diff options
author | Guillaume Martres <smarter@ubuntu.com> | 2013-10-12 13:55:48 +0400 |
---|---|---|
committer | Michael Niedermayer <michaelni@gmx.at> | 2013-10-16 00:13:02 +0400 |
commit | c8dd048ab8cff815c9f4b16a62db0b74df011f0a (patch) | |
tree | e9167d50e3b802a195b6fcfb4c042332f0d2b469 /libavcodec/hevc_filter.c | |
parent | 2a19fcc12311f71f55eab7129b764d4cb800c934 (diff) |
lavc: add a HEVC decoder.
Initially written by Guillaume Martres <smarter@ubuntu.com> as a GSoC
project. Further contributions by the OpenHEVC project and other
developers, namely:
Mickaël Raulet <mraulet@insa-rennes.fr>
Seppo Tomperi <seppo.tomperi@vtt.fi>
Gildas Cocherel <gildas.cocherel@laposte.net>
Khaled Jerbi <khaled_jerbi@yahoo.fr>
Wassim Hamidouche <wassim.hamidouche@insa-rennes.fr>
Vittorio Giovara <vittorio.giovara@gmail.com>
Jan Ekström <jeebjp@gmail.com>
Anton Khirnov <anton@khirnov.net>
Martin Storsjö <martin@martin.st>
Luca Barbato <lu_zero@gentoo.org>
Yusuke Nakamura <muken.the.vfrmaniac@gmail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Diffstat (limited to 'libavcodec/hevc_filter.c')
-rw-r--r-- | libavcodec/hevc_filter.c | 698 |
1 files changed, 698 insertions, 0 deletions
diff --git a/libavcodec/hevc_filter.c b/libavcodec/hevc_filter.c new file mode 100644 index 0000000000..85189a87f6 --- /dev/null +++ b/libavcodec/hevc_filter.c @@ -0,0 +1,698 @@ +/* + * HEVC video Decoder + * + * Copyright (C) 2012 - 2013 Guillaume Martres + * Copyright (C) 2013 Seppo Tomperi + * Copyright (C) 2013 Wassim Hamidouche + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include "libavutil/common.h" +#include "libavutil/internal.h" + +#include "cabac_functions.h" +#include "golomb.h" +#include "hevc.h" +#include "bit_depth_template.c" + +#define LUMA 0 +#define CB 1 +#define CR 2 + +static const uint8_t tctable[54] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, // QP 0...18 + 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, // QP 19...37 + 5, 5, 6, 6, 7, 8, 9,10,11,13,14,16,18,20,22,24 // QP 38...53 +}; + +static const uint8_t betatable[52] = { + 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 6, 7, 8, // QP 0...18 + 9,10,11,12,13,14,15,16,17,18,20,22,24,26,28,30,32,34,36, // QP 19...37 + 38,40,42,44,46,48,50,52,54,56,58,60,62,64 // QP 38...51 +}; + +static int chroma_tc(HEVCContext *s, int qp_y, int c_idx, int tc_offset) +{ + static const int qp_c[] = { 29, 30, 31, 32, 33, 33, 34, 34, 35, 35, 36, 36, 37, 37 }; + int qp_i, offset; + int qp; + int idxt; + + // slice qp offset is not used for deblocking + if (c_idx == 1) + offset = s->pps->cb_qp_offset; + else + offset = s->pps->cr_qp_offset; + + qp_i = av_clip_c(qp_y + offset, 0, 57); + if (qp_i < 30) + qp = qp_i; + else if (qp_i > 43) + qp = qp_i - 6; + else + qp = qp_c[qp_i - 30]; + + idxt = av_clip_c(qp + DEFAULT_INTRA_TC_OFFSET + tc_offset, 0, 53); + return tctable[idxt]; +} + +static int get_qPy_pred(HEVCContext *s, int xC, int yC, int xBase, int yBase, int log2_cb_size) +{ + HEVCLocalContext *lc = &s->HEVClc; + int ctb_size_mask = (1 << s->sps->log2_ctb_size) - 1; + int MinCuQpDeltaSizeMask = (1 << (s->sps->log2_ctb_size - s->pps->diff_cu_qp_delta_depth)) - 1; + int xQgBase = xBase - ( xBase & MinCuQpDeltaSizeMask ); + int yQgBase = yBase - ( yBase & MinCuQpDeltaSizeMask ); + int pic_width = s->sps->width >> s->sps->log2_min_coding_block_size; + int pic_height = s->sps->height >> s->sps->log2_min_coding_block_size; + int x_cb = xQgBase >> s->sps->log2_min_coding_block_size; + int y_cb = yQgBase >> s->sps->log2_min_coding_block_size; + int availableA = (xBase & ctb_size_mask) && (xQgBase & ctb_size_mask); + int availableB = (yBase & ctb_size_mask) && (yQgBase & ctb_size_mask); + int qPy_pred; + int qPy_a; + int qPy_b; + + // qPy_pred + if (lc->first_qp_group) { + lc->first_qp_group = !lc->tu.is_cu_qp_delta_coded; + qPy_pred = s->sh.slice_qp; + } else { + qPy_pred = lc->qp_y; + if (log2_cb_size < s->sps->log2_ctb_size - s->pps->diff_cu_qp_delta_depth) { + static const int offsetX[8][8] = { + {-1, 1, 3, 1, 7, 1, 3, 1}, + { 0, 0, 0, 0, 0, 0, 0, 0}, + { 1, 3, 1, 3, 1, 3, 1, 3}, + { 2, 2, 2, 2, 2, 2, 2, 2}, + { 3, 5, 7, 5, 3, 5, 7, 5}, + { 4, 4, 4, 4, 4, 4, 4, 4}, + { 5, 7, 5, 7, 5, 7, 5, 7}, + { 6, 6, 6, 6, 6, 6, 6, 6} + }; + static const int offsetY[8][8] = { + { 7, 0, 1, 2, 3, 4, 5, 6}, + { 0, 1, 2, 3, 4, 5, 6, 7}, + { 1, 0, 3, 2, 5, 4, 7, 6}, + { 0, 1, 2, 3, 4, 5, 6, 7}, + { 3, 0, 1, 2, 7, 4, 5, 6}, + { 0, 1, 2, 3, 4, 5, 6, 7}, + { 1, 0, 3, 2, 5, 4, 7, 6}, + { 0, 1, 2, 3, 4, 5, 6, 7} + }; + int xC0b = (xC - (xC & ctb_size_mask)) >> s->sps->log2_min_coding_block_size; + int yC0b = (yC - (yC & ctb_size_mask)) >> s->sps->log2_min_coding_block_size; + int idxX = (xQgBase & ctb_size_mask) >> s->sps->log2_min_coding_block_size; + int idxY = (yQgBase & ctb_size_mask) >> s->sps->log2_min_coding_block_size; + int idx_mask = ctb_size_mask >> s->sps->log2_min_coding_block_size; + int x, y; + + x = FFMIN(xC0b + offsetX[idxX][idxY], pic_width - 1); + y = FFMIN(yC0b + (offsetY[idxX][idxY] & idx_mask), pic_height - 1); + + if (xC0b == (lc->start_of_tiles_x >> s->sps->log2_min_coding_block_size) && + offsetX[idxX][idxY] == -1) { + x = (lc->end_of_tiles_x >> s->sps->log2_min_coding_block_size) - 1; + y = yC0b - 1; + } + qPy_pred = s->qp_y_tab[y * pic_width + x]; + } + } + + // qPy_a + if (availableA == 0) + qPy_a = qPy_pred; + else + qPy_a = s->qp_y_tab[(x_cb - 1) + y_cb * pic_width]; + + // qPy_b + if (availableB == 0) + qPy_b = qPy_pred; + else + qPy_b = s->qp_y_tab[x_cb + (y_cb - 1) * pic_width]; + + return (qPy_a + qPy_b + 1) >> 1; +} + +void ff_hevc_set_qPy(HEVCContext *s, int xC, int yC, int xBase, int yBase, int log2_cb_size) +{ + int qp_y = get_qPy_pred(s, xC, yC, xBase, yBase, log2_cb_size); + + if (s->HEVClc.tu.cu_qp_delta != 0) { + int off = s->sps->qp_bd_offset; + s->HEVClc.qp_y = ((qp_y + s->HEVClc.tu.cu_qp_delta + 52 + 2 * off) % (52 + off)) - off; + } else + s->HEVClc.qp_y = qp_y; +} + +static int get_qPy(HEVCContext *s, int xC, int yC) +{ + int log2_min_cb_size = s->sps->log2_min_coding_block_size; + int pic_width = s->sps->width>>log2_min_cb_size; + int x = xC >> log2_min_cb_size; + int y = yC >> log2_min_cb_size; + return s->qp_y_tab[x + y * pic_width]; +} + +static void copy_CTB(uint8_t *dst, uint8_t *src, int width, int height, int stride) +{ + int i; + + for(i=0; i< height; i++){ + memcpy(dst, src, width); + dst += stride; + src += stride; + } +} + +#define CTB(tab, x, y) ((tab)[(y) * s->sps->ctb_width + (x)]) + +static void sao_filter_CTB(HEVCContext *s, int x, int y, int c_idx_min, int c_idx_max) +{ + // TODO: This should be easily parallelizable + // TODO: