diff options
Diffstat (limited to 'remoting/host/differ_block.h')
| -rw-r--r-- | remoting/host/differ_block.h | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/remoting/host/differ_block.h b/remoting/host/differ_block.h index 7b319b9..8ca538f 100644 --- a/remoting/host/differ_block.h +++ b/remoting/host/differ_block.h @@ -9,12 +9,14 @@ namespace remoting { -// Low level functions to return the difference between 2 blocks of pixels. -// The amount of difference is returned as an int. +// Block size and format (BGRA 32 bit) are fixed. +static const int kBlockWidth = 32; +static const int kBlockHeight = 32; +static const int kBytesPerPixel = 4; + +// Low level functions to compare 2 blocks of pixels. // zero means the blocks are identical. -// larger values indicate larger changes. -// Pixel format of the captured screen may be platform specific, but constant. -// Size of block is constant. +// one means the blocks are different. int BlockDifference(const uint8* image1, const uint8* image2, int stride); |