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rockbox/lib/rbcodec/metadata/metadata.c
Sean Bartell fe3d58004c rbcodec refactoring: get_audio_base_data_type 
This function has been changed to rbcodec_format_is_atomic, which
doesn't require an enum from the kernel.

Change-Id: I1d537605087fe130a9b545509d7b8a340806dbf2
Reviewed-on: http://gerrit.rockbox.org/141
Reviewed-by: Nils Wallménius <nils@rockbox.org>
Tested-by: Nils Wallménius <nils@rockbox.org>
2012-04-28 09:07:40 +02:00

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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2005 Dave Chapman
*
* 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 software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "string-extra.h"
#include "debug.h"
#include "logf.h"
#include "settings.h"
#include "cuesheet.h"
#include "metadata.h"
#include "metadata_parsers.h"
#if CONFIG_CODEC == SWCODEC
/* For trailing tag stripping and base audio data types */
#include "buffering.h"
#include "metadata/metadata_common.h"
static bool get_shn_metadata(int fd, struct mp3entry *id3)
{
/* TODO: read the id3v2 header if it exists */
id3->vbr = true;
id3->filesize = filesize(fd);
return skip_id3v2(fd, id3);
}
static bool get_other_asap_metadata(int fd, struct mp3entry *id3)
{
id3->bitrate = 706;
id3->frequency = 44100;
id3->vbr = false;
id3->filesize = filesize(fd);
id3->genre_string = id3_get_num_genre(36);
return true;
}
#endif /* CONFIG_CODEC == SWCODEC */
bool write_metadata_log = false;
const struct afmt_entry audio_formats[AFMT_NUM_CODECS] =
{
/* Unknown file format */
[0 ... AFMT_NUM_CODECS-1] =
AFMT_ENTRY("???", NULL, NULL, NULL, "\0" ),
/* MPEG Audio layer 2 */
[AFMT_MPA_L2] =
AFMT_ENTRY("MP2", "mpa", NULL, get_mp3_metadata, "mpa\0mp2\0"),
#if CONFIG_CODEC != SWCODEC
/* MPEG Audio layer 3 on HWCODEC: .talk clips, no encoder */
[AFMT_MPA_L3] =
AFMT_ENTRY("MP3", "mpa", NULL, get_mp3_metadata, "mp3\0talk\0"),
#else /* CONFIG_CODEC == SWCODEC */
/* MPEG Audio layer 3 on SWCODEC */
[AFMT_MPA_L3] =
AFMT_ENTRY("MP3", "mpa", "mp3_enc", get_mp3_metadata, "mp3\0"),
/* MPEG Audio layer 1 */
[AFMT_MPA_L1] =
AFMT_ENTRY("MP1", "mpa", NULL, get_mp3_metadata, "mp1\0"),
/* Audio Interchange File Format */
[AFMT_AIFF] =
AFMT_ENTRY("AIFF", "aiff", "aiff_enc", get_aiff_metadata, "aiff\0aif\0"),
/* Uncompressed PCM in a WAV file OR ATRAC3 stream in WAV file (.at3) */
[AFMT_PCM_WAV] =
AFMT_ENTRY("WAV", "wav", "wav_enc", get_wave_metadata, "wav\0at3\0"),
/* Ogg Vorbis */
[AFMT_OGG_VORBIS] =
AFMT_ENTRY("Ogg", "vorbis", NULL, get_ogg_metadata, "ogg\0oga\0"),
/* FLAC */
[AFMT_FLAC] =
AFMT_ENTRY("FLAC", "flac", NULL, get_flac_metadata, "flac\0"),
/* Musepack SV7 */
[AFMT_MPC_SV7] =
AFMT_ENTRY("MPCv7", "mpc", NULL, get_musepack_metadata,"mpc\0"),
/* A/52 (aka AC3) audio */
[AFMT_A52] =
AFMT_ENTRY("AC3", "a52", NULL, get_a52_metadata, "a52\0ac3\0"),
/* WavPack */
[AFMT_WAVPACK] =
AFMT_ENTRY("WV","wavpack","wavpack_enc",get_wavpack_metadata,"wv\0"),
