Add support for AIFF-C files.

taglib/fileref.cpp

@@ -265,7 +265,7 @@ File *FileRef::create(FileName fileName, bool readAudioProperties,
       return new MP4::File(fileName, readAudioProperties, audioPropertiesStyle);
     if(ext == "WMA" || ext == "ASF")
       return new ASF::File(fileName, readAudioProperties, audioPropertiesStyle);
-    if(ext == "AIF" || ext == "AIFF")
+    if(ext == "AIF" || ext == "AIFF" || ext == "AFC" || ext == "AIFC")
       return new RIFF::AIFF::File(fileName, readAudioProperties, audioPropertiesStyle);
     if(ext == "WAV")
       return new RIFF::WAV::File(fileName, readAudioProperties, audioPropertiesStyle);

taglib/riff/aiff/aiffproperties.cpp

@@ -38,16 +38,17 @@ public:
     sampleRate(0),
     channels(0),
     sampleWidth(0),
-    sampleFrames(0)
-  {
-
-  }
+    sampleFrames(0) {}
 
   int length;
   int bitrate;
   int sampleRate;
   int channels;
   int sampleWidth;
+
+  ByteVector compressionType;
+  String compressionName;
+
   uint sampleFrames;
 };
 
@@ -96,12 +97,31 @@ TagLib::uint RIFF::AIFF::Properties::sampleFrames() const
   return d->sampleFrames;
 }
 
+bool RIFF::AIFF::Properties::isAiffC() const
+{
+  return (!d->compressionType.isEmpty());
+}
+
+ByteVector RIFF::AIFF::Properties::compressionType() const
+{
+  return d->compressionType;
+}
+
+String RIFF::AIFF::Properties::compressionName() const
+{
+  return d->compressionName;
+}
 ////////////////////////////////////////////////////////////////////////////////
 // private members
 ////////////////////////////////////////////////////////////////////////////////
 
 void RIFF::AIFF::Properties::read(const ByteVector &data)
 {
+  if(data.size() < 18) {
+    debug("RIFF::AIFF::Properties::read() - \"COMM\" chunk is too short for AIFF.");
+    return;
+  }
+
   d->channels       = data.toShort(0U);
   d->sampleFrames   = data.toUInt(2U);
   d->sampleWidth    = data.toShort(6U);
@@ -109,4 +129,9 @@ void RIFF::AIFF::Properties::read(const ByteVector &data)
   d->sampleRate     = (int)sampleRate;
   d->bitrate        = (int)((sampleRate * d->sampleWidth * d->channels) / 1000.0);
   d->length         = d->sampleRate > 0 ? d->sampleFrames / d->sampleRate : 0;
+
+  if(data.size() >= 23) {
+    d->compressionType = data.mid(18, 4);
+    d->compressionName = String(data.mid(23, static_cast<uchar>(data[22])));
+  }
 }

taglib/riff/aiff/aiffproperties.h

@@ -67,6 +67,30 @@ namespace TagLib {
         int sampleWidth() const;
         uint sampleFrames() const;
 
+        /*!
+         * Returns true if the file is in AIFF-C format, false if AIFF format.
+         */
+        bool isAiffC() const;
+
+        /*!
+         * Returns the compression type of the AIFF-C file.  For example, "NONE" for
+         * not compressed, "ACE2" for ACE 2-to-1.
+         *
+         * If the file is in AIFF format, always returns an empty vector.
+         *
+         * \see isAiffC()
+         */
+        ByteVector compressionType() const;
+
+        /*!
+         * Returns the concrete compression name of the AIFF-C file.
+         *
+         * If the file is in AIFF format, always returns an empty string.
+         *
+         * \see isAiffC()
+         */
+        String compressionName() const;
+
       private:
         Properties(const Properties &);
         Properties &operator=(const Properties &);