/* @(#)cd_text.c 1.8 07/09/10 Copyright 2000-2001 Heiko Eissfeldt */
/*
* This is an include file!
*/
/*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* See the file CDDL.Schily.txt in this distribution for details.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file CDDL.Schily.txt from this distribution.
*/
/* *************** CD-Text special treatment ******************************* */
typedef struct {
unsigned char headerfield[4];
unsigned char textdatafield[12];
unsigned char crcfield[2];
} cdtextpackdata;
static unsigned short crctab[1<<8] = { /* as calculated by initcrctab() */
0x0000, 0x1021, 0x2042, 0x3063, 0x4084, 0x50a5, 0x60c6, 0x70e7,
0x8108, 0x9129, 0xa14a, 0xb16b, 0xc18c, 0xd1ad, 0xe1ce, 0xf1ef,
0x1231, 0x0210, 0x3273, 0x2252, 0x52b5, 0x4294, 0x72f7, 0x62d6,
0x9339, 0x8318, 0xb37b, 0xa35a, 0xd3bd, 0xc39c, 0xf3ff, 0xe3de,
0x2462, 0x3443, 0x0420, 0x1401, 0x64e6, 0x74c7, 0x44a4, 0x5485,
0xa56a, 0xb54b, 0x8528, 0x9509, 0xe5ee, 0xf5cf, 0xc5ac, 0xd58d,
0x3653, 0x2672, 0x1611, 0x0630, 0x76d7, 0x66f6, 0x5695, 0x46b4,
0xb75b, 0xa77a, 0x9719, 0x8738, 0xf7df, 0xe7fe, 0xd79d, 0xc7bc,
0x48c4, 0x58e5, 0x6886, 0x78a7, 0x0840, 0x1861, 0x2802, 0x3823,
0xc9cc, 0xd9ed, 0xe98e, 0xf9af, 0x8948, 0x9969, 0xa90a, 0xb92b,
0x5af5, 0x4ad4, 0x7ab7, 0x6a96, 0x1a71, 0x0a50, 0x3a33, 0x2a12,
0xdbfd, 0xcbdc, 0xfbbf, 0xeb9e, 0x9b79, 0x8b58, 0xbb3b, 0xab1a,
0x6ca6, 0x7c87, 0x4ce4, 0x5cc5, 0x2c22, 0x3c03, 0x0c60, 0x1c41,
0xedae, 0xfd8f, 0xcdec, 0xddcd, 0xad2a, 0xbd0b, 0x8d68, 0x9d49,
0x7e97, 0x6eb6, 0x5ed5, 0x4ef4, 0x3e13, 0x2e32, 0x1e51, 0x0e70,
0xff9f, 0xefbe, 0xdfdd, 0xcffc, 0xbf1b, 0xaf3a, 0x9f59, 0x8f78,
0x9188, 0x81a9, 0xb1ca, 0xa1eb, 0xd10c, 0xc12d, 0xf14e, 0xe16f,
0x1080, 0x00a1, 0x30c2, 0x20e3, 0x5004, 0x4025, 0x7046, 0x6067,
0x83b9, 0x9398, 0xa3fb, 0xb3da, 0xc33d, 0xd31c, 0xe37f, 0xf35e,
0x02b1, 0x1290, 0x22f3, 0x32d2, 0x4235, 0x5214, 0x6277, 0x7256,
0xb5ea, 0xa5cb, 0x95a8, 0x8589, 0xf56e, 0xe54f, 0xd52c, 0xc50d,
0x34e2, 0x24c3, 0x14a0, 0x0481, 0x7466, 0x6447, 0x5424, 0x4405,
0xa7db, 0xb7fa, 0x8799, 0x97b8, 0xe75f, 0xf77e, 0xc71d, 0xd73c,
0x26d3, 0x36f2, 0x0691, 0x16b0, 0x6657, 0x7676, 0x4615, 0x5634,
0xd94c, 0xc96d, 0xf90e, 0xe92f, 0x99c8, 0x89e9, 0xb98a, 0xa9ab,
0x5844, 0x4865, 0x7806, 0x6827, 0x18c0, 0x08e1, 0x3882, 0x28a3,
0xcb7d, 0xdb5c, 0xeb3f, 0xfb1e, 0x8bf9, 0x9bd8, 0xabbb, 0xbb9a,
0x4a75, 0x5a54, 0x6a37, 0x7a16, 0x0af1, 0x1ad0, 0x2ab3, 0x3a92,
0xfd2e, 0xed0f, 0xdd6c, 0xcd4d, 0xbdaa, 0xad8b, 0x9de8, 0x8dc9,
0x7c26, 0x6c07, 0x5c64, 0x4c45, 0x3ca2, 0x2c83, 0x1ce0, 0x0cc1,
0xef1f, 0xff3e, 0xcf5d, 0xdf7c, 0xaf9b, 0xbfba, 0x8fd9, 0x9ff8,
0x6e17, 0x7e36, 0x4e55, 0x5e74, 0x2e93, 0x3eb2, 0x0ed1, 0x1ef0,
};
#define SUBSIZE 18*8
static unsigned short updcrc __PR((unsigned int p_crc,
unsigned char *cp,
size_t cnt));
static unsigned short
updcrc(p_crc, cp, cnt)
