+++ /dev/null
-/*****************************************************************************
- * id3tag.c: id3/ape tag parser/skipper based on libid3tag
- *****************************************************************************
- * Copyright (C) 2002-2004 the VideoLAN team
- * $Id$
- *
- * Authors: Sigmund Augdal Helberg <dnumgis@videolan.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.
- *****************************************************************************/
-
-/*****************************************************************************
- * Preamble
- *****************************************************************************/
-#include <config.h>
-
-
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
-
-#include <vlc_common.h>
-#include <vlc_plugin.h>
-#include <vlc_interface.h>
-#include <vlc_demux.h>
-#include <vlc_charset.h>
-
-#include <sys/types.h>
-
-#include <vlc_meta.h>
-
-#include <id3tag.h>
-#include "id3genres.h"
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int ParseTags ( vlc_object_t * );
-
-/*****************************************************************************
- * Module descriptor
- *****************************************************************************/
-vlc_module_begin ()
- set_description( N_("ID3v1/2 and APEv1/2 tags parser" ) )
- set_capability( "meta reader", 70 )
- set_callbacks( ParseTags, NULL )
-vlc_module_end ()
-
-/*****************************************************************************
- * ParseID3Tag : parse an id3tag into the info structures
- *****************************************************************************/
-static void ParseID3Tag( demux_meta_t *p_demux_meta, const uint8_t *p_data, int i_size )
-{
- struct id3_tag *p_id3_tag;
- struct id3_frame *p_frame;
- vlc_meta_t *p_meta;
- int i;
-
- p_id3_tag = id3_tag_parse( p_data, i_size );
- if( !p_id3_tag )
- return;
-
- if( !p_demux_meta->p_meta )
- p_demux_meta->p_meta = vlc_meta_New();
- p_meta = p_demux_meta->p_meta;
-
-#define ID_IS( a ) (!strcmp( p_frame->id, a ))
-#define DESCR_IS( a) strstr( (char*)p_frame->description, a )
-#define GET_STRING(frame,fidx) id3_ucs4_latin1duplicate( id3_field_getstring( &(frame)->fields[fidx] ) )
-
- /* */
- for( i = 0; (p_frame = id3_tag_findframe( p_id3_tag, "UFID", i )) != NULL; i++ )
- {
- const char *psz_owner = id3_field_getlatin1( &p_frame->fields[0] );
-
- if( !strncmp( psz_owner, "http://musicbrainz.org", 22 ) )
- {
- id3_byte_t const * p_ufid;
- id3_length_t i_ufidlen;
-
- p_ufid = id3_field_getbinarydata( &p_frame->fields[1], &i_ufidlen );
- char *psz_ufid = strndup( p_ufid, i_ufidlen );
-
- vlc_meta_SetTrackID( p_meta, psz_ufid );
- free( psz_ufid );
- }
- }
-
- /* User defined text (TXXX) */
- for( i = 0; (p_frame = id3_tag_findframe( p_id3_tag, "TXXX", i )) != NULL; i++ )
- {
- /* 3 fields: 'encoding', 'description', 'value' */
- char *psz_name = GET_STRING( p_frame, 1 );
- char *psz_value = GET_STRING( p_frame, 2 );
-
- vlc_meta_AddExtra( p_meta, psz_name, psz_value );
-#if 0
- if( !strncmp( psz_name, "MusicBrainz Artist Id", 21 ) )
- vlc_meta_SetArtistID( p_meta, psz_value );
- if( !strncmp( psz_desc, "MusicBrainz Album Id", 20 ) )
- vlc_meta_SetAlbumID( p_meta, psz_value );
-#endif
- free( psz_name );
- free( psz_value );
- }
-
- /* Relative volume adjustment */
- for( i = 0; (p_frame = id3_tag_findframe( p_id3_tag, "RVA2", i )) != NULL; i++ )
- {
- /* 2 fields: 'latin1', 'binary' */
- const char *psz_type = id3_field_getlatin1( &p_frame->fields[0] );
