Move add/diff_int16 to lossless_videodsp

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

16 files changed, 244 insertions, 118 deletions

diff --git a/configure b/configure
index 1a357e7b23..7b4cfc5f5e 100755
--- a/configure
+++ b/configure
@@ -1683,6 +1683,7 @@ CONFIG_EXTRA="
     huffman
     intrax8
     lgplv3
+    llviddsp
     lpc
     mpegaudio
     mpegaudiodsp
@@ -1904,8 +1905,8 @@ eatqi_decoder_select="aandcttables error_resilience mpegvideo"
 exr_decoder_select="zlib"
 ffv1_decoder_select="dsputil golomb rangecoder"
 ffv1_encoder_select="dsputil rangecoder"
-ffvhuff_decoder_select="dsputil"
-ffvhuff_encoder_select="dsputil huffman"
+ffvhuff_decoder_select="dsputil llviddsp"
+ffvhuff_encoder_select="dsputil huffman llviddsp"
 flac_decoder_select="golomb"
 flac_encoder_select="dsputil golomb lpc"
 flashsv_decoder_select="zlib"
@@ -1927,8 +1928,8 @@ h263p_encoder_select="h263_encoder"
 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
 h264_decoder_suggest="error_resilience"
 hevc_decoder_select="dsputil golomb videodsp"
-huffyuv_decoder_select="dsputil"
-huffyuv_encoder_select="dsputil huffman"
+huffyuv_decoder_select="dsputil llviddsp"
+huffyuv_encoder_select="dsputil huffman llviddsp"
 iac_decoder_select="dsputil fft mdct sinewin"
 imc_decoder_select="dsputil fft mdct sinewin"
 indeo3_decoder_select="hpeldsp"
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 042acd7302..a2b4b8e981 100644
--- a/libavcodec/Makefile
+++ b/libavcodec/Makefile
@@ -57,6 +57,7 @@ OBJS-$(CONFIG_HPELDSP)                 += hpeldsp.o
 OBJS-$(CONFIG_HUFFMAN)                 += huffman.o
 OBJS-$(CONFIG_INTRAX8)                 += intrax8.o intrax8dsp.o
 OBJS-$(CONFIG_LIBXVID)                 += libxvid_rc.o
+OBJS-$(CONFIG_LLVIDDSP)                += lossless_videodsp.o
 OBJS-$(CONFIG_LPC)                     += lpc.o
 OBJS-$(CONFIG_LSP)                     += lsp.o
 OBJS-$(CONFIG_MDCT)                    += mdct_fixed.o mdct_float.o mdct_fixed_32.o
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
index 8533e5382c..0e9e34798e 100644
--- a/libavcodec/dsputil.c
+++ b/libavcodec/dsputil.c
@@ -1888,45 +1888,6 @@ static void diff_bytes_c(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
         dst[i+0] = src1[i+0]-src2[i+0];
 }
 
-static void add_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w){
-    long i;
-    unsigned long pw_lsb = (mask >> 1) * 0x0001000100010001ULL;
-    unsigned long pw_msb = pw_lsb +  0x0001000100010001ULL;
-    for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) {
-        long a = *(long*)(src+i);
-        long b = *(long*)(dst+i);
-        *(long*)(dst+i) = ((a&pw_lsb) + (b&pw_lsb)) ^ ((a^b)&pw_msb);
-    }
-    for(; i<w; i++)
-        dst[i] = (dst[i] + src[i]) & mask;
-}
-
-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
-    if((long)src2 & (sizeof(long)-1)){
-        for(i=0; i+7<w; i+=8){
-            dst[i+0] = (src1[i+0]-src2[i+0]) & mask;
-            dst[i+1] = (src1[i+1]-src2[i+1]) & mask;
-            dst[i+2] = (src1[i+2]-src2[i+2]) & mask;
-            dst[i+3] = (src1[i+3]-src2[i+3]) & mask;
-        }
-    }else
-#endif
-    {
-        unsigned long pw_lsb = (mask >> 1) * 0x0001000100010001ULL;
-        unsigned long pw_msb = pw_lsb +  0x0001000100010001ULL;
-
-        for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) {
-            long a = *(long*)(src1+i);
-            long b = *(long*)(src2+i);
-            *(long*)(dst+i) = ((a|pw_msb) - (b&pw_lsb)) ^ ((a^b^pw_msb)&pw_msb);
-        }
-    }
-    for (; i<w; i++)
-        dst[i] = (src1[i] - src2[i]) & mask;
-}
-
 static void add_hfyu_median_prediction_c(uint8_t *dst, const uint8_t *src1, const uint8_t *diff, int w, int *left, int *left_top){
     int i;
     uint8_t l, lt;
@@ -2812,8 +2773,6 @@ av_cold void ff_dsputil_init(DSPContext* c, AVCodecContext *avctx)
 
