From patchwork Wed Apr 18 11:08:07 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul B Mahol X-Patchwork-Id: 8485 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.2.1.85 with SMTP id c82csp2958713jad; Wed, 18 Apr 2018 04:08:59 -0700 (PDT) X-Google-Smtp-Source: AIpwx48/2FQbxNBv3RfIyA4uDM9iA1A6RidO+kfRBke62RIG51c7fpCuLUHXWHoTcgoq7e3gZri3 X-Received: by 10.28.150.194 with SMTP id y185mr1549945wmd.29.1524049739039; Wed, 18 Apr 2018 04:08:59 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1524049738; cv=none; d=google.com; s=arc-20160816; b=mfiWIAK3jDoh5cmQuNyM5gczOaY/bZNqhpcQR8CbzUOoic4Bj3cgqCSuT6fkdNh4Aq ns7gOmShBBqTCOgR0/WHQj72plB7D+ky4A6bYybri0p5x/nfcY/70icFPr698POU6lDF pE8Zp3CFYFgyMamhJpxxULAk9ol8gPj0zK7ymYrMSjbD+xb6TNpO29hB3n9VNe+JtxlA uNmt1zmS52i72f96usUoBHaaPEprktOV5w5UR/6S5DRf0kHlGW6zAuT85VJDynDZASsY qimFZV389xuw+0iTbHuTA+lU6I9SHgH4ytqLT1bzGD6J+jAqVb3F2edVEk0NidloQ59n If/Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version:reply-to :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:references:in-reply-to:message-id:date :to:from:dkim-signature:delivered-to:arc-authentication-results; bh=ED1EiZzOsF5RtN4jZ87VFxOLJFgx1pjkEtLBbw9MO38=; b=wJl6vWyqalwpiXoNb7ZqSzmmZfyyqraJ0ChM5ElE+a2pKXRnV3yNsL3ss6ijlYJyvc eYhqaa81FGT/hu0x0WPK5ovSZ4atmKc2zqyWWMM5IwmcsGfJYS9DTfICOHwjXkgNOGXX 1rK0K/eB3pzRWTa7E2ywBP2BlD+8+UxJNmiZ7OojaDW2n2AQ1Oafi/qVXO0gIsHCn2Rq amm4V+fK4qnx0LjXZ9NPrgoyYHIPU2L7VpaBLmyw9Pqf+F3FCwkse0EVb3SrrLR2T4cK hRJmVVHYdVhQl7sK732dfvsG9CC98czukQUD8tXVTIII0Lix+tL+yi4jf4003S6Hx9hq fcug== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20161025 header.b=P5IdQT9Z; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id r188si958613wmg.181.2018.04.18.04.08.57; Wed, 18 Apr 2018 04:08:58 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.s=20161025 header.b=P5IdQT9Z; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org; dmarc=fail (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 08090689FC4; Wed, 18 Apr 2018 14:08:29 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wr0-f175.google.com (mail-wr0-f175.google.com [209.85.128.175]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id ACAF1689A96 for ; Wed, 18 Apr 2018 14:08:22 +0300 (EEST) Received: by mail-wr0-f175.google.com with SMTP id f14-v6so3682268wre.4 for ; Wed, 18 Apr 2018 04:08:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references; bh=X/eHX3oEky2nBqigKXW/oXVL3LhG6tO+cOZMoEdjuzk=; b=P5IdQT9Ze03GteKyFBZeaIu4H07etZe487jBouOoXl477yDO8eBkNhNeJM/dPZUw9q weAsGgEUVB4NzdWINmFvkSOA/Nxu0lnevEv0bifrH/EKuqfHHFhpnuAdh5ox7ph+VOON iB9xpik5CSoyW8W3qeHNe/udqRyTXuYJd++ZCLACsojYZ3rQqVAR3aFLPgmPZmwWCp+D tIt6d8Kv5dKA5kFF2vCUhkVNzTvFJ9BUa1wHgJwZwSL4FblXHl+hDB3W8PHQUnlm1QKc Z8e4R3boEXMOufSTp+AHp41V9BjePep5X1/pkyWHhsQOOpGxV+77y7n6/0FhVaIcmWjO G5wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=X/eHX3oEky2nBqigKXW/oXVL3LhG6tO+cOZMoEdjuzk=; b=WXtIvwBaBfvJlxmu+Y82FyQzWDmPFeh/bidkl8ZZfLfNEUMuMPVq9lnmWcKmkXkiZ1 3g5/mIIsBtdNwt2F098WBqvDa2FH35yptDrF4fhuqrP6VqmOsYuHHZUBnhShsPMoILzn 5kJChHtm1BYZRxtYtz+VwTjlAz7rXj3zdsPIImZSkzgDRhQSyfVThXS/HlenpONyi5AP sT0MWQHB2nS1NdBAK5phIniwr4gTLpwaxP+byfXwQ7nVUzOfPHiy9iBdBEDPk13kNZOc +Knofee/+etGTwRkF2UMSg8aQ+AX0HGFthx/+beSqRNIKz+XqJgTjFIYU1cEW2jBZsBK Tzjw== X-Gm-Message-State: ALQs6tAX/VTYlv3r+bCRUb28MkVLEDyBfFW3KsKpThEttmlqHFgGcDXN 51JvVh9ia1sf03gO+70JzoMx9g== X-Received: by 2002:adf:c4b6:: with SMTP id m51-v6mr1395966wrf.126.1524049728737; Wed, 18 Apr 2018 04:08:48 -0700 (PDT) Received: from localhost.localdomain ([94.250.174.60]) by smtp.gmail.com with ESMTPSA id z12-v6sm910827wrg.20.2018.04.18.04.08.47 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 18 Apr 2018 04:08:48 -0700 (PDT) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Wed, 18 Apr 2018 13:08:07 +0200 Message-Id: <20180418110807.14156-1-onemda@gmail.