swscale: implement >8bit scaling support.

This means that precision is retained when scaling between sample
formats with >8 bits per component (48bit RGB, 16bit grayscale,
9/10/16bit YUV).

1 files changed, 457 insertions, 237 deletions

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 64ba97e7d4..987afff2d2 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -195,18 +195,18 @@ DECLARE_ALIGNED(8, const uint8_t, dither_8x8_220)[8][8]={
 #endif
 
 static av_always_inline void
-yuv2yuvX16_c_template(const int16_t *lumFilter, const int16_t **lumSrc,
+yuv2yuvX16_c_template(const int16_t *lumFilter, const int32_t **lumSrc,
                       int lumFilterSize, const int16_t *chrFilter,
-                      const int16_t **chrUSrc, const int16_t **chrVSrc,
-                      int chrFilterSize, const int16_t **alpSrc,
+                      const int32_t **chrUSrc, const int32_t **chrVSrc,
+                      int chrFilterSize, const int32_t **alpSrc,
                       uint16_t *dest[4], int dstW, int chrDstW,
                       int big_endian, int output_bits)
 {
     //FIXME Optimize (just quickly written not optimized..)
     int i;
-    int shift = 11 + 16 - output_bits;
     uint16_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2],
              *aDest = CONFIG_SWSCALE_ALPHA ? dest[3] : NULL;
+    int shift = 15 + 16 - output_bits;
 
 #define output_pixel(pos, val) \
     if (big_endian) { \
@@ -223,7 +223,7 @@ yuv2yuvX16_c_template(const int16_t *lumFilter, const int16_t **lumSrc,
         } \
     }
     for (i = 0; i < dstW; i++) {
-        int val = 1 << (26-output_bits);
+        int val = 1 << (30-output_bits);
         int j;
 
         for (j = 0; j < lumFilterSize; j++)
@@ -234,8 +234,8 @@ yuv2yuvX16_c_template(const int16_t *lumFilter, const int16_t **lumSrc,
 
     if (uDest) {
         for (i = 0; i < chrDstW; i++) {
-            int u = 1 << (26-output_bits);
-            int v = 1 << (26-output_bits);
+            int u = 1 << (30-output_bits);
+            int v = 1 << (30-output_bits);
             int j;
 
             for (j = 0; j < chrFilterSize; j++) {
@@ -250,7 +250,7 @@ yuv2yuvX16_c_template(const int16_t *lumFilter, const int16_t **lumSrc,
 
     if (CONFIG_SWSCALE_ALPHA && aDest) {
         for (i = 0; i < dstW; i++) {
-            int val = 1 << (26-output_bits);
+            int val = 1 << (30-output_bits);
             int j;
 
             for (j = 0; j < lumFilterSize; j++)
@@ -264,12 +264,16 @@ yuv2yuvX16_c_template(const int16_t *lumFilter, const int16_t **lumSrc,
 
 #define yuv2NBPS(bits, BE_LE, is_be) \
 static void yuv2yuvX ## bits ## BE_LE ## _c(SwsContext *c, const int16_t *lumFilter, \
-                              const int16_t **lumSrc, int lumFilterSize, \
-                              const int16_t *chrFilter, const int16_t **chrUSrc, \
-                              const int16_t **chrVSrc, \
-                              int chrFilterSize, const int16_t **alpSrc, \
+                              const int16_t **_lumSrc, int lumFilterSize, \
+                              const int16_t *chrFilter, const int16_t **_chrUSrc, \
+                              const int16_t **_chrVSrc, \
+                              int chrFilterSize, const int16_t **_alpSrc, \
                               uint8_t *_dest[4], int dstW, int chrDstW) \
 { \
+    const int32_t **lumSrc  = (const int32_t **) _lumSrc, \
+                  **chrUSrc = (const int32_t **) _chrUSrc, \
+                  **chrVSrc = (const int32_t **) _chrVSrc, \
+                  **alpSrc  = (const int32_t **) _alpSrc; \
     yuv2yuvX16_c_template(lumFilter, lumSrc, lumFilterSize, \
                           chrFilter, chrUSrc, chrVSrc, chrFilterSize, \
                           alpSrc, (uint16_t **) _dest, \
@@ -418,109 +422,121 @@ static void yuv2nv12X_c(SwsContext *c, const int16_t *lumFilter,
 
 static av_always_inline void
 yuv2gray16_X_c_template(SwsContext *c, const int16_t *lumFilter,
-                        const int16_t **lumSrc, int lumFilterSize,
-                        const int16_t *chrFilter, const int16_t **chrUSrc,
-                        const int16_t **chrVSrc, int chrFilterSize,
-                        const int16_t **alpSrc, uint8_t *dest, int dstW,
+                        const int32_t **lumSrc, int lumFilterSize,
+                        const int16_t *chrFilter, const int32_t **chrUSrc,
+                        const int32_t **chrVSrc, int chrFilterSize,
+                        const int32_t **alpSrc, uint16_t *dest, int dstW,
                         int y, enum PixelFormat target)
 {
     int i;
 
     for (i = 0; i < (dstW >> 1); i++) {
         int j;
-        int Y1 = 1 << 18;
-        int Y2 = 1 << 18;
-        const int i2 = 2 * i;
+        int Y1 = 1 << 14;
+        int Y2 = 1 << 14;
 
         for (j = 0; j < lumFilterSize; j++) {
-            Y1 += lumSrc[j][i2]   * lumFilter[j];
-            Y2 += lumSrc[j][i2+1] * lumFilter[j];
+            Y1 += lumSrc[j][i * 2]     * lumFilter[j];
+            Y2 += lumSrc[j][i * 2 + 1] * lumFilter[j];
         }
-        Y1 >>= 11;
-        Y2 >>= 11;
+        Y1 >>= 15;
+        Y2 >>= 15;
         if ((Y1 | Y2) & 0x10000) {
             Y1 = av_clip_uint16(Y1);
             Y2 = av_clip_uint16(Y2);
         }
-        output_pixel(&dest[2 * i2 + 0], Y1);
-        output_pixel(&dest[2 * i2 + 2], Y2);
+        output_pixel(&dest[i * 2 + 0], Y1);
+        output_pixel(&dest[i * 2 + 1], Y2);
     }
 }
 
 static av_always_inline void
-yuv2gray16_2_c_template(SwsContext *c, const int16_t *buf[2],
-                        const int16_t *ubuf[2], const int16_t *vbuf[2],
-                        const int16_t *abuf[2], uint8_t *dest, int dstW,
+yuv2gray16_2_c_template(SwsContext *c, const int32_t *buf[2],
+                        const int32_t *ubuf[2], const int32_t *vbuf[2],
+                        const int32_t *abuf[2], uint16_t *dest, int dstW,
                         int yalpha, int uvalpha, int y,
                         enum PixelFormat target)
 {
     int  yalpha1 = 4095 - yalpha;
     int i;
-    const int16_t *buf0 = buf[0], *buf1 = buf[1];
+    const int32_t *buf0 = buf[0], *buf1 = buf[1];
 
     for (i = 0; i < (dstW >> 1); i++) {
-        const int i2 = 2 * i;
-        int Y1 = (buf0[i2  ] * yalpha1 + buf1[i2  ] * yalpha) >> 11;
-        int Y2 = (buf0[i2+1] * yalpha1 + buf1[i2+1] * yalpha) >> 11;
+        int Y1 = (buf0[i * 2    ] * yalpha1 + buf1[i * 2    ] * yalpha) >> 15;
+        int Y2 = (buf0[i * 2 + 1] * yalpha1 + buf1[i * 2 + 1] * yalpha) >> 15;
 
