89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
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/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 Dave Chapman
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <ctype.h>
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#include <inttypes.h>
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#include "system.h"
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#include "id3.h"
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#include "metadata_common.h"
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#include "atoi.h"
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#include "rbunicode.h"
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/* PSID metadata info is available here:
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http://www.unusedino.de/ec64/technical/formats/sidplay.html */
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bool get_sid_metadata(int fd, struct mp3entry* id3)
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{
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/* Use the trackname part of the id3 structure as a temporary buffer */
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unsigned char* buf = (unsigned char *)id3->path;
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int read_bytes;
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char *p;
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if ((lseek(fd, 0, SEEK_SET) < 0)
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|| ((read_bytes = read(fd, buf, 0x80)) < 0x80))
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{
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return false;
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}
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if ((memcmp(buf, "PSID",4) != 0))
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{
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return false;
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}
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p = id3->id3v2buf;
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/* Copy Title (assumed max 0x1f letters + 1 zero byte) */
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id3->title = p;
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buf[0x16+0x1f] = 0;
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p = iso_decode(&buf[0x16], p, 0, strlen(&buf[0x16])+1);
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/* Copy Artist (assumed max 0x1f letters + 1 zero byte) */
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id3->artist = p;
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buf[0x36+0x1f] = 0;
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p = iso_decode(&buf[0x36], p, 0, strlen(&buf[0x36])+1);
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/* Copy Year (assumed max 4 letters + 1 zero byte) */
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buf[0x56+0x4] = 0;
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id3->year = atoi(&buf[0x56]);
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/* Copy Album (assumed max 0x1f-0x05 letters + 1 zero byte) */
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id3->album = p;
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buf[0x56+0x1f] = 0;
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p = iso_decode(&buf[0x5b], p, 0, strlen(&buf[0x5b])+1);
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id3->bitrate = 706;
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id3->frequency = 44100;
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/* New idea as posted by Marco Alanen (ravon):
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* Set the songlength in seconds to the number of subsongs
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* so every second represents a subsong.
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* Users can then skip the current subsong by seeking
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*
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* Note: the number of songs is a 16bit value at 0xE, so this code only
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* uses the lower 8 bits of the counter.
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*/
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id3->length = (buf[0xf]-1)*1000;
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id3->vbr = false;
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id3->filesize = filesize(fd);
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return true;
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}
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