diff --git a/configure b/configure
index d4232f5..b2fb960 100755
--- a/configure
+++ b/configure
@@ -2115,6 +2115,7 @@ CONFIG_EXTRA="
     libx262
     llauddsp
     llviddsp
+    llvidencdsp
     lpc
     lzf
     me_cmp
@@ -2366,7 +2367,7 @@ amv_decoder_select="sp5x_decoder exif"
 amv_encoder_select="aandcttables jpegtables mpegvideoenc"
 ape_decoder_select="bswapdsp llauddsp"
 apng_decoder_select="zlib"
-apng_encoder_select="huffyuvencdsp zlib"
+apng_encoder_select="llvidencdsp zlib"
 asv1_decoder_select="blockdsp bswapdsp idctdsp"
 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
 asv2_decoder_select="blockdsp bswapdsp idctdsp"
@@ -2430,7 +2431,7 @@ hap_encoder_deps="libsnappy"
 hap_encoder_select="texturedspenc"
 hevc_decoder_select="bswapdsp cabac golomb videodsp"
 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
-huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
+huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llvidencdsp"
 iac_decoder_select="imc_decoder"
 imc_decoder_select="bswapdsp fft mdct sinewin"
 indeo3_decoder_select="hpeldsp"
@@ -2491,7 +2492,7 @@ on2avc_decoder_select="mdct"
 opus_decoder_deps="swresample"
 opus_decoder_select="imdct15"
 png_decoder_select="zlib"
-png_encoder_select="huffyuvencdsp zlib"
+png_encoder_select="llvidencdsp zlib"
 prores_decoder_select="blockdsp idctdsp"
 prores_encoder_select="fdctdsp"
 qcelp_decoder_select="lsp"
@@ -2534,7 +2535,7 @@ tscc_decoder_select="zlib"
 twinvq_decoder_select="mdct lsp sinewin"
 txd_decoder_select="texturedsp"
 utvideo_decoder_select="bswapdsp llviddsp"
-utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
+utvideo_encoder_select="bswapdsp huffman llvidencdsp"
 vble_decoder_select="llviddsp"
 vc1_decoder_select="blockdsp h263_decoder h264qpel intrax8 mpegvideo vc1dsp"
 vc1_qsv_decoder_deps="libmfx"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 44e416e..dee9d49 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -91,6 +91,7 @@ OBJS-$(CONFIG_JPEGTABLES)              += jpegtables.o
 OBJS-$(CONFIG_LIBXVID)                 += libxvid_rc.o
 OBJS-$(CONFIG_LLAUDDSP)                += lossless_audiodsp.o
 OBJS-$(CONFIG_LLVIDDSP)                += lossless_videodsp.o
+OBJS-$(CONFIG_LLVIDENCDSP)             += lossless_videoencdsp.o
 OBJS-$(CONFIG_LPC)                     += lpc.o
 OBJS-$(CONFIG_LSP)                     += lsp.o
 OBJS-$(CONFIG_LZF)                     += lzf.o
diff --git a/libavcodec/huffyuv.h b/libavcodec/huffyuv.h
index c18247e..83309d4 100644
--- a/libavcodec/huffyuv.h
+++ b/libavcodec/huffyuv.h
@@ -38,6 +38,7 @@
 #include "huffyuvencdsp.h"
 #include "put_bits.h"
 #include "lossless_videodsp.h"
+#include "lossless_videoencdsp.h"
 
 #define VLC_BITS 12
 
@@ -89,6 +90,7 @@ typedef struct HYuvContext {
     HuffYUVDSPContext hdsp;
     HuffYUVEncDSPContext hencdsp;
     LLVidDSPContext llviddsp;
+    LLVidEncDSPContext llvidencdsp;
     int non_determ; // non-deterministic, multi-threaded encoder allowed
 } HYuvContext;
 
diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
index f5bc99f..89639b7 100644
--- a/libavcodec/huffyuvenc.c
+++ b/libavcodec/huffyuvenc.c
@@ -33,6 +33,7 @@
 #include "huffman.h"
 #include "huffyuvencdsp.h"
 #include "internal.h"
+#include "lossless_videoencdsp.h"
 #include "put_bits.h"
 #include "libavutil/opt.h"
 #include "libavutil/pixdesc.h"
@@ -41,7 +42,7 @@ static inline void diff_bytes(HYuvContext *s, uint8_t *dst,
                               const uint8_t *src0, const uint8_t *src1, int w)
 {
     if (s->bps <= 8) {
-        s->hencdsp.diff_bytes(dst, src0, src1, w);
+        s->llvidencdsp.diff_bytes(dst, src0, src1, w);
     } else {
         s->hencdsp.diff_int16((uint16_t *)dst, (const uint16_t *)src0, (const uint16_t *)src1, s->n - 1, w);
     }
@@ -65,7 +66,7 @@ static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst,
                 dst[i] = temp - left;
                 left   = temp;
             }
-            s->hencdsp.diff_bytes(dst + 32, src + 32, src + 31, w - 32);
+            s->llvidencdsp.diff_bytes(dst + 32, src + 32, src + 31, w - 32);
             return src[w-1];
         }
     } else {
@@ -117,7 +118,7 @@ static inline void sub_left_prediction_bgr32(HYuvContext *s, uint8_t *dst,
         a = at;
     }
 
-    s->hencdsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
+    s->llvidencdsp.diff_bytes(dst + 16, src + 16, src + 12, w * 4 - 16);
 
