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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2012 Members of the Gmerlin project
* gmerlin-general@lists.sourceforge.net
* http://gmerlin.sourceforge.net
*
* 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, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <string.h>
#include <stdlib.h>
#include <avdec_private.h>
#include <vorbis_comment.h>
#include <stdio.h>
/*
* Parsing code written straightforward after
* http://www.xiph.org/ogg/vorbis/doc/v-comment.html
*/
void bgav_vorbis_comment_dump(bgav_vorbis_comment_t * ret)
{
int i;
bgav_dprintf( "Vorbis comment:\n");
bgav_dprintf( " Vendor string: %s\n", ret->vendor);
for(i = 0; i < ret->num_user_comments; i++)
{
bgav_dprintf( " %s\n", ret->user_comments[i]);
}
}
int bgav_vorbis_comment_read(bgav_vorbis_comment_t * ret,
bgav_input_context_t * input)
{
int i;
uint32_t len;
uint32_t num;
// [vendor_length] = read an unsigned integer of 32 bits
if(!bgav_input_read_32_le(input, &len))
return 0;
// [vendor_string] = read a UTF-8 vector as [vendor_length] octets
ret->vendor = malloc(len+1);
if(bgav_input_read_data(input, (uint8_t*)(ret->vendor), len) < len)
return 0;
ret->vendor[len] = '\0';
// [user_comment_list_length] = read an unsigned integer of 32 bits
if(!bgav_input_read_32_le(input, &num))
return 0;
ret->num_user_comments = num;
ret->user_comments = calloc(ret->num_user_comments,
sizeof(*(ret->user_comments)));
// iterate [user_comment_list_length] times
for(i = 0; i < ret->num_user_comments; i++)
{
// [length] = read an unsigned integer of 32 bits
if(!bgav_input_read_32_le(input, &len))
return 0;
ret->user_comments[i] = malloc(len + 1);
if(bgav_input_read_data(input, (uint8_t*)(ret->user_comments[i]), len) < len)
return 0;
ret->user_comments[i][len] = '\0';
}
return 1;
}
static char const * const artist_key = "ARTIST";
static char const * const author_key = "AUTHOR";
static char const * const album_key = "ALBUM";
static char const * const title_key = "TITLE";
// static char const * const _version_key = "VERSION=";
static char const * const track_number_key = "TRACKNUMBER";
// static char const * const _organization_key = "ORGANIZATION=";
static char const * const genre_key = "GENRE";
// static char const * const _description_key = "DESCRIPTION=";
static char const * const date_key = "DATE";
// static char const * const _location_key = "LOCATION=";
static char const * const copyright_key = "COPYRIGHT";
static char const * const albumartist1_key = "ALBUM ARTIST";
static char const * const albumartist2_key = "ALBUMARTIST";
const char *
bgav_vorbis_comment_get_field(bgav_vorbis_comment_t * vc, const char * key, int idx)
{
int i, j;
int key_len = strlen(key);
j = 0;
for(i = 0; i < vc->num_user_comments; i++)
{
if(!strncasecmp(vc->user_comments[i], key, key_len) &&
vc->user_comments[i][key_len] == '=')
{
if(idx == j)
return vc->user_comments[i] + key_len + 1;
else
j++;
}
}
return NULL;
}
void bgav_vorbis_comment_2_metadata(bgav_vorbis_comment_t * comment,
bgav_metadata_t * m)
{
const char * field;
int j;
j = 0;
while((field = bgav_vorbis_comment_get_field(comment, artist_key, j)))
{
gavl_dictionary_append_string_array(m, GAVL_META_ARTIST, field);
j++;
}
j = 0;
while((field = bgav_vorbis_comment_get_field(comment, author_key, j)))
{
gavl_dictionary_append_string_array(m, GAVL_META_AUTHOR, field);
j++;
}
if((field = bgav_vorbis_comment_get_field(comment, album_key, 0)))
gavl_dictionary_set_string(m, GAVL_META_ALBUM, field);
if((field = bgav_vorbis_comment_get_field(comment, title_key, 0)))
gavl_dictionary_set_string(m, GAVL_META_TITLE, field);
