From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001
From: 3gg <3gg@shellblade.net>
Date: Sat, 27 Dec 2025 12:03:39 -0800
Subject: Initial commit

---
 contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c | 460 ++++++++++++++++++++++
 1 file changed, 460 insertions(+)
 create mode 100644 contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c

(limited to 'contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c')

diff --git a/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c
new file mode 100644
index 0000000..37fe7e4
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/yuv2rgb/yuv_rgb_sse.c
@@ -0,0 +1,460 @@
+// Copyright 2016 Adrien Descamps
+// Distributed under BSD 3-Clause License
+#include "SDL_internal.h"
+
+#ifdef SDL_HAVE_YUV
+#include "yuv_rgb_internal.h"
+
+#ifdef SDL_SSE2_INTRINSICS
+
+/* SDL doesn't use these atm and compiling them adds seconds onto the build.  --ryan.
+#define SSE_FUNCTION_NAME	yuv420_rgb565_sse
+#define STD_FUNCTION_NAME	yuv420_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_rgb24_sse
+#define STD_FUNCTION_NAME	yuv420_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_rgba_sse
+#define STD_FUNCTION_NAME	yuv420_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_bgra_sse
+#define STD_FUNCTION_NAME	yuv420_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_argb_sse
+#define STD_FUNCTION_NAME	yuv420_argb_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_abgr_sse
+#define STD_FUNCTION_NAME	yuv420_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgb565_sse
+#define STD_FUNCTION_NAME	yuv422_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgb24_sse
+#define STD_FUNCTION_NAME	yuv422_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgba_sse
+#define STD_FUNCTION_NAME	yuv422_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_bgra_sse
+#define STD_FUNCTION_NAME	yuv422_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_argb_sse
+#define STD_FUNCTION_NAME	yuv422_argb_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_abgr_sse
+#define STD_FUNCTION_NAME	yuv422_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgb565_sse
+#define STD_FUNCTION_NAME	yuvnv12_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgb24_sse
+#define STD_FUNCTION_NAME	yuvnv12_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgba_sse
+#define STD_FUNCTION_NAME	yuvnv12_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_bgra_sse
+#define STD_FUNCTION_NAME	yuvnv12_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_argb_sse
+#define STD_FUNCTION_NAME	yuvnv12_argb_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_abgr_sse
+#define STD_FUNCTION_NAME	yuvnv12_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#define SSE_ALIGNED
+#include "yuv_rgb_sse_func.h"
+*/
+
+#define SSE_FUNCTION_NAME	yuv420_rgb565_sseu
+#define STD_FUNCTION_NAME	yuv420_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_rgb24_sseu
+#define STD_FUNCTION_NAME	yuv420_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_rgba_sseu
+#define STD_FUNCTION_NAME	yuv420_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_bgra_sseu
+#define STD_FUNCTION_NAME	yuv420_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_argb_sseu
+#define STD_FUNCTION_NAME	yuv420_argb_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv420_abgr_sseu
+#define STD_FUNCTION_NAME	yuv420_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_420
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgb565_sseu
+#define STD_FUNCTION_NAME	yuv422_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgb24_sseu
+#define STD_FUNCTION_NAME	yuv422_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_rgba_sseu
+#define STD_FUNCTION_NAME	yuv422_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_bgra_sseu
+#define STD_FUNCTION_NAME	yuv422_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_argb_sseu
+#define STD_FUNCTION_NAME	yuv422_argb_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuv422_abgr_sseu
+#define STD_FUNCTION_NAME	yuv422_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_422
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgb565_sseu
+#define STD_FUNCTION_NAME	yuvnv12_rgb565_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGB565
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgb24_sseu
+#define STD_FUNCTION_NAME	yuvnv12_rgb24_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGB24
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_rgba_sseu
+#define STD_FUNCTION_NAME	yuvnv12_rgba_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_RGBA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_bgra_sseu
+#define STD_FUNCTION_NAME	yuvnv12_bgra_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_BGRA
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_argb_sseu
+#define STD_FUNCTION_NAME	yuvnv12_argb_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_ARGB
+#include "yuv_rgb_sse_func.h"
+
+#define SSE_FUNCTION_NAME	yuvnv12_abgr_sseu
+#define STD_FUNCTION_NAME	yuvnv12_abgr_std
+#define YUV_FORMAT			YUV_FORMAT_NV12
+#define RGB_FORMAT			RGB_FORMAT_ABGR
+#include "yuv_rgb_sse_func.h"
+
+
+/* SDL doesn't use these atm and compiling them adds seconds onto the build.  --ryan.