     *red   = src[(w - 1) * 4 + R];
     *green = src[(w - 1) * 4 + G];
@@ -146,7 +147,7 @@ static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst,
         b = bt;
     }
 
-    s->hencdsp.diff_bytes(dst + 48, src + 48, src + 48 - 3, w * 3 - 48);
+    s->llvidencdsp.diff_bytes(dst + 48, src + 48, src + 48 - 3, w * 3 - 48);
 
     *red   = src[(w - 1) * 3 + 0];
     *green = src[(w - 1) * 3 + 1];
@@ -156,7 +157,7 @@ static inline void sub_left_prediction_rgb24(HYuvContext *s, uint8_t *dst,
 static void sub_median_prediction(HYuvContext *s, uint8_t *dst, const uint8_t *src1, const uint8_t *src2, int w, int *left, int *left_top)
 {
     if (s->bps <= 8) {
-        s->hencdsp.sub_hfyu_median_pred(dst, src1, src2, w , left, left_top);
+        s->llvidencdsp.sub_median_pred(dst, src1, src2, w , left, left_top);
     } else {
         s->hencdsp.sub_hfyu_median_pred_int16((uint16_t *)dst, (const uint16_t *)src1, (const uint16_t *)src2, s->n - 1, w , left, left_top);
     }
@@ -218,6 +219,7 @@ static av_cold int encode_init(AVCodecContext *avctx)
 
     ff_huffyuv_common_init(avctx);
     ff_huffyuvencdsp_init(&s->hencdsp, avctx);
+    ff_llvidencdsp_init(&s->llvidencdsp);
 
     avctx->extradata = av_mallocz(3*MAX_N + 4);
     if (s->flags&AV_CODEC_FLAG_PASS1) {
@@ -823,9 +825,9 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
             lefttopy = p->data[0][3];
             lefttopu = p->data[1][1];
             lefttopv = p->data[2][1];
-            s->hencdsp.sub_hfyu_median_pred(s->temp[0], p->data[0] + 4, p->data[0] + fake_ystride + 4, width  - 4, &lefty, &lefttopy);
-            s->hencdsp.sub_hfyu_median_pred(s->temp[1], p->data[1] + 2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu);
-            s->hencdsp.sub_hfyu_median_pred(s->temp[2], p->data[2] + 2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv);
+            s->llvidencdsp.sub_median_pred(s->temp[0], p->data[0] + 4, p->data[0] + fake_ystride + 4, width  - 4, &lefty, &lefttopy);
+            s->llvidencdsp.sub_median_pred(s->temp[1], p->data[1] + 2, p->data[1] + fake_ustride + 2, width2 - 2, &leftu, &lefttopu);
+            s->llvidencdsp.sub_median_pred(s->temp[2], p->data[2] + 2, p->data[2] + fake_vstride + 2, width2 - 2, &leftv, &lefttopv);
             encode_422_bitstream(s, 0, width - 4);
             y++; cy++;
 
@@ -835,7 +837,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                 if (s->bitstream_bpp == 12) {
                     while (2 * cy > y) {
                         ydst = p->data[0] + p->linesize[0] * y;
-                        s->hencdsp.sub_hfyu_median_pred(s->temp[0], ydst - fake_ystride, ydst, width, &lefty, &lefttopy);
+                        s->llvidencdsp.sub_median_pred(s->temp[0], ydst - fake_ystride, ydst, width, &lefty, &lefttopy);
                         encode_gray_bitstream(s, width);
                         y++;
                     }
@@ -845,9 +847,9 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                 udst = p->data[1] + p->linesize[1] * cy;
                 vdst = p->data[2] + p->linesize[2] * cy;
 
-                s->hencdsp.sub_hfyu_median_pred(s->temp[0], ydst - fake_ystride, ydst, width,  &lefty, &lefttopy);
-                s->hencdsp.sub_hfyu_median_pred(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
-                s->hencdsp.sub_hfyu_median_pred(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
+                s->llvidencdsp.sub_median_pred(s->temp[0], ydst - fake_ystride, ydst, width,  &lefty, &lefttopy);
+                s->llvidencdsp.sub_median_pred(s->temp[1], udst - fake_ustride, udst, width2, &leftu, &lefttopu);
+                s->llvidencdsp.sub_median_pred(s->temp[2], vdst - fake_vstride, vdst, width2, &leftv, &lefttopv);
 
                 encode_422_bitstream(s, 0, width);
             }
@@ -860,7 +862,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                     ydst = p->data[0] + p->linesize[0] * y;
 
                     if (s->predictor == PLANE && s->interlaced < y) {
-                        s->hencdsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
+                        s->llvidencdsp.diff_bytes(s->temp[1], ydst, ydst - fake_ystride, width);
 
                         lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
                     } else {
@@ -876,9 +878,9 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
                 vdst = p->data[2] + p->linesize[2] * cy;
 
                 if (s->predictor == PLANE && s->interlaced < cy) {
-                    s->hencdsp.diff_bytes(s->temp[1],          ydst, ydst - fake_ystride, width);
-                    s->hencdsp.diff_bytes(s->temp[2],          udst, udst - fake_ustride, width2);
-                    s->hencdsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2);
+                    s->llvidencdsp.diff_bytes(s->temp[1],          ydst, ydst - fake_ystride, width);
+                    s->llvidencdsp.diff_bytes(s->temp[2],          udst, udst - fake_ustride, width2);
+                    s->llvidencdsp.diff_bytes(s->temp[2] + width2, vdst, vdst - fake_vstride, width2);
 
