| /* |
| * 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 <math.h> |
| #include <string.h> |
| |
| #include "config/aom_scale_rtcd.h" |
| |
| #include "aom/aom_integer.h" |
| #include "av1/common/av1_common_int.h" |
| #include "av1/common/cdef.h" |
| #include "av1/common/cdef_block.h" |
| #include "av1/common/reconinter.h" |
| |
| static int is_8x8_block_skip(MB_MODE_INFO **grid, int mi_row, int mi_col, |
| int mi_stride) { |
| MB_MODE_INFO **mbmi = grid + mi_row * mi_stride + mi_col; |
| for (int r = 0; r < mi_size_high[BLOCK_8X8]; ++r, mbmi += mi_stride) { |
| for (int c = 0; c < mi_size_wide[BLOCK_8X8]; ++c) { |
| if (!mbmi[c]->skip_txfm) return 0; |
| } |
| } |
| |
| return 1; |
| } |
| |
| int av1_cdef_compute_sb_list(const CommonModeInfoParams *const mi_params, |
| int mi_row, int mi_col, cdef_list *dlist, |
| BLOCK_SIZE bs) { |
| MB_MODE_INFO **grid = mi_params->mi_grid_base; |
| int maxc = mi_params->mi_cols - mi_col; |
| int maxr = mi_params->mi_rows - mi_row; |
| |
| if (bs == BLOCK_128X128 || bs == BLOCK_128X64) |
| maxc = AOMMIN(maxc, MI_SIZE_128X128); |
| else |
| maxc = AOMMIN(maxc, MI_SIZE_64X64); |
| if (bs == BLOCK_128X128 || bs == BLOCK_64X128) |
| maxr = AOMMIN(maxr, MI_SIZE_128X128); |
| else |
| maxr = AOMMIN(maxr, MI_SIZE_64X64); |
| |
| const int r_step = 2; // mi_size_high[BLOCK_8X8] |
| const int c_step = 2; // mi_size_wide[BLOCK_8X8] |
| const int r_shift = 1; |
| const int c_shift = 1; |
| int count = 0; |
| for (int r = 0; r < maxr; r += r_step) { |
| for (int c = 0; c < maxc; c += c_step) { |
| if (!is_8x8_block_skip(grid, mi_row + r, mi_col + c, |
| mi_params->mi_stride)) { |
| dlist[count].by = r >> r_shift; |
| dlist[count].bx = c >> c_shift; |
| count++; |
| } |
| } |
| } |
| return count; |
| } |
| |
| void cdef_copy_rect8_8bit_to_16bit_c(uint16_t *dst, int dstride, |
| const uint8_t *src, int sstride, int width, |
| int height) { |
| for (int i = 0; i < height; i++) { |
| for (int j = 0; j < width; j++) { |
| dst[i * dstride + j] = src[i * sstride + j]; |
| } |
| } |
| } |
| |
| void cdef_copy_rect8_16bit_to_16bit_c(uint16_t *dst, int dstride, |
| const uint16_t *src, int sstride, |
| int width, int height) { |
| for (int i = 0; i < height; i++) { |
| for (int j = 0; j < width; j++) { |
| dst[i * dstride + j] = src[i * sstride + j]; |
| } |
| } |
| } |
| |
| void av1_cdef_copy_sb8_16_lowbd(uint16_t *const dst, int dstride, |
| const uint8_t *src, int src_voffset, |
| int src_hoffset, int sstride, int vsize, |
| int hsize) { |
| const uint8_t *base = &src[src_voffset * sstride + src_hoffset]; |
| cdef_copy_rect8_8bit_to_16bit(dst, dstride, base, sstride, hsize, vsize); |
| } |
| |
| void av1_cdef_copy_sb8_16_highbd(uint16_t *const dst, int dstride, |
| const uint8_t *src, int src_voffset, |
| int src_hoffset, int sstride, int vsize, |
| int hsize) { |
| const uint16_t *base = |
| &CONVERT_TO_SHORTPTR(src)[src_voffset * sstride + src_hoffset]; |
| cdef_copy_rect8_16bit_to_16bit(dst, dstride, base, sstride, hsize, vsize); |
| } |
| |
| void av1_cdef_copy_sb8_16(const AV1_COMMON *const cm, uint16_t *const dst, |
| int dstride, const uint8_t *src, int src_voffset, |
| int src_hoffset, int sstride, int vsize, int hsize) { |
| if (cm->seq_params->use_highbitdepth) { |
| av1_cdef_copy_sb8_16_highbd(dst, dstride, src, src_voffset, src_hoffset, |
| sstride, vsize, hsize); |
| } else { |
| av1_cdef_copy_sb8_16_lowbd(dst, dstride, src, src_voffset, src_hoffset, |
| sstride, vsize, hsize); |