-        output_pixel(&dest[2 * i2 + 0], Y1);
-        output_pixel(&dest[2 * i2 + 2], Y2);
+        output_pixel(&dest[i * 2 + 0], Y1);
+        output_pixel(&dest[i * 2 + 1], Y2);
     }
 }
 
 static av_always_inline void
-yuv2gray16_1_c_template(SwsContext *c, const int16_t *buf0,
-                        const int16_t *ubuf[2], const int16_t *vbuf[2],
-                        const int16_t *abuf0, uint8_t *dest, int dstW,
+yuv2gray16_1_c_template(SwsContext *c, const int32_t *buf0,
+                        const int32_t *ubuf[2], const int32_t *vbuf[2],
+                        const int32_t *abuf0, uint16_t *dest, int dstW,
                         int uvalpha, int y, enum PixelFormat target)
 {
     int i;
 
     for (i = 0; i < (dstW >> 1); i++) {
-        const int i2 = 2 * i;
-        int Y1 = buf0[i2  ] << 1;
-        int Y2 = buf0[i2+1] << 1;
+        int Y1 = buf0[i * 2    ] << 1;
+        int Y2 = buf0[i * 2 + 1] << 1;
 
-        output_pixel(&dest[2 * i2 + 0], Y1);
-        output_pixel(&dest[2 * i2 + 2], Y2);
+        output_pixel(&dest[i * 2 + 0], Y1);
+        output_pixel(&dest[i * 2 + 1], Y2);
     }
 }
 
 #undef output_pixel
 
-#define YUV2PACKEDWRAPPER(name, base, ext, fmt) \
+#define YUV2PACKED16WRAPPER(name, base, ext, fmt) \
 static void name ## ext ## _X_c(SwsContext *c, const int16_t *lumFilter, \
-                        const int16_t **lumSrc, int lumFilterSize, \
-                        const int16_t *chrFilter, const int16_t **chrUSrc, \
-                        const int16_t **chrVSrc, int chrFilterSize, \
-                        const int16_t **alpSrc, uint8_t *dest, int dstW, \
+                        const int16_t **_lumSrc, int lumFilterSize, \
+                        const int16_t *chrFilter, const int16_t **_chrUSrc, \
+                        const int16_t **_chrVSrc, int chrFilterSize, \
+                        const int16_t **_alpSrc, uint8_t *_dest, int dstW, \
                         int y) \
 { \
+    const int32_t **lumSrc  = (const int32_t **) _lumSrc, \
+                  **chrUSrc = (const int32_t **) _chrUSrc, \
+                  **chrVSrc = (const int32_t **) _chrVSrc, \
+                  **alpSrc  = (const int32_t **) _alpSrc; \
+    uint16_t *dest = (uint16_t *) _dest; \
     name ## base ## _X_c_template(c, lumFilter, lumSrc, lumFilterSize, \
                           chrFilter, chrUSrc, chrVSrc, chrFilterSize, \
                           alpSrc, dest, dstW, y, fmt); \
 } \
  \
-static void name ## ext ## _2_c(SwsContext *c, const int16_t *buf[2], \
-                        const int16_t *ubuf[2], const int16_t *vbuf[2], \
-                        const int16_t *abuf[2], uint8_t *dest, int dstW, \
+static void name ## ext ## _2_c(SwsContext *c, const int16_t *_buf[2], \
+                        const int16_t *_ubuf[2], const int16_t *_vbuf[2], \
+                        const int16_t *_abuf[2], uint8_t *_dest, int dstW, \
                         int yalpha, int uvalpha, int y) \
 { \
+    const int32_t **buf  = (const int32_t **) _buf, \
+                  **ubuf = (const int32_t **) _ubuf, \
+                  **vbuf = (const int32_t **) _vbuf, \
+                  **abuf = (const int32_t **) _abuf; \
+    uint16_t *dest = (uint16_t *) _dest; \
     name ## base ## _2_c_template(c, buf, ubuf, vbuf, abuf, \
                           dest, dstW, yalpha, uvalpha, y, fmt); \
 } \
  \
-static void name ## ext ## _1_c(SwsContext *c, const int16_t *buf0, \
-                        const int16_t *ubuf[2], const int16_t *vbuf[2], \
-                        const int16_t *abuf0, uint8_t *dest, int dstW, \
+static void name ## ext ## _1_c(SwsContext *c, const int16_t *_buf0, \
+                        const int16_t *_ubuf[2], const int16_t *_vbuf[2], \
+                        const int16_t *_abuf0, uint8_t *_dest, int dstW, \
                         int uvalpha, int y) \
 { \
+    const int32_t *buf0  = (const int32_t *)  _buf0, \
+                 **ubuf  = (const int32_t **) _ubuf, \
+                 **vbuf  = (const int32_t **) _vbuf, \
+                  *abuf0 = (const int32_t *)  _abuf0; \
+    uint16_t *dest = (uint16_t *) _dest; \
     name ## base ## _1_c_template(c, buf0, ubuf, vbuf, abuf0, dest, \
                                   dstW, uvalpha, y, fmt); \
 }
 
-YUV2PACKEDWRAPPER(yuv2gray16,, LE, PIX_FMT_GRAY16LE);
-YUV2PACKEDWRAPPER(yuv2gray16,, BE, PIX_FMT_GRAY16BE);
+YUV2PACKED16WRAPPER(yuv2gray16,, LE, PIX_FMT_GRAY16LE);
+YUV2PACKED16WRAPPER(yuv2gray16,, BE, PIX_FMT_GRAY16BE);
 
 #define output_pixel(pos, acc) \
     if (target == PIX_FMT_MONOBLACK) { \
@@ -616,6 +632,38 @@ yuv2mono_1_c_template(SwsContext *c, const int16_t *buf0,
 
 #undef output_pixel
 
+#define YUV2PACKEDWRAPPER(name, base, ext, fmt) \
+static void name ## ext ## _X_c(SwsContext *c, const int16_t *lumFilter, \
+                                const int16_t **lumSrc, int lumFilterSize, \
+                                const int16_t *chrFilter, const int16_t **chrUSrc, \
+                                const int16_t **chrVSrc, int chrFilterSize, \
+                                const int16_t **alpSrc, uint8_t *dest, int dstW, \
+                                int y) \
+{ \
+    name ## base ## _X_c_template(c, lumFilter, lumSrc, lumFilterSize, \
+                                  chrFilter, chrUSrc, chrVSrc, chrFilterSize, \
+                                  alpSrc, dest, dstW, y, fmt); \
+} \
+ \
+static void name ## ext ## _2_c(SwsContext *c, const int16_t *buf[2], \
+                                const int16_t *ubuf[2], const int16_t *vbuf[2], \
+                                const int16_t *abuf[2], uint8_t *dest, int dstW, \
+                                int yalpha, int uvalpha, int y) \
+{ \
+    name ## base ## _2_c_template(c, buf, ubuf, vbuf, abuf, \
+                                  dest, dstW, yalpha, uvalpha, y, fmt); \
+} \
+ \
+static void name ## ext ## _1_c(SwsContext *c, const int16_t *buf0, \
+                                const int16_t *ubuf[2], const int16_t *vbuf[2], \
+                                const int16_t *abuf0, uint8_t *dest, int dstW, \
+                                int uvalpha, int y) \
+{ \
+    name ## base ## _1_c_template(c, buf0, ubuf, vbuf, \
+                                  abuf0, dest, dstW, uvalpha, \
+                                  y, fmt); \
+}
+
 YUV2PACKEDWRAPPER(yuv2mono,, white, PIX_FMT_MONOWHITE);
 YUV2PACKEDWRAPPER(yuv2mono,, black, PIX_FMT_MONOBLACK);
 