j = 0;
while((field = bgav_vorbis_comment_get_field(comment, genre_key, j)))
{
gavl_dictionary_append_string_array(m, GAVL_META_GENRE, field);
j++;
}
if((field = bgav_vorbis_comment_get_field(comment, date_key, 0)))
{
if(strlen(field) == 4)
gavl_dictionary_set_string(m, GAVL_META_YEAR, field);
else
gavl_dictionary_set_string(m, GAVL_META_DATE, field);
}
if((field = bgav_vorbis_comment_get_field(comment, copyright_key, 0)))
gavl_dictionary_set_string(m, GAVL_META_COPYRIGHT, field);
if((field = bgav_vorbis_comment_get_field(comment, albumartist1_key, 0)))
{
gavl_dictionary_append_string_array(m, GAVL_META_ALBUMARTIST, field);
j = 1;
while((field = bgav_vorbis_comment_get_field(comment, albumartist1_key, j)))
{
gavl_dictionary_append_string_array(m, GAVL_META_ALBUMARTIST, field);
j++;
}
}
else if((field = bgav_vorbis_comment_get_field(comment, albumartist2_key, 0)))
{
gavl_dictionary_append_string_array(m, GAVL_META_ALBUMARTIST, field);
j = 1;
while((field = bgav_vorbis_comment_get_field(comment, albumartist2_key, j)))
{
gavl_dictionary_append_string_array(m, GAVL_META_ALBUMARTIST, field);
j++;
}
}
if((field = bgav_vorbis_comment_get_field(comment, track_number_key, 0)))
gavl_dictionary_set_int(m, GAVL_META_TRACKNUMBER, atoi(field));
for(j = 0; j < comment->num_user_comments; j++)
{
if(!strchr(comment->user_comments[j], '='))
{
gavl_dictionary_set_string(m, GAVL_META_COMMENT, comment->user_comments[j]);
break;
}
}
}
#define MY_FREE(ptr) if(ptr) free(ptr);
void bgav_vorbis_comment_free(bgav_vorbis_comment_t * ret)
{
int i;
MY_FREE(ret->vendor);
for(i = 0; i < ret->num_user_comments; i++)
{
MY_FREE(ret->user_comments[i]);
}
MY_FREE(ret->user_comments);
}
void bgav_vorbis_set_channel_setup(gavl_audio_format_t * format)
{
switch(format->num_channels)
{
case 1:
format->channel_locations[0] = GAVL_CHID_FRONT_CENTER;
break;
case 2:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_RIGHT;
break;
case 3:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_CENTER;
format->channel_locations[2] = GAVL_CHID_FRONT_RIGHT;
break;
case 4:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_RIGHT;
format->channel_locations[2] = GAVL_CHID_REAR_LEFT;
format->channel_locations[3] = GAVL_CHID_REAR_RIGHT;
break;
case 5:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_CENTER;
format->channel_locations[2] = GAVL_CHID_FRONT_RIGHT;
format->channel_locations[3] = GAVL_CHID_REAR_LEFT;
format->channel_locations[4] = GAVL_CHID_REAR_RIGHT;
break;
case 6:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_CENTER;
format->channel_locations[2] = GAVL_CHID_FRONT_RIGHT;
format->channel_locations[3] = GAVL_CHID_REAR_LEFT;
format->channel_locations[4] = GAVL_CHID_REAR_RIGHT;
format->channel_locations[5] = GAVL_CHID_LFE;
break;
case 7:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_CENTER;
format->channel_locations[2] = GAVL_CHID_FRONT_RIGHT;
format->channel_locations[3] = GAVL_CHID_SIDE_LEFT;
format->channel_locations[4] = GAVL_CHID_SIDE_RIGHT;
format->channel_locations[5] = GAVL_CHID_REAR_CENTER;
format->channel_locations[6] = GAVL_CHID_LFE;
break;
case 8:
format->channel_locations[0] = GAVL_CHID_FRONT_LEFT;
format->channel_locations[1] = GAVL_CHID_FRONT_CENTER;
format->channel_locations[2] = GAVL_CHID_FRONT_RIGHT;
format->channel_locations[3] = GAVL_CHID_SIDE_LEFT;
format->channel_locations[4] = GAVL_CHID_SIDE_RIGHT;
format->channel_locations[5] = GAVL_CHID_REAR_LEFT;
format->channel_locations[6] = GAVL_CHID_REAR_RIGHT;
format->channel_locations[7] = GAVL_CHID_LFE;
break;
}
}
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