How to set up the FMOD audio library in Qt Creator for Android

jsulm

@8Observer8 said in How to set up the FMOD audio library in Qt Creator for Android:

LIBS += -L"E:/Libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod.dll"

This is wrong. DLL files are used at runtime. To link your application you need LIB files. In this case it should be:

LIBS += -L"E:/Libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod.lib"

8Observer8 · LIBS += -L"E:/Libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod.dll"

This is a solution for the absolute path:

INCLUDEPATH += "E:/libs/fmod-2.2.21-mingw-64-bit/include"
LIBS += -L"E:/libs/fmod-2.2.21-mingw-64-bit/lib/x64/"
LIBS += -lfmod

Andrew helped me here:

Looks like you need to add the library path like so: -L"E:\Libs\fmod-2.2.21-mingw-64-bit\lib\x64" And instead of specifying the full path to fmod.dll on your command line (“E:\Libs\fmod-2.2.21-mingw-64-bit\lib\x64\fmod.dll”) you should use -lfmod instead.

But I need a relative path and I try it:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64
LIBS += -lfmod

But I have this error:

It can be solved by copying fmod.dll to the Debug folder:

@jsulm said in How to set up the FMOD audio library in Qt Creator for Android:

This is wrong. DLL files are used at runtime. To link your application you need LIB files.

But where will I find fmod.lib? There is no such file in the lib/x64 folder:

I tried to use fmod_vc.lib instead of fmod.lib:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod_vc.lib

But I have this error:

I try to use fmod with relative paths. I created the libs folder in my project folder. I don't want to copy fmod.dll to the Debug folder:

jsulm

@8Observer8 said in How to set up the FMOD audio library in Qt Creator for Android:

But where I will find fmod.lib. There is no such file in the lib folder

I guess what you have is pre-build release. You need a development package, don't know where you can get it from. Maybe https://www.fmod.com/docs/2.00/api/platforms-win.html helps.

8Observer8

@jsulm said in How to set up the FMOD audio library in Qt Creator for Android:

Maybe https://www.fmod.com/docs/2.00/api/platforms-win.html helps.

Unfortunately, there is no new information for me here:

The C API of the supplied libraries are compatible with MinGW (C++ ABI not supported). The 64 bit dll can be linked directly. You will need to use the import library libfmod.a and libfmodstudio.a in order to link the 32 bit dlls.
Yes, I see it. There is libfmod.a in the x86 folder and there is no it in the x64 folder. This information that The 64 bit dll can be linked directly works for a relative path (even without copying fmod.dll to the Debug folder)

INCLUDEPATH += "E:/libs/fmod-2.2.21-mingw-64-bit/include"
LIBS += -L"E:/libs/fmod-2.2.21-mingw-64-bit/lib/x64/"
LIBS += -lfmod

But when I try to change the absolute set up path to the relative path:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64
LIBS += -lfmod

I have this error:

It requires to copy 'fmod.dll' to the Debug folder.

FMOD Core Engine library

/api/core/lib/$ARCH/fmod_vc.lib - Release binary for production code (requires fmod.dll at runtime).

/api/core/lib/$ARCH/fmodL_vc.lib - Release binary with logging enabled for development (requires fmodL.dll at runtime).

Yes, it is true. It is really requires fmod.dll at runtime I tried to use fmod_vc.lib:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod_vc.lib

It works after copying fmod.dll to the Debug folder:

It seams like I cannot use the relative set up path without manual copying of fmod.dll to the Debug folder:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64
LIBS += -lfmod

But why I don't need to copy fmod.dll to the Debug folder when I set up FMOD using the absolute set up path:

INCLUDEPATH += "E:/libs/fmod-2.2.21-mingw-64-bit/include"
LIBS += -L"E:/libs/fmod-2.2.21-mingw-64-bit/lib/x64/"
LIBS += -lfmod

8Observer8

This is my simple project for Qt6 MinGW 64-bit that plays the OGG audio file on Windows: play-audio-from-resources-fmod-qt6-cpp.zip (2.77 MB) You can download it and experiment with the relative set up file. There is the libs folder with FMOD 2.2.21 inside of the project folder. I want to run it without manual copying of fmod.dll to the Debug folder. You can create the libs folder on your hard drive and copy my contains of 'libs' folder to it to check that absolute set up path doesn't require manual copying of fmod.dll to the Debug folder. You should to uncomment the absolute set up path and comment the relative path (don't forget to change a name of hard drive):

play-audio-from-resources-fmod-qt6-cpp.pro:

