[FFmpeg-cvslog] avfilter: add a blend_vulkan filter
Wu Jianhua
git at videolan.org
Wed Jan 5 16:17:56 EET 2022
ffmpeg | branch: master | Wu Jianhua <jianhua.wu at intel.com> | Sat Jan 1 02:09:53 2022 +0800| [9a194252c78c74c4455f837fd152b61904f5dc85] | committer: Lynne
avfilter: add a blend_vulkan filter
This commit adds a blend_vulkan filter and a normal blend mode, and
reserves support for introducing the blend modes in the future.
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=normal,\
pseudocolor=preset=turbo" -y normal_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=normal,hwdownload,\
format=yuv420p,pseudocolor=preset=turbo" -y normal_vulkan.jpg
Signed-off-by: Wu Jianhua <jianhua.wu at intel.com>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=9a194252c78c74c4455f837fd152b61904f5dc85
---
configure | 1 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_blend_vulkan.c | 499 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 502 insertions(+)
diff --git a/configure b/configure
index 8392c26015..f113f8f4ec 100755
--- a/configure
+++ b/configure
@@ -3616,6 +3616,7 @@ avgblur_opencl_filter_deps="opencl"
avgblur_vulkan_filter_deps="vulkan spirv_compiler"
azmq_filter_deps="libzmq"
blackframe_filter_deps="gpl"
+blend_vulkan_filter_deps="vulkan spirv_compiler"
bm3d_filter_deps="avcodec"
bm3d_filter_select="dct"
boxblur_filter_deps="gpl"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 01c0338bbb..1adbea75bd 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -192,6 +192,7 @@ OBJS-$(CONFIG_BITPLANENOISE_FILTER) += vf_bitplanenoise.o
OBJS-$(CONFIG_BLACKDETECT_FILTER) += vf_blackdetect.o
OBJS-$(CONFIG_BLACKFRAME_FILTER) += vf_blackframe.o
OBJS-$(CONFIG_BLEND_FILTER) += vf_blend.o framesync.o
+OBJS-$(CONFIG_BLEND_VULKAN_FILTER) += vf_blend_vulkan.o framesync.o vulkan.o vulkan_filter.o
OBJS-$(CONFIG_BM3D_FILTER) += vf_bm3d.o framesync.o
OBJS-$(CONFIG_BOXBLUR_FILTER) += vf_boxblur.o boxblur.o
OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index dac615d7df..4325a3e557 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -181,6 +181,7 @@ extern const AVFilter ff_vf_bitplanenoise;
extern const AVFilter ff_vf_blackdetect;
extern const AVFilter ff_vf_blackframe;
extern const AVFilter ff_vf_blend;
+extern const AVFilter ff_vf_blend_vulkan;
extern const AVFilter ff_vf_bm3d;
extern const AVFilter ff_vf_boxblur;
extern const AVFilter ff_vf_boxblur_opencl;
diff --git a/libavfilter/vf_blend_vulkan.c b/libavfilter/vf_blend_vulkan.c
new file mode 100644
index 0000000000..f3560332b5
--- /dev/null
+++ b/libavfilter/vf_blend_vulkan.c
@@ -0,0 +1,499 @@
+/*
+ * copyright (c) 2021 Wu Jianhua <jianhua.wu at intel.com>
+ * The blend modes are based on the blend.c.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "libavutil/random_seed.h"
+#include "libavutil/opt.h"
+#include "vulkan_filter.h"
+#include "internal.h"
+#include "framesync.h"
+#include "blend.h"
+
+#define CGS 32
+
+#define IN_TOP 0
+#define IN_BOTTOM 1
+
+typedef struct FilterParamsVulkan {
+ const char *blend;
+ const char *blend_func;
+ double opacity;
+ enum BlendMode mode;
+} FilterParamsVulkan;
+
+typedef struct BlendVulkanContext {
+ FFVulkanContext vkctx;
+ FFVkQueueFamilyCtx qf;
