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Tag*: move libtag.a sources to src/tag/

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This commit is contained in:
Max Kellermann
2013-09-04 23:46:20 +02:00
parent ee9e238179
commit 5101ef4b02
23 changed files with 22 additions and 26 deletions
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115
src/tag/ApeLoader.cxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "ApeLoader.hxx"
#include <glib.h>
#include <stdint.h>
#include <assert.h>
#include <stdio.h>
#include <string.h>
struct ape_footer {
unsigned char id[8];
uint32_t version;
uint32_t length;
uint32_t count;
unsigned char flags[4];
unsigned char reserved[8];
};
static bool
ape_scan_internal(FILE *fp, ApeTagCallback callback)
{
/* determine if file has an apeV2 tag */
struct ape_footer footer;
if (fseek(fp, -(long)sizeof(footer), SEEK_END) ||
fread(&footer, 1, sizeof(footer), fp) != sizeof(footer) ||
memcmp(footer.id, "APETAGEX", sizeof(footer.id)) != 0 ||
GUINT32_FROM_LE(footer.version) != 2000)
return false;
/* find beginning of ape tag */
size_t remaining = GUINT32_FROM_LE(footer.length);
if (remaining <= sizeof(footer) + 10 ||
/* refuse to load more than one megabyte of tag data */
remaining > 1024 * 1024 ||
fseek(fp, -(long)remaining, SEEK_END))
return false;
/* read tag into buffer */
remaining -= sizeof(footer);
assert(remaining > 10);
char *buffer = (char *)g_malloc(remaining);
if (fread(buffer, 1, remaining, fp) != remaining) {
g_free(buffer);
return false;
}
/* read tags */
unsigned n = GUINT32_FROM_LE(footer.count);
const char *p = buffer;
while (n-- && remaining > 10) {
size_t size = GUINT32_FROM_LE(*(const uint32_t *)p);
p += 4;
remaining -= 4;
unsigned long flags = GUINT32_FROM_LE(*(const uint32_t *)p);
p += 4;
remaining -= 4;
/* get the key */
const char *key = p;
while (remaining > size && *p != '\0') {
p++;
remaining--;
}
p++;
remaining--;
/* get the value */
if (remaining < size)
break;
if (!callback(flags, key, p, size))
break;
p += size;
remaining -= size;
}
g_free(buffer);
return true;
}
bool
tag_ape_scan(const char *path_fs, ApeTagCallback callback)
{
FILE *fp;
fp = fopen(path_fs, "rb");
if (fp == nullptr)
return false;
bool success = ape_scan_internal(fp, callback);
fclose(fp);
return success;
}

43
src/tag/ApeLoader.hxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_APE_LOADER_HXX
#define MPD_APE_LOADER_HXX
#include "check.h"
#include <functional>
#include <stddef.h>
typedef std::function<bool(unsigned long flags, const char *key,
const char *value,
size_t value_length)> ApeTagCallback;
/**
* Scans the APE tag values from a file.
