From: Niklas Haas <g...@haasn.dev>
Carbon copy of vf_scdet.
Signed-off-by: Niklas Haas <g...@haasn.dev>
Sponsored-by: nxtedition
---
configure | 1 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_scdet_vulkan.c | 412 ++++++++++++++++++++++++++++++++++
4 files changed, 415 insertions(+)
create mode 100644 libavfilter/vf_scdet_vulkan.c
diff --git a/configure b/configure
index 9556d7c86f..e42ebbad06 100755
--- a/configure
+++ b/configure
@@ -3986,6 +3986,7 @@ vpp_amf_filter_deps="amf"
scale_qsv_filter_deps="libmfx"
scale_qsv_filter_select="qsvvpp"
scdet_filter_select="scene_sad"
+scdet_vulkan_filter_deps="vulkan spirv_compiler"
select_filter_select="scene_sad"
sharpness_vaapi_filter_deps="vaapi"
showcqt_filter_deps="avformat swscale"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 76a4f53932..79113b3948 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -473,6 +473,7 @@ OBJS-$(CONFIG_SCALE_VULKAN_FILTER) +=
vf_scale_vulkan.o vulkan.o vulka
OBJS-$(CONFIG_SCALE2REF_FILTER) += vf_scale.o scale_eval.o
framesync.o
OBJS-$(CONFIG_SCALE2REF_NPP_FILTER) += vf_scale_npp.o scale_eval.o
OBJS-$(CONFIG_SCDET_FILTER) += vf_scdet.o
+OBJS-$(CONFIG_SCDET_VULKAN_FILTER) += vf_scdet_vulkan.o
OBJS-$(CONFIG_SCHARR_FILTER) += vf_convolution.o
OBJS-$(CONFIG_SCROLL_FILTER) += vf_scroll.o
OBJS-$(CONFIG_SEGMENT_FILTER) += f_segment.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 88204e070c..ffa8397c62 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -445,6 +445,7 @@ extern const FFFilter ff_vf_scale_vulkan;
extern const FFFilter ff_vf_scale2ref;
extern const FFFilter ff_vf_scale2ref_npp;
extern const FFFilter ff_vf_scdet;
+extern const FFFilter ff_vf_scdet_vulkan;
extern const FFFilter ff_vf_scharr;
extern const FFFilter ff_vf_scroll;
extern const FFFilter ff_vf_segment;
diff --git a/libavfilter/vf_scdet_vulkan.c b/libavfilter/vf_scdet_vulkan.c
new file mode 100644
index 0000000000..fadc0842ae
--- /dev/null
+++ b/libavfilter/vf_scdet_vulkan.c
@@ -0,0 +1,412 @@
+/*
+ * Copyright 2025 (c) Niklas Haas
+ *
+ * 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/avassert.h"
+#include "libavutil/vulkan_spirv.h"
+#include "libavutil/opt.h"
+#include "libavutil/timestamp.h"
+#include "vulkan_filter.h"
+
+#include "filters.h"
+
+typedef struct SceneDetectVulkanContext {
+ FFVulkanContext vkctx;
+
+ int initialized;
+ FFVkExecPool e;
+ AVVulkanDeviceQueueFamily *qf;
+ FFVulkanShader shd;
+ AVBufferPool *det_buf_pool;
+
+ double threshold;
+ int sc_pass;
+
+ int nb_planes;
+ double prev_mafd;
+ AVFrame *prev;
+ AVFrame *cur;
+} SceneDetectVulkanContext;
+
+typedef struct SceneDetectBuf {
+#define SLICES 16
+ uint32_t frame_sad[SLICES];
+} SceneDetectBuf;
+
+static av_cold int init_filter(AVFilterContext *ctx)
+{
+ int err;
+ uint8_t *spv_data;
+ size_t spv_len;
+ void *spv_opaque = NULL;
+ SceneDetectVulkanContext *s = ctx->priv;
+ FFVulkanContext *vkctx = &s->vkctx;
+ FFVulkanShader *shd;
+ FFVkSPIRVCompiler *spv;
+ FFVulkanDescriptorSetBinding *desc;
+
+ const AVPixFmtDescriptor *pixdesc =
av_pix_fmt_desc_get(s->vkctx.input_format);
+ const int lumaonly = !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB) &&
+ (pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR);
+ s->nb_planes = lumaonly ? 1 :
av_pix_fmt_count_planes(s->vkctx.input_format);
+
+ spv = ff_vk_spirv_init();
+ if (!spv) {
+ av_log(ctx, AV_LOG_ERROR, "Unable to initialize SPIR-V compiler!\n");
+ return AVERROR_EXTERNAL;
+ }
