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alternative new version of the AppleUtility library
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Paul Davis
Robin Gareus
parent
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commit
66704eefcb
232 changed files with 52826 additions and 3 deletions
262
libs/appleutility/CoreAudio/PublicUtility/CAAudioValueRange.cpp
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262
libs/appleutility/CoreAudio/PublicUtility/CAAudioValueRange.cpp
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/*
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File: CAAudioValueRange.cpp
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Abstract: CAAudioValueRange.h
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Version: 1.1
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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terms, and your use, installation, modification or redistribution of
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this Apple software constitutes acceptance of these terms. If you do
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not agree with these terms, please do not use, install, modify or
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redistribute this Apple software.
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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license, under Apple's copyrights in this original Apple software (the
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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Software, with or without modifications, in source and/or binary forms;
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provided that if you redistribute the Apple Software in its entirety and
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without modifications, you must retain this notice and the following
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text and disclaimers in all such redistributions of the Apple Software.
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Neither the name, trademarks, service marks or logos of Apple Inc. may
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be used to endorse or promote products derived from the Apple Software
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without specific prior written permission from Apple. Except as
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expressly stated in this notice, no other rights or licenses, express or
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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OPERATION ALONE OR IN COMBINATION WITH YOUR PRODUCTS.
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) ARISING IN ANY WAY OUT OF THE USE, REPRODUCTION,
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MODIFICATION AND/OR DISTRIBUTION OF THE APPLE SOFTWARE, HOWEVER CAUSED
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AND WHETHER UNDER THEORY OF CONTRACT, TORT (INCLUDING NEGLIGENCE),
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STRICT LIABILITY OR OTHERWISE, EVEN IF APPLE HAS BEEN ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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//==================================================================================================
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// Includes
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//==================================================================================================
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// Self Include
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#include "CAAudioValueRange.h"
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// Standard Library
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#include <algorithm>
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//==================================================================================================
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// CAAudioValueRange
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//==================================================================================================
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Float64 CAAudioValueRange::BoundValue(const AudioValueRange& inRange, Float64 inValue)
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{
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if (inValue <= inRange.mMinimum)
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{
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return inRange.mMinimum;
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}
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else if (inValue >= inRange.mMaximum)
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{
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return inRange.mMaximum;
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}
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else
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{
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return inValue;
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}
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}
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Float64 CAAudioValueRange::PickCommonSampleRate(const AudioValueRange& inRange)
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{
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// This routine will pick a "common" sample rate from the give range of rates or the maximum
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// if no common rates can be found. It assumes that inRange contains a continuous range of
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// sample rates.
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Float64 theAnswer = inRange.mMaximum;
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if(ContainsValue(inRange, 44100.0))
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{
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theAnswer = 44100.0;
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}
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else if(ContainsValue(inRange, 48000.0))
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{
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theAnswer = 48000.0;
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}
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else if(ContainsValue(inRange, 96000.0))
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{
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theAnswer = 96000.0;
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}
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else if(ContainsValue(inRange, 88200.0))
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{
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theAnswer = 88200.0;
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}
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else if(ContainsValue(inRange, 64000.0))
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{
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theAnswer = 64000.0;
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}
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else if(ContainsValue(inRange, 32000.0))
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{
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theAnswer = 32000.0;
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}
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else if(ContainsValue(inRange, 24000.0))
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{
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theAnswer = 24000.0;
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}
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else if(ContainsValue(inRange, 22050.0))
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{
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theAnswer = 22050.0;
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}
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else if(ContainsValue(inRange, 16000.0))
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{
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theAnswer = 16000.0;
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}
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else if(ContainsValue(inRange, 12000.0))
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{
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theAnswer = 12000.0;
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}
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else if(ContainsValue(inRange, 11025.0))
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{
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theAnswer = 11025.0;
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}
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else if(ContainsValue(inRange, 8000.0))
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{
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theAnswer = 8000.0;
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}
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return theAnswer;
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}
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bool CAAudioValueRange::Intersection(const AudioValueRange& x, const AudioValueRange& y, AudioValueRange& outRange)
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{
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bool isNonEmpty;
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if(!IsStrictlyLessThan(x, y) && !IsStrictlyGreaterThan(x, y))
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{
