/***************************************************************************    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 "wavproperties.h"#include <taglib/tstring.h>#include "wavfile.h"#include <netinet/in.h> // ntohlusing 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));}