@@ -731,26 +779,32 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
 YUV2PACKEDWRAPPER(yuv2, 422, yuyv422, PIX_FMT_YUYV422);
 YUV2PACKEDWRAPPER(yuv2, 422, uyvy422, PIX_FMT_UYVY422);
 
-#define r_b ((target == PIX_FMT_RGB48LE || target == PIX_FMT_RGB48BE) ? r : b)
-#define b_r ((target == PIX_FMT_RGB48LE || target == PIX_FMT_RGB48BE) ? b : r)
+#define R_B ((target == PIX_FMT_RGB48LE || target == PIX_FMT_RGB48BE) ? R : B)
+#define B_R ((target == PIX_FMT_RGB48LE || target == PIX_FMT_RGB48BE) ? B : R)
+#define output_pixel(pos, val) \
+    if (isBE(target)) { \
+        AV_WB16(pos, val); \
+    } else { \
+        AV_WL16(pos, val); \
+    }
 
 static av_always_inline void
 yuv2rgb48_X_c_template(SwsContext *c, const int16_t *lumFilter,
-                       const int16_t **lumSrc, int lumFilterSize,
-                       const int16_t *chrFilter, const int16_t **chrUSrc,
-                       const int16_t **chrVSrc, int chrFilterSize,
-                       const int16_t **alpSrc, uint8_t *dest, int dstW,
+                       const int32_t **lumSrc, int lumFilterSize,
+                       const int16_t *chrFilter, const int32_t **chrUSrc,
+                       const int32_t **chrVSrc, int chrFilterSize,
+                       const int32_t **alpSrc, uint16_t *dest, int dstW,
                        int y, enum PixelFormat target)
 {
     int i;
 
     for (i = 0; i < (dstW >> 1); i++) {
         int j;
-        int Y1 = 1 << 18;
-        int Y2 = 1 << 18;
-        int U  = 1 << 18;
-        int V  = 1 << 18;
-        const uint8_t *r, *g, *b;
+        int Y1 = 0;
+        int Y2 = 0;
+        int U  = -128 << 23; // 19
+        int V  = -128 << 23;
+        int R, G, B;
 
         for (j = 0; j < lumFilterSize; j++) {
             Y1 += lumSrc[j][i * 2]     * lumFilter[j];
@@ -760,40 +814,45 @@ yuv2rgb48_X_c_template(SwsContext *c, const int16_t *lumFilter,
             U += chrUSrc[j][i] * chrFilter[j];
             V += chrVSrc[j][i] * chrFilter[j];
         }
-        Y1 >>= 19;
-        Y2 >>= 19;
-        U  >>= 19;
-        V  >>= 19;
-        if ((Y1 | Y2 | U | V) & 0x100) {
-            Y1 = av_clip_uint8(Y1);
-            Y2 = av_clip_uint8(Y2);
-            U  = av_clip_uint8(U);
-            V  = av_clip_uint8(V);
-        }
 
-        /* FIXME fix tables so that clipping is not needed and then use _NOCLIP*/
-        r = (const uint8_t *) c->table_rV[V];
-        g = (const uint8_t *)(c->table_gU[U] + c->table_gV[V]);
-        b = (const uint8_t *) c->table_bU[U];
+        // 8bit: 12+15=27; 16-bit: 12+19=31
+        Y1 >>= 14; // 10
+        Y2 >>= 14;
+        U  >>= 14;
+        V  >>= 14;
+
+        // 8bit: 27 -> 17bit, 16bit: 31 - 14 = 17bit
+        Y1 -= c->yuv2rgb_y_offset;
+        Y2 -= c->yuv2rgb_y_offset;
+        Y1 *= c->yuv2rgb_y_coeff;
+        Y2 *= c->yuv2rgb_y_coeff;
+        Y1 += 1 << 13; // 21
+        Y2 += 1 << 13;
+        // 8bit: 17 + 13bit = 30bit, 16bit: 17 + 13bit = 30bit
+
+        R = V * c->yuv2rgb_v2r_coeff;
+        G = V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff;
+        B =                            U * c->yuv2rgb_u2b_coeff;
 
-        dest[ 0] = dest[ 1] = r_b[Y1];
-        dest[ 2] = dest[ 3] =   g[Y1];
-        dest[ 4] = dest[ 5] = b_r[Y1];
-        dest[ 6] = dest[ 7] = r_b[Y2];
-        dest[ 8] = dest[ 9] =   g[Y2];
-        dest[10] = dest[11] = b_r[Y2];
-        dest += 12;
+        // 8bit: 30 - 22 = 8bit, 16bit: 30bit - 14 = 16bit
+        output_pixel(&dest[0], av_clip_uintp2(R_B + Y1, 30) >> 14);
+        output_pixel(&dest[1], av_clip_uintp2(  G + Y1, 30) >> 14);
+        output_pixel(&dest[2], av_clip_uintp2(B_R + Y1, 30) >> 14);
+        output_pixel(&dest[3], av_clip_uintp2(R_B + Y2, 30) >> 14);
+        output_pixel(&dest[4], av_clip_uintp2(  G + Y2, 30) >> 14);
+        output_pixel(&dest[5], av_clip_uintp2(B_R + Y2, 30) >> 14);
+        dest += 6;
     }
 }
 
 static av_always_inline void
-yuv2rgb48_2_c_template(SwsContext *c, const int16_t *buf[2],
-                       const int16_t *ubuf[2], const int16_t *vbuf[2],
-                       const int16_t *abuf[2], uint8_t *dest, int dstW,
+yuv2rgb48_2_c_template(SwsContext *c, const int32_t *buf[2],
+                       const int32_t *ubuf[2], const int32_t *vbuf[2],
+                       const int32_t *abuf[2], uint16_t *dest, int dstW,
                        int yalpha, int uvalpha, int y,
                        enum PixelFormat target)
 {
-    const int16_t *buf0  = buf[0],  *buf1  = buf[1],
+    const int32_t *buf0  = buf[0],  *buf1  = buf[1],
                   *ubuf0 = ubuf[0], *ubuf1 = ubuf[1],
                   *vbuf0 = vbuf[0], *vbuf1 = vbuf[1];
     int  yalpha1 = 4095 - yalpha;
@@ -801,80 +860,108 @@ yuv2rgb48_2_c_template(SwsContext *c, const int16_t *buf[2],
     int i;
 
     for (i = 0; i < (dstW >> 1); i++) {
-        int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha)  >> 19;
-        int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha)  >> 19;
-        int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha) >> 19;
-        int V  = (vbuf0[i]        * uvalpha1 + vbuf1[i]        * uvalpha) >> 19;
-        const uint8_t *r = (const uint8_t *) c->table_rV[V],
-                      *g = (const uint8_t *)(c->table_gU[U] + c->table_gV[V]),
-                      *b = (const uint8_t *) c->table_bU[U];
+        int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha) >> 14;
+        int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha) >> 14;
+        int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha + (-128 << 23)) >> 14;
+        int V  = (vbuf0[i]        * uvalpha1 + vbuf1[i]        * uvalpha + (-128 << 23)) >> 14;
+        int R, G, B;
 
