From patchwork Mon Nov 18 11:09:51 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Paul B Mahol X-Patchwork-Id: 16319 Return-Path: X-Original-To: patchwork@ffaux-bg.ffmpeg.org Delivered-To: patchwork@ffaux-bg.ffmpeg.org Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by ffaux.localdomain (Postfix) with ESMTP id 514BC442852 for ; Mon, 18 Nov 2019 13:10:08 +0200 (EET) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 3D6E068A88F; Mon, 18 Nov 2019 13:10:08 +0200 (EET) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from mail-wr1-f67.google.com (mail-wr1-f67.google.com [209.85.221.67]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id F062268A2C6 for ; Mon, 18 Nov 2019 13:10:01 +0200 (EET) Received: by mail-wr1-f67.google.com with SMTP id l7so18917476wrp.6 for ; Mon, 18 Nov 2019 03:10:01 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id; bh=LIjtZHTNN8OMW8nHg7tQ3F6ogYF8sePGzlS1W4mIN5E=; b=BA5ltLiKCyKc4zPMt2dQ5VrqRSsFZSvHNDSBR0P+TnQ2z75/+DbwR1iur839bTDruD hOTB8LrkbhMwqBSQqC25EMSyOo27A+f0LGznrX0up+fgvxyGr+aLFcdmtkT9Mbr4BV+q 8msAm2mA97q3g7V1xBws8fA3uruR0BcZCDpQtfLBurjv10lHe9lVxd58XtGTWJ+r879G v3cBZTimtaK3yd9GehE32GsbU1Ei/H4vAKjL7kpGh+A6oj/v/f20b7LXzKCrpHuuEnUf imPrJRwO9jDwt9Zx/d46bU/XrW3Ckuo6y1Z1e8DIUKVt/8rJnqsXyy0F7ZvWYREOIuRR s93A== 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=LIjtZHTNN8OMW8nHg7tQ3F6ogYF8sePGzlS1W4mIN5E=; b=cZ4uX50MKUyVDFZG+M0pD+9neiXOsQd3jrT+ryB72PO8mQGpd7ijIeax56zgwGo9cA DOxA0C8XNBzRpdSYh4xgBKDojj3lAYCJu+SxLiFt5qqk5sWJhujZU+IcWCCyk5/DSjxr XVLYK9ish6PBPEgil/yPGTIQSWlkERXpHo8L0eMczhUu2M/T+EErs44aHyoyUZmvHGr0 iDRqQcJgZKunMJWHU2DkQkpzW8lavobZr/7145jya0behwWfhiZpq4+0I7nlJS4ErsTT p/iBJJsTRd3WvovV6YVDwvBFVmhD3tjqMT8KqlmVJ6hIFqRev+F3cl4IHVliXHkX87WM T0cQ== X-Gm-Message-State: APjAAAWepzb734+OWhHmqVuX/9sD93wrlhKNPLLR3pD+mOK0XzO1lB3T AGACsPorK2yRn2TXkBgop5lDiFtS X-Google-Smtp-Source: APXvYqx2FiGg/ROWQ5eDHy01o2il/Eak42RVss5nJW62hishIKHq/Z/M5x0KsWJ+0mPlcpZovfwIRw== X-Received: by 2002:adf:a31a:: with SMTP id c26mr28110287wrb.330.1574075399188; Mon, 18 Nov 2019 03:09:59 -0800 (PST) Received: from localhost.localdomain ([94.250.173.190]) by smtp.gmail.com with ESMTPSA id q17sm19468410wmj.12.2019.11.18.03.09.58 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Nov 2019 03:09:58 -0800 (PST) From: Paul B Mahol To: ffmpeg-devel@ffmpeg.org Date: Mon, 18 Nov 2019 12:09:51 +0100 Message-Id: <20191118110951.17299-1-onemda@gmail.com> X-Mailer: git-send-email 2.17.1 Subject: [FFmpeg-devel] [PATCH] avfilter/vf_chromakey: add >8 bit support 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 --- libavfilter/vf_chromakey.c | 142 +++++++++++++++++++++++++++++++++++-- 1 file changed, 137 insertions(+), 5 deletions(-) diff --git a/libavfilter/vf_chromakey.c b/libavfilter/vf_chromakey.c index 76a5e2056a..70484451b0 100644 --- a/libavfilter/vf_chromakey.c +++ b/libavfilter/vf_chromakey.c @@ -20,6 +20,7 @@ #include "libavutil/opt.h" #include "libavutil/imgutils.h" +#include "libavutil/intreadwrite.h" #include "avfilter.h" #include "formats.h" #include "internal.h" @@ -35,6 +36,9 @@ typedef struct ChromakeyContext { float blend; int is_yuv; + int depth; + int mid; + int max; int hsub_log2; int vsub_log2; @@ -64,6 +68,29 @@ static uint8_t do_chromakey_pixel(ChromakeyContext *ctx, uint8_t u[9], uint8_t v } } +static uint16_t do_chromakey_pixel16(ChromakeyContext *ctx, uint16_t u[9], uint16_t v[9]) +{ + int factor = 1 << (ctx->depth - 8); + double max = ctx->max; + double diff = 0.0; + int du, dv, i; + + for (i = 0; i < 9; ++i) { + du = (int)u[i] - (ctx->chromakey_uv[0] * factor); + dv = (int)v[i] - (ctx->chromakey_uv[1] * factor); + + diff += sqrt((du * du + dv * dv) / (max * max)); + } + + diff /= 9.0; + + if (ctx->blend > 0.0001) { + return av_clipd((diff - ctx->similarity) / ctx->blend, 0.0, 1.0) * max; + } else { + return (diff > ctx->similarity) ? max : 0; + } +} + static av_always_inline void get_pixel_uv(AVFrame *frame, int hsub_log2, int vsub_log2, int x, int y, uint8_t *u, uint8_t *v) { if (x < 0 || x >= frame->width || y < 0 || y >= frame->height) @@ -76,6 +103,18 @@ static av_always_inline void get_pixel_uv(AVFrame *frame, int hsub_log2, int vsu *v = frame->data[2][frame->linesize[2] * y + x]; } +static av_always_inline void get_pixel16_uv(AVFrame *frame, int hsub_log2, int vsub_log2, int x, int y, uint16_t *u, uint16_t *v) +{ + if (x < 0 || x >= frame->width || y < 0 || y >= frame->height) + return; + + x >>= hsub_log2; + y >>= vsub_log2; + + *u = AV_RN16(&frame->data[1][frame->linesize[1] * y + 2 * x]); + *v = AV_RN16(&frame->data[2][frame->linesize[2] * y + 2 * x]); +} + static int do_chromakey_slice(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs) { AVFrame *frame = arg; @@ -106,6 +145,40 @@ static int do_chromakey_slice(AVFilterContext *avctx, void *arg, int jobnr, int return 0; } +static int do_chromakey16_slice(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs) +{ + AVFrame *frame = arg; + + const int slice_start = (frame->height * jobnr) / nb_jobs; + const int slice_end = (frame->height * (jobnr + 1)) / nb_jobs; + + ChromakeyContext *ctx = avctx->priv; + + int x, y, xo, yo; + uint16_t u[9], v[9]; + + for (int i = 0; i < 9; i++) { + u[i] = ctx->chromakey_uv[0] << (ctx->depth - 8); + v[i] = ctx->chromakey_uv[1] << (ctx->depth - 8); + } + + for (y = slice_start; y < slice_end; ++y) { + for (x = 0; x < frame->width; ++x) { + uint16_t *dst = (uint16_t *)(frame->data[3] + frame->linesize[3] * y); + + for (yo = 0; yo < 3; ++yo) { + for (xo = 0; xo < 3; ++xo) { + get_pixel16_uv(frame, ctx->hsub_log2, ctx->vsub_log2, x + xo - 1, y + yo - 1, &u[yo * 3 + xo], &v[yo * 3 + xo]); + } + } + + dst[x] = do_chromakey_pixel16(ctx, u, v); + } + } + + return 0; +} + static int do_chromahold_slice(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs) { ChromakeyContext *ctx = avctx->priv; @@ -143,6 +216,46 @@ static int do_chromahold_slice(AVFilterContext *avctx, void *arg, int jobnr, int return 0; } +static int do_chromahold16_slice(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs) +{ + ChromakeyContext *ctx = avctx->priv; + AVFrame *frame = arg; + const int slice_start = ((frame->height >> ctx->vsub_log2) * jobnr) / nb_jobs; + const int slice_end = ((frame->height >> ctx->vsub_log2) * (jobnr + 1)) / nb_jobs; + const int factor = 1 << (ctx->depth - 8); + const int mid = ctx->mid; + double max = ctx->max; + + int x, y, alpha; + + for (y = slice_start; y < slice_end; ++y) { + for (x = 0; x < frame->width >> ctx->hsub_log2; ++x) { + int u = AV_RN16(&frame->data[1][frame->linesize[1] * y + 2 * x]); + int v = AV_RN16(&frame->data[2][frame->linesize[2] * y + 2 * x]); + double diff; + int du, dv; + + du = u - ctx->chromakey_uv[0] * factor; + dv = v - ctx->chromakey_uv[1] * factor; + + diff = sqrt((du * du + dv * dv) / (max * max)); + + alpha = diff > ctx->similarity; + if (ctx->blend > 0.0001) { + double