Jamoma API  0.6.0.a19
CAAudioFileFormats.h
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41 #ifndef __CAAudioFileFormats_h__
42 #define __CAAudioFileFormats_h__
43 
44 #if !defined(__COREAUDIO_USE_FLAT_INCLUDES__)
45  #include <AudioToolbox/AudioToolbox.h>
46 #else
47  #include <AudioToolbox.h>
48 #endif
49 #include "CAStreamBasicDescription.h"
50 
51 class CAAudioFileFormats {
52 public:
53  enum { noErr = 0 };
54 
55  struct DataFormatInfo {
56  DataFormatInfo() : mVariants(NULL) { }
57  ~DataFormatInfo() { delete[] mVariants; }
58 
59  UInt32 mFormatID;
60  int mNumVariants;
61  AudioStreamBasicDescription * mVariants;
62  bool mReadable;
63  bool mWritable;
64  bool mEitherEndianPCM;
65 
66 #if DEBUG
67  void DebugPrint();
68 #endif
69  };
70 
71  struct FileFormatInfo {
72  FileFormatInfo() : mFileTypeName(NULL), mExtensions(NULL), mDataFormats(NULL) { }
73  ~FileFormatInfo() {
74  delete[] mDataFormats;
75  if (mFileTypeName)
76  CFRelease(mFileTypeName);
77  if (mExtensions)
78  CFRelease(mExtensions);
79  }
80 
81  AudioFileTypeID mFileTypeID;
82  CFStringRef mFileTypeName;
83  CFArrayRef mExtensions;
84  int mNumDataFormats;
85  DataFormatInfo * mDataFormats; // NULL until loaded!
86 
87  int NumberOfExtensions() { return mExtensions ? CFArrayGetCount(mExtensions) : 0; }
88  char * GetExtension(int index, char *buf, int buflen) {
89  CFStringRef cfext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, index);
90  CFStringGetCString(cfext, buf, buflen, kCFStringEncodingUTF8);
91  return buf;
92  }
93  bool MatchExtension(CFStringRef testExt) { // testExt should not include "."
94  CFIndex n = NumberOfExtensions();
95  for (CFIndex i = 0; i < n; ++i) {
96  CFStringRef ext = (CFStringRef)CFArrayGetValueAtIndex(mExtensions, i);
97  if (CFStringCompare(ext, testExt, kCFCompareCaseInsensitive) == kCFCompareEqualTo)
98  return true;
99  }
100  return false;
101  }
102  bool AnyWritableFormats();
103  void LoadDataFormats();
104 
105 #if DEBUG
106  void DebugPrint();
107 #endif
108  };
109 
110 private: // use Instance()
111  CAAudioFileFormats(bool loadDataFormats);
112  ~CAAudioFileFormats();
113 public:
114 
115  bool InferDataFormatFromFileFormat(AudioFileTypeID filetype, CAStreamBasicDescription &fmt);
116 
117  bool InferFileFormatFromFilename(const char *filename, AudioFileTypeID &filetype);
118 
119  bool InferFileFormatFromFilename(CFStringRef filename, AudioFileTypeID &filetype);
120 
121  bool InferFileFormatFromDataFormat(const CAStreamBasicDescription &fmt, AudioFileTypeID &filetype);
122 
123  bool IsKnownDataFormat(UInt32 dataFormat);
124 
125 #if DEBUG
126  void DebugPrint();
127 #endif
128 
129  int mNumFileFormats;
130  FileFormatInfo * mFileFormats;
131 
132  FileFormatInfo * FindFileFormat(UInt32 formatID);
133 
134  static CAAudioFileFormats * Instance(bool loadDataFormats=true);
135 
136 private:
137  static CAAudioFileFormats * sInstance;
138 };
139 
140 char * OSTypeToStr(char *buf, UInt32 t);
141 int StrToOSType(const char *str, UInt32 &t);
142 
143 #endif // __CAAudioFileFormats_h__