diff options
author | Paul Davis <paul@linuxaudiosystems.com> | 2015-10-17 20:46:58 -0400 |
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committer | Robin Gareus <robin@gareus.org> | 2015-10-18 23:03:13 +0200 |
commit | 66704eefcbe132eac0415434340f788808c40302 (patch) | |
tree | 2d4b596265f2fd801244862cef8bb79a63eea289 /libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp | |
parent | f7e3117c3b3f09cc10cb10434660accf4ef49fc8 (diff) |
alternative new version of the AppleUtility library
Diffstat (limited to 'libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp')
-rw-r--r-- | libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp b/libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp new file mode 100644 index 0000000000..9b72054101 --- /dev/null +++ b/libs/appleutility/CoreAudio/PublicUtility/CAStreamRangedDescription.cpp @@ -0,0 +1,183 @@ +/* + File: CAStreamRangedDescription.cpp + Abstract: CAStreamRangedDescription.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. + +*/ +//================================================================================================== +// Includes +//================================================================================================== + +// Self Include +#include "CAStreamRangedDescription.h" +#include "CAMath.h" + +//================================================================================================== +// CAStreamRangedDescription +//================================================================================================== + +const AudioStreamRangedDescription CAStreamRangedDescription::sEmpty = { { 0.0, 0, 0, 0, 0, 0, 0, 0, 0 }, { 0.0, 0.0 } }; + +#if CoreAudio_Debug +#include "CALogMacros.h" + +void CAStreamRangedDescription::PrintToLog(const AudioStreamRangedDescription& inDesc) +{ + PrintFloat (" Sample Rate: ", inDesc.mFormat.mSampleRate); + PrintFloat (" Max Sample Rate: ", inDesc.mSampleRateRange.mMaximum); + PrintFloat (" Min Sample Rate: ", inDesc.mSampleRateRange.mMinimum); + Print4CharCode (" Format ID: ", inDesc.mFormat.mFormatID); + PrintHex (" Format Flags: ", inDesc.mFormat.mFormatFlags); + PrintInt (" Bytes per Packet: ", inDesc.mFormat.mBytesPerPacket); + PrintInt (" Frames per Packet: ", inDesc.mFormat.mFramesPerPacket); + PrintInt (" Bytes per Frame: ", inDesc.mFormat.mBytesPerFrame); + PrintInt (" Channels per Frame: ", inDesc.mFormat.mChannelsPerFrame); + PrintInt (" Bits per Channel: ", inDesc.mFormat.mBitsPerChannel); +} +#endif + +bool CAStreamRangedDescription::Sorter(const AudioStreamRangedDescription& x, const AudioStreamRangedDescription& y) +{ + bool theAnswer = false; + bool isDone = false; + + // note that if either side is 0, that field is skipped + + // format ID is the first order sort + if((!isDone) && ((x.mFormat.mFormatID != 0) && (y.mFormat.mFormatID != 0))) + { + if(x.mFormat.mFormatID != y.mFormat.mFormatID) + { + // formats are sorted numerically except that linear + // PCM is always first + if(x.mFormat.mFormatID == kAudioFormatLinearPCM) + { + theAnswer = true; + } + else if(y.mFormat.mFormatID == kAudioFormatLinearPCM) + { + theAnswer = false; + } + else + { + theAnswer = x.mFormat.mFormatID < y.mFormat.mFormatID; + } + isDone = true; + } + } + + + // mixable is always better than non-mixable for linear PCM and should be the second order sort item + if((!isDone) && ((x.mFormat.mFormatID == kAudioFormatLinearPCM) && (y.mFormat.mFormatID == kAudioFormatLinearPCM))) + { + if(((x.mFormat.mFormatFlags & kIsNonMixableFlag) == 0) && ((y.mFormat.mFormatFlags & kIsNonMixableFlag) != 0)) + { + theAnswer = true; + isDone = true; + } + else if(((x.mFormat.mFormatFlags & kIsNonMixableFlag) != 0) && ((y.mFormat.mFormatFlags & kIsNonMixableFlag) == 0)) + { + theAnswer = false; + isDone = true; + } + } + + // floating point vs integer for linear PCM only + if((!isDone) && ((x.mFormat.mFormatID == kAudioFormatLinearPCM) && (y.mFormat.mFormatID == kAudioFormatLinearPCM))) + { + if((x.mFormat.mFormatFlags & kAudioFormatFlagIsFloat) != (y.mFormat.mFormatFlags & kAudioFormatFlagIsFloat)) + { + // floating point is better than integer + theAnswer = y.mFormat.mFormatFlags & kAudioFormatFlagIsFloat; + isDone = true; + } + } + + // bit depth + if((!isDone) && ((x.mFormat.mBitsPerChannel != 0) && (y.mFormat.mBitsPerChannel != 0))) + { + if(x.mFormat.mBitsPerChannel != y.mFormat.mBitsPerChannel) + { + // deeper bit depths are higher quality + theAnswer = x.mFormat.mBitsPerChannel > y.mFormat.mBitsPerChannel; + isDone = true; + } + } + + // sample rate range + if((!isDone) && fnonzero(x.mSampleRateRange.mMinimum) && fnonzero(x.mSampleRateRange.mMaximum) && fnonzero(y.mSampleRateRange.mMinimum) && fnonzero(y.mSampleRateRange.mMaximum)) + { + if(x.mSampleRateRange != y.mSampleRateRange) + { + // higher sample rates are higher quality + theAnswer = x.mSampleRateRange > y.mSampleRateRange; + isDone = true; + } + } + + // sample rate + if((!isDone) && fnonzero(x.mFormat.mSampleRate) && fnonzero(y.mFormat.mSampleRate)) + { + if(fnotequal(x.mFormat.mSampleRate, y.mFormat.mSampleRate)) + { + // higher sample rates are higher quality + theAnswer = x.mFormat.mSampleRate > y.mFormat.mSampleRate; + isDone = true; + } + } + + // number of channels + if((!isDone) && ((x.mFormat.mChannelsPerFrame != 0) && (y.mFormat.mChannelsPerFrame != 0))) + { + if(x.mFormat.mChannelsPerFrame != y.mFormat.mChannelsPerFrame) + { + // more channels is higher quality + theAnswer = x.mFormat.mChannelsPerFrame < y.mFormat.mChannelsPerFrame; + // commented out to prevent this from being flagged as a dead store by the static analyzer + //isDone = true; + } + } + + return theAnswer; +} + |