126 lines
4.8 KiB
C++
126 lines
4.8 KiB
C++
/*
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File: AUBaseHelper.cpp
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Abstract: AUBaseHelper.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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#include "AUBaseHelper.h"
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#if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
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#include <AudioUnit/AudioUnitProperties.h>
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#else
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#include <AudioUnitProperties.h>
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#endif
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OSStatus GetFileRefPath (CFDictionaryRef parent, CFStringRef frKey, CFStringRef * fPath)
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{
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static CFStringRef kFRString = CFSTR (kAUPresetExternalFileRefs);
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const void* frVal = CFDictionaryGetValue(parent, kFRString);
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if (!frVal) return kAudioUnitErr_InvalidPropertyValue;
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const void* frString = CFDictionaryGetValue ((CFDictionaryRef)frVal, frKey);
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if (!frString) return kAudioUnitErr_InvalidPropertyValue;
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if (fPath)
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*fPath = (CFStringRef)frString;
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return noErr;
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}
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CFMutableDictionaryRef CreateFileRefDict (CFStringRef fKey, CFStringRef fPath, CFMutableDictionaryRef fileRefDict)
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{
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if (!fileRefDict)
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fileRefDict = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
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CFDictionarySetValue (fileRefDict, fKey, fPath);
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return fileRefDict;
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}
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#if TARGET_OS_MAC
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// check if the URL can be accessed for reading/writing. Returns 0 if yes, or the error value.
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int AccessURLAsset(const CFURLRef inURL, int mode)
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{
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char path[PATH_MAX];
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if (CFURLGetFileSystemRepresentation(inURL, TRUE, (UInt8 *)path, PATH_MAX) == FALSE)
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return kAudio_FileNotFoundError;
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// check whether we have access
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int ret = access(path, mode);
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// syslog(LOG_CRIT, "access() error is %d for \"%s\".\n", ret, path);
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if (ret == 0) return 0;
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switch (errno) {
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case EACCES:
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case EPERM:
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return -54; /*permission denied error*/
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case ENOENT:
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case ENOTDIR:
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case ELOOP:
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return kAudio_FileNotFoundError;
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default:
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return errno;
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}
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}
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#endif
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#if DEBUG
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//_____________________________________________________________________________
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//
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void PrintAUParamEvent (AudioUnitParameterEvent& event, FILE* f)
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{
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bool isRamp = event.eventType == kParameterEvent_Ramped;
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fprintf (f, "\tParamID=%ld,Scope=%ld,Element=%ld\n", (long)event.parameter, (long)event.scope, (long)event.element);
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fprintf (f, "\tEvent Type:%s,", (isRamp ? "ramp" : "immediate"));
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if (isRamp)
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fprintf (f, "start=%ld,dur=%ld,startValue=%f,endValue=%f\n",
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(long)event.eventValues.ramp.startBufferOffset, (long)event.eventValues.ramp.durationInFrames,
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event.eventValues.ramp.startValue, event.eventValues.ramp.endValue);
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else
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fprintf (f, "start=%ld,value=%f\n",
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(long)event.eventValues.immediate.bufferOffset,
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event.eventValues.immediate.value);
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fprintf (f, "- - - - - - - - - - - - - - - -\n");
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}
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#endif
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