*
* @param path_fs the path of the file in filesystem encoding
* @return false if the file could not be opened or if no APE tag is
* present
*/
bool
tag_ape_scan(const char *path_fs, ApeTagCallback callback);
#endif

78
src/tag/ApeReplayGain.cxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "ApeReplayGain.hxx"
#include "ApeLoader.hxx"
#include "replay_gain_info.h"
#include <glib.h>
#include <string.h>
#include <stdlib.h>
static bool
replay_gain_ape_callback(unsigned long flags, const char *key,
const char *_value, size_t value_length,
struct replay_gain_info *info)
{
/* we only care about utf-8 text tags */
if ((flags & (0x3 << 1)) != 0)
return false;
char value[16];
if (value_length >= sizeof(value))
return false;
memcpy(value, _value, value_length);
value[value_length] = 0;
if (g_ascii_strcasecmp(key, "replaygain_track_gain") == 0) {
info->tuples[REPLAY_GAIN_TRACK].gain = atof(value);
return true;
} else if (g_ascii_strcasecmp(key, "replaygain_album_gain") == 0) {
info->tuples[REPLAY_GAIN_ALBUM].gain = atof(value);
return true;
} else if (g_ascii_strcasecmp(key, "replaygain_track_peak") == 0) {
info->tuples[REPLAY_GAIN_TRACK].peak = atof(value);
return true;
} else if (g_ascii_strcasecmp(key, "replaygain_album_peak") == 0) {
info->tuples[REPLAY_GAIN_ALBUM].peak = atof(value);
return true;
} else
return false;
}
bool
replay_gain_ape_read(const char *path_fs, struct replay_gain_info *info)
{
bool found = false;
auto callback = [info, &found]
(unsigned long flags, const char *key,
const char *value,
size_t value_length) {
found |= replay_gain_ape_callback(flags, key,
value, value_length,
info);
return true;
};
return tag_ape_scan(path_fs, callback) && found;
}

30
src/tag/ApeReplayGain.hxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_APE_REPLAY_GAIN_HXX
#define MPD_APE_REPLAY_GAIN_HXX
#include "check.h"
struct replay_gain_info;
bool
replay_gain_ape_read(const char *path_fs, struct replay_gain_info *info);
#endif

104
src/tag/ApeTag.cxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "ApeTag.hxx"
#include "ApeLoader.hxx"
#include "Tag.hxx"
#include "TagTable.hxx"
#include "TagHandler.hxx"
const struct tag_table ape_tags[] = {
{ "album artist", TAG_ALBUM_ARTIST },
{ "year", TAG_DATE },
{ nullptr, TAG_NUM_OF_ITEM_TYPES }
};
static enum tag_type
tag_ape_name_parse(const char *name)
{
enum tag_type type = tag_table_lookup_i(ape_tags, name);
if (type == TAG_NUM_OF_ITEM_TYPES)
type = tag_name_parse_i(name);
return type;
}
/**
* @return true if the item was recognized
*/
static bool
tag_ape_import_item(unsigned long flags,
const char *key, const char *value, size_t value_length,
const struct tag_handler *handler, void *handler_ctx)
{
/* we only care about utf-8 text tags */
if ((flags & (0x3 << 1)) != 0)
return false;
tag_handler_invoke_pair(handler, handler_ctx, key, value);
enum tag_type type = tag_ape_name_parse(key);
if (type == TAG_NUM_OF_ITEM_TYPES)
return false;
bool recognized = false;
const char *end = value + value_length;
while (true) {
/* multiple values are separated by null bytes */
const char *n = (const char *)memchr(value, 0, end - value);
if (n != nullptr) {
if (n > value) {
tag_handler_invoke_tag(handler, handler_ctx,
type, value);
recognized = true;
}
value = n + 1;
} else {
char *p = g_strndup(value, end - value);
tag_handler_invoke_tag(handler, handler_ctx,
type, p);
g_free(p);
recognized = true;
break;
}
}
return recognized;
}
bool
tag_ape_scan2(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
bool recognized = false;
auto callback = [handler, handler_ctx, &recognized]
(unsigned long flags, const char *key,
const char *value,
size_t value_length) {
recognized |= tag_ape_import_item(flags, key, value,
value_length,
handler, handler_ctx);
return true;
};
return tag_ape_scan(path_fs, callback) && recognized;
}

38
src/tag/ApeTag.hxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_APE_TAG_HXX
#define MPD_APE_TAG_HXX
#include "TagTable.hxx"
struct tag_handler;
extern const struct tag_table ape_tags[];
/**
* Scan the APE tags of a file.