unsigned int p_crc;
register unsigned char *cp;
register size_t cnt;
{
register unsigned short crc = (unsigned short)p_crc;
while (cnt--) {
crc = (crc<<8) ^ crctab[(crc>>(16-8)) ^ (*cp++)];
}
return (crc);
}
static unsigned short calcCRC __PR((unsigned char *buf, unsigned bsize));
static unsigned short
calcCRC(buf, bsize)
unsigned char *buf;
unsigned bsize;
{
return (updcrc(0x0, (unsigned char *)buf, bsize));
}
static unsigned char fliptab[8] = {
0x01,
0x02,
0x04,
0x08,
0x10,
0x20,
0x40,
0x80,
};
static int flip_error_corr __PR((unsigned char *b, int crc));
static int
flip_error_corr(b, crc)
unsigned char *b;
int crc;
{
if (crc != 0) {
int i;
for (i = 0; i < SUBSIZE; i++) {
char c;
c = fliptab[i%8];
b[i / 8] ^= c;
if ((crc = calcCRC(b, SUBSIZE/8)) == 0) {
return (crc);
}
b[i / 8] ^= c;
}
}
return (crc & 0xffff);
}
static int cdtext_crc_ok __PR((cdtextpackdata *c));
static int
cdtext_crc_ok(c)
cdtextpackdata *c;
{
int crc;
int retval;
c->crcfield[0] ^= 0xff;
c->crcfield[1] ^= 0xff;
crc = calcCRC(((unsigned char *)c), 18);
retval = (0 == flip_error_corr((unsigned char *)c, crc));
c->crcfield[0] ^= 0xff;
c->crcfield[1] ^= 0xff;
#if 0
fprintf(stderr, "%02x %02x %02x %02x ",
c->headerfield[0], c->headerfield[1],
c->headerfield[2], c->headerfield[3]);
fprintf(stderr,
"%c %c %c %c %c %c %c %c %c %c %c %c ",
c->textdatafield[0],
c->textdatafield[1],
c->textdatafield[2],
c->textdatafield[3],
c->textdatafield[4],
c->textdatafield[5],
c->textdatafield[6],
c->textdatafield[7],
c->textdatafield[8],
c->textdatafield[9],
c->textdatafield[10],
c->textdatafield[11]);
fprintf(stderr, "%02x %02x \n",
c->crcfield[0],
c->crcfield[1]);
#endif
return (retval);
}
#define DETAILED 0
#if DETAILED
static void dump_binary __PR((cdtextpackdata *c));
static void
dump_binary(c)
cdtextpackdata *c;
{
fprintf(stderr, ": header fields %02x %02x %02x ",
c->headerfield[1], c->headerfield[2], c->headerfield[3]);
fprintf(stderr,
"%02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
c->textdatafield[0],
c->textdatafield[1],
c->textdatafield[2],
c->textdatafield[3],
c->textdatafield[4],
c->textdatafield[5],
c->textdatafield[6],
c->textdatafield[7],
c->textdatafield[8],
c->textdatafield[9],
c->textdatafield[10],
c->textdatafield[11]);
}
#endif
static int process_header __PR((cdtextpackdata *c, unsigned tracknr,
int dbcc, unsigned char *line));
static int
process_header(c, tracknr, dbcc, line)
cdtextpackdata *c;
unsigned tracknr;
int dbcc;
unsigned char *line;
{
switch ((int)c->headerfield[0]) {
case 0x80: /* Title of album or track */
#if DETAILED
fprintf(stderr, "Title");
#endif
if (tracknr > 0 && tracknr < 100 &&
global.tracktitle[tracknr] == NULL) {
unsigned len;
len = strlen((char *)line);
if (len > 0)
global.tracktitle[tracknr] = malloc(len + 1);
if (global.tracktitle[tracknr] != NULL) {