/* Apple Lossless Audio Codec */
[AFMT_MP4_ALAC] =
AFMT_ENTRY("ALAC", "alac", NULL, get_mp4_metadata, "m4a\0m4b\0"),
/* Advanced Audio Coding in M4A container */
[AFMT_MP4_AAC] =
AFMT_ENTRY("AAC", "aac", NULL, get_mp4_metadata, "mp4\0"),
/* Shorten */
[AFMT_SHN] =
AFMT_ENTRY("SHN","shorten", NULL, get_shn_metadata, "shn\0"),
/* SID File Format */
[AFMT_SID] =
AFMT_ENTRY("SID", "sid", NULL, get_sid_metadata, "sid\0"),
/* ADX File Format */
[AFMT_ADX] =
AFMT_ENTRY("ADX", "adx", NULL, get_adx_metadata, "adx\0"),
/* NESM (NES Sound Format) */
[AFMT_NSF] =
AFMT_ENTRY("NSF", "nsf", NULL, get_nsf_metadata, "nsf\0nsfe\0"),
/* Speex File Format */
[AFMT_SPEEX] =
AFMT_ENTRY("Speex", "speex",NULL, get_ogg_metadata, "spx\0"),
/* SPC700 Save State */
[AFMT_SPC] =
AFMT_ENTRY("SPC", "spc", NULL, get_spc_metadata, "spc\0"),
/* APE (Monkey's Audio) */
[AFMT_APE] =
AFMT_ENTRY("APE", "ape", NULL, get_monkeys_metadata,"ape\0mac\0"),
/* WMA (WMAV1/V2 in ASF) */
[AFMT_WMA] =
AFMT_ENTRY("WMA", "wma", NULL, get_asf_metadata,"wma\0wmv\0asf\0"),
/* WMA Professional in ASF */
[AFMT_WMAPRO] =
AFMT_ENTRY("WMAPro","wmapro",NULL, NULL, "wma\0wmv\0asf\0"),
/* Amiga MOD File */
[AFMT_MOD] =
AFMT_ENTRY("MOD", "mod", NULL, get_mod_metadata, "mod\0"),
/* Atari SAP File */
[AFMT_SAP] =
AFMT_ENTRY("SAP", "asap", NULL, get_asap_metadata, "sap\0"),
/* Cook in RM/RA */
[AFMT_RM_COOK] =
AFMT_ENTRY("Cook", "cook", NULL, get_rm_metadata,"rm\0ra\0rmvb\0"),
/* AAC in RM/RA */
[AFMT_RM_AAC] =
AFMT_ENTRY("RAAC", "raac", NULL, NULL, "rm\0ra\0rmvb\0"),
/* AC3 in RM/RA */
[AFMT_RM_AC3] =
AFMT_ENTRY("AC3", "a52_rm", NULL, NULL, "rm\0ra\0rmvb\0"),
/* ATRAC3 in RM/RA */
[AFMT_RM_ATRAC3] =
AFMT_ENTRY("ATRAC3","atrac3_rm",NULL, NULL, "rm\0ra\0rmvb\0"),
/* Atari CMC File */
[AFMT_CMC] =
AFMT_ENTRY("CMC", "asap", NULL, get_other_asap_metadata,"cmc\0"),
/* Atari CM3 File */
[AFMT_CM3] =
AFMT_ENTRY("CM3", "asap", NULL, get_other_asap_metadata,"cm3\0"),
/* Atari CMR File */
[AFMT_CMR] =
AFMT_ENTRY("CMR", "asap", NULL, get_other_asap_metadata,"cmr\0"),
/* Atari CMS File */
[AFMT_CMS] =
AFMT_ENTRY("CMS", "asap", NULL, get_other_asap_metadata,"cms\0"),
/* Atari DMC File */
[AFMT_DMC] =
AFMT_ENTRY("DMC", "asap", NULL, get_other_asap_metadata,"dmc\0"),
/* Atari DLT File */
[AFMT_DLT] =
AFMT_ENTRY("DLT", "asap", NULL, get_other_asap_metadata,"dlt\0"),
/* Atari MPT File */
[AFMT_MPT] =
AFMT_ENTRY("MPT", "asap", NULL, get_other_asap_metadata,"mpt\0"),
/* Atari MPD File */
[AFMT_MPD] =
AFMT_ENTRY("MPD", "asap", NULL, get_other_asap_metadata,"mpd\0"),
/* Atari RMT File */
[AFMT_RMT] =
AFMT_ENTRY("RMT", "asap", NULL, get_other_asap_metadata,"rmt\0"),
/* Atari TMC File */
[AFMT_TMC] =
AFMT_ENTRY("TMC", "asap", NULL, get_other_asap_metadata,"tmc\0"),
/* Atari TM8 File */
[AFMT_TM8] =
AFMT_ENTRY("TM8", "asap", NULL, get_other_asap_metadata,"tm8\0"),
/* Atari TM2 File */
[AFMT_TM2] =
AFMT_ENTRY("TM2", "asap", NULL, get_other_asap_metadata,"tm2\0"),
/* Atrac3 in Sony OMA Container */
[AFMT_OMA_ATRAC3] =
