ffmpeg | branch: master | Clément Bœsch <u...@pkh.me> | Mon Mar 20 08:30:42 
2017 +0100| [8200b16a9c77e66759a5b992bd1ae93c984702c7] | committer: Clément 
Bœsch

Merge commit 'd7bc52bf456deba0f32d9fe5c288ec441f1ebef5'

* commit 'd7bc52bf456deba0f32d9fe5c288ec441f1ebef5':
  imgutils: add a function for copying image data from GPU mapped memory

Merged-by: Clément Bœsch <u...@pkh.me>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8200b16a9c77e66759a5b992bd1ae93c984702c7
---

 doc/APIchanges                |  4 +++
 libavutil/imgutils.c          | 75 +++++++++++++++++++++++++++++++++++--------
 libavutil/imgutils.h          | 18 +++++++++++
 libavutil/imgutils_internal.h | 30 +++++++++++++++++
 libavutil/version.h           |  2 +-
 libavutil/x86/Makefile        |  2 ++
 libavutil/x86/imgutils.asm    | 53 ++++++++++++++++++++++++++++++
 libavutil/x86/imgutils_init.c | 49 ++++++++++++++++++++++++++++
 8 files changed, 219 insertions(+), 14 deletions(-)

diff --git a/doc/APIchanges b/doc/APIchanges
index 6e18767..436fb71 100644
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@ -15,6 +15,10 @@ libavutil:     2015-08-28
 
 API changes, most recent first:
 
+2016-03-20 - xxxxxxx - lavu 55.50.100 / 55.21.0 - imgutils.h
+  Add av_image_copy_uc_from(), a version of av_image_copy() for copying
+  from GPU mapped memory.
+
 2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
   Add AV_PIX_FMT_FLAG_BAYER pixel format flag.
 
diff --git a/libavutil/imgutils.c b/libavutil/imgutils.c
index cc410ab..f8f2244 100644
--- a/libavutil/imgutils.c
+++ b/libavutil/imgutils.c
@@ -24,6 +24,7 @@
 #include "avassert.h"
 #include "common.h"
 #include "imgutils.h"
+#include "imgutils_internal.h"
 #include "internal.h"
 #include "intreadwrite.h"
 #include "log.h"
@@ -303,9 +304,9 @@ int av_image_check_sar(unsigned int w, unsigned int h, 
AVRational sar)
     return AVERROR(EINVAL);
 }
 
-void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
-                         const uint8_t *src, int src_linesize,
-                         int bytewidth, int height)
+static void image_copy_plane(uint8_t       *dst, ptrdiff_t dst_linesize,
+                             const uint8_t *src, ptrdiff_t src_linesize,
+                             ptrdiff_t bytewidth, int height)
 {
     if (!dst || !src)
         return;
@@ -318,9 +319,33 @@ void av_image_copy_plane(uint8_t       *dst, int 
dst_linesize,
     }
 }
 
-void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
-                   const uint8_t *src_data[4], const int src_linesizes[4],
-                   enum AVPixelFormat pix_fmt, int width, int height)
+static void image_copy_plane_uc_from(uint8_t       *dst, ptrdiff_t 
dst_linesize,
+                                     const uint8_t *src, ptrdiff_t 
src_linesize,
+                                     ptrdiff_t bytewidth, int height)
+{
+    int ret = -1;
+
+#if ARCH_X86
+    ret = ff_image_copy_plane_uc_from_x86(dst, dst_linesize, src, src_linesize,
+                                          bytewidth, height);
+#endif
+
+    if (ret < 0)
+        image_copy_plane(dst, dst_linesize, src, src_linesize, bytewidth, 
height);
+}
+
+void av_image_copy_plane(uint8_t       *dst, int dst_linesize,
+                         const uint8_t *src, int src_linesize,
+                         int bytewidth, int height)
+{
+    image_copy_plane(dst, dst_linesize, src, src_linesize, bytewidth, height);
+}
+
+static void image_copy(uint8_t *dst_data[4], const ptrdiff_t dst_linesizes[4],
+                       const uint8_t *src_data[4], const ptrdiff_t 
src_linesizes[4],
+                       enum AVPixelFormat pix_fmt, int width, int height,
+                       void (*copy_plane)(uint8_t *, ptrdiff_t, const uint8_t 
*,
+                                          ptrdiff_t, ptrdiff_t, int))
 {
     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
 
