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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef VIDEO_PIXEL_FORMAT_H#define VIDEO_PIXEL_FORMAT_H
struct pixel_format { unsigned char bits_per_pixel; bool indexed; union { struct { struct { unsigned char offset; unsigned char length; } alpha, red, green, blue; }; struct { unsigned char offset; unsigned char length; } index; };};
#define PIXEL_FORMAT_C8 \ { 8, true, { .index = {0, 8}, } }
#define PIXEL_FORMAT_XRGB1555 \ { 16, false, { .alpha = {0, 0}, .red = {10, 5}, .green = {5, 5}, .blue = {0, 5} } }
#define PIXEL_FORMAT_RGB565 \ { 16, false, { .alpha = {0, 0}, .red = {11, 5}, .green = {5, 6}, .blue = {0, 5} } }
#define PIXEL_FORMAT_RGB888 \ { 24, false, { .alpha = {0, 0}, .red = {16, 8}, .green = {8, 8}, .blue = {0, 8} } }
#define PIXEL_FORMAT_XRGB8888 \ { 32, false, { .alpha = {0, 0}, .red = {16, 8}, .green = {8, 8}, .blue = {0, 8} } }
#define PIXEL_FORMAT_XBGR8888 \ { 32, false, { .alpha = {0, 0}, .red = {0, 8}, .green = {8, 8}, .blue = {16, 8} } }
#define PIXEL_FORMAT_XRGB2101010 \ { 32, false, { .alpha = {0, 0}, .red = {20, 10}, .green = {10, 10}, .blue = {0, 10} } }
#define __pixel_format_cmp_field(lhs, rhs, name) \ { \ int ret = ((lhs)->name) - ((rhs)->name); \ if (ret) \ return ret; \ }
#define __pixel_format_cmp_bitfield(lhs, rhs, name) \ { \ __pixel_format_cmp_field(lhs, rhs, name.offset); \ __pixel_format_cmp_field(lhs, rhs, name.length); \ }
/** * pixel_format_cmp - Compares two pixel-format descriptions * * @lhs: a pixel-format description * @rhs: a pixel-format description * * Compares two pixel-format descriptions for their order. The semantics * are equivalent to memcmp(). * * Returns: * 0 if both arguments describe the same pixel format, less-than-zero if lhs < rhs, * or greater-than-zero if lhs > rhs. */static inline int pixel_format_cmp(const struct pixel_format *lhs, const struct pixel_format *rhs){ __pixel_format_cmp_field(lhs, rhs, bits_per_pixel); __pixel_format_cmp_field(lhs, rhs, indexed);
if (lhs->indexed) { __pixel_format_cmp_bitfield(lhs, rhs, index); } else { __pixel_format_cmp_bitfield(lhs, rhs, alpha); __pixel_format_cmp_bitfield(lhs, rhs, red); __pixel_format_cmp_bitfield(lhs, rhs, green); __pixel_format_cmp_bitfield(lhs, rhs, blue); }
return 0;}
/** * pixel_format_equal - Compares two pixel-format descriptions for equality * * @lhs: a pixel-format description * @rhs: a pixel-format description * * Returns: * True if both arguments describe the same pixel format, or false otherwise. */static inline bool pixel_format_equal(const struct pixel_format *lhs, const struct pixel_format *rhs){ return !pixel_format_cmp(lhs, rhs);}
#endif