AFMT_ENTRY("ATRAC3","atrac3_oma",NULL, get_oma_metadata, "oma\0aa3\0"),
/* SMAF (Synthetic music Mobile Application Format) */
[AFMT_SMAF] =
AFMT_ENTRY("SMAF", "smaf", NULL, get_smaf_metadata, "mmf\0"),
/* Sun Audio file */
[AFMT_AU] =
AFMT_ENTRY("AU", "au", NULL, get_au_metadata, "au\0snd\0"),
/* VOX (Dialogic telephony file formats) */
[AFMT_VOX] =
AFMT_ENTRY("VOX", "vox", NULL, get_vox_metadata, "vox\0"),
/* Wave64 */
[AFMT_WAVE64] =
AFMT_ENTRY("WAVE64","wav64",NULL, get_wave64_metadata,"w64\0"),
/* True Audio */
[AFMT_TTA] =
AFMT_ENTRY("TTA", "tta", NULL, get_tta_metadata, "tta\0"),
/* WMA Voice in ASF */
[AFMT_WMAVOICE] =
AFMT_ENTRY("WMAVoice","wmavoice",NULL, NULL, "wma\0wmv\0"),
/* Musepack SV8 */
[AFMT_MPC_SV8] =
AFMT_ENTRY("MPCv8", "mpc", NULL, get_musepack_metadata,"mpc\0"),
/* Advanced Audio Coding High Efficiency in M4A container */
[AFMT_MP4_AAC_HE] =
AFMT_ENTRY("AAC-HE","aac", NULL, get_mp4_metadata, "mp4\0"),
/* AY (ZX Spectrum, Amstrad CPC Sound Format) */
[AFMT_AY] =
AFMT_ENTRY("AY", "ay", NULL, get_ay_metadata, "ay\0"),
/* GBS (Game Boy Sound Format) */
[AFMT_GBS] =
AFMT_ENTRY("GBS", "gbs", NULL, get_gbs_metadata, "gbs\0"),
/* HES (Hudson Entertainment System Sound Format) */
[AFMT_HES] =
AFMT_ENTRY("HES", "hes", NULL, get_hes_metadata, "hes\0"),
/* SGC (Sega Master System, Game Gear, Coleco Vision Sound Format) */
[AFMT_SGC] =
AFMT_ENTRY("SGC", "sgc", NULL, get_sgc_metadata, "sgc\0"),
/* VGM (Video Game Music Format) */
[AFMT_VGM] =
AFMT_ENTRY("VGM", "vgm", NULL, get_vgm_metadata, "vgm\0vgz\0"),
/* KSS (MSX computer KSS Music File) */
[AFMT_KSS] =
AFMT_ENTRY("KSS", "kss", NULL, get_kss_metadata, "kss\0"),
#endif
};
#if CONFIG_CODEC == SWCODEC && defined (HAVE_RECORDING)
/* get REC_FORMAT_* corresponding AFMT_* */
const int rec_format_afmt[REC_NUM_FORMATS] =
{
/* give AFMT_UNKNOWN by default */
[0 ... REC_NUM_FORMATS-1] = AFMT_UNKNOWN,
/* add new entries below this line */
[REC_FORMAT_AIFF] = AFMT_AIFF,
[REC_FORMAT_MPA_L3] = AFMT_MPA_L3,
[REC_FORMAT_WAVPACK] = AFMT_WAVPACK,
[REC_FORMAT_PCM_WAV] = AFMT_PCM_WAV,
};
#if 0 /* Currently unused, left for reference and future use */
/* get AFMT_* corresponding REC_FORMAT_* */
const int afmt_rec_format[AFMT_NUM_CODECS] =
{
/* give -1 by default */
[0 ... AFMT_NUM_CODECS-1] = -1,
/* add new entries below this line */
[AFMT_AIFF] = REC_FORMAT_AIFF,
[AFMT_MPA_L3] = REC_FORMAT_MPA_L3,
[AFMT_WAVPACK] = REC_FORMAT_WAVPACK,
[AFMT_PCM_WAV] = REC_FORMAT_PCM_WAV,
};
#endif
#endif /* CONFIG_CODEC == SWCODEC && defined (HAVE_RECORDING) */
#if CONFIG_CODEC == SWCODEC
/* Get the canonical AFMT type */
int get_audio_base_codec_type(int type)
{
int base_type = type;
switch (type) {
case AFMT_MPA_L1:
case AFMT_MPA_L2:
case AFMT_MPA_L3:
base_type = AFMT_MPA_L3;
break;
case AFMT_MPC_SV7:
case AFMT_MPC_SV8:
base_type = AFMT_MPC_SV7;
break;
case AFMT_MP4_AAC:
case AFMT_MP4_AAC_HE:
base_type = AFMT_MP4_AAC;
break;
case AFMT_SAP:
case AFMT_CMC:
case AFMT_CM3:
case AFMT_CMR:
case AFMT_CMS:
case AFMT_DMC:
