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Diffstat (limited to 'distrho/src/CoreAudio106/PublicUtility/CAAUParameter.cpp')
| -rwxr-xr-x | distrho/src/CoreAudio106/PublicUtility/CAAUParameter.cpp | 394 |
1 files changed, 394 insertions, 0 deletions
diff --git a/distrho/src/CoreAudio106/PublicUtility/CAAUParameter.cpp b/distrho/src/CoreAudio106/PublicUtility/CAAUParameter.cpp new file mode 100755 index 00000000..7d3bf8a3 --- /dev/null +++ b/distrho/src/CoreAudio106/PublicUtility/CAAUParameter.cpp @@ -0,0 +1,394 @@ +/* Copyright © 2007 Apple Inc. All Rights Reserved. + + 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. +*/ +#include "CAAUParameter.h" + +CAAUParameter::CAAUParameter() +{ + memset(this, 0, sizeof(CAAUParameter)); +} + +CAAUParameter::CAAUParameter(AudioUnit au, AudioUnitParameterID param, AudioUnitScope scope, AudioUnitElement element) +{ + memset(this, 0, sizeof(CAAUParameter)); + Init (au, param, scope, element); +} + +CAAUParameter::CAAUParameter (AudioUnitParameter &inParam) +{ + memset(this, 0, sizeof(CAAUParameter)); + Init (inParam.mAudioUnit, inParam.mParameterID, inParam.mScope, inParam.mElement); +} + +CAAUParameter::CAAUParameter(const CAAUParameter &a) +{ + memset(this, 0, sizeof(CAAUParameter)); + *this = a; +} + +CAAUParameter & CAAUParameter::operator = (const CAAUParameter &a) +{ + if (mParamName) CFRelease(mParamName); + if (mParamTag) CFRelease(mParamTag); + if (mNamedParams) CFRelease(mNamedParams); + + memcpy(this, &a, sizeof(CAAUParameter)); + + if (mParamName) CFRetain(mParamName); + if (mParamTag) CFRetain(mParamTag); + if (mNamedParams) CFRetain(mNamedParams); + + return *this; +} + +CAAUParameter::~CAAUParameter() +{ + if (mParamName) CFRelease(mParamName); + if (mParamTag) CFRelease(mParamTag); + if (mNamedParams) CFRelease (mNamedParams); +} + +void CAAUParameter::Init (AudioUnit au, AudioUnitParameterID param, AudioUnitScope scope, AudioUnitElement element) +{ + mAudioUnit = au; + mParameterID = param; + mScope = scope; + mElement = element; + + UInt32 propertySize = sizeof(mParamInfo); + OSStatus err = AudioUnitGetProperty(au, kAudioUnitProperty_ParameterInfo, + scope, param, &mParamInfo, &propertySize); + if (err) + memset(&mParamInfo, 0, sizeof(mParamInfo)); + if (mParamInfo.flags & kAudioUnitParameterFlag_HasCFNameString) { + mParamName = mParamInfo.cfNameString; + if (!(mParamInfo.flags & kAudioUnitParameterFlag_CFNameRelease)) + CFRetain (mParamName); + } else + mParamName = CFStringCreateWithCString(NULL, mParamInfo.name, kCFStringEncodingUTF8); + + const char* str = 0; + switch (mParamInfo.unit) + { + case kAudioUnitParameterUnit_Boolean: + str = "T/F"; + break; + case kAudioUnitParameterUnit_Percent: + case kAudioUnitParameterUnit_EqualPowerCrossfade: + str = "%"; + break; + case kAudioUnitParameterUnit_Seconds: + str = "Secs"; + break; + case kAudioUnitParameterUnit_SampleFrames: + str = "Samps"; + break; + case kAudioUnitParameterUnit_Phase: + case kAudioUnitParameterUnit_Degrees: + str = "Degr."; + break; + case kAudioUnitParameterUnit_Hertz: + str = "Hz"; + break; + case kAudioUnitParameterUnit_Cents: + case kAudioUnitParameterUnit_AbsoluteCents: + str = "Cents"; + break; + case kAudioUnitParameterUnit_RelativeSemiTones: + str = "S-T"; + break; + case kAudioUnitParameterUnit_MIDINoteNumber: + case kAudioUnitParameterUnit_MIDIController: + str = "MIDI"; + //these are inclusive, so add one value here + mNumIndexedParams = short(mParamInfo.maxValue+1 - mParamInfo.minValue); + break; + case kAudioUnitParameterUnit_Decibels: + str = "dB"; + break; + case