+ FFVkExecContext *exec;
+ FFVulkanPipeline *pl;
+ FFFrameSync fs;
+
+ VkDescriptorImageInfo top_images[3];
+ VkDescriptorImageInfo bottom_images[3];
+ VkDescriptorImageInfo output_images[3];
+
+ FilterParamsVulkan params[4];
+ double all_opacity;
+ enum BlendMode all_mode;
+
+ int initialized;
+} BlendVulkanContext;
+
+#define DEFINE_BLEND_MODE(MODE, EXPR) \
+static const char blend_##MODE[] = "blend_"#MODE; \
+static const char blend_##MODE##_func[] = { \
+ C(0, vec4 blend_##MODE(vec4 top, vec4 bottom, float opacity) { ) \
+ C(1, vec4 dst = EXPR; ) \
+ C(1, return dst; ) \
+ C(0, } ) \
+};
+
+#define A top
+#define B bottom
+
+DEFINE_BLEND_MODE(NORMAL, A * opacity + B * (1.0f - opacity))
+
+static inline void init_blend_func(FilterParamsVulkan *param)
+{
+#define CASE(MODE) case BLEND_##MODE: \
+ param->blend = blend_##MODE;\
+ param->blend_func = blend_##MODE##_func; \
+ break;
+
+ switch (param->mode) {
+ CASE(NORMAL)
+ default: param->blend = NULL; break;
+ }
+
+#undef CASE
+}
+
+static int config_params(AVFilterContext *avctx)
+{
+ BlendVulkanContext *s = avctx->priv;
+
+ for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
+ FilterParamsVulkan *param = &s->params[plane];
+
+ if (s->all_mode >= 0)
+ param->mode = s->all_mode;
+ if (s->all_opacity < 1)
+ param->opacity = s->all_opacity;
+
+ init_blend_func(param);
+ if (!param->blend) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Currently the blend mode specified is not supported yet.\n");
+ return AVERROR(EINVAL);
+ }
+ }
+
+ return 0;
+}
+
+static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
+ char *res, int res_len, int flags)
+{
+ int ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
+ if (ret < 0)
+ return ret;
+
+ return config_params(ctx);
+}
+
+static av_cold int init_filter(AVFilterContext *avctx)
+{
+ int err = 0;
+ FFVkSampler *sampler;
+ FFVkSPIRVShader *shd;
+ BlendVulkanContext *s = avctx->priv;
+ FFVulkanContext *vkctx = &s->vkctx;
+ const int planes = av_pix_fmt_count_planes(s->vkctx.output_format);
+
+ ff_vk_qf_init(vkctx, &s->qf, VK_QUEUE_COMPUTE_BIT, 0);
+
+ sampler = ff_vk_init_sampler(vkctx, 1, VK_FILTER_LINEAR);
+ if (!sampler)
+ return AVERROR_EXTERNAL;
+
+ s->pl = ff_vk_create_pipeline(vkctx, &s->qf);
+ if (!s->pl)
+ return AVERROR(ENOMEM);
+
+ {
+ FFVulkanDescriptorSetBinding image_descs[] = {
+ {
+ .name = "top_images",
+ .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+ .dimensions = 2,
+ .elems = planes,
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ .updater = s->top_images,
+ .sampler = sampler,
+ },
+ {
+ .name = "bottom_images",
+ .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+ .dimensions = 2,
+ .elems = planes,
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ .updater = s->bottom_images,
+ .sampler = sampler,
+ },
+ {
+ .name = "output_images",
+ .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+ .mem_layout = ff_vk_shader_rep_fmt(s->vkctx.output_format),
+ .mem_quali = "writeonly",
+ .dimensions = 2,
+ .elems = planes,
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ .updater = s->output_images,
+ },
+ };
+
+ shd = ff_vk_init_shader(s->pl, "blend_compute", image_descs[0].stages);
+ if (!shd)
+ return AVERROR(ENOMEM);
