From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTP id D560E46491 for ; Sun, 18 Jun 2023 11:23:00 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id EE1D568C21C; Sun, 18 Jun 2023 14:20:31 +0300 (EEST) Received: from haasn.dev (haasn.dev [78.46.187.166]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 66F4168C074 for ; Sun, 18 Jun 2023 14:20:14 +0300 (EEST) Received: from haasn.dev (unknown [10.30.0.2]) by haasn.dev (Postfix) with ESMTP id 12C714AA92; Sun, 18 Jun 2023 13:20:11 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=haasn.xyz; s=mail; t=1687087211; bh=33DNQBemQg1KKt8P0pMqmJaFW8LFF5yAOgzJOlkkCGc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RgU+wg4FJ9kicJQB5PElE49FuX8DKuN50QyakL5cUwepdbzQDP9fclYEUJiQIBN0q JbdOJGsHbNHwx9x86d6ay2J3y6pL2r0wQd0SYpb9150BKNiwuQvLuof0yvSOtpHBFz ItwetUoF5iKkP/M1GC+j2c44GnNx9Dn1lIUGb63U= From: Niklas Haas To: ffmpeg-devel@ffmpeg.org Date: Sun, 18 Jun 2023 13:17:03 +0200 Message-ID: <20230618111955.40994-13-ffmpeg@haasn.xyz> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230618111955.40994-2-ffmpeg@haasn.xyz> References: <20230618111955.40994-2-ffmpeg@haasn.xyz> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v2 11/22] lavfi/vf_libplacebo: support blending multiple inputs X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 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 Cc: Niklas Haas Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Archived-At: List-Archive: List-Post: From: Niklas Haas Subsequent inputs require frame blending to be enabled, in order to not overwrite the existing frame contents. For output metadata, we implicitly copy the metadata of the *first* available stream (falling back to the second stream if the first has already reached EOF, and so on). This is done to resolve any conflicts between inputs with differing metadata. So when e.g. input 1 is HDR and output 2 is SDR, the output will be HDR, and vice versa. This logic could probablly be improved by dynamically determining some "superior" set of metadata, but I don't want to handle that complexity in this series. --- libavfilter/vf_libplacebo.c | 24 ++++++++++++++++++++---- 1 file changed, 20 insertions(+), 4 deletions(-) diff --git a/libavfilter/vf_libplacebo.c b/libavfilter/vf_libplacebo.c index 5b45d4f8fb5..5ea6fcd7920 100644 --- a/libavfilter/vf_libplacebo.c +++ b/libavfilter/vf_libplacebo.c @@ -786,12 +786,18 @@ static int output_frame(AVFilterContext *ctx, int64_t pts) { int err = 0, ok, changed_csp; LibplaceboContext *s = ctx->priv; - LibplaceboInput *in = &s->inputs[0]; AVFilterLink *outlink = ctx->outputs[0]; const AVPixFmtDescriptor *outdesc = av_pix_fmt_desc_get(outlink->format); - const AVFrame *ref = ref_frame(&in->mix); struct pl_frame target; + const AVFrame *ref = NULL; AVFrame *out; + + /* Use the first active input as metadata reference */ + for (int i = 0; i < s->nb_inputs; i++) { + const LibplaceboInput *in = &s->inputs[i]; + if (in->qstatus == PL_QUEUE_OK && (ref = ref_frame(&in->mix))) + break; + } if (!ref) return 0; @@ -862,8 +868,18 @@ static int output_frame(AVFilterContext *ctx, int64_t pts) goto fail; } - update_crops(ctx, in, &target, out->pts * av_q2d(outlink->time_base)); - pl_render_image_mix(in->renderer, &in->mix, &target, &s->params); + /* Draw first frame opaque, others with blending */ + s->params.skip_target_clearing = false; + s->params.blend_params = NULL; + for (int i = 0; i < s->nb_inputs; i++) { + LibplaceboInput *in = &s->inputs[i]; + if (in->qstatus != PL_QUEUE_OK) + continue; + update_crops(ctx, in, &target, out->pts * av_q2d(outlink->time_base)); + pl_render_image_mix(in->renderer, &in->mix, &target, &s->params); + s->params.skip_target_clearing = true; + s->params.blend_params = &pl_alpha_overlay; + } if (outdesc->flags & AV_PIX_FMT_FLAG_HWACCEL) { pl_unmap_avframe(s->gpu, &target); -- 2.41.0 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-request@ffmpeg.org with subject "unsubscribe".