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20180417205551.19151-1-onemda@gmail.com> References: <20180417205551.19151-1-onemda@gmail.com> Subject: [FFmpeg-devel] [PATCH] avfilter: add deblock filter X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Signed-off-by: Paul B Mahol --- doc/filters.texi | 59 +++++++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_deblock.c | 409 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 470 insertions(+) create mode 100644 libavfilter/vf_deblock.c diff --git a/doc/filters.texi b/doc/filters.texi index 77a1d49520..53e2d70076 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -7078,6 +7078,65 @@ e.g. banding detection threshold is triggered for all color components. The default is disabled. @end table +@section deblock + +Remove blocking artifacts from input video. + +The filter accepts the following options: + +@table @option +@item filter +Set filter type, can be @var{weak} or @var{strong}. Default is @var{strong}. +This controls what kind of deblocking is applied. + +@item block +Set size of block, allowed range is from 4 to 512. Default is @var{8}. + +@item alpha +@item beta +@item gamma +@item delta +Set blocking detection thresholds. Allowed range is 0 to 1. +Defaults are: @var{0.098} for @var{alpha} and @var{0.05} for the rest. +Using higher threshold gives more deblocking strength. +Setting @var{alpha} controls threshold detection at exact edge of block. +Remaining options controls threshold detection near the edge. Each one for +bellow/above or left/right. Setting any of those to @var{0} disables +deblocking. + +@item planes +Set planes to filter. Default is to filter all available planes. +@end table + +@subsection Examples + +@itemize +@item +Deblock using weak filter and block size of 4 pixels. +@example +deblock=filter=weak:block=4 +@end example + +@item +Deblock using strong filter, block size of 4 pixels and custom thresholds for +deblocking more edges. +@example +deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05 +@end example + +@item +Similar as above, but filter only first plane. +@example +deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05:planes=1 +@end example + +@item +Similar as above, but filter only second and third plane. +@example +deblock=filter=strong:block=4:alpha=0.12:beta=0.07:gamma=0.06:delta=0.05:planes=6 +@end example +@end itemize + @anchor{decimate} @section decimate diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 7fc3de3bb2..0cd964ee6f 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -173,6 +173,7 @@ OBJS-$(CONFIG_CURVES_FILTER) += vf_curves.o OBJS-$(CONFIG_DATASCOPE_FILTER) += vf_datascope.o OBJS-$(CONFIG_DCTDNOIZ_FILTER) += vf_dctdnoiz.o OBJS-$(CONFIG_DEBAND_FILTER) += vf_deband.o +OBJS-$(CONFIG_DEBLOCK_FILTER) += vf_deblock.o OBJS-$(CONFIG_DECIMATE_FILTER) += vf_decimate.o OBJS-$(CONFIG_DECONVOLVE_FILTER) += vf_convolve.o framesync.o OBJS-$(CONFIG_DEFLATE_FILTER) += vf_neighbor.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index bd55463bfc..643eec287d 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -165,6 +165,7 @@ extern AVFilter ff_vf_curves; extern AVFilter ff_vf_datascope; extern AVFilter ff_vf_dctdnoiz; extern AVFilter ff_vf_deband; +extern AVFilter ff_vf_deblock; extern AVFilter ff_vf_decimate; extern AVFilter ff_vf_deconvolve; extern AVFilter ff_vf_deflate; diff --git a/libavfilter/vf_deblock.c b/libavfilter/vf_deblock.c new file mode 100644 index 0000000000..0c2627370e --- /dev/null +++ b/libavfilter/vf_deblock.c @@ -0,0 +1,409 @@ +/* + * Copyright (c) 2018 Paul B Mahol + * + * 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/imgutils.