+
+ s->qf = ff_vk_qf_find(vkctx, VK_QUEUE_COMPUTE_BIT, 0);
+ if (!s->qf) {
+ av_log(ctx, AV_LOG_ERROR, "Device has no compute queues\n");
+ err = AVERROR(ENOTSUP);
+ goto fail;
+ }
+
+ RET(ff_vk_exec_pool_init(vkctx, s->qf, &s->e, s->qf->num*4, 0, 0, 0,
NULL));
+ RET(ff_vk_shader_init(vkctx, &s->shd, "scdet",
+ VK_SHADER_STAGE_COMPUTE_BIT,
+ (const char *[]) {
"GL_KHR_shader_subgroup_arithmetic" }, 1,
+ 32, 32, 1,
+ 0));
+ shd = &s->shd;
+
+ desc = (FFVulkanDescriptorSetBinding []) {
+ {
+ .name = "prev_img",
+ .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+ .mem_layout = ff_vk_shader_rep_fmt(s->vkctx.input_format,
FF_VK_REP_UINT),
+ .mem_quali = "readonly",
+ .dimensions = 2,
+ .elems = av_pix_fmt_count_planes(s->vkctx.input_format),
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ }, {
+ .name = "cur_img",
+ .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
+ .mem_layout = ff_vk_shader_rep_fmt(s->vkctx.input_format,
FF_VK_REP_UINT),
+ .mem_quali = "readonly",
+ .dimensions = 2,
+ .elems = av_pix_fmt_count_planes(s->vkctx.input_format),
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ }, {
+ .name = "sad_buffer",
+ .type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER,
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ .buf_content = "uint frame_sad[];",
+ }
+ };
+
+ RET(ff_vk_shader_add_descriptor_set(vkctx, &s->shd, desc, 3, 0, 0));
+
+ GLSLC(0, shared uint wg_sum;
);
+ GLSLC(0, void main()
);
+ GLSLC(0, {
);
+ GLSLF(1, const uint slice = gl_WorkGroupID.x %% %u;
,SLICES);
+ GLSLC(1, const ivec2 pos = ivec2(gl_GlobalInvocationID.xy);
);
+ GLSLC(1, wg_sum = 0;
);
+ GLSLC(1, barrier();
);
+ for (int i = 0; i < s->nb_planes; i++) {
+ GLSLF(1, if (IS_WITHIN(pos, imageSize(cur_img[%d]))) {
,i);
+ GLSLF(2, uvec4 prev = imageLoad(prev_img[%d], pos);
,i);
+ GLSLF(2, uvec4 cur = imageLoad(cur_img[%d], pos);
,i);
+ GLSLC(2, uvec4 sad = abs(ivec4(cur) - ivec4(prev));
);
+ GLSLC(2, uint sum = subgroupAdd(sad.x + sad.y + sad.z);
);
+ GLSLC(2, if (subgroupElect())
);
+ GLSLC(3, atomicAdd(wg_sum, sum);
);
+ GLSLC(1, }
);
+ }
+ GLSLC(1, barrier();
);
+ GLSLC(1, if (gl_LocalInvocationIndex == 0)
);
+ GLSLC(2, atomicAdd(frame_sad[slice], wg_sum);
);
+ GLSLC(0, }
);
+
+ RET(spv->compile_shader(vkctx, spv, &s->shd, &spv_data, &spv_len, "main",
+ &spv_opaque));
+ RET(ff_vk_shader_link(vkctx, &s->shd, spv_data, spv_len, "main"));
+
+ RET(ff_vk_shader_register_exec(vkctx, &s->e, &s->shd));
+
+ s->initialized = 1;
+
+fail:
+ if (spv_opaque)
+ spv->free_shader(spv, &spv_opaque);
+ if (spv)
+ spv->uninit(&spv);
+
+ return err;
+}
+
+static double evaluate(AVFilterContext *ctx, const SceneDetectBuf *buf)
+{
+ SceneDetectVulkanContext *s = ctx->priv;
+ const AVPixFmtDescriptor *desc =
av_pix_fmt_desc_get(s->vkctx.input_format);
+ const AVFilterLink *inlink = ctx->inputs[0];
+ uint64_t count;
+ double mafd, diff;
+
+ uint64_t sad = 0;
+ for (int i = 0; i < SLICES; i++)
+ sad += buf->frame_sad[i];
+
+ av_assert2(s->nb_planes == 1 || !(desc->log2_chroma_w ||
desc->log2_chroma_h));
+ count = s->nb_planes * inlink->w * inlink->h;
+ mafd = (double) sad * 100.0 / count / (1ULL << desc->comp[0].depth);
+ diff = fabs(mafd - s->prev_mafd);
+ s->prev_mafd = mafd;
+
+ return av_clipf(FFMIN(mafd, diff), 0.0, 100.0);
+}
+
+static int scdet_vulkan_filter_frame(AVFilterLink *link, AVFrame *in)
+{
+ int err;
+ AVFilterContext *ctx = link->dst;
+ SceneDetectVulkanContext *s = ctx->priv;
