/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <assert.h>
#include "aom_dsp/aom_dsp_common.h"
#include "aom_mem/aom_mem.h"
#include "aom_ports/mem.h"
#include "av1/common/common.h"
#include "av1/encoder/extend.h"
static void copy_and_extend_plane(
const uint8_t *src,
int src_pitch,
uint8_t *dst,
int dst_pitch,
int w,
int h,
int extend_top,
int extend_left,
int extend_bottom,
int extend_right,
int chroma_step) {
int i, linesize;
// copy the left and right most columns out
const uint8_t *src_ptr1 = src;
const uint8_t *src_ptr2 = src + (w - 1) * chroma_step;
uint8_t *dst_ptr1 = dst - extend_left;
uint8_t *dst_ptr2 = dst + w;
for (i = 0; i < h; i++) {
memset(dst_ptr1, src_ptr1[0], extend_left);
if (chroma_step == 1) {
memcpy(dst_ptr1 + extend_left, src_ptr1, w);
}
else {
for (
int j = 0; j < w; j++) {
dst_ptr1[extend_left + j] = src_ptr1[chroma_step * j];
}
}
memset(dst_ptr2, src_ptr2[0], extend_right);
src_ptr1 += src_pitch;
src_ptr2 += src_pitch;
dst_ptr1 += dst_pitch;
dst_ptr2 += dst_pitch;
}
// Now copy the top and bottom lines into each line of the respective
// borders
src_ptr1 = dst - extend_left;
src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
dst_ptr2 = dst + dst_pitch * (h)-extend_left;
linesize = extend_left + extend_right + w;
assert(linesize <= dst_pitch);
for (i = 0; i < extend_top; i++) {
memcpy(dst_ptr1, src_ptr1, linesize);
dst_ptr1 += dst_pitch;
}
for (i = 0; i < extend_bottom; i++) {
memcpy(dst_ptr2, src_ptr2, linesize);
dst_ptr2 += dst_pitch;
}
}
static void highbd_copy_and_extend_plane(
const uint8_t *src8,
int src_pitch,
uint8_t *dst8,
int dst_pitch,
int w,
int h,
int extend_top,
int extend_left,
int extend_bottom,
int extend_right) {
int i, linesize;
uint16_t *src = CONVERT_TO_SHORTPTR(src8);
uint16_t *dst = CONVERT_TO_SHORTPTR(dst8);
// copy the left and right most columns out
const uint16_t *src_ptr1 = src;
const uint16_t *src_ptr2 = src + w - 1;
uint16_t *dst_ptr1 = dst - extend_left;
uint16_t *dst_ptr2 = dst + w;
for (i = 0; i < h; i++) {
aom_memset16(dst_ptr1, src_ptr1[0], extend_left);
memcpy(dst_ptr1 + extend_left, src_ptr1, w *
sizeof(src_ptr1[0]));
aom_memset16(dst_ptr2, src_ptr2[0], extend_right);
src_ptr1 += src_pitch;
src_ptr2 += src_pitch;
dst_ptr1 += dst_pitch;
dst_ptr2 += dst_pitch;
}
// Now copy the top and bottom lines into each line of the respective
// borders
src_ptr1 = dst - extend_left;
src_ptr2 = dst + dst_pitch * (h - 1) - extend_left;
dst_ptr1 = dst + dst_pitch * (-extend_top) - extend_left;
dst_ptr2 = dst + dst_pitch * (h)-extend_left;
linesize = extend_left + extend_right + w;
assert(linesize <= dst_pitch);
for (i = 0; i < extend_top; i++) {
memcpy(dst_ptr1, src_ptr1, linesize *
sizeof(src_ptr1[0]));
dst_ptr1 += dst_pitch;
}
for (i = 0; i < extend_bottom; i++) {
memcpy(dst_ptr2, src_ptr2, linesize *
sizeof(src_ptr2[0]));
dst_ptr2 += dst_pitch;
}
}
void av1_copy_and_extend_frame(
const YV12_BUFFER_CONFIG *src,
YV12_BUFFER_CONFIG *dst) {
// Extend src frame in buffer
const int et_y = dst->border;
const int el_y = dst->border;
const int er_y =
AOMMAX(src->y_width + dst->border, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
src->y_crop_width;
const int eb_y = AOMMAX(src->y_height + dst->border,
ALIGN_POWER_OF_TWO(src->y_height, 6)) -
src->y_crop_height;
const int uv_width_subsampling = src->subsampling_x;
const int uv_height_subsampling = src->subsampling_y;
const int et_uv = et_y >> uv_height_subsampling;
const int el_uv = el_y >> uv_width_subsampling;
const int eb_uv = eb_y >> uv_height_subsampling;
const int er_uv = er_y >> uv_width_subsampling;
if (src->flags & YV12_FLAG_HIGHBITDEPTH) {
highbd_copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
dst->y_stride, src->y_crop_width,
src->y_crop_height, et_y, el_y, eb_y, er_y);
if (!src->monochrome) {
highbd_copy_and_extend_plane(
src->u_buffer, src->uv_stride, dst->u_buffer, dst->uv_stride,
src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
highbd_copy_and_extend_plane(
src->v_buffer, src->uv_stride, dst->v_buffer, dst->uv_stride,
src->uv_crop_width, src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv);
}
return;
}
copy_and_extend_plane(src->y_buffer, src->y_stride, dst->y_buffer,
dst->y_stride, src->y_crop_width, src->y_crop_height,
et_y, el_y, eb_y, er_y, 1);
if (!src->monochrome) {
// detect nv12 format
const int chroma_step = src->v_buffer ? 1 : 2;
const uint8_t *src_v_buffer =
src->v_buffer ? src->v_buffer : src->u_buffer + 1;
copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
dst->uv_stride, src->uv_crop_width,
src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv,
chroma_step);
copy_and_extend_plane(src_v_buffer, src->uv_stride, dst->v_buffer,
dst->uv_stride, src->uv_crop_width,
src->uv_crop_height, et_uv, el_uv, eb_uv, er_uv,
chroma_step);
}
}