                     lefty = sub_left_prediction(s, s->temp[0], s->temp[1], width , lefty);
                     leftu = sub_left_prediction(s, s->temp[1], s->temp[2], width2, leftu);
@@ -911,7 +913,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         for (y = 1; y < s->height; y++) {
             uint8_t *dst = data + y*stride;
             if (s->predictor == PLANE && s->interlaced < y) {
-                s->hencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
+                s->llvidencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride, width * 4);
                 sub_left_prediction_bgr32(s, s->temp[0], s->temp[1], width,
                                           &leftr, &leftg, &leftb, &lefta);
             } else {
@@ -939,7 +941,7 @@ static int encode_frame(AVCodecContext *avctx, AVPacket *pkt,
         for (y = 1; y < s->height; y++) {
             uint8_t *dst = data + y * stride;
             if (s->predictor == PLANE && s->interlaced < y) {
-                s->hencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride,
+                s->llvidencdsp.diff_bytes(s->temp[1], dst, dst - fake_stride,
                                       width * 3);
                 sub_left_prediction_rgb24(s, s->temp[0], s->temp[1], width,
                                           &leftr, &leftg, &leftb);
diff --git a/libavcodec/huffyuvencdsp.c b/libavcodec/huffyuvencdsp.c
index f051021..7edcce8 100644
--- a/libavcodec/huffyuvencdsp.c
+++ b/libavcodec/huffyuvencdsp.c
@@ -21,38 +21,6 @@
 #include "huffyuvencdsp.h"
 #include "mathops.h"
 
-// 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size
-#define pb_7f (~0UL / 255 * 0x7f)
-#define pb_80 (~0UL / 255 * 0x80)
-
-static void diff_bytes_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, intptr_t w)
-{
-    long i;
-
-#if !HAVE_FAST_UNALIGNED
-    if (((long)src1 | (long)src2) & (sizeof(long) - 1)) {
-        for (i = 0; i + 7 < w; i += 8) {
-            dst[i + 0] = src1[i + 0] - src2[i + 0];
-            dst[i + 1] = src1[i + 1] - src2[i + 1];
-            dst[i + 2] = src1[i + 2] - src2[i + 2];
-            dst[i + 3] = src1[i + 3] - src2[i + 3];
-            dst[i + 4] = src1[i + 4] - src2[i + 4];
-            dst[i + 5] = src1[i + 5] - src2[i + 5];
-            dst[i + 6] = src1[i + 6] - src2[i + 6];
-            dst[i + 7] = src1[i + 7] - src2[i + 7];
-        }
-    } else
-#endif
-    for (i = 0; i <= w - (int) sizeof(long); i += sizeof(long)) {
-        long a = *(long *) (src1 + i);
-        long b = *(long *) (src2 + i);
-        *(long *) (dst + i) = ((a | pb_80) - (b & pb_7f)) ^
-                              ((a ^ b ^ pb_80) & pb_80);
-    }
-    for (; i < w; i++)
-        dst[i + 0] = src1[i + 0] - src2[i + 0];
-}
-
 static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w){
     long i;
 #if !HAVE_FAST_UNALIGNED
@@ -79,27 +47,6 @@ static void diff_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *sr
         dst[i] = (src1[i] - src2[i]) & mask;
 }
 
-static void sub_hfyu_median_pred_c(uint8_t *dst, const uint8_t *src1,
-                                   const uint8_t *src2, intptr_t w,
-                                   int *left, int *left_top)
-{
-    int i;
-    uint8_t l, lt;
-
-    l  = *left;
-    lt = *left_top;
-
-    for (i = 0; i < w; i++) {
-        const int pred = mid_pred(l, src1[i], (l + src1[i] - lt) & 0xFF);
-        lt     = src1[i];
-        l      = src2[i];
-        dst[i] = l - pred;
-    }
-
-    *left     = l;
-    *left_top = lt;
-}
-
 static void sub_hfyu_median_pred_int16_c(uint16_t *dst, const uint16_t *src1, const uint16_t *src2, unsigned mask, int w, int *left, int *left_top){
     int i;
     uint16_t l, lt;
@@ -120,9 +67,7 @@ static void sub_hfyu_median_pred_int16_c(uint16_t *dst, const uint16_t *src1, co
 
 av_cold void ff_huffyuvencdsp_init(HuffYUVEncDSPContext *c, AVCodecContext *avctx)
 {
-    c->diff_bytes           = diff_bytes_c;
     c->diff_int16           = diff_int16_c;
-    c->sub_hfyu_median_pred = sub_hfyu_median_pred_c;
     c->sub_hfyu_median_pred_int16 = sub_hfyu_median_pred_int16_c;
 
     if (ARCH_X86)
diff --git a/libavcodec/huffyuvencdsp.h b/libavcodec/huffyuvencdsp.h
index 141dad8..603f9c8 100644
--- a/libavcodec/huffyuvencdsp.h
+++ b/libavcodec/huffyuvencdsp.h
@@ -24,22 +24,11 @@
 #include "avcodec.h"
 
 typedef struct HuffYUVEncDSPContext {
-    void (*diff_bytes)(uint8_t *dst /* align 16 */,
-                       const uint8_t *src1 /* align 16 */,
-                       const uint8_t *src2 /* align 1 */,
-                       intptr_t w);
     void (*diff_int16)(uint16_t *dst /* align 16 */,
                        const uint16_t *src1 /* align 16 */,
                        const uint16_t *src2 /* align 1 */,
                        unsigned mask, int w);
 