*
* @param path_fs the path of the file in filesystem encoding
*/
bool
tag_ape_scan2(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx);
#endif

583
src/tag/TagId3.cxx Normal file
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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "TagId3.hxx"
#include "TagHandler.hxx"
#include "TagTable.hxx"
#include "Tag.hxx"
#include "util/Error.hxx"
extern "C" {
#include "riff.h"
#include "aiff.h"
}
#include "conf.h"
#include <glib.h>
#include <id3tag.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "id3"
# ifndef ID3_FRAME_COMPOSER
# define ID3_FRAME_COMPOSER "TCOM"
# endif
# ifndef ID3_FRAME_DISC
# define ID3_FRAME_DISC "TPOS"
# endif
#ifndef ID3_FRAME_ARTIST_SORT
#define ID3_FRAME_ARTIST_SORT "TSOP"
#endif
#ifndef ID3_FRAME_ALBUM_ARTIST_SORT
#define ID3_FRAME_ALBUM_ARTIST_SORT "TSO2" /* this one is unofficial, introduced by Itunes */
#endif
#ifndef ID3_FRAME_ALBUM_ARTIST
#define ID3_FRAME_ALBUM_ARTIST "TPE2"
#endif
static inline bool
tag_is_id3v1(struct id3_tag *tag)
{
return (id3_tag_options(tag, 0, 0) & ID3_TAG_OPTION_ID3V1) != 0;
}
static id3_utf8_t *
tag_id3_getstring(const struct id3_frame *frame, unsigned i)
{
union id3_field *field;
const id3_ucs4_t *ucs4;
field = id3_frame_field(frame, i);
if (field == nullptr)
return nullptr;
ucs4 = id3_field_getstring(field);
if (ucs4 == nullptr)
return nullptr;
return id3_ucs4_utf8duplicate(ucs4);
}
/* This will try to convert a string to utf-8,
*/
static id3_utf8_t *
import_id3_string(bool is_id3v1, const id3_ucs4_t *ucs4)
{
id3_utf8_t *utf8, *utf8_stripped;
id3_latin1_t *isostr;
const char *encoding;
/* use encoding field here? */
if (is_id3v1 &&
(encoding = config_get_string(CONF_ID3V1_ENCODING, nullptr)) != nullptr) {
isostr = id3_ucs4_latin1duplicate(ucs4);
if (G_UNLIKELY(!isostr)) {
return nullptr;
}
utf8 = (id3_utf8_t *)
g_convert_with_fallback((const char*)isostr, -1,
"utf-8", encoding,
nullptr, nullptr,
nullptr, nullptr);
if (utf8 == nullptr) {
g_debug("Unable to convert %s string to UTF-8: '%s'",
encoding, isostr);
g_free(isostr);
return nullptr;
}
g_free(isostr);
} else {
utf8 = id3_ucs4_utf8duplicate(ucs4);
if (G_UNLIKELY(!utf8)) {
return nullptr;
}
}
utf8_stripped = (id3_utf8_t *)g_strdup(g_strstrip((gchar *)utf8));
g_free(utf8);
return utf8_stripped;
}
/**
* Import a "Text information frame" (ID3v2.4.0 section 4.2). It
* contains 2 fields:
*
* - encoding
* - string list
*/
static void
tag_id3_import_text_frame(struct id3_tag *tag, const struct id3_frame *frame,
enum tag_type type,
const struct tag_handler *handler, void *handler_ctx)
{
id3_ucs4_t const *ucs4;
id3_utf8_t *utf8;
union id3_field const *field;
unsigned int nstrings, i;
if (frame->nfields != 2)
return;
/* check the encoding field */
field = id3_frame_field(frame, 0);
if (field == nullptr || field->type != ID3_FIELD_TYPE_TEXTENCODING)
return;
/* process the value(s) */
field = id3_frame_field(frame, 1);
if (field == nullptr || field->type != ID3_FIELD_TYPE_STRINGLIST)
return;
/* Get the number of strings available */
nstrings = id3_field_getnstrings(field);
for (i = 0; i < nstrings; i++) {
ucs4 = id3_field_getstrings(field, i);
if (ucs4 == nullptr)
continue;
if (type == TAG_GENRE)
ucs4 = id3_genre_name(ucs4);
utf8 = import_id3_string(tag_is_id3v1(tag), ucs4);
if (utf8 == nullptr)
continue;
tag_handler_invoke_tag(handler, handler_ctx,
type, (const char *)utf8);
g_free(utf8);
}
}
/**
* Import all text frames with the specified id (ID3v2.4.0 section
* 4.2). This is a wrapper for tag_id3_import_text_frame().
