fly316/PX4-Autopilot
7
0
Fork 0
mirror of https://gitee.com/mirrors_PX4/PX4-Autopilot.git synced 2026-10-20 06:43:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

Separated bit array copy algorithms - aligned to unaligned and vice versa.

Browse Source
This commit is contained in:
Pavel Kirienko
2015-01-11 03:46:25 +03:00
parent c1fac577f3
commit 21c07b90a5
2 changed files with 20 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libuavcan/include/uavcan/marshal/bit_stream.hpp
+18 -4
View File
@@ -12,7 +12,14 @@
namespace uavcan
{
/**
* This function implements fast copy of unaligned bit arrays. It isn't part of the library API, so it is not exported.
* @param src_org Source array
* @param src_offset Bit offset of the first source byte
* @param src_len Number of bits to copy
* @param dst_org Destination array
* @param dst_offset Bit offset of the first destination byte
*/
void bitarrayCopy(const unsigned char* src_org, unsigned src_offset, unsigned src_len,
unsigned char* dst_org, unsigned dst_offset);
@@ -30,11 +37,18 @@ class UAVCAN_EXPORT BitStream
static inline unsigned bitlenToBytelen(unsigned bits) { return (bits + 7) / 8; }
static inline void copyBitArray(const uint8_t* src_org, unsigned src_offset, unsigned src_len,
uint8_t* dst_org, unsigned dst_offset)
static inline void copyBitArrayAlignedToUnaligned(const uint8_t* src_org, unsigned src_len,
uint8_t* dst_org, unsigned dst_offset)
{
bitarrayCopy(reinterpret_cast<const unsigned char*>(src_org), 0, src_len,
reinterpret_cast<unsigned char*>(dst_org), dst_offset);
}
static inline void copyBitArrayUnalignedToAligned(const uint8_t* src_org, unsigned src_offset, unsigned src_len,
uint8_t* dst_org)
{
bitarrayCopy(reinterpret_cast<const unsigned char*>(src_org), src_offset, src_len,
reinterpret_cast<unsigned char*>(dst_org), dst_offset);
reinterpret_cast<unsigned char*>(dst_org), 0);
}
public: