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List:       kde-commits
Subject:    kdesupport/taglib
From:       Lukáš Lalinský <lalinsky () gmail ! com>
Date:       2010-07-11 9:47:59
Message-ID: 20100711094759.41F32AC85F () svn ! kde ! org
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SVN commit 1148614 by lalinsky:

Added reading of WAV audio length

BUG:116033


 M  +2 -1      NEWS  
 M  +5 -0      taglib/riff/rifffile.cpp  
 M  +5 -0      taglib/riff/rifffile.h  
 M  +8 -1      taglib/riff/wav/wavfile.cpp  
 M  +15 -7     taglib/riff/wav/wavproperties.cpp  
 M  +7 -0      taglib/riff/wav/wavproperties.h  
 M  +2 -0      tests/CMakeLists.txt  
 AM            tests/data/empty.wav  
 M  +2 -0      tests/test_riff.cpp  


--- trunk/kdesupport/taglib/NEWS #1148613:1148614
@@ -1,9 +1,10 @@
 TagLib 1.7
 ==========
 
- * Support for reading/writing tags from Monkey's Audio files.
+ * Support for reading/writing tags from Monkey's Audio files. (BUG:210404)
  * Implemented APE::Tag::isEmpty() to check for all APE tags, not just the
    basic ones.
+ * Added reading of WAV audio length. (BUG:116033)
 
 TagLib 1.6.3 (Apr 17, 2010)
 ===========================
--- trunk/kdesupport/taglib/taglib/riff/rifffile.cpp #1148613:1148614
@@ -79,6 +79,11 @@
   return d->chunkNames.size();
 }
 
+TagLib::uint RIFF::File::chunkDataSize(uint i) const
+{
+  return d->chunkSizes[i];
+}
+
 TagLib::uint RIFF::File::chunkOffset(uint i) const
 {
   return d->chunkOffsets[i];
--- trunk/kdesupport/taglib/taglib/riff/rifffile.h #1148613:1148614
@@ -68,6 +68,11 @@
       uint chunkOffset(uint i) const;
 
       /*!
+       * \return The size of the chunk data.
+       */
+      uint chunkDataSize(uint i) const;
+
+      /*!
        * \return The name of the specified chunk, for instance, "COMM" or "ID3 "
        */
       ByteVector chunkName(uint i) const;
--- trunk/kdesupport/taglib/taglib/riff/wav/wavfile.cpp #1148613:1148614
@@ -96,13 +96,20 @@
 
 void RIFF::WAV::File::read(bool readProperties, Properties::ReadStyle \
propertiesStyle)  {
+  ByteVector formatData;
+  uint streamLength = 0;
   for(uint i = 0; i < chunkCount(); i++) {
     if(chunkName(i) == "ID3 ")
       d->tag = new ID3v2::Tag(this, chunkOffset(i));
     else if(chunkName(i) == "fmt " && readProperties)
-      d->properties = new Properties(chunkData(i), propertiesStyle);
+      formatData = chunkData(i);
+    else if(chunkName(i) == "data" && readProperties)
+      streamLength = chunkDataSize(i);
   }
 
+  if(!formatData.isEmpty())
+    d->properties = new Properties(formatData, streamLength, propertiesStyle);
+
   if(!d->tag)
     d->tag = new ID3v2::Tag;
 }
--- trunk/kdesupport/taglib/taglib/riff/wav/wavproperties.cpp #1148613:1148614
@@ -35,12 +35,13 @@
 class RIFF::WAV::Properties::PropertiesPrivate
 {
 public:
-  PropertiesPrivate() :
+  PropertiesPrivate(uint streamLength = 0) :
     format(0),
     length(0),
     bitrate(0),
     sampleRate(0),
-    channels(0)
+    channels(0),
+	streamLength(streamLength)
   {
 
   }
@@ -50,6 +51,7 @@
   int bitrate;
   int sampleRate;
   int channels;
+  uint streamLength;
 };
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -58,10 +60,16 @@
 