memcpy(global.tracktitle[tracknr], line, len);
global.tracktitle[tracknr][len] = '\0';
}
} else if (tracknr == 0 &&
global.disctitle == NULL) {
unsigned len;
len = strlen((char *)line);
if (len > 0)
global.disctitle = malloc(len + 1);
if (global.disctitle != NULL) {
memcpy(global.disctitle, line, len);
global.disctitle[len] = '\0';
}
}
break;
case 0x81: /* Name(s) of the performer(s) */
#if DETAILED
fprintf(stderr, "Performer(s)");
#endif
if (tracknr > 0 && tracknr < 100 &&
global.trackcreator[tracknr] == NULL) {
unsigned len;
len = strlen((char *)line);
if (len > 0)
global.trackcreator[tracknr] = malloc(len + 1);
if (global.trackcreator[tracknr] != NULL) {
memcpy(global.trackcreator[tracknr], line,
len);
global.trackcreator[tracknr][len] = '\0';
}
} else if (tracknr == 0 &&
global.creator == NULL) {
unsigned len;
len = strlen((char *)line);
if (len > 0)
global.creator = malloc(len + 1);
if (global.creator != NULL) {
memcpy(global.creator, line, len);
global.creator[len] = '\0';
}
}
break;
case 0x82: /* Name(s) of the songwriter(s) */
#if DETAILED
fprintf(stderr, "Songwriter(s)");
#endif
break;
case 0x83: /* Name(s) of the composer(s) */
#if DETAILED
fprintf(stderr, "Composer(s)");
#endif
break;
case 0x84: /* Name(s) of the arranger(s) */
#if DETAILED
fprintf(stderr, "Arranger(s)");
#endif
break;
case 0x85: /* Message from content provider and/or artist */
#if DETAILED
fprintf(stderr, "Message");
#endif
break;
case 0x86: /* Disc Identification and information */
#if DETAILED
fprintf(stderr, "Disc identification");
#endif
if (tracknr == 0 && line[0] != '\0') {
fprintf(stderr, "Disc identification: %s\n", line);
}
break;
case 0x87: /* Genre Identification and information */
#if DETAILED
fprintf(stderr, "Genre identification");
#endif
break;
case 0x8e: /* UPC/EAN code or ISRC code */
#if DETAILED
fprintf(stderr, "UPC or ISRC");
#endif
if (tracknr > 0 && tracknr < 100) {
Set_ISRC(tracknr, line);
} else if (tracknr == 0 && line[0] != '\0') {
Set_MCN(line);
}
break;
case 0x88: /* Table of Content information */
#if DETAILED
fprintf(stderr, "Table of Content identification");
dump_binary(c);
#endif
return (0);
case 0x89: /* Second Table of Content information */
#if DETAILED
fprintf(stderr, "Second Table of Content identification");
dump_binary(c);
#endif
return (0);
case 0x8f: /* Size information of the block */
#if DETAILED == 0
break;
#else
switch (tracknr) {
case 0:
fprintf(outfp,
"first track is %d, last track is %d\n",
c->textdatafield[1],
c->textdatafield[2]);
if (c->textdatafield[3] & 0x80) {
fprintf(outfp,
"Program Area CD Text information available\n");
if (c->textdatafield[3] & 0x40) {
fprintf(outfp, "Program Area copy protection available\n");
}
}
if (c->textdatafield[3] & 0x07) {
fprintf(outfp,
"message information is %scopyrighted\n",
c->textdatafield[3] & 0x04 ?
