commit c4108ce3eb6805afb493cbfae288eb62f41808fa
parent df57c70280d34506c4221980f4446aa8cce4322e
Author: Christian Grothoff <christian@grothoff.org>
Date: Thu, 17 Dec 2009 13:41:48 +0000
mp3
Diffstat:
5 files changed, 565 insertions(+), 558 deletions(-)
diff --git a/src/include/extractor.h b/src/include/extractor.h
@@ -254,32 +254,36 @@ enum EXTRACTOR_MetaType
EXTRACTOR_METATYPE_COMPANY = 125,
EXTRACTOR_METATYPE_MANAGER = 126,
EXTRACTOR_METATYPE_REVISION_NUMBER = 127,
-
- /* fixme: used up to here! */
- EXTRACTOR_METATYPE_SCALE = 108,
-
- /* FIXME: transcribe & renumber those below */
- EXTRACTOR_METATYPE_USED_FONTS = 37,
- EXTRACTOR_METATYPE_PAGE_ORDER = 38,
-
/* music / video specifics */
+ EXTRACTOR_METATYPE_DURATION = 111,
+ EXTRACTOR_METATYPE_ALBUM = 11,
+ EXTRACTOR_METATYPE_ARTIST = 5,
+ EXTRACTOR_METATYPE_GENRE = 12,
+ EXTRACTOR_METATYPE_TRACK_NUMBER = 132,
+
EXTRACTOR_METATYPE_LYRICS = 67,
EXTRACTOR_METATYPE_CONDUCTOR = 64,
EXTRACTOR_METATYPE_INTERPRET = 65,
EXTRACTOR_METATYPE_MUSIC_CD_IDENTIFIER = 117,
EXTRACTOR_METATYPE_PLAY_COUNTER = 118,
- EXTRACTOR_METATYPE_DURATION = 111,
EXTRACTOR_METATYPE_MOVIE_DIRECTOR = 110,
EXTRACTOR_METATYPE_SONG_COUNT = 127,
EXTRACTOR_METATYPE_STARTING_SONG = 128,
EXTRACTOR_METATYPE_MUSICIAN_CREDITS_LIST = 123,
- EXTRACTOR_METATYPE_TRACK_NUMBER = 132,
EXTRACTOR_METATYPE_DISC_NUMBER = 134,
- EXTRACTOR_METATYPE_ALBUM = 11,
- EXTRACTOR_METATYPE_ARTIST = 5,
- EXTRACTOR_METATYPE_GENRE = 12,
+
+
+ /* fixme: used up to here! */
+ EXTRACTOR_METATYPE_SCALE = 108,
+
+
+
+ /* FIXME: transcribe & renumber those below */
+ EXTRACTOR_METATYPE_USED_FONTS = 37,
+ EXTRACTOR_METATYPE_PAGE_ORDER = 38,
+
/* numeric metrics */
EXTRACTOR_METATYPE_POPULARITY_METER = 119,
diff --git a/src/main/extractor_metatypes.c b/src/main/extractor_metatypes.c
@@ -300,6 +300,7 @@ static const struct MetaTypeDescription meta_type_descriptions[] = {
gettext_noop ("number of lines") },
{ gettext_noop ("paragraph count"),
gettext_noop ("number o paragraphs") },
+ /* 120 */
{ gettext_noop ("word count"),
gettext_noop ("number of words") },
{ gettext_noop ("page orientation"),
@@ -310,10 +311,25 @@ static const struct MetaTypeDescription meta_type_descriptions[] = {
gettext_noop ("template the document uses or is based on") },
{ gettext_noop ("company"),
gettext_noop ("") },
+ /* 125 */
{ gettext_noop ("manager"),
gettext_noop ("") },
{ gettext_noop ("revision number"),
gettext_noop ("") },
+ { gettext_noop ("duration"),
+ gettext_noop ("play time for the medium") },
+ { gettext_noop ("album"),
+ gettext_noop ("name of the album") },
+ { gettext_noop ("artist"),
+ gettext_noop ("name of the artist or band") },
+ { gettext_noop ("genre"),
+ gettext_noop ("") },
+ { gettext_noop ("track number"),
+ gettext_noop ("original number of the track on the distribution medium") },
+ { gettext_noop (""),
+ gettext_noop ("") },
+ { gettext_noop (""),
+ gettext_noop ("") },
{ gettext_noop (""),
gettext_noop ("") },
{ gettext_noop (""),
diff --git a/src/plugins/Makefile.am b/src/plugins/Makefile.am
@@ -79,6 +79,7 @@ plugin_LTLIBRARIES = \
libextractor_jpeg.la \
libextractor_man.la \
libextractor_mime.la \
+ libextractor_mp3.la \
$(ole2) \
libextractor_odf.la \
$(pdf) \
@@ -162,6 +163,14 @@ libextractor_mime_la_SOURCES = \
libextractor_mime_la_LDFLAGS = \
$(PLUGINFLAGS)
+libextractor_mp3_la_SOURCES = \
+ mp3_extractor.c
+libextractor_mp3_la_LDFLAGS = \
+ $(PLUGINFLAGS)
+libextractor_mp3_la_LIBADD = \
+ $(top_builddir)/src/common/libextractor_common.la \
+ $(LE_LIBINTL)
+
libextractor_ole2_la_SOURCES = \
ole2_extractor.c
libextractor_ole2_la_CFLAGS = \
@@ -218,7 +227,6 @@ OLD_LIBS = \
libextractor_id3v2.la \
libextractor_id3v24.la \
libextractor_id3v23.la \
- libextractor_mp3.la \
$(extrampeg) \
libextractor_nsf.la \
libextractor_nsfe.la \
@@ -281,14 +289,6 @@ libextractor_wav_la_LDFLAGS = \
libextractor_wav_la_LIBADD = \
$(LE_LIBINTL)
-libextractor_mp3_la_SOURCES = \
- mp3extractor.c
-libextractor_mp3_la_LDFLAGS = \
- $(PLUGINFLAGS)
-libextractor_mp3_la_LIBADD = \
- $(top_builddir)/src/common/libextractor_common.la \
- $(LE_LIBINTL)
-
libextractor_id3v2_la_SOURCES = \
id3v2extractor.c
libextractor_id3v2_la_LDFLAGS = \
diff --git a/src/plugins/mp3_extractor.c b/src/plugins/mp3_extractor.c
@@ -0,0 +1,523 @@
+/*
+ This file is part of libextractor.