case AFMT_DLT:
case AFMT_MPT:
case AFMT_MPD:
case AFMT_RMT:
case AFMT_TMC:
case AFMT_TM8:
case AFMT_TM2:
base_type = AFMT_SAP;
break;
default:
break;
}
return base_type;
}
/* Get the basic audio type */
bool rbcodec_format_is_atomic(int afmt)
{
if ((unsigned)afmt >= AFMT_NUM_CODECS)
return false;
switch (get_audio_base_codec_type(afmt))
{
case AFMT_NSF:
case AFMT_SPC:
case AFMT_SID:
case AFMT_MOD:
case AFMT_SAP:
case AFMT_AY:
case AFMT_GBS:
case AFMT_HES:
case AFMT_SGC:
case AFMT_VGM:
case AFMT_KSS:
/* Type must be allocated and loaded in its entirety onto
the buffer */
return true;
default:
/* Assume type may be loaded and discarded incrementally */
return false;
}
}
/* Is the format allowed to buffer starting at some offset other than 0
or first frame only for resume purposes? */
bool format_buffers_with_offset(int afmt)
{
switch (afmt)
{
case AFMT_MPA_L1:
case AFMT_MPA_L2:
case AFMT_MPA_L3:
case AFMT_WAVPACK:
/* Format may be loaded at the first needed frame */
return true;
default:
/* Format must be loaded from the beginning of the file
(does not imply 'atomic', while 'atomic' implies 'no offset') */
return false;
}
}
#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;
}
/* Note, that this returns false for successful, true for error! */
bool mp3info(struct mp3entry *entry, const char *filename)
{
int fd;
bool result;
fd = open(filename, O_RDONLY);
if (fd < 0)
return true;
result = !get_metadata(entry, fd, filename);
close(fd);
return result;
}
/* 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)
{
const struct afmt_entry *entry;
int logfd = 0;
DEBUGF("Read metadata for %s\n", trackname);
if (write_metadata_log)
{
logfd = open("/metadata.log", O_WRONLY | O_APPEND | O_CREAT, 0666);
if (logfd >= 0)
{
write(logfd, trackname, strlen(trackname));
write(logfd, "\n", 1);
close(logfd);
}
}
/* Clear the mp3entry to avoid having bogus pointers appear */
wipe_mp3entry(id3);
/* Take our best guess at the codec type based on file extension */
id3->codectype = probe_file_format(trackname);
/* default values for embedded cuesheets */
id3->has_embedded_cuesheet = false;
id3->embedded_cuesheet.pos = 0;
entry = &audio_formats[id3->codectype];
/* Load codec specific track tag information and confirm the codec type. */
if (!entry->parse_func)
{
DEBUGF("nothing to parse for %s (format %s)", trackname, entry->label);
return false;
}
if (!entry->parse_func(fd, id3))
{
DEBUGF("parsing %s failed (format: %s)", trackname, entry->label);
return false;
}
lseek(fd, 0, SEEK_SET);
strlcpy(id3->path, trackname, sizeof(id3->path));
/* We have successfully read the metadata from the file */
return true;
}
#ifndef __PCTOOL__
#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 */
#endif /* ! __PCTOOL__ */
#define MOVE_ENTRY(x) if (x) x += offset;
void adjust_mp3entry(struct mp3entry *entry, void *dest, const void *orig)
{
long offset;
if (orig > dest)
offset = -((size_t)orig - (size_t)dest);
else
offset = ((size_t)dest - (size_t)orig);
