Coverage Report

Created: 2022-08-24 06:17

/src/aom/av1/encoder/extend.c
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/*
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 * Copyright (c) 2016, Alliance for Open Media. All rights reserved
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 *
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 * This source code is subject to the terms of the BSD 2 Clause License and
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 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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 * was not distributed with this source code in the LICENSE file, you can
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 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
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 * Media Patent License 1.0 was not distributed with this source code in the
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 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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 */
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#include <assert.h>
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#include "aom_dsp/aom_dsp_common.h"
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#include "aom_mem/aom_mem.h"
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#include "aom_ports/mem.h"
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#include "av1/common/common.h"
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#include "av1/encoder/extend.h"
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static void copy_and_extend_plane(const uint8_t *src, int src_pitch,
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                                  uint8_t *dst, int dst_pitch, int w, int h,
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                                  int extend_top, int extend_left,
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0
                                  int extend_bottom, int extend_right) {
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  int i, linesize;
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  // copy the left and right most columns out
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  const uint8_t *src_ptr1 = src;
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  const uint8_t *src_ptr2 = src + w - 1;
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  uint8_t *dst_ptr1 = dst - extend_left;
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  uint8_t *dst_ptr2 = dst + w;
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  for (i = 0; i < h; i++) {
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    memset(dst_ptr1, src_ptr1[0], extend_left);
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    memcpy(dst_ptr1 + extend_left, src_ptr1, w);
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    memset(dst_ptr2, src_ptr2[0], extend_right);
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    src_ptr1 += src_pitch;
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    src_ptr2 += src_pitch;
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    dst_ptr1 += dst_pitch;
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    dst_ptr2 += dst_pitch;
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  }
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  // Now copy the top and bottom lines into each line of the respective
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  // borders
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  src_ptr1 = dst - extend_left;
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  src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
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  dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
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  dst_ptr2 = dst + dst_pitch * (h)-extend_left;
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  linesize = extend_left + extend_right + w;
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  assert(linesize <= dst_pitch);
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  for (i = 0; i < extend_top; i++) {
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    memcpy(dst_ptr1, src_ptr1, linesize);
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    dst_ptr1 += dst_pitch;
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  }
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  for (i = 0; i < extend_bottom; i++) {
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    memcpy(dst_ptr2, src_ptr2, linesize);
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    dst_ptr2 += dst_pitch;
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  }
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}
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static void highbd_copy_and_extend_plane(const uint8_t *src8, int src_pitch,
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                                         uint8_t *dst8, int dst_pitch, int w,
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                                         int h, int extend_top, int extend_left,
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                                         int extend_bottom, int extend_right) {
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  int i, linesize;
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  uint16_t *src = CONVERT_TO_SHORTPTR(src8);
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  uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
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  // copy the left and right most columns out
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  const uint16_t *src_ptr1 = src;
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  const uint16_t *src_ptr2 = src + w - 1;
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  uint16_t *dst_ptr1 = dst - extend_left;
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  uint16_t *dst_ptr2 = dst + w;
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  for (i = 0; i < h; i++) {
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    aom_memset16(dst_ptr1, src_ptr1[0], extend_left);
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    memcpy(dst_ptr1 + extend_left, src_ptr1, w * sizeof(src_ptr1[0]));
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    aom_memset16(dst_ptr2, src_ptr2[0], extend_right);
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    src_ptr1 += src_pitch;
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    src_ptr2 += src_pitch;
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    dst_ptr1 += dst_pitch;
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    dst_ptr2 += dst_pitch;
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  }
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  // Now copy the top and bottom lines into each line of the respective
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  // borders
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  src_ptr1 = dst - extend_left;
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  src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
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  dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
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  dst_ptr2 = dst + dst_pitch * (h)-extend_left;
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  linesize = extend_left + extend_right + w;
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  assert(linesize <= dst_pitch);
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  for (i = 0; i < extend_top; i++) {
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    memcpy(dst_ptr1, src_ptr1, linesize * sizeof(src_ptr1[0]));
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    dst_ptr1 += dst_pitch;
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  }
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  for (i = 0; i < extend_bottom; i++) {
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    memcpy(dst_ptr2, src_ptr2, linesize * sizeof(src_ptr2[0]));
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    dst_ptr2 += dst_pitch;
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  }
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}
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void av1_copy_and_extend_frame(const YV12_BUFFER_CONFIG *src,
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                               YV12_BUFFER_CONFIG *dst) {
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  // Extend src frame in buffer
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  const int et_y = dst->border;
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  const int el_y = dst->border;
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  const int er_y =
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      AOMMAX(src->y_width + dst->border, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
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      src->y_crop_width;
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  const int eb_y = AOMMAX(src->y_height + dst->border,
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                          ALIGN_POWER_OF_TWO(src->y_height, 6)) -
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                   src->y_crop_height;
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  const int uv_width_subsampling = src->subsampling_x;
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  const int uv_height_subsampling = src->subsampling_y;
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  const int et_uv = et_y >> uv_height_subsampling;
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  const int el_uv = el_y >> uv_width_subsampling;
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  const int eb_uv = eb_y >> uv_height_subsampling;
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  const int er_uv = er_y >> uv_width_subsampling;
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  if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
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    highbd_copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
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                                 dst->y_stride, src->y_crop_width,
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                                 src->y_crop_height, et_y, el_y, eb_y, er_y);
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    if (!src->monochrome) {
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      highbd_copy_and_extend_plane(
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          src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride,
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          src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
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      highbd_copy_and_extend_plane(
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          src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
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          src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
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    }
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    return;
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  }
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  copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
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                        dst->y_stride, src->y_crop_width, src->y_crop_height,
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                        et_y, el_y, eb_y, er_y);
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  if (!src->monochrome) {
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    copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
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                          dst->uv_stride, src->uv_crop_width,
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                          src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
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    copy_and_extend_plane(src->v_buffer, src->uv_stride, dst->v_buffer,
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                          dst->uv_stride, src->uv_crop_width,
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                          src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
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  }
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}