From patchwork Tue Aug 1 09:53:58 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul B Mahol X-Patchwork-Id: 4565 Delivered-To: ffmpegpatchwork@gmail.com Received: by 10.103.1.85 with SMTP id 82csp3467074vsb; Tue, 1 Aug 2017 03:02:18 -0700 (PDT) X-Received: by 10.28.154.211 with SMTP id c202mr964540wme.91.1501581738849; Tue, 01 Aug 2017 03:02:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1501581738; cv=none; d=google.com; s=arc-20160816; b=v/BU8ogbwSkR3ZNe9NTk7ugqLdHlC5qUAphW7A3yFN6CqKvqtBTjaiXQDmgv0s3Tbd rmCzOYzPkFlBZloEjzdRYVlv5q950P2xnkobv4e7svABW48qYCLS+xiwfc0mtgFt/5U9 13/hyC+j77ljrUuSe9OsGOiwEq7ZSHluJmnvoOkrAv8QyJtpJJDkDWAfe4NekB45zT0J B2PDwJpXM9m8G0ryHTzE/y3i4DSSHjeWaAkjJK5W3WaMfApHemYP6UhFjPk0q1WPqxGz a9bnMbNsiWjEpgUX7oFcV76xmdn/VXt3kAex86THbiWVLvSGOZ60VBC2VfL8rp3aeF7E uf7g== 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:message-id:date:to:from:dkim-signature :delivered-to:arc-authentication-results; bh=az3sRdXqeWP1xcWxKNfyNh8kOtYTHrxEsXVZxB7VjTk=; b=eQIuEfTdIUgD8Dr1oUDlbCBuxr5j6uktY+dfDxx+okPhWlb+x2cItGEV6wf2jIr30s KjDAM/paJqBDtCOcqA0pprsauXwDEqHkkVPHCiqZYOlJ7l9TUHIkdJwzbs3ancRlo41A CLTmPDavpj9uTCdKu4lzIYaGo58w+lINH9DOb175Pw4dc/oCdukayqHDd5JMFJ/16mZS xB9tUS2VrOm+JDantQCiK6HCWOZbviIposWLXkAp3WPvCJzCOS8NgC5ftdJbVlClZrI2 rNTVEMVkflPzc5qBU9UCkIwcRsna53vLC/bRlNWjUnGQQsedkxkNxKSPkjzrmW4BuWf5 CGIQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@gmail.com header.b=VZylda4H; 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=NONE 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 k33si27665597wre.240.2017.08.01.03.02.17; Tue, 01 Aug 2017 03:02:18 -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.b=VZylda4H; 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=NONE 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 3631D6883D4; Tue, 1 Aug 2017 13:02:12 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wm0-f67.google.com (mail-wm0-f67.google.com [74.125.82.67]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id 35C7A6883D4 for ; Tue, 1 Aug 2017 13:02:05 +0300 (EEST) Received: by mail-wm0-f67.google.com with SMTP id x64so2246842wmg.1 for ; Tue, 01 Aug 2017 03:02:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=GfJCwnQCKVGCkb4masl97Yo2SIEdgeqy8sCW8LmtPT8=; b=VZylda4HiEQF2s4+zKsgr6Omo3GdSaFMSGcl2h1aPeogGEmzswvY0eXlswufhhdz14 QItRZIqV641qKrLOo2G8GwaH2x8MtJAKfNywt7kbZ41ux3O7fT8Wg6eSX6VGF7Tl9dfR I6FvOEn3dYQQLNx4O3l/lTVvgek7M3LzarOCbNXHGfOnFOzeNb9I6gADaJqKsa99/8hj TiUw1r/cydSTfVlE9rMIcPYw9ZkpMcWN7VmVZgrxj4oBdRF00E8/SzsJNy+aK9w5JAzJ qMlY0sWTYcjWLlruLs7zQDv/w+i9v5phjriQE7lIgI4uyopPrKC8/KR5oON37mL5boiX Ot3w== 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; bh=GfJCwnQCKVGCkb4masl97Yo2SIEdgeqy8sCW8LmtPT8=; b=aN3dveAeaGo23J+YtEat6yjQ5NYQGFd3J4FMh+g5Q9KejIjRWWtxeZxGZ1tR2tIsKL cBBuJPVmJczdl3dBPg7HZCI5RE25pAj9a8SDsUOYjUMAutHV7b4cXqqXtWWICbErJe4v qEnpeiKmDZLDDAfhiixn3DT0zNuKHp4Dp1Finh6rGzs3T0BfHWVNk0vaJlk5tUX+4DmN rYmMg63DqUcnVoUYWSH454uEkrKSaiYMmR9WOQqF4jvT6VxhidGCxvdI/aNYZLl874ai kwLWg7+IwFNab6Ctx+ruZ2eOh9poYCnRe/IuH041SqBc7tzPht8qI58Z+C6o9dQSEX8q Nx1A== X-Gm-Message-State: AIVw113YVJYq1sdK8tZyZRVDd5uPo0Td8yhNJxyX1EPVhpoWz2hU5scQ sbvohYMFmwViU3lA