a20dbc952c
* discid field extraction * genre field extraction (experimental) * blocksize field extraction * read charcode from blocksize field * some unneeded comments removed * unneeded local variables removed * typos
359 lines
9.2 KiB
C
359 lines
9.2 KiB
C
/*
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Copyright (C) 2004, 2005, 2008, 2011 Rocky Bernstein <rocky@gnu.org>
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toc reading routine adapted from cuetools
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Copyright (C) 2003 Svend Sanjay Sorensen <ssorensen@fastmail.fm>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <cdio/cdtext.h>
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#include <cdio/logging.h>
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#include "cdtext_private.h"
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <stdio.h>
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/*! Note: the order and number items (except CDTEXT_INVALID) should
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match the cdtext_field_t enumeration. */
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static const char cdtext_keywords[][16] =
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{
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"ARRANGER",
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"COMPOSER",
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"DISC_ID",
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"GENRE",
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"MESSAGE",
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"ISRC",
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"PERFORMER",
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"SIZE_INFO",
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"SONGWRITER",
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"TITLE",
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"TOC_INFO",
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"TOC_INFO2",
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"UPC_EAN",
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};
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static const char cdtext_genre[][30] =
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{
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"Not Used",
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"Not Defined",
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"Adult Contemporary",
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"Alternative Rock",
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"Childrens Music",
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"Classical",
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"Contemporary Christian",
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"Country",
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"Dance",
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"Easy Listening",
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"Erotic",
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"Folk",
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"Gospel",
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"Hip Hop",
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"Jazz",
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"Latin",
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"Musical",
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"New Age",
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"Opera",
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"Operetta",
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"Pop Music",
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"Rap",
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"Reggae",
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"Rock Music",
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"Rhythm & Blues",
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"Sound Effects",
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"Spoken Word",
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"World Music"
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} ;
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/*! Return string representation of the enum values above */
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const char *
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cdtext_field2str (cdtext_field_t i)
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{
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if (i >= MAX_CDTEXT_FIELDS)
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return "Invalid CDTEXT field index";
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else
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return cdtext_keywords[i];
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}
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/*! Free memory assocated with cdtext*/
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void
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cdtext_destroy (cdtext_t *p_cdtext)
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{
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cdtext_field_t i;
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if (!p_cdtext) return;
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for (i=0; i < MAX_CDTEXT_FIELDS; i++) {
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if (p_cdtext->field[i]) {
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free(p_cdtext->field[i]);
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p_cdtext->field[i] = NULL;
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}
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}
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}
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/*!
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returns the CDTEXT value associated with key. NULL is returned
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if key is CDTEXT_INVALID or the field is not set.
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*/
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char *
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cdtext_get (cdtext_field_t key, const cdtext_t *p_cdtext)
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{
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if ((key == CDTEXT_INVALID) || !p_cdtext
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|| (!p_cdtext->field[key])) return NULL;
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return strdup(p_cdtext->field[key]);
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}
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const char *
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cdtext_get_const (cdtext_field_t key, const cdtext_t *p_cdtext)
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{
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if (key == CDTEXT_INVALID) return NULL;
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return p_cdtext->field[key];
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}
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/*! Initialize a new cdtext structure.
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When the structure is no longer needed, release the
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resources using cdtext_delete.
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*/
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void
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cdtext_init (cdtext_t *p_cdtext)
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{
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cdtext_field_t i;
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for (i=0; i < MAX_CDTEXT_FIELDS; i++) {
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p_cdtext->field[i] = NULL;
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}
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}
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/*!
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returns 0 if field is a CD-TEXT keyword, returns non-zero otherwise
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*/
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cdtext_field_t
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cdtext_is_keyword (const char *key)
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{
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#if 0
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char *item;
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item = bsearch(key,
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cdtext_keywords, 12,
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sizeof (char *),
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(int (*)(const void *, const void *))
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strcmp);
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return (NULL != item) ? 0 : 1;
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#else
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unsigned int i;
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for (i = 0; i < 13 ; i++)
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if (0 == strcmp (cdtext_keywords[i], key)) {
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return i;
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}
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return CDTEXT_INVALID;
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#endif
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}
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/*! sets cdtext's keyword entry to field.
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*/
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void
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cdtext_set (cdtext_field_t key, const char *p_value, cdtext_t *p_cdtext)
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{
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if (NULL == p_value || key == CDTEXT_INVALID) return;
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if (p_cdtext->field[key]) free (p_cdtext->field[key]);
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p_cdtext->field[key] = strdup (p_value);
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}
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#define SET_CDTEXT_FIELD(FIELD) \
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(*set_cdtext_field_fn)(p_user_data, i_track, i_first_track, FIELD, buffer);
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/*
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parse all CD-TEXT data retrieved.