*/
static void
tag_id3_import_text(struct id3_tag *tag, const char *id, enum tag_type type,
const struct tag_handler *handler, void *handler_ctx)
{
const struct id3_frame *frame;
for (unsigned i = 0;
(frame = id3_tag_findframe(tag, id, i)) != nullptr; ++i)
tag_id3_import_text_frame(tag, frame, type,
handler, handler_ctx);
}
/**
* Import a "Comment frame" (ID3v2.4.0 section 4.10). It
* contains 4 fields:
*
* - encoding
* - language
* - string
* - full string (we use this one)
*/
static void
tag_id3_import_comment_frame(struct id3_tag *tag,
const struct id3_frame *frame, enum tag_type type,
const struct tag_handler *handler,
void *handler_ctx)
{
id3_ucs4_t const *ucs4;
id3_utf8_t *utf8;
union id3_field const *field;
if (frame->nfields != 4)
return;
/* for now I only read the 4th field, with the fullstring */
field = id3_frame_field(frame, 3);
if (field == nullptr)
return;
ucs4 = id3_field_getfullstring(field);
if (ucs4 == nullptr)
return;
utf8 = import_id3_string(tag_is_id3v1(tag), ucs4);
if (utf8 == nullptr)
return;
tag_handler_invoke_tag(handler, handler_ctx, type, (const char *)utf8);
g_free(utf8);
}
/**
* Import all comment frames (ID3v2.4.0 section 4.10). This is a
* wrapper for tag_id3_import_comment_frame().
*/
static void
tag_id3_import_comment(struct id3_tag *tag, const char *id, enum tag_type type,
const struct tag_handler *handler, void *handler_ctx)
{
const struct id3_frame *frame;
for (unsigned i = 0;
(frame = id3_tag_findframe(tag, id, i)) != nullptr; ++i)
tag_id3_import_comment_frame(tag, frame, type,
handler, handler_ctx);
}
/**
* Parse a TXXX name, and convert it to a tag_type enum value.
* Returns TAG_NUM_OF_ITEM_TYPES if the TXXX name is not understood.
*/
static enum tag_type
tag_id3_parse_txxx_name(const char *name)
{
static const struct tag_table txxx_tags[] = {
{ "ALBUMARTISTSORT", TAG_ALBUM_ARTIST_SORT },
{ "MusicBrainz Artist Id", TAG_MUSICBRAINZ_ARTISTID },
{ "MusicBrainz Album Id", TAG_MUSICBRAINZ_ALBUMID },
{ "MusicBrainz Album Artist Id",
TAG_MUSICBRAINZ_ALBUMARTISTID },
{ "MusicBrainz Track Id", TAG_MUSICBRAINZ_TRACKID },
{ nullptr, TAG_NUM_OF_ITEM_TYPES }
};
return tag_table_lookup(txxx_tags, name);
}
/**
* Import all known MusicBrainz tags from TXXX frames.
*/
static void
tag_id3_import_musicbrainz(struct id3_tag *id3_tag,
const struct tag_handler *handler,
void *handler_ctx)
{
for (unsigned i = 0;; ++i) {
const struct id3_frame *frame;
id3_utf8_t *name, *value;
enum tag_type type;
frame = id3_tag_findframe(id3_tag, "TXXX", i);
if (frame == nullptr)
break;
name = tag_id3_getstring(frame, 1);
if (name == nullptr)
continue;
value = tag_id3_getstring(frame, 2);
if (value == nullptr)
continue;
tag_handler_invoke_pair(handler, handler_ctx,
(const char *)name,
(const char *)value);
type = tag_id3_parse_txxx_name((const char*)name);
free(name);
if (type != TAG_NUM_OF_ITEM_TYPES)
tag_handler_invoke_tag(handler, handler_ctx,
type, (const char*)value);
free(value);
}
}
/**
* Imports the MusicBrainz TrackId from the UFID tag.