-        dest[ 0] = dest[ 1] = r_b[Y1];
-        dest[ 2] = dest[ 3] =   g[Y1];
-        dest[ 4] = dest[ 5] = b_r[Y1];
-        dest[ 6] = dest[ 7] = r_b[Y2];
-        dest[ 8] = dest[ 9] =   g[Y2];
-        dest[10] = dest[11] = b_r[Y2];
-        dest += 12;
+        Y1 -= c->yuv2rgb_y_offset;
+        Y2 -= c->yuv2rgb_y_offset;
+        Y1 *= c->yuv2rgb_y_coeff;
+        Y2 *= c->yuv2rgb_y_coeff;
+        Y1 += 1 << 13;
+        Y2 += 1 << 13;
+
+        R = V * c->yuv2rgb_v2r_coeff;
+        G = V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff;
+        B =                            U * c->yuv2rgb_u2b_coeff;
+
+        output_pixel(&dest[0], av_clip_uintp2(R_B + Y1, 30) >> 14);
+        output_pixel(&dest[1], av_clip_uintp2(  G + Y1, 30) >> 14);
+        output_pixel(&dest[2], av_clip_uintp2(B_R + Y1, 30) >> 14);
+        output_pixel(&dest[3], av_clip_uintp2(R_B + Y2, 30) >> 14);
+        output_pixel(&dest[4], av_clip_uintp2(  G + Y2, 30) >> 14);
+        output_pixel(&dest[5], av_clip_uintp2(B_R + Y2, 30) >> 14);
+        dest += 6;
     }
 }
 
 static av_always_inline void
-yuv2rgb48_1_c_template(SwsContext *c, const int16_t *buf0,
-                       const int16_t *ubuf[2], const int16_t *vbuf[2],
-                       const int16_t *abuf0, uint8_t *dest, int dstW,
+yuv2rgb48_1_c_template(SwsContext *c, const int32_t *buf0,
+                       const int32_t *ubuf[2], const int32_t *vbuf[2],
+                       const int32_t *abuf0, uint16_t *dest, int dstW,
                        int uvalpha, int y, enum PixelFormat target)
 {
-    const int16_t *ubuf0 = ubuf[0], *ubuf1 = ubuf[1],
+    const int32_t *ubuf0 = ubuf[0], *ubuf1 = ubuf[1],
                   *vbuf0 = vbuf[0], *vbuf1 = vbuf[1];
     int i;
 
     if (uvalpha < 2048) {
         for (i = 0; i < (dstW >> 1); i++) {
-            int Y1 = buf0[i * 2]     >> 7;
-            int Y2 = buf0[i * 2 + 1] >> 7;
-            int U  = ubuf1[i]        >> 7;
-            int V  = vbuf1[i]        >> 7;
-            const uint8_t *r = (const uint8_t *) c->table_rV[V],
-                          *g = (const uint8_t *)(c->table_gU[U] + c->table_gV[V]),
-                          *b = (const uint8_t *) c->table_bU[U];
-
-            dest[ 0] = dest[ 1] = r_b[Y1];
-            dest[ 2] = dest[ 3] =   g[Y1];
-            dest[ 4] = dest[ 5] = b_r[Y1];
-            dest[ 6] = dest[ 7] = r_b[Y2];
-            dest[ 8] = dest[ 9] =   g[Y2];
-            dest[10] = dest[11] = b_r[Y2];
-            dest += 12;
+            int Y1 = (buf0[i * 2]    ) >> 2;
+            int Y2 = (buf0[i * 2 + 1]) >> 2;
+            int U  = (ubuf0[i] + (-128 << 11)) >> 2;
+            int V  = (vbuf0[i] + (-128 << 11)) >> 2;
+            int R, G, B;
+
+            Y1 -= c->yuv2rgb_y_offset;
+            Y2 -= c->yuv2rgb_y_offset;
+            Y1 *= c->yuv2rgb_y_coeff;
+            Y2 *= c->yuv2rgb_y_coeff;
+            Y1 += 1 << 13;
+            Y2 += 1 << 13;
+
+            R = V * c->yuv2rgb_v2r_coeff;
+            G = V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff;
+            B =                            U * c->yuv2rgb_u2b_coeff;
+
+            output_pixel(&dest[0], av_clip_uintp2(R_B + Y1, 30) >> 14);
+            output_pixel(&dest[1], av_clip_uintp2(  G + Y1, 30) >> 14);
+            output_pixel(&dest[2], av_clip_uintp2(B_R + Y1, 30) >> 14);
+            output_pixel(&dest[3], av_clip_uintp2(R_B + Y2, 30) >> 14);
+            output_pixel(&dest[4], av_clip_uintp2(  G + Y2, 30) >> 14);
+            output_pixel(&dest[5], av_clip_uintp2(B_R + Y2, 30) >> 14);
+            dest += 6;
         }
     } else {
         for (i = 0; i < (dstW >> 1); i++) {
-            int Y1 =  buf0[i * 2]          >> 7;
-            int Y2 =  buf0[i * 2 + 1]      >> 7;
-            int U  = (ubuf0[i] + ubuf1[i]) >> 8;
-            int V  = (vbuf0[i] + vbuf1[i]) >> 8;
-            const uint8_t *r = (const uint8_t *) c->table_rV[V],
-                          *g = (const uint8_t *)(c->table_gU[U] + c->table_gV[V]),
-                          *b = (const uint8_t *) c->table_bU[U];
-
-            dest[ 0] = dest[ 1] = r_b[Y1];
-            dest[ 2] = dest[ 3] =   g[Y1];
-            dest[ 4] = dest[ 5] = b_r[Y1];
-            dest[ 6] = dest[ 7] = r_b[Y2];
-            dest[ 8] = dest[ 9] =   g[Y2];
-            dest[10] = dest[11] = b_r[Y2];
-            dest += 12;
+            int Y1 = (buf0[i * 2]    ) >> 2;
+            int Y2 = (buf0[i * 2 + 1]) >> 2;
+            int U  = (ubuf0[i] + ubuf1[i] + (-128 << 11)) >> 3;
+            int V  = (vbuf0[i] + vbuf1[i] + (-128 << 11)) >> 3;
+            int R, G, B;
+
+            Y1 -= c->yuv2rgb_y_offset;
+            Y2 -= c->yuv2rgb_y_offset;
+            Y1 *= c->yuv2rgb_y_coeff;
+            Y2 *= c->yuv2rgb_y_coeff;
+            Y1 += 1 << 13;
+            Y2 += 1 << 13;
+
+            R = V * c->yuv2rgb_v2r_coeff;
+            G = V * c->yuv2rgb_v2g_coeff + U * c->yuv2rgb_u2g_coeff;
+            B =                            U * c->yuv2rgb_u2b_coeff;
+
+            output_pixel(&dest[0], av_clip_uintp2(R_B + Y1, 30) >> 14);
+            output_pixel(&dest[1], av_clip_uintp2(  G + Y1, 30) >> 14);
+            output_pixel(&dest[2], av_clip_uintp2(B_R + Y1, 30) >> 14);
+            output_pixel(&dest[3], av_clip_uintp2(R_B + Y2, 30) >> 14);
+            output_pixel(&dest[4], av_clip_uintp2(  G + Y2, 30) >> 14);
+            output_pixel(&dest[5], av_clip_uintp2(B_R + Y2, 30) >> 14);
+            dest += 6;
         }
     }
 }
 
