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avutil/vf_scdet_vulkan: add new filter

Carbon copy of vf_scdet.

Niklas Haas committed 1 year ago

Commit 9568e401 parent 0894cfb4 files · +415 −0Browse files

Showing the changes to libavfilter (3 of 4 files). Show all

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3 files
  1. libavfilter/Makefile +1 −0
  2. libavfilter/allfilters.c +1 −0
  3. libavfilter/vf_scdet_vulkan.c +412 −0
libavfilter/Makefile+1−0
@@ -472,6 +472,7 @@ OBJS-$(CONFIG_SCALE_VULKAN_FILTER) += vf_scale_vulkan.o vulkan.o vulka · 471 unmodified lines
472472 OBJS-$(CONFIG_SCALE2REF_FILTER) += vf_scale.o scale_eval.o framesync.o
473473 OBJS-$(CONFIG_SCALE2REF_NPP_FILTER) += vf_scale_npp.o scale_eval.o
474474 OBJS-$(CONFIG_SCDET_FILTER) += vf_scdet.o
475+OBJS-$(CONFIG_SCDET_VULKAN_FILTER) += vf_scdet_vulkan.o
475476 OBJS-$(CONFIG_SCHARR_FILTER) += vf_convolution.o
476477 OBJS-$(CONFIG_SCROLL_FILTER) += vf_scroll.o
477478 OBJS-$(CONFIG_SEGMENT_FILTER) += f_segment.o
libavfilter/allfilters.c+1−0
@@ -444,6 +444,7 @@ extern const FFFilter ff_vf_scale_vulkan; · 443 unmodified lines
444444 extern const FFFilter ff_vf_scale2ref;
445445 extern const FFFilter ff_vf_scale2ref_npp;
446446 extern const FFFilter ff_vf_scdet;
447+extern const FFFilter ff_vf_scdet_vulkan;
447448 extern const FFFilter ff_vf_scharr;
448449 extern const FFFilter ff_vf_scroll;
449450 extern const FFFilter ff_vf_segment;
libavfilter/vf_scdet_vulkan.c+412−0
@@ -0,0 +1,412 @@
1+/*
2+ * Copyright 2025 (c) Niklas Haas
3+ *
4+ * This file is part of FFmpeg.
5+ *
6+ * FFmpeg is free software; you can redistribute it and/or
7+ * modify it under the terms of the GNU Lesser General Public
8+ * License as published by the Free Software Foundation; either
9+ * version 2.1 of the License, or (at your option) any later version.
10+ *
11+ * FFmpeg is distributed in the hope that it will be useful,
12+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
13+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14+ * Lesser General Public License for more details.
15+ *
16+ * You should have received a copy of the GNU Lesser General Public
17+ * License along with FFmpeg; if not, write to the Free Software
18+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19+ */
20+
21+#include "libavutil/avassert.h"
22+#include "libavutil/vulkan_spirv.h"
23+#include "libavutil/opt.h"
24+#include "libavutil/timestamp.h"
25+#include "vulkan_filter.h"
26+
27+#include "filters.h"
28+
29+typedef struct SceneDetectVulkanContext {
30+ FFVulkanContext vkctx;
31+
32+ int initialized;
33+ FFVkExecPool e;
34+ AVVulkanDeviceQueueFamily *qf;
35+ FFVulkanShader shd;
36+ AVBufferPool *det_buf_pool;
37+
38+ double threshold;
39+ int sc_pass;
40+
41+ int nb_planes;
42+ double prev_mafd;
43+ AVFrame *prev;
44+ AVFrame *cur;
45+} SceneDetectVulkanContext;
46+
47+typedef struct SceneDetectBuf {
48+#define SLICES 16
49+ uint32_t frame_sad[SLICES];
50+} SceneDetectBuf;
51+
52+static av_cold int init_filter(AVFilterContext *ctx)
53+{
54+ int err;
55+ uint8_t *spv_data;
56+ size_t spv_len;
57+ void *spv_opaque = NULL;
58+ SceneDetectVulkanContext *s = ctx->priv;
59+ FFVulkanContext *vkctx = &s->vkctx;
