| /* |
| * Copyright (c) Lynne |
| * |
| * 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 "vulkan_spirv.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef struct AvgBlurVulkanContext { |
| FFVulkanContext vkctx; |
| |
| int initialized; |
| FFVkExecPool e; |
| FFVkQueueFamilyCtx qf; |
| VkSampler sampler; |
| FFVulkanPipeline pl; |
| FFVkSPIRVShader shd; |
| |
| /* Push constants / options */ |
| struct { |
| float filter_norm[4]; |
| int32_t filter_len[2]; |
| } opts; |
| |
| int size_x; |
| int size_y; |
| int planes; |
| } AvgBlurVulkanContext; |
| |
| static const char blur_kernel[] = { |
| C(0, void distort(const ivec2 pos, const int idx) ) |
| C(0, { ) |
| C(1, vec4 sum = vec4(0); ) |
| C(1, for (int y = -filter_len.y; y <= filter_len.y; y++) ) |
| C(1, for (int x = -filter_len.x; x <= filter_len.x; x++) ) |
| C(2, sum += texture(input_img[idx], pos + ivec2(x, y)); ) |
| C(0, ) |
| C(1, imageStore(output_img[idx], pos, sum * filter_norm); ) |
| C(0, } ) |
| }; |
| |
| static av_cold int init_filter(AVFilterContext *ctx, AVFrame *in) |
| { |
| int err; |
| uint8_t *spv_data; |
| size_t spv_len; |
| void *spv_opaque = NULL; |
| AvgBlurVulkanContext *s = ctx->priv; |
| FFVulkanContext *vkctx = &s->vkctx; |
| const int planes = av_pix_fmt_count_planes(s->vkctx.output_format); |
| FFVkSPIRVShader *shd; |
| FFVkSPIRVCompiler *spv; |
| FFVulkanDescriptorSetBinding *desc; |
| |
| spv = ff_vk_spirv_init(); |
| if (!spv) { |
| av_log(ctx, AV_LOG_ERROR, "Unable to initialize SPIR-V compiler!\n"); |
| return AVERROR_EXTERNAL; |
| } |
| |
| ff_vk_qf_init(vkctx, &s->qf, VK_QUEUE_COMPUTE_BIT); |
| RET(ff_vk_exec_pool_init(vkctx, &s->qf, &s->e, s->qf.nb_queues*4, 0, 0, 0, NULL)); |
| RET(ff_vk_init_sampler(vkctx, &s->sampler, 1, VK_FILTER_LINEAR)); |
| RET(ff_vk_shader_init(&s->pl, &s->shd, "avgblur_compute", |
| VK_SHADER_STAGE_COMPUTE_BIT, 0)); |
| shd = &s->shd; |
| |
| ff_vk_shader_set_compute_sizes(shd, 32, 1, 1); |
| |
| desc = (FFVulkanDescriptorSetBinding []) { |
| { |
| .name = "input_img", |
| .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, |
| .dimensions = 2, |
| .elems = planes, |
| .stages = VK_SHADER_STAGE_COMPUTE_BIT, |
| .samplers = DUP_SAMPLER(s->sampler), |
| }, |
| { |
| .name = "output_img", |
| .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, |
| }, |
| }; |
| |
| RET(ff_vk_pipeline_descriptor_set_add(vkctx, &s->pl, shd, desc, 2, 0, 0)); |
| |
| GLSLC(0, layout(push_constant, std430) uniform pushConstants { ); |
| GLSLC(1, vec4 filter_norm; ); |
| GLSLC(1, ivec2 filter_len; ); |
| GLSLC(0, }; ); |
| GLSLC(0, ); |
| |
| ff_vk_add_push_constant(&s->pl, 0, sizeof(s->opts), |
| VK_SHADER_STAGE_COMPUTE_BIT); |
| |
| GLSLD( blur_kernel ); |
| 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_img[%i]); ,i); |
| GLSLC(1, if (!IS_WITHIN(pos, size)) ); |
| GLSLC(2, return; ); |
| if (s->planes & (1 << i)) { |
| GLSLF(1, distort(pos, %i); ,i); |
| } else { |
| GLSLF(1, vec4 res = texture(input_img[%i], pos); ,i); |
| GLSLF(1, imageStore(output_img[%i], pos, res); ,i); |
| } |
| } |
| GLSLC(0, } ); |
| |
| RET(spv->compile_shader(spv, ctx, &s->shd, &spv_data, &spv_len, "main", |
| &spv_opaque)); |
| RET(ff_vk_shader_create(vkctx, &s->shd, spv_data, spv_len, "main")); |
| |
| RET(ff_vk_init_compute_pipeline(vkctx, &s->pl, &s->shd)); |