X-Received: by 10.28.136.147 with SMTP id k141mr968917wmd.131.1501581251353; Tue, 01 Aug 2017 02:54:11 -0700 (PDT) Received: from localhost.localdomain ([94.250.174.60]) by smtp.gmail.com with ESMTPSA id e65sm907407wmc.21.2017.08.01.02.54.09 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 01 Aug 2017 02:54:10 -0700 (PDT) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Tue, 1 Aug 2017 11:53:58 +0200 Message-Id: <20170801095358.8569-1-onemda@gmail.com> X-Mailer: git-send-email 2.9.3 Subject: [FFmpeg-devel] [PATCH] avfilter: add unpremultiply 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 | 13 ++ libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_unpremultiply.c | 431 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 446 insertions(+) create mode 100644 libavfilter/vf_unpremultiply.c diff --git a/doc/filters.texi b/doc/filters.texi index 4089135..a50696a 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -14532,6 +14532,19 @@ ffmpeg -i INPUT -vf trim=duration=1 @end itemize +@section unpremultiply +Apply alpha unpremultiply effect to input video stream using first plane +of second stream as alpha. + +Both streams must have same dimensions and same pixel format. + +The filter accepts the following option: + +@table @option +@item planes +Set which planes will be processed, unprocessed planes will be copied. +By default value 0xf, all planes will be processed. +@end table @anchor{unsharp} @section unsharp diff --git a/libavfilter/Makefile b/libavfilter/Makefile index 4d61d78..c093736 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -314,6 +314,7 @@ OBJS-$(CONFIG_TILE_FILTER) += vf_tile.o OBJS-$(CONFIG_TINTERLACE_FILTER) += vf_tinterlace.o OBJS-$(CONFIG_TRANSPOSE_FILTER) += vf_transpose.o OBJS-$(CONFIG_TRIM_FILTER) += trim.o +OBJS-$(CONFIG_UNPREMULTIPLY_FILTER) += vf_unpremultiply.o OBJS-$(CONFIG_UNSHARP_FILTER) += vf_unsharp.o OBJS-$(CONFIG_USPP_FILTER) += vf_uspp.o OBJS-$(CONFIG_VAGUEDENOISER_FILTER) += vf_vaguedenoiser.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index b1c2d11..0fca662 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -325,6 +325,7 @@ static void register_all(void) REGISTER_FILTER(TINTERLACE, tinterlace, vf); REGISTER_FILTER(TRANSPOSE, transpose, vf); REGISTER_FILTER(TRIM, trim, vf); + REGISTER_FILTER(UNPREMULTIPLY, unpremultiply, vf); REGISTER_FILTER(UNSHARP, unsharp, vf); REGISTER_FILTER(USPP, uspp, vf); REGISTER_FILTER(VAGUEDENOISER, vaguedenoiser, vf); diff --git a/libavfilter/vf_unpremultiply.c b/libavfilter/vf_unpremultiply.c new file mode 100644 index 0000000..2e0d09a --- /dev/null +++ b/libavfilter/vf_unpremultiply.c @@ -0,0 +1,431 @@ +/* + * Copyright (c) 2017 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/pixdesc.h" +#include "libavutil/opt.h" +#include "avfilter.h" +#include "formats.h" +#include "framesync2.h" +#include "internal.h" +#include "video.h" + +typedef struct UnPreMultiplyContext { + const AVClass *class; + int width[4], height[4]; + int linesize[4]; + int nb_planes; + int planes; + int half, max, offset; + FFFrameSync fs; + + void (*unpremultiply[4])(const uint8_t *msrc, const uint8_t *asrc, + uint8_t *dst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset); +} UnPreMultiplyContext; + +#define OFFSET(x) offsetof(UnPreMultiplyContext, x) +#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM + +static const AVOption unpremultiply_options[] = { + { "planes", "set planes", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS }, + { NULL } +}; + +AVFILTER_DEFINE_CLASS(unpremultiply); + +static int query_formats(AVFilterContext *ctx) +{ + static const enum AVPixelFormat pix_fmts[] = { + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, + AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV444P10, + AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV444P14, + AV_PIX_FMT_YUV444P16, + 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_GRAY8, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY16, + AV_PIX_FMT_NONE + }; + + return ff_set_common_formats(ctx, ff_make_format_list(pix_fmts)); +} + +static void unpremultiply8(const uint8_t *msrc, const uint8_t *asrc, + uint8_t *dst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < 255) + dst[x] = FFMIN(msrc[x] * 255 / asrc[x], 255); + else + dst[x] = msrc[x]; + } + + dst += dlinesize; + msrc += mlinesize; + asrc += alinesize; + } +} + +static void unpremultiply8yuv(const uint8_t *msrc, const uint8_t *asrc, + uint8_t *dst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < 255) + dst[x] = FFMIN((msrc[x] - 128) * 255 / asrc[x] + 128, 255); + else + dst[x] = msrc[x]; + } + + dst += dlinesize; + msrc += mlinesize; + asrc += alinesize; + } +} + +static void unpremultiply8offset(const uint8_t *msrc, const uint8_t *asrc, + uint8_t *dst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < 255) + dst[x] = FFMIN((msrc[x] - offset) * 255 / asrc[x] + offset, 255); + else + dst[x] = msrc[x]; + } + + dst += dlinesize; + msrc += mlinesize; + asrc += alinesize; + } +} + +static void unpremultiply16(const uint8_t *mmsrc, const uint8_t *aasrc, + uint8_t *ddst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + const uint16_t *msrc = (const uint16_t *)mmsrc; + const uint16_t *asrc = (const uint16_t *)aasrc; + uint16_t *dst = (uint16_t *)ddst; + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < max) + dst[x] = FFMIN(msrc[x] * max / asrc[x], max); + else + dst[x] = msrc[x]; + } + + dst += dlinesize / 2; + msrc += mlinesize / 2; + asrc += alinesize / 2; + } +} + +static void unpremultiply16yuv(const uint8_t *mmsrc, const uint8_t *aasrc, + uint8_t *ddst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + const uint16_t *msrc = (const uint16_t *)mmsrc; + const uint16_t *asrc = (const uint16_t *)aasrc; + uint16_t *dst = (uint16_t *)ddst; + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < max) + dst[x] = FFMIN((msrc[x] - half) * max / asrc[x] + half, max); + else + dst[x] = msrc[x]; + } + + dst += dlinesize / 2; + msrc += mlinesize / 2; + asrc += alinesize / 2; + } +} + +static void unpremultiply16offset(const uint8_t *mmsrc, const uint8_t *aasrc, + uint8_t *ddst, + ptrdiff_t mlinesize, ptrdiff_t alinesize, + ptrdiff_t dlinesize, + int w, int h, + int half, int max, int offset) +{ + const uint16_t *msrc = (const uint16_t *)mmsrc; + const uint16_t *asrc = (const uint16_t *)aasrc; + uint16_t *dst = (uint16_t *)ddst; + int x, y; + + for (y = 0; y < h; y++) { + for (x = 0; x < w; x++) { + if (asrc[x] > 0 && asrc[x] < max) + dst[x] = FFMIN((msrc[x] - offset) * max / asrc[x] + offset, max); + else + dst[x] = msrc[x]; + } + + dst += dlinesize / 2; + msrc += mlinesize / 2; + asrc += alinesize / 2; + } +} + +static int process_frame(FFFrameSync *fs) +{ + AVFilterContext *ctx = fs->parent; + UnPreMultiplyContext *s = fs->opaque; + AVFilterLink *outlink = ctx->outputs[0]; + AVFrame *out, *base, *alpha; + int ret; + + if ((ret = ff_framesync2_get_frame(&s->fs, 0, &base, 0)) < 0 || + (ret = ff_framesync2_get_frame(&s->fs, 1, &alpha, 0)) < 0) + return ret; + + if (ctx->is_disabled) { + out = av_frame_clone(base); + if (!out) + return AVERROR(ENOMEM); + } else { + int p, full, limited; + + out = ff_get_video_buffer(outlink, outlink->w, outlink->h); + if (!out) + return AVERROR(ENOMEM); + av_frame_copy_props(out, base); + + full = base->color_range == AVCOL_RANGE_JPEG; + limited = base->color_range == AVCOL_RANGE_MPEG; + + switch (outlink->format) { + case AV_PIX_FMT_YUV444P: + s->unpremultiply[0] = full ? unpremultiply8 : unpremultiply8offset; + s->unpremultiply[1] = unpremultiply8yuv; + s->unpremultiply[2] = unpremultiply8yuv; + break; + case AV_PIX_FMT_YUVJ444P: + s->unpremultiply[0] = unpremultiply8; + s->unpremultiply[1] = unpremultiply8yuv; + s->unpremultiply[2] = unpremultiply8yuv; + break; + case AV_PIX_FMT_GBRP: + s->unpremultiply[0] = limited ? unpremultiply8offset : unpremultiply8; + s->unpremultiply[1] = limited ? unpremultiply8offset : unpremultiply8; + s->unpremultiply[2] = limited ? unpremultiply8offset : unpremultiply8; + break; + case AV_PIX_FMT_YUV444P9: + case AV_PIX_FMT_YUV444P10: + case AV_PIX_FMT_YUV444P12: + case AV_PIX_FMT_YUV444P14: + case AV_PIX_FMT_YUV444P16: + s->unpremultiply[0] = full ? unpremultiply16 : unpremultiply16offset; + s->unpremultiply[1] = unpremultiply16yuv; + s->unpremultiply[2] = unpremultiply16yuv; + break; + case AV_PIX_FMT_GBRP9: + case AV_PIX_FMT_GBRP10: + case AV_PIX_FMT_GBRP12: + case AV_PIX_FMT_GBRP14: + case AV_PIX_FMT_GBRP16: + s->unpremultiply[0] = limited ? unpremultiply16offset : unpremultiply16; + s->unpremultiply[1] = limited ? unpremultiply16offset : unpremultiply16; + s->unpremultiply[2] = limited ? unpremultiply16offset : unpremultiply16; + break; + case AV_PIX_FMT_GRAY8: + s->unpremultiply[0] = limited ? unpremultiply8offset : unpremultiply8; + break; + case AV_PIX_FMT_GRAY10: + case AV_PIX_FMT_GRAY12: + case AV_PIX_FMT_GRAY16: + s->unpremultiply[0] = limited ? unpremultiply16offset : unpremultiply16; + break; + } + + for (p = 0; p < s->nb_planes; p++) { + if (!