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//=============================================================================
//
// File : mp_mp3.h
// Creation date : Fri Mar 25 20:01:25 2005 GMT by Szymon Stefanek
//
// This file is part of the KVirc irc client distribution
// Copyright (C) 2005 Szymon Stefanek (pragma at kvirc dot net)
//
// This file is based on the mp3tech.h. It is released under the original
// license and the original copyright notice follows.
//
// mp3tech.h
//
// Copyright (C) 2000 Cedric Tefft <cedric@earthling.net>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// This file is based in part on:
//
// * MP3Info 0.5 by Ricardo Cerqueira <rmc@rccn.net>
// * MP3Stat 0.9 by Ed Sweetman <safemode@voicenet.com> and
// Johannes Overmann <overmann@iname.com>
//
// There has been also a remarkable work by Cristopher Tieckle (Crissi)
//
//=============================================================================
// MIN_CONSEC_GOOD_FRAMES defines how many consecutive valid MP3 frames
// we need to see before we decide we are looking at a real MP3 file
#define MIN_CONSEC_GOOD_FRAMES 4
#define FRAME_HEADER_SIZE 4
#define MIN_FRAME_SIZE 21
#define NUM_SAMPLES 4
#define TEXT_FIELD_LEN 30
#define INT_FIELD_LEN 4
#include "kvi_settings.h"
#include <stdio.h>
#include <stdlib.h>
#include <qstring.h>
#ifdef COMPILE_ON_WINDOWS
#include <windows.h>
#else
#include <unistd.h>
#include <sys/stat.h>
#include <ctype.h>
#include <string.h>
#endif
enum VBR_REPORT { VBR_VARIABLE, VBR_AVERAGE, VBR_MEDIAN };
typedef struct {
unsigned int sync;
unsigned int version;
unsigned int layer;
unsigned int crc;
unsigned int bitrate;
unsigned int freq;
unsigned int padding;
unsigned int extension;
unsigned int mode;
unsigned int mode_extension;
unsigned int copyright;
unsigned int original;
unsigned int emphasis;
} mp3header;
typedef struct {
char title[31];
char artist[31];
char album[31];
char year[5];
char comment[31];
unsigned char track[1];
unsigned char genre[1];
} id3tag;
typedef struct {
QString filename;
FILE *file;
unsigned int datasize;
int header_isvalid;
mp3header header;
int id3_isvalid;
id3tag id3;
int vbr;
float vbr_average;
int seconds;
int frames;
int badframes;
} mp3info;
// mode field:
// 00 - Stereo
// 01 - Joint stereo (Stereo)
// 10 - Dual channel (2 mono channels)
// 11 - Single channel (Mono)
bool scan_mp3_file(QString& szFileName,mp3info * i);
void resetmp3infoStruct(mp3info *i);
int header_channels(mp3header *h);
int header_frequency(mp3header *h);
const char *header_emphasis(mp3header *h);
const char *header_mode(mp3header *h);
int header_layer(mp3header *h);
int header_bitrate(mp3header *h);
double header_version(mp3header *h);
int header_crc(mp3header *h);
int get_header(FILE *file,mp3header *header);
int frame_length(mp3header *header);
int sameConstant(mp3header *h1, mp3header *h2);
int get_mp3_info(mp3info *mp3);
int get_id3(mp3info *mp3);
char *pad(char *string, int length);
char *unpad(char *string);
int get_first_header(mp3info *mp3,long startpos);
//void tagedit_curs(char *filename, int filenum, int fileoutof, id3tag *tag);
const char * get_typegenre(int idx);
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