skip CBs when (cu_transquant_bypass_flag || (pcm_loop_filter_disable_flag && pcm_flag)) + int c_idx = 0; + int class = 1, class_index; + int edges[4]; // 0 left 1 top 2 right 3 bottom + SAOParams *sao[4]; + int classes[4]; + int x_shift = 0, y_shift = 0; + int x_ctb = x>>s->sps->log2_ctb_size; + int y_ctb = y>>s->sps->log2_ctb_size; + int ctb_addr_rs = y_ctb * s->sps->ctb_width + x_ctb; + int ctb_addr_ts = s->pps->ctb_addr_rs_to_ts[ctb_addr_rs]; + + // flags indicating unfilterable edges + uint8_t vert_edge[] = {0,0,0,0}; + uint8_t horiz_edge[] = {0,0,0,0}; + uint8_t diag_edge[] = {0,0,0,0}; + uint8_t lfase[3]; // current, above, left + uint8_t no_tile_filter = s->pps->tiles_enabled_flag && !s->pps->loop_filter_across_tiles_enabled_flag; + uint8_t left_tile_edge = 0; + uint8_t up_tile_edge = 0; + + sao[0] = &CTB(s->sao, x_ctb, y_ctb); + edges[0] = x_ctb == 0; + edges[1] = y_ctb == 0; + edges[2] = x_ctb == (s->sps->ctb_width - 1); + edges[3] = y_ctb == (s->sps->ctb_height - 1); + lfase[0] = CTB(s->filter_slice_edges, x_ctb, y_ctb); + classes[0] = 0; + + if (!edges[0]) { + left_tile_edge = no_tile_filter && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs-1]]; + sao[class] = &CTB(s->sao, x_ctb - 1, y_ctb); + vert_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb)) || left_tile_edge; + vert_edge[2] = vert_edge[0]; + lfase[2] = CTB(s->filter_slice_edges, x_ctb - 1, y_ctb); + classes[class] = 2; + class++; + x_shift = 8; + } + + if (!edges[1]) { + up_tile_edge = no_tile_filter && s->pps->tile_id[ctb_addr_ts] != s->pps->tile_id[s->pps->ctb_addr_rs_to_ts[ctb_addr_rs - s->sps->ctb_width]]; + sao[class] = &CTB(s->sao, x_ctb, y_ctb - 1); + horiz_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) || up_tile_edge; + horiz_edge[1] = horiz_edge[0]; + lfase[1] = CTB(s->filter_slice_edges, x_ctb, y_ctb - 1); + classes[class] = 1; + class++; + y_shift = 4; + + if (!edges[0]) { + classes[class] = 3; + sao[class] = &CTB(s->sao, x_ctb - 1, y_ctb - 1); + class++; + + // Tile check here is done current CTB row/col, not above/left like you'd expect, + //but that is because the tile boundary always extends through the whole pic + vert_edge[1] = (!lfase[1] && CTB(s->tab_slice_address, x_ctb, y_ctb - 1) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || left_tile_edge; + vert_edge[3] = vert_edge[1]; + horiz_edge[2] = (!lfase[2] && CTB(s->tab_slice_address, x_ctb - 1, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || up_tile_edge; + horiz_edge[3] = horiz_edge[2]; + diag_edge[0] = (!lfase[0] && CTB(s->tab_slice_address, x_ctb, y_ctb) != CTB(s->tab_slice_address, x_ctb - 1, y_ctb - 1)) || left_tile_edge || up_tile_edge; + diag_edge[3] = diag_edge[0]; + + // Does left CTB comes after above CTB? + if(CTB(s->tab_slice_address, x_ctb - 1, y_ctb) > CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) { + diag_edge[2] = !lfase[2] || left_tile_edge || up_tile_edge; + diag_edge[1] = diag_edge[2]; + } else if(CTB(s->tab_slice_address, x_ctb - 1, y_ctb) < CTB(s->tab_slice_address, x_ctb, y_ctb - 1)) { + diag_edge[1] = !lfase[1] || left_tile_edge || up_tile_edge; + diag_edge[2] = diag_edge[1]; + } else { + // Same slice, only consider tiles + diag_edge[2] = left_tile_edge || up_tile_edge; + diag_edge[1] = diag_edge[2]; + } + } + } + + for (c_idx = 0; c_idx < 3; c_idx++) { + int chroma = c_idx ? 