+ AVFilterLink *outlink = ctx->outputs[0];
+
+ VkImageView prev_views[AV_NUM_DATA_POINTERS];
+ VkImageView cur_views[AV_NUM_DATA_POINTERS];
+ VkImageMemoryBarrier2 img_bar[8];
+ int nb_img_bar = 0;
+
+ FFVulkanContext *vkctx = &s->vkctx;
+ FFVulkanFunctions *vk = &vkctx->vkfn;
+ FFVkExecContext *exec = NULL;
+ AVBufferRef *buf = NULL;
+ FFVkBuffer *buf_vk;
+
+ SceneDetectBuf *sad;
+ double score = 0.0;
+ char str[64];
+
+ if (!s->initialized)
+ RET(init_filter(ctx));
+
+ av_frame_free(&s->prev);
+ s->prev = s->cur;
+ s->cur = av_frame_clone(in);
+ if (!s->prev)
+ goto done;
+
+ RET(ff_vk_get_pooled_buffer(vkctx, &s->det_buf_pool, &buf,
+ VK_BUFFER_USAGE_TRANSFER_DST_BIT |
+ VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
+ NULL,
+ sizeof(SceneDetectBuf),
+ VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT |
+ VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
+ VK_MEMORY_PROPERTY_HOST_COHERENT_BIT));
+ buf_vk = (FFVkBuffer *)buf->data;
+ sad = (SceneDetectBuf *) buf_vk->mapped_mem;
+
+ exec = ff_vk_exec_get(vkctx, &s->e);
+ ff_vk_exec_start(vkctx, exec);
+
+ RET(ff_vk_exec_add_dep_frame(vkctx, exec, s->prev,
+ VK_PIPELINE_STAGE_2_NONE,
+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT));
+ RET(ff_vk_create_imageviews(vkctx, exec, prev_views, s->prev,
FF_VK_REP_UINT));
+
+ ff_vk_shader_update_img_array(vkctx, exec, &s->shd, s->prev, prev_views,
0, 0,
+ VK_IMAGE_LAYOUT_GENERAL, VK_NULL_HANDLE);
+
+ ff_vk_frame_barrier(vkctx, exec, s->prev, img_bar, &nb_img_bar,
+ VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT,
+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
+ VK_ACCESS_SHADER_READ_BIT,
+ VK_IMAGE_LAYOUT_GENERAL,
+ VK_QUEUE_FAMILY_IGNORED);
+
+ RET(ff_vk_exec_add_dep_frame(vkctx, exec, s->cur,
+ VK_PIPELINE_STAGE_2_NONE,
+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT));
+ RET(ff_vk_create_imageviews(vkctx, exec, cur_views, s->cur,
FF_VK_REP_UINT));
+
+ ff_vk_shader_update_img_array(vkctx, exec, &s->shd, s->cur, cur_views, 0,
1,
+ VK_IMAGE_LAYOUT_GENERAL, VK_NULL_HANDLE);
+
+ ff_vk_frame_barrier(vkctx, exec, s->cur, img_bar, &nb_img_bar,
+ VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT,
+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
+ VK_ACCESS_SHADER_READ_BIT,
+ VK_IMAGE_LAYOUT_GENERAL,
+ VK_QUEUE_FAMILY_IGNORED);
+
+ /* zero buffer */
+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
+ .srcStageMask = VK_PIPELINE_STAGE_2_NONE,
+ .dstStageMask = VK_PIPELINE_STAGE_2_TRANSFER_BIT,
+ .dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .buffer = buf_vk->buf,
+ .size = buf_vk->size,
+ .offset = 0,
+ },
+ .bufferMemoryBarrierCount = 1,
+ });
+
+ vk->CmdFillBuffer(exec->buf, buf_vk->buf, 0, buf_vk->size, 0x0);
+
+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
+ .pImageMemoryBarriers = img_bar,
+ .imageMemoryBarrierCount = nb_img_bar,
+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
+ .srcStageMask = VK_PIPELINE_STAGE_2_TRANSFER_BIT,
+ .dstStageMask = VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
+ .srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
+ .dstAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT |
+ VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .buffer = buf_vk->buf,
+ .size = buf_vk->size,
+ .offset = 0,
+ },
+ .bufferMemoryBarrierCount = 1,
+ });
+
+ RET(ff_vk_shader_update_desc_buffer(&s->vkctx, exec, &s->shd, 0, 2, 0,
+ buf_vk, 0, buf_vk->size,
+ VK_FORMAT_UNDEFINED));
+