60+ FFVulkanShader *shd;
61+ FFVkSPIRVCompiler *spv;
62+ FFVulkanDescriptorSetBinding *desc;
63+
64+ const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(s->vkctx.input_format);
65+ const int lumaonly = !(pixdesc->flags & AV_PIX_FMT_FLAG_RGB) &&
66+ (pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR);
67+ s->nb_planes = lumaonly ? 1 : av_pix_fmt_count_planes(s->vkctx.input_format);
68+
69+ spv = ff_vk_spirv_init();
70+ if (!spv) {
71+ av_log(ctx, AV_LOG_ERROR, "Unable to initialize SPIR-V compiler!\n");
72+ return AVERROR_EXTERNAL;
73+ }
74+
75+ s->qf = ff_vk_qf_find(vkctx, VK_QUEUE_COMPUTE_BIT, 0);
76+ if (!s->qf) {
77+ av_log(ctx, AV_LOG_ERROR, "Device has no compute queues\n");
78+ err = AVERROR(ENOTSUP);
79+ goto fail;
80+ }
81+
82+ RET(ff_vk_exec_pool_init(vkctx, s->qf, &s->e, s->qf->num*4, 0, 0, 0, NULL));
83+ RET(ff_vk_shader_init(vkctx, &s->shd, "scdet",
84+ VK_SHADER_STAGE_COMPUTE_BIT,
85+ (const char *[]) { "GL_KHR_shader_subgroup_arithmetic" }, 1,
86+ 32, 32, 1,
87+ 0));
88+ shd = &s->shd;
89+
90+ desc = (FFVulkanDescriptorSetBinding []) {
91+ {
92+ .name = "prev_img",
93+ .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
94+ .mem_layout = ff_vk_shader_rep_fmt(s->vkctx.input_format, FF_VK_REP_UINT),
95+ .mem_quali = "readonly",
96+ .dimensions = 2,
97+ .elems = av_pix_fmt_count_planes(s->vkctx.input_format),
98+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
99+ }, {
100+ .name = "cur_img",
101+ .type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
102+ .mem_layout = ff_vk_shader_rep_fmt(s->vkctx.input_format, FF_VK_REP_UINT),
103+ .mem_quali = "readonly",
104+ .dimensions = 2,
105+ .elems = av_pix_fmt_count_planes(s->vkctx.input_format),
106+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
107+ }, {
108+ .name = "sad_buffer",
109+ .type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER,
110+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
111+ .buf_content = "uint frame_sad[];",
112+ }
113+ };
114+
115+ RET(ff_vk_shader_add_descriptor_set(vkctx, &s->shd, desc, 3, 0, 0));
116+
117+ GLSLC(0, shared uint wg_sum; );
118+ GLSLC(0, void main() );
119+ GLSLC(0, { );
120+ GLSLF(1, const uint slice = gl_WorkGroupID.x %% %u; ,SLICES);
121+ GLSLC(1, const ivec2 pos = ivec2(gl_GlobalInvocationID.xy); );
122+ GLSLC(1, wg_sum = 0; );
123+ GLSLC(1, barrier(); );
124+ for (int i = 0; i < s->nb_planes; i++) {
125+ GLSLF(1, if (IS_WITHIN(pos, imageSize(cur_img[%d]))) { ,i);
126+ GLSLF(2, uvec4 prev = imageLoad(prev_img[%d], pos); ,i);
127+ GLSLF(2, uvec4 cur = imageLoad(cur_img[%d], pos); ,i);
128+ GLSLC(2, uvec4 sad = abs(ivec4(cur) - ivec4(prev)); );
129+ GLSLC(2, uint sum = subgroupAdd(sad.x + sad.y + sad.z); );
130+ GLSLC(2, if (subgroupElect()) );
131+ GLSLC(3, atomicAdd(wg_sum, sum); );
132+ GLSLC(1, } );
133+ }
134+ GLSLC(1, barrier(); );
135+ GLSLC(1, if (gl_LocalInvocationIndex == 0) );
136+ GLSLC(2, atomicAdd(frame_sad[slice], wg_sum); );
137+ GLSLC(0, } );
138+
139+ RET(spv->compile_shader(vkctx, spv, &s->shd, &spv_data, &spv_len, "main",
140+ &spv_opaque));
141+ RET(ff_vk_shader_link(vkctx, &s->shd, spv_data, spv_len, "main"));
142+
