int H264DECCheckMemSegmentation(void *mem, size_t size);
int H264DECMemoryRequirement(int unk1, int unk2, int unk3, int unk4, int unk5);
int H264DECInitParam(int size, void *mem);
int H264DECSetParam(void *mem, int unk1, void *unk2);
int H264DECOpen(void *mem);
int H264DECBegin(void *mem);
int H264DECExecute(void *mem, void *unk1);
int H264DECFlush(void *mem);
int H264DECEnd(void *mem);
int H264DECClose(void *mem);
int H264DECFindDecstartpoint(char *buf, int size, int *offset);
int H264DECFindIdrpoint(char *buf, int size, int *offset);
int H264DECCheckDecunitLength(void *mem, char *buf, int size, int offset, int *unk);
int H264DECGetImageSize(char *buf, int size, int offset, int *width, int *height);
int H264DECSetBitstream(void *mem, char* stream, int size, uint64_t unk);
int H264DECCheckSkipableFrame(char *buf, int size, int *result);