Jamoma API  0.6.0.a19
AUBaseHelper.cpp
1 /* Copyright 2007 Apple Inc. All Rights Reserved.
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40 */
41 #include "AUBaseHelper.h"
42 
43 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
44  #include <AudioUnit/AudioUnitProperties.h>
45 #else
46  #include <AudioUnitProperties.h>
47 #endif
48 
49 OSStatus GetFileRefPath (CFDictionaryRef parent, CFStringRef frKey, CFStringRef * fPath)
50 {
51  static CFStringRef kFRString = CFSTR (kAUPresetExternalFileRefs);
52 
53  const void* frVal = CFDictionaryGetValue(parent, kFRString);
54  if (!frVal) return kAudioUnitErr_InvalidPropertyValue;
55 
56  const void* frString = CFDictionaryGetValue ((CFDictionaryRef)frVal, frKey);
57  if (!frString) return kAudioUnitErr_InvalidPropertyValue;
58 
59  if (fPath)
60  *fPath = (CFStringRef)frString;
61 
62  return noErr;
63 }
64 
65 // write valid samples check, with bool for zapping
66 
67 UInt32 FindInvalidSamples(Float32 *inSource, UInt32 inFramesToProcess, bool &outHasNonZero, bool zapInvalidSamples)
68 {
69  float *sourceP = inSource;
70 
71  UInt32 badSamplesDetected = 0;
72  bool hasNonZero = false;
73  for (UInt32 i=0; i < inFramesToProcess; i++)
74  {
75  float input = *(sourceP++);
76 
77  if(input > 0)
78  hasNonZero = true;
79 
80  float absx = fabs(input);
81 
82  // a bad number!
83  if (!(absx < 1e15))
84  {
85  if (!(absx == 0))
86  {
87  //printf("\tbad sample: %f\n", input);
88  badSamplesDetected++;
89  if (zapInvalidSamples)
90  input = 0;
91  }
92  }
93  }
94 
95  return badSamplesDetected;
96 }
97 
98 
99 CFMutableDictionaryRef CreateFileRefDict (CFStringRef fKey, CFStringRef fPath, CFMutableDictionaryRef fileRefDict)
100 {
101  if (!fileRefDict)
102  fileRefDict = CFDictionaryCreateMutable (NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
103 
104  CFDictionarySetValue (fileRefDict, fKey, fPath);
105 
106  return fileRefDict;
107 }
108 
109 #if DEBUG
110 //_____________________________________________________________________________
111 //
112 void PrintAUParamEvent (AudioUnitParameterEvent& event, FILE* f)
113 {
114  bool isRamp = event.eventType == kParameterEvent_Ramped;
115  fprintf (f, "\tParamID=%ld,Scope=%ld,Element=%ld\n", (long)event.parameter, (long)event.scope, (long)event.element);
116  fprintf (f, "\tEvent Type:%s,", (isRamp ? "ramp" : "immediate"));
117  if (isRamp)
118  fprintf (f, "start=%ld,dur=%ld,startValue=%f,endValue=%f\n",
119  (long)event.eventValues.ramp.startBufferOffset, (long)event.eventValues.ramp.durationInFrames,
120  event.eventValues.ramp.startValue, event.eventValues.ramp.endValue);
121  else
122  fprintf (f, "start=%ld,value=%f\n",
123  (long)event.eventValues.immediate.bufferOffset,
124  event.eventValues.immediate.value);
125  fprintf (f, "- - - - - - - - - - - - - - - -\n");
126 }
127 #endif
128