+#undef output_pixel
 #undef r_b
 #undef b_r
 
-YUV2PACKEDWRAPPER(yuv2, rgb48, rgb48be, PIX_FMT_RGB48BE);
-//YUV2PACKEDWRAPPER(yuv2, rgb48, rgb48le, PIX_FMT_RGB48LE);
-YUV2PACKEDWRAPPER(yuv2, rgb48, bgr48be, PIX_FMT_BGR48BE);
-//YUV2PACKEDWRAPPER(yuv2, rgb48, bgr48le, PIX_FMT_BGR48LE);
+YUV2PACKED16WRAPPER(yuv2, rgb48, rgb48be, PIX_FMT_RGB48BE);
+YUV2PACKED16WRAPPER(yuv2, rgb48, rgb48le, PIX_FMT_RGB48LE);
+YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48be, PIX_FMT_BGR48BE);
+YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48le, PIX_FMT_BGR48LE);
 
 static av_always_inline void
 yuv2rgb_write(uint8_t *_dest, int i, int Y1, int Y2,
@@ -1025,7 +1112,7 @@ yuv2rgb_X_c_template(SwsContext *c, const int16_t *lumFilter,
             U  = av_clip_uint8(U);
             V  = av_clip_uint8(V);
         }
-        if (hasAlpha) {\
+        if (hasAlpha) {
             A1 = 1 << 18;
             A2 = 1 << 18;
             for (j = 0; j < lumFilterSize; j++) {
@@ -1318,50 +1405,50 @@ static av_always_inline void fillPlane(uint8_t* plane, int stride,
 #define b ((origin == PIX_FMT_BGR48BE || origin == PIX_FMT_BGR48LE) ? r_b : b_r)
 
 static av_always_inline void
-rgb48ToY_c_template(uint8_t *dst, const uint8_t *src, int width,
+rgb48ToY_c_template(uint16_t *dst, const uint16_t *src, int width,
                     enum PixelFormat origin)
 {
     int i;
     for (i = 0; i < width; i++) {
-        int r_b = input_pixel(&src[i*6+0]) >> 8;
-        int   g = input_pixel(&src[i*6+2]) >> 8;
-        int b_r = input_pixel(&src[i*6+4]) >> 8;
+        unsigned int r_b = input_pixel(&src[i*3+0]);
+        unsigned int   g = input_pixel(&src[i*3+1]);
+        unsigned int b_r = input_pixel(&src[i*3+2]);
 
-        dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+        dst[i] = (RY*r + GY*g + BY*b + (0x2001<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
     }
 }
 
 static av_always_inline void
-rgb48ToUV_c_template(uint8_t *dstU, uint8_t *dstV,
-                    const uint8_t *src1, const uint8_t *src2,
+rgb48ToUV_c_template(uint16_t *dstU, uint16_t *dstV,
+                    const uint16_t *src1, const uint16_t *src2,
                     int width, enum PixelFormat origin)
 {
     int i;
     assert(src1==src2);
     for (i = 0; i < width; i++) {
-        int r_b = input_pixel(&src1[i*6+0]) >> 8;
-        int   g = input_pixel(&src1[i*6+2]) >> 8;
-        int b_r = input_pixel(&src1[i*6+4]) >> 8;
+        int r_b = input_pixel(&src1[i*3+0]);
+        int   g = input_pixel(&src1[i*3+1]);
+        int b_r = input_pixel(&src1[i*3+2]);
 
-        dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
-        dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+        dstU[i] = (RU*r + GU*g + BU*b + (0x10001<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+        dstV[i] = (RV*r + GV*g + BV*b + (0x10001<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
     }
 }
 
 static av_always_inline void
-rgb48ToUV_half_c_template(uint8_t *dstU, uint8_t *dstV,
-                          const uint8_t *src1, const uint8_t *src2,
+rgb48ToUV_half_c_template(uint16_t *dstU, uint16_t *dstV,
+                          const uint16_t *src1, const uint16_t *src2,
                           int width, enum PixelFormat origin)
 {
     int i;
     assert(src1==src2);
     for (i = 0; i < width; i++) {
-        int r_b = (input_pixel(&src1[12*i + 0]) >> 8) + (input_pixel(&src1[12*i + 6]) >> 8);
-        int   g = (input_pixel(&src1[12*i + 2]) >> 8) + (input_pixel(&src1[12*i + 8]) >> 8);
-        int b_r = (input_pixel(&src1[12*i + 4]) >> 8) + (input_pixel(&src1[12*i + 10]) >> 8);
+        int r_b = (input_pixel(&src1[6 * i + 0]) + input_pixel(&src1[6 * i + 3]) + 1) >> 1;
+        int   g = (input_pixel(&src1[6 * i + 1]) + input_pixel(&src1[6 * i + 4]) + 1) >> 1;
+        int b_r = (input_pixel(&src1[6 * i + 2]) + input_pixel(&src1[6 * i + 5]) + 1) >> 1;
 
-        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
-        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
+        dstU[i]= (RU*r + GU*g + BU*b + (0x10001<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
+        dstV[i]= (RV*r + GV*g + BV*b + (0x10001<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
     }
 }
 
@@ -1370,23 +1457,31 @@ rgb48ToUV_half_c_template(uint8_t *dstU, uint8_t *dstV,
 #undef input_pixel
 
 #define rgb48funcs(pattern, BE_LE, origin) \
-static void pattern ## 48 ## BE_LE ## ToY_c(uint8_t *dst, const uint8_t *src, \
+static void pattern ## 48 ## BE_LE ## ToY_c(uint8_t *_dst, const uint8_t *_src, \
                                     int width, uint32_t *unused) \
 { \
+    const uint16_t *src = (const uint16_t *) _src; \
+    uint16_t *dst = (uint16_t *) _dst; \
     rgb48ToY_c_template(dst, src, width, origin); \
 } \
  \
-static void pattern ## 48 ## BE_LE ## ToUV_c(uint8_t *dstU, uint8_t *dstV, \
-                                    const uint8_t *src1, const uint8_t *src2, \
+static void pattern ## 48 ## BE_LE ## ToUV_c(uint8_t *_dstU, uint8_t *_dstV, \
+                                    const uint8_t *_src1, const uint8_t *_src2, \
                                     int width, uint32_t *unused) \
 { \
+    const uint16_t *src1 = (const uint16_t *) _src1, \
+                   *src2 = (const uint16_t *) _src2; \
+    uint16_t *dstU = (uint16_t *) _dstU, *dstV = (uint16_t *) _dstV; \
     rgb48ToUV_c_template(dstU, dstV, src1, src2, width, origin); \
 } \
  \
-static void pattern ## 48 ## BE_LE ## ToUV_half_c(uint8_t *dstU, uint8_t *dstV, \
-                                    const uint8_t *src1, const uint8_t *src2, \
+static void pattern ## 48 ## BE_LE ## ToUV_half_c(uint8_t *_dstU, uint8_t *_dstV, \
+                                    const uint8_t *_src1, const uint8_t *_src2, \
                                     int width, uint32_t *unused) \
 { \
+    const uint16_t *src1 = (const uint16_t *) _src1, \
+                   *src2 = (const uint16_t *) _src2; \
+    uint16_t *dstU = (uint16_t *) _dstU, *dstV = (uint16_t *) _dstV; \
     rgb48ToUV_half_c_template(dstU, dstV, src1, src2, width, origin); \
 }
 
