DistrhoUtils.cpp

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/*
 * DISTRHO Plugin Framework (DPF)
 * Copyright (C) 2012-2021 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_IS_STANDALONE
# error Wrong build configuration
#endif
 
#include "../extra/String.hpp"
#include "../DistrhoStandaloneUtils.hpp"
 
#ifdef DISTRHO_OS_WINDOWS
# include <windows.h>
#else
# ifndef STATIC_BUILD
#  include <dlfcn.h>
# endif
# include <limits.h>
# include <stdlib.h>
#endif
 
#if defined(DISTRHO_OS_WINDOWS) && !defined(STATIC_BUILD) && !DISTRHO_IS_STANDALONE
static HINSTANCE hInstance = nullptr;
 
DISTRHO_PLUGIN_EXPORT
BOOL WINAPI DllMain(HINSTANCE hInst, DWORD reason, LPVOID)
{
    if (reason == DLL_PROCESS_ATTACH)
        hInstance = hInst;
    return 1;
}
#endif
 
START_NAMESPACE_DISTRHO
 
// -----------------------------------------------------------------------
 
const char* getBinaryFilename()
{
    static String filename;
 
#ifndef STATIC_BUILD
    if (filename.isNotEmpty())
        return filename;
 
# ifdef DISTRHO_OS_WINDOWS
#  if DISTRHO_IS_STANDALONE
    constexpr const HINSTANCE hInstance = nullptr;
#  endif
    CHAR filenameBuf[MAX_PATH];
    filenameBuf[0] = '\0';
    GetModuleFileNameA(hInstance, filenameBuf, sizeof(filenameBuf));
    filename = filenameBuf;
# else
    Dl_info info;
    dladdr((void*)getBinaryFilename, &info);
    char filenameBuf[PATH_MAX];
    filename = realpath(info.dli_fname, filenameBuf);
# endif
#endif
 
    return filename;
}
 
const char* getPluginFormatName() noexcept
{
#if defined(DISTRHO_PLUGIN_TARGET_CARLA)
    return "Carla";
#elif defined(DISTRHO_PLUGIN_TARGET_JACK)
# ifdef DISTRHO_OS_WASM
    return "Wasm/Standalone";
# else
    return "JACK/Standalone";
# endif
#elif defined(DISTRHO_PLUGIN_TARGET_LADSPA)
    return "LADSPA";
#elif defined(DISTRHO_PLUGIN_TARGET_DSSI)
    return "DSSI";
#elif defined(DISTRHO_PLUGIN_TARGET_LV2)
    return "LV2";
#elif defined(DISTRHO_PLUGIN_TARGET_VST2)
    return "VST2";
#elif defined(DISTRHO_PLUGIN_TARGET_VST3)
    return "VST3";
#else
    return "Unknown";
#endif
}
 
const char* getResourcePath(const char* const bundlePath) noexcept
{
    DISTRHO_SAFE_ASSERT_RETURN(bundlePath != nullptr, nullptr);
 
#if defined(DISTRHO_PLUGIN_TARGET_JACK) || defined(DISTRHO_PLUGIN_TARGET_VST2)
    static String resourcePath;
 
    if (resourcePath.isEmpty())
    {
        resourcePath = bundlePath;
# ifdef DISTRHO_OS_MAC
        resourcePath += "/Contents/Resources";
# else
        resourcePath += DISTRHO_OS_SEP_STR "resources";
# endif
    }
 
    return resourcePath.buffer();
#elif defined(DISTRHO_PLUGIN_TARGET_LV2)
    static String resourcePath;
 
    if (resourcePath.isEmpty())
    {
        resourcePath = bundlePath;
        resourcePath += DISTRHO_OS_SEP_STR "resources";
    }
 
    return resourcePath.buffer();
#elif defined(DISTRHO_PLUGIN_TARGET_VST3)
    static String resourcePath;
 
    if (resourcePath.isEmpty())
    {
        resourcePath = bundlePath;
        resourcePath += "/Contents/Resources";
    }
 
    return resourcePath.buffer();
#endif
 
    return nullptr;
}
 
#ifndef DISTRHO_PLUGIN_TARGET_JACK
// all these are null for non-standalone targets
bool isUsingNativeAudio() noexcept { return false; }
bool supportsAudioInput() { return false; }
bool supportsBufferSizeChanges() { return false; }
bool supportsMIDI() { return false; }
bool isAudioInputEnabled() { return false; }
bool isMIDIEnabled() { return false; }
uint getBufferSize() { return 0; }
bool requestAudioInput() { return false; }
bool requestBufferSizeChange(uint) { return false; }
bool requestMIDI() { return false; }
#endif
 
// -----------------------------------------------------------------------
 
END_NAMESPACE_DISTRHO