+ (C) 2002, 2003, 2004, 2006, 2009 Vidyut Samanta and Christian Grothoff
+
+ libextractor 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, or (at your
+ option) any later version.
+
+ libextractor 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 libextractor; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+
+
+ Some of this code is based on AVInfo 1.0 alpha 11
+ (c) George Shuklin, gs]AT[shounen.ru, 2002-2004
+ http://shounen.ru/soft/avinfo/
+
+ */
+
+#define DEBUG_EXTRACT_MP3 0
+
+#include "platform.h"
+#include "extractor.h"
+#include "convert.h"
+#include <string.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdlib.h>
+
+typedef struct
+{
+ char *title;
+ char *artist;
+ char *album;
+ char *year;
+ char *comment;
+ const char *genre;
+ unsigned int track_number;
+} id3tag;
+
+static const char *const genre_names[] = {
+ gettext_noop ("Blues"),
+ gettext_noop ("Classic Rock"),
+ gettext_noop ("Country"),
+ gettext_noop ("Dance"),
+ gettext_noop ("Disco"),
+ gettext_noop ("Funk"),
+ gettext_noop ("Grunge"),
+ gettext_noop ("Hip-Hop"),
+ gettext_noop ("Jazz"),
+ gettext_noop ("Metal"),
+ gettext_noop ("New Age"),
+ gettext_noop ("Oldies"),
+ gettext_noop ("Other"),
+ gettext_noop ("Pop"),
+ gettext_noop ("R&B"),
+ gettext_noop ("Rap"),
+ gettext_noop ("Reggae"),
+ gettext_noop ("Rock"),
+ gettext_noop ("Techno"),
+ gettext_noop ("Industrial"),
+ gettext_noop ("Alternative"),
+ gettext_noop ("Ska"),
+ gettext_noop ("Death Metal"),
+ gettext_noop ("Pranks"),
+ gettext_noop ("Soundtrack"),
+ gettext_noop ("Euro-Techno"),
+ gettext_noop ("Ambient"),
+ gettext_noop ("Trip-Hop"),
+ gettext_noop ("Vocal"),
+ gettext_noop ("Jazz+Funk"),
+ gettext_noop ("Fusion"),
+ gettext_noop ("Trance"),
+ gettext_noop ("Classical"),
+ gettext_noop ("Instrumental"),
+ gettext_noop ("Acid"),
+ gettext_noop ("House"),
+ gettext_noop ("Game"),
+ gettext_noop ("Sound Clip"),
+ gettext_noop ("Gospel"),
+ gettext_noop ("Noise"),
+ gettext_noop ("Alt. Rock"),
+ gettext_noop ("Bass"),
+ gettext_noop ("Soul"),
+ gettext_noop ("Punk"),
+ gettext_noop ("Space"),
+ gettext_noop ("Meditative"),
+ gettext_noop ("Instrumental Pop"),
+ gettext_noop ("Instrumental Rock"),
+ gettext_noop ("Ethnic"),
+ gettext_noop ("Gothic"),
+ gettext_noop ("Darkwave"),
+ gettext_noop ("Techno-Industrial"),
+ gettext_noop ("Electronic"),
+ gettext_noop ("Pop-Folk"),
+ gettext_noop ("Eurodance"),
+ gettext_noop ("Dream"),
+ gettext_noop ("Southern Rock"),
+ gettext_noop ("Comedy"),
+ gettext_noop ("Cult"),
+ gettext_noop ("Gangsta Rap"),
+ gettext_noop ("Top 40"),
+ gettext_noop ("Christian Rap"),
+ gettext_noop ("Pop/Funk"),
+ gettext_noop ("Jungle"),
+ gettext_noop ("Native American"),
+ gettext_noop ("Cabaret"),
+ gettext_noop ("New Wave"),
+ gettext_noop ("Psychedelic"),
+ gettext_noop ("Rave"),
+ gettext_noop ("Showtunes"),
+ gettext_noop ("Trailer"),
+ gettext_noop ("Lo-Fi"),
+ gettext_noop ("Tribal"),
+ gettext_noop ("Acid Punk"),
+ gettext_noop ("Acid Jazz"),
+ gettext_noop ("Polka"),
+ gettext_noop ("Retro"),
+ gettext_noop ("Musical"),
+ gettext_noop ("Rock & Roll"),
+ gettext_noop ("Hard Rock"),
+ gettext_noop ("Folk"),
+ gettext_noop ("Folk/Rock"),
+ gettext_noop ("National Folk"),
+ gettext_noop ("Swing"),
+ gettext_noop ("Fast-Fusion"),
+ gettext_noop ("Bebob"),
+ gettext_noop ("Latin"),
+ gettext_noop ("Revival"),
+ gettext_noop ("Celtic"),
+ gettext_noop ("Bluegrass"),
+ gettext_noop ("Avantgarde"),
+ gettext_noop ("Gothic Rock"),
+ gettext_noop ("Progressive Rock"),
+ gettext_noop ("Psychedelic Rock"),
+ gettext_noop ("Symphonic Rock"),
+ gettext_noop ("Slow Rock"),
+ gettext_noop ("Big Band"),
+ gettext_noop ("Chorus"),
+ gettext_noop ("Easy Listening"),
+ gettext_noop ("Acoustic"),
+ gettext_noop ("Humour"),
+ gettext_noop ("Speech"),
+ gettext_noop ("Chanson"),
+ gettext_noop ("Opera"),
+ gettext_noop ("Chamber Music"),
+ gettext_noop ("Sonata"),
+ gettext_noop ("Symphony"),