kAudioUnitParameterUnit_MixerFaderCurve1: + case kAudioUnitParameterUnit_LinearGain: + str = "Gain"; + break; + case kAudioUnitParameterUnit_Pan: + str = "L/R"; + break; + case kAudioUnitParameterUnit_Meters: + str = "Mtrs"; + break; + case kAudioUnitParameterUnit_Octaves: + str = "8ve"; + break; + case kAudioUnitParameterUnit_BPM: + str = "BPM"; + break; + case kAudioUnitParameterUnit_Beats: + str = "Beats"; + break; + case kAudioUnitParameterUnit_Milliseconds: + str = "msecs"; + break; + case kAudioUnitParameterUnit_Ratio: + str = "Ratio"; + break; + case kAudioUnitParameterUnit_Indexed: + { + propertySize = sizeof(mNamedParams); + err = AudioUnitGetProperty (au, + kAudioUnitProperty_ParameterValueStrings, + scope, + param, + &mNamedParams, + &propertySize); + if (!err && mNamedParams) { + mNumIndexedParams = CFArrayGetCount(mNamedParams); + } else { + //these are inclusive, so add one value here + mNumIndexedParams = short(mParamInfo.maxValue+1 - mParamInfo.minValue); + } + str = NULL; + } + break; + case kAudioUnitParameterUnit_CustomUnit: + { + CFStringRef unitName = mParamInfo.unitName; + static char paramStr[256]; + CFStringGetCString (unitName, paramStr, 256, kCFStringEncodingUTF8); + if (mParamInfo.flags & kAudioUnitParameterFlag_CFNameRelease) + CFRelease (unitName); + str = paramStr; + break; + } + case kAudioUnitParameterUnit_Generic: + case kAudioUnitParameterUnit_Rate: + default: + str = NULL; + break; + } + + if (str) + mParamTag = CFStringCreateWithCString(NULL, str, kCFStringEncodingUTF8); + else + mParamTag = NULL; +} + + +Float32 CAAUParameter::GetValue() const +{ + Float32 value = 0.; + //OSStatus err = + AudioUnitGetParameter(mAudioUnit, mParameterID, mScope, mElement, &value); + return value; +} + +CFStringRef CreateLocalizedStringForParameterValue ( double inParameterValue, + const CAAUParameter * inParameter, + UInt32 inDigits, + UInt32 minDigits) { + if (!inParameter) return nil; + + AudioUnitParameterInfo info = inParameter->ParamInfo(); + int pow10; + + switch (info.unit) { + case kAudioUnitParameterUnit_Hertz: + // number of significant digits based on value + pow10 = int(log10(fmax(inParameterValue, .000001))); + break; + default: + // number of significant digits based on parameter range + pow10 = int(log10(fmax(double(info.maxValue - info.minValue), .000001))); + break; + } + + // pow10 range nDigitsAfterDecimal + // -2 .0100-.0999 4 + // -1 .100-.999 3 + // 0 1.00-9.99 2 + // 1 10.0-99.9 1 + // 2 100-999 0 + // 3 1000-9990 -1 + // 4 10000-99900 -2 + + int nDigitsAfterDecimal = inDigits - (pow10 + 1); + if (nDigitsAfterDecimal < 0) + nDigitsAfterDecimal = 0; // the least number of digits possible is zero + + if (info.flags & kAudioUnitParameterFlag_IsHighResolution) + nDigitsAfterDecimal = 4; + + CFLocaleRef currentLocale = CFLocaleCopyCurrent(); + CFNumberFormatterRef numberFormatter = CFNumberFormatterCreate (NULL, currentLocale, kCFNumberFormatterDecimalStyle); + + CFNumberRef maxFractionDigits = CFNumberCreate (NULL, kCFNumberIntType, &nDigitsAfterDecimal); + + if (nDigitsAfterDecimal > 0) + nDigitsAfterDecimal = minDigits; + + CFNumberRef minFractionDigits = CFNumberCreate (NULL, kCFNumberIntType, &nDigitsAfterDecimal); + + CFNumberFormatterSetProperty (numberFormatter, kCFNumberFormatterMinFractionDigits, minFractionDigits); + CFNumberFormatterSetProperty (numberFormatter, kCFNumberFormatterMaxFractionDigits, maxFractionDigits); + CFStringRef formattedNumberString = CFNumberFormatterCreateStringWithValue (NULL, numberFormatter, kCFNumberDoubleType, &inParameterValue); + + CFRelease(currentLocale); + CFRelease(numberFormatter); + CFRelease(maxFractionDigits); + CFRelease(minFractionDigits); + + return formattedNumberString; +} + +CFStringRef CreateLocalizedStringForParameterValue ( double inParameterValue, + const CAAUParameter * inParameter, + UInt32 inDigits) { + return CreateLocalizedStringForParameterValue (inParameterValue, inParameter, inDigits, 1); +} + +double ValueForLocalizedParameterString (CFStringRef string, const CAAUParameter * inParameter) { + CFLocaleRef currentLocale = CFLocaleCopyCurrent(); + CFNumberFormatterRef numberFormatter = CFNumberFormatterCreate (NULL, currentLocale, kCFNumberFormatterDecimalStyle); + + double value = 0; + Boolean worked = CFNumberFormatterGetValueFromString (numberFormatter, string, NULL, kCFNumberDoubleType, &value); + + CFRelease(currentLocale); + CFRelease(numberFormatter); + + if (worked) + return value; + else { + AudioUnitParameterInfo info = inParameter->ParamInfo(); + return info.defaultValue; + } +} + +CFStringRef CAAUParameter::GetStringFromValueCopy(const Float32 *value) const +{ + if (HasNamedParams()) + { + Float32 val = (value == NULL ? GetValue() : *value); + int index = int(mParamInfo.minValue) + int(val); + CFStringRef str = GetParamName (index); + if (str) { + CFRetain (str); + return str; + } + } + else if (ValuesHaveStrings()) + { + AudioUnitParameterStringFromValue stringValue; + stringValue.inParamID = mParameterID; + stringValue.inValue = value; + stringValue.outString = NULL; + UInt32 propertySize = sizeof(stringValue); + + OSStatus err = AudioUnitGetProperty (mAudioUnit, + kAudioUnitProperty_ParameterStringFromValue, + mScope, + mParameterID, + &stringValue, + &propertySize); + + if (!err && stringValue.outString != NULL) + return stringValue.outString; + } + + Float32 val = (value == NULL ? GetValue() : *value); + AudioUnitParameterUnit unit = this->ParamInfo().unit; + if (unit == kAudioUnitParameterUnit_Cents || unit == kAudioUnitParameterUnit_AbsoluteCents) + return CreateLocalizedStringForParameterValue(val, this, 4, 0); + else + return CreateLocalizedStringForParameterValue(val, this, 4); +} + +Float32 CAAUParameter::GetValueFromString(CFStringRef str) const +{ + if (ValuesHaveStrings()) + { + AudioUnitParameterValueFromString valueString; + valueString.inParamID = mParameterID; + valueString.inString = str; + UInt32 propertySize = sizeof(valueString); + + OSStatus err = AudioUnitGetProperty (mAudioUnit, + kAudioUnitProperty_ParameterValueFromString, + mScope, + mParameterID, + &valueString, + &propertySize); + + if (!err) { + return valueString.outValue; + } + } + + return (Float32) ValueForLocalizedParameterString(str, this); +} + +void CAAUParameter::SetValue( AUParameterListenerRef inListener, + void * inObject, + Float32 inValue) const +{ + // clip inValue as: maxValue >= inValue >= minValue before setting + Float32 valueToSet = inValue; + if (valueToSet > mParamInfo.maxValue) + valueToSet = mParamInfo.maxValue; + if (valueToSet < mParamInfo.minValue) + valueToSet = mParamInfo.minValue; + + AUParameterSet(inListener, inObject, this, valueToSet, 0); +} + +#if DEBUG +void CAAUParameter::Print() const +{ + UInt32 clump = 0; + GetClumpID (clump); + + UInt32 len = CFStringGetLength(mParamName); + char* chars = (char*)malloc (len * 2); // give us plenty of room for unichar chars + if (!CFStringGetCString (mParamName, chars, len * 2, kCFStringEncodingUTF8)) + chars[0] = 0; + + printf ("ID: %ld, Clump: %u, Name: %s\n", (long unsigned int) mParameterID, (unsigned int) clump, chars); + free (chars); +} +#endif |