QT += core gui widgets

CONFIG += c++17

# The absolute set up FMOD path
# Works without manual copying of fmod.dll to the Debug folder
# INCLUDEPATH += "E:/libs/fmod-2.2.21-mingw-64-bit/include"
# LIBS += -L"E:/libs/fmod-2.2.21-mingw-64-bit/lib/x64/"
# LIBS += -lfmod

# The relative set up FMOD path
# Requires manual copying of fmod.dll to the Debug folder
INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64
LIBS += -lfmod

# Using fmod_vc.lib
# Requires manual copying of fmod.dll to the Debug folder
# INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
# LIBS += $$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64/fmod_vc.lib

# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# Disables all the APIs deprecated before Qt 6.0.0
DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000

SOURCES += \
    main.cpp \
    widget.cpp

HEADERS += \
    widget.h

RESOURCES += \
    assets.qrc

widget.h

#ifndef WIDGET_H
#define WIDGET_H

#include <QtWidgets/QWidget>
#include <fmod.h>

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

private:
    FMOD_SYSTEM *m_system;
    FMOD_SOUND *m_sound;
};

#endif // WIDGET_H

widget.cpp

#include "widget.h"

#include <QtCore/QByteArray>
#include <QtCore/QFile>
#include <QtCore/QString>

Widget::Widget(QWidget *parent)
    : QWidget(parent)
{
    FMOD_System_Create(&m_system, FMOD_VERSION);
    FMOD_System_Init(m_system, 32, FMOD_INIT_NORMAL, 0);

    QString soundPath(":/assets/audio/overworld.ogg");
    QFile f(soundPath);
    if (!f.open(QIODevice::OpenModeFlag::ReadOnly))
    {
        qDebug() << "Faild to open the file: " << soundPath;
        return;
    }
    QByteArray soundData = f.readAll();
    f.close();

    FMOD_CREATESOUNDEXINFO* exinfo = new FMOD_CREATESOUNDEXINFO();
    exinfo->length = static_cast<unsigned int>(soundData.length());
    exinfo->cbsize = sizeof(FMOD_CREATESOUNDEXINFO);
    FMOD_System_CreateSound(m_system, soundData.data(), FMOD_OPENMEMORY, exinfo, &m_sound);

    FMOD_Sound_SetMode(m_sound, FMOD_LOOP_OFF);

    FMOD_System_PlaySound(m_system, m_sound, 0, false, 0);
}

Widget::~Widget()
{
}

main.cpp

#include "widget.h"

#include <QtWidgets/QApplication>

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    Widget w;
    w.show();
    return app.exec();
}

assets.qrc

<RCC>
    <qresource prefix="/">
        <file>assets/audio/overworld.ogg</file>
    </qresource>
</RCC>

jsulm

@8Observer8 If you want to run your app outside of QtCreator you first have to deploy it, so it contains all needed libraries.

8Observer8

@jsulm I want to run my app inside of Qt Creator with relative set up path (with using $$PWD instead of "E:/) because I want to distribute my examples with included libs. For example, I can post my examples (ZIPs) on the forums and people can download it and run without set up of FMOD and so on. And without manual copying of fmod.dlll to the Debug folder. For a while the "E:/ method (absolute path) works without manual copying of fmod.dll but the $$PWD method (relative path) requires to copy fmod.dll to the Debug folder. The distribution of EXE is very clear for me. Yes, of course I should distribute fmod.dll, Qt6Core.dll and so on with EXE. My question about distribution of Qt project with libs to run it very quickly in Qt Creator on another computer.

The $$PWD method (relative path) allows to include all libs to a project. I should works like this - everyone can download the project and run it without downloading requires libs and without manual copying of fmod.dll to the Debug folder:

jsulm

@8Observer8 It looks like the library is part of your project. You could use https://wiki.qt.io/SUBDIRS_-_handling_dependencies project and make your main project depend on the library sub-project. In that case the libs should be copied during the build.

8Observer8

@jsulm said in How to set up the FMOD audio library in Qt Creator for Android:

It looks like the library is part of your project.

I don't have a source code of the proprietary FMOD library. I have only two folders for this library in my project folder: include:

and libs:

I think SUBDIRS cannot copy fmod.dll from the libs/fmod-2.2.21-mingw-64-bit/lib/x64 folder to the Debug folder or can it?

8Observer8

I solved the problem with the relative paths to the library! I just added -L before $$PWD like this:

INCLUDEPATH += $$PWD/libs/fmod-2.2.21-mingw-64-bit/include
LIBS += -L$$PWD/libs/fmod-2.2.21-mingw-64-bit/lib/x64
LIBS += -lfmod

Now you can download the next example and run it in Qt Creator (with MinGW 64) without necessary to set up FMOD or changing the paths in pro-file: play-audio-from-resources-fmod-qt6-cpp.zip (2.51 MB)