ef}
#if COM_COMPATIBLE
GuidStruct g;
char8 s[10];
strncpy (s, string + 1, 8);
s[8] = 0;
sscanf (s, "%x", &g.Data1);
strncpy (s, string + 10, 4);
s[4] = 0;
sscanf (s, "%hx", &g.Data2);
strncpy (s, string + 15, 4);
s[4] = 0;
sscanf (s, "%hx", &g.Data3);
memcpy (data, &g, 8);
Steinberg::fromString8 (string + 20, data, 8, 10);
Steinberg::fromString8 (string + 25, data, 10, 16);
#else
Steinberg::fromString8 (string + 1, data, 0, 4);
Steinberg::fromString8 (string + 10, data, 4, 6);
Steinberg::fromString8 (string + 15, data, 6, 8);
Steinberg::fromString8 (string + 20, data, 8, 10);
Steinberg::fromString8 (string + 25, data, 10, 16);
#endif
return true;
}
//------------------------------------------------------------------------
void FUID::toRegistryString (char8* string) const
{
// e.g. {c200e360-38c5-11ce-ae62-08002b2b79ef}
#if COM_COMPATIBLE
GuidStruct* g = (GuidStruct*)data;
char8 s1[5];
Steinberg::toString8 (s1, data, 8, 10);
char8 s2[13];
Steinberg::toString8 (s2, data, 10, 16);
sprintf (string, "{%08X-%04X-%04X-%s-%s}", g->Data1, g->Data2, g->Data3, s1, s2);
#else
char8 s1[9];
Steinberg::toString8 (s1, data, 0, 4);
char8 s2[5];
Steinberg::toString8 (s2, data, 4, 6);
char8 s3[5];
Steinberg::toString8 (s3, data, 6, 8);
char8 s4[5];
Steinberg::toString8 (s4, data, 8, 10);
char8 s5[13];
Steinberg::toString8 (s5, data, 10, 16);
sprintf (string, "{%s-%s-%s-%s-%s}", s1, s2, s3, s4, s5);
#endif
}
//------------------------------------------------------------------------
void FUID::print (char8* string, int32 style) const
{
if (!string) // no string: debug output
{
char8 str[128];
print (str, style);
#if SMTG_OS_WINDOWS
OutputDebugStringA (str);
OutputDebugStringA ("\n");
#else
fprintf (stdout, "%s\n", str);
#endif
return;
}
uint32 l1, l2, l3, l4;
to4Int (l1, l2, l3, l4);
switch (style)
{
case kINLINE_UID:
sprintf (string, "INLINE_UID (0x%08X, 0x%08X, 0x%08X, 0x%08X)", l1, l2, l3, l4);
break;
case kDECLARE_UID:
sprintf (string, "DECLARE_UID (0x%08X, 0x%08X, 0x%08X, 0x%08X)", l1, l2, l3, l4);
break;
case kFUID:
sprintf (string, "FUID (0x%08X, 0x%08X, 0x%08X, 0x%08X)", l1, l2, l3, l4);
break;
case kCLASS_UID:
default:
sprintf (string, "DECLARE_CLASS_IID (Interface, 0x%08X, 0x%08X, 0x%08X, 0x%08X)", l1,
l2, l3, l4);
break;
}
}
//------------------------------------------------------------------------
// helpers
//------------------------------------------------------------------------
static uint32 makeLong (uint8 b1, uint8 b2, uint8 b3, uint8 b4)
{
return (uint32 (b1) << 24) | (uint32 (b2) << 16) | (uint32 (b3) << 8) | uint32 (b4);
}
//------------------------------------------------------------------------
static void toString8 (char8* string, const char* data, int32 i1, int32 i2)
{
*string = 0;
for (int32 i = i1; i < i2; i++)
{
char8 s[3];
sprintf (s, "%02X", (uint8)data[i]);
strcat (string, s);
}
}
//------------------------------------------------------------------------
static void fromString8 (const char8* string, char* data, int32 i1, int32 i2)
{
for (int32 i = i1; i < i2; i++)
{
char8 s[3];
s[0] = *string++;
s[1] = *string++;
s[2] = 0;
int32 d = 0;
sscanf (s, "%2x", &d);
data[i] = (char)d;
}
}
//------------------------------------------------------------------------
} // namespace Steinberg
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