143+ RET(ff_vk_shader_register_exec(vkctx, &s->e, &s->shd));
144+
145+ s->initialized = 1;
146+
147+fail:
148+ if (spv_opaque)
149+ spv->free_shader(spv, &spv_opaque);
150+ if (spv)
151+ spv->uninit(&spv);
152+
153+ return err;
154+}
155+
156+static double evaluate(AVFilterContext *ctx, const SceneDetectBuf *buf)
157+{
158+ SceneDetectVulkanContext *s = ctx->priv;
159+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->vkctx.input_format);
160+ const AVFilterLink *inlink = ctx->inputs[0];
161+ uint64_t count;
162+ double mafd, diff;
163+
164+ uint64_t sad = 0;
165+ for (int i = 0; i < SLICES; i++)
166+ sad += buf->frame_sad[i];
167+
168+ av_assert2(s->nb_planes == 1 || !(desc->log2_chroma_w || desc->log2_chroma_h));
169+ count = s->nb_planes * inlink->w * inlink->h;
170+ mafd = (double) sad * 100.0 / count / (1ULL << desc->comp[0].depth);
171+ diff = fabs(mafd - s->prev_mafd);
172+ s->prev_mafd = mafd;
173+
174+ return av_clipf(FFMIN(mafd, diff), 0.0, 100.0);
175+}
176+
177+static int scdet_vulkan_filter_frame(AVFilterLink *link, AVFrame *in)
178+{
179+ int err;
180+ AVFilterContext *ctx = link->dst;
181+ SceneDetectVulkanContext *s = ctx->priv;
182+ AVFilterLink *outlink = ctx->outputs[0];
183+
184+ VkImageView prev_views[AV_NUM_DATA_POINTERS];
185+ VkImageView cur_views[AV_NUM_DATA_POINTERS];
186+ VkImageMemoryBarrier2 img_bar[8];
187+ int nb_img_bar = 0;
188+
189+ FFVulkanContext *vkctx = &s->vkctx;
190+ FFVulkanFunctions *vk = &vkctx->vkfn;
191+ FFVkExecContext *exec = NULL;
192+ AVBufferRef *buf = NULL;
193+ FFVkBuffer *buf_vk;
194+
195+ SceneDetectBuf *sad;
196+ double score = 0.0;
197+ char str[64];
198+
199+ if (!s->initialized)
200+ RET(init_filter(ctx));
201+
202+ av_frame_free(&s->prev);
203+ s->prev = s->cur;
204+ s->cur = av_frame_clone(in);
205+ if (!s->prev)
206+ goto done;
207+
208+ RET(ff_vk_get_pooled_buffer(vkctx, &s->det_buf_pool, &buf,
209+ VK_BUFFER_USAGE_TRANSFER_DST_BIT |
210+ VK_BUFFER_USAGE_STORAGE_BUFFER_BIT,
211+ NULL,
212+ sizeof(SceneDetectBuf),
213+ VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT |
214+ VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT |
215+ VK_MEMORY_PROPERTY_HOST_COHERENT_BIT));
216+ buf_vk = (FFVkBuffer *)buf->data;
217+ sad = (SceneDetectBuf *) buf_vk->mapped_mem;
218+
219+ exec = ff_vk_exec_get(vkctx, &s->e);
220+ ff_vk_exec_start(vkctx, exec);
221+
222+ RET(ff_vk_exec_add_dep_frame(vkctx, exec, s->prev,
223+ VK_PIPELINE_STAGE_2_NONE,
224+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT));
225+ RET(ff_vk_create_imageviews(vkctx, exec, prev_views, s->prev, FF_VK_REP_UINT));
226+
227+ ff_vk_shader_update_img_array(vkctx, exec, &s->shd, s->prev, prev_views, 0, 0,
228+ VK_IMAGE_LAYOUT_GENERAL, VK_NULL_HANDLE);
229+
230+ ff_vk_frame_barrier(vkctx, exec, s->prev, img_bar, &nb_img_bar,
231+ VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT,
232+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
233+ VK_ACCESS_SHADER_READ_BIT,
234+ VK_IMAGE_LAYOUT_GENERAL,
235+ VK_QUEUE_FAMILY_IGNORED);
236+
237+ RET(ff_vk_exec_add_dep_frame(vkctx, exec, s->cur,
238+ VK_PIPELINE_STAGE_2_NONE,
239+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT));