     c->add_bytes= add_bytes_c;
     c->diff_bytes= diff_bytes_c;
-    c->add_int16 = add_int16_c;
-    c->diff_int16= diff_int16_c;
     c->add_hfyu_median_prediction= add_hfyu_median_prediction_c;
     c->sub_hfyu_median_prediction= sub_hfyu_median_prediction_c;
     c->add_hfyu_left_prediction  = add_hfyu_left_prediction_c;
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h
index 7ad96f6cd7..0897c560b4 100644
--- a/libavcodec/dsputil.h
+++ b/libavcodec/dsputil.h
@@ -193,8 +193,6 @@ typedef struct DSPContext {
     /* huffyuv specific */
     void (*add_bytes)(uint8_t *dst/*align 16*/, uint8_t *src/*align 16*/, int w);
     void (*diff_bytes)(uint8_t *dst/*align 16*/, const uint8_t *src1/*align 16*/, const uint8_t *src2/*align 1*/,int w);
-    void (*add_int16)(uint16_t *dst/*align 16*/, const uint16_t *src/*align 16*/, unsigned mask, int 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]
diff --git a/libavcodec/huffyuv.c b/libavcodec/huffyuv.c
index c183bdf075..8b0dcdcc6e 100644
--- a/libavcodec/huffyuv.c
+++ b/libavcodec/huffyuv.c
@@ -81,6 +81,7 @@ av_cold void ff_huffyuv_common_init(AVCodecContext *avctx)
     s->flags = avctx->flags;
 
     ff_dsputil_init(&s->dsp, avctx);
+    ff_llviddsp_init(&s->llviddsp);
 
     s->width = avctx->width;
     s->height = avctx->height;
diff --git a/libavcodec/huffyuv.h b/libavcodec/huffyuv.h
index b529f1b52b..0aecad0437 100644
--- a/libavcodec/huffyuv.h
+++ b/libavcodec/huffyuv.h
@@ -35,6 +35,7 @@
 #include "dsputil.h"
 #include "get_bits.h"
 #include "put_bits.h"
+#include "lossless_videodsp.h"
 
 #define VLC_BITS 11
 
@@ -92,6 +93,7 @@ typedef struct HYuvContext {
     uint8_t *bitstream_buffer;
     unsigned int bitstream_buffer_size;
     DSPContext dsp;
+    LLVidDSPContext llviddsp;
 } HYuvContext;
 
 void ff_huffyuv_common_init(AVCodecContext *s);
diff --git a/libavcodec/huffyuvdec.c b/libavcodec/huffyuvdec.c
index aafa9e4abb..26c83098c4 100644
--- a/libavcodec/huffyuvdec.c
+++ b/libavcodec/huffyuvdec.c
@@ -708,7 +708,7 @@ static void add_bytes(HYuvContext *s, uint8_t *dst, uint8_t *src, int w)
     if (s->bps <= 8) {
         s->dsp.add_bytes(dst, src, w);
     } else {
-        s->dsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
+        s->llviddsp.add_int16((uint16_t*)dst, (const uint16_t*)src, s->n - 1, w);
     }
 }
 
diff --git a/libavcodec/huffyuvenc.c b/libavcodec/huffyuvenc.c
index 2bc95b59e8..206f182850 100644
--- a/libavcodec/huffyuvenc.c
+++ b/libavcodec/huffyuvenc.c
@@ -41,7 +41,7 @@ static inline void diff_bytes(HYuvContext *s, uint8_t *dst,
     if (s->bps <= 8) {
         s->dsp.diff_bytes(dst, src0, src1, w);
     } else {
-        s->dsp.diff_int16((uint16_t *)dst, (const uint16_t *)src0, (const uint16_t *)src1, s->n - 1, w);
+        s->llviddsp.diff_int16((uint16_t *)dst, (const uint16_t *)src0, (const uint16_t *)src1, s->n - 1, w);
     }
 }
 
