macos - 将Qt项目移植到Mac时没有声音和其他问题

Question

我正在尝试将此项目移植到Mac OSX 10.8.5，它最初是在Windows Vista和Windows 7上设计和测试的，但我严格遵守Qt框架。

https://github.com/wiseguy12851/AlarmClock

在使用clang编译器使用Qt Creator 5.1.1进行编译之后，我在 Debug模式下运行了该项目，并在应用程序启动之前遇到了许多奇怪的错误。

objc[3522]: Class AVFCaptureFramesDelegate is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class AVFMediaRecorderDelegate is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class AVFCameraSessionObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class AVFMediaPlayerSessionObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfmediaplayer.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfmediaplayer_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class TransparentQTMovieView is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class HiddenQTMovieView is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.
objc[3522]: Class QTMovieObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.

启动应用程序时，我注意到一些对齐或布局方式上的怪异现象，这很正常，通常可以轻松修复，但是在测试声音输出时却没有任何声音。然后，我去调试，看看是否调用了声音方法，发现它是声音，但没有任何声音。

调试在启动之前也会发出大量错误和/或警告消息，以下是启动前恰好在一次调试中的所有消息。

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Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtmultimedia/src/plugins/audiocapture/.obj/debug-shared/moc_audioinputselector.o" - no debug information available for ".moc/debug-shared/moc_audioinputselector.cpp".
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtmultimedia/src/plugins/audiocapture/.obj/debug-shared/moc_audiocaptureservice.o" - no debug information available for ".moc/debug-shared/moc_audiocaptureservice.cpp".
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtmultimedia/src/plugins/audiocapture/.obj/debug-shared/moc_audiocaptureserviceplugin.o" - no debug information available for ".moc/debug-shared/moc_audiocaptureserviceplugin.cpp".
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtmultimedia/src/plugins/audiocapture/.obj/debug-shared/moc_audiocapturesession.o" - no debug information available for ".moc/debug-shared/moc_audiocapturesession.cpp".
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtmultimedia/src/plugins/audiocapture/.obj/debug-shared/moc_audiocaptureprobecontrol.o" - no debug information available for ".moc/debug-shared/moc_audiocaptureprobecontrol.cpp".
objc[3570]: Class AVFCaptureFramesDelegate is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class AVFMediaRecorderDelegate is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class AVFCameraSessionObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfcamera_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class AVFMediaPlayerSessionObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfmediaplayer.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqavfmediaplayer_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class TransparentQTMovieView is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class HiddenQTMovieView is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.
objc[3570]: Class QTMovieObserver is implemented in both /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine.dylib and /Users/***/Qt5.1.1/5.1.1/clang_64/plugins/mediaservice/libqqt7engine_debug.dylib. One of the two will be used. Which one is undefined.
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtsvg/src/plugins/iconengines/svgiconengine/.obj/debug-shared/main.o" - no debug information available for "main.cpp".
Could not find object file "/Users/bld.qt/bamboo-agent-home/xml-data/build-dir/DQTC-LGPLRELEASEBUILD510-OSX106/qt5_workdir/w/s/qtsvg/src/plugins/iconengines/svgiconengine/.obj/debug-shared/qsvgiconengine.o" - no debug information available for "qsvgiconengine.cpp".

我一生都无法弄清楚，所有代码引用都可以通过github链接完成。

.pro文件下面

cache()

#-------------------------------------------------
#
# Project created by QtCreator 2013-10-28T05:20:59
#
#-------------------------------------------------

QT       += core gui multimedia

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = AlarmClock
TEMPLATE = app

SOURCES += main.cpp\
        windowmain.cpp

HEADERS  += windowmain.h

FORMS    += windowmain.ui

RESOURCES += \
    resources.qrc

OTHER_FILES += \
    Alarm.rc

win32:RC_FILE += Alarm.rc

这是我要尝试的最低要求

.h文件:

#include <QMediaPlayer>
...
QMediaPlayer* player;

.cpp文件:

player(new QMediaPlayer(this)),
...
player->setMedia(QUrl("qrc:///sound"));
...
player->play();

应该指出的是，它可以完美地在Windows上运行，我认为Qt弄乱了我Mac上的编译

Answer 1

问题出在错误消息上，如果仔细阅读，它并不是很奇怪。只需走第一行并比较指出以下内容的路径:-

Class AVFCaptureFramesDelegate is implemented in both...

libqavfcamera.dylib and libqavfcamera_debug.dylib

因此，您将链接的库的发行版和调试版混合在一起，这很可能会解决您看到的未对齐问题。解决这个问题，错误将消失，您的声音将恢复。