-    /**
-     * Subtract HuffYUV's variant of median prediction.
-     * Note, this might read from src1[-1], src2[-1].
-     */
-    void (*sub_hfyu_median_pred)(uint8_t *dst, const uint8_t *src1,
-                                 const uint8_t *src2, intptr_t w,
-                                 int *left, int *left_top);
     void (*sub_hfyu_median_pred_int16)(uint16_t *dst, const uint16_t *src1,
                                        const uint16_t *src2, unsigned mask,
                                        int w, int *left, int *left_top);
diff --git a/libavcodec/lossless_videoencdsp.c b/libavcodec/lossless_videoencdsp.c
new file mode 100644
index 0000000..5cc4934
--- /dev/null
+++ b/libavcodec/lossless_videoencdsp.c
@@ -0,0 +1,84 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "config.h"
+#include "libavutil/attributes.h"
+#include "lossless_videoencdsp.h"
+#include "mathops.h"
+
+// 0x7f7f7f7f or 0x7f7f7f7f7f7f7f7f or whatever, depending on the cpu's native arithmetic size
+#define pb_7f (~0UL / 255 * 0x7f)
+#define pb_80 (~0UL / 255 * 0x80)
+
+static void diff_bytes_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2, intptr_t w)
+{
+    long i;
+
+#if !HAVE_FAST_UNALIGNED
+    if (((long)src1 | (long)src2) & (sizeof(long) - 1)) {
+        for (i = 0; i + 7 < w; i += 8) {
+            dst[i + 0] = src1[i + 0] - src2[i + 0];
+            dst[i + 1] = src1[i + 1] - src2[i + 1];
+            dst[i + 2] = src1[i + 2] - src2[i + 2];
+            dst[i + 3] = src1[i + 3] - src2[i + 3];
+            dst[i + 4] = src1[i + 4] - src2[i + 4];
+            dst[i + 5] = src1[i + 5] - src2[i + 5];
+            dst[i + 6] = src1[i + 6] - src2[i + 6];
+            dst[i + 7] = src1[i + 7] - src2[i + 7];
+        }
+    } else
+#endif
+    for (i = 0; i <= w - (int) sizeof(long); i += sizeof(long)) {
+        long a = *(long *) (src1 + i);
+        long b = *(long *) (src2 + i);
+        *(long *) (dst + i) = ((a | pb_80) - (b & pb_7f)) ^
+                              ((a ^ b ^ pb_80) & pb_80);
+    }
+    for (; i < w; i++)
+        dst[i + 0] = src1[i + 0] - src2[i + 0];
+}
+
+static void sub_median_pred_c(uint8_t *dst, const uint8_t *src1,
+                              const uint8_t *src2, intptr_t w,
+                              int *left, int *left_top)
+{
+    int i;
+    uint8_t l, lt;
+
+    l  = *left;
+    lt = *left_top;
+
+    for (i = 0; i < w; i++) {
+        const int pred = mid_pred(l, src1[i], (l + src1[i] - lt) & 0xFF);
+        lt     = src1[i];
+        l      = src2[i];
+        dst[i] = l - pred;
+    }
+
+    *left     = l;
+    *left_top = lt;
+}
+
+av_cold void ff_llvidencdsp_init(LLVidEncDSPContext *c)
+{
+    c->diff_bytes      = diff_bytes_c;
+    c->sub_median_pred = sub_median_pred_c;
+
+    if (ARCH_X86)
+        ff_llvidencdsp_init_x86(c);
+}
diff --git a/libavcodec/lossless_videoencdsp.h b/libavcodec/lossless_videoencdsp.h
new file mode 100644
index 0000000..3d645b1
--- /dev/null
+++ b/libavcodec/lossless_videoencdsp.h
@@ -0,0 +1,41 @@
+/*
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef AVCODEC_LOSSLESS_VIDEOENCDSP_H
+#define AVCODEC_LOSSLESS_VIDEOENCDSP_H
+
+#include <stdint.h>
+
+typedef struct LLVidEncDSPContext {
+    void (*diff_bytes)(uint8_t *dst /* align 16 */,
+                       const uint8_t *src1 /* align 16 */,
+                       const uint8_t *src2 /* align 1 */,
+                       intptr_t w);
+    /**
+     * Subtract HuffYUV's variant of median prediction.
+     * Note, this might read from src1[-1], src2[-1].
+     */
+    void (*sub_median_pred)(uint8_t *dst, const uint8_t *src1,
+                            const uint8_t *src2, intptr_t w,
+                            int *left, int *left_top);
+} LLVidEncDSPContext;
+
+void ff_llvidencdsp_init(LLVidEncDSPContext *c);
+void ff_llvidencdsp_init_x86(LLVidEncDSPContext *c);
+
+#endif /* AVCODEC_LOSSLESS_VIDEOENCDSP_H */
diff --git a/libavcodec/pngenc.c b/libavcodec/pngenc.c
index 3aeff83..f67a546 100644
--- a/libavcodec/pngenc.c
+++ b/libavcodec/pngenc.c
@@ -22,7 +22,7 @@
 #include "avcodec.h"
 #include "internal.h"
 #include "bytestream.h"
-#include "huffyuvencdsp.h"
+#include "lossless_videoencdsp.h"
 #include "png.h"
 #include "apng.h"
 