240+ RET(ff_vk_create_imageviews(vkctx, exec, cur_views, s->cur, FF_VK_REP_UINT));
241+
242+ ff_vk_shader_update_img_array(vkctx, exec, &s->shd, s->cur, cur_views, 0, 1,
243+ VK_IMAGE_LAYOUT_GENERAL, VK_NULL_HANDLE);
244+
245+ ff_vk_frame_barrier(vkctx, exec, s->cur, img_bar, &nb_img_bar,
246+ VK_PIPELINE_STAGE_2_ALL_COMMANDS_BIT,
247+ VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
248+ VK_ACCESS_SHADER_READ_BIT,
249+ VK_IMAGE_LAYOUT_GENERAL,
250+ VK_QUEUE_FAMILY_IGNORED);
251+
252+ /* zero buffer */
253+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
254+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
255+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
256+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
257+ .srcStageMask = VK_PIPELINE_STAGE_2_NONE,
258+ .dstStageMask = VK_PIPELINE_STAGE_2_TRANSFER_BIT,
259+ .dstAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
260+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
261+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
262+ .buffer = buf_vk->buf,
263+ .size = buf_vk->size,
264+ .offset = 0,
265+ },
266+ .bufferMemoryBarrierCount = 1,
267+ });
268+
269+ vk->CmdFillBuffer(exec->buf, buf_vk->buf, 0, buf_vk->size, 0x0);
270+
271+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
272+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
273+ .pImageMemoryBarriers = img_bar,
274+ .imageMemoryBarrierCount = nb_img_bar,
275+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
276+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
277+ .srcStageMask = VK_PIPELINE_STAGE_2_TRANSFER_BIT,
278+ .dstStageMask = VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
279+ .srcAccessMask = VK_ACCESS_TRANSFER_WRITE_BIT,
280+ .dstAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT |
281+ VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT,
282+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
283+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
284+ .buffer = buf_vk->buf,
285+ .size = buf_vk->size,
286+ .offset = 0,
287+ },
288+ .bufferMemoryBarrierCount = 1,
289+ });
290+
291+ RET(ff_vk_shader_update_desc_buffer(&s->vkctx, exec, &s->shd, 0, 2, 0,
292+ buf_vk, 0, buf_vk->size,
293+ VK_FORMAT_UNDEFINED));
294+
295+ ff_vk_exec_bind_shader(vkctx, exec, &s->shd);
296+
297+ vk->CmdDispatch(exec->buf,
298+ FFALIGN(in->width, s->shd.lg_size[0]) / s->shd.lg_size[0],
299+ FFALIGN(in->height, s->shd.lg_size[1]) / s->shd.lg_size[1],
300+ s->shd.lg_size[2]);
301+
302+ vk->CmdPipelineBarrier2(exec->buf, &(VkDependencyInfo) {
303+ .sType = VK_STRUCTURE_TYPE_DEPENDENCY_INFO,
304+ .pBufferMemoryBarriers = &(VkBufferMemoryBarrier2) {
305+ .sType = VK_STRUCTURE_TYPE_BUFFER_MEMORY_BARRIER_2,
306+ .srcStageMask = VK_PIPELINE_STAGE_2_COMPUTE_SHADER_BIT,
307+ .dstStageMask = VK_PIPELINE_STAGE_2_HOST_BIT,
308+ .srcAccessMask = VK_ACCESS_2_SHADER_STORAGE_READ_BIT |
309+ VK_ACCESS_2_SHADER_STORAGE_WRITE_BIT,
310+ .dstAccessMask = VK_ACCESS_HOST_READ_BIT,
311+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
312+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
313+ .buffer = buf_vk->buf,
314+ .size = buf_vk->size,
315+ .offset = 0,
316+ },
317+ .bufferMemoryBarrierCount = 1,
