1 files changed, 108 insertions, 0 deletions
diff --git a/src/metadata/wav/wavproperties.cpp b/src/metadata/wav/wavproperties.cpp
new file mode 100644
index 0000000..20ba1ab
--- /dev/null
+++ b/src/metadata/wav/wavproperties.cpp
@@ -0,0 +1,108 @@
+/***************************************************************************
+    copyright            : (C) 2006 by Martin Aumueller
+    email                : aumuell@reserv.at
+
+    copyright            : (C) 2005 by Andy Leadbetter
+    email                : andrew.leadbetter@gmail.com
+                           (original mp4 implementation)
+ ***************************************************************************/
+
+/***************************************************************************
+ *   This library is free software; you can redistribute it and/or modify  *
+ *   it  under the terms of the GNU Lesser General Public License version  *
+ *   2.1 as published by the Free Software Foundation.                     *
+ *                                                                         *
+ *   This library is distributed in the hope that it will be useful, but   *
+ *   WITHOUT ANY WARRANTY; without even the implied warranty of            *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
+ *   Lesser General Public License for more details.                       *
+ *                                                                         *
+ *   You should have received a copy of the GNU Lesser General Public      *
+ *   License along with this library; if not, write to the Free Software   *
+ *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,            *
+ *   MA  02110-1301  USA                                                   *
+ ***************************************************************************/
+
+#include <stdio.h>
+
+#include "wavproperties.h"
+
+#include <taglib/tstring.h>
+
+#include "wavfile.h"
+
+#include <netinet/in.h> // ntohl
+
+using namespace TagLib;
+
+struct WavHeader
+{
+    uint32_t       riff_id;
+    uint32_t       riff_size;
+    uint32_t       wave_id;
+    uint32_t       format_id;
+    uint32_t       format_size;
+    uint16_t       format_tag;
+    uint16_t       num_channels;
+    uint32_t       num_samples_per_sec;
+    uint32_t       num_avg_bytes_per_sec;
+    uint16_t       num_block_align;
+    uint16_t       bits_per_sample;
+    uint32_t       data_id;
+    uint32_t       num_data_bytes;
+};
+
+
+////////////////////////////////////////////////////////////////////////////////
+// public members
+////////////////////////////////////////////////////////////////////////////////
+
+Wav::Properties::Properties(Properties::ReadStyle style) : AudioProperties(style)
+{
+    m_length = 0;
+    m_bitrate = 0;
+    m_sampleRate = 0;
+    m_channels = 0;
+}
+
+Wav::Properties::~Properties()
+{
+}
+
+int Wav::Properties::length() const
+{
+    return m_length;
+}
+
+int Wav::Properties::bitrate() const
+{
+    return m_bitrate;
+}
+
+int Wav::Properties::sampleRate() const
+{
+    return m_sampleRate;
+}
+
+int Wav::Properties::channels() const
+{
+    return m_channels;
+}
+
+#define swap16(x) ((((x)&0xff00)>>8) | (((x)&0x00ff)<<8))
+#define swap32(x) ((swap16((x)&0x0000ffff)<<16) | swap16(((x)&0xffff0000)>>16))
+
+void Wav::Properties::readWavProperties( FILE *fp )
+{
+    fseek(fp, 0, SEEK_SET );
+    WavHeader header;
+    if( fread(&header, sizeof(header), 1, fp) != 1 )
+    {
+        return;
+    }
+
+    m_channels = ntohs(swap16(header.num_channels));
+    m_sampleRate = ntohl(swap32(header.num_samples_per_sec));
+    m_bitrate = ntohl(swap32(header.num_avg_bytes_per_sec)) * 8 / 1000;
+    m_length = ntohl(swap32(header.num_data_bytes))/ntohl(swap32(header.num_avg_bytes_per_sec));
+}