//------------------------------------------------------------------
void Ebml_StartSubElement(EbmlGlobal *global, off_t *ebmlLoc, unsigned int class_id)
{
const uint64_t kEbmlUnknownLength = LITERALU64(0x01FFFFFF, 0xFFFFFFFF);
Ebml_WriteID(global, class_id);
*ebmlLoc = ftello(global->stream);
Ebml_Serialize(global, &kEbmlUnknownLength, sizeof(kEbmlUnknownLength), 8);
}
static void Ebml_EndSubElement(struct EbmlGlobal *glob, EbmlLoc *ebmlLoc) {
off_t pos;
uint64_t size;
/* Save the current stream pointer. */
pos = ftello(glob->stream);
/* Calculate the size of this element. */
size = pos - *ebmlLoc - 8;
size |= LITERALU64(0x01000000, 0x00000000);
/* Seek back to the beginning of the element and write the new size. */
fseeko(glob->stream, *ebmlLoc, SEEK_SET);
Ebml_Serialize(glob, &size, sizeof(size), 8);
/* Reset the stream pointer. */
fseeko(glob->stream, pos, SEEK_SET);
}
