/***************************************************************************    copyright            : (C) 2006 by Luká? Lalinsky    email                : lalinsky@gmail.com        copyright            : (C) 2004 by Allan Sandfeld Jensen     email                : kde@carewolf.org                            (original MPC 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 <tstring.h>#if 0#include <tdebug.h>#endif#include <bitset>#include "wvproperties.h"#include "wvfile.h"using namespace TagLib;class WavPack::Properties::PropertiesPrivate{public:  PropertiesPrivate(const ByteVector &d, long length, ReadStyle s) :    data(d),    streamLength(length),     style(s),    length(0),    bitrate(0),    sampleRate(0),    channels(0),    version(0),    bitsPerSample(0) {}  ByteVector data;  long streamLength;   ReadStyle style;  int length;  int bitrate;  int sampleRate;  int channels;  int version;  int bitsPerSample;};////////////////////////////////////////////////////////////////////////////////// public members////////////////////////////////////////////////////////////////////////////////WavPack::Properties::Properties(const ByteVector &data, long streamLength, ReadStyle style) : AudioProperties(style){  d = new PropertiesPrivate(data, streamLength, style);  read();}WavPack::Properties::~Properties(){  delete d;}int WavPack::Properties::length() const{  return d->length;}int WavPack::Properties::bitrate() const{  return d->bitrate;}int WavPack::Properties::sampleRate() const{  return d->sampleRate;}int WavPack::Properties::channels() const{  return d->channels;}int WavPack::Properties::version() const{  return d->version;}int WavPack::Properties::bitsPerSample() const{  return d->bitsPerSample;}////////////////////////////////////////////////////////////////////////////////// private members////////////////////////////////////////////////////////////////////////////////static const unsigned int sample_rates[] = { 6000, 8000, 9600, 11025, 12000,    16000, 22050, 24000, 32000, 44100, 48000, 64000, 88200, 96000, 192000 };#define BYTES_STORED    3#define MONO_FLAG       4    #define SHIFT_LSB       13#define SHIFT_MASK      (0x1fL << SHIFT_LSB)#define SRATE_LSB       23#define SRATE_MASK      (0xfL << SRATE_LSB)    void WavPack::Properties::read(){  if(!d->data.startsWith("wvpk"))    return;  d->version = d->data.mid(8, 2).toShort(false);    unsigned int flags = d->data.mid(24, 4).toUInt(false);  d->bitsPerSample = ((flags & BYTES_STORED) + 1) * 8 -    ((flags & SHIFT_MASK) >> SHIFT_LSB);  d->sampleRate = sample_rates[(flags & SRATE_MASK) >> SRATE_LSB];  d->channels = (flags & MONO_FLAG) ? 1 : 2;    unsigned int samples = d->data.mid(12, 4).toUInt(false);  d->length = d->sampleRate > 0 ? (samples + (d->sampleRate / 2)) / d->sampleRate : 0;    d->bitrate = d->length > 0 ? ((d->streamLength * 8L) / d->length) / 1000 : 0;}