From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from ffbox0-bg.ffmpeg.org (ffbox0-bg.ffmpeg.org [79.124.17.100]) by master.gitmailbox.com (Postfix) with ESMTPS id 199264BB55 for ; Wed, 23 Jul 2025 13:59:53 +0000 (UTC) Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 2508468D9BB; Wed, 23 Jul 2025 16:57:12 +0300 (EEST) Received: from haasn.dev (haasn.dev [78.46.187.166]) by ffbox0-bg.ffmpeg.org (Postfix) with ESMTP id 7BE2368D8BC for ; Wed, 23 Jul 2025 16:56:33 +0300 (EEST) Received: from haasn.dev (unknown [10.30.1.1]) by haasn.dev (Postfix) with UTF8SMTP id CCF1D498C5; Wed, 23 Jul 2025 15:56:29 +0200 (CEST) From: Niklas Haas To: ffmpeg-devel@ffmpeg.org Date: Wed, 23 Jul 2025 15:47:21 +0200 Message-ID: <20250723135626.1390296-19-ffmpeg@haasn.xyz> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250723135626.1390296-1-ffmpeg@haasn.xyz> References: <20250723135626.1390296-1-ffmpeg@haasn.xyz> MIME-Version: 1.0 Subject: [FFmpeg-devel] [PATCH v2 18/18] avfilter/vf_libplacebo: add an alpha_mode setting 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 Chooses the desired output alpha mode. Note that this depends on an upstream version of libplacebo new enough to respect the corresponding AVFrame field in pl_map_avframe_ex. --- doc/filters.texi | 4 ++++ libavfilter/vf_libplacebo.c | 13 +++++++++++++ 2 files changed, 17 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index 13ca065f85..d4566cb594 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -16380,6 +16380,10 @@ leading to no change. For any other value, conversion will be performed. See the @ref{setparams} filter for a list of possible values. +@item alpha_mode +Choose the desired output alpha mode, when the output format has an alpha +channel. See the @ref{setparams} filter for a list of possible values. + @item apply_filmgrain Apply film grain (e.g. AV1 or H.274) if present in source frames, and strip it from the output. Enabled by default. diff --git a/libavfilter/vf_libplacebo.c b/libavfilter/vf_libplacebo.c index 475030c80d..bb73350da5 100644 --- a/libavfilter/vf_libplacebo.c +++ b/libavfilter/vf_libplacebo.c @@ -195,6 +195,7 @@ typedef struct LibplaceboContext { int color_primaries; int color_trc; int rotation; + int alpha_mode; AVDictionary *extra_opts; #if PL_API_VER >= 351 @@ -920,6 +921,11 @@ static int output_frame(AVFilterContext *ctx, int64_t pts) if (s->color_primaries >= 0) out->color_primaries = s->color_primaries; + if (outdesc->flags & AV_PIX_FMT_FLAG_ALPHA) { + if (s->alpha_mode >= 0) + out->alpha_mode = s->alpha_mode; + } + /* Strip side data if no longer relevant */ if (out->width != ref->width || out->height != ref->height) changed |= AV_SIDE_DATA_PROP_SIZE_DEPENDENT; @@ -1475,6 +1481,13 @@ static const AVOption libplacebo_options[] = { {"270", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PL_ROTATION_270}, .flags = STATIC, .unit = "rotation"}, {"360", NULL, 0, AV_OPT_TYPE_CONST, {.i64=PL_ROTATION_360}, .flags = STATIC, .unit = "rotation"}, + {"alpha_mode", "select alpha moda", OFFSET(alpha_mode), AV_OPT_TYPE_INT, {.i64=-1}, -1, AVALPHA_MODE_NB-1, DYNAMIC, .unit = "alpha_mode"}, + {"auto", "keep the same alpha mode", 0, AV_OPT_TYPE_CONST, {.i64=-1}, 0, 0, DYNAMIC, .unit = "alpha_mode"}, + {"unspecified", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVALPHA_MODE_UNSPECIFIED}, 0, 0, DYNAMIC, .unit = "alpha_mode"}, + {"unknown", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVALPHA_MODE_UNSPECIFIED}, 0, 0, DYNAMIC, .unit = "alpha_mode"}, + {"premultiplied", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVALPHA_MODE_PREMULTIPLIED}, 0, 0, DYNAMIC, .unit = "alpha_mode"}, + {"straight", NULL, 0, AV_OPT_TYPE_CONST, {.i64=AVALPHA_MODE_STRAIGHT}, 0, 0, DYNAMIC, .unit = "alpha_mode"}, + { "upscaler", "Upscaler function", OFFSET(upscaler), AV_OPT_TYPE_STRING, {.str = "spline36"}, .flags = DYNAMIC }, { "downscaler", "Downscaler function", OFFSET(downscaler), AV_OPT_TYPE_STRING, {.str = "mitchell"}, .flags = DYNAMIC }, { "frame_mixer", "Frame mixing function", OFFSET(frame_mixer), AV_OPT_TYPE_STRING, {.str = "none"}, .flags = DYNAMIC }, -- 2.50.1 _______________________________________________ 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".