2 #include "EbmlBufferWriter.h"
3 #include "EbmlWriter.h"
6 //#include <malloc.h> //_alloca
11 void Ebml_Write(EbmlGlobal *glob, const void *buffer_in, unsigned long len)
13 unsigned char *src = glob->buf;
15 memcpy(src, buffer_in, len);
19 static void _Serialize(EbmlGlobal *glob, const unsigned char *p, const unsigned char *q)
25 unsigned long cbWritten;
26 memcpy(&(glob->buf[glob->offset]), q, 1);
31 void Ebml_Serialize(EbmlGlobal *glob, const void *buffer_in, unsigned long len)
35 const unsigned char *const p = (const unsigned char *)(buffer_in);
36 const unsigned char *const q = p + len;
38 _Serialize(glob, p, q);
42 void Ebml_StartSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc, unsigned long class_id)
44 Ebml_WriteID(glob, class_id);
45 ebmlLoc->offset = glob->offset;
46 //todo this is always taking 8 bytes, this may need later optimization
47 unsigned long long unknownLen = 0x01FFFFFFFFFFFFFFLLU;
48 Ebml_Serialize(glob, (void *)&unknownLen, 8); //this is a key that says lenght unknown
51 void Ebml_EndSubElement(EbmlGlobal *glob, EbmlLoc *ebmlLoc)
53 unsigned long long size = glob->offset - ebmlLoc->offset - 8;
54 unsigned long long curOffset = glob->offset;
55 glob->offset = ebmlLoc->offset;
56 size |= 0x0100000000000000LLU;
57 Ebml_Serialize(glob, &size, 8);
58 glob->offset = curOffset;