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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Dave Chapman
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#include <inttypes.h>
#include "system.h"
#include "playback.h"
#include "debug.h"
#include "logf.h"
#include "cuesheet.h"
#if CONFIG_CODEC == SWCODEC
/* For trailing tag stripping */
#include "buffering.h"
#include "metadata/metadata_common.h"
#include "metadata/metadata_parsers.h"
#endif /* CONFIG_CODEC == SWCODEC */
/* Simple file type probing by looking at the filename extension. */
unsigned int probe_file_format(const char *filename)
{
char *suffix;
unsigned int i;
suffix = strrchr(filename, '.');
if (suffix == NULL)
{
return AFMT_UNKNOWN;
}
/* skip '.' */
suffix++;
for (i = 1; i < AFMT_NUM_CODECS; i++)
{
/* search extension list for type */
const char *ext = audio_formats[i].ext_list;
do
{
if (strcasecmp(suffix, ext) == 0)
{
return i;
}
ext += strlen(ext) + 1;
}
while (*ext != '\0');
}
return AFMT_UNKNOWN;
}
/* Get metadata for track - return false if parsing showed problems with the
* file that would prevent playback.
*/
bool get_metadata(struct mp3entry* id3, int fd, const char* trackname)
{
#if CONFIG_CODEC == SWCODEC
unsigned char* buf;
#endif
/* Clear the mp3entry to avoid having bogus pointers appear */
memset(id3, 0, sizeof(struct mp3entry));
/* Take our best guess at the codec type based on file extension */
id3->codectype = probe_file_format(trackname);
/* Load codec specific track tag information and confirm the codec type. */
switch (id3->codectype)
{
case AFMT_MPA_L1:
case AFMT_MPA_L2:
case AFMT_MPA_L3:
if (!get_mp3_metadata(fd, id3, trackname))
{
return false;
}
break;
#if CONFIG_CODEC == SWCODEC
case AFMT_FLAC:
if (!get_flac_metadata(fd, id3))
{
return false;
}
break;
case AFMT_WMA:
if (!get_asf_metadata(fd, id3))
{
return false;
}
break;
case AFMT_APE:
if (!get_monkeys_metadata(fd, id3))
{
return false;
}
read_ape_tags(fd, id3);
break;
case AFMT_MPC:
if (!get_musepack_metadata(fd, id3))
return false;
read_ape_tags(fd, id3);
break;
case AFMT_OGG_VORBIS:
if (!get_ogg_metadata(fd, id3))/*detects and handles Ogg/Speex files*/
{
return false;
}
break;
case AFMT_SPEEX:
if (!get_ogg_metadata(fd, id3))
{
return false;
}
break;
case AFMT_PCM_WAV:
if (!get_wave_metadata(fd, id3))
{
return false;
}
break;
case AFMT_WAVPACK:
if (!get_wavpack_metadata(fd, id3))
{
return false;
}
read_ape_tags(fd, id3); /* use any apetag info we find */
break;
case AFMT_A52:
if (!get_a52_metadata(fd, id3))
{
return false;
}
break;
case AFMT_ALAC:
case AFMT_AAC:
if (!get_mp4_metadata(fd, id3))
{
return false;
}
break;
case AFMT_SHN:
id3->vbr = true;
id3->filesize = filesize(fd);
if (!skip_id3v2(fd, id3))
{
return false;
}
/* TODO: read the id3v2 header if it exists */
break;
case AFMT_SID:
if (!get_sid_metadata(fd, id3))
{
return false;
}
break;
case AFMT_SPC:
if (!get_spc_metadata(fd, id3))
{
DEBUGF("get_spc_metadata error\n");
return false;
}
id3->filesize = filesize(fd);
id3->genre_string = id3_get_num_genre(36);
break;
case AFMT_ADX:
if (!get_adx_metadata(fd, id3))
{
DEBUGF("get_adx_metadata error\n");
return false;
}
break;
case AFMT_NSF:
buf = (unsigned char *)id3->path;
if ((lseek(fd, 0, SEEK_SET) < 0) || ((read(fd, buf, 8)) < 8))
{
DEBUGF("lseek or read failed\n");
return false;
}
id3->vbr = false;
id3->filesize = filesize(fd);
if (memcmp(buf,"NESM",4) && memcmp(buf,"NSFE",4)) return false;
break;
case AFMT_AIFF:
if (!get_aiff_metadata(fd, id3))
{
return false;
}
break;
#endif /* CONFIG_CODEC == SWCODEC */
default:
/* If we don't know how to read the metadata, assume we can't play
the file */
return false;
break;
}
/* We have successfully read the metadata from the file */
#ifndef __PCTOOL__
if (cuesheet_is_enabled() && look_for_cuesheet_file(trackname, NULL))
{
id3->cuesheet_type = 1;
}
#endif
lseek(fd, 0, SEEK_SET);
strncpy(id3->path, trackname, sizeof(id3->path));
return true;
}
#if CONFIG_CODEC == SWCODEC
void strip_tags(int handle_id)
{
static const unsigned char tag[] = "TAG";
static const unsigned char apetag[] = "APETAGEX";
size_t len, version;
void *tail;
if (bufgettail(handle_id, 128, &tail) != 128)
return;
if (memcmp(tail, tag, 3) == 0)
{
/* Skip id3v1 tag */
logf("Cutting off ID3v1 tag");
bufcuttail(handle_id, 128);
}
/* Get a new tail, as the old one may have been cut */
if (bufgettail(handle_id, 32, &tail) != 32)
return;
/* Check for APE tag (look for the APE tag footer) */
if (memcmp(tail, apetag, 8) != 0)
return;
/* Read the version and length from the footer */
version = get_long_le(&((unsigned char *)tail)[8]);
len = get_long_le(&((unsigned char *)tail)[12]);
if (version == 2000)
len += 32; /* APEv2 has a 32 byte header */
/* Skip APE tag */
logf("Cutting off APE tag (%ldB)", len);
bufcuttail(handle_id, len);
}
#endif /* CONFIG_CODEC == SWCODEC */
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