diff options
| -rw-r--r-- | src/multimedia/audio/qaudiosystemplugin.cpp | 23 |
1 files changed, 7 insertions, 16 deletions
diff --git a/src/multimedia/audio/qaudiosystemplugin.cpp b/src/multimedia/audio/qaudiosystemplugin.cpp index 61681b6d6..438b8b7bb 100644 --- a/src/multimedia/audio/qaudiosystemplugin.cpp +++ b/src/multimedia/audio/qaudiosystemplugin.cpp @@ -77,24 +77,15 @@ QAudioSystemPluginExtension::~QAudioSystemPluginExtension() \sa QAbstractAudioDeviceInfo, QAbstractAudioOutput, QAbstractAudioInput - Qt supports win32, linux(alsa) and OS X standard (builtin to the - QtMultimedia library at compile time). + Qt comes with plugins for Windows (WinMM and WASAPI), Linux (ALSA and PulseAudio), OS X / iOS + (CoreAudio), Android (OpenSL ES) and QNX. - You can support other backends other than these predefined ones by - creating a plugin subclassing QAudioSystemPlugin, QAbstractAudioDeviceInfo, - QAbstractAudioOutput and QAbstractAudioInput. - - - The builtin backend will only be compiled into the library if the dependencies - are installed. eg. alsa-devel package installed for linux. - - If the builtin backend is not compiled into the QtMultimedia library and - no audio plugins are available a fallback dummy backend will be used. + If no audio plugins are available, a fallback dummy backend will be used. This should print out warnings if this is the case when you try and use QAudioInput - or QAudioOutput. To fix this problem reconfigure Qt with the required - dependencies (e.g. alsa-devel package) available or create your own plugin with a default - key to always override the dummy fallback. The easiest way to determine - if you have only a dummy backend is to get a list of available audio devices. + or QAudioOutput. To fix this problem, make sure the dependencies for the Qt plugins are + installed on the system and reconfigure Qt (e.g. alsa-devel package on Linux), or create your + own plugin with a default key to always override the dummy fallback. The easiest way to + determine if you have only a dummy backend is to get a list of available audio devices. QAudioDeviceInfo::availableDevices(QAudio::AudioOutput).size() = 0 (dummy backend) */ |