From b1f5cee7d9a1f509ef8990f3b8405c74e83a20cc Mon Sep 17 00:00:00 2001 From: 20kdc Date: Mon, 18 Feb 2019 21:19:33 +0000 Subject: webm/theora/yuv2rgb: Fix YUV conversion issues and add BGRP WEBM handling. (Now clang-format friendly.) This should fix the various issues with colours in Ogg Theora and WEBM playback. (A reference project is attached to PR #26051, which this commit should be part of.) This version of the commit, rather than moving x->RGBA handling into libsimplewebm, uses a colourspace field added to libsimplewebm by a PR there. Thus, the commit that precedes this should be the synchronization & cleanup commit for that. Also, this version is now clang-format friendly. I hope. --- thirdparty/misc/yuv2rgb.h | 121 +++++++++++++++------------------------------- 1 file changed, 39 insertions(+), 82 deletions(-) (limited to 'thirdparty/misc') diff --git a/thirdparty/misc/yuv2rgb.h b/thirdparty/misc/yuv2rgb.h index 3ec8388246..d8f7fd6de2 100644 --- a/thirdparty/misc/yuv2rgb.h +++ b/thirdparty/misc/yuv2rgb.h @@ -24,6 +24,14 @@ does not infringe any patents that apply in your area before you ship it. */ +/* + * Please note that this version has been modified for various reasons: + * 1. Using the Godot core typedefs + * 2. At some point or another the code relied on the byte order of a uint32_t, this has been fixed + * 3. Output has been reordered to struct { uint8_t r, g, b, a; } precisely in accordance with the function names + * 4. Removing unused 'dither' parameter + */ + #ifndef YUV2RGB_H #define YUV2RGB_H @@ -803,6 +811,8 @@ static const uint32_t tables[256*3] = { 0xE6365800U }; +/* -- Common -- */ + #define FLAGS 0x40080100 #define READUV(U,V) (tables[256 + (U)] + tables[512 + (V)]) #define READY(Y) tables[Y] @@ -820,12 +830,14 @@ do { \ #define STORE(Y,DSTPTR) \ do { \ - *(DSTPTR)++ = (Y); \ - *(DSTPTR)++ = (Y)>>22; \ *(DSTPTR)++ = (Y)>>11; \ - *(DSTPTR)++ = 255; \ + *(DSTPTR)++ = (Y)>>22; \ + *(DSTPTR)++ = (Y); \ + *(DSTPTR)++ = 255; \ } while (0 == 1) +/* -- End Common -- */ + static void yuv422_2_rgb8888(uint8_t *dst_ptr, const uint8_t *y_ptr, const uint8_t *u_ptr, @@ -834,8 +846,7 @@ static void yuv422_2_rgb8888(uint8_t *dst_ptr, int32_t height, int32_t y_span, int32_t uv_span, - int32_t dst_span, - int32_t dither) + int32_t dst_span) { height -= 1; while (height > 0) @@ -909,35 +920,7 @@ static void yuv422_2_rgb8888(uint8_t *dst_ptr, } } - -#undef FLAGS -#undef READUV -#undef READY -#undef FIXUP -#undef STORE - - -#define FLAGS 0x40080100 -#define READUV(U,V) (tables[256 + (U)] + tables[512 + (V)]) -#define READY(Y) tables[Y] -#define FIXUP(Y) \ -do { \ - int tmp = (Y) & FLAGS; \ - if (tmp != 0) \ - { \ - tmp -= tmp>>8; \ - (Y) |= tmp; \ - tmp = FLAGS & ~(Y>>1); \ - (Y) += tmp>>8; \ - } \ -} while (0 == 1) - -#define STORE(Y,DSTPTR) \ -do { \ - (DSTPTR) = 0xFF000000 | (Y & 0xFF) | (0xFF00 & (Y>>14)) | (0xFF0000 & (Y<<5));\ -} while (0 == 1) - -static void yuv420_2_rgb8888(uint8_t *dst_ptr_, +static void yuv420_2_rgb8888(uint8_t *dst_ptr, const