+ gettext_noop ("Booty Bass"),
+ gettext_noop ("Primus"),
+ gettext_noop ("Porn Groove"),
+ gettext_noop ("Satire"),
+ gettext_noop ("Slow Jam"),
+ gettext_noop ("Club"),
+ gettext_noop ("Tango"),
+ gettext_noop ("Samba"),
+ gettext_noop ("Folklore"),
+ gettext_noop ("Ballad"),
+ gettext_noop ("Power Ballad"),
+ gettext_noop ("Rhythmic Soul"),
+ gettext_noop ("Freestyle"),
+ gettext_noop ("Duet"),
+ gettext_noop ("Punk Rock"),
+ gettext_noop ("Drum Solo"),
+ gettext_noop ("A Cappella"),
+ gettext_noop ("Euro-House"),
+ gettext_noop ("Dance Hall"),
+ gettext_noop ("Goa"),
+ gettext_noop ("Drum & Bass"),
+ gettext_noop ("Club-House"),
+ gettext_noop ("Hardcore"),
+ gettext_noop ("Terror"),
+ gettext_noop ("Indie"),
+ gettext_noop ("BritPop"),
+ gettext_noop ("Negerpunk"),
+ gettext_noop ("Polsk Punk"),
+ gettext_noop ("Beat"),
+ gettext_noop ("Christian Gangsta Rap"),
+ gettext_noop ("Heavy Metal"),
+ gettext_noop ("Black Metal"),
+ gettext_noop ("Crossover"),
+ gettext_noop ("Contemporary Christian"),
+ gettext_noop ("Christian Rock"),
+ gettext_noop ("Merengue"),
+ gettext_noop ("Salsa"),
+ gettext_noop ("Thrash Metal"),
+ gettext_noop ("Anime"),
+ gettext_noop ("JPop"),
+ gettext_noop ("Synthpop"),
+};
+
+#define GENRE_NAME_COUNT \
+ ((unsigned int)(sizeof genre_names / sizeof (const char *const)))
+
+
+#define MAX_MP3_SCAN_DEEP 16768
+const int max_frames_scan = 1024;
+enum
+{ MPEG_ERR = 0, MPEG_V1 = 1, MPEG_V2 = 2, MPEG_V25 = 3 };
+
+enum
+{ LAYER_ERR = 0, LAYER_1 = 1, LAYER_2 = 2, LAYER_3 = 3 };
+
+#define MPA_SYNC_MASK ((unsigned int) 0xFFE00000)
+#define MPA_LAST_SYNC_BIT_MASK ((unsigned int) 0x00100000)
+#define MPA_VERSION_MASK ((unsigned int) 0x00080000)
+#define MPA_LAYER_MASK ((unsigned int) 0x3)
+#define MPA_LAYER_SHIFT 17
+#define MPA_BITRATE_MASK ((unsigned int) 0xF)
+#define MPA_BITRATE_SHIFT 12
+#define MPA_FREQ_MASK ((unsigned int) 0x3)
+#define MPA_FREQ_SHIFT 10
+#define MPA_CHMODE_MASK ((unsigned int) 0x3)
+#define MPA_CHMODE_SHIFT 6
+#define MPA_PADDING_SHIFT 9
+#define MPA_COPYRIGHT_SHIFT 3
+#define MPA_ORIGINAL_SHIFT 2
+
+static const unsigned int bitrate_table[16][6] = {
+ {0, 0, 0, 0, 0, 0},
+ {32, 32, 32, 32, 8, 8},
+ {64, 48, 40, 48, 16, 16},
+ {96, 56, 48, 56, 24, 24},
+ {128, 64, 56, 64, 32, 32},
+ {160, 80, 64, 80, 40, 40},
+ {192, 96, 80, 96, 48, 48},
+ {224, 112, 96, 112, 56, 56},
+ {256, 128, 112, 128, 64, 64},
+ {288, 160, 128, 144, 80, 80},
+ {320, 192, 160, 160, 96, 96},
+ {352, 224, 192, 176, 112, 112},
+ {384, 256, 224, 192, 128, 128},
+ {416, 320, 256, 224, 144, 144},
+ {448, 384, 320, 256, 160, 160},
+ {-1, -1, -1, -1, -1, -1}
+};
+static const int freq_table[4][3] = {
+ {44100, 22050, 11025},
+ {48000, 24000, 12000},
+ {32000, 16000, 8000}
+};
+static const char * const channel_modes[4] = {
+ gettext_noop("stereo"),
+ gettext_noop("joint stereo"),
+ gettext_noop("dual channel"),
+ gettext_noop("mono")
+};
+static const char * const mpeg_versions[3] = {
+ gettext_noop("MPEG-1"),
+ gettext_noop("MPEG-2"),
+ gettext_noop("MPEG-2.5")
+};
+static const char * const layer_names[3] = {
+ gettext_noop("Layer I"),
+ gettext_noop("Layer II"),
+ gettext_noop("Layer III")
+};
+
+
+#define OK 0
+#define SYSERR 1
+#define INVALID_ID3 2
+
+static void
+trim (char *k)
+{
+ while ((strlen (k) > 0) && (isspace (k[strlen (k) - 1])))
+ k[strlen (k) - 1] = '\0';
+}
+
+static int
+get_id3 (const char *data, size_t size, id3tag * id3)
+{
+ const char *pos;
+
+ if (size < 128)
+ return INVALID_ID3;
+
+ pos = &data[size - 128];
+ if (0 != strncmp ("TAG", pos, 3))
+ return INVALID_ID3;
+ pos += 3;
+
+ id3->title = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+ trim (id3->title);
+ pos += 30;
+ id3->artist = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+ trim (id3->artist);
+ pos += 30;
+ id3->album = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+ trim (id3->album);
+ pos += 30;
+ id3->year = EXTRACTOR_common_convert_to_utf8 (pos, 4, "ISO-8859-1");