+#define UNPACK_RGB24_32_STEP1(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+R1 = _mm_unpacklo_epi8(RGB1, RGB4); \
+R2 = _mm_unpackhi_epi8(RGB1, RGB4); \
+G1 = _mm_unpacklo_epi8(RGB2, RGB5); \
+G2 = _mm_unpackhi_epi8(RGB2, RGB5); \
+B1 = _mm_unpacklo_epi8(RGB3, RGB6); \
+B2 = _mm_unpackhi_epi8(RGB3, RGB6);
+
+#define UNPACK_RGB24_32_STEP2(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+RGB1 = _mm_unpacklo_epi8(R1, G2); \
+RGB2 = _mm_unpackhi_epi8(R1, G2); \
+RGB3 = _mm_unpacklo_epi8(R2, B1); \
+RGB4 = _mm_unpackhi_epi8(R2, B1); \
+RGB5 = _mm_unpacklo_epi8(G1, B2); \
+RGB6 = _mm_unpackhi_epi8(G1, B2); \
+
+#define UNPACK_RGB24_32(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+UNPACK_RGB24_32_STEP1(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+UNPACK_RGB24_32_STEP2(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+UNPACK_RGB24_32_STEP1(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+UNPACK_RGB24_32_STEP2(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+UNPACK_RGB24_32_STEP1(RGB1, RGB2, RGB3, RGB4, RGB5, RGB6, R1, R2, G1, G2, B1, B2) \
+
+#define RGB2YUV_16(R, G, B, Y, U, V) \
+Y = _mm_add_epi16(_mm_mullo_epi16(R, _mm_set1_epi16(param->matrix[0][0])), \
+		_mm_mullo_epi16(G, _mm_set1_epi16(param->matrix[0][1]))); \
+Y = _mm_add_epi16(Y, _mm_mullo_epi16(B, _mm_set1_epi16(param->matrix[0][2]))); \
+Y = _mm_add_epi16(Y, _mm_set1_epi16((param->y_shift)<<PRECISION)); \
+Y = _mm_srai_epi16(Y, PRECISION); \
+U = _mm_add_epi16(_mm_mullo_epi16(R, _mm_set1_epi16(param->matrix[1][0])), \
+		_mm_mullo_epi16(G, _mm_set1_epi16(param->matrix[1][1]))); \
+U = _mm_add_epi16(U, _mm_mullo_epi16(B, _mm_set1_epi16(param->matrix[1][2]))); \
+U = _mm_add_epi16(U, _mm_set1_epi16(128<<PRECISION)); \
+U = _mm_srai_epi16(U, PRECISION); \
+V = _mm_add_epi16(_mm_mullo_epi16(R, _mm_set1_epi16(param->matrix[2][0])), \
+		_mm_mullo_epi16(G, _mm_set1_epi16(param->matrix[2][1]))); \
+V = _mm_add_epi16(V, _mm_mullo_epi16(B, _mm_set1_epi16(param->matrix[2][2]))); \
+V = _mm_add_epi16(V, _mm_set1_epi16(128<<PRECISION)); \
+V = _mm_srai_epi16(V, PRECISION);
+*/
+
+#if 0  // SDL doesn't use these atm and compiling them adds seconds onto the build.  --ryan.
+#define RGB2YUV_32 \
+	__m128i r1, r2, b1, b2, g1, g2; \
+	__m128i r_16, g_16, b_16; \
+	__m128i y1_16, y2_16, u1_16, u2_16, v1_16, v2_16, y, u1, u2, v1, v2, u1_tmp, u2_tmp, v1_tmp, v2_tmp; \
+	__m128i rgb1 = LOAD_SI128((const __m128i*)(rgb_ptr1)), \
+		rgb2 = LOAD_SI128((const __m128i*)(rgb_ptr1+16)), \
+		rgb3 = LOAD_SI128((const __m128i*)(rgb_ptr1+32)), \
+		rgb4 = LOAD_SI128((const __m128i*)(rgb_ptr2)), \
+		rgb5 = LOAD_SI128((const __m128i*)(rgb_ptr2+16)), \
+		rgb6 = LOAD_SI128((const __m128i*)(rgb_ptr2+32)); \
+	/* unpack rgb24 data to r, g and b data in separate channels*/ \
+	UNPACK_RGB24_32(rgb1, rgb2, rgb3, rgb4, rgb5, rgb6, r1, r2, g1, g2, b1, b2) \
+	/* process pixels of first line */ \
+	r_16 = _mm_unpacklo_epi8(r1, _mm_setzero_si128()); \
