From 1b68f71348ecf3983b76b40d7940da8377f049b7 Mon Sep 17 00:00:00 2001 From: Andrey Lihatskiy Date: Mon, 29 Apr 2024 07:43:28 +0300 Subject: #824 Process source files in bulk: replace tabs with spaces, convert CRLF to LF, and trim trailing whitespaces as needed --- indra/media_plugins/cef/mac_volume_catcher.cpp | 322 ++++++++++++------------- 1 file changed, 161 insertions(+), 161 deletions(-) (limited to 'indra/media_plugins/cef/mac_volume_catcher.cpp') diff --git a/indra/media_plugins/cef/mac_volume_catcher.cpp b/indra/media_plugins/cef/mac_volume_catcher.cpp index dddb9c2077..32251c0999 100644 --- a/indra/media_plugins/cef/mac_volume_catcher.cpp +++ b/indra/media_plugins/cef/mac_volume_catcher.cpp @@ -1,4 +1,4 @@ -/** +/** * @file mac_volume_catcher.cpp * @brief A Mac OS X specific hack to control the volume level of all audio channels opened by a process. * @@ -11,26 +11,26 @@ * 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 */ /************************************************************************************************************** - This code works by using CaptureComponent to capture the "Default Output" audio component - (kAudioUnitType_Output/kAudioUnitSubType_DefaultOutput) and delegating all calls to the original component. - It does this just to keep track of all instances of the default output component, so that it can set the - kHALOutputParam_Volume parameter on all of them to adjust the output volume. + This code works by using CaptureComponent to capture the "Default Output" audio component + (kAudioUnitType_Output/kAudioUnitSubType_DefaultOutput) and delegating all calls to the original component. + It does this just to keep track of all instances of the default output component, so that it can set the + kHALOutputParam_Volume parameter on all of them to adjust the output volume. **************************************************************************************************************/ #include "volume_catcher.h" @@ -49,35 +49,35 @@ class VolumeCatcherImpl { public: - void setVolume(F32 volume); - void setPan(F32 pan); - - void setInstanceVolume(VolumeCatcherStorage *instance); - - std::list mComponentInstances; - Component mOriginalDefaultOutput; - Component mVolumeAdjuster; - - static VolumeCatcherImpl *getInstance(); + void setVolume(F32 volume); + void setPan(F32 pan); + + void setInstanceVolume(VolumeCatcherStorage *instance); + + std::list mComponentInstances; + Component mOriginalDefaultOutput; + Component mVolumeAdjuster; + + static VolumeCatcherImpl *getInstance(); private: - // This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance. - VolumeCatcherImpl(); - static VolumeCatcherImpl *sInstance; - - // The singlar instance of this class is expected to last until the process exits. - // To ensure this, we declare the destructor here but never define it, so any code which attempts to destroy the instance will not link. - ~VolumeCatcherImpl(); - - F32 mVolume; - F32 mPan; + // This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance. + VolumeCatcherImpl(); + static VolumeCatcherImpl *sInstance; + + // The singlar instance of this class is expected to last until the process exits. + // To ensure this, we declare the destructor here but never define it, so any code which attempts to destroy the instance will not link. + ~VolumeCatcherImpl(); + + F32 mVolume; + F32 mPan; }; VolumeCatcherImpl *VolumeCatcherImpl::sInstance = NULL;; struct VolumeCatcherStorage { - ComponentInstance self; - ComponentInstance delegate; + ComponentInstance self; + ComponentInstance delegate; }; static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage); @@ -86,188 +86,188 @@ static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *stor VolumeCatcherImpl *VolumeCatcherImpl::getInstance() { - if(!sInstance) - { - sInstance = new VolumeCatcherImpl; - } - - return sInstance; + if(!sInstance) + { + sInstance = new VolumeCatcherImpl; + } + + return sInstance; } VolumeCatcherImpl::VolumeCatcherImpl() { - mVolume = 1.0; // default to full volume - mPan = 0.0; // and center pan - - ComponentDescription desc; - desc.componentType = kAudioUnitType_Output; - desc.componentSubType = kAudioUnitSubType_DefaultOutput; - desc.componentManufacturer = kAudioUnitManufacturer_Apple; - desc.componentFlags = 0; - desc.componentFlagsMask = 0; - - // Find the original