- if( !strcasecmp( psz_type, "track" ) || !strcasecmp( psz_type, "album" ) ||
- !strcasecmp( psz_type, "normalize" ) )
- {
- id3_byte_t const * p_data;
- id3_length_t i_data;
-
- p_data = id3_field_getbinarydata( &p_frame->fields[1], &i_data );
- while( i_data >= 4 )
- {
- const unsigned int i_peak_size = p_data[3];
- const float f_temp = GetWBE( &p_data[1] );
- const float f_gain = f_temp / 512.0;
- char psz_value[32];
-
- if( i_data < i_peak_size + 4 )
- break;
- /* only master volume */
- if( p_data[0] == 0x01 )
- {
- snprintf( psz_value, sizeof(psz_value), "%f", f_gain );
- if( !strcasecmp( psz_type, "album" ) )
- vlc_meta_AddExtra( p_meta, "REPLAYGAIN_ALBUM_GAIN", psz_value );
- else
- vlc_meta_AddExtra( p_meta, "REPLAYGAIN_TRACK_GAIN", psz_value );
- /* XXX I have no idea what peak unit is ... */
- }
- i_data -= 4+i_peak_size;
- }
- }
- }
-
- /* TODO 'RGAD' if it is used somewhere */
-
- /* T--- Text informations */
- for( i = 0; (p_frame = id3_tag_findframe( p_id3_tag, "T", i )) != NULL; i++ )
- {
- unsigned i_strings;
-
- /* Special case TXXX is not the same beast */
- if( ID_IS( "TXXX" ) )
- continue;
-
- i_strings = id3_field_getnstrings( &p_frame->fields[1] );
- while( i_strings > 0 )
- {
- char *psz_temp = id3_ucs4_utf8duplicate(
- id3_field_getstrings( &p_frame->fields[1], --i_strings ) );
-
- if( ID_IS( ID3_FRAME_GENRE ) )
- {
- char *psz_endptr;
- int i_genre = strtol( psz_temp, &psz_endptr, 10 );
-
- if( psz_temp != psz_endptr &&
- i_genre >= 0 && i_genre < NUM_GENRES )
- {
- vlc_meta_SetGenre( p_meta, ppsz_genres[atoi(psz_temp)]);
- }
- else
- {
- /* Unknown genre */
- vlc_meta_SetGenre( p_meta,psz_temp );
- }
- }
- else if( ID_IS( ID3_FRAME_TITLE ) )
- {
- vlc_meta_SetTitle( p_meta, psz_temp );
- }
- else if( ID_IS( ID3_FRAME_ARTIST ) )
- {
- vlc_meta_SetArtist( p_meta, psz_temp );
- }
- else if( ID_IS( ID3_FRAME_YEAR ) )
- {
- vlc_meta_SetDate( p_meta, psz_temp );
- }
- else if( ID_IS( ID3_FRAME_COMMENT ) )
- {
- vlc_meta_SetDescription( p_meta, psz_temp );
- }
- else if( DESCR_IS( "Copyright" ) )
- {
- vlc_meta_SetCopyright( p_meta, psz_temp );
- }
- else if( DESCR_IS( "Publisher" ) )
- {
- vlc_meta_SetPublisher( p_meta, psz_temp );
- }
- else if( DESCR_IS( "Track number/position in set" ) )
- {
- vlc_meta_SetTrackNum( p_meta, psz_temp );
- }
- else if( DESCR_IS( "Album/movie/show title" ) )
- {
- vlc_meta_SetAlbum( p_meta, psz_temp );
- }
- else if( DESCR_IS( "Encoded by" ) )
- {
- vlc_meta_SetEncodedBy( p_meta, psz_temp );
- }
- else if( ID_IS ( "APIC" ) )
- {
- msg_Dbg( p_demux_meta, "** Has APIC **" );
- }
- else if( p_frame->description )
- {
- /* Unhandled meta */
- vlc_meta_AddExtra( p_meta, (char*)p_frame->description, psz_temp );
- }
- free( psz_temp );
- }
- }
- id3_tag_delete( p_id3_tag );
-#undef GET_STRING
-#undef DESCR_IS
-#undef ID_IS
-}
-/*****************************************************************************
- * APEv1/2
- *****************************************************************************/
-#define APE_TAG_HEADERSIZE (32)
-static size_t GetAPEvXSize( const uint8_t *p_data, int i_data )
-{
- uint32_t flags;
- size_t i_body;
-
- if( i_data < APE_TAG_HEADERSIZE ||
- ( GetDWLE( &p_data[8] ) != 1000 && GetDWLE( &p_data[8] ) != 2000 ) || /* v1/v2 only */
- strncmp( (char*)p_data, "APETAGEX", 8 ) ||
- GetDWLE( &p_data[8+4+4] ) <= 0 )
- return 0;
-
- i_body = GetDWLE( &p_data[8+4] );
- flags = GetDWLE( &p_data[8+4+4] );
-
- /* is it the header */
- if( flags & (1<<29) )