diff --git a/libavcodec/lossless_videodsp.c b/libavcodec/lossless_videodsp.c
new file mode 100644
index 0000000000..7654f3ef67
--- /dev/null
+++ b/libavcodec/lossless_videodsp.c
@@ -0,0 +1,69 @@
+/*
+ * Lossless video DSP utils
+ *
+ * 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 "avcodec.h"
+#include "lossless_videodsp.h"
+
+static void add_int16_c(uint16_t *dst, const uint16_t *src, unsigned mask, int w){
+    long i;
+    unsigned long pw_lsb = (mask >> 1) * 0x0001000100010001ULL;
+    unsigned long pw_msb = pw_lsb +  0x0001000100010001ULL;
+    for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) {
+        long a = *(long*)(src+i);
+        long b = *(long*)(dst+i);
+        *(long*)(dst+i) = ((a&pw_lsb) + (b&pw_lsb)) ^ ((a^b)&pw_msb);
+    }
+    for(; i<w; i++)
+        dst[i] = (dst[i] + src[i]) & mask;
+}
+
+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
+    if((long)src2 & (sizeof(long)-1)){
+        for(i=0; i+7<w; i+=8){
+            dst[i+0] = (src1[i+0]-src2[i+0]) & mask;
+            dst[i+1] = (src1[i+1]-src2[i+1]) & mask;
+            dst[i+2] = (src1[i+2]-src2[i+2]) & mask;
+            dst[i+3] = (src1[i+3]-src2[i+3]) & mask;
+        }
+    }else
+#endif
+    {
+        unsigned long pw_lsb = (mask >> 1) * 0x0001000100010001ULL;
+        unsigned long pw_msb = pw_lsb +  0x0001000100010001ULL;
+
+        for (i = 0; i <= w - (int)sizeof(long)/2; i += sizeof(long)/2) {
+            long a = *(long*)(src1+i);
+            long b = *(long*)(src2+i);
+            *(long*)(dst+i) = ((a|pw_msb) - (b&pw_lsb)) ^ ((a^b^pw_msb)&pw_msb);
+        }
+    }
+    for (; i<w; i++)
+        dst[i] = (src1[i] - src2[i]) & mask;
+}
+
+void ff_llviddsp_init(LLVidDSPContext *c)
+{
+    c->add_int16 = add_int16_c;
+    c->diff_int16= diff_int16_c;
+
+    if (ARCH_X86)
+        ff_llviddsp_init_x86(c);
+}
diff --git a/libavcodec/lossless_videodsp.h b/libavcodec/lossless_videodsp.h
new file mode 100644
index 0000000000..79dcc7443a
--- /dev/null
+++ b/libavcodec/lossless_videodsp.h
@@ -0,0 +1,36 @@
+/*
+ * Lossless video DSP utils
+ *
+ * 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_VIDEODSP_H
+#define AVCODEC_LOSSLESS_VIDEODSP_H
+
+#include "avcodec.h"
+#include "libavutil/cpu.h"
+
+typedef struct LLVidDSPContext {
+    void (*add_int16)(uint16_t *dst/*align 16*/, const uint16_t *src/*align 16*/, unsigned mask, int 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);
+} LLVidDSPContext;
+
+void ff_llviddsp_init(LLVidDSPContext *llviddsp);
+void ff_llviddsp_init_x86(LLVidDSPContext *llviddsp);
+
+#endif //AVCODEC_LOSSLESS_VIDEODSP_H
diff --git a/libavcodec/x86/Makefile b/libavcodec/x86/Makefile
index c7cdc2fcf5..dddaae1f72 100644
--- a/libavcodec/x86/Makefile
+++ b/libavcodec/x86/Makefile
@@ -18,6 +18,7 @@ OBJS-$(CONFIG_H264DSP)                 += x86/h264dsp_init.o
 OBJS-$(CONFIG_H264PRED)                += x86/h264_intrapred_init.o
 OBJS-$(CONFIG_H264QPEL)                += x86/h264_qpel.o
 OBJS-$(CONFIG_HPELDSP)                 += x86/hpeldsp_init.o
+OBJS-$(CONFIG_LLVIDDSP)                += x86/lossless_videodsp_init.o
 OBJS-$(CONFIG_LPC)                     += x86/lpc.o
 OBJS-$(CONFIG_MLP_DECODER)             += x86/mlpdsp.o
 OBJS-$(CONFIG_MPEGAUDIODSP)            += x86/mpegaudiodsp.o
@@ -86,6 +87,7 @@ YASM-OBJS-$(CONFIG_H264QPEL)           += x86/h264_qpel_8bit.o          \
                                           x86/qpel.o
 YASM-OBJS-$(CONFIG_HPELDSP)            += x86/fpel.o                    \
                                           x86/hpeldsp.o
+YASM-OBJS-$(CONFIG_LLVIDDSP)           += x86/lossless_videodsp.o
 YASM-OBJS-$(CONFIG_MPEGAUDIODSP)       += x86/imdct36.o
 YASM-OBJS-$(CONFIG_PNG_DECODER)        += x86/pngdsp.o
 YASM-OBJS-$(CONFIG_PRORES_DECODER)     += x86/proresdsp.o
diff --git a/libavcodec/x86/dsputil.asm b/libavcodec/x86/dsputil.asm
index 9450cd8fd6..7162034c67 100644
--- a/libavcodec/x86/dsputil.asm
+++ b/libavcodec/x86/dsputil.asm
@@ -466,70 +466,6 @@ cglobal add_hfyu_left_prediction, 3,3,7, dst, src, w, left
     ADD_HFYU_LEFT_LOOP 0, 0
 