@@ -47,7 +47,7 @@ typedef struct APNGFctlChunk {
 
 typedef struct PNGEncContext {
     AVClass *class;
-    HuffYUVEncDSPContext hdsp;
+    LLVidEncDSPContext llvidencdsp;
 
     uint8_t *bytestream;
     uint8_t *bytestream_start;
@@ -159,7 +159,7 @@ static void sub_left_prediction(PNGEncContext *c, uint8_t *dst, const uint8_t *s
     for (x = 0; x < unaligned_w; x++)
         *dst++ = *src1++ - *src2++;
     size -= unaligned_w;
-    c->hdsp.diff_bytes(dst, src1, src2, size);
+    c->llvidencdsp.diff_bytes(dst, src1, src2, size);
 }
 
 static void png_filter_row(PNGEncContext *c, uint8_t *dst, int filter_type,
@@ -175,7 +175,7 @@ static void png_filter_row(PNGEncContext *c, uint8_t *dst, int filter_type,
         sub_left_prediction(c, dst, src, bpp, size);
         break;
     case PNG_FILTER_VALUE_UP:
-        c->hdsp.diff_bytes(dst, src, top, size);
+        c->llvidencdsp.diff_bytes(dst, src, top, size);
         break;
     case PNG_FILTER_VALUE_AVG:
         for (i = 0; i < bpp; i++)
@@ -1015,7 +1015,7 @@ FF_DISABLE_DEPRECATION_WARNINGS
 FF_ENABLE_DEPRECATION_WARNINGS
 #endif
 
-    ff_huffyuvencdsp_init(&s->hdsp, avctx);
+    ff_llvidencdsp_init(&s->llvidencdsp);
 
 #if FF_API_PRIVATE_OPT
 FF_DISABLE_DEPRECATION_WARNINGS
diff --git a/libavcodec/utvideo.h b/libavcodec/utvideo.h
index 3b2fe5f..68257fe 100644
--- a/libavcodec/utvideo.h
+++ b/libavcodec/utvideo.h
@@ -30,8 +30,8 @@
 #include "libavutil/common.h"
 #include "avcodec.h"
 #include "bswapdsp.h"
-#include "huffyuvencdsp.h"
 #include "lossless_videodsp.h"
+#include "lossless_videoencdsp.h"
 
 enum {
     PRED_NONE = 0,
@@ -70,8 +70,8 @@ typedef struct UtvideoContext {
     const AVClass *class;
     AVCodecContext *avctx;
     BswapDSPContext bdsp;
-    HuffYUVEncDSPContext hdsp;
     LLVidDSPContext llviddsp;
+    LLVidEncDSPContext llvidencdsp;
 
     uint32_t frame_info_size, flags, frame_info;
     int      planes;
diff --git a/libavcodec/utvideoenc.c b/libavcodec/utvideoenc.c
index d82f6a3..2b1230f 100644
--- a/libavcodec/utvideoenc.c
+++ b/libavcodec/utvideoenc.c
@@ -33,7 +33,6 @@
 #include "bswapdsp.h"
 #include "bytestream.h"
 #include "put_bits.h"
-#include "huffyuvencdsp.h"
 #include "mathops.h"
 #include "utvideo.h"
 #include "huffman.h"
@@ -120,7 +119,7 @@ static av_cold int utvideo_encode_init(AVCodecContext *avctx)
     }
 
     ff_bswapdsp_init(&c->bdsp);
-    ff_huffyuvencdsp_init(&c->hdsp, avctx);
+    ff_llvidencdsp_init(&c->llvidencdsp);
 
 #if FF_API_PRIVATE_OPT
 FF_DISABLE_DEPRECATION_WARNINGS
@@ -324,7 +323,7 @@ static void median_predict(UtvideoContext *c, uint8_t *src, uint8_t *dst, int st
 
     /* Rest of the coded part uses median prediction */
     for (j = 1; j < height; j++) {
-        c->hdsp.sub_hfyu_median_pred(dst, src - stride, src, width, &A, &B);
+        c->llvidencdsp.sub_median_pred(dst, src - stride, src, width, &A, &B);
         dst += width;
         src += stride;
     }
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index 1db1137..2f0354a 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -20,8 +20,9 @@ OBJS-$(CONFIG_H264QPEL)                += x86/h264_qpel.o
 OBJS-$(CONFIG_HPELDSP)                 += x86/hpeldsp_init.o
 OBJS-$(CONFIG_LLAUDDSP)                += x86/lossless_audiodsp_init.o
 OBJS-$(CONFIG_LLVIDDSP)                += x86/lossless_videodsp_init.o
+OBJS-$(CONFIG_LLVIDENCDSP)             += x86/lossless_videoencdsp_init.o
 OBJS-$(CONFIG_HUFFYUVDSP)              += x86/huffyuvdsp_init.o
-OBJS-$(CONFIG_HUFFYUVENCDSP)           += x86/huffyuvencdsp_mmx.o
+OBJS-$(CONFIG_HUFFYUVENCDSP)           += x86/huffyuvencdsp_init.o
 OBJS-$(CONFIG_IDCTDSP)                 += x86/idctdsp_init.o
 OBJS-$(CONFIG_LPC)                     += x86/lpc.o
 OBJS-$(CONFIG_ME_CMP)                  += x86/me_cmp_init.o
@@ -114,6 +115,7 @@ YASM-OBJS-$(CONFIG_HUFFYUVENCDSP)      += x86/huffyuvencdsp.o
 YASM-OBJS-$(CONFIG_IDCTDSP)            += x86/idctdsp.o
 YASM-OBJS-$(CONFIG_LLAUDDSP)           += x86/lossless_audiodsp.o
 YASM-OBJS-$(CONFIG_LLVIDDSP)           += x86/lossless_videodsp.o
+YASM-OBJS-$(CONFIG_LLVIDENCDSP)        += x86/lossless_videoencdsp.o
 YASM-OBJS-$(CONFIG_ME_CMP)             += x86/me_cmp.o
 YASM-OBJS-$(CONFIG_MPEGAUDIODSP)       += x86/imdct36.o
 YASM-OBJS-$(CONFIG_MPEGVIDEOENC)       += x86/mpegvideoencdsp.o
diff --git a/libavcodec/x86/huffyuvencdsp.asm b/libavcodec/x86/huffyuvencdsp.asm
index 78ad202..1228aa8 100644
--- a/libavcodec/x86/huffyuvencdsp.asm
+++ b/libavcodec/x86/huffyuvencdsp.asm
@@ -27,128 +27,8 @@
 
