static long write_metadata_block_packets(FILE *out, const int serial, const char *vendor, const size_t num_tags, char **tags, size_t padding, ogg_packet **metadata)
{
const size_t header_length = vc_size(vendor, num_tags, tags);
if (header_length > (2<<24))
return OGGEDIT_ALLOCATION_FAILURE;
char magic[4];
magic[0] = VCTYPE;
magic[1] = header_length >> 16 & 0xFF;
magic[2] = header_length >> 8 & 0xFF;
magic[3] = header_length & 0xFF;
ogg_packet_clear(metadata[0]);
if (!fill_vc_packet(magic, 4, vendor, num_tags, tags, false, padding, metadata[0]))
return OGGEDIT_ALLOCATION_FAILURE;
ogg_stream_state os;
if (ogg_stream_init(&os, serial))
return OGGEDIT_FAILED_TO_INIT_STREAM;
os.b_o_s = 1;
os.pageno = 1;
for (int i = 0; metadata[i]; i++) {
if (!metadata[i+1])
metadata[i]->packet[0] |= LASTBLOCK;
ogg_stream_packetin(&os, metadata[i]);
}
return flush_stream(out, &os);
}
static int64_t write_opus_tags(FILE *out, const int64_t serial, const char *vendor, const uint32_t num_tags, char **tags, const size_t padding)
{
ogg_packet op;
if (!fill_vc_packet(TAGMAGIC, strlen(TAGMAGIC), vendor, num_tags, tags, false, padding, &op))
return OGGEDIT_ALLOCATION_FAILURE;
ogg_stream_state os;
if (ogg_stream_init(&os, (int)serial))
return OGGEDIT_FAILED_TO_INIT_STREAM;
os.b_o_s = 1;
os.pageno = 1;
ogg_stream_packetin(&os, &op);
ogg_packet_clear(&op);
return flush_stream(out, &os);
}