default output component - mOriginalDefaultOutput = FindNextComponent(NULL, &desc); - - // Register our own output component with the same parameters - mVolumeAdjuster = RegisterComponent(&desc, NewComponentRoutineUPP(volume_catcher_component_entry), 0, NULL, NULL, NULL); - - // Capture the original component, so we always get found instead. - CaptureComponent(mOriginalDefaultOutput, mVolumeAdjuster); + mVolume = 1.0; // default to full volume + mPan = 0.0; // and center pan + + ComponentDescription desc; + desc.componentType = kAudioUnitType_Output; + desc.componentSubType = kAudioUnitSubType_DefaultOutput; + desc.componentManufacturer = kAudioUnitManufacturer_Apple; + desc.componentFlags = 0; + desc.componentFlagsMask = 0; + + // Find the original default output component + mOriginalDefaultOutput = FindNextComponent(NULL, &desc); + + // Register our own output component with the same parameters + mVolumeAdjuster = RegisterComponent(&desc, NewComponentRoutineUPP(volume_catcher_component_entry), 0, NULL, NULL, NULL); + + // Capture the original component, so we always get found instead. + CaptureComponent(mOriginalDefaultOutput, mVolumeAdjuster); } static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage) { - ComponentResult result = badComponentSelector; - VolumeCatcherStorage *storage = (VolumeCatcherStorage*)componentStorage; - - switch(cp->what) - { - case kComponentOpenSelect: -// std::cerr << "kComponentOpenSelect" << std::endl; - result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_open, uppCallComponentOpenProcInfo); - break; - - case kComponentCloseSelect: -// std::cerr << "kComponentCloseSelect" << std::endl; - result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_close, uppCallComponentCloseProcInfo); - // CallComponentFunctionWithStorageProcInfo - break; - - default: -// std::cerr << "Delegating selector: " << cp->what << " to component instance " << storage->delegate << std::endl; - result = DelegateComponentCall(cp, storage->delegate); - break; - } - - return result; + ComponentResult result = badComponentSelector; + VolumeCatcherStorage *storage = (VolumeCatcherStorage*)componentStorage; + + switch(cp->what) + { + case kComponentOpenSelect: +// std::cerr << "kComponentOpenSelect" << std::endl; + result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_open, uppCallComponentOpenProcInfo); + break; + + case kComponentCloseSelect: +// std::cerr << "kComponentCloseSelect" << std::endl; + result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_close, uppCallComponentCloseProcInfo); + // CallComponentFunctionWithStorageProcInfo + break; + + default: +// std::cerr << "Delegating selector: " << cp->what << " to component instance " << storage->delegate << std::endl; + result = DelegateComponentCall(cp, storage->delegate); + break; + } + + return result; } static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self) { - ComponentResult result = noErr; - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - - storage = new VolumeCatcherStorage; - - storage->self = self; - storage->delegate = NULL; - - result = OpenAComponent(impl->mOriginalDefaultOutput, &(storage->delegate)); - - if(result != noErr) - { -// std::cerr << "OpenAComponent result = " << result << ", component ref = " << storage->delegate << std::endl; - - // If we failed to open the delagate component, our open is going to fail. Clean things up. - delete storage; - } - else - { - // Success -- set up this component's storage - SetComponentInstanceStorage(self, (Handle)storage); - - // add this instance to the global list - impl->mComponentInstances.push_back(storage); - - // and set up the initial volume - impl->setInstanceVolume(storage); - } - - return result; + ComponentResult result = noErr; + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + + storage = new VolumeCatcherStorage; + + storage->self = self; + storage->delegate = NULL; + + result = OpenAComponent(impl->mOriginalDefaultOutput, &(storage->delegate)); + + if(result != noErr) + { +// std::cerr << "OpenAComponent result = " << result << ", component ref = " << storage->delegate << std::endl; + + // If we failed to open the delagate component, our open is going to fail. Clean things up. + delete storage; + } + else + { + // Success -- set up this component's storage + SetComponentInstanceStorage(self, (Handle)storage); + + // add