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/*
$Id: cdtext.c,v 1.1 2005/01/01 02:43:57 rockyb Exp $
Copyright (C) 2004 Rocky Bernstein <rocky@panix.com>
toc reading routine adapted from cuetools
Copyright (C) 2003 Svend Sanjay Sorensen <ssorensen@fastmail.fm>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <cdio/cdtext.h>
#include <cdio/logging.h>
#include "cdtext_private.h"
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
/*! Note: the order and number items (except CDTEXT_INVALID) should
match the cdtext_field_t enumeration. */
const char *cdtext_keywords[] =
{
"ARRANGER",
"COMPOSER",
"DISC_ID",
"GENRE",
"ISRC",
"MESSAGE",
"PERFORMER",
"SIZE_INFO",
"SONGWRITER",
"TITLE",
"TOC_INFO",
"TOC_INFO2",
"UPC_EAN",
};
/*! Return string representation of the enum values above */
const char *
cdtext_field2str (cdtext_field_t i)
{
if (i >= MAX_CDTEXT_FIELDS)
return "Invalid CDTEXT field index";
else
return cdtext_keywords[i];
}
/*! Free memory assocated with cdtext*/
void
cdtext_destroy (cdtext_t *cdtext)
{
cdtext_field_t i;
for (i=0; i < MAX_CDTEXT_FIELDS; i++) {
if (cdtext->field[i]) free(cdtext->field[i]);
}
}
/*!
returns the CDTEXT value associated with key. NULL is returned
if key is CDTEXT_INVALID or the field is not set.
*/
const char *
cdtext_get (cdtext_field_t key, const cdtext_t *cdtext)
{
if (key == CDTEXT_INVALID) return NULL;
return cdtext->field[key];
}
/*! Initialize a new cdtext structure.
When the structure is no longer needed, release the
resources using cdtext_delete.
*/
void
cdtext_init (cdtext_t *cdtext)
{
cdtext_field_t i;
for (i=0; i < MAX_CDTEXT_FIELDS; i++) {
cdtext->field[i] = NULL;
}
}
/*!
returns 0 if field is a CD-TEXT keyword, returns non-zero otherwise
*/
cdtext_field_t
cdtext_is_keyword (const char *key)
{
#if 0
char *item;
item = bsearch(key,
cdtext_keywords, 12,
sizeof (char *),
(int (*)(const void *, const void *))
strcmp);
return (NULL != item) ? 0 : 1;
#else
unsigned int i;
for (i = 0; i < 13 ; i++)
if (0 == strcmp (cdtext_keywords[i], key)) {
return i;
}
return CDTEXT_INVALID;
#endif
}
/*! sets cdtext's keyword entry to field.
*/
void
cdtext_set (cdtext_field_t key, const char *value, cdtext_t *cdtext)
{
if (NULL == value || key == CDTEXT_INVALID) return;
if (cdtext->field[key]) free (cdtext->field[key]);
cdtext->field[key] = strdup (value);
}
#define SET_CDTEXT_FIELD(FIELD) \
(*set_cdtext_field_fn)(user_data, i_track, i_first_track, FIELD, buffer);
/*
parse all CD-TEXT data retrieved.
*/
bool
cdtext_data_init(void *user_data, track_t i_first_track,
unsigned char *wdata,
set_cdtext_field_fn_t set_cdtext_field_fn)
{
CDText_data_t *pdata;
int i;
int j;
char buffer[256];
int idx;
int i_track;
bool b_ret = false;
memset( buffer, 0x00, sizeof(buffer) );
idx = 0;
pdata = (CDText_data_t *) (&wdata[4]);
for( i=0; i < CDIO_CDTEXT_MAX_PACK_DATA; i++ ) {
#if TESTED
if ( pdata->bDBC ) {
cdio_warn("Double-byte characters not supported");
return false;
}
#endif
if( pdata->seq != i )
break;
if( (pdata->type >= 0x80)
&& (pdata->type <= 0x85) && (pdata->block == 0) ) {
i_track = pdata->i_track;
for( j=0; j < CDIO_CDTEXT_MAX_TEXT_DATA; j++ ) {
if( pdata->text[j] == 0x00 ) {
bool b_field_set=true;
switch( pdata->type) {
case CDIO_CDTEXT_TITLE:
SET_CDTEXT_FIELD(CDTEXT_TITLE);
break;
case CDIO_CDTEXT_PERFORMER:
SET_CDTEXT_FIELD(CDTEXT_PERFORMER);
break;
case CDIO_CDTEXT_SONGWRITER:
SET_CDTEXT_FIELD(CDTEXT_SONGWRITER);
break;
case CDIO_CDTEXT_COMPOSER:
SET_CDTEXT_FIELD(CDTEXT_COMPOSER);
break;
case CDIO_CDTEXT_ARRANGER:
SET_CDTEXT_FIELD(CDTEXT_ARRANGER);
break;
case CDIO_CDTEXT_MESSAGE:
SET_CDTEXT_FIELD(CDTEXT_MESSAGE);
break;
case CDIO_CDTEXT_DISCID:
SET_CDTEXT_FIELD(CDTEXT_DISCID);
break;
case CDIO_CDTEXT_GENRE:
SET_CDTEXT_FIELD(CDTEXT_GENRE);
break;
default : b_field_set = false;
}
if (b_field_set) {
b_ret = true;
i_track++;
idx = 0;
}
} else {
buffer[idx++] = pdata->text[j];
}
buffer[idx] = 0x00;
}
}
pdata++;
}
return b_ret;
}
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