MOVE_ENTRY(entry->title)
MOVE_ENTRY(entry->artist)
MOVE_ENTRY(entry->album)
if (entry->genre_string > (char*)orig &&
entry->genre_string < (char*)orig + sizeof(struct mp3entry))
/* Don't adjust that if it points to an entry of the "genres" array */
entry->genre_string += offset;
MOVE_ENTRY(entry->track_string)
MOVE_ENTRY(entry->disc_string)
MOVE_ENTRY(entry->year_string)
MOVE_ENTRY(entry->composer)
MOVE_ENTRY(entry->comment)
MOVE_ENTRY(entry->albumartist)
MOVE_ENTRY(entry->grouping)
MOVE_ENTRY(entry->mb_track_id)
}
void copy_mp3entry(struct mp3entry *dest, const struct mp3entry *orig)
{
memcpy(dest, orig, sizeof(struct mp3entry));
adjust_mp3entry(dest, dest, orig);
}
/* A shortcut to simplify the common task of clearing the struct */
void wipe_mp3entry(struct mp3entry *id3)
{
memset(id3, 0, sizeof (struct mp3entry));
}
#if CONFIG_CODEC == SWCODEC
/* Glean what is possible from the filename alone - does not parse metadata */
void fill_metadata_from_path(struct mp3entry *id3, const char *trackname)
{
char *p;
/* Clear the mp3entry to avoid having bogus pointers appear */
wipe_mp3entry(id3);
/* Find the filename portion of the path */
p = strrchr(trackname, '/');
strlcpy(id3->id3v2buf, p ? ++p : id3->path, ID3V2_BUF_SIZE);
/* Get the format from the extension and trim it off */
p = strrchr(id3->id3v2buf, '.');
if (p)
{
/* Might be wrong for container formats - should we bother? */
id3->codectype = probe_file_format(p);
if (id3->codectype != AFMT_UNKNOWN)
*p = '\0';
}
/* Set the filename as the title */
id3->title = id3->id3v2buf;
/* Copy the path info */
strlcpy(id3->path, trackname, sizeof (id3->path));
}
#endif /* CONFIG_CODEC == SWCODEC */
#ifndef __PCTOOL__
#ifdef HAVE_TAGCACHE
#if CONFIG_CODEC == SWCODEC
enum { AUTORESUMABLE_UNKNOWN = 0, AUTORESUMABLE_TRUE, AUTORESUMABLE_FALSE };
bool autoresumable(struct mp3entry *id3)
{
char *endp, *path;
size_t len;
bool is_resumable;
if (id3->autoresumable) /* result cached? */
return id3->autoresumable == AUTORESUMABLE_TRUE;
is_resumable = false;
if (id3->path)
{
for (path = global_settings.autoresume_paths;
*path; /* search terms left? */
path++)
{
if (*path == ':') /* Skip empty search patterns */
continue;
/* FIXME: As soon as strcspn or strchrnul are made available in
the core, the following can be made more efficient. */
endp = strchr(path, ':');
if (endp)
len = endp - path;
else
len = strlen(path);
/* Note: At this point, len is always > 0 */
if (strncasecmp(id3->path, path, len) == 0)
{
/* Full directory-name matches only. Trailing '/' in
search path OK. */
if (id3->path[len] == '/' || id3->path[len - 1] == '/')
{
is_resumable = true;
break;
}
}
path += len - 1;
}
}
/* cache result */
id3->autoresumable =
is_resumable ? AUTORESUMABLE_TRUE : AUTORESUMABLE_FALSE;
logf("autoresumable: %s is%s resumable",
id3->path, is_resumable ? "" : " not");
return is_resumable;
}
#endif /* SWCODEC */
#endif /* HAVE_TAGCACHE */
#endif /* __PCTOOL__ */
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