diff options
Diffstat (limited to 'media/libaom/src/av1/common/cdef.c')
| -rw-r--r-- | media/libaom/src/av1/common/cdef.c | 403 |
1 files changed, 403 insertions, 0 deletions
diff --git a/media/libaom/src/av1/common/cdef.c b/media/libaom/src/av1/common/cdef.c new file mode 100644 index 000000000..e9e2b0e42 --- /dev/null +++ b/media/libaom/src/av1/common/cdef.c @@ -0,0 +1,403 @@ +/* + * 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/cdef.h" +#include "av1/common/cdef_block.h" +#include "av1/common/onyxc_int.h" +#include "av1/common/reconinter.h" + +int sb_all_skip(const AV1_COMMON *const cm, int mi_row, int mi_col) { + int maxc, maxr; + int skip = 1; + maxc = cm->mi_cols - mi_col; + maxr = cm->mi_rows - mi_row; + + maxr = AOMMIN(maxr, MI_SIZE_64X64); + maxc = AOMMIN(maxc, MI_SIZE_64X64); + + for (int r = 0; r < maxr; r++) { + for (int c = 0; c < maxc; c++) { + skip = + skip && + cm->mi_grid_visible[(mi_row + r) * cm->mi_stride + mi_col + c]->skip; + } + } + return skip; +} + +static int is_8x8_block_skip(MB_MODE_INFO **grid, int mi_row, int mi_col, + int mi_stride) { + int is_skip = 1; + for (int r = 0; r < mi_size_high[BLOCK_8X8]; ++r) + for (int c = 0; c < mi_size_wide[BLOCK_8X8]; ++c) + is_skip &= grid[(mi_row + r) * mi_stride + (mi_col + c)]->skip; + + return is_skip; +} + +int sb_compute_cdef_list(const AV1_COMMON *const cm, int mi_row, int mi_col, + cdef_list *dlist, BLOCK_SIZE bs) { + MB_MODE_INFO **grid = cm->mi_grid_visible; + int maxc = cm->mi_cols - mi_col; + int maxr = cm->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 = mi_size_high[BLOCK_8X8]; + const int c_step = mi_size_wide[BLOCK_8X8]; + const int r_shift = (r_step == 2); + const int c_shift = (c_step == 2); + + assert(r_step == 1 || r_step == 2); + assert(c_step == 1 || c_step == 2); + + 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, cm->mi_stride)) { + dlist[count].by = r >> r_shift; + dlist[count].bx = c >> c_shift; + dlist[count].skip = 0; + count++; + } + } + } + return count; +} + +void copy_rect8_8bit_to_16bit_c(uint16_t *dst, int dstride, const uint8_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]; + } + } +} + +void copy_rect8_16bit_to_16bit_c(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]; + } + } +} + +static void copy_sb8_16(AOM_UNUSED AV1_COMMON *cm, uint16_t *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) { + const uint16_t *base = + &CONVERT_TO_SHORTPTR(src)[src_voffset * sstride + src_hoffset]; + copy_rect8_16bit_to_16bit(dst, dstride, base, sstride, vsize, hsize); + } else { + const uint8_t *base = &src[src_voffset * sstride + src_hoffset]; + copy_rect8_8bit_to_16bit(dst, dstride, base, sstride, vsize, hsize); + } +} + +static INLINE void fill_rect(uint16_t *dst, int dstride, int v, int h, + uint16_t x) { + for (int i = 0; i < v; i++) { + for (int j = 0; j < h; j++) { + dst[i * dstride + j] = x; + } + } +} + +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]; + } + } +} + +void av1_cdef_frame(YV12_BUFFER_CONFIG *frame, AV1_COMMON *cm, + MACROBLOCKD *xd) { + const int num_planes = av1_num_planes(cm); + DECLARE_ALIGNED(16, uint16_t, src[CDEF_INBUF_SIZE]); + uint16_t *linebuf[3]; + uint16_t *colbuf[3]; + cdef_list dlist[MI_SIZE_64X64 * MI_SIZE_64X64]; + unsigned char *row_cdef, *prev_row_cdef, *curr_row_cdef; + int cdef_count; + int dir[CDEF_NBLOCKS][CDEF_NBLOCKS] = { { 0 } }; + int var[CDEF_NBLOCKS][CDEF_NBLOCKS] = { { 0 } }; + int mi_wide_l2[3]; + int mi_high_l2[3]; + int xdec[3]; + int ydec[3]; + int coeff_shift = AOMMAX(cm->seq_params.bit_depth - 8, 0); + const int nvfb = (cm->mi_rows + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; + const int nhfb = (cm->mi_cols + MI_SIZE_64X64 - 1) / MI_SIZE_64X64; + av1_setup_dst_planes(xd->plane, cm->seq_params.sb_size, frame, 0, 0, 0, + num_planes); + row_cdef = aom_malloc(sizeof(*row_cdef) * (nhfb + 2) * 2); + memset(row_cdef, 1, sizeof(*row_cdef) * (nhfb + 2) * 2); + prev_row_cdef = row_cdef + 1; + curr_row_cdef = prev_row_cdef + nhfb + 2; + for (int pli = 0; pli < num_planes; pli++) { + xdec[pli] = xd->plane[pli].subsampling_x; + ydec[pli] = xd->plane[pli].subsampling_y; + mi_wide_l2[pli] = MI_SIZE_LOG2 - xd->plane[pli].subsampling_x; + mi_high_l2[pli] = MI_SIZE_LOG2 - xd->plane[pli].subsampling_y; + } + const int stride = (cm->mi_cols << MI_SIZE_LOG2) + 2 * CDEF_HBORDER; + for (int pli = 0; pli < num_planes; pli++) { + linebuf[pli] = aom_malloc(sizeof(*linebuf) * CDEF_VBORDER * stride); + colbuf[pli] = + aom_malloc(sizeof(*colbuf) * + ((CDEF_BLOCKSIZE << mi_high_l2[pli]) + 2 * CDEF_VBORDER) * + CDEF_HBORDER); + } + for (int fbr = 0; fbr < nvfb; fbr++) { + for (int pli = 0; pli < num_planes; pli++) { + const int block_height = + (MI_SIZE_64X64 << mi_high_l2[pli]) + 2 * CDEF_VBORDER; + fill_rect(colbuf[pli], CDEF_HBORDER, block_height, CDEF_HBORDER, + CDEF_VERY_LARGE); + } + int cdef_left = 1; + for (int fbc = 0; fbc < nhfb; fbc++) { + int level, sec_strength; + int uv_level, uv_sec_strength; + int nhb, nvb; + int cstart = 0; + curr_row_cdef[fbc] = 0; + if (cm->mi_grid_visible[MI_SIZE_64X64 * fbr * cm->mi_stride + + MI_SIZE_64X64 * fbc] == NULL || + cm->mi_grid_visible[MI_SIZE_64X64 * fbr * cm->mi_stride + + MI_SIZE_64X64 * fbc] + ->cdef_strength == -1) { + cdef_left = 0; + continue; + } + if (!cdef_left) cstart = -CDEF_HBORDER; + nhb = AOMMIN(MI_SIZE_64X64, cm->mi_cols - MI_SIZE_64X64 * fbc); + nvb = AOMMIN(MI_SIZE_64X64, cm->mi_rows - MI_SIZE_64X64 * fbr); + int frame_top, frame_left, frame_bottom, frame_right; + + int mi_row = MI_SIZE_64X64 * fbr; + int mi_col = MI_SIZE_64X64 * fbc; + // 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. + frame_top = (mi_row == 0) ? 1 : 0; + frame_left = (mi_col == 0) ? 1 : 0; + + if (fbr != nvfb - 1) + frame_bottom = (mi_row + MI_SIZE_64X64 == cm->mi_rows) ? 