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*/
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bool
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cdtext_data_init(void *p_user_data, track_t i_first_track,
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unsigned char *wdata, int i_data,
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set_cdtext_field_fn_t set_cdtext_field_fn)
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{
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CDText_data_t *p_data;
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int i = -1;
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int j;
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char buffer[256];
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int idx;
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int i_track;
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bool b_ret = false;
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char block = 0;
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char encoding[16];
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CDText_blocksize_t p_blocksize;
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memset( buffer, 0x00, sizeof(buffer) );
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idx = 0;
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bzero(encoding,16);
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bzero(&p_blocksize, sizeof(CDText_blocksize_t));
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p_data = (CDText_data_t *) (&wdata[4]);
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for( ; i_data > 0;
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i_data -= sizeof(CDText_data_t), p_data++ ) {
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#if TESTED
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if ( p_data->bDBC ) {
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cdio_warn("Double-byte characters not supported");
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return false;
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}
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#endif
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if ( p_data->seq != ++i || p_data->block != block ) break;
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/* only handle character packs */
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if ( ((p_data->type >= 0x80) && (p_data->type <= 0x86)) ||
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(p_data->type == 0x8E)) {
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i_track = p_data->i_track;
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for( j=0; j < CDIO_CDTEXT_MAX_TEXT_DATA; (p_data->bDBC ? j+=2 : j++) ) {
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if( p_data->text[j] == 0x00 && (!p_data->bDBC || p_data->text[j+1] == 0x00)) {
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/* omit empty strings */
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if((buffer[0] != 0x00) && (!p_data->bDBC || buffer[1] != 0x00)) {
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switch( p_data->type) {
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case CDIO_CDTEXT_TITLE:
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SET_CDTEXT_FIELD(CDTEXT_TITLE);
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break;
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case CDIO_CDTEXT_PERFORMER:
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SET_CDTEXT_FIELD(CDTEXT_PERFORMER);
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break;
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case CDIO_CDTEXT_SONGWRITER:
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SET_CDTEXT_FIELD(CDTEXT_SONGWRITER);
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break;
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case CDIO_CDTEXT_COMPOSER:
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SET_CDTEXT_FIELD(CDTEXT_COMPOSER);
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break;
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case CDIO_CDTEXT_ARRANGER:
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SET_CDTEXT_FIELD(CDTEXT_ARRANGER);
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break;
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case CDIO_CDTEXT_MESSAGE:
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SET_CDTEXT_FIELD(CDTEXT_MESSAGE);
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break;
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case CDIO_CDTEXT_DISCID:
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if(i_track == 0) {
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SET_CDTEXT_FIELD(CDTEXT_DISCID);
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}
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break;
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case CDIO_CDTEXT_UPC:
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if(i_track == 0) {
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SET_CDTEXT_FIELD(CDTEXT_UPC_EAN);
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}
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else {
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SET_CDTEXT_FIELD(CDTEXT_ISRC);
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}
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break;
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}
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b_ret = true;
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i_track++;
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idx = 0;
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}
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} else {
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buffer[idx++] = p_data->text[j];
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if(p_data->bDBC)
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buffer[idx++] = p_data->text[j+1];
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}
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buffer[idx] = 0x00;
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if(p_data->bDBC)
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buffer[idx+1] = 0x00;
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}
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} else {
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/* not a character pack */
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if (p_data->type == CDIO_CDTEXT_GENRE) {
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i_track = p_data->i_track;
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/* seems like it is a uint_16 in the first 2 bytes */
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if((p_data->text[0] << 8) + p_data->text[1] != CDIO_CDTEXT_GENRE_UNUSED) {
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sprintf(buffer,"%s",cdtext_genre[(p_data->text[0] << 8) + p_data->text[1]]);
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SET_CDTEXT_FIELD(CDTEXT_GENRE);
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}
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#ifdef _DEBUG_CDTEXT
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printf("GENRE information present: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
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p_data->text[0],p_data->text[1],p_data->text[2],p_data->text[3],
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p_data->text[4],p_data->text[5],p_data->text[6],p_data->text[7],
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p_data->text[8],p_data->text[9],p_data->text[10],p_data->text[11]);
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#endif
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}
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if(p_data->type == CDIO_CDTEXT_TOC) {
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#ifdef _DEBUG_CDTEXT
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printf("TOC information present: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
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p_data->text[0],p_data->text[1],p_data->text[2],p_data->text[3],
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p_data->text[4],p_data->text[5],p_data->text[6],p_data->text[7],
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p_data->text[8],p_data->text[9],p_data->text[10],p_data->text[11]);
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#endif
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}
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if (p_data->type == CDIO_CDTEXT_TOC2) {
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#ifdef _DEBUG_CDTEXT
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printf("TOC2 information present: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
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p_data->text[0],p_data->text[1],p_data->text[2],p_data->text[3],
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p_data->text[4],p_data->text[5],p_data->text[6],p_data->text[7],
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p_data->text[8],p_data->text[9],p_data->text[10],p_data->text[11]);
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#endif
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}
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/* i got this info from cdrtools' cdda2wav; all the tests i ran so far were successful */
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if (p_data->type == CDIO_CDTEXT_BLOCKSIZE) {
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/* i_track is the pack element number in this case */
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switch(p_data->i_track){
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case 0:
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memcpy((char*)&p_blocksize,p_data->text,0x0c);
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break;
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case 1:
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memcpy(((char*)&p_blocksize)+0x0c,p_data->text,0x0c);
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break;
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case 2:
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memcpy(((char*)&p_blocksize)+0x18,p_data->text,0x0c);
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break;
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}
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}
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}
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}
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if (p_blocksize.packcount[15] >= 3) {
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/* BLOCKSIZE packs present */
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switch (p_blocksize.charcode){
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case CDIO_CDTEXT_CHARCODE_ISO_8859_1:
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sprintf(encoding,"ISO-8859-1");
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break;
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case CDIO_CDTEXT_CHARCODE_ASCII:
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sprintf(encoding,"ASCII");
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break;
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case CDIO_CDTEXT_CHARCODE_KANJI:
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sprintf(encoding,"Shift-JIS");
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break;
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}
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}
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return b_ret;
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}
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