@@ -329,9 +354,9 @@ void av_image_copy(uint8_t *dst_data[4], int 
dst_linesizes[4],
 
     if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
         desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) {
-        av_image_copy_plane(dst_data[0], dst_linesizes[0],
-                            src_data[0], src_linesizes[0],
-                            width, height);
+        copy_plane(dst_data[0], dst_linesizes[0],
+                   src_data[0], src_linesizes[0],
+                   width, height);
         /* copy the palette */
         memcpy(dst_data[1], src_data[1], 4*256);
     } else {
@@ -342,7 +367,7 @@ void av_image_copy(uint8_t *dst_data[4], int 
dst_linesizes[4],
 
         for (i = 0; i < planes_nb; i++) {
             int h = height;
-            int bwidth = av_image_get_linesize(pix_fmt, width, i);
+            ptrdiff_t bwidth = av_image_get_linesize(pix_fmt, width, i);
             if (bwidth < 0) {
                 av_log(NULL, AV_LOG_ERROR, "av_image_get_linesize failed\n");
                 return;
@@ -350,13 +375,37 @@ void av_image_copy(uint8_t *dst_data[4], int 
dst_linesizes[4],
             if (i == 1 || i == 2) {
                 h = AV_CEIL_RSHIFT(height, desc->log2_chroma_h);
             }
-            av_image_copy_plane(dst_data[i], dst_linesizes[i],
-                                src_data[i], src_linesizes[i],
-                                bwidth, h);
+            copy_plane(dst_data[i], dst_linesizes[i],
+                       src_data[i], src_linesizes[i],
+                       bwidth, h);
         }
     }
 }
 
+void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4],
+                   const uint8_t *src_data[4], const int src_linesizes[4],
+                   enum AVPixelFormat pix_fmt, int width, int height)
+{
+    ptrdiff_t dst_linesizes1[4], src_linesizes1[4];
+    int i;
+
+    for (i = 0; i < 4; i++) {
+        dst_linesizes1[i] = dst_linesizes[i];
+        src_linesizes1[i] = src_linesizes[i];
+    }
+
+    image_copy(dst_data, dst_linesizes1, src_data, src_linesizes1, pix_fmt,
+               width, height, image_copy_plane);
+}
+
+void av_image_copy_uc_from(uint8_t *dst_data[4], const ptrdiff_t 
dst_linesizes[4],
+                           const uint8_t *src_data[4], const ptrdiff_t 
src_linesizes[4],
+                           enum AVPixelFormat pix_fmt, int width, int height)
+{
+    image_copy(dst_data, dst_linesizes, src_data, src_linesizes, pix_fmt,
+               width, height, image_copy_plane_uc_from);
+}
+
 int av_image_fill_arrays(uint8_t *dst_data[4], int dst_linesize[4],
                          const uint8_t *src, enum AVPixelFormat pix_fmt,
                          int width, int height, int align)
diff --git a/libavutil/imgutils.h b/libavutil/imgutils.h
index 40aee8b..a4a5efc 100644
--- a/libavutil/imgutils.h
+++ b/libavutil/imgutils.h
@@ -121,6 +121,24 @@ void av_image_copy(uint8_t *dst_data[4], int 
dst_linesizes[4],
                    enum AVPixelFormat pix_fmt, int width, int height);
 