318+ });
319+
320+ RET(ff_vk_exec_submit(vkctx, exec));
321+ ff_vk_exec_wait(vkctx, exec);
322+ score = evaluate(ctx, sad);
323+
324+done:
325+ snprintf(str, sizeof(str), "%0.3f", s->prev_mafd);
326+ av_dict_set(&in->metadata, "lavfi.scd.mafd", str, 0);
327+ snprintf(str, sizeof(str), "%0.3f", score);
328+ av_dict_set(&in->metadata, "lavfi.scd.score", str, 0);
329+
330+ if (score >= s->threshold) {
331+ const char *pts = av_ts2timestr(in->pts, &link->time_base);
332+ av_dict_set(&in->metadata, "lavfi.scd.time", pts, 0);
333+ av_log(s, AV_LOG_INFO, "lavfi.scd.score: %.3f, lavfi.scd.time: %s\n",
334+ score, pts);
335+ }
336+
337+ av_buffer_unref(&buf);
338+ if (!s->sc_pass || score >= s->threshold)
339+ return ff_filter_frame(outlink, in);
340+ else {
341+ av_frame_free(&in);
342+ return 0;
343+ }
344+
345+fail:
346+ if (exec)
347+ ff_vk_exec_discard_deps(&s->vkctx, exec);
348+ av_frame_free(&in);
349+ av_buffer_unref(&buf);
350+ return err;
351+}
352+
353+static void scdet_vulkan_uninit(AVFilterContext *avctx)
354+{
355+ SceneDetectVulkanContext *s = avctx->priv;
356+ FFVulkanContext *vkctx = &s->vkctx;
357+
358+ av_frame_free(&s->prev);
359+ av_frame_free(&s->cur);
360+
361+ ff_vk_exec_pool_free(vkctx, &s->e);
362+ ff_vk_shader_free(vkctx, &s->shd);
363+
364+ av_buffer_pool_uninit(&s->det_buf_pool);
365+
366+ ff_vk_uninit(&s->vkctx);
367+
368+ s->initialized = 0;
369+}
370+
371+#define OFFSET(x) offsetof(SceneDetectVulkanContext, x)
372+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
373+static const AVOption scdet_vulkan_options[] = {
374+ { "threshold", "set scene change detect threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100., FLAGS },
375+ { "t", "set scene change detect threshold", OFFSET(threshold), AV_OPT_TYPE_DOUBLE, {.dbl = 10.}, 0, 100., FLAGS },
376+ { "sc_pass", "Set the flag to pass scene change frames", OFFSET(sc_pass), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
377+ { "s", "Set the flag to pass scene change frames", OFFSET(sc_pass), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
378+ { NULL }
379+};
380+
381+AVFILTER_DEFINE_CLASS(scdet_vulkan);
382+
383+static const AVFilterPad scdet_vulkan_inputs[] = {
384+ {
385+ .name = "default",
386+ .type = AVMEDIA_TYPE_VIDEO,
387+ .filter_frame = &scdet_vulkan_filter_frame,
388+ .config_props = &ff_vk_filter_config_input,
389+ },
390+};
391+
392+static const AVFilterPad scdet_vulkan_outputs[] = {
393+ {
394+ .name = "default",
395+ .type = AVMEDIA_TYPE_VIDEO,
396+ .config_props = &ff_vk_filter_config_output,
397+ },
398+};
399+
400+const FFFilter ff_vf_scdet_vulkan = {
401+ .p.name = "scdet_vulkan",
402+ .p.description = NULL_IF_CONFIG_SMALL("Detect video scene change"),
403+ .p.priv_class = &scdet_vulkan_class,
404+ .p.flags = AVFILTER_FLAG_HWDEVICE,
405+ .priv_size = sizeof(SceneDetectVulkanContext),
406+ .init = &ff_vk_filter_init,
407+ .uninit = &scdet_vulkan_uninit,
408+ FILTER_INPUTS(scdet_vulkan_inputs),
409+ FILTER_OUTPUTS(scdet_vulkan_outputs),
410+ FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
411+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
412+};

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