uint8_t *y_ptr, const uint8_t *u_ptr, const uint8_t *v_ptr, @@ -945,12 +928,9 @@ static void yuv420_2_rgb8888(uint8_t *dst_ptr_, int32_t height, int32_t y_span, int32_t uv_span, - int32_t dst_span, - int32_t dither) + int32_t dst_span) { - uint32_t *dst_ptr = (uint32_t *)(void *)dst_ptr_; - dst_span >>= 2; - + /* The 'dst_ptr as uint32_t' thing is not endianness-aware, so that's been removed. */ height -= 1; while (height > 0) { @@ -960,36 +940,38 @@ static void yuv420_2_rgb8888(uint8_t *dst_ptr_, { /* Do 2 column pairs */ uint32_t uv, y0, y1; + uint8_t * dst_ptr_1span = dst_ptr + dst_span; uv = READUV(*u_ptr++,*v_ptr++); y1 = uv + READY(y_ptr[y_span]); y0 = uv + READY(*y_ptr++); FIXUP(y1); FIXUP(y0); - STORE(y1, dst_ptr[dst_span]); - STORE(y0, *dst_ptr++); + STORE(y1, dst_ptr_1span); + STORE(y0, dst_ptr); y1 = uv + READY(y_ptr[y_span]); y0 = uv + READY(*y_ptr++); FIXUP(y1); FIXUP(y0); - STORE(y1, dst_ptr[dst_span]); - STORE(y0, *dst_ptr++); + STORE(y1, dst_ptr_1span); + STORE(y0, dst_ptr); height += (2<<16); } if ((height>>16) == 0) { /* Trailing column pair */ uint32_t uv, y0, y1; + uint8_t * dst_ptr_1span = dst_ptr + dst_span; uv = READUV(*u_ptr,*v_ptr); y1 = uv + READY(y_ptr[y_span]); y0 = uv + READY(*y_ptr++); FIXUP(y1); FIXUP(y0); - STORE(y0, dst_ptr[dst_span]); - STORE(y1, *dst_ptr++); + STORE(y0, dst_ptr_1span); + STORE(y1, dst_ptr); } - dst_ptr += dst_span*2-width; + dst_ptr += (dst_span * 2) - (width * 4); y_ptr += y_span*2-width; u_ptr += uv_span-(width>>1); v_ptr += uv_span-(width>>1); @@ -1011,8 +993,8 @@ static void yuv420_2_rgb8888(uint8_t *dst_ptr_, y0 = uv + READY(*y_ptr++); FIXUP(y1); FIXUP(y0); - STORE(y1, *dst_ptr++); - STORE(y0, *dst_ptr++); + STORE(y1, dst_ptr); + STORE(y0, dst_ptr); height += (2<<16); } if ((height>>16) == 0) @@ -1023,42 +1005,11 @@ static void yuv420_2_rgb8888(uint8_t *dst_ptr_, uv = READUV(*u_ptr++,*v_ptr++); y0 = uv + READY(*y_ptr++); FIXUP(y0); - STORE(y0, *dst_ptr++); + STORE(y0, dst_ptr); } } } - - -#undef FLAGS -#undef READUV -#undef READY -#undef FIXUP -#undef STORE - -#define FLAGS 0x40080100 -#define READUV(U,V) (tables[256 + (U)] + tables[512 + (V)]) -#define READY(Y) tables[Y] -#define FIXUP(Y) \ -do { \ - int tmp = (Y) & FLAGS; \ - if (tmp != 0) \ - { \ - tmp -= tmp>>8; \ - (Y) |= tmp; \ - tmp = FLAGS & ~(Y>>1); \ - (Y) += tmp>>8; \ - } \ -} while (0 == 1) - -#define STORE(Y,DSTPTR) \ -do { \ - *(DSTPTR)++ = (Y); \ - *(DSTPTR)++ = (Y)>>22; \ - *(DSTPTR)++ = (Y)>>11; \ - *(DSTPTR)++ = 255; \ -} while (0 == 1) - static void yuv444_2_rgb8888(uint8_t *dst_ptr, const uint8_t *y_ptr, const uint8_t *u_ptr, @@ -1067,8 +1018,7 @@ static void yuv444_2_rgb8888(uint8_t *dst_ptr, int32_t height, int32_t y_span, int32_t uv_span, - int32_t dst_span, - int32_t dither) + int32_t dst_span) { height -= 1; while (height > 0) @@ -1143,4 +1093,11 @@ static void yuv444_2_rgb8888(uint8_t *dst_ptr, height -= 1; } } + +#undef FLAGS +#undef READUV +#undef READY +#undef FIXUP +#undef STORE + #endif // YUV2RGB_H -- cgit v1.2.3