diff options
Diffstat (limited to 'indra/media_plugins/webkit/windows_volume_catcher.cpp')
| -rw-r--r-- | indra/media_plugins/webkit/windows_volume_catcher.cpp | 52 |
1 files changed, 41 insertions, 11 deletions
diff --git a/indra/media_plugins/webkit/windows_volume_catcher.cpp b/indra/media_plugins/webkit/windows_volume_catcher.cpp index 5fb84756ee..957704da47 100644 --- a/indra/media_plugins/webkit/windows_volume_catcher.cpp +++ b/indra/media_plugins/webkit/windows_volume_catcher.cpp @@ -48,18 +48,37 @@ private: set_volume_func_t mSetVolumeFunc; set_mute_func_t mSetMuteFunc; + // tests if running on Vista, 7, 8 + once in CTOR + bool isWindowsVistaOrHigher(); + F32 mVolume; F32 mPan; + bool mSystemIsVistaOrHigher; }; + +bool VolumeCatcherImpl::isWindowsVistaOrHigher() +{ + OSVERSIONINFO osvi; + ZeroMemory(&osvi, sizeof(OSVERSIONINFO)); + osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + GetVersionEx(&osvi); + return osvi.dwMajorVersion >= 6; +} + VolumeCatcherImpl::VolumeCatcherImpl() -: mVolume(1.0f), // default volume is max - mPan(0.f) // default pan is centered +: mVolume(1.0f), // default volume is max + mPan(0.f) // default pan is centered { - HMODULE handle = ::LoadLibrary(L"winmm.dll"); - if(handle) + mSystemIsVistaOrHigher = isWindowsVistaOrHigher(); + + if ( mSystemIsVistaOrHigher ) { - mSetVolumeFunc = (set_volume_func_t)::GetProcAddress(handle, "setPluginVolume"); - mSetMuteFunc = (set_mute_func_t)::GetProcAddress(handle, "setPluginMute"); + HMODULE handle = ::LoadLibrary(L"winmm.dll"); + if(handle) + { + mSetVolumeFunc = (set_volume_func_t)::GetProcAddress(handle, "setPluginVolume"); + mSetMuteFunc = (set_mute_func_t)::GetProcAddress(handle, "setPluginMute"); + } } } @@ -67,18 +86,29 @@ VolumeCatcherImpl::~VolumeCatcherImpl() { } - void VolumeCatcherImpl::setVolume(F32 volume) { mVolume = volume; - if (mSetMuteFunc) + if ( mSystemIsVistaOrHigher ) { - mSetMuteFunc(volume == 0.f); + // set both left/right to same volume + // TODO: use pan value to set independently + DWORD left_channel = (DWORD)(mVolume * 65535.0f); + DWORD right_channel = (DWORD)(mVolume * 65535.0f); + DWORD hw_volume = left_channel << 16 | right_channel; + ::waveOutSetVolume(NULL, hw_volume); } - if (mSetVolumeFunc) + else { - mSetVolumeFunc(mVolume); + if (mSetMuteFunc) + { + mSetMuteFunc(volume == 0.f); + } + if (mSetVolumeFunc) + { + mSetVolumeFunc(mVolume); + } } } |