From 284baef71b619d4d07d9a837e0a5196e860f5e1c Mon Sep 17 00:00:00 2001 From: Wu Jianhua Date: Wed, 23 Feb 2022 19:25:38 +0800 Subject: [PATCH 04/10] avfilter/vf_blend_vulkan: add negation blend mode Use the commands below to test: (href: https://trac.ffmpeg.org/wiki/Blend) I. make an image for test ffmpeg -f lavfi -i color=s=256x256,geq=r='H-1-Y':g='H-1-Y':b='H-1-Y' -frames 1 \ -y -pix_fmt yuv420p test.jpg II. blend in sw ffmpeg -i test.jpg -vf "split[a][b];[b]transpose[b];[a][b]blend=all_mode=negation,\ pseudocolor=preset=turbo" -y negation_sw.jpg III. blend in vulkan ffmpeg -init_hw_device vulkan -i test.jpg -vf "split[a][b];[b]transpose[b];\ [a]hwupload[a];[b]hwupload[b];[a][b]blend_vulkan=all_mode=negation,hwdownload,\ format=yuv420p,pseudocolor=preset=turbo" -y negation_vulkan.jpg Signed-off-by: Wu Jianhua --- libavfilter/vf_blend_vulkan.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavfilter/vf_blend_vulkan.c b/libavfilter/vf_blend_vulkan.c index 670df47499..4d409b138b 100644 --- a/libavfilter/vf_blend_vulkan.c +++ b/libavfilter/vf_blend_vulkan.c @@ -86,6 +86,7 @@ DEFINE_BLEND_MODE(ADDITION, FN(min(MAX, A + B))) DEFINE_BLEND_MODE(AVERAGE, FN((A + B) * HALF)) DEFINE_BLEND_MODE(SUBTRACT, FN(max(MIN, A - B))) DEFINE_BLEND_MODE(MULTIPLY, FN(1.0f * A * B / 1.0f)) +DEFINE_BLEND_MODE(NEGATION, FN(MAX - abs(MAX - A - B))) static inline void init_blend_func(FilterParamsVulkan *param) { @@ -100,6 +101,7 @@ static inline void init_blend_func(FilterParamsVulkan *param) CASE(SUBTRACT) CASE(NORMAL) CASE(MULTIPLY) + CASE(NEGATION) default: param->blend = NULL; break; } @@ -474,6 +476,7 @@ static const AVOption blend_vulkan_options[] = { { "subtract", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_SUBTRACT }, 0, 0, FLAGS, "mode" }, { "normal", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_NORMAL }, 0, 0, FLAGS, "mode" }, { "multiply", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_MULTIPLY }, 0, 0, FLAGS, "mode" }, + { "negation", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_NEGATION }, 0, 0, FLAGS, "mode" }, { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS }, { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS }, -- 2.25.1