 /**
+ * Copy image data located in uncacheable (e.g. GPU mapped) memory. Where
+ * available, this function will use special functionality for reading from 
such
+ * memory, which may result in greatly improved performance compared to plain
+ * av_image_copy().
+ *
+ * The data pointers and the linesizes must be aligned to the maximum required
+ * by the CPU architecture.
+ *
+ * @note The linesize parameters have the type ptrdiff_t here, while they are
+ *       int for av_image_copy().
+ * @note On x86, the linesizes currently need to be aligned to the cacheline
+ *       size (i.e. 64) to get improved performance.
+ */
+void av_image_copy_uc_from(uint8_t *dst_data[4],       const ptrdiff_t 
dst_linesizes[4],
+                           const uint8_t *src_data[4], const ptrdiff_t 
src_linesizes[4],
+                           enum AVPixelFormat pix_fmt, int width, int height);
+
+/**
  * Setup the data pointers and linesizes based on the specified image
  * parameters and the provided array.
  *
diff --git a/libavutil/imgutils_internal.h b/libavutil/imgutils_internal.h
new file mode 100644
index 0000000..d515858
--- /dev/null
+++ b/libavutil/imgutils_internal.h
@@ -0,0 +1,30 @@
+/*
+ * 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 AVUTIL_IMGUTILS_INTERNAL_H
+#define AVUTIL_IMGUTILS_INTERNAL_H
+
+#include <stddef.h>
+#include <stdint.h>
+
+int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t dst_linesize,
+                                    const uint8_t *src, ptrdiff_t src_linesize,
+                                    ptrdiff_t bytewidth, int height);
+
+
+#endif /* AVUTIL_IMGUTILS_INTERNAL_H */
diff --git a/libavutil/version.h b/libavutil/version.h
index 25925b9..d50f92c 100644
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@ -79,7 +79,7 @@
  */
 
 #define LIBAVUTIL_VERSION_MAJOR  55
-#define LIBAVUTIL_VERSION_MINOR  49
+#define LIBAVUTIL_VERSION_MINOR  50
 #define LIBAVUTIL_VERSION_MICRO 100
 
 #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
diff --git a/libavutil/x86/Makefile b/libavutil/x86/Makefile
index 94d8832..2b0ba16 100644
--- a/libavutil/x86/Makefile
+++ b/libavutil/x86/Makefile
@@ -1,6 +1,7 @@
 OBJS += x86/cpu.o                                                       \
         x86/fixed_dsp_init.o                                            \
         x86/float_dsp_init.o                                            \
+        x86/imgutils_init.o                                             \
         x86/lls_init.o                                                  \
 
 OBJS-$(CONFIG_PIXELUTILS) += x86/pixelutils_init.o                      \
@@ -11,6 +12,7 @@ YASM-OBJS += x86/cpuid.o                                      
          \
              $(EMMS_OBJS__yes_)                                      \
              x86/fixed_dsp.o                                            \
              x86/float_dsp.o                                            \
+             x86/imgutils.o                                             \
              x86/lls.o                                                  \
 
 YASM-OBJS-$(CONFIG_PIXELUTILS) += x86/pixelutils.o                      \
diff --git a/libavutil/x86/imgutils.asm b/libavutil/x86/imgutils.asm
new file mode 100644
index 0000000..f5ebc0f
--- /dev/null
+++ b/libavutil/x86/imgutils.asm
@@ -0,0 +1,53 @@
+;*****************************************************************************
+;* Copyright 2016 Anton Khirnov
+;*
+;* 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
+
+INIT_XMM sse4
+cglobal image_copy_plane_uc_from, 6, 7, 4, dst, dst_linesize, src, 
src_linesize, bw, height, rowpos
+    add dstq, bwq
+    add srcq, bwq
+    neg bwq
+
+.row_start
+    mov rowposq, bwq
+
+.loop
+    movntdqa m0, [srcq + rowposq + 0 * mmsize]
+    movntdqa m1, [srcq + rowposq + 1 * mmsize]
+    movntdqa m2, [srcq + rowposq + 2 * mmsize]
+    movntdqa m3, [srcq + rowposq + 3 * mmsize]
+
+    mova [dstq + rowposq + 0 * mmsize], m0
+    mova [dstq + rowposq + 1 * mmsize], m1
+    mova [dstq + rowposq + 2 * mmsize], m2
+    mova [dstq + rowposq + 3 * mmsize], m3
+
+    add rowposq, 4 * mmsize
+    jnz .loop
+
+    add srcq, src_linesizeq
+    add dstq, dst_linesizeq
+    dec heightd
+    jnz .row_start
+
+    RET
diff --git a/libavutil/x86/imgutils_init.c b/libavutil/x86/imgutils_init.c
new file mode 100644
index 0000000..4ea3982
--- /dev/null
+++ b/libavutil/x86/imgutils_init.c
@@ -0,0 +1,49 @@
+/*
+ * 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 <stddef.h>
+#include <stdint.h>
+
+#include "libavutil/cpu.h"
+#include "libavutil/error.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/imgutils_internal.h"
+#include "libavutil/internal.h"
+
+#include "cpu.h"
+
+void ff_image_copy_plane_uc_from_sse4(uint8_t *dst, ptrdiff_t dst_linesize,
+                                      const uint8_t *src, ptrdiff_t 
src_linesize,
+                                      ptrdiff_t bytewidth, int height);
+
+int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t dst_linesize,
+                                    const uint8_t *src, ptrdiff_t src_linesize,
+                                    ptrdiff_t bytewidth, int height)
+{
+    int cpu_flags = av_get_cpu_flags();
+    ptrdiff_t bw_aligned = FFALIGN(bytewidth, 64);
+
+    if (EXTERNAL_SSE4(cpu_flags) &&
+        bw_aligned <= dst_linesize && bw_aligned <= src_linesize)
+        ff_image_copy_plane_uc_from_sse4(dst, dst_linesize, src, src_linesize,
+                                         bw_aligned, height);
+    else
+        return AVERROR(ENOSYS);
+
+    return 0;
+}