 
-%macro ADD_INT16_LOOP 1 ; %1 = is_aligned
-    movd      m4, maskq
-    punpcklwd m4, m4
-    punpcklwd m4, m4
-    punpcklwd m4, m4
-    add     wq, wq
-    test    wq, 2*mmsize - 1
-    jz %%.tomainloop
-%%.wordloop:
-    sub     wq, 2
-    mov     ax, [srcq+wq]
-    add     ax, [dstq+wq]
-    and     ax, maskw
-    mov     [dstq+wq], ax
-    test    wq, 2*mmsize - 1
-    jnz %%.wordloop
-%%.tomainloop:
-    add     srcq, wq
-    add     dstq, wq
-    neg     wq
-    jz      %%.end
-%%.loop:
-%if %1
-    mova    m0, [srcq+wq]
-    mova    m1, [dstq+wq]
-    mova    m2, [srcq+wq+mmsize]
-    mova    m3, [dstq+wq+mmsize]
-%else
-    movu    m0, [srcq+wq]
-    movu    m1, [dstq+wq]
-    movu    m2, [srcq+wq+mmsize]
-    movu    m3, [dstq+wq+mmsize]
-%endif
-    paddw   m0, m1
-    paddw   m2, m3
-    pand    m0, m4
-    pand    m2, m4
-%if %1
-    mova    [dstq+wq]       , m0
-    mova    [dstq+wq+mmsize], m2
-%else
-    movu    [dstq+wq]       , m0
-    movu    [dstq+wq+mmsize], m2
-%endif
-    add     wq, 2*mmsize
-    jl %%.loop
-%%.end:
-    RET
-%endmacro
-
-INIT_MMX mmx
-cglobal add_int16, 4,4,5, dst, src, mask, w
-    ADD_INT16_LOOP 1
-
-INIT_XMM sse2
-cglobal add_int16, 4,4,5, dst, src, mask, w
-    test srcq, mmsize-1
-    jnz .unaligned
-    test dstq, mmsize-1
-    jnz .unaligned
-    ADD_INT16_LOOP 1
-.unaligned:
-    ADD_INT16_LOOP 0
-
 ;-----------------------------------------------------------------------------
 ; void ff_vector_clip_int32(int32_t *dst, const int32_t *src, int32_t min,
 ;                           int32_t max, unsigned int len)
diff --git a/libavcodec/x86/dsputil_init.c b/libavcodec/x86/dsputil_init.c
index 08bd29720a..e0b40410a7 100644
--- a/libavcodec/x86/dsputil_init.c
+++ b/libavcodec/x86/dsputil_init.c
@@ -542,7 +542,6 @@ static av_cold void dsputil_init_mmx(DSPContext *c, AVCodecContext *avctx,
 #endif /* HAVE_MMX_INLINE */
 
 #if HAVE_MMX_EXTERNAL
-    c->add_int16 = ff_add_int16_mmx;
     c->vector_clip_int32 = ff_vector_clip_int32_mmx;
 #endif /* HAVE_MMX_EXTERNAL */
 }
@@ -626,8 +625,6 @@ static av_cold void dsputil_init_sse2(DSPContext *c, AVCodecContext *avctx,
         c->vector_clip_int32 = ff_vector_clip_int32_sse2;
     }
     c->bswap_buf = ff_bswap32_buf_sse2;
-
-    c->add_int16 = ff_add_int16_sse2;
 #endif /* HAVE_SSE2_EXTERNAL */
 }
 