+	g_16 = _mm_unpacklo_epi8(g1, _mm_setzero_si128()); \
+	b_16 = _mm_unpacklo_epi8(b1, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y1_16, u1_16, v1_16) \
+	r_16 = _mm_unpackhi_epi8(r1, _mm_setzero_si128()); \
+	g_16 = _mm_unpackhi_epi8(g1, _mm_setzero_si128()); \
+	b_16 = _mm_unpackhi_epi8(b1, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y2_16, u2_16, v2_16) \
+	y = _mm_packus_epi16(y1_16, y2_16); \
+	u1 = _mm_packus_epi16(u1_16, u2_16); \
+	v1 = _mm_packus_epi16(v1_16, v2_16); \
+	/* save Y values */ \
+	SAVE_SI128((__m128i*)(y_ptr1), y); \
+	/* process pixels of second line */ \
+	r_16 = _mm_unpacklo_epi8(r2, _mm_setzero_si128()); \
+	g_16 = _mm_unpacklo_epi8(g2, _mm_setzero_si128()); \
+	b_16 = _mm_unpacklo_epi8(b2, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y1_16, u1_16, v1_16) \
+	r_16 = _mm_unpackhi_epi8(r2, _mm_setzero_si128()); \
+	g_16 = _mm_unpackhi_epi8(g2, _mm_setzero_si128()); \
+	b_16 = _mm_unpackhi_epi8(b2, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y2_16, u2_16, v2_16) \
+	y = _mm_packus_epi16(y1_16, y2_16); \
+	u2 = _mm_packus_epi16(u1_16, u2_16); \
+	v2 = _mm_packus_epi16(v1_16, v2_16); \
+	/* save Y values */ \
+	SAVE_SI128((__m128i*)(y_ptr2), y); \
+	/* vertical subsampling of u/v values */ \
+	u1_tmp = _mm_avg_epu8(u1, u2); \
+	v1_tmp = _mm_avg_epu8(v1, v2); \
+	/* do the same again with next data */ \
+	rgb1 = LOAD_SI128((const __m128i*)(rgb_ptr1+48)); \
+	rgb2 = LOAD_SI128((const __m128i*)(rgb_ptr1+64)); \
+	rgb3 = LOAD_SI128((const __m128i*)(rgb_ptr1+80)); \
+	rgb4 = LOAD_SI128((const __m128i*)(rgb_ptr2+48)); \
+	rgb5 = LOAD_SI128((const __m128i*)(rgb_ptr2+64)); \
+	rgb6 = LOAD_SI128((const __m128i*)(rgb_ptr2+80)); \
+	/* unpack rgb24 data to r, g and b data in separate channels*/ \
+	UNPACK_RGB24_32(rgb1, rgb2, rgb3, rgb4, rgb5, rgb6, r1, r2, g1, g2, b1, b2) \
+	/* process pixels of first line */ \
+	r_16 = _mm_unpacklo_epi8(r1, _mm_setzero_si128()); \
+	g_16 = _mm_unpacklo_epi8(g1, _mm_setzero_si128()); \
+	b_16 = _mm_unpacklo_epi8(b1, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y1_16, u1_16, v1_16) \
+	r_16 = _mm_unpackhi_epi8(r1, _mm_setzero_si128()); \
+	g_16 = _mm_unpackhi_epi8(g1, _mm_setzero_si128()); \
+	b_16 = _mm_unpackhi_epi8(b1, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y2_16, u2_16, v2_16) \
+	y = _mm_packus_epi16(y1_16, y2_16); \
+	u1 = _mm_packus_epi16(u1_16, u2_16); \
+	v1 = _mm_packus_epi16(v1_16, v2_16); \
+	/* save Y values */ \
+	SAVE_SI128((__m128i*)(y_ptr1+16), y); \
+	/* process pixels of second line */ \
+	r_16 = _mm_unpacklo_epi8(r2, _mm_setzero_si128()); \
+	g_16 = _mm_unpacklo_epi8(g2, _mm_setzero_si128()); \
+	b_16 = _mm_unpacklo_epi8(b2, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y1_16, u1_16, v1_16) \
+	r_16 = _mm_unpackhi_epi8(r2, _mm_setzero_si128()); \
+	g_16 = _mm_unpackhi_epi8(g2, _mm_setzero_si128()); \
+	b_16 = _mm_unpackhi_epi8(b2, _mm_setzero_si128()); \