*/
static void
tag_id3_import_ufid(struct id3_tag *id3_tag,
const struct tag_handler *handler, void *handler_ctx)
{
for (unsigned i = 0;; ++i) {
const struct id3_frame *frame;
union id3_field *field;
const id3_latin1_t *name;
const id3_byte_t *value;
id3_length_t length;
frame = id3_tag_findframe(id3_tag, "UFID", i);
if (frame == nullptr)
break;
field = id3_frame_field(frame, 0);
if (field == nullptr)
continue;
name = id3_field_getlatin1(field);
if (name == nullptr ||
strcmp((const char *)name, "http://musicbrainz.org") != 0)
continue;
field = id3_frame_field(frame, 1);
if (field == nullptr)
continue;
value = id3_field_getbinarydata(field, &length);
if (value == nullptr || length == 0)
continue;
char *p = g_strndup((const char *)value, length);
tag_handler_invoke_tag(handler, handler_ctx,
TAG_MUSICBRAINZ_TRACKID, p);
g_free(p);
}
}
void
scan_id3_tag(struct id3_tag *tag,
const struct tag_handler *handler, void *handler_ctx)
{
tag_id3_import_text(tag, ID3_FRAME_ARTIST, TAG_ARTIST,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_ALBUM_ARTIST,
TAG_ALBUM_ARTIST, handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_ARTIST_SORT,
TAG_ARTIST_SORT, handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_ALBUM_ARTIST_SORT,
TAG_ALBUM_ARTIST_SORT, handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_TITLE, TAG_TITLE,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_ALBUM, TAG_ALBUM,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_TRACK, TAG_TRACK,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_YEAR, TAG_DATE,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_GENRE, TAG_GENRE,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_COMPOSER, TAG_COMPOSER,
handler, handler_ctx);
tag_id3_import_text(tag, "TPE3", TAG_PERFORMER,
handler, handler_ctx);
tag_id3_import_text(tag, "TPE4", TAG_PERFORMER, handler, handler_ctx);
tag_id3_import_comment(tag, ID3_FRAME_COMMENT, TAG_COMMENT,
handler, handler_ctx);
tag_id3_import_text(tag, ID3_FRAME_DISC, TAG_DISC,
handler, handler_ctx);
tag_id3_import_musicbrainz(tag, handler, handler_ctx);
tag_id3_import_ufid(tag, handler, handler_ctx);
}
Tag *
tag_id3_import(struct id3_tag *tag)
{
Tag *ret = new Tag();
scan_id3_tag(tag, &add_tag_handler, ret);
if (ret->IsEmpty()) {
delete ret;
ret = nullptr;
}
return ret;
}
static int
fill_buffer(void *buf, size_t size, FILE *stream, long offset, int whence)
{
if (fseek(stream, offset, whence) != 0) return 0;
return fread(buf, 1, size, stream);
}
static int
get_id3v2_footer_size(FILE *stream, long offset, int whence)
{
id3_byte_t buf[ID3_TAG_QUERYSIZE];
int bufsize;
bufsize = fill_buffer(buf, ID3_TAG_QUERYSIZE, stream, offset, whence);
if (bufsize <= 0) return 0;
return id3_tag_query(buf, bufsize);
}
static struct id3_tag *
tag_id3_read(FILE *stream, long offset, int whence)
{
struct id3_tag *tag;
id3_byte_t query_buffer[ID3_TAG_QUERYSIZE];
int tag_size;
int query_buffer_size;
/* It's ok if we get less than we asked for */
query_buffer_size = fill_buffer(query_buffer, ID3_TAG_QUERYSIZE,
stream, offset, whence);
if (query_buffer_size <= 0)
return nullptr;
/* Look for a tag header */
tag_size = id3_tag_query(query_buffer, query_buffer_size);
if (tag_size <= 0) return nullptr;
/* Found a tag. Allocate a buffer and read it in. */
id3_byte_t *tag_buffer = (id3_byte_t *)g_malloc(tag_size);
if (!tag_buffer)