======================================================================

diff --cc doc/APIchanges
index 6e18767,a4e418a..436fb71
--- a/doc/APIchanges
+++ b/doc/APIchanges
@@@ -15,43 -13,11 +15,47 @@@ libavutil:     2015-08-2
  
  API changes, most recent first:
  
 -2016-08-24 - xxxxxxx - lavu 55.21.0 - imgutils.h
++2016-03-20 - xxxxxxx - lavu 55.50.100 / 55.21.0 - imgutils.h
+   Add av_image_copy_uc_from(), a version of av_image_copy() for copying
+   from GPU mapped memory.
+ 
 -2016-xx-xx - xxxxxxx - lavc 59.26.0 - vaapi.h
 +2017-03-20 - 9c2436e - lavu 55.49.100 - pixdesc.h
 +  Add AV_PIX_FMT_FLAG_BAYER pixel format flag.
 +
 +2017-03-18 - xxxxxxx - lavfi 6.77.100 - avfilter.h
 +  Deprecate AVFilterGraph.resample_lavr_opts
 +  It's never been used by avfilter nor passed to anything.
 +
 +2017-02-10 - xxxxxxx - lavu 55.48.100 / 55.33.0 - spherical.h
 +  Add AV_SPHERICAL_EQUIRECTANGULAR_TILE, av_spherical_tile_bounds(),
 +  and projection-specific properties (bound_left, bound_top, bound_right,
 +  bound_bottom, padding) to AVSphericalMapping.
 +
 +2017-03-02 - xxxxxxx - lavc 57.81.104 - videotoolbox.h
 +  AVVideotoolboxContext.cv_pix_fmt_type can now be set to 0 to output the
 +  native decoder format. (The default value is not changed.)
 +
 +2017-03-02 - xxxxxxx - lavu 55.47.101, lavc 57.81.102, lavf 57.66.103
 +  Remove requirement to use AVOption or accessors to access certain fields
 +  in AVFrame, AVCodecContext, and AVFormatContext that were previously
 +  documented as "no direct access" allowed.
 +
 +2017-02-13 - xxxxxxx - lavc 57.80.100 - avcodec.h
 +  Add AVCodecContext.hw_device_ctx.
 +
 +2017-02-11 - xxxxxxx - lavu 55.47.100 - frame.h
 +  Add AVFrame.opaque_ref.
 +
 +2017-01-31 - xxxxxxx - lavu 55.46.100 / 55.20.0 - cpu.h
 +  Add AV_CPU_FLAG_SSSE3SLOW.
 +
 +2017-01-24 - xxxxxxx - lavu 55.45.100 - channel_layout.h
 +  Add av_get_extended_channel_layout()
 +
 +2017-01-22 - xxxxxxx - lavu 55.44.100 - lfg.h
 +  Add av_lfg_init_from_data().
 +
 +2017-01-xx - xxxxxxx - lavc 57.74.100 - vaapi.h
    Deprecate struct vaapi_context and the vaapi.h installed header.
    Callers should set AVCodecContext.hw_frames_ctx instead.
  