+
+ ff_vk_set_compute_shader_sizes(shd, (int [3]){ CGS, CGS, 1 });
+ RET(ff_vk_add_descriptor_set(vkctx, s->pl, shd, image_descs, FF_ARRAY_ELEMS(image_descs), 0));
+
+ for (int i = 0, j = 0; i < planes; i++) {
+ for (j = 0; j < i; j++)
+ if (s->params[i].blend_func == s->params[j].blend_func)
+ break;
+ /* note: the bracket is needed, for GLSLD is a macro with multiple statements. */
+ if (j == i) {
+ GLSLD(s->params[i].blend_func);
+ }
+ }
+
+ GLSLC(0, void main() );
+ GLSLC(0, { );
+ GLSLC(1, ivec2 size; );
+ GLSLC(1, const ivec2 pos = ivec2(gl_GlobalInvocationID.xy); );
+ for (int i = 0; i < planes; i++) {
+ GLSLC(0, );
+ GLSLF(1, size = imageSize(output_images[%i]); ,i);
+ GLSLC(1, if (IS_WITHIN(pos, size)) { );
+ GLSLF(2, const vec4 top = texture(top_images[%i], pos); ,i);
+ GLSLF(2, const vec4 bottom = texture(bottom_images[%i], pos); ,i);
+ GLSLF(2, const float opacity = %f; ,s->params[i].opacity);
+ GLSLF(2, vec4 dst = %s(top, bottom, opacity); ,s->params[i].blend);
+ GLSLC(0, );
+ GLSLF(2, imageStore(output_images[%i], pos, dst); ,i);
+ GLSLC(1, } );
+ }
+ GLSLC(0, } );
+
+ RET(ff_vk_compile_shader(vkctx, shd, "main"));
+ RET(ff_vk_init_pipeline_layout(vkctx, s->pl));
+ RET(ff_vk_init_compute_pipeline(vkctx, s->pl));
+ }
+
+ RET(ff_vk_create_exec_ctx(vkctx, &s->exec, &s->qf));
+
+ s->initialized = 1;
+
+fail:
+ return err;
+}
+
+static int process_frames(AVFilterContext *avctx, AVFrame *out_frame, AVFrame *top_frame, AVFrame *bottom_frame)
+{
+ int err = 0;
+ VkCommandBuffer cmd_buf;
+ BlendVulkanContext *s = avctx->priv;
+ FFVulkanContext *vkctx = &s->vkctx;
+ FFVulkanFunctions *vk = &s->vkctx.vkfn;
+ const int planes = av_pix_fmt_count_planes(s->vkctx.output_format);
+
+ AVVkFrame *out = (AVVkFrame *)out_frame->data[0];
+ AVVkFrame *top = (AVVkFrame *)top_frame->data[0];
+ AVVkFrame *bottom = (AVVkFrame *)bottom_frame->data[0];
+
+ AVHWFramesContext *top_fc = (AVHWFramesContext*)top_frame->hw_frames_ctx->data;
+ AVHWFramesContext *bottom_fc = (AVHWFramesContext*)bottom_frame->hw_frames_ctx->data;
+
+ const VkFormat *top_formats = av_vkfmt_from_pixfmt(top_fc->sw_format);
+ const VkFormat *bottom_formats = av_vkfmt_from_pixfmt(bottom_fc->sw_format);
+ const VkFormat *output_formats = av_vkfmt_from_pixfmt(s->vkctx.output_format);
+
+ ff_vk_start_exec_recording(vkctx, s->exec);
+ cmd_buf = ff_vk_get_exec_buf(s->exec);
+
+ for (int i = 0; i < planes; i++) {
+ RET(ff_vk_create_imageview(vkctx, s->exec,
+ &s->top_images[i].imageView, top->img[i],
+ top_formats[i],
+ ff_comp_identity_map));
+
+ RET(ff_vk_create_imageview(vkctx, s->exec,
+ &s->bottom_images[i].imageView, bottom->img[i],
+ bottom_formats[i],
+ ff_comp_identity_map));
+
+ RET(ff_vk_create_imageview(vkctx, s->exec,
+ &s->output_images[i].imageView, out->img[i],
+ output_formats[i],
+ ff_comp_identity_map));
+
+ s->top_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+ s->bottom_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+ s->output_images[i].imageLayout = VK_IMAGE_LAYOUT_GENERAL;
+ }
+
+ ff_vk_update_descriptor_set(vkctx, s->pl, 0);
+
+ for (int i = 0; i < planes; i++) {
+ VkImageMemoryBarrier barriers[] = {
+ {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .srcAccessMask = 0,