+ trim (id3->year);
+ pos += 4;
+ id3->comment = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
+ trim (id3->comment);
+ if ( (pos[28] == '\0') &&
+ (pos[29] != '\0') )
+ {
+ /* ID3v1.1 */
+ id3->track_number = pos[29];
+ }
+ else
+ {
+ id3->track_number = 0;
+ }
+ pos += 30;
+ id3->genre = "";
+ if (pos[0] < GENRE_NAME_COUNT)
+ id3->genre = dgettext (PACKAGE, genre_names[(unsigned) pos[0]]);
+ return OK;
+}
+
+
+#define ADDR(s,t) do { if (0 != proc (proc_cls, "mp3", t, EXTRACTOR_METAFORMAT_UTF8, "text/plain", s, strlen(s)+1)) return 1; } while (0)
+
+static int
+mp3parse (const unsigned char *data, size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls)
+{
+ unsigned int header;
+ int counter = 0;
+ char mpeg_ver = 0;
+ char layer = 0;
+ int idx_num = 0;
+ int bitrate = 0; /*used for each frame */
+ int avg_bps = 0; /*average bitrate */
+ int vbr_flag = 0;
+ int copyright_flag = 0;
+ int original_flag = 0;
+ int length = 0;
+ int sample_rate = 0;
+ int ch = 0;
+ int frame_size;
+ int frames = 0;
+ size_t pos = 0;
+ char format[512];
+
+ do
+ {
+ /* seek for frame start */
+ if (pos + sizeof (header) > size)
+ {
+ return 0;
+ } /*unable to find header */
+ header = (data[pos] << 24) | (data[pos+1] << 16) |
+ (data[pos+2] << 8) | data[pos+3];
+ if ((header & MPA_SYNC_MASK) == MPA_SYNC_MASK)
+ break; /*found header sync */
+ pos++;
+ counter++; /*next try */
+ }
+ while (counter < MAX_MP3_SCAN_DEEP);
+ if (counter >= MAX_MP3_SCAN_DEEP)
+ return 0;
+ ADDR ("audio/mpeg", EXTRACTOR_METATYPE_MIMETYPE);
+
+ do
+ { /*ok, now we found a mp3 frame header */
+ frames++;
+ switch (header & (MPA_LAST_SYNC_BIT_MASK | MPA_VERSION_MASK))
+ {
+ case (MPA_LAST_SYNC_BIT_MASK | MPA_VERSION_MASK):
+ mpeg_ver = MPEG_V1;
+ break;
+ case (MPA_LAST_SYNC_BIT_MASK):
+ mpeg_ver = MPEG_V2;
+ break;
+ case 0:
+ mpeg_ver = MPEG_V25;
+ break;
+ case (MPA_VERSION_MASK):
+ default:
+ mpeg_ver = MPEG_ERR; /*error */
+ break;
+ }
+ switch (header & (MPA_LAYER_MASK << MPA_LAYER_SHIFT))
+ {
+ case (0x1 << MPA_LAYER_SHIFT):
+ layer = LAYER_3;
+ break;
+ case (0x2 << MPA_LAYER_SHIFT):
+ layer = LAYER_2;
+ break;
+ case (0x3 << MPA_LAYER_SHIFT):
+ layer = LAYER_1;
+ break;
+ case 0x0:
+ default:
+ layer = LAYER_ERR; /*error */
+ }
+ if (!layer || !mpeg_ver)
+ return 0; /*unknown mpeg type */
+ if (mpeg_ver < MPEG_V25)
+ idx_num = (mpeg_ver - 1) * 3 + layer - 1;
+ else
+ idx_num = 2 + layer;
+ bitrate = 1000 * bitrate_table[(header >> MPA_BITRATE_SHIFT) &
+ MPA_BITRATE_MASK][idx_num];
+ if (bitrate < 0)
+ {
+ frames--;
+ break;
+ } /*error in header */
+ sample_rate = freq_table[(header >> MPA_FREQ_SHIFT) &
+ MPA_FREQ_MASK][mpeg_ver - 1];
+ if (sample_rate < 0)
+ {
+ frames--;
+ break;
+ } /*error in header */
+ ch = ((header >> MPA_CHMODE_SHIFT) & MPA_CHMODE_MASK);
+ copyright_flag = (header >> MPA_COPYRIGHT_SHIFT) & 0x1;
+ original_flag = (header >> MPA_ORIGINAL_SHIFT) & 0x1;
+ frame_size =
+ 144 * bitrate / (sample_rate ? sample_rate : 1) +
+ ((header >> MPA_PADDING_SHIFT) & 0x1);
+ avg_bps += bitrate / 1000;
+
+ pos += frame_size - 4;
+ if (frames > max_frames_scan)
+ break; /*optimization */
+ if (avg_bps / frames != bitrate / 1000)
+ vbr_flag = 1;
+ if (pos + sizeof (header) > size)
+ break; /* EOF */
+ header = (data[pos] << 24) | (data[pos+1] << 16) |
+ (data[pos+2] << 8) | data[pos+3];
+ }
+ while ((header & MPA_SYNC_MASK) == MPA_SYNC_MASK);
+
+ if (!frames)
+ return 0; /*no valid frames */
+ avg_bps = avg_bps / frames;
+ if (max_frames_scan)
+ { /*if not all frames scaned */
+ length =
+ size / (avg_bps ? avg_bps : bitrate ? bitrate : 0xFFFFFFFF) / 125;
+ }
+ else
+ {
+ length = 1152 * frames / (sample_rate ? sample_rate : 0xFFFFFFFF);
+ }
+
+ ADDR (mpeg_versions[mpeg_ver-1], EXTRACTOR_METATYPE_FORMAT_VERSION);
+ snprintf (format,
+ sizeof(format),
+ "%s %s audio, %d kbps (%s), %d Hz, %s, %s, %s",
+ mpeg_versions[mpeg_ver-1],
+ layer_names[layer-1],
+ avg_bps,
