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avfilter/vf_blend_vulkan: add multiply blend mode

Browse Source 
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=multiply,\
pseudocolor=preset=turbo" -y multiply_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=multiply,hwdownload,\
format=yuv420p,pseudocolor=preset=turbo" -y multiply_vulkan.jpg

Signed-off-by: Wu Jianhua <jianhua.wu@intel.com>
This commit is contained in:
Wu Jianhua 2022-01-12 12:41:33 +08:00 committed by Lynne
parent 0aa7142442
commit 8f470133f6
1 changed files with 7 additions and 2 deletions
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9
libavfilter/vf_blend_vulkan.c
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@ -1,5 +1,5 @@
/*
* copyright (c) 2021 Wu Jianhua <jianhua.wu@intel.com>
* copyright (c) 2021-2022 Wu Jianhua <jianhua.wu@intel.com>
* The blend modes are based on the blend.c.
*
* This file is part of FFmpeg.
@ -68,7 +68,10 @@ static const char blend_##MODE##_func[] = { \
#define A top
#define B bottom
#define FN(EXPR) A + ((EXPR) - A) * opacity
DEFINE_BLEND_MODE(NORMAL, A * opacity + B * (1.0f - opacity))
DEFINE_BLEND_MODE(MULTIPLY, FN(1.0f * A * B / 1.0f))
static inline void init_blend_func(FilterParamsVulkan *param)
{
@ -79,6 +82,7 @@ static inline void init_blend_func(FilterParamsVulkan *param)
switch (param->mode) {
CASE(NORMAL)
CASE(MULTIPLY)
default: param->blend = NULL; break;
}
@ -448,7 +452,8 @@ static const AVOption blend_vulkan_options[] = {
{ "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, "mode" },
{ "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, "mode" },
{ "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, BLEND_NB - 1, FLAGS, "mode" },
{ "normal", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_NORMAL }, 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" },
{ "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 },