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" + +#include "avfilter.h" +#include "formats.h" +#include "internal.h" +#include "video.h" + +enum FilterType { WEAK, STRONG, NB_FILTER }; + +typedef struct DeblockContext { + const AVClass *class; + const AVPixFmtDescriptor *desc; + int filter; + int block; + int planes; + float alpha; + float beta; + float gamma; + float delta; + + int ath; + int bth; + int gth; + int dth; + int max; + int depth; + int bpc; + int nb_planes; + int planewidth[4]; + int planeheight[4]; + + void (*deblockh)(uint8_t *dst, ptrdiff_t dst_linesize, int block, + int ath, int bth, int gth, int dth, int max); + void (*deblockv)(uint8_t *dst, ptrdiff_t dst_linesize, int block, + int ath, int bth, int gth, int dth, int max); +} DeblockContext; + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pixel_fmts[] = { + AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, + AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, + AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, + AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P, + AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, + AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9, + AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, + AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12, + AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, + AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16, + AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, + AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10, + AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, + AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16, + AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, + AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16, + AV_PIX_FMT_NONE + }; + AVFilterFormats *formats = ff_make_format_list(pixel_fmts); + if (!formats) + return AVERROR(ENOMEM); + return ff_set_common_formats(ctx, formats); +} + +#define WEAK_HFILTER(name, type, ldiv) \ +static void deblockh##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \ + int ath, int bth, int gth, int dth, int max) \ +{ \ + type *dst; \ + int x; \ + \ + dst = (type *)dstp; \ + dst_linesize /= ldiv; \ + \ + for (x = 0; x < block; x++) { \ + int delta = dst[x] - dst[x - dst_linesize]; \ + int A, B, C, D, a, b, c, d; \ + \ + if (FFABS(delta) >= ath || \ + FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \ + FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= gth) \ + continue; \ + \ + A = dst[x - 2 * dst_linesize]; \ + B = dst[x - 1 * dst_linesize]; \ + C = dst[x + 0 * dst_linesize]; \ + D = dst[x + 1 * dst_linesize]; \ + \ + a = A + delta / 8; \ + b = B + delta / 2; \ + c = C - delta / 2; \ + d = D - delta / 8; \ + \ + dst[x - 2 * dst_linesize] = av_clip(a, 0, max); \ + dst[x - 1 * dst_linesize] = av_clip(b, 0, max); \ + dst[x + 0 * dst_linesize] = av_clip(c, 0, max); \ + dst[x + 1 * dst_linesize] = av_clip(d, 0, max); \ + } \ +} + +WEAK_HFILTER(8, uint8_t, 1) +WEAK_HFILTER(16, uint16_t, 2) + +#define WEAK_VFILTER(name, type, ldiv) \ +static void deblockv##name##_weak(uint8_t *dstp, ptrdiff_t dst_linesize, int block, \ + int ath, int bth, int gth, int dth, int max) \ +{ \ + type *dst; \ + int y; \ + \ + dst = (type *)dstp; \ + dst_linesize /= ldiv; \ + \ + for (y = 0; y < block; y++) { \ + int delta = dst[0] - dst[-1]; \ + int A, B, C, D, a, b, c, d; \ + \ + if (FFABS(delta) >= ath || \ + FFABS(dst[-1] - dst[-2]) >= bth || \ + FFABS(dst[0] - dst[1]) >= gth) \ + continue; \ + \ + A = dst[-2]; \ + B = dst[-1]; \ + C = dst[+0]; \ + D = dst[+1]; \ + \ + a = A + delta / 8; \ + b = B + delta / 2; \ + c = C - delta / 2; \ + d = D - delta / 8; \ + \ + dst[-2] = av_clip(a, 0, max); \ + dst[-1] = av_clip(b, 0, max); \ + dst[+0] = av_clip(c, 0, max); \ + dst[+1] = av_clip(d, 0, max); \ + \ + dst += dst_linesize; \ + } \ +} + +WEAK_VFILTER(8, uint8_t, 1) +WEAK_VFILTER(16, uint16_t, 2) + +#define STRONG_HFILTER(name, type, ldiv) \ +static void deblockh##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\ + int ath, int bth, int gth, int dth, int max) \ +{ \ + type *dst; \ + int x; \ + \ + dst = (type *)dstp; \ + dst_linesize /= ldiv; \ + \ + for (x = 0; x < block; x++) { \ + int A, B, C, D, E, F, a, b, c, d, e, f; \ + int delta = dst[x] - dst[x - dst_linesize]; \ + \ + if (FFABS(delta) >= ath || \ + FFABS(dst[x - 1 * dst_linesize] - dst[x - 2 * dst_linesize]) >= bth || \ + FFABS(dst[x + 1 * dst_linesize] - dst[x + 2 * dst_linesize]) >= gth || \ + FFABS(dst[x + 0 * dst_linesize] - dst[x + 1 * dst_linesize]) >= dth) \ + continue; \ + \ + A = dst[x - 3 * dst_linesize]; \ + B = dst[x - 2 * dst_linesize]; \ + C = dst[x - 1 * dst_linesize]; \ + D = dst[x + 0 * dst_linesize]; \ + E = dst[x + 1 * dst_linesize]; \ + F = dst[x + 2 * dst_linesize]; \ + \ + a = A + delta / 8; \ + b = B + delta / 4; \ + c = C + delta / 2; \ + d = D - delta / 2; \ + e = E - delta / 4; \ + f = F - delta / 8; \ + \ + dst[x - 3 * dst_linesize] = av_clip(a, 0, max); \ + dst[x - 2 * dst_linesize] = av_clip(b, 0, max); \ + dst[x - 1 * dst_linesize] = av_clip(c, 0, max); \ + dst[x + 0 * dst_linesize] = av_clip(d, 0, max); \ + dst[x + 1 * dst_linesize] = av_clip(e, 0, max); \ + dst[x + 2 * dst_linesize] = av_clip(f, 0, max); \ + } \ +} + +STRONG_HFILTER(8, uint8_t, 1) +STRONG_HFILTER(16, uint16_t, 2) + +#define STRONG_VFILTER(name, type, ldiv) \ +static void deblockv##name##_strong(uint8_t *dstp, ptrdiff_t dst_linesize, int block,\ + int ath, int bth, int gth, int dth, int max) \ +{ \ + type *dst; \ + int y; \ + \ + dst = (type *)dstp; \ + dst_linesize /= ldiv; \ + \ + for (y = 0; y < block; y++) { \ + int A, B, C, D, E, F, a, b, c, d, e, f; \ + int delta = dst[0] - dst[-1]; \ + \ + if (FFABS(delta) >= ath || \ + FFABS(dst[-1] - dst[-2]) >= bth || \ + FFABS(dst[+1] - dst[+2]) >= gth || \ + FFABS(dst[+0] - dst[+1]) >= dth) \ + continue; \ + \ + A = dst[-3]; \ + B = dst[-2]; \ + C = dst[-1]; \ + D = dst[+0]; \ + E = dst[+1]; \ + F = dst[+2]; \ + \ + a = A + delta / 8; \ + b = B + delta / 4; \ + c = C + delta / 2; \ + d = D - delta / 2; \ + e = E - delta / 4; \ + f = F - delta / 8; \ + \ + dst[-3] = av_clip(a, 0, max); \ + dst[-2] = av_clip(b, 0, max); \ + dst[-1] = av_clip(c, 0, max); \ + dst[+0] = av_clip(d, 0, max); \ + dst[+1] = av_clip(e, 0, max); \ + dst[+2] = av_clip(f, 0, max); \ + \ + dst += dst_linesize; \ + } \ +} + +STRONG_VFILTER(8, uint8_t, 1) +STRONG_VFILTER(16, uint16_t, 2) + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + DeblockContext *s = ctx->priv; + AVFilterLink *inlink = ctx->inputs[0]; + + s->desc = av_pix_fmt_desc_get(outlink->format); + if (!s->desc) + return AVERROR_BUG; + s->nb_planes = av_pix_fmt_count_planes(outlink->format); + s->depth = s->desc->comp[0].depth; + s->bpc = (s->depth + 7) / 8; + s->max = (1 << s->depth) - 1; + s->ath = s->alpha * s->max; + s->bth = s->beta * s->max; + s->gth = s->gamma * s->max; + s->dth = s->delta * s->max; + + if (s->depth <= 8 && s->filter == WEAK) { + s->deblockh = deblockh8_weak; + s->deblockv = deblockv8_weak; + } else if (s->depth >= 8 && s->filter == WEAK) { + s->deblockh = deblockh16_weak; + s->deblockv = deblockv16_weak; + } + if (s->depth <= 8 && s->filter == STRONG) { + s->deblockh = deblockh8_strong; + s->deblockv = deblockv8_strong; + } else if (s->depth >= 8 && s->filter == STRONG) { + s->deblockh = deblockh16_strong; + s->deblockv = deblockv16_strong; + } + + s->planewidth[1] = s->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->desc->log2_chroma_w); + s->planewidth[0] = s->planewidth[3] = inlink->w; + + s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->desc->log2_chroma_h); + s->planeheight[0] = s->planeheight[3] = inlink->h; + + return 0; +} + +static int filter_frame(AVFilterLink *inlink, AVFrame *in) +{ + AVFilterContext *ctx = inlink->dst; + AVFilterLink *outlink = ctx->outputs[0]; + DeblockContext *s = ctx->priv; + const int block = s->block; + AVFrame *out; + int plane, x, y; + + if (av_frame_is_writable(in)) { + out = in; + } else { + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) { + av_frame_free(&in); + return AVERROR(ENOMEM); + } + av_frame_copy_props(out, in); + } + + for (plane = 0; plane < s->nb_planes; plane++) { + const int width = s->planewidth[plane]; + const int height = s->planeheight[plane]; + const uint8_t *src = (const uint8_t *)in->data[plane]; + uint8_t *dst = (uint8_t *)out->data[plane]; + + if (in != out) + av_image_copy_plane(dst, out->linesize[plane], + src, in->linesize[plane], + width * s->bpc, height); + + if (!((1 << plane) & s->planes)) + continue; + + for (x = block; x < width; x += block) + s->deblockv(dst + x * s->bpc, out->linesize[plane], + FFMIN(block, height), s->ath, s->bth, s->gth, s->dth, s->max); + + for (y = block; y < height; y += block) { + dst += out->linesize[plane] * block; + + s->deblockh(dst, out->linesize[plane], + FFMIN(block, width), + s->ath, s->bth, s->gth, s->dth, s->max); + + for (x = block; x < width; x += block) { + s->deblockh(dst + x * s->bpc, out->linesize[plane], + FFMIN(block, width - x), + s->ath, s->bth, s->gth, s->dth, s->max); + s->deblockv(dst + x * s->bpc, out->linesize[plane], + FFMIN(block, height - y), + s->ath, s->bth, s->gth, s->dth, s->max); + } + } + } + + if (in != out) + av_frame_free(&in); + return ff_filter_frame(outlink, out); +} + +#define OFFSET(x) offsetof(DeblockContext, x) +#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM + +static const AVOption deblock_options[] = { + { "filter", "set type of filter", OFFSET(filter), AV_OPT_TYPE_INT, {.i64=STRONG},0, 1, FLAGS, "filter" }, + { "weak", 0, 0, AV_OPT_TYPE_CONST, {.i64=WEAK}, 0, 0, FLAGS, "filter" }, + { "strong", 0, 0, AV_OPT_TYPE_CONST, {.i64=STRONG},0, 0, FLAGS, "filter" }, + { "block", "set size of block", OFFSET(block), AV_OPT_TYPE_INT, {.i64=8}, 4, 512, FLAGS }, + { "alpha", "set 1st detection threshold", OFFSET(alpha), AV_OPT_TYPE_FLOAT, {.dbl=.098}, 0, 1, FLAGS }, + { "beta", "set 2nd detection threshold", OFFSET(beta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, + { "gamma", "set 3rd detection threshold", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, + { "delta", "set 4th detection threshold", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=.05}, 0, 1, FLAGS }, + { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS }, + { NULL }, +}; + +static const AVFilterPad inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = filter_frame, + }, + { NULL } +}; + +static const AVFilterPad outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(deblock); + +AVFilter ff_vf_deblock = { + .name = "deblock", + .description = NULL_IF_CONFIG_SMALL("Deblock video."), + .priv_size = sizeof(DeblockContext), + .priv_class = &deblock_class, + .query_formats = query_formats, + .inputs = inputs, + .outputs = outputs, +};