+ vbr_flag ? _("VBR") : _("CBR"),
+ sample_rate,
+ channel_modes[ch],
+ copyright_flag ? _("copyright") : _("no copyright"),
+ original_flag ? _("original") : _("copy") );
+
+ ADDR (format, EXTRACTOR_METATYPE_RESOURCE_TYPE);
+ snprintf (format,
+ sizeof (format), "%dm%02d",
+ length / 60, length % 60);
+ ADDR (format, EXTRACTOR_METATYPE_DURATION);
+ return 0;
+}
+
+
+#define ADD(s,t) do { if (0 != proc (proc_cls, "mp3", t, EXTRACTOR_METAFORMAT_UTF8, "text/plain", s, strlen(s)+1)) goto FINISH; } while (0)
+
+
+/* mimetype = audio/mpeg */
+int
+EXTRACTOR_mp3_extract (const char *data,
+ size_t size,
+ EXTRACTOR_MetaDataProcessor proc,
+ void *proc_cls,
+ const char *options)
+{
+ id3tag info;
+ char track[16];
+ int ret;
+
+ if (0 != get_id3 (data, size, &info))
+ return 0;
+ if (strlen (info.title) > 0)
+ ADD (info.title, EXTRACTOR_METATYPE_TITLE);
+ if (strlen (info.artist) > 0)
+ ADD (info.artist, EXTRACTOR_METATYPE_ARTIST);
+ if (strlen (info.album) > 0)
+ ADD (info.album, EXTRACTOR_METATYPE_ALBUM);
+ if (strlen (info.year) > 0)
+ ADD (info.year, EXTRACTOR_METATYPE_PUBLICATION_YEAR);
+ if (strlen (info.genre) > 0)
+ ADD (info.genre, EXTRACTOR_METATYPE_GENRE);
+ if (strlen (info.comment) > 0)
+ ADD (info.comment, EXTRACTOR_METATYPE_COMMENT);
+ if (info.track_number != 0)
+ {
+ snprintf(track,
+ sizeof(track), "%u", info.track_number);
+ ADD (track, EXTRACTOR_METATYPE_TRACK_NUMBER);
+ }
+ ret = mp3parse ((const unsigned char *) data, size, proc, proc_cls);
+FINISH:
+ free (info.title);
+ free (info.year);
+ free (info.album);
+ free (info.artist);
+ free (info.comment);
+ return ret;
+}
+
+/* end of mp3_extractor.c */
diff --git a/src/plugins/mp3extractor.c b/src/plugins/mp3extractor.c
@@ -1,536 +0,0 @@
-/*
- This file is part of libextractor.
- (C) 2002, 2003, 2004, 2006 Vidyut Samanta and Christian Grothoff
-
- libextractor 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, or (at your
- option) any later version.
-
- libextractor 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 libextractor; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-
-
- Some of this code is based on AVInfo 1.0 alpha 11
- (c) George Shuklin, gs]AT[shounen.ru, 2002-2004
- http://shounen.ru/soft/avinfo/
-
- */
-
-#define DEBUG_EXTRACT_MP3 0
-
-#include "platform.h"
-#include "extractor.h"
-#include "convert.h"
-#include <string.h>
-#include <stdio.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <unistd.h>
-#include <stdlib.h>
-
-typedef struct
-{
- char *title;
- char *artist;
- char *album;
- char *year;
- char *comment;
- const char *genre;
- unsigned int track_number;
-} id3tag;
-
-static const char *const genre_names[] = {
- gettext_noop ("Blues"),
- gettext_noop ("Classic Rock"),
- gettext_noop ("Country"),
- gettext_noop ("Dance"),
- gettext_noop ("Disco"),
- gettext_noop ("Funk"),
- gettext_noop ("Grunge"),
- gettext_noop ("Hip-Hop"),
- gettext_noop ("Jazz"),
- gettext_noop ("Metal"),
- gettext_noop ("New Age"),
- gettext_noop ("Oldies"),
- gettext_noop ("Other"),
- gettext_noop ("Pop"),
- gettext_noop ("R&B"),
- gettext_noop ("Rap"),
- gettext_noop ("Reggae"),
- gettext_noop ("Rock"),
- gettext_noop ("Techno"),
- gettext_noop ("Industrial"),
- gettext_noop ("Alternative"),
- gettext_noop ("Ska"),
- gettext_noop ("Death Metal"),
- gettext_noop ("Pranks"),
- gettext_noop ("Soundtrack"),
- gettext_noop ("Euro-Techno"),
- gettext_noop ("Ambient"),
- gettext_noop ("Trip-Hop"),
- gettext_noop ("Vocal"),
- gettext_noop ("Jazz+Funk"),
- gettext_noop ("Fusion"),
- gettext_noop ("Trance"),
- gettext_noop ("Classical"),
- gettext_noop ("Instrumental"),
- gettext_noop ("Acid"),
- gettext_noop ("House"),
- gettext_noop ("Game"),
- gettext_noop ("Sound Clip"),
- gettext_noop ("Gospel"),
- gettext_noop ("Noise"),
- gettext_noop ("Alt. Rock"),
- gettext_noop ("Bass"),
- gettext_noop ("Soul"),
- gettext_noop ("Punk"),
- gettext_noop ("Space"),
- gettext_noop ("Meditative"),