 section .text
 
-; void ff_diff_bytes(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
-;                    intptr_t w);
-%macro DIFF_BYTES_PROLOGUE 0
-%if ARCH_X86_32
-cglobal diff_bytes, 3,5,2, dst, src1, src2
-%define wq r4q
-    DECLARE_REG_TMP 3
-    mov               wq, r3mp
-%else
-cglobal diff_bytes, 4,5,2, dst, src1, src2, w
-    DECLARE_REG_TMP 4
-%endif ; ARCH_X86_32
-%define i t0q
-%endmacro
-
-; label to jump to if w < regsize
-%macro DIFF_BYTES_LOOP_PREP 1
-    mov                i, wq
-    and                i, -2 * regsize
-        jz            %1
-    add             dstq, i
-    add            src1q, i
-    add            src2q, i
-    neg                i
-%endmacro
-
-; mov type used for src1q, dstq, first reg, second reg
-%macro DIFF_BYTES_LOOP_CORE 4
-%if mmsize != 16
-    mov%1             %3, [src1q + i]
-    mov%1             %4, [src1q + i + regsize]
-    psubb             %3, [src2q + i]
-    psubb             %4, [src2q + i + regsize]
-    mov%2           [dstq + i], %3
-    mov%2 [regsize + dstq + i], %4
-%else
-    ; SSE enforces alignment of psubb operand
-    mov%1             %3, [src1q + i]
-    movu              %4, [src2q + i]
-    psubb             %3, %4
-    mov%2     [dstq + i], %3
-    mov%1             %3, [src1q + i + regsize]
-    movu              %4, [src2q + i + regsize]
-    psubb             %3, %4
-    mov%2 [regsize + dstq + i], %3
-%endif
-%endmacro
-
-%macro DIFF_BYTES_BODY 2 ; mov type used for src1q, for dstq
-    %define regsize mmsize
-.loop_%1%2:
-    DIFF_BYTES_LOOP_CORE %1, %2, m0, m1
-    add                i, 2 * regsize
-        jl    .loop_%1%2
-.skip_main_%1%2:
-    and               wq, 2 * regsize - 1
-        jz     .end_%1%2
-%if mmsize > 16
-    ; fall back to narrower xmm
-    %define regsize mmsize / 2
-    DIFF_BYTES_LOOP_PREP .setup_loop_gpr_aa
-.loop2_%1%2:
-    DIFF_BYTES_LOOP_CORE %1, %2, xm0, xm1
-    add                i, 2 * regsize
-        jl   .loop2_%1%2
-.setup_loop_gpr_%1%2:
-    and               wq, 2 * regsize - 1
-        jz     .end_%1%2
-%endif
-    add             dstq, wq
-    add            src1q, wq
-    add            src2q, wq
-    neg               wq
-.loop_gpr_%1%2:
-    mov              t0b, [src1q + wq]
-    sub              t0b, [src2q + wq]
-    mov      [dstq + wq], t0b
-    inc               wq
-        jl .loop_gpr_%1%2
-.end_%1%2:
-    REP_RET
-%endmacro
-
-%if ARCH_X86_32
-INIT_MMX mmx
-DIFF_BYTES_PROLOGUE
-    %define regsize mmsize
-    DIFF_BYTES_LOOP_PREP .skip_main_aa
-    DIFF_BYTES_BODY    a, a
-%undef i
-%endif
-
-INIT_XMM sse2
-DIFF_BYTES_PROLOGUE
-    %define regsize mmsize
-    DIFF_BYTES_LOOP_PREP .skip_main_aa
-    test            dstq, regsize - 1
-        jnz     .loop_uu
-    test           src1q, regsize - 1
-        jnz     .loop_ua
-    DIFF_BYTES_BODY    a, a
-    DIFF_BYTES_BODY    u, a
-    DIFF_BYTES_BODY    u, u
-%undef i
-
-%if HAVE_AVX2_EXTERNAL
-INIT_YMM avx2
-DIFF_BYTES_PROLOGUE
-    %define regsize mmsize
-    ; Directly using unaligned SSE2 version is marginally faster than
-    ; branching based on arguments.
-    DIFF_BYTES_LOOP_PREP .skip_main_uu
-    test            dstq, regsize - 1
-        jnz     .loop_uu
-    test           src1q, regsize - 1
-        jnz     .loop_ua
-    DIFF_BYTES_BODY    a, a
-    DIFF_BYTES_BODY    u, a
-    DIFF_BYTES_BODY    u, u
-%undef i
-%endif
-
+; void ff_diff_int16(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
+;                    unsigned mask, int w);
 %macro INT16_LOOP 2 ; %1 = a/u (aligned/unaligned), %2 = add/sub
     movd    m4, maskd
     SPLATW  m4, m4
diff --git a/libavcodec/x86/huffyuvencdsp_init.c b/libavcodec/x86/huffyuvencdsp_init.c
new file mode 100644
index 0000000..f66bc8c
--- /dev/null
+++ b/libavcodec/x86/huffyuvencdsp_init.c
@@ -0,0 +1,54 @@
+/*
+ * SIMD-optimized HuffYUV encoding functions
+ * Copyright (c) 2000, 2001 Fabrice Bellard
+ * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+ *
+ * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/attributes.h"
+#include "libavutil/cpu.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/x86/cpu.h"
+#include "libavcodec/huffyuvencdsp.h"
+
+void ff_diff_int16_mmx (uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
+                        unsigned mask, int w);
+void ff_diff_int16_sse2(uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
+                        unsigned mask, int w);
+void ff_sub_hfyu_median_pred_int16_mmxext(uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
+                                          unsigned mask, int w, int *left, int *left_top);
+
+av_cold void ff_huffyuvencdsp_init_x86(HuffYUVEncDSPContext *c, AVCodecContext *avctx)
+{
+    av_unused int cpu_flags = av_get_cpu_flags();
+    const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(avctx->pix_fmt);
+
+    if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
+        c->diff_int16 = ff_diff_int16_mmx;
+    }
+
+    if (EXTERNAL_MMXEXT(cpu_flags) && pix_desc && pix_desc->comp[0].depth<16) {
+        c->sub_hfyu_median_pred_int16 = ff_sub_hfyu_median_pred_int16_mmxext;
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        c->diff_int16 = ff_diff_int16_sse2;
+    }
+}
diff --git a/libavcodec/x86/lossless_videoencdsp.asm b/libavcodec/x86/lossless_videoencdsp.asm