| } |
| } |
| |
| static INLINE void copy_rect(uint16_t *dst, int dstride, const uint16_t *src, |
| int sstride, int v, int h) { |
| for (int i = 0; i < v; i++) { |
| for (int j = 0; j < h; j++) { |
| dst[i * dstride + j] = src[i * sstride + j]; |
| } |
| } |
| } |
| |
| // Prepares intermediate input buffer for CDEF. |
| // Inputs: |
| // cm: Pointer to common structure. |
| // fb_info: Pointer to the CDEF block-level parameter structure. |
| // colbuf: Left column buffer for CDEF. |
| // cdef_left: Left block is filtered or not. |
| // fbc, fbr: col and row index of a block. |
| // plane: plane index Y/CB/CR. |
| // Returns: |
| // Nothing will be returned. |
| static void cdef_prepare_fb(const AV1_COMMON *const cm, CdefBlockInfo *fb_info, |
| uint16_t **const colbuf, const int cdef_left, |
| int fbc, int fbr, int plane) { |
| const CommonModeInfoParams *const mi_params = &cm->mi_params; |
| uint16_t *src = fb_info->src; |
| const int luma_stride = |
| ALIGN_POWER_OF_TWO(mi_params->mi_cols << MI_SIZE_LOG2, 4); |
| const int nvfb = (mi_params->mi_rows + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; |
| const int nhfb = (mi_params->mi_cols + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; |
| int cstart = 0; |
| if (!cdef_left) cstart = -CDEF_HBORDER; |
| int rend, cend; |
| const int nhb = |
| AOMMIN(MI_SIZE_64X64, mi_params->mi_cols - MI_SIZE_64X64 * fbc); |
| const int nvb = |
| AOMMIN(MI_SIZE_64X64, mi_params->mi_rows - MI_SIZE_64X64 * fbr); |
| const int hsize = nhb << fb_info->mi_wide_l2; |
| const int vsize = nvb << fb_info->mi_high_l2; |
| const uint16_t *top_linebuf = fb_info->top_linebuf[plane]; |
| const uint16_t *bot_linebuf = fb_info->bot_linebuf[plane]; |
| const int bot_offset = (vsize + CDEF_VBORDER) * CDEF_BSTRIDE; |
| const int stride = |
| luma_stride >> (plane == AOM_PLANE_Y ? 0 : cm->seq_params->subsampling_x); |
| |
| if (fbc == nhfb - 1) |
| cend = hsize; |
| else |
| cend = hsize + CDEF_HBORDER; |
| |
| if (fbr == nvfb - 1) |
| rend = vsize; |
| else |
| rend = vsize + CDEF_VBORDER; |
| |
| /* Copy in the pixels we need from the current superblock for |
| deringing.*/ |
| av1_cdef_copy_sb8_16( |
| cm, &src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER + cstart], |
| CDEF_BSTRIDE, fb_info->dst, fb_info->roffset, fb_info->coffset + cstart, |
| fb_info->dst_stride, vsize, cend - cstart); |
| |
| /* Copy in the pixels we need for the current superblock from bottom buffer.*/ |
| if (fbr < nvfb - 1) { |
| copy_rect(&src[bot_offset + CDEF_HBORDER], CDEF_BSTRIDE, |
| &bot_linebuf[fb_info->coffset], stride, CDEF_VBORDER, hsize); |
| } else { |
| fill_rect(&src[bot_offset + CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER, |
| hsize, CDEF_VERY_LARGE); |
| } |
| if (fbr < nvfb - 1 && fbc > 0) { |
| copy_rect(&src[bot_offset], CDEF_BSTRIDE, |
| &bot_linebuf[fb_info->coffset - CDEF_HBORDER], stride, |
| CDEF_VBORDER, CDEF_HBORDER); |
| } else { |
| fill_rect(&src[bot_offset], CDEF_BSTRIDE, CDEF_VBORDER, CDEF_HBORDER, |
| CDEF_VERY_LARGE); |
| } |
| if (fbr < nvfb - 1 && fbc < nhfb - 1) { |
| copy_rect(&src[bot_offset + hsize + CDEF_HBORDER], CDEF_BSTRIDE, |
| &bot_linebuf[fb_info->coffset + hsize], stride, CDEF_VBORDER, |
| CDEF_HBORDER); |
| } else { |
| fill_rect(&src[bot_offset + hsize + CDEF_HBORDER], CDEF_BSTRIDE, |
| CDEF_VBORDER, CDEF_HBORDER, CDEF_VERY_LARGE); |
| } |
| |
| /* Copy in the pixels we need from the current superblock from top buffer.*/ |