- gettext_noop ("Instrumental Pop"),
- gettext_noop ("Instrumental Rock"),
- gettext_noop ("Ethnic"),
- gettext_noop ("Gothic"),
- gettext_noop ("Darkwave"),
- gettext_noop ("Techno-Industrial"),
- gettext_noop ("Electronic"),
- gettext_noop ("Pop-Folk"),
- gettext_noop ("Eurodance"),
- gettext_noop ("Dream"),
- gettext_noop ("Southern Rock"),
- gettext_noop ("Comedy"),
- gettext_noop ("Cult"),
- gettext_noop ("Gangsta Rap"),
- gettext_noop ("Top 40"),
- gettext_noop ("Christian Rap"),
- gettext_noop ("Pop/Funk"),
- gettext_noop ("Jungle"),
- gettext_noop ("Native American"),
- gettext_noop ("Cabaret"),
- gettext_noop ("New Wave"),
- gettext_noop ("Psychedelic"),
- gettext_noop ("Rave"),
- gettext_noop ("Showtunes"),
- gettext_noop ("Trailer"),
- gettext_noop ("Lo-Fi"),
- gettext_noop ("Tribal"),
- gettext_noop ("Acid Punk"),
- gettext_noop ("Acid Jazz"),
- gettext_noop ("Polka"),
- gettext_noop ("Retro"),
- gettext_noop ("Musical"),
- gettext_noop ("Rock & Roll"),
- gettext_noop ("Hard Rock"),
- gettext_noop ("Folk"),
- gettext_noop ("Folk/Rock"),
- gettext_noop ("National Folk"),
- gettext_noop ("Swing"),
- gettext_noop ("Fast-Fusion"),
- gettext_noop ("Bebob"),
- gettext_noop ("Latin"),
- gettext_noop ("Revival"),
- gettext_noop ("Celtic"),
- gettext_noop ("Bluegrass"),
- gettext_noop ("Avantgarde"),
- gettext_noop ("Gothic Rock"),
- gettext_noop ("Progressive Rock"),
- gettext_noop ("Psychedelic Rock"),
- gettext_noop ("Symphonic Rock"),
- gettext_noop ("Slow Rock"),
- gettext_noop ("Big Band"),
- gettext_noop ("Chorus"),
- gettext_noop ("Easy Listening"),
- gettext_noop ("Acoustic"),
- gettext_noop ("Humour"),
- gettext_noop ("Speech"),
- gettext_noop ("Chanson"),
- gettext_noop ("Opera"),
- gettext_noop ("Chamber Music"),
- gettext_noop ("Sonata"),
- gettext_noop ("Symphony"),
- gettext_noop ("Booty Bass"),
- gettext_noop ("Primus"),
- gettext_noop ("Porn Groove"),
- gettext_noop ("Satire"),
- gettext_noop ("Slow Jam"),
- gettext_noop ("Club"),
- gettext_noop ("Tango"),
- gettext_noop ("Samba"),
- gettext_noop ("Folklore"),
- gettext_noop ("Ballad"),
- gettext_noop ("Power Ballad"),
- gettext_noop ("Rhythmic Soul"),
- gettext_noop ("Freestyle"),
- gettext_noop ("Duet"),
- gettext_noop ("Punk Rock"),
- gettext_noop ("Drum Solo"),
- gettext_noop ("A Cappella"),
- gettext_noop ("Euro-House"),
- gettext_noop ("Dance Hall"),
- gettext_noop ("Goa"),
- gettext_noop ("Drum & Bass"),
- gettext_noop ("Club-House"),
- gettext_noop ("Hardcore"),
- gettext_noop ("Terror"),
- gettext_noop ("Indie"),
- gettext_noop ("BritPop"),
- gettext_noop ("Negerpunk"),
- gettext_noop ("Polsk Punk"),
- gettext_noop ("Beat"),
- gettext_noop ("Christian Gangsta Rap"),
- gettext_noop ("Heavy Metal"),
- gettext_noop ("Black Metal"),
- gettext_noop ("Crossover"),
- gettext_noop ("Contemporary Christian"),
- gettext_noop ("Christian Rock"),
- gettext_noop ("Merengue"),
- gettext_noop ("Salsa"),
- gettext_noop ("Thrash Metal"),
- gettext_noop ("Anime"),
- gettext_noop ("JPop"),
- gettext_noop ("Synthpop"),
-};
-
-#define GENRE_NAME_COUNT \
- ((unsigned int)(sizeof genre_names / sizeof (const char *const)))
-
-
-#define MAX_MP3_SCAN_DEEP 16768
-const int max_frames_scan = 1024;
-enum
-{ MPEG_ERR = 0, MPEG_V1 = 1, MPEG_V2 = 2, MPEG_V25 = 3 };
-
-enum
-{ LAYER_ERR = 0, LAYER_1 = 1, LAYER_2 = 2, LAYER_3 = 3 };
-
-#define MPA_SYNC_MASK ((unsigned int) 0xFFE00000)
-#define MPA_LAST_SYNC_BIT_MASK ((unsigned int) 0x00100000)
-#define MPA_VERSION_MASK ((unsigned int) 0x00080000)
-#define MPA_LAYER_MASK ((unsigned int) 0x3)
-#define MPA_LAYER_SHIFT 17
-#define MPA_BITRATE_MASK ((unsigned int) 0xF)
-#define MPA_BITRATE_SHIFT 12
-#define MPA_FREQ_MASK ((unsigned int) 0x3)
-#define MPA_FREQ_SHIFT 10
-#define MPA_CHMODE_MASK ((unsigned int) 0x3)
-#define MPA_CHMODE_SHIFT 6
-#define MPA_PADDING_SHIFT 9
-#define MPA_COPYRIGHT_SHIFT 3
-#define MPA_ORIGINAL_SHIFT 2
-
-static const unsigned int bitrate_table[16][6] = {
