Fix reading of WavPack streams without a length information in the header

When the WavPack's total_samples header fiels contains -1, try to find
the final block and get the number of samples from there as
block_index + block_samples.

BUG:258016


git-svn-id: svn://anonsvn.kde.org/home/kde/trunk/kdesupport/taglib@1201476 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

tests/CMakeLists.txt

@@ -18,6 +18,7 @@ INCLUDE_DIRECTORIES(
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/ogg/vorbis
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/ogg/flac
   ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/flac
+  ${CMAKE_CURRENT_SOURCE_DIR}/../taglib/wavpack
 )
 
 SET(test_runner_SRCS
@@ -42,6 +43,7 @@ SET(test_runner_SRCS
   test_ape.cpp
   test_apetag.cpp
   test_wav.cpp
+  test_wavpack.cpp
 )
 IF(WITH_MP4)
    SET(test_runner_SRCS ${test_runner_SRCS}

tests/Makefile.am

@@ -12,7 +12,8 @@ INCLUDES = \
         -I$(top_srcdir)/taglib/flac \
         -I$(top_srcdir)/taglib/riff \
         -I$(top_srcdir)/taglib/riff/aiff \
-        -I$(top_srcdir)/taglib/mpeg/id3v2/frames
+        -I$(top_srcdir)/taglib/mpeg/id3v2/frames \
+        -I$(top_srcdir)/taglib/wavpack
 
 test_runner_SOURCES = \
 	main.cpp \
@@ -32,7 +33,8 @@ test_runner_SOURCES = \
 	test_aiff.cpp \
 	test_ogg.cpp \
 	test_oggflac.cpp \
-	test_flac.cpp
+	test_flac.cpp \
+	test_wavpack.cpp
 
 if build_tests
 TESTS = test_runner

tests/test_wavpack.cpp

@@ -0,0 +1,28 @@
+#include <cppunit/extensions/HelperMacros.h>
+#include <string>
+#include <stdio.h>
+#include <tag.h>
+#include <tbytevectorlist.h>
+#include <wavpackfile.h>
+#include "utils.h"
+
+using namespace std;
+using namespace TagLib;
+
+class TestWavPack : public CppUnit::TestFixture
+{
+  CPPUNIT_TEST_SUITE(TestWavPack);
+  CPPUNIT_TEST(testLengthScan);
+  CPPUNIT_TEST_SUITE_END();
+
+public:
+
+  void testLengthScan()
+  {
+    WavPack::File f("data/no_length.wv");
+    CPPUNIT_ASSERT_EQUAL(4, f.audioProperties()->length());
+  }
+
+};
+
+CPPUNIT_TEST_SUITE_REGISTRATION(TestWavPack);