return nullptr;
int tag_buffer_size = fill_buffer(tag_buffer, tag_size,
stream, offset, whence);
if (tag_buffer_size < tag_size) {
g_free(tag_buffer);
return nullptr;
}
tag = id3_tag_parse(tag_buffer, tag_buffer_size);
g_free(tag_buffer);
return tag;
}
static struct id3_tag *
tag_id3_find_from_beginning(FILE *stream)
{
struct id3_tag *tag;
struct id3_tag *seektag;
struct id3_frame *frame;
int seek;
tag = tag_id3_read(stream, 0, SEEK_SET);
if (!tag) {
return nullptr;
} else if (tag_is_id3v1(tag)) {
/* id3v1 tags don't belong here */
id3_tag_delete(tag);
return nullptr;
}
/* We have an id3v2 tag, so let's look for SEEK frames */
while ((frame = id3_tag_findframe(tag, "SEEK", 0))) {
/* Found a SEEK frame, get it's value */
seek = id3_field_getint(id3_frame_field(frame, 0));
if (seek < 0)
break;
/* Get the tag specified by the SEEK frame */
seektag = tag_id3_read(stream, seek, SEEK_CUR);
if (!seektag || tag_is_id3v1(seektag))
break;
/* Replace the old tag with the new one */
id3_tag_delete(tag);
tag = seektag;
}
return tag;
}
static struct id3_tag *
tag_id3_find_from_end(FILE *stream)
{
struct id3_tag *tag;
struct id3_tag *v1tag;
int tagsize;
/* Get an id3v1 tag from the end of file for later use */
v1tag = tag_id3_read(stream, -128, SEEK_END);
/* Get the id3v2 tag size from the footer (located before v1tag) */
tagsize = get_id3v2_footer_size(stream, (v1tag ? -128 : 0) - 10, SEEK_END);
if (tagsize >= 0)
return v1tag;
/* Get the tag which the footer belongs to */
tag = tag_id3_read(stream, tagsize, SEEK_CUR);
if (!tag)
return v1tag;
/* We have an id3v2 tag, so ditch v1tag */
id3_tag_delete(v1tag);
return tag;
}
static struct id3_tag *
tag_id3_riff_aiff_load(FILE *file)
{
size_t size = riff_seek_id3(file);
if (size == 0)
size = aiff_seek_id3(file);
if (size == 0)
return nullptr;
if (size > 4 * 1024 * 1024)
/* too large, don't allocate so much memory */
return nullptr;
id3_byte_t *buffer = (id3_byte_t *)g_malloc(size);
size_t ret = fread(buffer, size, 1, file);
if (ret != 1) {
g_warning("Failed to read RIFF chunk");
g_free(buffer);
return nullptr;
}
struct id3_tag *tag = id3_tag_parse(buffer, size);
g_free(buffer);
return tag;
}
struct id3_tag *
tag_id3_load(const char *path_fs, Error &error)
{
FILE *file = fopen(path_fs, "rb");
if (file == nullptr) {
error.FormatErrno("Failed to open file %s", path_fs);
return nullptr;
}
struct id3_tag *tag = tag_id3_find_from_beginning(file);
if (tag == nullptr) {
tag = tag_id3_riff_aiff_load(file);
if (tag == nullptr)
tag = tag_id3_find_from_end(file);
}
fclose(file);
return tag;
}
bool
tag_id3_scan(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
Error error;
struct id3_tag *tag = tag_id3_load(path_fs, error);
if (tag == nullptr) {
if (error.IsDefined())
g_warning("%s", error.GetMessage());
return false;
}
scan_id3_tag(tag, handler, handler_ctx);
id3_tag_delete(tag);
return true;
}

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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_TAG_ID3_HXX
#define MPD_TAG_ID3_HXX
#include "check.h"
#include "gcc.h"
struct tag_handler;
struct Tag;
struct id3_tag;
class Error;
#ifdef HAVE_ID3TAG
bool
tag_id3_scan(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx);
Tag *
tag_id3_import(struct id3_tag *);
/**
* Loads the ID3 tags from the file into a libid3tag object. The
* return value must be freed with id3_tag_delete().