+ .dstAccessMask = VK_ACCESS_SHADER_READ_BIT,
+ .oldLayout = top->layout[i],
+ .newLayout = s->top_images[i].imageLayout,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .image = top->img[i],
+ .subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+ .subresourceRange.levelCount = 1,
+ .subresourceRange.layerCount = 1,
+ },
+ {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .srcAccessMask = 0,
+ .dstAccessMask = VK_ACCESS_SHADER_READ_BIT,
+ .oldLayout = bottom->layout[i],
+ .newLayout = s->bottom_images[i].imageLayout,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .image = bottom->img[i],
+ .subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+ .subresourceRange.levelCount = 1,
+ .subresourceRange.layerCount = 1,
+ },
+ {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .srcAccessMask = 0,
+ .dstAccessMask = VK_ACCESS_SHADER_WRITE_BIT,
+ .oldLayout = out->layout[i],
+ .newLayout = s->output_images[i].imageLayout,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .image = out->img[i],
+ .subresourceRange.aspectMask = VK_IMAGE_ASPECT_COLOR_BIT,
+ .subresourceRange.levelCount = 1,
+ .subresourceRange.layerCount = 1,
+ },
+ };
+
+ vk->CmdPipelineBarrier(cmd_buf, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+ VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0,
+ 0, NULL, 0, NULL, FF_ARRAY_ELEMS(barriers), barriers);
+
+ top->layout[i] = barriers[0].newLayout;
+ top->access[i] = barriers[0].dstAccessMask;
+
+ bottom->layout[i] = barriers[1].newLayout;
+ bottom->access[i] = barriers[1].dstAccessMask;
+
+ out->layout[i] = barriers[2].newLayout;
+ out->access[i] = barriers[2].dstAccessMask;
+ }
+
+ ff_vk_bind_pipeline_exec(vkctx, s->exec, s->pl);
+ vk->CmdDispatch(cmd_buf, FFALIGN(s->vkctx.output_width, CGS) / CGS,
+ FFALIGN(s->vkctx.output_height, CGS) / CGS, 1);
+
+ ff_vk_add_exec_dep(vkctx, s->exec, top_frame, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT);
+ ff_vk_add_exec_dep(vkctx, s->exec, bottom_frame, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT);
+ ff_vk_add_exec_dep(vkctx, s->exec, out_frame, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT);
+
+ err = ff_vk_submit_exec_queue(vkctx, s->exec);
+ if (err)
+ return err;
+
+ ff_vk_qf_rotate(&s->qf);
+
+ return 0;
+
+fail:
+ ff_vk_discard_exec_deps(s->exec);
+ return err;
+}
+
+static int blend_frame(FFFrameSync *fs)
+{
+ int err;
+ AVFilterContext *avctx = fs->parent;
+ BlendVulkanContext *s = avctx->priv;
+ AVFilterLink *outlink = avctx->outputs[0];
+ AVFrame *top, *bottom, *out;
+
+ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!out) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ RET(ff_framesync_get_frame(fs, IN_TOP, &top, 0));
+ RET(ff_framesync_get_frame(fs, IN_BOTTOM, &bottom, 0));
+
+ RET(av_frame_copy_props(out, top));
+
+ if (!s->initialized) {
+ AVHWFramesContext *top_fc = (AVHWFramesContext*)top->hw_frames_ctx->data;
+ AVHWFramesContext *bottom_fc = (AVHWFramesContext*)bottom->hw_frames_ctx->data;
+ if (top_fc->sw_format != bottom_fc->sw_format) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Currently the sw format of the bottom video need to match the top!\n");
+ return AVERROR(EINVAL);
+ }
+ RET(init_filter(avctx));
+ }
+
+ RET(process_frames(avctx, out, top, bottom));
+
+ return ff_filter_frame(outlink, out);
+
+fail:
+ av_frame_free(&out);
+ return err;
+}
+
+static av_cold int init(AVFilterContext *avctx)
+{
+ BlendVulkanContext *s = avctx->priv;
+
+ s->fs.on_event = blend_frame;
+
+ return ff_vk_filter_init(avctx);
+}
+
+static av_cold void uninit(AVFilterContext *avctx)
+{
+ BlendVulkanContext *s = avctx->priv;
+
+ ff_framesync_uninit(&s->fs);
+
+ ff_vk_uninit(&s->vkctx);
+
+ s->initialized = 0;
+}
+
+static int config_props_output(AVFilterLink *outlink)
+{
+ int err;
+ AVFilterContext *avctx = outlink->src;
+ BlendVulkanContext *s = avctx->priv;
+ AVFilterLink *toplink = avctx->inputs[IN_TOP];
+ AVFilterLink *bottomlink = avctx->inputs[IN_BOTTOM];
+
+ if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
+ av_log(avctx, AV_LOG_ERROR, "First input link %s parameters "
+ "(size %dx%d) do not match the corresponding "
+ "second input link %s parameters (size %dx%d)\n",
+ avctx->input_pads[IN_TOP].name, toplink->w, toplink->h,
+ avctx->input_pads[IN_BOTTOM].name, bottomlink->w, bottomlink->h);
+ return AVERROR(EINVAL);
+ }
+
+ outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
+ outlink->frame_rate = toplink->frame_rate;
+
+ RET(ff_vk_filter_config_output(outlink));
+
+ RET(ff_framesync_init_dualinput(&s->fs, avctx));
+
+ RET(ff_framesync_configure(&s->fs));
+ outlink->time_base = s->fs.time_base;
+
+ RET(config_params(avctx));
+
+fail:
+ return err;
+}
+
+static int activate(AVFilterContext *avctx)
+{
+ BlendVulkanContext *s = avctx->priv;
+ return ff_framesync_activate(&s->fs);
+}
+
+#define OFFSET(x) offsetof(BlendVulkanContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+
+static const AVOption blend_vulkan_options[] = {
+ { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, "mode" },
+ { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, "mode" },
+ { "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" },
+
+ { "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 },
+ { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
+ { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
+ { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
+
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(blend_vulkan);
+
+static const AVFilterPad blend_vulkan_inputs[] = {
+ {
+ .name = "top",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_vk_filter_config_input,
+ },
+ {
+ .name = "bottom",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_vk_filter_config_input,
+ },
+};
+
+
+static const AVFilterPad blend_vulkan_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &config_props_output,
+ }
+};
+
+const AVFilter ff_vf_blend_vulkan = {
+ .name = "blend_vulkan",
+ .description = NULL_IF_CONFIG_SMALL("Blend two video frames in Vulkan"),
+ .priv_size = sizeof(BlendVulkanContext),
+ .init = &init,
+ .uninit = &uninit,
+ .activate = &activate,
+ FILTER_INPUTS(blend_vulkan_inputs),
+ FILTER_OUTPUTS(blend_vulkan_outputs),
+ FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
+ .priv_class = &blend_vulkan_class,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+ .process_command = &process_command,
+};
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