-static int32_t tag_add_field(struct mp4_metadata *meta, const char *item,
- const char *value, int32_t len)
-{
- meta->tags = para_realloc(meta->tags,
- (meta->count + 1) * sizeof(struct mp4_tag));
- meta->tags[meta->count].item = para_strdup(item);
- meta->tags[meta->count].len = len;
- if (len >= 0) {
- meta->tags[meta->count].value = para_malloc(len + 1);
- memcpy(meta->tags[meta->count].value, value, len);
- meta->tags[meta->count].value[len] = 0;
- } else {
- meta->tags[meta->count].value = para_strdup(value);
- }
- meta->count++;
- return 1;
-}
-
-static int read_string(struct mp4 *f, uint32_t length, char **result)
-{
- char *str = para_malloc(length + 1);
- int ret = read_data(f, str, length);
-
- if (ret <= 0) {
- free(str);
- *result = NULL;
- } else {
- str[length] = '\0';
- *result = str;
- }
- return ret;
-}
-