Update source to SDL2 2.0.12

Edward Rudd

2020-05-02 03f8528315fa46c95991a34f3325d7b33ae5538c

 source/src/video/SDL_yuv.c

@@ -1,6 +1,6 @@
/*
  Simple DirectMedia Layer
  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>

  This software is provided 'as-is', without any express or implied
  warranty.  In no event will the authors be held liable for any damages
@@ -55,6 +55,8 @@
    }
    return mode;
}

#if SDL_HAVE_YUV

static int GetYUVConversionType(int width, int height, YCbCrType *yuv_type)
{
@@ -1221,6 +1223,7 @@
    return SDL_SetError("SDL_ConvertPixels_Planar2x2_to_Planar2x2: Unsupported YUV conversion: %s -> %s", SDL_GetPixelFormatName(src_format), SDL_GetPixelFormatName(dst_format));
}

#ifdef __SSE2__
#define PACKED4_TO_PACKED4_ROW_SSE2(shuffle)                                                        \
    while (x >= 4) {                                                                                \
        __m128i yuv = _mm_loadu_si128((__m128i*)srcYUV);                                            \
@@ -1236,6 +1239,8 @@
        dstYUV += 16;                                                                               \
        x -= 4;                                                                                     \
    }                                                                                               \

#endif

static int
SDL_ConvertPixels_YUY2_to_UYVY(int width, int height, const void *src, int src_pitch, void *dst, int dst_pitch)
@@ -1806,11 +1811,14 @@
    return 0;
}

#endif /* SDL_HAVE_YUV */

int
SDL_ConvertPixels_YUV_to_YUV(int width, int height,
         Uint32 src_format, const void *src, int src_pitch,
         Uint32 dst_format, void *dst, int dst_pitch)
{
#if SDL_HAVE_YUV
    if (src_format == dst_format) {
        if (src == dst) {
            /* Nothing to do */
@@ -1830,6 +1838,9 @@
    } else {
        return SDL_SetError("SDL_ConvertPixels_YUV_to_YUV: Unsupported YUV conversion: %s -> %s", SDL_GetPixelFormatName(src_format), SDL_GetPixelFormatName(dst_format));
    }
#else
   return SDL_SetError("SDL not built with YUV support");
#endif
}

/* vi: set ts=4 sw=4 expandtab: */