this instance to the global list + impl->mComponentInstances.push_back(storage); + + // and set up the initial volume + impl->setInstanceVolume(storage); + } + + return result; } static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self) { - ComponentResult result = noErr; - - if(storage) - { - if(storage->delegate) - { - CloseComponent(storage->delegate); - storage->delegate = NULL; - } - - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mComponentInstances.remove(storage); - delete[] storage; - } - - return result; + ComponentResult result = noErr; + + if(storage) + { + if(storage->delegate) + { + CloseComponent(storage->delegate); + storage->delegate = NULL; + } + + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mComponentInstances.remove(storage); + delete[] storage; + } + + return result; } void VolumeCatcherImpl::setVolume(F32 volume) { - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mVolume = volume; - - // Iterate through all known instances, setting the volume on each. - for(std::list::iterator iter = mComponentInstances.begin(); iter != mComponentInstances.end(); ++iter) - { - impl->setInstanceVolume(*iter); - } + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mVolume = volume; + + // Iterate through all known instances, setting the volume on each. + for(std::list::iterator iter = mComponentInstances.begin(); iter != mComponentInstances.end(); ++iter) + { + impl->setInstanceVolume(*iter); + } } void VolumeCatcherImpl::setPan(F32 pan) { - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mPan = pan; - - // TODO: implement this. - // This will probably require adding a "panner" audio unit to the chain somehow. - // There's also a "3d mixer" component that we might be able to use... + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mPan = pan; + + // TODO: implement this. + // This will probably require adding a "panner" audio unit to the chain somehow. + // There's also a "3d mixer" component that we might be able to use... } void VolumeCatcherImpl::setInstanceVolume(VolumeCatcherStorage *instance) { -// std::cerr << "Setting volume on component instance: " << (instance->delegate) << " to " << mVolume << std::endl; - - OSStatus err = noErr; - - if(instance && instance->delegate) - { - err = AudioUnitSetParameter( - instance->delegate, - kHALOutputParam_Volume, - kAudioUnitScope_Global, - 0, - mVolume, - 0); - } - - if(err) - { -// std::cerr << " AudioUnitSetParameter returned " << err << std::endl; - } +// std::cerr << "Setting volume on component instance: " << (instance->delegate) << " to " << mVolume << std::endl; + + OSStatus err = noErr; + + if(instance && instance->delegate) + { + err = AudioUnitSetParameter( + instance->delegate, + kHALOutputParam_Volume, + kAudioUnitScope_Global, + 0, + mVolume, + 0); + } + + if(err) + { +// std::cerr << " AudioUnitSetParameter returned " << err << std::endl; + } } ///////////////////////////////////////////////////// VolumeCatcher::VolumeCatcher() { - pimpl = VolumeCatcherImpl::getInstance(); + pimpl = VolumeCatcherImpl::getInstance(); } VolumeCatcher::~VolumeCatcher() { - // Let the instance persist until exit. + // Let the instance persist until exit. } void VolumeCatcher::setVolume(F32 volume) { - pimpl->setVolume(volume); + pimpl->setVolume(volume); } void VolumeCatcher::setPan(F32 pan) { - pimpl->setPan(pan); + pimpl->setPan(pan); } void VolumeCatcher::pump() { - // No periodic tasks are necessary for this implementation. + // No periodic tasks are necessary for this implementation. } #if LL_DARWIN -- cgit v1.2.3 From e2e37cced861b98de8c1a7c9c0d3a50d2d90e433 Mon Sep 17 00:00:00 2001 From: Ansariel Date: Wed, 22 May 2024 21:25:21 +0200 Subject: Fix line endlings --- indra/media_plugins/cef/mac_volume_catcher.cpp | 550 ++++++++++++------------- 1 file changed, 275 insertions(+), 275 deletions(-) (limited to 'indra/media_plugins/cef/mac_volume_catcher.cpp') diff --git a/indra/media_plugins/cef/mac_volume_catcher.cpp b/indra/media_plugins/cef/mac_volume_catcher.cpp index 26b1977e55..54ebbfe1c7 100644 --- a/indra/media_plugins/cef/mac_volume_catcher.cpp +++ b/indra/media_plugins/cef/mac_volume_catcher.cpp @@ -1,275 +1,275 @@ -/** - * @file mac_volume_catcher.cpp - * @brief A macOS specific hack to control the volume level 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 - */ - -/************************************************************************************************************** - This code works by using CaptureComponent to capture the "Default Output" audio component - (kAudioUnitType_Output/kAudioUnitSubType_DefaultOutput) and delegating all calls to the original component. - It does this just to keep track of all instances of the default output component, so that it can set the - kHALOutputParam_Volume parameter on all of them to adjust the output volume. -**************************************************************************************************************/ - -#include "volume_catcher.h" - -#include -#include -#include - -#if LL_DARWIN -#pragma GCC diagnostic ignored "-Wdeprecated-declarations" -#endif - -struct VolumeCatcherStorage; - -class VolumeCatcherImpl -{ -public: - - void setVolume(F32 volume); - void setPan(F32 pan); - - void setInstanceVolume(VolumeCatcherStorage *instance); - - std::list mComponentInstances; - Component mOriginalDefaultOutput; - Component mVolumeAdjuster; - - static VolumeCatcherImpl *getInstance(); -private: - // This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance. - VolumeCatcherImpl(); - static VolumeCatcherImpl *sInstance; - - // The singlar instance of this class is expected to last until the process exits. - // To ensure this, we declare the destructor here but never define it, so any code which attempts to destroy the instance will not link. - ~VolumeCatcherImpl(); - - F32 mVolume; - F32 mPan; -}; - -VolumeCatcherImpl *VolumeCatcherImpl::sInstance = NULL;; - -struct VolumeCatcherStorage -{ - ComponentInstance self; - ComponentInstance delegate; -}; - -static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage); -static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self); -static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self); - -VolumeCatcherImpl *VolumeCatcherImpl::getInstance() -{ - if(!sInstance) - { - sInstance = new VolumeCatcherImpl; - } - - return sInstance; -} - -VolumeCatcherImpl::VolumeCatcherImpl() -{ - mVolume = 1.0; // default to full volume - mPan = 0.0; // and center pan - - ComponentDescription desc; - desc.componentType = kAudioUnitType_Output; - desc.componentSubType = kAudioUnitSubType_DefaultOutput; - desc.componentManufacturer = kAudioUnitManufacturer_Apple; - desc.componentFlags = 0; - desc.componentFlagsMask = 0; - - // Find the original default output component - mOriginalDefaultOutput = FindNextComponent(NULL, &desc); - - // Register our own output component with the same parameters - mVolumeAdjuster = RegisterComponent(&desc, NewComponentRoutineUPP(volume_catcher_component_entry), 0, NULL, NULL, NULL); - - // Capture the original component, so we always get found instead. - CaptureComponent(mOriginalDefaultOutput, mVolumeAdjuster); - -} - -static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage) -{ - ComponentResult result = badComponentSelector; - VolumeCatcherStorage *storage = (VolumeCatcherStorage*)componentStorage; - - switch(cp->what) - { - case kComponentOpenSelect: -// std::cerr << "kComponentOpenSelect" << std::endl; - result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_open, uppCallComponentOpenProcInfo); - break; - - case kComponentCloseSelect: -// std::cerr << "kComponentCloseSelect" << std::endl; - result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_close, uppCallComponentCloseProcInfo); - // CallComponentFunctionWithStorageProcInfo - break; - - default: -// std::cerr << "Delegating selector: " << cp->what << " to component instance " << storage->delegate << std::endl; - result = DelegateComponentCall(cp, storage->delegate); - break; - } - - return result; -} - -static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self) -{ - ComponentResult result = noErr; - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - - storage = new VolumeCatcherStorage; - - storage->self = self; - storage->delegate = NULL; - - result = OpenAComponent(impl->mOriginalDefaultOutput, &(storage->delegate)); - - if(result != noErr) - { -// std::cerr << "OpenAComponent result = " << result << ", component ref = " << storage->delegate << std::endl; - - // If we failed to open the delagate component, our open is going to fail. Clean things up. - delete storage; - } - else - { - // Success -- set up this