"": "not ");
fprintf(outfp,
"Names of performer/songwriter/composer/arranger(s) are %scopyrighted\n",
c->textdatafield[3] & 0x02 ?
"": "not ");
fprintf(outfp,
"album and track names are %scopyrighted\n",
c->textdatafield[3] & 0x01 ?
"": "not ");
}
fprintf(outfp,
"%d packs with album/track names\n",
c->textdatafield[4]);
fprintf(outfp,
"%d packs with performer names\n",
c->textdatafield[5]);
fprintf(outfp,
"%d packs with songwriter names\n",
c->textdatafield[6]);
fprintf(outfp,
"%d packs with composer names\n",
c->textdatafield[7]);
fprintf(outfp,
"%d packs with arranger names\n",
c->textdatafield[8]);
fprintf(outfp,
"%d packs with artist or content provider messages\n",
c->textdatafield[9]);
fprintf(outfp,
"%d packs with disc identification information\n",
c->textdatafield[10]);
fprintf(outfp,
"%d packs with genre identification/information\n",
c->textdatafield[11]);
break;
case 1:
fprintf(outfp,
"%d packs with table of contents information\n",
c->textdatafield[0]);
fprintf(outfp,
"%d packs with second table of contents information\n",
c->textdatafield[1]);
fprintf(outfp,
"%d packs with reserved information\n",
c->textdatafield[2]);
fprintf(outfp,
"%d packs with reserved information\n",
c->textdatafield[3]);
fprintf(outfp,
"%d packs with reserved information\n",
c->textdatafield[4]);
fprintf(outfp,
"%d packs with closed information\n",
c->textdatafield[5]);
fprintf(outfp,
"%d packs with UPC/EAN ISRC information\n",
c->textdatafield[6]);
fprintf(outfp,
"%d packs with size information\n",
c->textdatafield[7]);
fprintf(outfp,
"last sequence numbers for blocks 1-8: %d %d %d %d ",
c->textdatafield[8],
c->textdatafield[9],
c->textdatafield[10],
c->textdatafield[11]);
break;
case 2:
fprintf(outfp, "%d %d %d %d\n",
c->textdatafield[0],
c->textdatafield[1],
c->textdatafield[2],
c->textdatafield[3]);
fprintf(outfp,
"Language codes for blocks 1-8: %d %d %d %d %d %d %d %d\n",
c->textdatafield[4],
c->textdatafield[5],
c->textdatafield[6],
c->textdatafield[7],
c->textdatafield[8],
c->textdatafield[9],
c->textdatafield[10],
c->textdatafield[11]);
break;
}
fprintf(stderr, "Blocksize");
dump_binary(c);
return (0);
#if !defined DEBUG_CDTEXT
default:
#else
}
#endif
fprintf(stderr, ": header fields %02x %02x %02x ",
c->headerfield[1], c->headerfield[2],
c->headerfield[3]);
#endif /* DETAILED */
#if !defined DEBUG_CDTEXT
}
#if DETAILED
if (tracknr == 0) {
fprintf(stderr, " for album : ->");
} else {
fprintf(stderr, " for track %2u: ->", tracknr);
}
fputs((char *)line, stderr);
fputs("<-", stderr);
#endif
if (dbcc != 0) {
#else
{
#endif
/* EMPTY */
#if DETAILED
fprintf(stderr,
" %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",
c->textdatafield[0],
c->textdatafield[1],
c->textdatafield[2],
c->textdatafield[3],
c->textdatafield[4],
c->textdatafield[5],
c->textdatafield[6],
c->textdatafield[7],
c->textdatafield[8],
c->textdatafield[9],
c->textdatafield[10],
c->textdatafield[11]);
#endif
}
return (0);
}
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