static u32 read_nal_size_hdr(u8 *ptr, u32 nalh_size)
{
	u32 nal_size=0;
	u32 v = nalh_size;
	while (v) {
		nal_size |= (u8) *ptr;
		ptr++;
		v-=1;
		if (v) nal_size <<= 8;
	}
	return nal_size;
}
static u32 read_nal_size_hdr(u8 *ptr, u32 nalh_size)
{
	u32 nal_size=0;
	u32 v = nalh_size;
	while (v) {
		nal_size |= (u8) *ptr;
		ptr++;
		v-=1;
		if (v) nal_size <<= 8;
	}
	return nal_size;
}