16cd4c5c4b
This commit deletes all indra/media_plugins and copied one-on-one the indra/plugins directory from my (imprudence) statemachine branch (which contains the AIFilePicker patch). git shows this as a lot of 'renamed' files because originally it was a rename. However, there are a lot of changes as well: it's both an upgrade to a newer plugin system (changes by LL) as well as an upgrade to my refactored plugin system with a file picker as plugin. Since this commit is a one-on-one copy, it disregards any changes that were in Singularity and not in imprudence in indra/media_plugins however. I will add those back in the next commit.
127 lines
3.2 KiB
C++
127 lines
3.2 KiB
C++
/**
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* @file windows_volume_catcher.cpp
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* @brief A Windows implementation of volume level control of all audio channels opened by a process.
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*
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* @cond
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* $LicenseInfo:firstyear=2010&license=viewergpl$
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*
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* Copyright (c) 2010, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlife.com/developers/opensource/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlife.com/developers/opensource/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*
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* @endcond
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*/
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#include "volume_catcher.h"
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# define WIN32_LEAN_AND_MEAN
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# include <winsock2.h>
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#include <windows.h>
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#include "llmemory.h"
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class VolumeCatcherImpl : public LLSingleton<VolumeCatcherImpl>
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{
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friend LLSingleton<VolumeCatcherImpl>;
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public:
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void setVolume(F32 volume);
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void setPan(F32 pan);
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private:
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// This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance.
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VolumeCatcherImpl();
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~VolumeCatcherImpl();
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typedef void (WINAPI *set_volume_func_t)(F32);
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typedef void (WINAPI *set_mute_func_t)(bool);
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set_volume_func_t mSetVolumeFunc;
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set_mute_func_t mSetMuteFunc;
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F32 mVolume;
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F32 mPan;
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};
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VolumeCatcherImpl::VolumeCatcherImpl()
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: mVolume(1.0f), // default volume is max
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mPan(0.f) // default pan is centered
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{
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HMODULE handle = ::LoadLibrary(L"winmm.dll");
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if(handle)
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{
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mSetVolumeFunc = (set_volume_func_t)::GetProcAddress(handle, "setPluginVolume");
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mSetMuteFunc = (set_mute_func_t)::GetProcAddress(handle, "setPluginMute");
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}
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}
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VolumeCatcherImpl::~VolumeCatcherImpl()
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{
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}
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void VolumeCatcherImpl::setVolume(F32 volume)
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{
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mVolume = volume;
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if (mSetMuteFunc)
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{
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mSetMuteFunc(volume == 0.f);
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}
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if (mSetVolumeFunc)
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{
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mSetVolumeFunc(mVolume);
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}
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}
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void VolumeCatcherImpl::setPan(F32 pan)
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{ // remember pan for calculating individual channel levels later
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mPan = pan;
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}
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/////////////////////////////////////////////////////
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VolumeCatcher::VolumeCatcher()
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{
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pimpl = VolumeCatcherImpl::getInstance();
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}
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VolumeCatcher::~VolumeCatcher()
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{
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// Let the instance persist until exit.
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}
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void VolumeCatcher::setVolume(F32 volume)
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{
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pimpl->setVolume(volume);
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}
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void VolumeCatcher::setPan(F32 pan)
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{
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pimpl->setPan(pan);
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}
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void VolumeCatcher::pump()
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{
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// No periodic tasks are necessary for this implementation.
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}
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