Module: wine Branch: master Commit: e1524883c10b63d05a82624eca7fb775c69e3cd3 URL: http://source.winehq.org/git/wine.git/?a=commit;h=e1524883c10b63d05a82624eca...
Author: Konrad Rzepecki hannibal@astral.lodz.pl Date: Sun Mar 20 11:59:46 2011 +0100
wined3d: Implement WINED3DFMT_YUY2 to WINED3DFMT_B5G6R5_UNORM conversion function.
---
dlls/wined3d/surface_base.c | 44 +++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 44 insertions(+), 0 deletions(-)
diff --git a/dlls/wined3d/surface_base.c b/dlls/wined3d/surface_base.c index 74fa196..4239f69 100644 --- a/dlls/wined3d/surface_base.c +++ b/dlls/wined3d/surface_base.c @@ -782,6 +782,49 @@ static void convert_yuy2_x8r8g8b8(const BYTE *src, BYTE *dst, } }
+static void convert_yuy2_r5g6b5(const BYTE *src, BYTE *dst, + DWORD pitch_in, DWORD pitch_out, unsigned int w, unsigned int h) +{ + unsigned int x, y; + int c2, d, e, r2 = 0, g2 = 0, b2 = 0; + + TRACE("Converting %ux%u pixels, pitches %u %u\n", w, h, pitch_in, pitch_out); + + for (y = 0; y < h; ++y) + { + const BYTE *src_line = src + y * pitch_in; + WORD *dst_line = (WORD *)(dst + y * pitch_out); + for (x = 0; x < w; ++x) + { + /* YUV to RGB conversion formulas from http://en.wikipedia.org/wiki/YUV: + * C = Y - 16; D = U - 128; E = V - 128; + * R = cliptobyte((298 * C + 409 * E + 128) >> 8); + * G = cliptobyte((298 * C - 100 * D - 208 * E + 128) >> 8); + * B = cliptobyte((298 * C + 516 * D + 128) >> 8); + * Two adjacent YUY2 pixels are stored as four bytes: Y0 U Y1 V . + * U and V are shared between the pixels. + */ + if (!(x & 1)) /* for every even pixel, read new U and V */ + { + d = (int) src_line[1] - 128; + e = (int) src_line[3] - 128; + r2 = 409 * e + 128; + g2 = - 100 * d - 208 * e + 128; + b2 = 516 * d + 128; + } + c2 = 298 * ((int) src_line[0] - 16); + dst_line[x] = (cliptobyte((c2 + r2) >> 8) >> 3) << 11 /* red */ + | (cliptobyte((c2 + g2) >> 8) >> 2) << 5 /* green */ + | (cliptobyte((c2 + b2) >> 8) >> 3); /* blue */ + /* Scale RGB values to 0..255 range, + * then clip them if still not in range (may be negative), + * then shift them within DWORD if necessary. + */ + src_line += 2; + } + } +} + struct d3dfmt_convertor_desc { enum wined3d_format_id from, to; @@ -794,6 +837,7 @@ static const struct d3dfmt_convertor_desc convertors[] = {WINED3DFMT_B5G6R5_UNORM, WINED3DFMT_B8G8R8X8_UNORM, convert_r5g6b5_x8r8g8b8}, {WINED3DFMT_B8G8R8A8_UNORM, WINED3DFMT_B8G8R8X8_UNORM, convert_a8r8g8b8_x8r8g8b8}, {WINED3DFMT_YUY2, WINED3DFMT_B8G8R8X8_UNORM, convert_yuy2_x8r8g8b8}, + {WINED3DFMT_YUY2, WINED3DFMT_B5G6R5_UNORM, convert_yuy2_r5g6b5}, };
static inline const struct d3dfmt_convertor_desc *find_convertor(enum wined3d_format_id from, enum wined3d_format_id to)