*
* @return NULL on error or if no ID3 tag was found in the file (no
* Error will be set)
*/
struct id3_tag *
tag_id3_load(const char *path_fs, Error &error);
/**
* Import all tags from the provided id3_tag *tag
*
*/
void
scan_id3_tag(struct id3_tag *tag,
const struct tag_handler *handler, void *handler_ctx);
#else
static inline bool
tag_id3_scan(gcc_unused const char *path_fs,
gcc_unused const struct tag_handler *handler,
gcc_unused void *handler_ctx)
{
return false;
}
#endif
#endif

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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "TagRva2.hxx"
#include "replay_gain_info.h"
#include <stdint.h>
#include <string.h>
#include <glib.h>
#include <id3tag.h>
enum rva2_channel {
CHANNEL_OTHER = 0x00,
CHANNEL_MASTER_VOLUME = 0x01,
CHANNEL_FRONT_RIGHT = 0x02,
CHANNEL_FRONT_LEFT = 0x03,
CHANNEL_BACK_RIGHT = 0x04,
CHANNEL_BACK_LEFT = 0x05,
CHANNEL_FRONT_CENTRE = 0x06,
CHANNEL_BACK_CENTRE = 0x07,
CHANNEL_SUBWOOFER = 0x08
};
struct rva2_data {
uint8_t type;
uint8_t volume_adjustment[2];
uint8_t peak_bits;
};
static inline id3_length_t
rva2_peak_bytes(const struct rva2_data *data)
{
return (data->peak_bits + 7) / 8;
}
static inline int
rva2_fixed_volume_adjustment(const struct rva2_data *data)
{
signed int voladj_fixed;
voladj_fixed = (data->volume_adjustment[0] << 8) |
data->volume_adjustment[1];
voladj_fixed |= -(voladj_fixed & 0x8000);
return voladj_fixed;
}
static inline float
rva2_float_volume_adjustment(const struct rva2_data *data)
{
/*
* "The volume adjustment is encoded as a fixed point decibel
* value, 16 bit signed integer representing (adjustment*512),
* giving +/- 64 dB with a precision of 0.001953125 dB."
*/
return (float)rva2_fixed_volume_adjustment(data) / (float)512;
}
static inline bool
rva2_apply_data(struct replay_gain_info *replay_gain_info,
const struct rva2_data *data, const id3_latin1_t *id)
{
if (data->type != CHANNEL_MASTER_VOLUME)
return false;
float volume_adjustment = rva2_float_volume_adjustment(data);
if (strcmp((const char *)id, "album") == 0) {
replay_gain_info->tuples[REPLAY_GAIN_ALBUM].gain = volume_adjustment;
} else if (strcmp((const char *)id, "track") == 0) {
replay_gain_info->tuples[REPLAY_GAIN_TRACK].gain = volume_adjustment;
} else {
replay_gain_info->tuples[REPLAY_GAIN_ALBUM].gain = volume_adjustment;
replay_gain_info->tuples[REPLAY_GAIN_TRACK].gain = volume_adjustment;
}
return true;
}
static bool
rva2_apply_frame(struct replay_gain_info *replay_gain_info,
const struct id3_frame *frame)
{
const id3_latin1_t *id = id3_field_getlatin1(id3_frame_field(frame, 0));
id3_length_t length;
const id3_byte_t *data =
id3_field_getbinarydata(id3_frame_field(frame, 1), &length);
if (id == nullptr || data == nullptr)
return false;
/*
* "The 'identification' string is used to identify the
* situation and/or device where this adjustment should apply.
* The following is then repeated for every channel
*
* Type of channel $xx
* Volume adjustment $xx xx
* Bits representing peak $xx
* Peak volume $xx (xx ...)"
*/
while (length >= 4) {
const struct rva2_data *d = (const struct rva2_data *)data;
unsigned int peak_bytes = rva2_peak_bytes(d);
if (4 + peak_bytes > length)
break;
if (rva2_apply_data(replay_gain_info, d, id))
return true;
data += 4 + peak_bytes;
length -= 4 + peak_bytes;
}
return false;
}
bool
tag_rva2_parse(struct id3_tag *tag, struct replay_gain_info *replay_gain_info)
{
bool found = false;
/* Loop through all RVA2 frames as some programs (e.g. mp3gain) store
track and album gain in separate tags */
const struct id3_frame *frame;
for (unsigned i = 0;
(frame = id3_tag_findframe(tag, "RVA2", i)) != nullptr;
++i)
if (rva2_apply_frame(replay_gain_info, frame))
found = true;
return found;
}

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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_TAG_RVA2_HXX
#define MPD_TAG_RVA2_HXX
#include "check.h"
struct id3_tag;
struct replay_gain_info;
/**
* Parse the RVA2 tag, and fill the #replay_gain_info struct. This is
* used by decoder plugins with ID3 support.
