int flac_write( const char* filename, const char *predicate, const char* uri )
{
if (strcmp(predicate, LL_LICENSE) != 0) {
return -LL_E_MODULE_WRITE_FAIL; /* We only know License */
}
int ret = 1;
FLAC__Metadata_SimpleIterator *iter = FLAC__metadata_simple_iterator_new();
if (FLAC__metadata_simple_iterator_init(iter,filename,false,false) && FLAC__metadata_simple_iterator_is_writable(iter)) {
FLAC__bool found_vc = false;
do {
if (FLAC__metadata_simple_iterator_get_block_type(iter) == FLAC__METADATA_TYPE_VORBIS_COMMENT) {
FLAC__StreamMetadata *vc;
found_vc = true;
vc = FLAC__metadata_simple_iterator_get_block(iter);
if (uri) {
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "LICENSE", uri);
FLAC__metadata_object_vorbiscomment_replace_comment(vc,entry,true,false);
} else {
int i = FLAC__metadata_object_vorbiscomment_find_entry_from(vc,0,"LICENSE");
if (i != -1) {
FLAC__metadata_object_vorbiscomment_delete_comment(vc,i);
}
}
ret = FLAC__metadata_simple_iterator_set_block(iter, vc, true);
FLAC__metadata_object_delete(vc);
break;
}
} while (FLAC__metadata_simple_iterator_next(iter));
if (!found_vc && uri) {
FLAC__StreamMetadata *vc = FLAC__metadata_object_new(FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__StreamMetadata_VorbisComment_Entry entry;
FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, "LICENSE", uri);
FLAC__metadata_object_vorbiscomment_append_comment(vc,entry,false);
ret = FLAC__metadata_simple_iterator_insert_block_after(iter,vc,true);
FLAC__metadata_object_delete(vc);
}
} else {
ret = 0;
}
FLAC__metadata_simple_iterator_delete(iter);
return ret;
}
FLAC__bool flac__utils_set_channel_mask_tag(FLAC__StreamMetadata *object, FLAC__uint32 channel_mask)
{
FLAC__StreamMetadata_VorbisComment_Entry entry = { 0, 0 };
char tag[128];
FLAC__ASSERT(object);
FLAC__ASSERT(object->type == FLAC__METADATA_TYPE_VORBIS_COMMENT);
FLAC__ASSERT(strlen(CHANNEL_MASK_TAG+1+2+16+1) <= sizeof(tag)); /* +1 for =, +2 for 0x, +16 for digits, +1 for NUL */
entry.entry = (FLAC__byte*)tag;
#if defined _MSC_VER || defined __MINGW32__
if((entry.length = _snprintf(tag, sizeof(tag), "%s=0x%04X", CHANNEL_MASK_TAG, (unsigned)channel_mask)) >= sizeof(tag))
#else
if((entry.length = snprintf(tag, sizeof(tag), "%s=0x%04X", CHANNEL_MASK_TAG, (unsigned)channel_mask)) >= sizeof(tag))
#endif
return false;
if(!FLAC__metadata_object_vorbiscomment_replace_comment(object, entry, /*all=*/true, /*copy=*/true))
return false;
return true;
}
// ========================================
// Vorbis comment utilities
// ========================================
static bool
SetVorbisComment(FLAC__StreamMetadata *block, const char *key, CFStringRef value)
{
assert(NULL != block);
assert(NULL != key);
// Remove the existing comment with this name
if(-1 == FLAC__metadata_object_vorbiscomment_remove_entry_matching(block, key)) {
log4cxx::LoggerPtr logger = log4cxx::Logger::getLogger("org.sbooth.AudioEngine.AudioMetadata.FLAC");
LOG4CXX_WARN(logger, "FLAC__metadata_object_vorbiscomment_remove_entry_matching() failed");
return false;
}
// Nothing left to do if value is NULL
if(NULL == value)
return true;
CFIndex valueCStringSize = CFStringGetMaximumSizeForEncoding(CFStringGetLength(value), kCFStringEncodingUTF8) + 1;
char valueCString [valueCStringSize];
if(!CFStringGetCString(value, valueCString, valueCStringSize, kCFStringEncodingUTF8)) {
log4cxx::LoggerPtr logger = log4cxx::Logger::getLogger("org.sbooth.AudioEngine.AudioMetadata.FLAC");
LOG4CXX_WARN(logger, "CFStringGetCString() failed");
return false;
}
FLAC__StreamMetadata_VorbisComment_Entry entry;
if(!FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair(&entry, key, valueCString)) {
log4cxx::LoggerPtr logger = log4cxx::Logger::getLogger("org.sbooth.AudioEngine.AudioMetadata.FLAC");
LOG4CXX_WARN(logger, "FLAC__metadata_object_vorbiscomment_entry_from_name_value_pair() failed");
return false;
}
if(!FLAC__metadata_object_vorbiscomment_replace_comment(block, entry, false, false)) {
log4cxx::LoggerPtr logger = log4cxx::Logger::getLogger("org.sbooth.AudioEngine.AudioMetadata.FLAC");
LOG4CXX_WARN(logger, "FLAC__metadata_object_vorbiscomment_replace_comment() failed");
return false;
}
return true;
}