diff --cc libavutil/imgutils.c
index cc410ab,20d06ec..f8f2244
--- a/libavutil/imgutils.c
+++ b/libavutil/imgutils.c
@@@ -21,9 -21,9 +21,10 @@@
   * misc image utilities
   */
  
 +#include "avassert.h"
  #include "common.h"
  #include "imgutils.h"
+ #include "imgutils_internal.h"
  #include "internal.h"
  #include "intreadwrite.h"
  #include "log.h"
@@@ -342,11 -314,7 +367,11 @@@ static void image_copy(uint8_t *dst_dat
  
          for (i = 0; i < planes_nb; i++) {
              int h = height;
-             int bwidth = av_image_get_linesize(pix_fmt, width, i);
+             ptrdiff_t bwidth = av_image_get_linesize(pix_fmt, width, i);
 +            if (bwidth < 0) {
 +                av_log(NULL, AV_LOG_ERROR, "av_image_get_linesize failed\n");
 +                return;
 +            }
              if (i == 1 || i == 2) {
                  h = AV_CEIL_RSHIFT(height, desc->log2_chroma_h);
              }
diff --cc libavutil/imgutils_internal.h
index 0000000,7a932a5..d515858
mode 000000,100644..100644
--- a/libavutil/imgutils_internal.h
+++ b/libavutil/imgutils_internal.h
@@@ -1,0 -1,30 +1,30 @@@
+ /*
 - * This file is part of Libav.
++ * This file is part of FFmpeg.
+  *
 - * Libav is free software; you can redistribute it and/or
++ * 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.
+  *
 - * Libav is distributed in the hope that it will be useful,
++ * 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 Libav; if not, write to the Free Software
++ * License along with FFmpeg; if not, write to the Free Software
+  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 
USA
+  */
+ 
+ #ifndef AVUTIL_IMGUTILS_INTERNAL_H
+ #define AVUTIL_IMGUTILS_INTERNAL_H
+ 
+ #include <stddef.h>
+ #include <stdint.h>
+ 
+ int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t 
dst_linesize,
+                                     const uint8_t *src, ptrdiff_t 
src_linesize,
+                                     ptrdiff_t bytewidth, int height);
+ 
+ 
+ #endif /* AVUTIL_IMGUTILS_INTERNAL_H */
diff --cc libavutil/version.h
index 25925b9,f63dfa5..d50f92c
--- a/libavutil/version.h
+++ b/libavutil/version.h
@@@ -78,9 -53,9 +78,9 @@@
   * @{
   */
  
 -#define LIBAVUTIL_VERSION_MAJOR 55
 -#define LIBAVUTIL_VERSION_MINOR 21
 -#define LIBAVUTIL_VERSION_MICRO  0
 +#define LIBAVUTIL_VERSION_MAJOR  55
- #define LIBAVUTIL_VERSION_MINOR  49
++#define LIBAVUTIL_VERSION_MINOR  50
 +#define LIBAVUTIL_VERSION_MICRO 100
  
  #define LIBAVUTIL_VERSION_INT   AV_VERSION_INT(LIBAVUTIL_VERSION_MAJOR, \
                                                 LIBAVUTIL_VERSION_MINOR, \
diff --cc libavutil/x86/Makefile
index 94d8832,ffee43b..2b0ba16
--- a/libavutil/x86/Makefile
+++ b/libavutil/x86/Makefile
@@@ -1,16 -1,10 +1,18 @@@
  OBJS += x86/cpu.o                                                       \
 +        x86/fixed_dsp_init.o                                            \
          x86/float_dsp_init.o                                            \
+         x86/imgutils_init.o                                             \
          x86/lls_init.o                                                  \
  
