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Diffstat (limited to 'libs/appleutility/CoreAudio105/CAAudioChannelLayoutObject.cpp')
| -rw-r--r-- | libs/appleutility/CoreAudio105/CAAudioChannelLayoutObject.cpp | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio105/CAAudioChannelLayoutObject.cpp b/libs/appleutility/CoreAudio105/CAAudioChannelLayoutObject.cpp new file mode 100644 index 0000000000..9e3cf586e9 --- /dev/null +++ b/libs/appleutility/CoreAudio105/CAAudioChannelLayoutObject.cpp @@ -0,0 +1,199 @@ +/* Copyright: © Copyright 2005 Apple Computer, Inc. All rights reserved. + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple Computer, Inc. + ("Apple") in consideration of your agreement to the following terms, and your + use, installation, modification or redistribution of this Apple software + constitutes acceptance of these terms. If you do not agree with these terms, + please do not use, install, modify or redistribute this Apple software. + + In consideration of your agreement to abide by the following terms, and subject + to these terms, Apple grants you a personal, non-exclusive license, under AppleÕs + copyrights in this original Apple software (the "Apple Software"), to use, + reproduce, modify and redistribute the Apple Software, with or without + modifications, in source and/or binary forms; provided that if you redistribute + the Apple Software in its entirety and without modifications, you must retain + this notice and the following text and disclaimers in all such redistributions of + the Apple Software. Neither the name, trademarks, service marks or logos of + Apple Computer, Inc. may be used to endorse or promote products derived from the + Apple Software without specific prior written permission from Apple. Except as + expressly stated in this notice, no other rights or licenses, express or implied, + are granted by Apple herein, including but not limited to any patent rights that + may be infringed by your derivative works or by other works in which the Apple + Software may be incorporated. + + The Apple Software is provided by Apple on an "AS IS" basis. APPLE MAKES NO + WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED + WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A PARTICULAR + PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND OPERATION ALONE OR IN + COMBINATION WITH YOUR PRODUCTS. + + IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR + CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION, MODIFICATION AND/OR DISTRIBUTION + OF THE APPLE SOFTWARE, HOWEVER CAUSED AND WHETHER UNDER THEORY OF CONTRACT, TORT + (INCLUDING NEGLIGENCE), STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN + ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ +/*============================================================================= + CAAudioChannelLayoutObject.cpp + +=============================================================================*/ + +#include "CAAudioChannelLayout.h" +#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) + #include <CoreServices/CoreServices.h> + #include <AudioToolbox/AudioFormat.h> +#else + #include <CoreServices.h> + #include <AudioFormat.h> +#endif + + +CAAudioChannelLayout::CAAudioChannelLayout () +{ + mLayoutHolder = new ACLRefCounter (offsetof(AudioChannelLayout, mChannelDescriptions)); +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (UInt32 inNumberChannels, bool inChooseSurround) +{ + // this chooses default layouts based on the number of channels... + UInt32 theSize = CalculateByteSize (inNumberChannels); + + mLayoutHolder = new ACLRefCounter (theSize); + + AudioChannelLayout* layout = mLayoutHolder->GetLayout(); + + layout->mNumberChannelDescriptions = inNumberChannels; + + switch (inNumberChannels) + { + case 1: + layout->mChannelLayoutTag = kAudioChannelLayoutTag_Mono; + break; + case 2: + layout->mChannelLayoutTag = inChooseSurround ? kAudioChannelLayoutTag_Binaural : kAudioChannelLayoutTag_Stereo; + break; + case 4: + layout->mChannelLayoutTag = inChooseSurround ? kAudioChannelLayoutTag_Ambisonic_B_Format : kAudioChannelLayoutTag_AudioUnit_4; + break; + case 5: + layout->mChannelLayoutTag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_5_0 : kAudioChannelLayoutTag_AudioUnit_5; + break; + case 6: + layout->mChannelLayoutTag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_6_0 : kAudioChannelLayoutTag_AudioUnit_6; + break; + case 7: + layout->mChannelLayoutTag = kAudioChannelLayoutTag_AudioUnit_7_0; + break; + case 8: + layout->mChannelLayoutTag = kAudioChannelLayoutTag_AudioUnit_8; + break; + default: + // here we have a "broken" layout, in the sense that we haven't any idea how to lay this out + // the layout itself is all set to zeros + // ### no longer true ### + SetAllToUnknown(*layout, inNumberChannels); + break; + } +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (AudioChannelLayoutTag inLayoutTag) + : mLayoutHolder(NULL) +{ + SetWithTag(inLayoutTag); +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (const CAAudioChannelLayout &c) + : mLayoutHolder(NULL) +{ + *this = c; +} + + +//============================================================================= +// CAAudioChannelLayout::AudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (const AudioChannelLayout* inChannelLayout) + : mLayoutHolder(NULL) +{ + *this = inChannelLayout; +} + +//============================================================================= +// CAAudioChannelLayout::~CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::~CAAudioChannelLayout () +{ + if (mLayoutHolder) { + mLayoutHolder->release(); + mLayoutHolder = NULL; + } +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout& CAAudioChannelLayout::operator= (const CAAudioChannelLayout &c) +{ + if (mLayoutHolder != c.mLayoutHolder) { + if (mLayoutHolder) + mLayoutHolder->release(); + + if ((mLayoutHolder = c.mLayoutHolder) != NULL) + mLayoutHolder->retain(); + } + + return *this; +} + +CAAudioChannelLayout& CAAudioChannelLayout::operator= (const AudioChannelLayout* inChannelLayout) +{ + if (mLayoutHolder) + mLayoutHolder->release(); + + UInt32 theSize = CalculateByteSize (inChannelLayout->mNumberChannelDescriptions); + + mLayoutHolder = new ACLRefCounter (theSize); + + memcpy(mLayoutHolder->mLayout, inChannelLayout, theSize); + return *this; +} + +void CAAudioChannelLayout::SetWithTag(AudioChannelLayoutTag inTag) +{ + if (mLayoutHolder) + mLayoutHolder->release(); + + mLayoutHolder = new ACLRefCounter(offsetof(AudioChannelLayout, mChannelDescriptions[0])); + AudioChannelLayout* layout = mLayoutHolder->GetLayout(); + layout->mChannelLayoutTag = inTag; +} + +//============================================================================= +// CAAudioChannelLayout::operator== +//============================================================================= +bool CAAudioChannelLayout::operator== (const CAAudioChannelLayout &c) const +{ + if (mLayoutHolder == c.mLayoutHolder) + return true; + return Layout() == c.Layout(); +} + +//============================================================================= +// CAAudioChannelLayout::Print +//============================================================================= +void CAAudioChannelLayout::Print (FILE* file) const +{ + CAShowAudioChannelLayout (file, &Layout()); +} + |