f = 1. - av_clipd((diff - ctx->similarity) / ctx->blend, 0.0, 1.0); + + AV_WN16(&frame->data[1][frame->linesize[1] * y + 2 * x], mid + (u - mid) * f); + AV_WN16(&frame->data[2][frame->linesize[2] * y + 2 * x], mid + (v - mid) * f); + } else if (alpha) { + AV_WN16(&frame->data[1][frame->linesize[1] * y + 2 * x], mid); + AV_WN16(&frame->data[2][frame->linesize[2] * y + 2 * x], mid); + } + } + } + + return 0; +} + static int filter_frame(AVFilterLink *link, AVFrame *frame) { AVFilterContext *avctx = link->dst; @@ -159,10 +272,16 @@ static int filter_frame(AVFilterLink *link, AVFrame *frame) #define RGB_TO_U(rgb) (((- FIXNUM(0.16874) * rgb[0] - FIXNUM(0.33126) * rgb[1] + FIXNUM(0.50000) * rgb[2] + (1 << 9) - 1) >> 10) + 128) #define RGB_TO_V(rgb) ((( FIXNUM(0.50000) * rgb[0] - FIXNUM(0.41869) * rgb[1] - FIXNUM(0.08131) * rgb[2] + (1 << 9) - 1) >> 10) + 128) -static av_cold int initialize_chromakey(AVFilterContext *avctx) +static av_cold int config_output(AVFilterLink *outlink) { + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(outlink->format); + AVFilterContext *avctx = outlink->src; ChromakeyContext *ctx = avctx->priv; + ctx->depth = desc->comp[0].depth; + ctx->mid = 1 << (ctx->depth - 1); + ctx->max = (1 << ctx->depth) - 1; + if (ctx->is_yuv) { ctx->chromakey_uv[0] = ctx->chromakey_rgba[1]; ctx->chromakey_uv[1] = ctx->chromakey_rgba[2]; @@ -172,9 +291,9 @@ static av_cold int initialize_chromakey(AVFilterContext *avctx) } if (!strcmp(avctx->filter->name, "chromakey")) { - ctx->do_slice = do_chromakey_slice; + ctx->do_slice = ctx->depth <= 8 ? do_chromakey_slice : do_chromakey16_slice; } else { - ctx->do_slice = do_chromahold_slice; + ctx->do_slice = ctx->depth <= 8 ? do_chromahold_slice: do_chromahold16_slice ; } return 0; @@ -186,6 +305,10 @@ static av_cold int query_formats(AVFilterContext *avctx) AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, + 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_YUVA422P12, AV_PIX_FMT_YUVA444P12, + AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_NONE }; @@ -196,6 +319,15 @@ static av_cold int query_formats(AVFilterContext *avctx) AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, + 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_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12, + AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14, + 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_YUVA422P12, AV_PIX_FMT_YUVA444P12, + AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_NONE }; @@ -235,6 +367,7 @@ static const AVFilterPad chromakey_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, }, { NULL } }; @@ -257,7 +390,6 @@ AVFilter ff_vf_chromakey = { .description = NULL_IF_CONFIG_SMALL("Turns a certain color into transparency. Operates on YUV colors."), .priv_size = sizeof(ChromakeyContext), .priv_class = &chromakey_class, - .init = initialize_chromakey, .query_formats = query_formats, .inputs = chromakey_inputs, .outputs = chromakey_outputs, @@ -287,6 +419,7 @@ static const AVFilterPad chromahold_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, }, { NULL } }; @@ -298,7 +431,6 @@ AVFilter ff_vf_chromahold = { .description = NULL_IF_CONFIG_SMALL("Turns a certain color range into gray."), .priv_size = sizeof(ChromakeyContext), .priv_class = &chromahold_class, - .init = initialize_chromakey, .query_formats = query_formats, .inputs = chromahold_inputs, .outputs = chromahold_outputs,