 +OBJS-$(CONFIG_PIXELUTILS) += x86/pixelutils_init.o                      \
 +
 +EMMS_OBJS_$(HAVE_MMX_INLINE)_$(HAVE_MMX_EXTERNAL)_$(HAVE_MM_EMPTY) = 
x86/emms.o
 +
  YASM-OBJS += x86/cpuid.o                                                \
 -             x86/emms.o                                                 \
 +             $(EMMS_OBJS__yes_)                                      \
 +             x86/fixed_dsp.o                                            \
               x86/float_dsp.o                                            \
+              x86/imgutils.o                                             \
               x86/lls.o                                                  \
 +
 +YASM-OBJS-$(CONFIG_PIXELUTILS) += x86/pixelutils.o                      \
diff --cc libavutil/x86/imgutils.asm
index 0000000,9c1e940..f5ebc0f
mode 000000,100644..100644
--- a/libavutil/x86/imgutils.asm
+++ b/libavutil/x86/imgutils.asm
@@@ -1,0 -1,53 +1,53 @@@
+ ;*****************************************************************************
+ ;* Copyright 2016 Anton Khirnov
+ ;*
 -;* This file is part of Libav.
++;* This file is part of FFmpeg.
+ ;*
 -;* Libav is free software; you can redistribute it and/or
++;* 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.
+ ;*
 -;* Libav is distributed in the hope that it will be useful,
++;* 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 Libav; if not, write to the Free Software
++;* 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
+ 
+ INIT_XMM sse4
+ cglobal image_copy_plane_uc_from, 6, 7, 4, dst, dst_linesize, src, 
src_linesize, bw, height, rowpos
+     add dstq, bwq
+     add srcq, bwq
+     neg bwq
+ 
+ .row_start
+     mov rowposq, bwq
+ 
+ .loop
+     movntdqa m0, [srcq + rowposq + 0 * mmsize]
+     movntdqa m1, [srcq + rowposq + 1 * mmsize]
+     movntdqa m2, [srcq + rowposq + 2 * mmsize]
+     movntdqa m3, [srcq + rowposq + 3 * mmsize]
+ 
+     mova [dstq + rowposq + 0 * mmsize], m0
+     mova [dstq + rowposq + 1 * mmsize], m1
+     mova [dstq + rowposq + 2 * mmsize], m2
+     mova [dstq + rowposq + 3 * mmsize], m3
+ 
+     add rowposq, 4 * mmsize
+     jnz .loop
+ 
+     add srcq, src_linesizeq
+     add dstq, dst_linesizeq
+     dec heightd
+     jnz .row_start
+ 
+     RET
diff --cc libavutil/x86/imgutils_init.c
index 0000000,20ee9ab..4ea3982
mode 000000,100644..100644
--- a/libavutil/x86/imgutils_init.c
+++ b/libavutil/x86/imgutils_init.c
@@@ -1,0 -1,49 +1,49 @@@
+ /*
 - * This file is part of Libav.
++ * This file is part of FFmpeg.
+  *
 - * Libav is free software; you can redistribute it and/or
++ * 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.
+  *
 - * Libav is distributed in the hope that it will be useful,
++ * 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 Libav; if not, write to the Free Software
++ * License along with FFmpeg; if not, write to the Free Software
+  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 
USA
+  */
+ 
+ #include <stddef.h>
+ #include <stdint.h>
+ 
+ #include "libavutil/cpu.h"
+ #include "libavutil/error.h"
+ #include "libavutil/imgutils.h"
+ #include "libavutil/imgutils_internal.h"
+ #include "libavutil/internal.h"
+ 
+ #include "cpu.h"
+ 
+ void ff_image_copy_plane_uc_from_sse4(uint8_t *dst, ptrdiff_t dst_linesize,
+                                       const uint8_t *src, ptrdiff_t 
src_linesize,
+                                       ptrdiff_t bytewidth, int height);
+ 
+ int ff_image_copy_plane_uc_from_x86(uint8_t       *dst, ptrdiff_t 
dst_linesize,
+                                     const uint8_t *src, ptrdiff_t 
src_linesize,
+                                     ptrdiff_t bytewidth, int height)
+ {
+     int cpu_flags = av_get_cpu_flags();
+     ptrdiff_t bw_aligned = FFALIGN(bytewidth, 64);
+ 
+     if (EXTERNAL_SSE4(cpu_flags) &&
+         bw_aligned <= dst_linesize && bw_aligned <= src_linesize)
+         ff_image_copy_plane_uc_from_sse4(dst, dst_linesize, src, src_linesize,
+                                          bw_aligned, height);
+     else
+         return AVERROR(ENOSYS);
+ 
+     return 0;
+ }

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