mirror of
https://github.com/kyleneideck/BackgroundMusic
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182 lines
7.2 KiB
C++
182 lines
7.2 KiB
C++
/*
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File: CAHALAudioStream.cpp
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Abstract: CAHALAudioStream.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 "CAHALAudioStream.h"
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// PublicUtility Includes
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#include "CAAutoDisposer.h"
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#include "CADebugMacros.h"
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#include "CAException.h"
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#include "CAPropertyAddress.h"
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//==================================================================================================
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// CAHALAudioStream
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//==================================================================================================
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CAHALAudioStream::CAHALAudioStream(AudioObjectID inAudioStream)
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:
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CAHALAudioObject(inAudioStream)
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{
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}
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CAHALAudioStream::~CAHALAudioStream()
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{
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}
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UInt32 CAHALAudioStream::GetDirection() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyDirection);
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return GetPropertyData_UInt32(theAddress, 0, NULL);
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}
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UInt32 CAHALAudioStream::GetTerminalType() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyTerminalType);
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return GetPropertyData_UInt32(theAddress, 0, NULL);
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}
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UInt32 CAHALAudioStream::GetStartingChannel() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyStartingChannel);
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return GetPropertyData_UInt32(theAddress, 0, NULL);
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}
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UInt32 CAHALAudioStream::GetLatency() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyLatency);
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return GetPropertyData_UInt32(theAddress, 0, NULL);
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}
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void CAHALAudioStream::GetCurrentVirtualFormat(AudioStreamBasicDescription& outFormat) const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyVirtualFormat);
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UInt32 theSize = sizeof(AudioStreamBasicDescription);
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GetPropertyData(theAddress, 0, NULL, theSize, &outFormat);
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}
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void CAHALAudioStream::SetCurrentVirtualFormat(const AudioStreamBasicDescription& inFormat)
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyVirtualFormat);
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SetPropertyData(theAddress, 0, NULL, sizeof(AudioStreamBasicDescription), &inFormat);
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}
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UInt32 CAHALAudioStream::GetNumberAvailableVirtualFormats() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyAvailableVirtualFormats);
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UInt32 theAnswer = GetPropertyDataSize(theAddress, 0, NULL);
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theAnswer /= SizeOf32(AudioStreamRangedDescription);
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return theAnswer;
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}
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void CAHALAudioStream::GetAvailableVirtualFormats(UInt32& ioNumberFormats, AudioStreamRangedDescription* outFormats) const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyAvailableVirtualFormats);
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UInt32 theSize = ioNumberFormats * SizeOf32(AudioStreamRangedDescription);
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GetPropertyData(theAddress, 0, NULL, theSize, outFormats);
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ioNumberFormats = theSize / SizeOf32(AudioStreamRangedDescription);
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}
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void CAHALAudioStream::GetAvailableVirtualFormatByIndex(UInt32 inIndex, AudioStreamRangedDescription& outFormat) const
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{
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UInt32 theNumberFormats = GetNumberAvailableVirtualFormats();
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if((theNumberFormats > 0) && (inIndex < theNumberFormats))
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{
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CAAutoArrayDelete<AudioStreamRangedDescription> theFormats(theNumberFormats);
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GetAvailableVirtualFormats(theNumberFormats, theFormats);
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if((theNumberFormats > 0) && (inIndex < theNumberFormats))
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{
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outFormat = theFormats[inIndex];
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}
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}
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}
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void CAHALAudioStream::GetCurrentPhysicalFormat(AudioStreamBasicDescription& outFormat) const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyPhysicalFormat);
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UInt32 theSize = sizeof(AudioStreamBasicDescription);
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GetPropertyData(theAddress, 0, NULL, theSize, &outFormat);
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}
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void CAHALAudioStream::SetCurrentPhysicalFormat(const AudioStreamBasicDescription& inFormat)
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyPhysicalFormat);
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SetPropertyData(theAddress, 0, NULL, sizeof(AudioStreamBasicDescription), &inFormat);
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}
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UInt32 CAHALAudioStream::GetNumberAvailablePhysicalFormats() const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyAvailablePhysicalFormats);
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UInt32 theAnswer = GetPropertyDataSize(theAddress, 0, NULL);
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theAnswer /= SizeOf32(AudioStreamRangedDescription);
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return theAnswer;
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}
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void CAHALAudioStream::GetAvailablePhysicalFormats(UInt32& ioNumberFormats, AudioStreamRangedDescription* outFormats) const
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{
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CAPropertyAddress theAddress(kAudioStreamPropertyAvailablePhysicalFormats);
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UInt32 theSize = ioNumberFormats * SizeOf32(AudioStreamRangedDescription);
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GetPropertyData(theAddress, 0, NULL, theSize, outFormats);
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ioNumberFormats = theSize / SizeOf32(AudioStreamRangedDescription);
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}
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void CAHALAudioStream::GetAvailablePhysicalFormatByIndex(UInt32 inIndex, AudioStreamRangedDescription& outFormat) const
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{
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UInt32 theNumberFormats = GetNumberAvailablePhysicalFormats();
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if((theNumberFormats > 0) && (inIndex < theNumberFormats))
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{
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CAAutoArrayDelete<AudioStreamRangedDescription> theFormats(theNumberFormats);
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GetAvailablePhysicalFormats(theNumberFormats, theFormats);
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if((theNumberFormats > 0) && (inIndex < theNumberFormats))
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{
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outFormat = theFormats[inIndex];
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}
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}
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}
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