- return i_body + ( (flags&(1<<30)) ? APE_TAG_HEADERSIZE : 0 );
-
- /* it is the footer */
- return i_body + ( (flags&(1<<31)) ? APE_TAG_HEADERSIZE : 0 );
-}
-static void ParseAPEvXTag( demux_meta_t *p_demux_meta, const uint8_t *p_data, int i_data )
-{
- vlc_meta_t *p_meta;
- bool b_start;
- bool b_end;
- const uint8_t *p_header = NULL;
- int i_entry;
-
- if( i_data < APE_TAG_HEADERSIZE )
- return;
-
- b_start = !strncmp( (char*)&p_data[0], "APETAGEX", 8 );
- b_end = !strncmp( (char*)&p_data[i_data-APE_TAG_HEADERSIZE], "APETAGEX", 8 );
- if( !b_end && !b_start )
- return;
-
- if( !p_demux_meta->p_meta )
- p_demux_meta->p_meta = vlc_meta_New();
- p_meta = p_demux_meta->p_meta;
-
- if( b_start )
- {
- p_header = &p_data[0];
- p_data += APE_TAG_HEADERSIZE;
- i_data -= APE_TAG_HEADERSIZE;
- }
- if( b_end )
- {
- p_header = &p_data[i_data-APE_TAG_HEADERSIZE];
- i_data -= APE_TAG_HEADERSIZE;
- }
- if( i_data <= 0 )
- return;
-
- i_entry = GetDWLE( &p_header[8+4+4] );
- if( i_entry <= 0 )
- return;
-
- while( i_entry > 0 && i_data >= 10 )
- {
- const int i_size = GetDWLE( &p_data[0] );
- const uint32_t flags = GetDWLE( &p_data[4] );
- char psz_name[256];
- int n;
-
- strlcpy( psz_name, (char*)&p_data[8], sizeof(psz_name) );
- n = strlen( psz_name );
- if( n <= 0 )
- break;
-
- p_data += 8+n+1;
- i_data -= 8+n+1;
- if( i_data < i_size )
- break;
-
- /* Retreive UTF-8 fields only */
- if( ((flags>>1) & 0x03) == 0x00 )
- {
- /* FIXME list are separated by '\0' */
- char *psz_value = strndup( (char*)&p_data[0], i_size );
-
- EnsureUTF8( psz_name );
- EnsureUTF8( psz_value );
-#define IS(s) (!strcasecmp( psz_name, s ) )
- if( IS( "Title" ) )
- vlc_meta_SetTitle( p_meta, psz_value );
- else if( IS( "Artist" ) )
- vlc_meta_SetArtist( p_meta, psz_value );
- else if( IS( "Album" ) )
- vlc_meta_SetAlbum( p_meta, psz_value );
- else if( IS( "Publisher" ) )
- vlc_meta_SetPublisher( p_meta, psz_value );
- else if( IS( "Track" ) )
- {
- char *p = strchr( psz_value, '/' );
- if( p )
- *p++ = '\0';
- vlc_meta_SetTrackNum( p_meta, psz_value );
- }
- else if( IS( "Comment" ) )
- vlc_meta_SetDescription( p_meta, psz_value );
- else if( IS( "Copyright" ) )
- vlc_meta_SetCopyright( p_meta, psz_value );
- else if( IS( "Year" ) )
- vlc_meta_SetDate( p_meta, psz_value );
- else if( IS( "Genre" ) )
- vlc_meta_SetGenre( p_meta, psz_value );
- else if( IS( "Language" ) )
- vlc_meta_SetLanguage( p_meta, psz_value );
- else
- vlc_meta_AddExtra( p_meta, psz_name, psz_value );
-#undef IS
- free( psz_value );
- }
-
- p_data += i_size;
- i_data -= i_size;
- i_entry--;
- }
-}
-
-/*****************************************************************************
- * CheckFooter: check for ID3/APE at the end of the file
- * CheckHeader: check for ID3/APE at the begining of the file
- *****************************************************************************/
-static void CheckFooter( demux_meta_t *p_demux_meta )
-{
- demux_t *p_demux = (demux_t *)p_demux_meta->p_demux;
- const int64_t i_pos = stream_Size( p_demux->s );
- const size_t i_peek = 128+APE_TAG_HEADERSIZE;
- const uint8_t *p_peek;
- const uint8_t *p_peek_id3;
- int64_t i_id3v2_pos = -1;
- int64_t i_apevx_pos = -1;
- int i_id3v2_size;
- int i_apevx_size;
- size_t i_id3v1_size;
-
- if( i_pos < i_peek )
- return;
- if( stream_Seek( p_demux->s, i_pos - i_peek ) )
- return;
-
- if( stream_Peek( p_demux->s, &p_peek, i_peek ) < i_peek )
- return;
- p_peek_id3 = &p_peek[APE_TAG_HEADERSIZE];
-
- /* Check/Parse ID3v1 */