- {0, 0, 0, 0, 0, 0},
- {32, 32, 32, 32, 8, 8},
- {64, 48, 40, 48, 16, 16},
- {96, 56, 48, 56, 24, 24},
- {128, 64, 56, 64, 32, 32},
- {160, 80, 64, 80, 40, 40},
- {192, 96, 80, 96, 48, 48},
- {224, 112, 96, 112, 56, 56},
- {256, 128, 112, 128, 64, 64},
- {288, 160, 128, 144, 80, 80},
- {320, 192, 160, 160, 96, 96},
- {352, 224, 192, 176, 112, 112},
- {384, 256, 224, 192, 128, 128},
- {416, 320, 256, 224, 144, 144},
- {448, 384, 320, 256, 160, 160},
- {-1, -1, -1, -1, -1, -1}
-};
-static const int freq_table[4][3] = {
- {44100, 22050, 11025},
- {48000, 24000, 12000},
- {32000, 16000, 8000}
-};
-static const char * const channel_modes[4] = {
- gettext_noop("stereo"),
- gettext_noop("joint stereo"),
- gettext_noop("dual channel"),
- gettext_noop("mono")
-};
-static const char * const mpeg_versions[3] = {
- gettext_noop("MPEG-1"),
- gettext_noop("MPEG-2"),
- gettext_noop("MPEG-2.5")
-};
-static const char * const layer_names[3] = {
- gettext_noop("Layer I"),
- gettext_noop("Layer II"),
- gettext_noop("Layer III")
-};
-
-
-#define OK 0
-#define SYSERR 1
-#define INVALID_ID3 2
-
-static void
-trim (char *k)
-{
- while ((strlen (k) > 0) && (isspace (k[strlen (k) - 1])))
- k[strlen (k) - 1] = '\0';
-}
-
-static int
-get_id3 (const char *data, size_t size, id3tag * id3)
-{
- const char *pos;
-
- if (size < 128)
- return INVALID_ID3;
-
- pos = &data[size - 128];
- if (0 != strncmp ("TAG", pos, 3))
- return INVALID_ID3;
- pos += 3;
-
- id3->title = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
- trim (id3->title);
- pos += 30;
- id3->artist = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
- trim (id3->artist);
- pos += 30;
- id3->album = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
- trim (id3->album);
- pos += 30;
- id3->year = EXTRACTOR_common_convert_to_utf8 (pos, 4, "ISO-8859-1");
- trim (id3->year);
- pos += 4;
- id3->comment = EXTRACTOR_common_convert_to_utf8 (pos, 30, "ISO-8859-1");
- trim (id3->comment);
- if ( (pos[28] == '\0') &&
- (pos[29] != '\0') )
- {
- /* ID3v1.1 */
- id3->track_number = pos[29];
- }
- else
- {
- id3->track_number = 0;
- }
- pos += 30;
- id3->genre = "";
- if (pos[0] < GENRE_NAME_COUNT)
- id3->genre = dgettext (PACKAGE, genre_names[(unsigned) pos[0]]);
- return OK;
-}
-
-static struct EXTRACTOR_Keywords *
-addkword (EXTRACTOR_KeywordList * oldhead,
- const char *phrase, EXTRACTOR_KeywordType type)
-{
- EXTRACTOR_KeywordList *keyword;
-
- keyword = malloc (sizeof (EXTRACTOR_KeywordList));
- keyword->next = oldhead;
- keyword->keyword = strdup (phrase);
- keyword->keywordType = type;
- return keyword;
-}
-
-
-
-static struct EXTRACTOR_Keywords *
-mp3parse (const unsigned char *data, size_t size, struct EXTRACTOR_Keywords *prev)
-{
- unsigned int header;
- int counter = 0;
- char mpeg_ver = 0;
- char layer = 0;
- int idx_num = 0;
- int bitrate = 0; /*used for each frame */
- int avg_bps = 0; /*average bitrate */
- int vbr_flag = 0;
- int copyright_flag = 0;
- int original_flag = 0;
- int length = 0;
- int sample_rate = 0;
- int ch = 0;
- int frame_size;
- int frames = 0;
- size_t pos = 0;
- char *format;
-
- do
- {
- /* seek for frame start */
- if (pos + sizeof (header) > size)
- {
- return prev;
- } /*unable to find header */
- header = (data[pos] << 24) | (data[pos+1] << 16) |
- (data[pos+2] << 8) | data[pos+3];
- if ((header & MPA_SYNC_MASK) == MPA_SYNC_MASK)
- break; /*found header sync */
- pos++;
- counter++; /*next try */
- }
- while (counter < MAX_MP3_SCAN_DEEP);
- if (counter >= MAX_MP3_SCAN_DEEP)
- {
- return prev;
- }; /*give up to find mp3 header */
-
- prev = addkword (prev, "audio/mpeg", EXTRACTOR_MIMETYPE);
-
- do
- { /*ok, now we found a mp3 frame header */
- frames++;
- switch (header & (MPA_LAST_SYNC_BIT_MASK | MPA_VERSION_MASK))
- {
- case (MPA_LAST_SYNC_BIT_MASK | MPA_VERSION_MASK):
- mpeg_ver = MPEG_V1;
- break;
- case (MPA_LAST_SYNC_BIT_MASK):
- mpeg_ver = MPEG_V2;
- break;
- case 0:
- mpeg_ver = MPEG_V25;
