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Diffstat (limited to 'libs/appleutility/CoreAudio/PublicUtility/CAAudioChannelLayoutObject.cpp')
| -rw-r--r-- | libs/appleutility/CoreAudio/PublicUtility/CAAudioChannelLayoutObject.cpp | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/PublicUtility/CAAudioChannelLayoutObject.cpp b/libs/appleutility/CoreAudio/PublicUtility/CAAudioChannelLayoutObject.cpp new file mode 100644 index 0000000000..009d4b3b5e --- /dev/null +++ b/libs/appleutility/CoreAudio/PublicUtility/CAAudioChannelLayoutObject.cpp @@ -0,0 +1,210 @@ +/* + File: CAAudioChannelLayoutObject.cpp + Abstract: CAAudioChannelLayoutObject.h + Version: 1.1 + + Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple + 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 Apple's 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 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. + + Copyright (C) 2014 Apple Inc. All Rights Reserved. + +*/ +#include "CAAudioChannelLayout.h" +#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__) + #include <AudioToolbox/AudioFormat.h> +#else + #include <AudioFormat.h> +#endif + +CAAudioChannelLayout::CAAudioChannelLayout () +{ + mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(0); +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (UInt32 inNumberChannels, bool inChooseSurround) +{ + // this chooses default layouts based on the number of channels... + AudioChannelLayoutTag tag; + + switch (inNumberChannels) + { + default: + // here we have a "broken" layout, in the sense that we haven't any idea how to lay this out + mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(inNumberChannels); + SetAllToUnknown(*mLayout->GetLayout(), inNumberChannels); + return; // don't fall into the tag case + case 1: + tag = kAudioChannelLayoutTag_Mono; + break; + case 2: + tag = inChooseSurround ? kAudioChannelLayoutTag_Binaural : kAudioChannelLayoutTag_Stereo; + break; + case 4: + tag = inChooseSurround ? kAudioChannelLayoutTag_Ambisonic_B_Format : kAudioChannelLayoutTag_AudioUnit_4; + break; + case 5: + tag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_5_0 : kAudioChannelLayoutTag_AudioUnit_5; + break; + case 6: + tag = inChooseSurround ? kAudioChannelLayoutTag_AudioUnit_6_0 : kAudioChannelLayoutTag_AudioUnit_6; + break; + case 7: + tag = kAudioChannelLayoutTag_AudioUnit_7_0; + break; + case 8: + tag = kAudioChannelLayoutTag_AudioUnit_8; + break; + } + + mLayout = RefCountedLayout::CreateWithLayoutTag(tag); +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (AudioChannelLayoutTag inLayoutTag) + : mLayout(NULL) +{ + SetWithTag(inLayoutTag); +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (const CAAudioChannelLayout &c) + : mLayout(NULL) +{ + *this = c; +} + + +//============================================================================= +// CAAudioChannelLayout::AudioChannelLayout +//============================================================================= +CAAudioChannelLayout::CAAudioChannelLayout (const AudioChannelLayout* inChannelLayout) + : mLayout(NULL) +{ + *this = inChannelLayout; +} + +//============================================================================= +// CAAudioChannelLayout::~CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout::~CAAudioChannelLayout () +{ + if (mLayout) { + mLayout->release(); + mLayout = NULL; + } +} + +//============================================================================= +// CAAudioChannelLayout::CAAudioChannelLayout +//============================================================================= +CAAudioChannelLayout& CAAudioChannelLayout::operator= (const CAAudioChannelLayout &c) +{ + if (mLayout != c.mLayout) { + if (mLayout) + mLayout->release(); + + if ((mLayout = c.mLayout) != NULL) + mLayout->retain(); + } + + return *this; +} + +CAAudioChannelLayout& CAAudioChannelLayout::operator= (const AudioChannelLayout* inChannelLayout) +{ + if (mLayout && &mLayout->Layout() == inChannelLayout) + return *this; + + if (mLayout) + mLayout->release(); + + if (inChannelLayout == NULL) + { + mLayout = RefCountedLayout::CreateWithNumberChannelDescriptions(0); + } + else + { + mLayout = RefCountedLayout::CreateWithLayout(inChannelLayout); + } + return *this; +} + +void CAAudioChannelLayout::SetWithTag(AudioChannelLayoutTag inTag) +{ + if (mLayout) + mLayout->release(); + + mLayout = RefCountedLayout::CreateWithLayoutTag(inTag); +} + +//============================================================================= +// CAAudioChannelLayout::operator== +//============================================================================= +bool CAAudioChannelLayout::operator== (const CAAudioChannelLayout &c) const +{ + if (mLayout == c.mLayout) + return true; + return Layout() == c.Layout(); +} + +//============================================================================= +// CAAudioChannelLayout::operator!= +//============================================================================= +bool CAAudioChannelLayout::operator!= (const CAAudioChannelLayout &c) const +{ + if (mLayout == c.mLayout) + return false; + + return !(Layout() == c.Layout()); +} + +//============================================================================= +// CAAudioChannelLayout::Print +//============================================================================= +void CAAudioChannelLayout::Print (FILE* file) const +{ + CAShowAudioChannelLayout (file, &Layout()); +} + |