- i_id3v1_size = id3_tag_query( p_peek_id3, ID3_TAG_QUERYSIZE );
- if( i_id3v1_size == 128 )
- {
- msg_Dbg( p_demux, "found ID3v1 tag" );
- ParseID3Tag( p_demux_meta, p_peek_id3, i_id3v1_size );
- }
-
- /* Compute ID3v2 position */
- i_id3v2_size = -id3_tag_query( &p_peek_id3[128-ID3_TAG_QUERYSIZE], ID3_TAG_QUERYSIZE );
- if( i_id3v2_size > 0 )
- i_id3v2_pos = i_pos - i_id3v2_size;
-
- /* Compute APE2v2 position */
- i_apevx_size = GetAPEvXSize( &p_peek[128+0], APE_TAG_HEADERSIZE );
- if( i_apevx_size > 0 )
- {
- i_apevx_pos = i_pos - i_apevx_size;
- }
- else if( i_id3v1_size > 0 )
- {
- /* it can be before ID3v1 */
- i_apevx_size = GetAPEvXSize( p_peek, APE_TAG_HEADERSIZE );
- if( i_apevx_size > 0 )
- i_apevx_pos = i_pos - 128 - i_apevx_size;
- }
-
- if( i_id3v2_pos > 0 && i_apevx_pos > 0 )
- {
- msg_Warn( p_demux,
- "Both ID3v2 and APEv1/2 at the end of file, ignoring APEv1/2" );
- i_apevx_pos = -1;
- }
-
- /* Parse ID3v2.4 */
- if( i_id3v2_pos > 0 )
- {
- if( !stream_Seek( p_demux->s, i_id3v2_pos ) &&
- stream_Peek( p_demux->s, &p_peek, i_id3v2_size ) == i_id3v2_size )
- {
- msg_Dbg( p_demux, "found ID3v2 tag at end of file" );
- ParseID3Tag( p_demux_meta, p_peek, i_id3v2_size );
- }
- }
-
- /* Parse APEv1/2 */
- if( i_apevx_pos > 0 )
- {
- if( !stream_Seek( p_demux->s, i_apevx_pos ) &&
- stream_Peek( p_demux->s, &p_peek, i_apevx_size ) == i_apevx_size )
- {
- msg_Dbg( p_demux, "found APEvx tag at end of file" );
- ParseAPEvXTag( p_demux_meta, p_peek, i_apevx_size );
- }
- }
-}
-static void CheckHeader( demux_meta_t *p_demux_meta )
-{
- const uint8_t *p_peek;
- int i_size;
-
- demux_t *p_demux = (demux_t *)p_demux_meta->p_demux;
-
- if( stream_Seek( p_demux->s, 0 ) )
- return;
-
- /* Test ID3v2 first */
- if( stream_Peek( p_demux->s, &p_peek, ID3_TAG_QUERYSIZE ) != ID3_TAG_QUERYSIZE )
- return;
- i_size = id3_tag_query( p_peek, ID3_TAG_QUERYSIZE );
- if( i_size > 0 &&
- stream_Peek( p_demux->s, &p_peek, i_size ) == i_size )
- {
- msg_Dbg( p_demux, "found ID3v2 tag" );
- ParseID3Tag( p_demux_meta, p_peek, i_size );
- return;
- }
-
- /* Test APEv1 */
- if( stream_Peek( p_demux->s, &p_peek, APE_TAG_HEADERSIZE ) != APE_TAG_HEADERSIZE )
- return;
- i_size = GetAPEvXSize( p_peek, APE_TAG_HEADERSIZE );
- if( i_size > 0 &&
- stream_Peek( p_demux->s, &p_peek, i_size ) == i_size )
- {
- msg_Dbg( p_demux, "found APEv1/2 tag" );
- ParseAPEvXTag( p_demux_meta, p_peek, i_size );
- }
-}
-
-/*****************************************************************************
- * ParseTags: check if ID3/APE tags at common locations.
- ****************************************************************************/
-static int ParseTags( vlc_object_t *p_this )
-{
- demux_meta_t *p_demux_meta = (demux_meta_t *)p_this;
- demux_t *p_demux = (demux_t *)p_demux_meta->p_demux;
- bool b_seekable;
- int64_t i_init;
-
- msg_Dbg( p_demux_meta, "checking for ID3v1/2 and APEv1/2 tags" );
- stream_Control( p_demux->s, STREAM_CAN_FASTSEEK, &b_seekable );
- if( !b_seekable )
- return VLC_EGENERIC;
-
- i_init = stream_Tell( p_demux->s );
-
- TAB_INIT( p_demux_meta->i_attachments, p_demux_meta->attachments );
- p_demux_meta->p_meta = NULL;
-
- /* */
- CheckFooter( p_demux_meta );
-
- /* */
- CheckHeader( p_demux_meta );
-
- /* Restore position
- * Demuxer will not see tags at the start as src/input/demux.c skips it
- * for them
- */
- stream_Seek( p_demux->s, i_init );
- if( !p_demux_meta->p_meta && p_demux_meta->i_attachments <= 0 )
- return VLC_EGENERIC;
- return VLC_SUCCESS;
-}
-
projects / vlc / blobdiff