The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/media/libvpx/vp8/encoder/segmentation.c	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,66 @@
     1.4 +/*
     1.5 + *  Copyright (c) 2010 The WebM project authors. All Rights Reserved.
     1.6 + *
     1.7 + *  Use of this source code is governed by a BSD-style license
     1.8 + *  that can be found in the LICENSE file in the root of the source
     1.9 + *  tree. An additional intellectual property rights grant can be found
    1.10 + *  in the file PATENTS.  All contributing project authors may
    1.11 + *  be found in the AUTHORS file in the root of the source tree.
    1.12 + */
    1.13 +
    1.14 +
    1.15 +#include "segmentation.h"
    1.16 +#include "vpx_mem/vpx_mem.h"
    1.17 +
    1.18 +void vp8_update_gf_useage_maps(VP8_COMP *cpi, VP8_COMMON *cm, MACROBLOCK *x)
    1.19 +{
    1.20 +    int mb_row, mb_col;
    1.21 +
    1.22 +    MODE_INFO *this_mb_mode_info = cm->mi;
    1.23 +
    1.24 +    x->gf_active_ptr = (signed char *)cpi->gf_active_flags;
    1.25 +
    1.26 +    if ((cm->frame_type == KEY_FRAME) || (cm->refresh_golden_frame))
    1.27 +    {
    1.28 +        /* Reset Gf useage monitors */
    1.29 +        vpx_memset(cpi->gf_active_flags, 1, (cm->mb_rows * cm->mb_cols));
    1.30 +        cpi->gf_active_count = cm->mb_rows * cm->mb_cols;
    1.31 +    }
    1.32 +    else
    1.33 +    {
    1.34 +        /* for each macroblock row in image */
    1.35 +        for (mb_row = 0; mb_row < cm->mb_rows; mb_row++)
    1.36 +        {
    1.37 +            /* for each macroblock col in image */
    1.38 +            for (mb_col = 0; mb_col < cm->mb_cols; mb_col++)
    1.39 +            {
    1.40 +
    1.41 +                /* If using golden then set GF active flag if not already set.
    1.42 +                 * If using last frame 0,0 mode then leave flag as it is
    1.43 +                 * else if using non 0,0 motion or intra modes then clear
    1.44 +                 * flag if it is currently set
    1.45 +                 */
    1.46 +                if ((this_mb_mode_info->mbmi.ref_frame == GOLDEN_FRAME) || (this_mb_mode_info->mbmi.ref_frame == ALTREF_FRAME))
    1.47 +                {
    1.48 +                    if (*(x->gf_active_ptr) == 0)
    1.49 +                    {
    1.50 +                        *(x->gf_active_ptr) = 1;
    1.51 +                        cpi->gf_active_count ++;
    1.52 +                    }
    1.53 +                }
    1.54 +                else if ((this_mb_mode_info->mbmi.mode != ZEROMV) && *(x->gf_active_ptr))
    1.55 +                {
    1.56 +                    *(x->gf_active_ptr) = 0;
    1.57 +                    cpi->gf_active_count--;
    1.58 +                }
    1.59 +
    1.60 +                x->gf_active_ptr++;          /* Step onto next entry */
    1.61 +                this_mb_mode_info++;         /* skip to next mb */
    1.62 +
    1.63 +            }
    1.64 +
    1.65 +            /* this is to account for the border */
    1.66 +            this_mb_mode_info++;
    1.67 +        }
    1.68 +    }
    1.69 +}