 RIFF::WAV::Properties::Properties(const ByteVector &data, ReadStyle style) : \
AudioProperties(style)  {
-  d = new PropertiesPrivate;
+  d = new PropertiesPrivate();
   read(data);
 }
 
+RIFF::WAV::Properties::Properties(const ByteVector &data, uint streamLength, \
ReadStyle style) : AudioProperties(style) +{
+  d = new PropertiesPrivate(streamLength);
+  read(data);
+}
+
 RIFF::WAV::Properties::~Properties()
 {
   delete d;
@@ -96,9 +104,9 @@
   d->format     = data.mid(0, 2).toShort(false);
   d->channels   = data.mid(2, 2).toShort(false);
   d->sampleRate = data.mid(4, 4).toUInt(false);
-  d->bitrate    = data.mid(8, 4).toUInt(false) * 8 / 1024;
 
-  // short bitsPerSample = data.mid(10, 2).toShort();
-  // d->bitrate    = (sampleRate * sampleSize * d->channels) / 1024.0;
-  // d->length     = sampleFrames / d->sampleRate;
+  uint byteRate = data.mid(8, 4).toUInt(false);
+  d->bitrate = byteRate * 8 / 1024;
+
+  d->length = byteRate > 0 ? d->streamLength / byteRate : 0;
 }
--- trunk/kdesupport/taglib/taglib/riff/wav/wavproperties.h #1148613:1148614
@@ -26,6 +26,7 @@
 #ifndef TAGLIB_WAVPROPERTIES_H
 #define TAGLIB_WAVPROPERTIES_H
 
+#include "taglib.h"
 #include "audioproperties.h"
 
 namespace TagLib {
@@ -55,6 +56,12 @@
 	Properties(const ByteVector &data, ReadStyle style);
 
 	/*!
+	 * Create an instance of WAV::Properties with the data read from the
+	 * ByteVector \a data and the length calculated using \a streamLength.
+	 */
+	Properties(const ByteVector &data, uint streamLength, ReadStyle style);
+
+	/*!
 	 * Destroys this WAV::Properties instance.
 	 */
 	virtual ~Properties();
--- trunk/kdesupport/taglib/tests/CMakeLists.txt #1148613:1148614
@@ -12,6 +12,7 @@
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/mp4
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/riff
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/riff/aiff
+  ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/riff/wav
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/trueaudio
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/ogg
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/ogg/vorbis
@@ -40,6 +41,7 @@
   test_flac.cpp
   test_ape.cpp
   test_apetag.cpp
+  test_wav.cpp
 )
 IF(WITH_MP4)
    SET(test_runner_SRCS ${test_runner_SRCS}
--- trunk/kdesupport/taglib/tests/test_riff.cpp #1148613:1148614
@@ -15,6 +15,7 @@
   PublicRIFF(FileName file) : RIFF::File(file, BigEndian) {};
   TagLib::uint chunkCount() { return RIFF::File::chunkCount(); };
   TagLib::uint chunkOffset(TagLib::uint i) { return RIFF::File::chunkOffset(i); };
+  TagLib::uint chunkDataSize(TagLib::uint i) { return RIFF::File::chunkDataSize(i); \
};  ByteVector chunkName(TagLib::uint i) { return RIFF::File::chunkName(i); };
   ByteVector chunkData(TagLib::uint i) { return RIFF::File::chunkData(i); };
   void setChunkData(const ByteVector &name, const ByteVector &data) {
@@ -48,6 +49,7 @@
     f = new PublicRIFF(filename.c_str());
     CPPUNIT_ASSERT_EQUAL(ByteVector("TEST"), f->chunkName(2));
     CPPUNIT_ASSERT_EQUAL(ByteVector("foo"), f->chunkData(2));
+    CPPUNIT_ASSERT_EQUAL(TagLib::uint(3), f->chunkDataSize(2));
     CPPUNIT_ASSERT_EQUAL(TagLib::uint(0x1728 + 8), f->chunkOffset(2));
 
     f->setChunkData("SSND", "abcd");


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