new file mode 100644
index 0000000..63fd721
--- /dev/null
+++ b/libavcodec/x86/lossless_videoencdsp.asm
@@ -0,0 +1,150 @@
+;************************************************************************
+;* SIMD-optimized lossless video encoding functions
+;* Copyright (c) 2000, 2001 Fabrice Bellard
+;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
+;*
+;* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
+;* Conversion to NASM format by Tiancheng "Timothy" Gu <timothygu99@gmail.com>
+;*
+;* This file is part of FFmpeg.
+;*
+;* FFmpeg is free software; you can redistribute it and/or
+;* modify it under the terms of the GNU Lesser General Public
+;* License as published by the Free Software Foundation; either
+;* version 2.1 of the License, or (at your option) any later version.
+;*
+;* FFmpeg is distributed in the hope that it will be useful,
+;* but WITHOUT ANY WARRANTY; without even the implied warranty of
+;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+;* Lesser General Public License for more details.
+;*
+;* You should have received a copy of the GNU Lesser General Public
+;* License along with FFmpeg; if not, write to the Free Software
+;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+;******************************************************************************
+
+%include "libavutil/x86/x86util.asm"
+
+section .text
+
+; void ff_diff_bytes(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
+;                    intptr_t w);
+%macro DIFF_BYTES_PROLOGUE 0
+%if ARCH_X86_32
+cglobal diff_bytes, 3,5,2, dst, src1, src2
+%define wq r4q
+    DECLARE_REG_TMP 3
+    mov               wq, r3mp
+%else
+cglobal diff_bytes, 4,5,2, dst, src1, src2, w
+    DECLARE_REG_TMP 4
+%endif ; ARCH_X86_32
+%define i t0q
+%endmacro
+
+; label to jump to if w < regsize
+%macro DIFF_BYTES_LOOP_PREP 1
+    mov                i, wq
+    and                i, -2 * regsize
+        jz            %1
+    add             dstq, i
+    add            src1q, i
+    add            src2q, i
+    neg                i
+%endmacro
+
+; mov type used for src1q, dstq, first reg, second reg
+%macro DIFF_BYTES_LOOP_CORE 4
+%if mmsize != 16
+    mov%1             %3, [src1q + i]
+    mov%1             %4, [src1q + i + regsize]
+    psubb             %3, [src2q + i]
+    psubb             %4, [src2q + i + regsize]
+    mov%2           [dstq + i], %3
+    mov%2 [regsize + dstq + i], %4
+%else
+    ; SSE enforces alignment of psubb operand
+    mov%1             %3, [src1q + i]
+    movu              %4, [src2q + i]
+    psubb             %3, %4
+    mov%2     [dstq + i], %3
+    mov%1             %3, [src1q + i + regsize]
+    movu              %4, [src2q + i + regsize]
+    psubb             %3, %4
+    mov%2 [regsize + dstq + i], %3
+%endif
+%endmacro
+
+%macro DIFF_BYTES_BODY 2 ; mov type used for src1q, for dstq
+    %define regsize mmsize
+.loop_%1%2:
+    DIFF_BYTES_LOOP_CORE %1, %2, m0, m1
+    add                i, 2 * regsize
+        jl    .loop_%1%2
+.skip_main_%1%2:
+    and               wq, 2 * regsize - 1
+        jz     .end_%1%2
+%if mmsize > 16
+    ; fall back to narrower xmm
+    %define regsize mmsize / 2
+    DIFF_BYTES_LOOP_PREP .setup_loop_gpr_aa
+.loop2_%1%2:
+    DIFF_BYTES_LOOP_CORE %1, %2, xm0, xm1
+    add                i, 2 * regsize
+        jl   .loop2_%1%2
+.setup_loop_gpr_%1%2:
+    and               wq, 2 * regsize - 1
+        jz     .end_%1%2
+%endif
+    add             dstq, wq
+    add            src1q, wq
+    add            src2q, wq
+    neg               wq
+.loop_gpr_%1%2:
+    mov              t0b, [src1q + wq]
+    sub              t0b, [src2q + wq]
+    mov      [dstq + wq], t0b
+    inc               wq
+        jl .loop_gpr_%1%2
+.end_%1%2:
+    REP_RET
+%endmacro
+
+%if ARCH_X86_32
+INIT_MMX mmx
+DIFF_BYTES_PROLOGUE
+    %define regsize mmsize
+    DIFF_BYTES_LOOP_PREP .skip_main_aa
+    DIFF_BYTES_BODY    a, a
+%undef i
+%endif
+
+INIT_XMM sse2
+DIFF_BYTES_PROLOGUE
+    %define regsize mmsize
+    DIFF_BYTES_LOOP_PREP .skip_main_aa
+    test            dstq, regsize - 1
+        jnz     .loop_uu
+    test           src1q, regsize - 1
+        jnz     .loop_ua
+    DIFF_BYTES_BODY    a, a
+    DIFF_BYTES_BODY    u, a
+    DIFF_BYTES_BODY    u, u
+%undef i
+
+%if HAVE_AVX2_EXTERNAL
+INIT_YMM avx2
+DIFF_BYTES_PROLOGUE
+    %define regsize mmsize
+    ; Directly using unaligned SSE2 version is marginally faster than
+    ; branching based on arguments.
+    DIFF_BYTES_LOOP_PREP .skip_main_uu
+    test            dstq, regsize - 1
+        jnz     .loop_uu
+    test           src1q, regsize - 1
+        jnz     .loop_ua
+    DIFF_BYTES_BODY    a, a
+    DIFF_BYTES_BODY    u, a
+    DIFF_BYTES_BODY    u, u
+%undef i
+%endif
diff --git a/libavcodec/x86/huffyuvencdsp_mmx.c b/libavcodec/x86/lossless_videoencdsp_init.c
similarity index 72%
rename from libavcodec/x86/huffyuvencdsp_mmx.c
rename to libavcodec/x86/lossless_videoencdsp_init.c
index 2402021..fc728c9 100644
--- a/libavcodec/x86/huffyuvencdsp_mmx.c
+++ b/libavcodec/x86/lossless_videoencdsp_init.c
@@ -1,5 +1,5 @@
 /*
- * SIMD-optimized HuffYUV encoding functions
+ * SIMD-optimized lossless video encoding functions
  * Copyright (c) 2000, 2001 Fabrice Bellard
  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  *
@@ -24,10 +24,9 @@
 