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outRange.mMinimum = std::max(x.mMinimum, y.mMinimum);
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outRange.mMaximum = std::min(x.mMaximum, y.mMaximum);
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isNonEmpty = true;
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}
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else
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{
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outRange.mMinimum = 0;
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outRange.mMaximum = 0;
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isNonEmpty = false;
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}
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return isNonEmpty;
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}
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bool CAAudioValueRange::Union(const AudioValueRange& x, const AudioValueRange& y, AudioValueRange& outRange)
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{
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bool isDisjoint;
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if(!IsStrictlyLessThan(x, y) && !IsStrictlyGreaterThan(x, y))
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{
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outRange.mMinimum = std::min(x.mMinimum, y.mMinimum);
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outRange.mMaximum = std::max(x.mMaximum, y.mMaximum);
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isDisjoint = false;
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}
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else
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{
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outRange.mMinimum = 0;
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outRange.mMaximum = 0;
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isDisjoint = true;
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}
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return isDisjoint;
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}
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void CAAudioValueRange_ComputeUnion(const AudioValueRange& inRange, const CAAudioValueRangeList& inRangeList, CAAudioValueRangeList& outUnion)
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{
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// this method assumes that the ranges in inRangeList are disjoint and that they are sorted from low to high and
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outUnion.clear();
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// start at the beginning of inRangeList
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CAAudioValueRangeList::const_iterator theIterator = inRangeList.begin();
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// iterate through inRangeList and add all the ranges that are strictly less than inRange
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while((theIterator != inRangeList.end()) && CAAudioValueRange::IsStrictlyLessThan(*theIterator, inRange))
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{
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// put this range in the union
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outUnion.push_back(*theIterator);
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// go to the next one
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std::advance(theIterator, 1);
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}
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if(theIterator != inRangeList.end())
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{
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if(!CAAudioValueRange::IsStrictlyGreaterThan(*theIterator, inRange))
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{
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// inRange intersects the range that theIterator points at, but might actually intersect several contiguous ranges
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// initialize the starting point, noting that we can skip the current one since we already know it's in the intersection
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CAAudioValueRangeList::const_iterator theGreaterIterator = theIterator;
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std::advance(theGreaterIterator, 1);
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// iterate until we find a range that is strictly greater than inRange
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while((theGreaterIterator != inRangeList.end()) && !CAAudioValueRange::IsStrictlyGreaterThan(*theGreaterIterator, inRange))
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{
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// go to the next one
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std::advance(theGreaterIterator, 1);
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}
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// theGreaterIterator now points at either one past the highest range in the intersection or the end of the vector
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// Either way, we have to adjust it to point at the true highest range in the intersection
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std::advance(theGreaterIterator, -1);
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// now theIterator points at the lowest range in the intersection and theGreaterIterator points at the highest
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// so we can compute the coagulated range
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AudioValueRange theCoagulation;
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theCoagulation.mMinimum = std::min(theIterator->mMinimum, inRange.mMinimum);
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theCoagulation.mMaximum = std::max(theGreaterIterator->mMaximum, inRange.mMaximum);
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// add the coagulation to the union
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outUnion.push_back(theCoagulation);
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// adjust theIterator to point at the next range for processing
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theIterator = theGreaterIterator;
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std::advance(theIterator, 1);
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}
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else
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{
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// the range theIterator points at is strictly greater than inRange, so insert inRange in front of it and we're done
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outUnion.push_back(inRange);
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}
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// we need to now copy the remaining higher ranges in inRangeList into the union
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while(theIterator != inRangeList.end())
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{
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// put this range in the union
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outUnion.push_back(*theIterator);
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// go to the next one
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std::advance(theIterator, 1);
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}
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}
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else
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{
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// inRange is larger than all of the ranges in inRangeList, so just add it onto the end of the union and we're done
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// This is also the case if inRangeList is empty
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outUnion.push_back(inRange);
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}
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}
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void CAAudioValueRange_ComputeIntersection(UInt32 inNumberRangeList1Items, AudioValueRange inRangeList1[], const CAAudioValueRangeList& inRangeList2, CAAudioValueRangeList& outIntersections)
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{
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outIntersections.clear();
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for(UInt32 theRangeList1Index = 0; theRangeList1Index < inNumberRangeList1Items; ++theRangeList1Index)
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{
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for(CAAudioValueRangeList::const_iterator theRangeList2Iterator = inRangeList2.begin(); theRangeList2Iterator != inRangeList2.end(); std::advance(theRangeList2Iterator, 1))
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{
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AudioValueRange theIntersection;
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if(CAAudioValueRange::Intersection(inRangeList1[theRangeList1Index], *theRangeList2Iterator, theIntersection))
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{
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outIntersections.push_back(theIntersection);
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}
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}
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}
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}
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