diff --git a/libavcodec/x86/dsputil_x86.h b/libavcodec/x86/dsputil_x86.h
index e707e55a59..356b2c142f 100644
--- a/libavcodec/x86/dsputil_x86.h
+++ b/libavcodec/x86/dsputil_x86.h
@@ -116,8 +116,6 @@ void ff_clear_blocks_mmx(int16_t *blocks);
 void ff_clear_blocks_sse(int16_t *blocks);
 
 void ff_add_bytes_mmx(uint8_t *dst, uint8_t *src, int w);
-void ff_add_int16_mmx(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
-void ff_add_int16_sse2(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
 
 void ff_add_hfyu_median_prediction_cmov(uint8_t *dst, const uint8_t *top,
                                         const uint8_t *diff, int w,
diff --git a/libavcodec/x86/lossless_videodsp.asm b/libavcodec/x86/lossless_videodsp.asm
new file mode 100644
index 0000000000..d33299ca8c
--- /dev/null
+++ b/libavcodec/x86/lossless_videodsp.asm
@@ -0,0 +1,88 @@
+;******************************************************************************
+;* SIMD lossless video DSP utils
+;* Copyright (c) 2014 Michael Niedermayer
+;*
+;* 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/x86/x86util.asm"
+
+SECTION_TEXT
+
+%macro ADD_INT16_LOOP 1 ; %1 = is_aligned
+    movd      m4, maskq
+    punpcklwd m4, m4
+    punpcklwd m4, m4
+    punpcklwd m4, m4
+    add     wq, wq
+    test    wq, 2*mmsize - 1
+    jz %%.tomainloop
+%%.wordloop:
+    sub     wq, 2
+    mov     ax, [srcq+wq]
+    add     ax, [dstq+wq]
+    and     ax, maskw
+    mov     [dstq+wq], ax
+    test    wq, 2*mmsize - 1
+    jnz %%.wordloop
+%%.tomainloop:
+    add     srcq, wq
+    add     dstq, wq
+    neg     wq
+    jz      %%.end
+%%.loop:
+%if %1
+    mova    m0, [srcq+wq]
+    mova    m1, [dstq+wq]
+    mova    m2, [srcq+wq+mmsize]
+    mova    m3, [dstq+wq+mmsize]
+%else
+    movu    m0, [srcq+wq]
+    movu    m1, [dstq+wq]
+    movu    m2, [srcq+wq+mmsize]
+    movu    m3, [dstq+wq+mmsize]
+%endif
+    paddw   m0, m1
+    paddw   m2, m3
+    pand    m0, m4
+    pand    m2, m4
+%if %1
+    mova    [dstq+wq]       , m0
+    mova    [dstq+wq+mmsize], m2
+%else
+    movu    [dstq+wq]       , m0
+    movu    [dstq+wq+mmsize], m2
+%endif
+    add     wq, 2*mmsize
+    jl %%.loop
+%%.end:
+    RET
+%endmacro
+
+INIT_MMX mmx
+cglobal add_int16, 4,4,5, dst, src, mask, w
+    ADD_INT16_LOOP 1
+
+INIT_XMM sse2
+cglobal add_int16, 4,4,5, dst, src, mask, w
+    test srcq, mmsize-1
+    jnz .unaligned
+    test dstq, mmsize-1
+    jnz .unaligned
+    ADD_INT16_LOOP 1
+.unaligned:
+    ADD_INT16_LOOP 0
diff --git a/libavcodec/x86/lossless_videodsp_init.c b/libavcodec/x86/lossless_videodsp_init.c
new file mode 100644
index 0000000000..bc51d51cc1
--- /dev/null
+++ b/libavcodec/x86/lossless_videodsp_init.c
@@ -0,0 +1,38 @@
+/*
+ * Lossless video DSP utils
+ *
+ * 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 "../lossless_videodsp.h"
+#include "libavutil/x86/cpu.h"
+
+void ff_add_int16_mmx(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
+void ff_add_int16_sse2(uint16_t *dst, const uint16_t *src, unsigned mask, int w);
+
+void ff_llviddsp_init_x86(LLVidDSPContext *c)
+{
+    int cpu_flags = av_get_cpu_flags();
+
+    if (EXTERNAL_MMX(cpu_flags)) {
+        c->add_int16 = ff_add_int16_mmx;
+    }
+
+    if (EXTERNAL_SSE2(cpu_flags)) {
+        c->add_int16 = ff_add_int16_sse2;
+    }
+}