 #include "libavutil/attributes.h"
 #include "libavutil/cpu.h"
-#include "libavutil/pixdesc.h"
 #include "libavutil/x86/asm.h"
 #include "libavutil/x86/cpu.h"
-#include "libavcodec/huffyuvencdsp.h"
+#include "libavcodec/lossless_videoencdsp.h"
 #include "libavcodec/mathops.h"
 
 void ff_diff_bytes_mmx(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
@@ -36,18 +35,12 @@ void ff_diff_bytes_sse2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
                         intptr_t w);
 void ff_diff_bytes_avx2(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
                         intptr_t w);
-void ff_diff_int16_mmx (uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
-                        unsigned mask, int w);
-void ff_diff_int16_sse2(uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
-                        unsigned mask, int w);
-void ff_sub_hfyu_median_pred_int16_mmxext(uint16_t *dst, const uint16_t *src1, const uint16_t *src2,
-                                          unsigned mask, int w, int *left, int *left_top);
 
 #if HAVE_INLINE_ASM
 
-static void sub_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *src1,
-                                        const uint8_t *src2, intptr_t w,
-                                        int *left, int *left_top)
+static void sub_median_pred_mmxext(uint8_t *dst, const uint8_t *src1,
+                                   const uint8_t *src2, intptr_t w,
+                                   int *left, int *left_top)
 {
     x86_reg i = 0;
     uint8_t l, lt;
@@ -87,29 +80,22 @@ static void sub_hfyu_median_pred_mmxext(uint8_t *dst, const uint8_t *src1,
 
 #endif /* HAVE_INLINE_ASM */
 
-av_cold void ff_huffyuvencdsp_init_x86(HuffYUVEncDSPContext *c, AVCodecContext *avctx)
+av_cold void ff_llvidencdsp_init_x86(LLVidEncDSPContext *c)
 {
     av_unused int cpu_flags = av_get_cpu_flags();
-    const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(avctx->pix_fmt);
 
     if (ARCH_X86_32 && EXTERNAL_MMX(cpu_flags)) {
         c->diff_bytes = ff_diff_bytes_mmx;
-        c->diff_int16 = ff_diff_int16_mmx;
     }
 
 #if HAVE_INLINE_ASM
     if (INLINE_MMXEXT(cpu_flags)) {
-        c->sub_hfyu_median_pred = sub_hfyu_median_pred_mmxext;
+        c->sub_median_pred = sub_median_pred_mmxext;
     }
 #endif /* HAVE_INLINE_ASM */
 
-    if (EXTERNAL_MMXEXT(cpu_flags) && pix_desc && pix_desc->comp[0].depth<16) {
-        c->sub_hfyu_median_pred_int16 = ff_sub_hfyu_median_pred_int16_mmxext;
-    }
-
     if (EXTERNAL_SSE2(cpu_flags)) {
         c->diff_bytes = ff_diff_bytes_sse2;
-        c->diff_int16 = ff_diff_int16_sse2;
     }
 
     if (EXTERNAL_AVX2_FAST(cpu_flags)) {