@@ -1601,13 +1696,26 @@ static void yuy2ToUV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1,
     assert(src1 == src2);
 }
 
-static void LEToUV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1,
-                     const uint8_t *src2, int width, uint32_t *unused)
+static void bswap16Y_c(uint8_t *_dst, const uint8_t *_src, int width, uint32_t *unused)
 {
     int i;
+    const uint16_t *src = (const uint16_t *) _src;
+    uint16_t *dst = (uint16_t *) _dst;
     for (i=0; i<width; i++) {
-        dstU[i]= src1[2*i + 1];
-        dstV[i]= src2[2*i + 1];
+        dst[i] = av_bswap16(src[i]);
+    }
+}
+
+static void bswap16UV_c(uint8_t *_dstU, uint8_t *_dstV, const uint8_t *_src1,
+                        const uint8_t *_src2, int width, uint32_t *unused)
+{
+    int i;
+    const uint16_t *src1 = (const uint16_t *) _src1,
+                   *src2 = (const uint16_t *) _src2;
+    uint16_t *dstU = (uint16_t *) _dstU, *dstV = (uint16_t *) _dstV;
+    for (i=0; i<width; i++) {
+        dstU[i] = av_bswap16(src1[i]);
+        dstV[i] = av_bswap16(src2[i]);
     }
 }
 
@@ -1632,16 +1740,6 @@ static void uyvyToUV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1,
     assert(src1 == src2);
 }
 
-static void BEToUV_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1,
-                     const uint8_t *src2, int width, uint32_t *unused)
-{
-    int i;
-    for (i=0; i<width; i++) {
-        dstU[i]= src1[2*i];
-        dstV[i]= src2[2*i];
-    }
-}
-
 static av_always_inline void nvXXtoUV_c(uint8_t *dst1, uint8_t *dst2,
                                         const uint8_t *src, int width)
 {
@@ -1670,43 +1768,49 @@ static void nv21ToUV_c(uint8_t *dstU, uint8_t *dstV,
 
 // FIXME Maybe dither instead.
 static av_always_inline void
-yuv9_OR_10ToUV_c_template(uint8_t *dstU, uint8_t *dstV,
-                          const uint8_t *_srcU, const uint8_t *_srcV,
+yuv9_OR_10ToUV_c_template(uint16_t *dstU, uint16_t *dstV,
+                          const uint16_t *srcU, const uint16_t *srcV,
                           int width, enum PixelFormat origin, int depth)
 {
     int i;
-    const uint16_t *srcU = (const uint16_t *) _srcU;
-    const uint16_t *srcV = (const uint16_t *) _srcV;
 
     for (i = 0; i < width; i++) {
-        dstU[i] = input_pixel(&srcU[i]) >> (depth - 8);
-        dstV[i] = input_pixel(&srcV[i]) >> (depth - 8);
+        int upx = input_pixel(&srcU[i]);
+        int vpx = input_pixel(&srcV[i]);
+        dstU[i] =  (upx << (16 - depth)) | (upx >> (2 * depth - 16));
+        dstV[i] =  (vpx << (16 - depth)) | (vpx >> (2 * depth - 16));
     }
 }
 
 static av_always_inline void
-yuv9_or_10ToY_c_template(uint8_t *dstY, const uint8_t *_srcY,
+yuv9_or_10ToY_c_template(uint16_t *dstY, const uint16_t *srcY,
                          int width, enum PixelFormat origin, int depth)
 {
     int i;
-    const uint16_t *srcY = (const uint16_t*)_srcY;
 
-    for (i = 0; i < width; i++)
-        dstY[i] = input_pixel(&srcY[i]) >> (depth - 8);
+    for (i = 0; i < width; i++) {
+        int px = input_pixel(&srcY[i]);
+        dstY[i] =  (px << (16 - depth)) | (px >> (2 * depth - 16));
+    }
 }
 
 #undef input_pixel
 
 #define YUV_NBPS(depth, BE_LE, origin) \
-static void BE_LE ## depth ## ToUV_c(uint8_t *dstU, uint8_t *dstV, \
-                                     const uint8_t *srcU, const uint8_t *srcV, \
+static void BE_LE ## depth ## ToUV_c(uint8_t *_dstU, uint8_t *_dstV, \
+                                     const uint8_t *_srcU, const uint8_t *_srcV, \
                                      int width, uint32_t *unused) \
 { \
+    uint16_t *dstU = (uint16_t *) _dstU, *dstV = (uint16_t *) _dstV; \
+    const uint16_t *srcU = (const uint16_t *) _srcU, \
+                   *srcV = (const uint16_t *) _srcV; \
     yuv9_OR_10ToUV_c_template(dstU, dstV, srcU, srcV, width, origin, depth); \
 } \
-static void BE_LE ## depth ## ToY_c(uint8_t *dstY, const uint8_t *srcY, \
+static void BE_LE ## depth ## ToY_c(uint8_t *_dstY, const uint8_t *_srcY, \
                                     int width, uint32_t *unused) \
 { \
+    uint16_t *dstY = (uint16_t *) _dstY; \
+    const uint16_t *srcY = (const uint16_t *) _srcY; \
     yuv9_or_10ToY_c_template(dstY, srcY, width, origin, depth); \
 }
 
@@ -1801,6 +1905,27 @@ static void rgb24ToUV_half_c(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1,
     }
 }
 
+static void hScale16_c(int16_t *_dst, int dstW, const uint8_t *_src,
+                       const int16_t *filter,
+                       const int16_t *filterPos, int filterSize)
+{
+    int i;
+    int32_t *dst = (int32_t *) _dst;
+    const uint16_t *src = (const uint16_t *) _src;
+
+    for (i = 0; i < dstW; i++) {
+        int j;
+        int srcPos = filterPos[i];
+        unsigned int val = 0;
+
+        for (j = 0; j < filterSize; j++) {
+            val += src[srcPos + j] * filter[filterSize * i + j];
+        }
+        // filter=14 bit, input=16 bit, output=30 bit, >> 11 makes 19 bit
+        dst[i] = FFMIN(val >> 11, (1 << 19) - 1);
+    }
+}
+
 // bilinear / bicubic scaling
 static void hScale_c(int16_t *dst, int dstW, const uint8_t *src,
                      const int16_t *filter, const int16_t *filterPos,
@@ -1851,6 +1976,41 @@ static void lumRangeFromJpeg_c(int16_t *dst, int width)
         dst[i] = (dst[i]*14071 + 33561947)>>14;
 }
 