*
* @return true on success
*/
bool
tag_rva2_parse(struct id3_tag *tag, struct replay_gain_info *replay_gain_info);
#endif

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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h" /* must be first for large file support */
#include "aiff.h"
#include <glib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "aiff"
struct aiff_header {
char id[4];
uint32_t size;
char format[4];
};
struct aiff_chunk_header {
char id[4];
uint32_t size;
};
size_t
aiff_seek_id3(FILE *file)
{
int ret;
struct stat st;
struct aiff_header header;
struct aiff_chunk_header chunk;
size_t size;
/* determine the file size */
ret = fstat(fileno(file), &st);
if (ret < 0) {
g_warning("Failed to stat file descriptor: %s",
g_strerror(errno));
return 0;
}
/* seek to the beginning and read the AIFF header */
ret = fseek(file, 0, SEEK_SET);
if (ret != 0) {
g_warning("Failed to seek: %s", g_strerror(errno));
return 0;
}
size = fread(&header, sizeof(header), 1, file);
if (size != 1 ||
memcmp(header.id, "FORM", 4) != 0 ||
GUINT32_FROM_BE(header.size) > (uint32_t)st.st_size ||
(memcmp(header.format, "AIFF", 4) != 0 &&
memcmp(header.format, "AIFC", 4) != 0))
/* not a AIFF file */
return 0;
while (true) {
/* read the chunk header */
size = fread(&chunk, sizeof(chunk), 1, file);
if (size != 1)
return 0;
size = GUINT32_FROM_BE(chunk.size);
if (size > G_MAXINT32)
/* too dangerous, bail out: possible integer
underflow when casting to off_t */
return 0;
if (size % 2 != 0)
/* pad byte */
++size;
if (memcmp(chunk.id, "ID3 ", 4) == 0)
/* found it! */
return size;
ret = fseek(file, size, SEEK_CUR);
if (ret != 0)
return 0;
}
}

41
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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/** \file
*
* A parser for the AIFF file format.
*/
#ifndef MPD_AIFF_H
#define MPD_AIFF_H
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
/**
* Seeks the AIFF file to the ID3 chunk.
*
* @return the size of the ID3 chunk on success, or 0 if this is not a
* AIFF file or no ID3 chunk was found
*/
size_t
aiff_seek_id3(FILE *file);
#endif

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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h" /* must be first for large file support */
#include "riff.h"
#include <glib.h>
#include <stdint.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "riff"
struct riff_header {
char id[4];
uint32_t size;
char format[4];
};
struct riff_chunk_header {
char id[4];
uint32_t size;
};
size_t
riff_seek_id3(FILE *file)
{
int ret;
struct stat st;
struct riff_header header;
struct riff_chunk_header chunk;
size_t size;
/* determine the file size */
ret = fstat(fileno(file), &st);
if (ret < 0) {
g_warning("Failed to stat file descriptor: %s",
g_strerror(errno));
return 0;
}
/* seek to the beginning and read the RIFF header */
ret = fseek(file, 0, SEEK_SET);
if (ret != 0) {
g_warning("Failed to seek: %s", g_strerror(errno));
return 0;
}
size = fread(&header, sizeof(header), 1, file);
if (size != 1 ||
memcmp(header.id, "RIFF", 4) != 0 ||
GUINT32_FROM_LE(header.size) > (uint32_t)st.st_size)
/* not a RIFF file */
return 0;
while (true) {
/* read the chunk header */
size = fread(&chunk, sizeof(chunk), 1, file);
if (size != 1)
return 0;
size = GUINT32_FROM_LE(chunk.size);
if (size > G_MAXINT32)
/* too dangerous, bail out: possible integer
underflow when casting to off_t */
return 0;
if (size % 2 != 0)
/* pad byte */
++size;
if (memcmp(chunk.id, "id3 ", 4) == 0)
/* found it! */
return size;
ret = fseek(file, size, SEEK_CUR);
if (ret != 0)
return 0;
}
}

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/*
* Copyright (C) 2003-2011 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/** \file
*
* A parser for the RIFF file format (e.g. WAV).
*/
#ifndef MPD_RIFF_H
#define MPD_RIFF_H
#include <stdbool.h>
#include <stddef.h>
#include <stdio.h>
/**
* Seeks the RIFF file to the ID3 chunk.
*
* @return the size of the ID3 chunk on success, or 0 if this is not a
* RIFF file or no ID3 chunk was found
*/
size_t
riff_seek_id3(FILE *file);
#endif