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Import aom library
This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
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trav90
Roy Tam
parent
eb8cd130a8
commit
edc8d83307
989 changed files with 470949 additions and 0 deletions
192
third_party/aom/av1/encoder/extend.c
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third_party/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 "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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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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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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#if CONFIG_HIGHBITDEPTH
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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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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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#endif // CONFIG_HIGHBITDEPTH
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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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// Altref filtering assumes 16 pixel extension
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const int et_y = 16;
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const int el_y = 16;
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// Motion estimation may use src block variance with the block size up
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// to 64x64, so the right and bottom need to be extended to 64 multiple
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// or up to 16, whichever is greater.
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const int er_y =
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AOMMAX(src->y_width + 16, ALIGN_POWER_OF_TWO(src->y_width, 6)) -
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src->y_crop_width;
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const int eb_y =
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AOMMAX(src->y_height + 16, 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->uv_width != src->y_width);
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const int uv_height_subsampling = (src->uv_height != src->y_height);
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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 CONFIG_HIGHBITDEPTH
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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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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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return;
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}
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#endif // CONFIG_HIGHBITDEPTH
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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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copy_and_extend_plane(src->u_buffer, src->uv_stride, dst->u_buffer,
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dst->uv_stride, src->uv_crop_width, src->uv_crop_height,
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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, src->uv_crop_height,
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et_uv, el_uv, eb_uv, er_uv);
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}
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void av1_copy_and_extend_frame_with_rect(const YV12_BUFFER_CONFIG *src,
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YV12_BUFFER_CONFIG *dst, int srcy,
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int srcx, int srch, int srcw) {
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// If the side is not touching the bounder then don't extend.
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const int et_y = srcy ? 0 : dst->border;
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const int el_y = srcx ? 0 : dst->border;
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const int eb_y = srcy + srch != src->y_height
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? 0
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: dst->border + dst->y_height - src->y_height;
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const int er_y = srcx + srcw != src->y_width
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? 0
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: dst->border + dst->y_width - src->y_width;
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const int src_y_offset = srcy * src->y_stride + srcx;
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const int dst_y_offset = srcy * dst->y_stride + srcx;
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const int et_uv = ROUND_POWER_OF_TWO(et_y, 1);
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const int el_uv = ROUND_POWER_OF_TWO(el_y, 1);
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const int eb_uv = ROUND_POWER_OF_TWO(eb_y, 1);
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const int er_uv = ROUND_POWER_OF_TWO(er_y, 1);
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const int src_uv_offset = ((srcy * src->uv_stride) >> 1) + (srcx >> 1);
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const int dst_uv_offset = ((srcy * dst->uv_stride) >> 1) + (srcx >> 1);
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const int srch_uv = ROUND_POWER_OF_TWO(srch, 1);
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const int srcw_uv = ROUND_POWER_OF_TWO(srcw, 1);
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copy_and_extend_plane(src->y_buffer + src_y_offset, src->y_stride,
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dst->y_buffer + dst_y_offset, dst->y_stride, srcw, srch,
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et_y, el_y, eb_y, er_y);
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copy_and_extend_plane(src->u_buffer + src_uv_offset, src->uv_stride,
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dst->u_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
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srch_uv, et_uv, el_uv, eb_uv, er_uv);
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copy_and_extend_plane(src->v_buffer + src_uv_offset, src->uv_stride,
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dst->v_buffer + dst_uv_offset, dst->uv_stride, srcw_uv,
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srch_uv, et_uv, el_uv, eb_uv, er_uv);
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}
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