| if (fbr > 0) { |
| copy_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, &top_linebuf[fb_info->coffset], |
| stride, CDEF_VBORDER, hsize); |
| } else { |
| fill_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER, hsize, |
| CDEF_VERY_LARGE); |
| } |
| if (fbr > 0 && fbc > 0) { |
| copy_rect(src, CDEF_BSTRIDE, &top_linebuf[fb_info->coffset - CDEF_HBORDER], |
| stride, CDEF_VBORDER, CDEF_HBORDER); |
| } else { |
| fill_rect(src, CDEF_BSTRIDE, CDEF_VBORDER, CDEF_HBORDER, CDEF_VERY_LARGE); |
| } |
| if (fbr > 0 && fbc < nhfb - 1) { |
| copy_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, |
| &top_linebuf[fb_info->coffset + hsize], stride, CDEF_VBORDER, |
| CDEF_HBORDER); |
| } else { |
| fill_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER, |
| CDEF_HBORDER, CDEF_VERY_LARGE); |
| } |
| if (cdef_left) { |
| /* If we deringed the superblock on the left then we need to copy in |
| saved pixels. */ |
| copy_rect(src, CDEF_BSTRIDE, colbuf[plane], CDEF_HBORDER, |
| rend + CDEF_VBORDER, CDEF_HBORDER); |
| } |
| /* Saving pixels in case we need to dering the superblock on the |
| right. */ |
| copy_rect(colbuf[plane], CDEF_HBORDER, src + hsize, CDEF_BSTRIDE, |
| rend + CDEF_VBORDER, CDEF_HBORDER); |
| |
| if (fb_info->frame_boundary[LEFT]) { |
| fill_rect(src, CDEF_BSTRIDE, vsize + 2 * CDEF_VBORDER, CDEF_HBORDER, |
| CDEF_VERY_LARGE); |
| } |
| if (fb_info->frame_boundary[RIGHT]) { |
| fill_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, |
| vsize + 2 * CDEF_VBORDER, CDEF_HBORDER, CDEF_VERY_LARGE); |
| } |
| } |
| |
| static INLINE void cdef_filter_fb(CdefBlockInfo *const fb_info, int plane, |
| uint8_t use_highbitdepth) { |
| int offset = fb_info->dst_stride * fb_info->roffset + fb_info->coffset; |
| if (use_highbitdepth) { |
| av1_cdef_filter_fb( |
| NULL, CONVERT_TO_SHORTPTR(fb_info->dst + offset), fb_info->dst_stride, |
| &fb_info->src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], |
| fb_info->xdec, fb_info->ydec, fb_info->dir, NULL, fb_info->var, plane, |
| fb_info->dlist, fb_info->cdef_count, fb_info->level, |
| fb_info->sec_strength, fb_info->damping, fb_info->coeff_shift); |
| } else { |
| av1_cdef_filter_fb( |
| fb_info->dst + offset, NULL, fb_info->dst_stride, |
| &fb_info->src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], |
| fb_info->xdec, fb_info->ydec, fb_info->dir, NULL, fb_info->var, plane, |
| fb_info->dlist, fb_info->cdef_count, fb_info->level, |
| fb_info->sec_strength, fb_info->damping, fb_info->coeff_shift); |
| } |
| } |
| |
| // Initializes block-level parameters for CDEF. |
| static INLINE void cdef_init_fb_col(const MACROBLOCKD *const xd, |
| CdefBlockInfo *const fb_info, int *level, |
| int *sec_strength, int fbc, int fbr, |
| int plane) { |
| const PLANE_TYPE plane_type = get_plane_type(plane); |
| fb_info->level = level[plane_type]; |
| fb_info->sec_strength = sec_strength[plane_type]; |
| fb_info->dst = xd->plane[plane].dst.buf; |
| fb_info->dst_stride = xd->plane[plane].dst.stride; |
| |
| fb_info->xdec = xd->plane[plane].subsampling_x; |
| fb_info->ydec = xd->plane[plane].subsampling_y; |
| fb_info->mi_wide_l2 = MI_SIZE_LOG2 - xd->plane[plane].subsampling_x; |
| fb_info->mi_high_l2 = MI_SIZE_LOG2 - xd->plane[plane].subsampling_y; |
| fb_info->roffset = MI_SIZE_64X64 * fbr << fb_info->mi_high_l2; |
| fb_info->coffset = MI_SIZE_64X64 * fbc << fb_info->mi_wide_l2; |
| } |
| |
| static void cdef_fb_col(const AV1_COMMON *const cm, const MACROBLOCKD *const xd, |