| RET(ff_vk_exec_pipeline_register(vkctx, &s->e, &s->pl)); |
| |
| s->initialized = 1; |
| s->opts.filter_len[0] = s->size_x - 1; |
| s->opts.filter_len[1] = s->size_y - 1; |
| |
| s->opts.filter_norm[0] = s->opts.filter_len[0]*2 + 1; |
| s->opts.filter_norm[0] = 1.0/(s->opts.filter_norm[0]*s->opts.filter_norm[0]); |
| s->opts.filter_norm[1] = s->opts.filter_norm[0]; |
| s->opts.filter_norm[2] = s->opts.filter_norm[0]; |
| s->opts.filter_norm[3] = s->opts.filter_norm[0]; |
| |
| fail: |
| if (spv_opaque) |
| spv->free_shader(spv, &spv_opaque); |
| if (spv) |
| spv->uninit(&spv); |
| |
| return err; |
| } |
| |
| static int avgblur_vulkan_filter_frame(AVFilterLink *link, AVFrame *in) |
| { |
| int err; |
| AVFrame *out = NULL; |
| AVFilterContext *ctx = link->dst; |
| AvgBlurVulkanContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| err = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| if (!s->initialized) |
| RET(init_filter(ctx, in)); |
| |
| RET(ff_vk_filter_process_simple(&s->vkctx, &s->e, &s->pl, |
| out, in, s->sampler, &s->opts, sizeof(s->opts))); |
| |
| err = av_frame_copy_props(out, in); |
| if (err < 0) |
| goto fail; |
| |
| av_frame_free(&in); |
| |
| return ff_filter_frame(outlink, out); |
| |
| fail: |
| av_frame_free(&in); |
| av_frame_free(&out); |
| return err; |
| } |
| |
| static void avgblur_vulkan_uninit(AVFilterContext *avctx) |
| { |
| AvgBlurVulkanContext *s = avctx->priv; |
| FFVulkanContext *vkctx = &s->vkctx; |
| FFVulkanFunctions *vk = &vkctx->vkfn; |
| |
| ff_vk_exec_pool_free(vkctx, &s->e); |
| ff_vk_pipeline_free(vkctx, &s->pl); |
| ff_vk_shader_free(vkctx, &s->shd); |
| |
| if (s->sampler) |
| vk->DestroySampler(vkctx->hwctx->act_dev, s->sampler, |
| vkctx->hwctx->alloc); |
| |
| ff_vk_uninit(&s->vkctx); |
| |
| s->initialized = 0; |
| } |
| |
| #define OFFSET(x) offsetof(AvgBlurVulkanContext, x) |
| #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) |
| static const AVOption avgblur_vulkan_options[] = { |
| { "sizeX", "Set horizontal radius", OFFSET(size_x), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS }, |
| { "sizeY", "Set vertical radius", OFFSET(size_y), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS }, |
| { "planes", "Set planes to filter (bitmask)", OFFSET(planes), AV_OPT_TYPE_INT, {.i64 = 0xF}, 0, 0xF, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(avgblur_vulkan); |
| |
| static const AVFilterPad avgblur_vulkan_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = &avgblur_vulkan_filter_frame, |
| .config_props = &ff_vk_filter_config_input, |
| }, |
| }; |
| |
| static const AVFilterPad avgblur_vulkan_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &ff_vk_filter_config_output, |
| }, |
| }; |
| |
| const AVFilter ff_vf_avgblur_vulkan = { |
| .name = "avgblur_vulkan", |
| .description = NULL_IF_CONFIG_SMALL("Apply avgblur mask to input video"), |
| .priv_size = sizeof(AvgBlurVulkanContext), |
| .init = &ff_vk_filter_init, |
| .uninit = &avgblur_vulkan_uninit, |
| FILTER_INPUTS(avgblur_vulkan_inputs), |
| FILTER_OUTPUTS(avgblur_vulkan_outputs), |
| FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN), |
| .priv_class = &avgblur_vulkan_class, |
| .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, |
| .flags = AVFILTER_FLAG_HWDEVICE, |
| }; |