diff options
Diffstat (limited to 'drivers/video/c2p.c')
| -rw-r--r-- | drivers/video/c2p.c | 238 |
1 files changed, 120 insertions, 118 deletions
diff --git a/drivers/video/c2p.c b/drivers/video/c2p.c index 376bc07ff95..f102b578ce1 100644 --- a/drivers/video/c2p.c +++ b/drivers/video/c2p.c @@ -21,71 +21,71 @@ * Basic transpose step */ -#define _transp(d, i1, i2, shift, mask) \ - do { \ - u32 t = (d[i1] ^ (d[i2] >> shift)) & mask; \ - d[i1] ^= t; \ - d[i2] ^= t << shift; \ - } while (0) +#define _transp(d, i1, i2, shift, mask) \ + do { \ + u32 t = (d[i1] ^ (d[i2] >> shift)) & mask; \ + d[i1] ^= t; \ + d[i2] ^= t << shift; \ + } while (0) static inline u32 get_mask(int n) { - switch (n) { + switch (n) { case 1: - return 0x55555555; - break; + return 0x55555555; + break; case 2: - return 0x33333333; - break; + return 0x33333333; + break; case 4: - return 0x0f0f0f0f; - break; + return 0x0f0f0f0f; + break; case 8: - return 0x00ff00ff; - break; + return 0x00ff00ff; + break; case 16: - return 0x0000ffff; - break; - } - return 0; + return 0x0000ffff; + break; + } + return 0; } -#define transp_nx1(d, n) \ - do { \ - u32 mask = get_mask(n); \ - /* First block */ \ - _transp(d, 0, 1, n, mask); \ - /* Second block */ \ - _transp(d, 2, 3, n, mask); \ - /* Third block */ \ - _transp(d, 4, 5, n, mask); \ - /* Fourth block */ \ - _transp(d, 6, 7, n, mask); \ - } while (0) - -#define transp_nx2(d, n) \ - do { \ - u32 mask = get_mask(n); \ - /* First block */ \ - _transp(d, 0, 2, n, mask); \ - _transp(d, 1, 3, n, mask); \ - /* Second block */ \ - _transp(d, 4, 6, n, mask); \ - _transp(d, 5, 7, n, mask); \ - } while (0) - -#define transp_nx4(d, n) \ - do { \ - u32 mask = get_mask(n); \ - _transp(d, 0, 4, n, mask); \ - _transp(d, 1, 5, n, mask); \ - _transp(d, 2, 6, n, mask); \ - _transp(d, 3, 7, n, mask); \ - } while (0) +#define transp_nx1(d, n) \ + do { \ + u32 mask = get_mask(n); \ + /* First block */ \ + _transp(d, 0, 1, n, mask); \ + /* Second block */ \ + _transp(d, 2, 3, n, mask); \ + /* Third block */ \ + _transp(d, 4, 5, n, mask); \ + /* Fourth block */ \ + _transp(d, 6, 7, n, mask); \ + } while (0) + +#define transp_nx2(d, n) \ + do { \ + u32 mask = get_mask(n); \ + /* First block */ \ + _transp(d, 0, 2, n, mask); \ + _transp(d, 1, 3, n, mask); \ + /* Second block */ \ + _transp(d, 4, 6, n, mask); \ + _transp(d, 5, 7, n, mask); \ + } while (0) + +#define transp_nx4(d, n) \ + do { \ + u32 mask = get_mask(n); \ + _transp(d, 0, 4, n, mask); \ + _transp(d, 1, 5, n, mask); \ + _transp(d, 2, 6, n, mask); \ + _transp(d, 3, 7, n, mask); \ + } while (0) #define transp(d, n, m) transp_nx ## m(d, n) @@ -99,11 +99,11 @@ static inline u32 get_mask(int n) static void c2p_8bpp(u32 d[8]) { - transp(d, 16, 4); - transp(d, 8, 2); - transp(d, 4, 1); - transp(d, 2, 4); - transp(d, 1, 2); + transp(d, 16, 4); + transp(d, 8, 2); + transp(d, 4, 1); + transp(d, 2, 4); + transp(d, 1, 2); } @@ -132,10 +132,10 @@ static inline unsigned long comp(unsigned long a, unsigned long b, static inline void store_planar(char *dst, u32 dst_inc, u32 bpp, u32 d[8]) { - int i; + int i; - for (i = 0; i < bpp; i++, dst += dst_inc) - *(u32 *)dst = d[perm_c2p_8bpp[i]]; + for (i = 0; i < bpp; i++, dst += dst_inc) + *(u32 *)dst = d[perm_c2p_8bpp[i]]; } @@ -146,10 +146,10 @@ static inline void store_planar(char *dst, u32 dst_inc, u32 bpp, u32 d[8]) static inline void store_planar_masked(char *dst, u32 dst_inc, u32 bpp, u32 d[8], u32 mask) { - int i; + int i; - for (i = 0; i < bpp; i++, dst += dst_inc) - *(u32 *)dst = comp(d[perm_c2p_8bpp[i]], *(u32 *)dst, mask); + for (i = 0; i < bpp; i++, dst += dst_inc) + *(u32 *)dst = comp(d[perm_c2p_8bpp[i]], *(u32 *)dst, mask); } @@ -169,63 +169,65 @@ static inline void store_planar_masked(char *dst, u32 dst_inc, u32 bpp, void c2p(u8 *dst, const u8 *src, u32 dx, u32 dy, u32 width, u32 height, u32 dst_nextline, u32 dst_nextplane, u32 src_nextline, u32 bpp) { - int dst_idx; - u32 d[8], first, last, w; - const u8 *c; - u8 *p; - - dst += dy*dst_nextline+(dx & ~31); - dst_idx = dx % 32; - first = ~0UL >> dst_idx; - last = ~(~0UL >> ((dst_idx+width) % 32)); - while (height--) { - c = src; - p = dst; - w = width; - if (dst_idx+width <= 32) { - /* Single destination word */ - first &= last; - memset(d, 0, sizeof(d)); - memcpy((u8 *)d+dst_idx, c, width); - c += width; - c2p_8bpp(d); - store_planar_masked(p, dst_nextplane, bpp, d, first); - p += 4; - } else { - /* Multiple destination words */ - w = width; - /* Leading bits */ - if (dst_idx) { - w = 32 - dst_idx; - memset(d, 0, dst_idx); - memcpy((u8 *)d+dst_idx, c, w); - c += w; - c2p_8bpp(d); - store_planar_masked(p, dst_nextplane, bpp, d, first); - p += 4; - w = width-w; - } - /* Main chunk */ - while (w >= 32) { - memcpy(d, c, 32); - c += 32; - c2p_8bpp(d); - store_planar(p, dst_nextplane, bpp, d); - p += 4; - w -= 32; - } - /* Trailing bits */ - w %= 32; - if (w > 0) { - memcpy(d, c, w); - memset((u8 *)d+w, 0, 32-w); - c2p_8bpp(d); - store_planar_masked(p, dst_nextplane, bpp, d, last); - } + int dst_idx; + u32 d[8], first, last, w; + const u8 *c; + u8 *p; + + dst += dy*dst_nextline+(dx & ~31); + dst_idx = dx % 32; + first = ~0UL >> dst_idx; + last = ~(~0UL >> ((dst_idx+width) % 32)); + while (height--) { + c = src; + p = dst; + w = width; + if (dst_idx+width <= 32) { + /* Single destination word */ + first &= last; + memset(d, 0, sizeof(d)); + memcpy((u8 *)d+dst_idx, c, width); + c += width; + c2p_8bpp(d); + store_planar_masked(p, dst_nextplane, bpp, d, first); + p += 4; + } else { + /* Multiple destination words */ + w = width; + /* Leading bits */ + if (dst_idx) { + w = 32 - dst_idx; + memset(d, 0, dst_idx); + memcpy((u8 *)d+dst_idx, c, w); + c += w; + c2p_8bpp(d); + store_planar_masked(p, dst_nextplane, bpp, d, + first); + p += 4; + w = width-w; + } + /* Main chunk */ + while (w >= 32) { + memcpy(d, c, 32); + c += 32; + c2p_8bpp(d); + store_planar(p, dst_nextplane, bpp, d); + p += 4; + w -= 32; + } + /* Trailing bits */ + w %= 32; + if (w > 0) { + memcpy(d, c, w); + memset((u8 *)d+w, 0, 32-w); + c2p_8bpp(d); + store_planar_masked(p, dst_nextplane, bpp, d, + last); + } + } + src += src_nextline; + dst += dst_nextline; } - src += src_nextline; - dst += dst_nextline; - } } EXPORT_SYMBOL_GPL(c2p); |