component's storage - SetComponentInstanceStorage(self, (Handle)storage); - - // add this instance to the global list - impl->mComponentInstances.push_back(storage); - - // and set up the initial volume - impl->setInstanceVolume(storage); - } - - return result; -} - -static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self) -{ - ComponentResult result = noErr; - - if(storage) - { - if(storage->delegate) - { - CloseComponent(storage->delegate); - storage->delegate = NULL; - } - - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mComponentInstances.remove(storage); - delete[] storage; - } - - return result; -} - -void VolumeCatcherImpl::setVolume(F32 volume) -{ - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mVolume = volume; - - // Iterate through all known instances, setting the volume on each. - for(std::list::iterator iter = mComponentInstances.begin(); iter != mComponentInstances.end(); ++iter) - { - impl->setInstanceVolume(*iter); - } -} - -void VolumeCatcherImpl::setPan(F32 pan) -{ - VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); - impl->mPan = pan; - - // TODO: implement this. - // This will probably require adding a "panner" audio unit to the chain somehow. - // There's also a "3d mixer" component that we might be able to use... -} - -void VolumeCatcherImpl::setInstanceVolume(VolumeCatcherStorage *instance) -{ -// std::cerr << "Setting volume on component instance: " << (instance->delegate) << " to " << mVolume << std::endl; - - OSStatus err = noErr; - - if(instance && instance->delegate) - { - err = AudioUnitSetParameter( - instance->delegate, - kHALOutputParam_Volume, - kAudioUnitScope_Global, - 0, - mVolume, - 0); - } - - if(err) - { -// std::cerr << " AudioUnitSetParameter returned " << err << std::endl; - } -} - -///////////////////////////////////////////////////// - -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. -} - -#if LL_DARWIN -#pragma GCC diagnostic warning "-Wdeprecated-declarations" -#endif +/** + * @file mac_volume_catcher.cpp + * @brief A macOS specific hack to control the volume level 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 + */ + +/************************************************************************************************************** + This code works by using CaptureComponent to capture the "Default Output" audio component + (kAudioUnitType_Output/kAudioUnitSubType_DefaultOutput) and delegating all calls to the original component. + It does this just to keep track of all instances of the default output component, so that it can set the + kHALOutputParam_Volume parameter on all of them to adjust the output volume. +**************************************************************************************************************/ + +#include "volume_catcher.h" + +#include +#include +#include + +#if LL_DARWIN +#pragma GCC diagnostic ignored "-Wdeprecated-declarations" +#endif + +struct VolumeCatcherStorage; + +class VolumeCatcherImpl +{ +public: + + void setVolume(F32 volume); + void setPan(F32 pan); + + void setInstanceVolume(VolumeCatcherStorage *instance); + + std::list mComponentInstances; + Component mOriginalDefaultOutput; + Component mVolumeAdjuster; + + static VolumeCatcherImpl *getInstance(); +private: + // This is a singleton class -- both callers and the component implementation should use getInstance() to find the instance. + VolumeCatcherImpl(); + static VolumeCatcherImpl *sInstance; + + // The singlar instance of this class is expected to last until the process exits. + // To ensure this, we declare the destructor here but never define it, so any code which attempts to destroy the instance will not link. + ~VolumeCatcherImpl(); + + F32 mVolume; + F32 mPan; +}; + +VolumeCatcherImpl *VolumeCatcherImpl::sInstance = NULL;; + +struct VolumeCatcherStorage +{ + ComponentInstance self; + ComponentInstance delegate; +}; + +static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage); +static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self); +static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self); + +VolumeCatcherImpl *VolumeCatcherImpl::getInstance() +{ + if(!sInstance) + { + sInstance = new VolumeCatcherImpl; + } + + return sInstance; +} + +VolumeCatcherImpl::VolumeCatcherImpl() +{ + mVolume = 1.0; // default to full volume + mPan = 0.0; // and center pan + + ComponentDescription