The Tor Browser: media/libvpx/vp8/encoder/arm/neon/picklpf

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /*

     2  *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.

     3  *

     4  *  Use of this source code is governed by a BSD-style license

     5  *  that can be found in the LICENSE file in the root of the source

     6  *  tree. An additional intellectual property rights grant can be found

     7  *  in the file PATENTS.  All contributing project authors may

     8  *  be found in the AUTHORS file in the root of the source tree.

     9  */

    11 #include "vp8/common/loopfilter.h"

    12 #include "vpx_scale/yv12config.h"

    14 extern void vp8_memcpy_partial_neon(unsigned char *dst_ptr,

    15                                     unsigned char *src_ptr,

    16                                     int sz);

    19 void vp8_yv12_copy_partial_frame_neon(YV12_BUFFER_CONFIG *src_ybc,

    20                                       YV12_BUFFER_CONFIG *dst_ybc)

    21 {

    22     unsigned char *src_y, *dst_y;

    23     int yheight;

    24     int ystride;

    25     int yoffset;

    26     int linestocopy;

    28     yheight  = src_ybc->y_height;

    29     ystride  = src_ybc->y_stride;

    31     /* number of MB rows to use in partial filtering */

    32     linestocopy = (yheight >> 4) / PARTIAL_FRAME_FRACTION;

    33     linestocopy = linestocopy ? linestocopy << 4 : 16;     /* 16 lines per MB */

    35     /* Copy extra 4 so that full filter context is available if filtering done

    36      * on the copied partial frame and not original. Partial filter does mb

    37      * filtering for top row also, which can modify3 pixels above.

    38      */

    39     linestocopy += 4;

    40     /* partial image starts at ~middle of frame (macroblock border) */

    41     yoffset  = ystride * (((yheight >> 5) * 16) - 4);

    42     src_y = src_ybc->y_buffer + yoffset;

    43     dst_y = dst_ybc->y_buffer + yoffset;

    45     vp8_memcpy_partial_neon(dst_y, src_y, ystride * linestocopy);

    46 }

The Tor Browser / file revision