video/fbdev/c2p_planar.c

2  *  Fast C2P (Chunky-to-Planar) Conversion
4  *  Copyright (C) 2003-2008 Geert Uytterhoeven
21      *  Perform a full C2P step on 32 8-bit pixels, stored in 8 32-bit words
23      *    - 32 8-bit chunky pixels on input
24      *    - permutated planar data (1 plane per 32-bit word) on output
45      *  Store a full block of planar data after c2p conversion
74      *  c2p_planar - Copy 8-bit chunky image data to a planar frame buffer
75      *  @dst: Starting address of the planar frame buffer
80      *  @dst_nextline: Frame buffer offset to the next line (in bytes)
81      *  @dst_nextplane: Frame buffer offset to the next plane (in bytes)
83      *  @bpp: Bits per pixel of the planar frame buffer (1-8)
102 	while (height--) {  in c2p_planar()
121 				w = 32 - dst_idx;  in c2p_planar()
129 				w = width-w;  in c2p_planar()
138 				w -= 32;  in c2p_planar()
144 				memset(d.pixels+w, 0, 32-w);  in c2p_planar()
156 MODULE_DESCRIPTION("Fast C2P (Chunky-to-Planar) Conversion");