+ ff_vk_exec_bind_shader(vkctx, exec, &s->shd);
+
+ vk->CmdDispatch(exec->buf,
+ FFALIGN(in->width, s->shd.lg_size[0]) / s->shd.lg_size[0],
+ FFALIGN(in->height, s->shd.lg_size[1]) / s->shd.lg_size[1],
+ s->shd.lg_size[2]);
+
+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
+ .srcStageMask = VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
+ .dstStageMask = VK_PIPELINE_STAGE_2_HOST_BIT,
+ .srcAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT |
+ VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT,
+ .dstAccessMask = VK_ACCESS_HOST_READ_BIT,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .buffer = buf_vk->buf,
+ .size = buf_vk->size,
+ .offset = 0,
+ },
+ .bufferMemoryBarrierCount = 1,
+ });
+
+ RET(ff_vk_exec_submit(vkctx, exec));
+ ff_vk_exec_wait(vkctx, exec);
+ score = evaluate(ctx, sad);
+
+done:
+ snprintf(str, sizeof(str), "%0.3f", s->prev_mafd);
+ av_dict_set(&in->metadata, "lavfi.scd.mafd", str, 0);
+ snprintf(str, sizeof(str), "%0.3f", score);
+ av_dict_set(&in->metadata, "lavfi.scd.score", str, 0);
+
+ if (score >= s->threshold) {
+ const char *pts = av_ts2timestr(in->pts, &link->time_base);
+ av_dict_set(&in->metadata, "lavfi.scd.time", pts, 0);
+ av_log(s, AV_LOG_INFO, "lavfi.scd.score: %.3f, lavfi.scd.time: %s\n",
+ score, pts);
+ }
+
+ av_buffer_unref(&buf);
+ if (!s->sc_pass || score >= s->threshold)
+ return ff_filter_frame(outlink, in);
+ else {
+ av_frame_free(&in);
+ return 0;
+ }
+
+fail:
+ if (exec)
+ ff_vk_exec_discard_deps(&s->vkctx, exec);
+ av_frame_free(&in);
+ av_buffer_unref(&buf);
+ return err;
+}
+
+static void scdet_vulkan_uninit(AVFilterContext *avctx)
+{
+ SceneDetectVulkanContext *s = avctx->priv;
+ FFVulkanContext *vkctx = &s->vkctx;
+
+ av_frame_free(&s->prev);
+ av_frame_free(&s->cur);
+
+ ff_vk_exec_pool_free(vkctx, &s->e);
+ ff_vk_shader_free(vkctx, &s->shd);
+
+ av_buffer_pool_uninit(&s->det_buf_pool);
+
+ ff_vk_uninit(&s->vkctx);
+
+ s->initialized = 0;
+}
+
+#define OFFSET(x) offsetof(SceneDetectVulkanContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+static const AVOption scdet_vulkan_options[] = {
+ { "threshold", "set scene change detect threshold",
OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100., FLAGS },
+ { "t", "set scene change detect threshold",
OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100., FLAGS },
+ { "sc_pass", "Set the flag to pass scene change frames",
OFFSET(sc_pass), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
+ { "s", "Set the flag to pass scene change frames",
OFFSET(sc_pass), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(scdet_vulkan);
+
+static const AVFilterPad scdet_vulkan_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = &scdet_vulkan_filter_frame,
+ .config_props = &ff_vk_filter_config_input,
+ },
+};
+
+static const AVFilterPad scdet_vulkan_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_vk_filter_config_output,
+ },
+};
+
+const FFFilter ff_vf_scdet_vulkan = {
+ .p.name = "scdet_vulkan",
+ .p.description = NULL_IF_CONFIG_SMALL("Detect video scene change"),
+ .p.priv_class = &scdet_vulkan_class,
+ .p.flags = AVFILTER_FLAG_HWDEVICE,
+ .priv_size = sizeof(SceneDetectVulkanContext),
+ .init = &ff_vk_filter_init,
+ .uninit = &scdet_vulkan_uninit,
+ FILTER_INPUTS(scdet_vulkan_inputs),
+ FILTER_OUTPUTS(scdet_vulkan_outputs),
+ FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
--
2.49.0
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