diff options
Diffstat (limited to 'indra/media_plugins/webkit/windows_volume_catcher.cpp')
-rwxr-xr-x | indra/media_plugins/webkit/windows_volume_catcher.cpp | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/indra/media_plugins/webkit/windows_volume_catcher.cpp b/indra/media_plugins/webkit/windows_volume_catcher.cpp deleted file mode 100755 index 0cfb810906..0000000000 --- a/indra/media_plugins/webkit/windows_volume_catcher.cpp +++ /dev/null @@ -1,147 +0,0 @@ -/** - * @file windows_volume_catcher.cpp - * @brief A Windows implementation of volume level control of all audio channels opened by a process. - * - * @cond - * $LicenseInfo:firstyear=2010&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA - * $/LicenseInfo$ - * @endcond - */ - -#include "volume_catcher.h" -#include <windows.h> -#include "llsingleton.h" -class VolumeCatcherImpl : public LLSingleton<VolumeCatcherImpl> -{ -friend LLSingleton<VolumeCatcherImpl>; -public: - - void setVolume(F32 volume); - void setPan(F32 pan); - -private: - // This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance. - VolumeCatcherImpl(); - ~VolumeCatcherImpl(); - - typedef void (WINAPI *set_volume_func_t)(F32); - typedef void (WINAPI *set_mute_func_t)(bool); - - 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 -{ - mSystemIsVistaOrHigher = isWindowsVistaOrHigher(); - - if ( ! mSystemIsVistaOrHigher ) - { - HMODULE handle = ::LoadLibrary(L"winmm.dll"); - if(handle) - { - mSetVolumeFunc = (set_volume_func_t)::GetProcAddress(handle, "setPluginVolume"); - mSetMuteFunc = (set_mute_func_t)::GetProcAddress(handle, "setPluginMute"); - } - } -} - -VolumeCatcherImpl::~VolumeCatcherImpl() -{ -} - -void VolumeCatcherImpl::setVolume(F32 volume) -{ - mVolume = volume; - - if ( mSystemIsVistaOrHigher ) - { - // 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); - } - else - { - if (mSetMuteFunc) - { - mSetMuteFunc(volume == 0.f); - } - if (mSetVolumeFunc) - { - mSetVolumeFunc(mVolume); - } - } -} - -void VolumeCatcherImpl::setPan(F32 pan) -{ // remember pan for calculating individual channel levels later - mPan = pan; -} - -///////////////////////////////////////////////////// - -VolumeCatcher::VolumeCatcher() -{ - pimpl = VolumeCatcherImpl::getInstance(); -} - -VolumeCatcher::~VolumeCatcher() -{ - // Let the instance persist until exit. -} - -void VolumeCatcher::setVolume(F32 volume) -{ - pimpl->setVolume(volume); -} - -void VolumeCatcher::setPan(F32 pan) -{ - pimpl->setPan(pan); -} - -void VolumeCatcher::pump() -{ - // No periodic tasks are necessary for this implementation. -} - - |