+static void chrRangeToJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
+{
+    int i;
+    int32_t *dstU = (int32_t *) _dstU;
+    int32_t *dstV = (int32_t *) _dstV;
+    for (i = 0; i < width; i++) {
+        dstU[i] = (FFMIN(dstU[i],30775)*4663 - 9289992)>>12; //-264
+        dstV[i] = (FFMIN(dstV[i],30775)*4663 - 9289992)>>12; //-264
+    }
+}
+static void chrRangeFromJpeg16_c(int16_t *_dstU, int16_t *_dstV, int width)
+{
+    int i;
+    int32_t *dstU = (int32_t *) _dstU;
+    int32_t *dstV = (int32_t *) _dstV;
+    for (i = 0; i < width; i++) {
+        dstU[i] = (dstU[i]*1799 + 4081085)>>11; //1469
+        dstV[i] = (dstV[i]*1799 + 4081085)>>11; //1469
+    }
+}
+static void lumRangeToJpeg16_c(int16_t *_dst, int width)
+{
+    int i;
+    int32_t *dst = (int32_t *) _dst;
+    for (i = 0; i < width; i++)
+        dst[i] = (FFMIN(dst[i],30189)*19077 - 39057361)>>14;
+}
+static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
+{
+    int i;
+    int32_t *dst = (int32_t *) _dst;
+    for (i = 0; i < width; i++)
+        dst[i] = (dst[i]*14071 + 33561947)>>14;
+}
+
 static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
                            const uint8_t *src, int srcW, int xInc)
 {
@@ -1864,8 +2024,25 @@ static void hyscale_fast_c(SwsContext *c, int16_t *dst, int dstWidth,
     }
 }
 
+static void scale8To16Rv_c(uint16_t *_dst, const uint8_t *src, int len)
+{
+    int i;
+    uint8_t *dst = (uint8_t *) _dst;
+    for (i = len - 1; i >= 0; i--) {
+        dst[i * 2] = dst[i * 2 + 1] = src[i];
+    }
+}
+
+static void scale19To15Fw_c(int16_t *dst, const int32_t *src, int len)
+{
+    int i;
+    for (i = 0; i < len; i++) {
+        dst[i] = src[i] >> 4;
+    }
+}
+
 // *** horizontal scale Y line to temp buffer
-static av_always_inline void hyscale(SwsContext *c, uint16_t *dst, int dstWidth,
+static av_always_inline void hyscale(SwsContext *c, int16_t *dst, int dstWidth,
                                      const uint8_t *src, int srcW, int xInc,
                                      const int16_t *hLumFilter,
                                      const int16_t *hLumFilterPos, int hLumFilterSize,
@@ -1880,6 +2057,11 @@ static av_always_inline void hyscale(SwsContext *c, uint16_t *dst, int dstWidth,
         src= formatConvBuffer;
     }
 
+    if (av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1 < 8 && c->scalingBpp == 16) {
+        c->scale8To16Rv((uint16_t *) formatConvBuffer, src, srcW);
+        src = formatConvBuffer;
+    }
+
     if (!c->hyscale_fast) {
         c->hScale(dst, dstWidth, src, hLumFilter, hLumFilterPos, hLumFilterSize);
     } else { // fast bilinear upscale / crap downscale
@@ -1888,6 +2070,10 @@ static av_always_inline void hyscale(SwsContext *c, uint16_t *dst, int dstWidth,
 
     if (convertRange)
         convertRange(dst, dstWidth);
+
+    if (av_pix_fmt_descriptors[c->dstFormat].comp[0].depth_minus1 < 8 && c->scalingBpp == 16) {
+        c->scale19To15Fw(dst, (int32_t *) dst, dstWidth);
+    }
 }
 
 static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
@@ -1905,19 +2091,27 @@ static void hcscale_fast_c(SwsContext *c, int16_t *dst1, int16_t *dst2,
     }
 }
 
-static av_always_inline void hcscale(SwsContext *c, uint16_t *dst1, uint16_t *dst2, int dstWidth,
+static av_always_inline void hcscale(SwsContext *c, int16_t *dst1, int16_t *dst2, int dstWidth,
                                      const uint8_t *src1, const uint8_t *src2,
                                      int srcW, int xInc, const int16_t *hChrFilter,
                                      const int16_t *hChrFilterPos, int hChrFilterSize,
                                      uint8_t *formatConvBuffer, uint32_t *pal)
 {
     if (c->chrToYV12) {
-        uint8_t *buf2 = formatConvBuffer + FFALIGN(srcW, 16);
+        uint8_t *buf2 = formatConvBuffer + FFALIGN(srcW * c->scalingBpp >> 3, 16);
         c->chrToYV12(formatConvBuffer, buf2, src1, src2, srcW, pal);
         src1= formatConvBuffer;
         src2= buf2;
     }
 
+    if (av_pix_fmt_descriptors[c->srcFormat].comp[0].depth_minus1 < 8 && c->scalingBpp == 16) {
+        uint8_t *buf2 = (formatConvBuffer + FFALIGN(srcW * 2, 16));
+        c->scale8To16Rv((uint16_t *) formatConvBuffer, src1, srcW);
+        c->scale8To16Rv((uint16_t *) buf2,             src2, srcW);
+        src1 = formatConvBuffer;
+        src2 = buf2;
+    }
+
     if (!c->hcscale_fast) {
         c->hScale(dst1, dstWidth, src1, hChrFilter, hChrFilterPos, hChrFilterSize);
         c->hScale(dst2, dstWidth, src2, hChrFilter, hChrFilterPos, hChrFilterSize);
@@ -1927,6 +2121,11 @@ static av_always_inline void hcscale(SwsContext *c, uint16_t *dst1, uint16_t *ds
 
     if (c->chrConvertRange)
         c->chrConvertRange(dst1, dst2, dstWidth);
+
+    if (av_pix_fmt_descriptors[c->dstFormat].comp[0].depth_minus1 < 8 && c->scalingBpp == 16) {
+        c->scale19To15Fw(dst1, (int32_t *) dst1, dstWidth);
+        c->scale19To15Fw(dst2, (int32_t *) dst2, dstWidth);
+    }
 }
 
 static av_always_inline void
@@ -2049,20 +2248,20 @@ find_c_packed_planar_out_funcs(SwsContext *c,
             *yuv2packedX = yuv2uyvy422_X_c;
             break;
         case PIX_FMT_RGB48LE:
-            //*yuv2packed1 = yuv2rgb48le_1_c;
-            //*yuv2packed2 = yuv2rgb48le_2_c;
-            //*yuv2packedX = yuv2rgb48le_X_c;
-            //break;
+            *yuv2packed1 = yuv2rgb48le_1_c;
+            *yuv2packed2 = yuv2rgb48le_2_c;
+            *yuv2packedX = yuv2rgb48le_X_c;
+            break;
         case PIX_FMT_RGB48BE:
             *yuv2packed1 = yuv2rgb48be_1_c;
             *yuv2packed2 = yuv2rgb48be_2_c;
             *yuv2packedX = yuv2rgb48be_X_c;
             break;
         case PIX_FMT_BGR48LE:
-            //*yuv2packed1 = yuv2bgr48le_1_c;
-            //*yuv2packed2 = yuv2bgr48le_2_c;
-            //*yuv2packedX = yuv2bgr48le_X_c;
-            //break;
+            *yuv2packed1 = yuv2bgr48le_1_c;
+            *yuv2packed2 = yuv2bgr48le_2_c;
+            *yuv2packedX = yuv2bgr48le_X_c;
+            break;
         case PIX_FMT_BGR48BE:
             *yuv2packed1 = yuv2bgr48be_1_c;
             *yuv2packed2 = yuv2bgr48be_2_c;
@@ -2435,13 +2634,6 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
                                    &c->yuv2packed1, &c->yuv2packed2,
                                    &c->yuv2packedX);
 