- break;
- case (MPA_VERSION_MASK):
- default:
- mpeg_ver = MPEG_ERR; /*error */
- break;
- }
- switch (header & (MPA_LAYER_MASK << MPA_LAYER_SHIFT))
- {
- case (0x1 << MPA_LAYER_SHIFT):
- layer = LAYER_3;
- break;
- case (0x2 << MPA_LAYER_SHIFT):
- layer = LAYER_2;
- break;
- case (0x3 << MPA_LAYER_SHIFT):
- layer = LAYER_1;
- break;
- case 0x0:
- default:
- layer = LAYER_ERR; /*error */
- }
- if (!layer || !mpeg_ver)
- return prev; /*unknown mpeg type */
- if (mpeg_ver < MPEG_V25)
- idx_num = (mpeg_ver - 1) * 3 + layer - 1;
- else
- idx_num = 2 + layer;
- bitrate = 1000 * bitrate_table[(header >> MPA_BITRATE_SHIFT) &
- MPA_BITRATE_MASK][idx_num];
- if (bitrate < 0)
- {
- frames--;
- break;
- } /*error in header */
- sample_rate = freq_table[(header >> MPA_FREQ_SHIFT) &
- MPA_FREQ_MASK][mpeg_ver - 1];
- if (sample_rate < 0)
- {
- frames--;
- break;
- } /*error in header */
- ch = ((header >> MPA_CHMODE_SHIFT) & MPA_CHMODE_MASK);
- copyright_flag = (header >> MPA_COPYRIGHT_SHIFT) & 0x1;
- original_flag = (header >> MPA_ORIGINAL_SHIFT) & 0x1;
- frame_size =
- 144 * bitrate / (sample_rate ? sample_rate : 1) +
- ((header >> MPA_PADDING_SHIFT) & 0x1);
- avg_bps += bitrate / 1000;
-
- pos += frame_size - 4;
- if (frames > max_frames_scan)
- break; /*optimization */
- if (avg_bps / frames != bitrate / 1000)
- vbr_flag = 1;
- if (pos + sizeof (header) > size)
- break; /* EOF */
- header = (data[pos] << 24) | (data[pos+1] << 16) |
- (data[pos+2] << 8) | data[pos+3];
- }
- while ((header & MPA_SYNC_MASK) == MPA_SYNC_MASK);
-
- if (!frames)
- return prev; /*no valid frames */
- avg_bps = avg_bps / frames;
- if (max_frames_scan)
- { /*if not all frames scaned */
- length =
- size / (avg_bps ? avg_bps : bitrate ? bitrate : 0xFFFFFFFF) / 125;
- }
- else
- {
- length = 1152 * frames / (sample_rate ? sample_rate : 0xFFFFFFFF);
- }
-
- prev = addkword (prev, mpeg_versions[mpeg_ver-1], EXTRACTOR_RESOURCE_TYPE);
- format = malloc (512);
- snprintf (format, 512, "%s %s audio, %d kbps (%s), %d Hz, %s, %s, %s",
- mpeg_versions[mpeg_ver-1],
- layer_names[layer-1],
- avg_bps,
- vbr_flag ? _("VBR") : _("CBR"),
- sample_rate,
- channel_modes[ch],
- copyright_flag ? _("copyright") : _("no copyright"),
- original_flag ? _("original") : _("copy") );
- prev = addkword (prev, format, EXTRACTOR_FORMAT);
- snprintf (format, 512, "%dm%02d",
- length / 60, length % 60);
- prev = addkword (prev, format, EXTRACTOR_DURATION);
- free (format);
- return prev;
-}
-
-
-/* mimetype = audio/mpeg */
-struct EXTRACTOR_Keywords *
-libextractor_mp3_extract (const char *filename,
- const char *data,
- size_t size, struct EXTRACTOR_Keywords *klist)
-{
- id3tag info;
- char *word;
- char track[16];
-
- if (0 != get_id3 (data, size, &info))
- return klist;
-
- if (strlen (info.title) > 0)
- klist = addkword (klist, info.title, EXTRACTOR_TITLE);
- if (strlen (info.artist) > 0)
- klist = addkword (klist, info.artist, EXTRACTOR_ARTIST);
- if (strlen (info.album) > 0)
- klist = addkword (klist, info.album, EXTRACTOR_ALBUM);
- if (strlen (info.year) > 0)
- klist = addkword (klist, info.year, EXTRACTOR_YEAR);
- if (strlen (info.genre) > 0)
- klist = addkword (klist, info.genre, EXTRACTOR_GENRE);
- if (strlen (info.comment) > 0)
- klist = addkword (klist, info.comment, EXTRACTOR_COMMENT);
- if (info.track_number != 0)
- {
- snprintf(track, 15, "%u", info.track_number);
- klist = addkword (klist, track, EXTRACTOR_TRACK_NUMBER);
- }
-
- /* A keyword that has all of the information together) */
- word = malloc (strlen (info.artist) + strlen (info.title) +
- strlen (info.album) + 6);
- sprintf (word, "%s: %s (%s)", info.artist, info.title, info.album);
- klist = addkword (klist, word, EXTRACTOR_DESCRIPTION);
-
- free (word);
- free (info.title);
- free (info.year);
- free (info.album);
- free (info.artist);
- free (info.comment);
-
- return mp3parse ((unsigned char *) data, size, klist);
-}
-
-/* end of mp3extractor.c */