| CdefBlockInfo *const fb_info, uint16_t **const colbuf, |
| int *cdef_left, int fbc, int fbr) { |
| const CommonModeInfoParams *const mi_params = &cm->mi_params; |
| const int mbmi_cdef_strength = |
| mi_params |
| ->mi_grid_base[MI_SIZE_64X64 * fbr * mi_params->mi_stride + |
| MI_SIZE_64X64 * fbc] |
| ->cdef_strength; |
| const int num_planes = av1_num_planes(cm); |
| int is_zero_level[PLANE_TYPES] = { 1, 1 }; |
| int level[PLANE_TYPES] = { 0 }; |
| int sec_strength[PLANE_TYPES] = { 0 }; |
| const CdefInfo *const cdef_info = &cm->cdef_info; |
| |
| if (mi_params->mi_grid_base[MI_SIZE_64X64 * fbr * mi_params->mi_stride + |
| MI_SIZE_64X64 * fbc] == NULL || |
| mbmi_cdef_strength == -1) { |
| av1_zero_array(cdef_left, num_planes); |
| return; |
| } |
| |
| // Compute level and secondary strength for planes |
| level[PLANE_TYPE_Y] = |
| cdef_info->cdef_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS; |
| sec_strength[PLANE_TYPE_Y] = |
| cdef_info->cdef_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS; |
| sec_strength[PLANE_TYPE_Y] += sec_strength[PLANE_TYPE_Y] == 3; |
| is_zero_level[PLANE_TYPE_Y] = |
| (level[PLANE_TYPE_Y] == 0) && (sec_strength[PLANE_TYPE_Y] == 0); |
| |
| if (num_planes > 1) { |
| level[PLANE_TYPE_UV] = |
| cdef_info->cdef_uv_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS; |
| sec_strength[PLANE_TYPE_UV] = |
| cdef_info->cdef_uv_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS; |
| sec_strength[PLANE_TYPE_UV] += sec_strength[PLANE_TYPE_UV] == 3; |
| is_zero_level[PLANE_TYPE_UV] = |
| (level[PLANE_TYPE_UV] == 0) && (sec_strength[PLANE_TYPE_UV] == 0); |
| } |
| |
| if (is_zero_level[PLANE_TYPE_Y] && is_zero_level[PLANE_TYPE_UV]) { |
| av1_zero_array(cdef_left, num_planes); |
| return; |
| } |
| |
| fb_info->cdef_count = av1_cdef_compute_sb_list(mi_params, fbr * MI_SIZE_64X64, |
| fbc * MI_SIZE_64X64, |
| fb_info->dlist, BLOCK_64X64); |
| if (!fb_info->cdef_count) { |
| av1_zero_array(cdef_left, num_planes); |
| return; |
| } |
| |
| for (int plane = 0; plane < num_planes; plane++) { |
| // Do not skip cdef filtering for luma plane as filter direction is |
| // computed based on luma. |
| if (plane && is_zero_level[get_plane_type(plane)]) { |
| cdef_left[plane] = 0; |
| continue; |
| } |
| cdef_init_fb_col(xd, fb_info, level, sec_strength, fbc, fbr, plane); |
| cdef_prepare_fb(cm, fb_info, colbuf, cdef_left[plane], fbc, fbr, plane); |
| cdef_filter_fb(fb_info, plane, cm->seq_params->use_highbitdepth); |
| cdef_left[plane] = 1; |
| } |
| } |
| |
| // Initializes row-level parameters for CDEF frame. |
| void av1_cdef_init_fb_row(const AV1_COMMON *const cm, |
| const MACROBLOCKD *const xd, |
| CdefBlockInfo *const fb_info, |
| uint16_t **const linebuf, uint16_t *const src, |
| struct AV1CdefSyncData *const cdef_sync, int fbr) { |
| (void)cdef_sync; |
| const int num_planes = av1_num_planes(cm); |
| const int nvfb = (cm->mi_params.mi_rows + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; |
| const int luma_stride = |
| ALIGN_POWER_OF_TWO(cm->mi_params.mi_cols << MI_SIZE_LOG2, 4); |
| const bool ping_pong = fbr & 1; |
| // for the current filter block, it's top left corner mi structure (mi_tl) |
| // is first accessed to check whether the top and left boundaries are |
| // frame boundaries. Then bottom-left and top-right mi structures are |
| // accessed to check whether the bottom and right boundaries |
| // (respectively) are frame boundaries. |