desc; + desc.componentType = kAudioUnitType_Output; + desc.componentSubType = kAudioUnitSubType_DefaultOutput; + desc.componentManufacturer = kAudioUnitManufacturer_Apple; + desc.componentFlags = 0; + desc.componentFlagsMask = 0; + + // Find the original default output component + mOriginalDefaultOutput = FindNextComponent(NULL, &desc); + + // Register our own output component with the same parameters + mVolumeAdjuster = RegisterComponent(&desc, NewComponentRoutineUPP(volume_catcher_component_entry), 0, NULL, NULL, NULL); + + // Capture the original component, so we always get found instead. + CaptureComponent(mOriginalDefaultOutput, mVolumeAdjuster); + +} + +static ComponentResult volume_catcher_component_entry(ComponentParameters *cp, Handle componentStorage) +{ + ComponentResult result = badComponentSelector; + VolumeCatcherStorage *storage = (VolumeCatcherStorage*)componentStorage; + + switch(cp->what) + { + case kComponentOpenSelect: +// std::cerr << "kComponentOpenSelect" << std::endl; + result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_open, uppCallComponentOpenProcInfo); + break; + + case kComponentCloseSelect: +// std::cerr << "kComponentCloseSelect" << std::endl; + result = CallComponentFunctionWithStorageProcInfo((Handle)storage, cp, (ProcPtr)volume_catcher_component_close, uppCallComponentCloseProcInfo); + // CallComponentFunctionWithStorageProcInfo + break; + + default: +// std::cerr << "Delegating selector: " << cp->what << " to component instance " << storage->delegate << std::endl; + result = DelegateComponentCall(cp, storage->delegate); + break; + } + + return result; +} + +static ComponentResult volume_catcher_component_open(VolumeCatcherStorage *storage, ComponentInstance self) +{ + ComponentResult result = noErr; + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + + storage = new VolumeCatcherStorage; + + storage->self = self; + storage->delegate = NULL; + + result = OpenAComponent(impl->mOriginalDefaultOutput, &(storage->delegate)); + + if(result != noErr) + { +// std::cerr << "OpenAComponent result = " << result << ", component ref = " << storage->delegate << std::endl; + + // If we failed to open the delagate component, our open is going to fail. Clean things up. + delete storage; + } + else + { + // Success -- set up this component's storage + SetComponentInstanceStorage(self, (Handle)storage); + + // add this instance to the global list + impl->mComponentInstances.push_back(storage); + + // and set up the initial volume + impl->setInstanceVolume(storage); + } + + return result; +} + +static ComponentResult volume_catcher_component_close(VolumeCatcherStorage *storage, ComponentInstance self) +{ + ComponentResult result = noErr; + + if(storage) + { + if(storage->delegate) + { + CloseComponent(storage->delegate); + storage->delegate = NULL; + } + + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mComponentInstances.remove(storage); + delete[] storage; + } + + return result; +} + +void VolumeCatcherImpl::setVolume(F32 volume) +{ + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mVolume = volume; + + // Iterate through all known instances, setting the volume on each. + for(std::list::iterator iter = mComponentInstances.begin(); iter != mComponentInstances.end(); ++iter) + { + impl->setInstanceVolume(*iter); + } +} + +void VolumeCatcherImpl::setPan(F32 pan) +{ + VolumeCatcherImpl *impl = VolumeCatcherImpl::getInstance(); + impl->mPan = pan; + + // TODO: implement this. + // This will probably require adding a "panner" audio unit to the chain somehow. + // There's also a "3d mixer" component that we might be able to use... +} + +void VolumeCatcherImpl::setInstanceVolume(VolumeCatcherStorage *instance) +{ +// std::cerr << "Setting volume on component instance: " << (instance->delegate) << " to " << mVolume << std::endl; + + OSStatus err = noErr; + + if(instance && instance->delegate) + { + err = AudioUnitSetParameter( + instance->delegate, + kHALOutputParam_Volume, + kAudioUnitScope_Global, + 0, + mVolume, + 0); + } + + if(err) + { +// std::cerr << " AudioUnitSetParameter returned " << err << std::endl; + } +} + +///////////////////////////////////////////////////// + +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. +} + +#if LL_DARWIN +#pragma GCC diagnostic warning "-Wdeprecated-declarations" +#endif -- cgit v1.2.3