-    c->hScale       = hScale_c;
-
-    if (c->flags & SWS_FAST_BILINEAR) {
-        c->hyscale_fast = hyscale_fast_c;
-        c->hcscale_fast = hcscale_fast_c;
-    }
-
     c->chrToYV12 = NULL;
     switch(srcFormat) {
         case PIX_FMT_YUYV422  : c->chrToYV12 = yuy2ToUV_c; break;
@@ -2453,22 +2645,25 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
         case PIX_FMT_PAL8     :
         case PIX_FMT_BGR4_BYTE:
         case PIX_FMT_RGB4_BYTE: c->chrToYV12 = palToUV_c; break;
-        case PIX_FMT_YUV444P9BE:
-        case PIX_FMT_YUV420P9BE: c->chrToYV12 = BE9ToUV_c; break;
         case PIX_FMT_YUV444P9LE:
-        case PIX_FMT_YUV420P9LE: c->chrToYV12 = LE9ToUV_c; break;
-        case PIX_FMT_YUV444P10BE:
-        case PIX_FMT_YUV422P10BE:
-        case PIX_FMT_YUV420P10BE: c->chrToYV12 = BE10ToUV_c; break;
+        case PIX_FMT_YUV420P9LE:  c->chrToYV12 = LE9ToUV_c; break;
         case PIX_FMT_YUV422P10LE:
         case PIX_FMT_YUV444P10LE:
         case PIX_FMT_YUV420P10LE: c->chrToYV12 = LE10ToUV_c; break;
-        case PIX_FMT_YUV420P16BE:
-        case PIX_FMT_YUV422P16BE:
-        case PIX_FMT_YUV444P16BE: c->chrToYV12 = BEToUV_c; break;
+        case PIX_FMT_YUV444P9BE:
+        case PIX_FMT_YUV420P9BE:  c->chrToYV12 = BE9ToUV_c; break;
+        case PIX_FMT_YUV444P10BE:
+        case PIX_FMT_YUV422P10BE:
+        case PIX_FMT_YUV420P10BE: c->chrToYV12 = BE10ToUV_c; break;
+#if HAVE_BIGENDIAN
         case PIX_FMT_YUV420P16LE:
         case PIX_FMT_YUV422P16LE:
-        case PIX_FMT_YUV444P16LE: c->chrToYV12 = LEToUV_c; break;
+        case PIX_FMT_YUV444P16LE: c->chrToYV12 = bswap16UV_c; break;
+#else
+        case PIX_FMT_YUV420P16BE:
+        case PIX_FMT_YUV422P16BE:
+        case PIX_FMT_YUV444P16BE: c->chrToYV12 = bswap16UV_c; break;
+#endif
     }
     if (c->chrSrcHSubSample) {
         switch(srcFormat) {
@@ -2517,27 +2712,30 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
     c->lumToYV12 = NULL;
     c->alpToYV12 = NULL;
     switch (srcFormat) {
-    case PIX_FMT_YUV444P9BE:
-    case PIX_FMT_YUV420P9BE: c->lumToYV12 = BE9ToY_c; break;
     case PIX_FMT_YUV444P9LE:
-    case PIX_FMT_YUV420P9LE: c->lumToYV12 = LE9ToY_c; break;
-    case PIX_FMT_YUV444P10BE:
-    case PIX_FMT_YUV422P10BE:
-    case PIX_FMT_YUV420P10BE: c->lumToYV12 = BE10ToY_c; break;
+    case PIX_FMT_YUV420P9LE:  c->lumToYV12 = LE9ToY_c; break;
     case PIX_FMT_YUV444P10LE:
     case PIX_FMT_YUV422P10LE:
     case PIX_FMT_YUV420P10LE: c->lumToYV12 = LE10ToY_c; break;
-    case PIX_FMT_YUYV422  :
-    case PIX_FMT_YUV420P16BE:
-    case PIX_FMT_YUV422P16BE:
-    case PIX_FMT_YUV444P16BE:
-    case PIX_FMT_Y400A    :
-    case PIX_FMT_GRAY16BE : c->lumToYV12 = yuy2ToY_c; break;
-    case PIX_FMT_UYVY422  :
+    case PIX_FMT_YUV444P9BE:
+    case PIX_FMT_YUV420P9BE:  c->lumToYV12 = BE9ToY_c; break;
+    case PIX_FMT_YUV444P10BE:
+    case PIX_FMT_YUV422P10BE:
+    case PIX_FMT_YUV420P10BE: c->lumToYV12 = BE10ToY_c; break;
+#if HAVE_BIGENDIAN
     case PIX_FMT_YUV420P16LE:
     case PIX_FMT_YUV422P16LE:
     case PIX_FMT_YUV444P16LE:
-    case PIX_FMT_GRAY16LE : c->lumToYV12 = uyvyToY_c;    break;
+    case PIX_FMT_GRAY16LE: c->lumToYV12 = bswap16Y_c; break;
+#else
+    case PIX_FMT_YUV420P16BE:
+    case PIX_FMT_YUV422P16BE:
+    case PIX_FMT_YUV444P16BE:
+    case PIX_FMT_GRAY16BE: c->lumToYV12 = bswap16Y_c; break;
+#endif
+    case PIX_FMT_YUYV422  :
+    case PIX_FMT_Y400A    : c->lumToYV12 = yuy2ToY_c; break;
+    case PIX_FMT_UYVY422  : c->lumToYV12 = uyvyToY_c;    break;
     case PIX_FMT_BGR24    : c->lumToYV12 = bgr24ToY_c;   break;
     case PIX_FMT_BGR565LE : c->lumToYV12 = bgr16leToY_c; break;
     case PIX_FMT_BGR565BE : c->lumToYV12 = bgr16beToY_c; break;
@@ -2574,6 +2772,13 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
         }
     }
 
+    if (c->scalingBpp == 8) {
+    c->hScale       = hScale_c;
+    if (c->flags & SWS_FAST_BILINEAR) {
+        c->hyscale_fast = hyscale_fast_c;
+        c->hcscale_fast = hcscale_fast_c;
+    }
+
     if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
         if (c->srcRange) {
             c->lumConvertRange = lumRangeFromJpeg_c;
@@ -2583,6 +2788,21 @@ static av_cold void sws_init_swScale_c(SwsContext *c)
             c->chrConvertRange = chrRangeToJpeg_c;
         }
     }
+    } else {
+        c->hScale = hScale16_c;
+        c->scale19To15Fw = scale19To15Fw_c;
+        c->scale8To16Rv  = scale8To16Rv_c;
+
+        if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
+            if (c->srcRange) {
+                c->lumConvertRange = lumRangeFromJpeg16_c;
+                c->chrConvertRange = chrRangeFromJpeg16_c;
+            } else {
+                c->lumConvertRange = lumRangeToJpeg16_c;
+                c->chrConvertRange = chrRangeToJpeg16_c;
+            }
+        }
+    }
 
     if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
           srcFormat == PIX_FMT_MONOBLACK || srcFormat == PIX_FMT_MONOWHITE))