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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 <avdec_private.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
struct bgav_ape_tag_s
{
uint32_t num_items;
struct
{
char * key;
char * str;
} * items;
};
int bgav_ape_tag_probe(bgav_input_context_t * input, int * tag_size)
{
uint32_t size, flags;
uint8_t probe_data[32];
uint8_t * ptr;
if(bgav_input_read_data(input, probe_data, 32) < 32)
return 0;
if(strncmp((char*)probe_data, "APETAGEX", 8))
return 0;
/* Now, compute the size */
ptr = &probe_data[12];
size = GAVL_PTR_2_32LE(ptr);
ptr = &probe_data[20];
flags = GAVL_PTR_2_32LE(ptr);
*tag_size = size;
if(flags & 0x80000000)
*tag_size += 32;
return 1;
}
bgav_ape_tag_t * bgav_ape_tag_read(bgav_input_context_t * input, int tag_size)
{
int i;
bgav_ape_tag_t *ret;
uint32_t flags, item_value_size;
uint8_t * buffer, *ptr;
ret = calloc(1, sizeof(*ret));
buffer = malloc(tag_size);
if(bgav_input_read_data(input, buffer, tag_size) < tag_size)
return NULL;
/* Go to start of footer */
ptr = buffer + (tag_size - 16);
ret->num_items = GAVL_PTR_2_32LE(ptr);ptr += 4;
ret->items = calloc(ret->num_items, sizeof(*ret->items));
flags = GAVL_PTR_2_32LE(ptr);
ptr = buffer;
if(flags & 0x80000000)
ptr += 32;
/* Goto start of the items */
for(i = 0; i < ret->num_items; i++)
{
item_value_size = GAVL_PTR_2_32LE(ptr); ptr+=4;
flags = GAVL_PTR_2_32LE(ptr); ptr+=4;
ret->items[i].key = gavl_strdup((char*)ptr);
ptr += strlen(ret->items[i].key) + 1;
if((flags & 0x00000006) == 0) /* UTF-8 Data */
{
ret->items[i].str = gavl_strndup((char*)ptr, (char*)(ptr + item_value_size));
ptr += item_value_size;
}
}
// bgav_ape_tag_dump(ret);
return ret;
}
void bgav_ape_tag_dump(bgav_ape_tag_t * tag)
{
int i;
bgav_dprintf("APE Tag %d items\n", tag->num_items);
for(i = 0; i < tag->num_items; i++)
{
bgav_dprintf(" Item %d\n", i+1);
bgav_dprintf(" Key: %s\n", tag->items[i].key);
if(tag->items[i].str)
bgav_dprintf(" String: %s\n", tag->items[i].str);
else
bgav_dprintf(" No usable value\n");
}
}
#define STRVAL(k, gavl_key) \
if(!strcasecmp(tag->items[i].key, k) && tag->items[i].str) \
gavl_dictionary_set_string(m, gavl_key, tag->items[i].str);
#define INTVAL(k, gavl_key) \
if(!strcasecmp(tag->items[i].key, k) && tag->items[i].str) \
gavl_dictionary_set_int(m, gavl_key, atoi(tag->items[i].str));
void bgav_ape_tag_2_metadata(bgav_ape_tag_t * tag, gavl_dictionary_t * m)
{
int i;
for(i = 0; i < tag->num_items; i++)
{
STRVAL("Genre", GAVL_META_GENRE);
STRVAL("Year", GAVL_META_YEAR);
STRVAL("Artist", GAVL_META_ARTIST);
STRVAL("Album", GAVL_META_ALBUM);
STRVAL("Title", GAVL_META_TITLE);
STRVAL("Comment", GAVL_META_COMMENT);
STRVAL("Composer", GAVL_META_AUTHOR);
STRVAL("Copyright", GAVL_META_COPYRIGHT);
INTVAL("Track", GAVL_META_TRACKNUMBER);
}
}
#undef STRVAL
#undef INTVAL
#define FREE(p) if(p) free(p);
void bgav_ape_tag_destroy(bgav_ape_tag_t * tag)
{
int i;
for(i = 0; i < tag->num_items; i++)
{
FREE(tag->items[i].key);
FREE(tag->items[i].str);
}
FREE(tag->items);
free(tag);
}
#undef FREE
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