/*****************************************************************************
* 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
}
static int CdTextParse( vlc_meta_t ***ppp_tracks, int *pi_tracks,
const uint8_t *p_buffer, int i_buffer )
{
char *pppsz_info[128][0x10];
int i_track_last = -1;
if( i_buffer < 4 )
return -1;
memset( pppsz_info, 0, sizeof(pppsz_info) );
for( int i = 0; i < (i_buffer-4)/18; i++ )
{
const uint8_t *p_block = &p_buffer[4 + 18*i];
char psz_text[12+1];
const int i_pack_type = p_block[0];
if( i_pack_type < 0x80 || i_pack_type > 0x8f )
continue;
const int i_track_number = (p_block[1] >> 0)&0x7f;
const int i_extension_flag = ( p_block[1] >> 7)& 0x01;
if( i_extension_flag )
continue;
//const int i_sequence_number = p_block[2];
//const int i_charater_position = (p_block[3] >> 0) &0x0f;
//const int i_block_number = (p_block[3] >> 4) &0x07;
/* TODO unicode support
* I need a sample */
//const int i_unicode = ( p_block[3] >> 7)&0x01;
//const int i_crc = (p_block[4+12] << 8) | (p_block[4+13] << 0);
/* */
memcpy( psz_text, &p_block[4], 12 );
psz_text[12] = '\0';
/* */
int i_track = i_track_number;
char *psz_track = &psz_text[0];
while( i_track <= 127 && psz_track < &psz_text[12] )
{
//fprintf( stderr, "t=%d psz_track=%p end=%p", i_track, (void *)psz_track, (void *)&psz_text[12] );
if( *psz_track )
{
astrcat( &pppsz_info[i_track][i_pack_type-0x80], psz_track );
i_track_last = __MAX( i_track_last, i_track );
}
i_track++;
psz_track += 1 + strlen(psz_track);
}
}
if( i_track_last < 0 )
return -1;
vlc_meta_t **pp_tracks = calloc( i_track_last+1, sizeof(*pp_tracks) );
if( !pp_tracks )
goto exit;
for( int j = 0; j < 0x10; j++ )
{
for( int i = 0; i <= i_track_last; i++ )
{
/* */
if( pppsz_info[i][j] )
EnsureUTF8( pppsz_info[i][j] );
/* */
const char *psz_default = pppsz_info[0][j];
const char *psz_value = pppsz_info[i][j];
if( !psz_value && !psz_default )
continue;
vlc_meta_t *p_track = pp_tracks[i];
if( !p_track )
{
p_track = pp_tracks[i] = vlc_meta_New();
if( !p_track )
continue;
}
switch( j )
{
case 0x00: /* Album/Title */
if( i == 0 )
{
vlc_meta_SetAlbum( p_track, psz_value );
}
else
{
if( psz_value )
vlc_meta_SetTitle( p_track, psz_value );
if( psz_default )
vlc_meta_SetAlbum( p_track, psz_default );
}
break;
case 0x01: /* Performer */
vlc_meta_SetArtist( p_track,
psz_value ? psz_value : psz_default );
break;
case 0x05: /* Messages */
vlc_meta_SetDescription( p_track,
psz_value ? psz_value : psz_default );
break;
case 0x07: /* Genre */
vlc_meta_SetGenre( p_track,
psz_value ? psz_value : psz_default );
break;
/* FIXME unsupported:
* 0x02: songwriter
* 0x03: composer
* 0x04: arrenger
* 0x06: disc id */
}
}
}
/* */
exit:
for( int j = 0; j < 0x10; j++ )
for( int i = 0; i <= i_track_last; i++ )
free( pppsz_info[i][j] );
*ppp_tracks = pp_tracks;
*pi_tracks = i_track_last+1;
return pp_tracks ? 0 : -1;
}
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--;
}
}