+	RGB2YUV_16(r_16, g_16, b_16, y2_16, u2_16, v2_16) \
+	y = _mm_packus_epi16(y1_16, y2_16); \
+	u2 = _mm_packus_epi16(u1_16, u2_16); \
+	v2 = _mm_packus_epi16(v1_16, v2_16); \
+	/* save Y values */ \
+	SAVE_SI128((__m128i*)(y_ptr2+16), y); \
+	/* vertical subsampling of u/v values */ \
+	u2_tmp = _mm_avg_epu8(u1, u2); \
+	v2_tmp = _mm_avg_epu8(v1, v2); \
+	/* horizontal subsampling of u/v values */ \
+	u1 = _mm_packus_epi16(_mm_srl_epi16(u1_tmp, _mm_cvtsi32_si128(8)), _mm_srl_epi16(u2_tmp, _mm_cvtsi32_si128(8))); \
+	v1 = _mm_packus_epi16(_mm_srl_epi16(v1_tmp, _mm_cvtsi32_si128(8)), _mm_srl_epi16(v2_tmp, _mm_cvtsi32_si128(8))); \
+	u2 = _mm_packus_epi16(_mm_and_si128(u1_tmp, _mm_set1_epi16(0xFF)), _mm_and_si128(u2_tmp, _mm_set1_epi16(0xFF))); \
+	v2 = _mm_packus_epi16(_mm_and_si128(v1_tmp, _mm_set1_epi16(0xFF)), _mm_and_si128(v2_tmp, _mm_set1_epi16(0xFF))); \
+	u1 = _mm_avg_epu8(u1, u2); \
+	v1 = _mm_avg_epu8(v1, v2); \
+	SAVE_SI128((__m128i*)(u_ptr), u1); \
+	SAVE_SI128((__m128i*)(v_ptr), v1);
+#endif
+
+/* SDL doesn't use these atm and compiling them adds seconds onto the build.  --ryan.
+void SDL_TARGETING("sse2") rgb24_yuv420_sse(uint32_t width, uint32_t height,
+	const uint8_t *RGB, uint32_t RGB_stride,
+	uint8_t *Y, uint8_t *U, uint8_t *V, uint32_t Y_stride, uint32_t UV_stride,
+	YCbCrType yuv_type)
+{
+	#define LOAD_SI128 _mm_load_si128
+	#define SAVE_SI128 _mm_stream_si128
+	const RGB2YUVParam *const param = &(RGB2YUV[yuv_type]);
+
+	uint32_t xpos, ypos;
+	for(ypos=0; ypos<(height-1); ypos+=2)
+	{
+		const uint8_t *rgb_ptr1=RGB+ypos*RGB_stride,
+			*rgb_ptr2=RGB+(ypos+1)*RGB_stride;
+
+		uint8_t *y_ptr1=Y+ypos*Y_stride,
+			*y_ptr2=Y+(ypos+1)*Y_stride,
+			*u_ptr=U+(ypos/2)*UV_stride,
+			*v_ptr=V+(ypos/2)*UV_stride;
+
+		for(xpos=0; xpos<(width-31); xpos+=32)
+		{
+			RGB2YUV_32
+
+			rgb_ptr1+=96;
+			rgb_ptr2+=96;
+			y_ptr1+=32;
+			y_ptr2+=32;
+			u_ptr+=16;
+			v_ptr+=16;
+		}
+	}
+	#undef LOAD_SI128
+	#undef SAVE_SI128
+}
+
+void SDL_TARGETING("sse2") rgb24_yuv420_sseu(uint32_t width, uint32_t height,
+	const uint8_t *RGB, uint32_t RGB_stride,
+	uint8_t *Y, uint8_t *U, uint8_t *V, uint32_t Y_stride, uint32_t UV_stride,
+	YCbCrType yuv_type)
+{
+	#define LOAD_SI128 _mm_loadu_si128
+	#define SAVE_SI128 _mm_storeu_si128
+	const RGB2YUVParam *const param = &(RGB2YUV[yuv_type]);
+
+	uint32_t xpos, ypos;
+	for(ypos=0; ypos<(height-1); ypos+=2)
+	{
+		const uint8_t *rgb_ptr1=RGB+ypos*RGB_stride,
+			*rgb_ptr2=RGB+(ypos+1)*RGB_stride;
+
+		uint8_t *y_ptr1=Y+ypos*Y_stride,
+			*y_ptr2=Y+(ypos+1)*Y_stride,
+			*u_ptr=U+(ypos/2)*UV_stride,
+			*v_ptr=V+(ypos/2)*UV_stride;
+
+		for(xpos=0; xpos<(width-31); xpos+=32)
+		{
+			RGB2YUV_32
+
+			rgb_ptr1+=96;
+			rgb_ptr2+=96;
+			y_ptr1+=32;
+			y_ptr2+=32;
+			u_ptr+=16;
+			v_ptr+=16;
+		}
+	}
+	#undef LOAD_SI128
+	#undef SAVE_SI128
+}
+*/
+
+#endif // SDL_SSE2_INTRINSICS
+
+#endif // SDL_HAVE_YUV
-- 
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