1 : 0; + else + frame_bottom = 1; + + if (fbc != nhfb - 1) + frame_right = (mi_col + MI_SIZE_64X64 == cm->mi_cols) ? 1 : 0; + else + frame_right = 1; + + const int mbmi_cdef_strength = + cm->mi_grid_visible[MI_SIZE_64X64 * fbr * cm->mi_stride + + MI_SIZE_64X64 * fbc] + ->cdef_strength; + level = cm->cdef_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS; + sec_strength = + cm->cdef_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS; + sec_strength += sec_strength == 3; + uv_level = cm->cdef_uv_strengths[mbmi_cdef_strength] / CDEF_SEC_STRENGTHS; + uv_sec_strength = + cm->cdef_uv_strengths[mbmi_cdef_strength] % CDEF_SEC_STRENGTHS; + uv_sec_strength += uv_sec_strength == 3; + if ((level == 0 && sec_strength == 0 && uv_level == 0 && + uv_sec_strength == 0) || + (cdef_count = sb_compute_cdef_list(cm, fbr * MI_SIZE_64X64, + fbc * MI_SIZE_64X64, dlist, + BLOCK_64X64)) == 0) { + cdef_left = 0; + continue; + } + + curr_row_cdef[fbc] = 1; + for (int pli = 0; pli < num_planes; pli++) { + int coffset; + int rend, cend; + int pri_damping = cm->cdef_pri_damping; + int sec_damping = cm->cdef_sec_damping; + int hsize = nhb << mi_wide_l2[pli]; + int vsize = nvb << mi_high_l2[pli]; + + if (pli) { + level = uv_level; + sec_strength = uv_sec_strength; + } + + if (fbc == nhfb - 1) + cend = hsize; + else + cend = hsize + CDEF_HBORDER; + + if (fbr == nvfb - 1) + rend = vsize; + else + rend = vsize + CDEF_VBORDER; + + coffset = fbc * MI_SIZE_64X64 << mi_wide_l2[pli]; + if (fbc == nhfb - 1) { + /* On the last superblock column, fill in the right border with + CDEF_VERY_LARGE to avoid filtering with the outside. */ + fill_rect(&src[cend + CDEF_HBORDER], CDEF_BSTRIDE, + rend + CDEF_VBORDER, hsize + CDEF_HBORDER - cend, + CDEF_VERY_LARGE); + } + if (fbr == nvfb - 1) { + /* On the last superblock row, fill in the bottom border with + CDEF_VERY_LARGE to avoid filtering with the outside. */ + fill_rect(&src[(rend + CDEF_VBORDER) * CDEF_BSTRIDE], CDEF_BSTRIDE, + CDEF_VBORDER, hsize + 2 * CDEF_HBORDER, CDEF_VERY_LARGE); + } + /* Copy in the pixels we need from the current superblock for + deringing.*/ + copy_sb8_16(cm, + &src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER + cstart], + CDEF_BSTRIDE, xd->plane[pli].dst.buf, + (MI_SIZE_64X64 << mi_high_l2[pli]) * fbr, coffset + cstart, + xd->plane[pli].dst.stride, rend, cend - cstart); + if (!prev_row_cdef[fbc]) { + copy_sb8_16(cm, &src[CDEF_HBORDER], CDEF_BSTRIDE, + xd->plane[pli].dst.buf, + (MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER, + coffset, xd->plane[pli].dst.stride, CDEF_VBORDER, hsize); + } else if (fbr > 0) { + copy_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, &linebuf[pli][coffset], + stride, CDEF_VBORDER, hsize); + } else { + fill_rect(&src[CDEF_HBORDER], CDEF_BSTRIDE, CDEF_VBORDER, hsize, + CDEF_VERY_LARGE); + } + if (!prev_row_cdef[fbc - 1]) { + copy_sb8_16(cm, src, CDEF_BSTRIDE, xd->plane[pli].dst.buf, + (MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER, + coffset - CDEF_HBORDER, xd->plane[pli].dst.stride, + CDEF_VBORDER, CDEF_HBORDER); + } else if (fbr > 0 && fbc > 0) { + copy_rect(src, CDEF_BSTRIDE, &linebuf[pli][coffset - CDEF_HBORDER], + stride, CDEF_VBORDER, CDEF_HBORDER); + } else { + fill_rect(src, CDEF_BSTRIDE, CDEF_VBORDER, CDEF_HBORDER, + CDEF_VERY_LARGE); + } + if (!prev_row_cdef[fbc + 1]) { + copy_sb8_16(cm, &src[CDEF_HBORDER + (nhb << mi_wide_l2[pli])], + CDEF_BSTRIDE, xd->plane[pli].dst.buf, + (MI_SIZE_64X64 << mi_high_l2[pli]) * fbr - CDEF_VBORDER, + coffset + hsize, xd->plane[pli].dst.stride, CDEF_VBORDER, + CDEF_HBORDER); + } else if (fbr > 0 && fbc < nhfb - 1) { + copy_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, + &linebuf[pli][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[pli], CDEF_HBORDER, + rend + CDEF_VBORDER, CDEF_HBORDER); + } + /* Saving pixels in case we need to dering the superblock on the + right. */ + copy_rect(colbuf[pli], CDEF_HBORDER, src + hsize, CDEF_BSTRIDE, + rend + CDEF_VBORDER, CDEF_HBORDER); + copy_sb8_16( + cm, &linebuf[pli][coffset], stride, xd->plane[pli].dst.buf, + (MI_SIZE_64X64 << mi_high_l2[pli]) * (fbr + 1) - CDEF_VBORDER, + coffset, xd->plane[pli].dst.stride, CDEF_VBORDER, hsize); + + if (frame_top) { + fill_rect(src, CDEF_BSTRIDE, CDEF_VBORDER, hsize + 2 * CDEF_HBORDER, + CDEF_VERY_LARGE); + } + if (frame_left) { + fill_rect(src, CDEF_BSTRIDE, vsize + 2 * CDEF_VBORDER, CDEF_HBORDER, + CDEF_VERY_LARGE); + } + if (frame_bottom) { + fill_rect(&src[(vsize + CDEF_VBORDER) * CDEF_BSTRIDE], CDEF_BSTRIDE, + CDEF_VBORDER, hsize + 2 * CDEF_HBORDER, CDEF_VERY_LARGE); + } + if (frame_right) { + fill_rect(&src[hsize + CDEF_HBORDER], CDEF_BSTRIDE, + vsize + 2 * CDEF_VBORDER, CDEF_HBORDER, CDEF_VERY_LARGE); + } + + if (cm->seq_params.use_highbitdepth) { + cdef_filter_fb( + NULL, + &CONVERT_TO_SHORTPTR( + xd->plane[pli] + .dst.buf)[xd->plane[pli].dst.stride * + (MI_SIZE_64X64 * fbr << mi_high_l2[pli]) + + (fbc * MI_SIZE_64X64 << mi_wide_l2[pli])], + xd->plane[pli].dst.stride, + &src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], xdec[pli], + ydec[pli], dir, NULL, var, pli, dlist, cdef_count, level, + sec_strength, pri_damping, sec_damping, coeff_shift); + } else { + cdef_filter_fb( + &xd->plane[pli] + .dst.buf[xd->plane[pli].dst.stride * + (MI_SIZE_64X64 * fbr << mi_high_l2[pli]) + + (fbc * MI_SIZE_64X64 << mi_wide_l2[pli])], + NULL, xd->plane[pli].dst.stride, + &src[CDEF_VBORDER * CDEF_BSTRIDE + CDEF_HBORDER], xdec[pli], + ydec[pli], dir, NULL, var, pli, dlist, cdef_count, level, + sec_strength, pri_damping, sec_damping, coeff_shift); + } + } + cdef_left = 1; + } + { + unsigned char *tmp = prev_row_cdef; + prev_row_cdef = curr_row_cdef; + curr_row_cdef = tmp; + } + } + aom_free(row_cdef); + for (int pli = 0; pli < num_planes; pli++) { + aom_free(linebuf[pli]); + aom_free(colbuf[pli]); + } +} |