((1 << p) & s->planes)) { + av_image_copy_plane(out->data[p], out->linesize[p], base->data[p], base->linesize[p], + s->linesize[p], s->height[p]); + continue; + } + + s->unpremultiply[p](base->data[p], alpha->data[0], + out->data[p], + base->linesize[p], alpha->linesize[0], + out->linesize[p], + s->width[p], s->height[p], + s->half, s->max, s->offset); + } + } + out->pts = av_rescale_q(base->pts, s->fs.time_base, outlink->time_base); + + return ff_filter_frame(outlink, out); +} + +static int config_input(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + UnPreMultiplyContext *s = ctx->priv; + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format); + int vsub, hsub, ret, depth; + + s->nb_planes = av_pix_fmt_count_planes(inlink->format); + + if ((ret = av_image_fill_linesizes(s->linesize, inlink->format, inlink->w)) < 0) + return ret; + + hsub = desc->log2_chroma_w; + vsub = desc->log2_chroma_h; + s->height[1] = s->height[2] = AV_CEIL_RSHIFT(inlink->h, vsub); + s->height[0] = s->height[3] = inlink->h; + s->width[1] = s->width[2] = AV_CEIL_RSHIFT(inlink->w, hsub); + s->width[0] = s->width[3] = inlink->w; + + depth = desc->comp[0].depth; + s->max = (1 << depth) - 1; + s->half = (1 << depth) / 2; + s->offset = 16 << (depth - 8); + + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + UnPreMultiplyContext *s = ctx->priv; + AVFilterLink *base = ctx->inputs[0]; + AVFilterLink *alpha = ctx->inputs[1]; + FFFrameSyncIn *in; + int ret; + + if (base->format != alpha->format) { + av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n"); + return AVERROR(EINVAL); + } + if (base->w != alpha->w || + base->h != alpha->h) { + av_log(ctx, AV_LOG_ERROR, "First input link %s parameters " + "(size %dx%d) do not match the corresponding " + "second input link %s parameters (%dx%d) ", + ctx->input_pads[0].name, base->w, base->h, + ctx->input_pads[1].name, alpha->w, alpha->h); + return AVERROR(EINVAL); + } + + outlink->w = base->w; + outlink->h = base->h; + outlink->time_base = base->time_base; + outlink->sample_aspect_ratio = base->sample_aspect_ratio; + outlink->frame_rate = base->frame_rate; + + if ((ret = ff_framesync2_init(&s->fs, ctx, 2)) < 0) + return ret; + + in = s->fs.in; + in[0].time_base = base->time_base; + in[1].time_base = alpha->time_base; + in[0].sync = 1; + in[0].before = EXT_STOP; + in[0].after = EXT_INFINITY; + in[1].sync = 1; + in[1].before = EXT_STOP; + in[1].after = EXT_INFINITY; + s->fs.opaque = s; + s->fs.on_event = process_frame; + + return ff_framesync2_configure(&s->fs); +} + +static int activate(AVFilterContext *ctx) +{ + UnPreMultiplyContext *s = ctx->priv; + return ff_framesync2_activate(&s->fs); +} + +static av_cold void uninit(AVFilterContext *ctx) +{ + UnPreMultiplyContext *s = ctx->priv; + + ff_framesync2_uninit(&s->fs); +} + +static const AVFilterPad unpremultiply_inputs[] = { + { + .name = "main", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_input, + }, + { + .name = "alpha", + .type = AVMEDIA_TYPE_VIDEO, + }, + { NULL } +}; + +static const AVFilterPad unpremultiply_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, + { NULL } +}; + +AVFilter ff_vf_unpremultiply = { + .name = "unpremultiply", + .description = NULL_IF_CONFIG_SMALL("UnPreMultiply first stream with first plane of second stream."), + .priv_size = sizeof(UnPreMultiplyContext), + .uninit = uninit, + .query_formats = query_formats, + .activate = activate, + .inputs = unpremultiply_inputs, + .outputs = unpremultiply_outputs, + .priv_class = &unpremultiply_class, + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL, +};