1 : 0; + int x0 = x >> chroma; + int y0 = y >> chroma; + int stride = s->frame->linesize[c_idx]; + int ctb_size = (1 << (s->sps->log2_ctb_size)) >> s->sps->hshift[c_idx]; + int width = FFMIN(ctb_size, + (s->sps->width >> s->sps->hshift[c_idx]) - x0); + int height = FFMIN(ctb_size, + (s->sps->height >> s->sps->vshift[c_idx]) - y0); + + uint8_t *src = &s->frame->data[c_idx][y0 * stride + (x0 << s->sps->pixel_shift)]; + uint8_t *dst = &s->sao_frame->data[c_idx][y0 * stride + (x0 << s->sps->pixel_shift)]; + int offset = (y_shift >> chroma) * stride + ((x_shift >> chroma) << s->sps->pixel_shift); + + copy_CTB(dst - offset, src - offset, + (edges[2] ? width + (x_shift >> chroma) : width) << s->sps->pixel_shift, + (edges[3] ? height + (y_shift >> chroma) : height), stride); + + for (class_index = 0; class_index < class && c_idx >= c_idx_min && + c_idx < c_idx_max; class_index++) { + switch (sao[class_index]->type_idx[c_idx]) { + case SAO_BAND: + s->hevcdsp.sao_band_filter[classes[class_index]](dst, src, stride, sao[class_index], edges, width, height, c_idx); + break; + case SAO_EDGE: + s->hevcdsp.sao_edge_filter[classes[class_index]](dst, src, stride, sao[class_index], edges, width, height, c_idx, vert_edge[classes[class_index]], horiz_edge[classes[class_index]], diag_edge[classes[class_index]]); + break; + } + } + } +} + +static int get_pcm(HEVCContext *s, int x, int y) +{ + int log2_min_pu_size = s->sps->log2_min_pu_size; + int pic_width_in_min_pu = s->sps->width >> s->sps->log2_min_pu_size; + int pic_height_in_min_pu = s->sps->height >> s->sps->log2_min_pu_size; + int x_pu = x >> log2_min_pu_size; + int y_pu = y >> log2_min_pu_size; + + if (x < 0 || x_pu >= pic_width_in_min_pu || y < 0 || y_pu >= pic_height_in_min_pu) + return 2; + return s->is_pcm[y_pu * pic_width_in_min_pu + x_pu]; +} + +#define TC_CALC(qp, bs) tctable[av_clip((qp) + DEFAULT_INTRA_TC_OFFSET * ((bs) - 1) + ((tc_offset >> 1) << 1), 0, MAX_QP + DEFAULT_INTRA_TC_OFFSET)] + +static void deblocking_filter_CTB(HEVCContext *s, int x0, int y0) +{ + uint8_t *src; + int x, y; + int chroma; + int c_tc[2]; + int beta[2]; + int tc[2]; + uint8_t no_p[2] = {0}; + uint8_t no_q[2] = {0}; + + int log2_ctb_size = s->sps->log2_ctb_size; + int x_end, y_end; + int ctb_size = 1<<log2_ctb_size; + int ctb = (x0 >> log2_ctb_size) + (y0 >> log2_ctb_size) * s->sps->ctb_width; + int cur_tc_offset = s->deblock[ctb].tc_offset; + int cur_beta_offset = s->deblock[ctb].beta_offset; + int left_tc_offset, left_beta_offset; + int tc_offset, beta_offset; + int pcmf = (s->sps->pcm_enabled_flag && s->sps->pcm.loop_filter_disable_flag) || + s->pps->transquant_bypass_enable_flag; + + if (s->deblock[ctb].disable) + return; + + if (x0) { + left_tc_offset = s->deblock[ctb-1].tc_offset; + left_beta_offset = s->deblock[ctb-1].beta_offset; + } + + x_end = x0+ctb_size; + if (x_end > s->sps->width) + x_end = s->sps->width; + y_end = y0+ctb_size; + if (y_end > s->sps->height) + y_end = s->sps->height; + + tc_offset = cur_tc_offset; + beta_offset = cur_beta_offset; + + // vertical filtering luma + for (y = y0; y < y_end; y += 8) { + for (x = x0 ? x0 : 8; x < x_end; x += 8) { + const int bs0 = s->vertical_bs[(x >> 3) + (y >> 2) * s->bs_width]; + const int bs1 = s->vertical_bs[(x >> 3) + ((y + 4) >> 2) * s->bs_width]; + if (bs0 || bs1) { + const int qp0 = (get_qPy(s, x - 1, y) + get_qPy(s, x, y) + 1) >> 1; + const int qp1 = (get_qPy(s, x - 1, y + 4) + get_qPy(s, x, y + 4) + 1) >> 1; + + beta[0] = betatable[av_clip(qp0 + ((beta_offset >> 1) << 1), 0, MAX_QP)]; + beta[1] = betatable[av_clip(qp1 + ((beta_offset >> 1) << 1), 0, MAX_QP)]; + tc[0] = bs0 ? TC_CALC(qp0, bs0) : 0; + tc[1] = bs1 ? TC_CALC(qp1, bs1) : 0; + src = &s->frame->data[LUMA][y * s->frame->linesize[LUMA] + (x << s->sps->pixel_shift)]; + if (pcmf) { + no_p[0] = get_pcm(s, x - 1, y); + no_p[1] = get_pcm(s, x - 1, y + 4); + no_q[0] = get_pcm(s, x, y); + no_q[1] = get_pcm(s, x, y + 4); + s->hevcdsp.hevc_v_loop_filter_luma_c(src, s->frame->linesize[LUMA], beta, tc, no_p, no_q); + } else + s->hevcdsp.hevc_v_loop_filter_luma(src, s->frame->linesize[LUMA], beta, tc, no_p, no_q); + } + } + } + + // vertical filtering chroma + for (chroma = 1; chroma <= 2; chroma++) { + for (y = y0; y < y_end; y += 16) { + for (x = x0 ? x0:16; x < x_end; x += 16) { + const int bs0 = s->vertical_bs[(x >> 3) + (y >> 2) * s->bs_width]; + const int bs1 = s->vertical_bs[(x >> 3) + ((y + 8) >> 2) * s->bs_width]; + if ((bs0 == 2) || (bs1 == 2)) { + const int qp0 = (get_qPy(s, x - 1, y) + get_qPy(s, x, y) + 1) >> 1; + const int qp1 = (get_qPy(s, x - 1, y + 8) + get_qPy(s, x, y + 8) + 1) >> 1; + + c_tc[0] = (bs0 == 2) ? chroma_tc(s, qp0, chroma, tc_offset) : 0; + c_tc[1] = (bs1 == 2) ? chroma_tc(s, qp1, chroma, tc_offset) : 0; + src = &s->frame->data[chroma][(y / 2) * s->frame->linesize[chroma] + ((x / 2) << s->sps->pixel_shift)]; + if (pcmf) { + no_p[0] = get_pcm(s, x - 1, y); + no_p[1] = get_pcm(s, x - 1, y + 8); + no_q[0] = get_pcm(s, x, y); + no_q[1] = get_pcm(s, x, y + 8); + s->hevcdsp.hevc_v_loop_filter_chroma_c(src, s->frame->linesize[chroma], c_tc, no_p, no_q); + } else + s->hevcdsp.hevc_v_loop_filter_chroma(src, s->frame->linesize[chroma], c_tc, no_p, no_q); + } + } + } + } + + // horizontal filtering luma + if (x_end != s->sps->width) + x_end -= 8; + for (y = y0 ? y0 : 8; y < y_end; y += 8) { + for (x = x0 ? x0 - 8 : 0; x < x_end; x += 8) { + const int bs0 = s->horizontal_bs[(x + y * s->bs_width) >> 2]; + const int bs1 = s->horizontal_bs[(x + 4 + y * s->bs_width) >> 2]; + if (bs0 || bs1) { + const int qp0 = (get_qPy(s, x, y - 1) + get_qPy(s, x, y) + 1) >> 1; + const int qp1 = (get_qPy(s, x + 4, y - 1) + get_qPy(s, x + 4, y) + 1) >> 1; + + tc_offset = x >= x0 ? cur_tc_offset : left_tc_offset; + beta_offset = x >= x0 ? cur_beta_offset : left_beta_offset; + + beta[0] = betatable[av_clip(qp0 + ((beta_offset >> 1) << 1), 0, MAX_QP)]; + beta[1] = betatable[av_clip(qp1 + ((beta_offset >> 1) << 1), 0, MAX_QP)]; + tc[0] = bs0 ? TC_CALC(qp0, bs0) : 0; + tc[1] = bs1 ? TC_CALC(qp1, bs1) : 0; + src = &s->frame->data[LUMA][y * s->frame->linesize[LUMA] + (x << s->sps->pixel_shift)]; + if (pcmf) { + no_p[0] = get_pcm(s, x, y - 1); + no_p[1] = get_pcm(s, x + 4, y - 1); + no_q[0] = get_pcm(s, x, y); + no_q[1] = get_pcm(s, x + 4, y); + s->hevcdsp.hevc_h_loop_filter_luma_c(src, s->frame->linesize[LUMA], beta, tc, no_p, no_q); + } else + s->hevcdsp.hevc_h_loop_filter_luma(src, s->frame->linesize[LUMA], beta, tc, no_p, no_q); + } + } + } + + // horizontal filtering chroma + for (chroma = 1; chroma <= 2; chroma++) { + for (y = y0 ? y0 : 16; y < y_end; y += 16) { + for (x = x0 - 8; x < x_end; x += 16) { + int bs0, bs1; + // to make sure no memory access over boundary when x = -8 + // TODO: simplify with row based deblocking + if (x < 0) { + bs0 = 0; + bs1 = s->horizontal_bs[(x + 8 + y * s->bs_width) >> 2]; + } else if (x >= x_end - 8) { + bs0 = s->horizontal_bs[(x + y * s->bs_width) >> 2]; + bs1 = 0; + } else { + bs0 = s->horizontal_bs[(x + y * s->bs_width) >> 2]; + bs1 = s->horizontal_bs[(x + 8 + y * s->bs_width) >> 2]; + } + + if ((bs0 == 2) || (bs1 == 2)) { + const int qp0 = (bs0 == 2) ? ((get_qPy(s, x, y - 1) + get_qPy(s, x, y) + 1) >> 1) : 0; + const int qp1 = (bs1 == 2) ? ((get_qPy(s, x + 8, y - 1) + get_qPy(s, x + 8, y) + 1) >> 1) : 0; + + tc_offset = x >= x0 ? cur_tc_offset : left_tc_offset; + c_tc[0] = (bs0 == 2) ? chroma_tc(s, qp0, chroma, tc_offset) : 0; + c_tc[1] = (bs1 == 2) ? chroma_tc(s, qp1, chroma, cur_tc_offset) : 0; + src = &s->frame->data[chroma][(y / 2) * s->frame->linesize[chroma] + ((x / 2) << s->sps->pixel_shift)]; + if (pcmf) { + no_p[0] = get_pcm(s, x, y - 1); + no_p[1] = get_pcm(s, x + 8, y - 1); + no_q[0] = get_pcm(s, x, y); + no_q[1] = get_pcm(s, x + 8, y); + s->hevcdsp.hevc_h_loop_filter_chroma_c(src, s->frame->linesize[chroma], c_tc, no_p, no_q); + } else + s->hevcdsp.hevc_h_loop_filter_chroma(src, s->frame->linesize[chroma], c_tc, no_p, no_q); + } + } + } + } +} + +static int boundary_strength(HEVCContext *s, MvField *curr, + uint8_t curr_cbf_luma, MvField *neigh, + uint8_t neigh_cbf_luma, RefPicList *neigh_refPicList, + int tu_border) +{ + int mvs = curr->pred_flag[0] + curr->pred_flag[1]; + + if (tu_border) { + if (curr->is_intra || neigh->is_intra) + return 2; + if (curr_cbf_luma || neigh_cbf_luma) + return 1; + } + + if (mvs == neigh->pred_flag[0] + neigh->pred_flag[1]) { + if (mvs == 2) { + // same L0 and L1 + if (s->ref->refPicList[0].list[curr->ref_idx[0]] == neigh_refPicList[0].list[neigh->ref_idx[0]] && + s->ref->refPicList[0].list[curr->ref_idx[0]] == s->ref->refPicList[1].list[curr->ref_idx[1]] && + neigh_refPicList[0].list[neigh->ref_idx[0]] == neigh_refPicList[1].list[neigh->ref_idx[1]]) { + if ((abs(neigh->mv[0].x - curr->mv[0].x) >= 4 || abs(neigh->mv[0].y - curr->mv[0].y) >= 4 || + abs(neigh->mv[1].x - curr->mv[1].x) >= 4 || abs(neigh->mv[1].y - curr->mv[1].y) >= 4) && + (abs(neigh->mv[1].x - curr->mv[0].x) >= 4 || abs(neigh->mv[1].y - curr->mv[0].y) >= 4 || + abs(neigh->mv[0].x - curr->mv[1].x) >= 4 || abs(neigh->mv[0].y - curr->mv[1].y) >= 4)) + return 1; + else + return 0; + } else if (neigh_refPicList[0].list[neigh->ref_idx[0]] == s->ref->refPicList[0].list[curr->ref_idx[0]] && + neigh_refPicList[1].list[neigh->ref_idx[1]] == s->ref->refPicList[1].list[curr->ref_idx[1]]) { + if (abs(neigh->mv[0].x - curr->mv[0].x) >= 4 || abs(neigh->mv[0].y - curr->mv[0].y) >= 4 || + abs(neigh->mv[1].x - curr->mv[1].x) >= 4 || abs(neigh->mv[1].y - curr->mv[1].y) >= 4) + return 1; + else + return 0; + } else if (neigh_refPicList[1].list[neigh->ref_idx[1]] == s->ref->refPicList[0].list[curr->ref_idx[0]] && + neigh_refPicList[0].list[neigh->ref_idx[0]] == s->ref->refPicList[1].list[curr->ref_idx[1]]) { + if (abs(neigh->mv[1].x - curr->mv[0].x) >= 4 || abs(neigh->mv[1].y - curr->mv[0].y) >= 4 || + abs(neigh->mv[0].x - curr->mv[1].x) >= 4 || abs(neigh->mv[0].y - curr->mv[1].y) >= 4) + return 1; + else + return 0; + } else { + return 1; + } + } else { // 1 MV + Mv A, B; + int ref_A; + int ref_B; + + if (curr->pred_flag[0]) { + A = curr->mv[0]; + ref_A = s->ref->refPicList[0].list[curr->ref_idx[0]]; + } else { + A = curr->mv[1]; + ref_A = s->ref->refPicList[1].list[curr->ref_idx[1]]; + } + + if (neigh->pred_flag[0]) { + B = neigh->mv[0]; + ref_B = neigh_refPicList[0].list[neigh->ref_idx[0]]; + } else { + B = neigh->mv[1]; + ref_B = neigh_refPicList[1].list[neigh->ref_idx[1]]; + } + + if (ref_A == ref_B) { + if (abs(A.x - B.x) >= 4 || abs(A.y - B.y) >= 4) + return 1; + else + return 0; + } else + return 1; + } + } + + return 1; +} + +void ff_hevc_deblocking_boundary_strengths(HEVCContext *s, int x0, int y0, int log2_trafo_size, + int slice_or_tiles_up_boundary, int slice_or_tiles_left_boundary) +{ + MvField *tab_mvf = s->ref->tab_mvf; + int log2_min_pu_size = s->sps->log2_min_pu_size; + int log2_min_tu_size = s->sps->log2_min_transform_block_size; + int pic_width_in_min_pu = s->sps->width >> log2_min_pu_size; + int pic_width_in_min_tu = s->sps->width >> log2_min_tu_size; + int is_intra = tab_mvf[(y0 >> log2_min_pu_size) * pic_width_in_min_pu + (x0 >> log2_min_pu_size)].is_intra; + + int i, j; + int bs; + + if (y0 > 0 && (y0 & 7) == 0) { + int yp_pu = (y0 - 1) >> log2_min_pu_size; + int yq_pu = y0 >> log2_min_pu_size; + int yp_tu = (y0 - 1) >> log2_min_tu_size; + int yq_tu = y0 >> log2_min_tu_size; + + for (i = 0; i < (1 << log2_trafo_size); i += 4) { + int x_pu = (x0 + i) >> log2_min_pu_size; + int x_tu = (x0 + i) >> log2_min_tu_size; + MvField *top = &tab_mvf[yp_pu * pic_width_in_min_pu + x_pu]; + MvField *curr = &tab_mvf[yq_pu * pic_width_in_min_pu + x_pu]; + uint8_t top_cbf_luma = s->cbf_luma[yp_tu * pic_width_in_min_tu + x_tu]; + uint8_t curr_cbf_luma = s->cbf_luma[yq_tu * pic_width_in_min_tu + x_tu]; + RefPicList* top_refPicList = ff_hevc_get_ref_list(s, s->ref, x0 + i, y0 - 1); + + bs = boundary_strength(s, curr, curr_cbf_luma, top, top_cbf_luma, top_refPicList, 1); + if (!s->sh.slice_loop_filter_across_slices_enabled_flag && (slice_or_tiles_up_boundary & 1) && (y0 % (1 << s->sps->log2_ctb_size)) == 0) + bs = 0; + else if (!s->pps->loop_filter_across_tiles_enabled_flag && (slice_or_tiles_up_boundary & 2) && (y0 % (1 << s->sps->log2_ctb_size)) == 0) + bs = 0; + if (y0 == 0 || s->sh.disable_deblocking_filter_flag == 1) + bs = 0; + if (bs) + s->horizontal_bs[((x0 + i) + y0 * s->bs_width) >> 2] = bs; + } + } + + // bs for TU internal horizontal PU boundaries + if (log2_trafo_size > s->sps->log2_min_pu_size && !is_intra) + for (j = 8; j < (1 << log2_trafo_size); j += 8) { + int yp_pu = (y0 + j - 1) >> log2_min_pu_size; + int yq_pu = (y0 + j) >> log2_min_pu_size; + int yp_tu = (y0 + j - 1) >> log2_min_tu_size; + int yq_tu = (y0 + j) >> log2_min_tu_size; + + + for (i = 0; i < (1<<log2_trafo_size); i += 4) { + int x_pu = (x0 + i) >> log2_min_pu_size; + int x_tu = (x0 + i) >> log2_min_tu_size; + MvField *top = &tab_mvf[yp_pu * pic_width_in_min_pu + x_pu]; + MvField *curr = &tab_mvf[yq_pu * pic_width_in_min_pu + x_pu]; + uint8_t top_cbf_luma = s->cbf_luma[yp_tu * pic_width_in_min_tu + x_tu]; + uint8_t curr_cbf_luma = s->cbf_luma[yq_tu * pic_width_in_min_tu + x_tu]; + RefPicList* top_refPicList = ff_hevc_get_ref_list(s, s->ref, x0 + i, y0 + j - 1); + + bs = boundary_strength(s, curr, curr_cbf_luma, top, top_cbf_luma, top_refPicList, 0); + if (s->sh.disable_deblocking_filter_flag == 1) + bs = 0; + if (bs) + s->horizontal_bs[((x0 + i) + (y0 + j) * s->bs_width) >> 2] = bs; + } + } + + // bs for vertical TU boundaries + if (x0 > 0 && (x0 & 7) == 0) { + int xp_pu = (x0 - 1) >> log2_min_pu_size; + int xq_pu = x0 >> log2_min_pu_size; + int xp_tu = (x0 - 1) >> log2_min_tu_size; + int xq_tu = x0 >> log2_min_tu_size; + + for (i = 0; i < (1 << log2_trafo_size); i += 4) { + int y_pu = (y0 + i) >> log2_min_pu_size; + int y_tu = (y0 + i) >> log2_min_tu_size; + MvField *left = &tab_mvf[y_pu * pic_width_in_min_pu + xp_pu]; + MvField *curr = &tab_mvf[y_pu * pic_width_in_min_pu + xq_pu]; + + uint8_t left_cbf_luma = s->cbf_luma[y_tu * pic_width_in_min_tu + xp_tu]; + uint8_t curr_cbf_luma = s->cbf_luma[y_tu * pic_width_in_min_tu + xq_tu]; + RefPicList* left_refPicList = ff_hevc_get_ref_list(s, s->ref, x0 - 1, y0 + i); + + bs = boundary_strength(s, curr, curr_cbf_luma, left, left_cbf_luma, left_refPicList, 1); + if (!s->sh.slice_loop_filter_across_slices_enabled_flag && (slice_or_tiles_left_boundary & 1) && (x0 % (1 << s->sps->log2_ctb_size)) == 0) + bs = 0; + else if (!s->pps->loop_filter_across_tiles_enabled_flag && (slice_or_tiles_left_boundary & 2) && (x0 % (1 << s->sps->log2_ctb_size)) == 0) + bs = 0; + if (x0 == 0 || s->sh.disable_deblocking_filter_flag == 1) + bs = 0; + if (bs) + s->vertical_bs[(x0 >> 3) + ((y0 + i) >> 2) * s->bs_width] = bs; + } + } + + // bs for TU internal vertical PU boundaries + if (log2_trafo_size > s->sps->log2_min_pu_size && !is_intra) + for (j = 0; j < (1 << log2_trafo_size); j += 4) { + int y_pu = (y0 + j) >> log2_min_pu_size; + int y_tu = (y0 + j) >> log2_min_tu_size; + + for (i = 8; i < (1 << log2_trafo_size); i += 8) { + int xp_pu = (x0 + i - 1) >> log2_min_pu_size; + int xq_pu = (x0 + i) >> log2_min_pu_size; + int xp_tu = (x0 + i - 1) >> log2_min_tu_size; + int xq_tu = (x0 + i) >> log2_min_tu_size; + MvField *left = &tab_mvf[y_pu * pic_width_in_min_pu + xp_pu]; + MvField *curr = &tab_mvf[y_pu * pic_width_in_min_pu + xq_pu]; + uint8_t left_cbf_luma = s->cbf_luma[y_tu * pic_width_in_min_tu + xp_tu]; + uint8_t curr_cbf_luma = s->cbf_luma[y_tu * pic_width_in_min_tu + xq_tu]; + RefPicList* left_refPicList = ff_hevc_get_ref_list(s, s->ref, x0 + i - 1, y0 + j); + + + bs = boundary_strength(s, curr, curr_cbf_luma, left, left_cbf_luma, left_refPicList, 0); + if (s->sh.disable_deblocking_filter_flag == 1) + bs = 0; + if (bs) + s->vertical_bs[((x0 + i) >> 3) + ((y0 + j) >> 2) * s->bs_width] = bs; + } + } +} +#undef LUMA +#undef CB +#undef CR + +void ff_hevc_hls_filter(HEVCContext *s, int x, int y) +{ + int c_idx_min = s->sh.slice_sample_adaptive_offset_flag[0] != 0 ? 0 : 1; + int c_idx_max = s->sh.slice_sample_adaptive_offset_flag[1] != 0 ? 3 : 1; + deblocking_filter_CTB(s, x, y); + if (s->sps->sao_enabled) + sao_filter_CTB(s, x, y, c_idx_min, c_idx_max); +} + +void ff_hevc_hls_filters(HEVCContext *s, int x_ctb, int y_ctb, int ctb_size) +{ + if (y_ctb && x_ctb) + ff_hevc_hls_filter(s, x_ctb - ctb_size, y_ctb - ctb_size); + if (y_ctb && x_ctb >= s->sps->width - ctb_size) + ff_hevc_hls_filter(s, x_ctb, y_ctb - ctb_size); + if (x_ctb && y_ctb >= s->sps->height - ctb_size) + ff_hevc_hls_filter(s, x_ctb - ctb_size, y_ctb); +} |