| // |
| // Note that we can't just check the bottom-right mi structure - eg. if |
| // we're at the right-hand edge of the frame but not the bottom, then |
| // the bottom-right mi is NULL but the bottom-left is not. |
| fb_info->frame_boundary[TOP] = (MI_SIZE_64X64 * fbr == 0) ? 1 : 0; |
| if (fbr != nvfb - 1) |
| fb_info->frame_boundary[BOTTOM] = |
| (MI_SIZE_64X64 * (fbr + 1) == cm->mi_params.mi_rows) ? 1 : 0; |
| else |
| fb_info->frame_boundary[BOTTOM] = 1; |
| |
| fb_info->src = src; |
| fb_info->damping = cm->cdef_info.cdef_damping; |
| fb_info->coeff_shift = AOMMAX(cm->seq_params->bit_depth - 8, 0); |
| av1_zero(fb_info->dir); |
| av1_zero(fb_info->var); |
| |
| for (int plane = 0; plane < num_planes; plane++) { |
| const int mi_high_l2 = MI_SIZE_LOG2 - xd->plane[plane].subsampling_y; |
| const int offset = MI_SIZE_64X64 * (fbr + 1) << mi_high_l2; |
| const int stride = luma_stride >> xd->plane[plane].subsampling_x; |
| // here ping-pong buffers are maintained for top linebuf |
| // to avoid linebuf over-write by consecutive row. |
| uint16_t *const top_linebuf = |
| &linebuf[plane][ping_pong * CDEF_VBORDER * stride]; |
| fb_info->bot_linebuf[plane] = &linebuf[plane][(CDEF_VBORDER << 1) * stride]; |
| |
| if (fbr != nvfb - 1) // top line buffer copy |
| av1_cdef_copy_sb8_16(cm, top_linebuf, stride, xd->plane[plane].dst.buf, |
| offset - CDEF_VBORDER, 0, |
| xd->plane[plane].dst.stride, CDEF_VBORDER, stride); |
| fb_info->top_linebuf[plane] = |
| &linebuf[plane][(!ping_pong) * CDEF_VBORDER * stride]; |
| |
| if (fbr != nvfb - 1) // bottom line buffer copy |
| av1_cdef_copy_sb8_16(cm, fb_info->bot_linebuf[plane], stride, |
| xd->plane[plane].dst.buf, offset, 0, |
| xd->plane[plane].dst.stride, CDEF_VBORDER, stride); |
| } |
| } |
| |
| void av1_cdef_fb_row(const AV1_COMMON *const cm, MACROBLOCKD *xd, |
| uint16_t **const linebuf, uint16_t **const colbuf, |
| uint16_t *const src, int fbr, |
| cdef_init_fb_row_t cdef_init_fb_row_fn, |
| struct AV1CdefSyncData *const cdef_sync) { |
| CdefBlockInfo fb_info; |
| int cdef_left[MAX_MB_PLANE] = { 1, 1, 1 }; |
| const int nhfb = (cm->mi_params.mi_cols + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; |
| |
| cdef_init_fb_row_fn(cm, xd, &fb_info, linebuf, src, cdef_sync, fbr); |
| for (int fbc = 0; fbc < nhfb; fbc++) { |
| fb_info.frame_boundary[LEFT] = (MI_SIZE_64X64 * fbc == 0) ? 1 : 0; |
| if (fbc != nhfb - 1) |
| fb_info.frame_boundary[RIGHT] = |
| (MI_SIZE_64X64 * (fbc + 1) == cm->mi_params.mi_cols) ? 1 : 0; |
| else |
| fb_info.frame_boundary[RIGHT] = 1; |
| cdef_fb_col(cm, xd, &fb_info, colbuf, &cdef_left[0], fbc, fbr); |
| } |
| } |
| |
| // Perform CDEF on input frame. |
| // Inputs: |
| // frame: Pointer to input frame buffer. |
| // cm: Pointer to common structure. |
| // xd: Pointer to common current coding block structure. |
| // Returns: |
| // Nothing will be returned. |
| void av1_cdef_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *const cm, |
| MACROBLOCKD *xd, cdef_init_fb_row_t cdef_init_fb_row_fn) { |
| const int num_planes = av1_num_planes(cm); |
| const int nvfb = (cm->mi_params.mi_rows + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; |
| |
| av1_setup_dst_planes(xd->plane, cm->seq_params->sb_size, frame, 0, 0, 0, |
| num_planes); |
| |
| for (int fbr = 0; fbr < nvfb; fbr++) |
| av1_cdef_fb_row(cm, xd, cm->cdef_info.linebuf, cm->cdef_info.colbuf, |
| cm->cdef_info.srcbuf, fbr, cdef_init_fb_row_fn, NULL); |
| } |
