/* * 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 "libavutil/vulkan_spirv.h" #include "vulkan_filter.h" #include "filters.h" #include "video.h" typedef struct ChromaticAberrationVulkanContext { FFVulkanContext vkctx; int initialized; FFVkExecPool e; AVVulkanDeviceQueueFamily *qf; FFVulkanShader shd; VkSampler sampler; /* Push constants / options */ struct { float dist[2]; } opts; } ChromaticAberrationVulkanContext; static const char distort_chroma_kernel[] = { C(0, void distort_rgb(ivec2 size, ivec2 pos) ) C(0, { ) C(1, const vec2 p = ((vec2(pos)/vec2(size)) - 0.5f)*2.0f; ) C(1, const vec2 o = p * (dist - 1.0f); ) C(0, ) C(1, vec4 res; ) C(1, res.r = texture(input_img[0], ((p - o)/2.0f) + 0.5f).r; ) C(1, res.g = texture(input_img[0], ((p )/2.0f) + 0.5f).g; ) C(1, res.b = texture(input_img[0], ((p + o)/2.0f) + 0.5f).b; ) C(1, res.a = texture(input_img[0], ((p )/2.0f) + 0.5f).a; ) C(1, imageStore(output_img[0], pos, res); ) C(0, } ) C(0, ) C(0, void distort_chroma(int idx, ivec2 size, ivec2 pos) ) C(0, { ) C(1, vec2 p = ((vec2(pos)/vec2(size)) - 0.5f)*2.0f; ) C(1, float d = sqrt(p.x*p.x + p.y*p.y); ) C(1, p *= d / (d*dist); ) C(1, vec4 res = texture(input_img[idx], (p/2.0f) + 0.5f); ) C(1, imageStore(output_img[idx], pos, res); ) 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; ChromaticAberrationVulkanContext *s = ctx->priv; FFVulkanContext *vkctx = &s->vkctx; const int planes = av_pix_fmt_count_planes(s->vkctx.output_format); FFVulkanShader *shd = &s->shd; FFVkSPIRVCompiler *spv; FFVulkanDescriptorSetBinding *desc; /* Normalize options */ s->opts.dist[0] = (s->opts.dist[0] / 100.0f) + 1.0f; s->opts.dist[1] = (s->opts.dist[1] / 100.0f) + 1.0f; 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_init_sampler(vkctx, &s->sampler, 0, VK_FILTER_LINEAR)); RET(ff_vk_shader_init(vkctx, &s->shd, "chromatic_abberation", VK_SHADER_STAGE_COMPUTE_BIT, NULL, 0, 32, 32, 1, 0)); GLSLC(0, layout(push_constant, std430) uniform pushConstants { ); GLSLC(1, vec2 dist; ); GLSLC(0, }; ); GLSLC(0, ); ff_vk_shader_add_push_const(&s->shd, 0, sizeof(s->opts), VK_SHADER_STAGE_COMPUTE_BIT); 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, FF_VK_REP_FLOAT), .mem_quali = "writeonly", .dimensions = 2, .elems = planes, .stages = VK_SHADER_STAGE_COMPUTE_BIT, }, }; RET(ff_vk_shader_add_descriptor_set(vkctx, &s->shd, desc, 2, 0, 0)); GLSLD( distort_chroma_kernel ); GLSLC(0, void main() ); GLSLC(0, { ); GLSLC(1, ivec2 pos = ivec2(gl_GlobalInvocationID.xy); ); if (planes == 1) { GLSLC(1, distort_rgb(imageSize(output_img[0]), pos); ); } else { GLSLC(1, ivec2 size = imageSize(output_img[0]); ); GLSLC(1, vec2 npos = vec2(pos)/vec2(size); ); GLSLC(1, vec4 res = texture(input_img[0], npos); ); GLSLC(1, imageStore(output_img[0], pos, res); ); for (int i = 1; i < planes; i++) { GLSLC(0, ); GLSLF(1, size = imageSize(output_img[%i]); ,i); GLSLC(1, if (!IS_WITHIN(pos, size)) ); GLSLC(2, return; ); GLSLF(1, distort_chroma(%i, size, pos); ,i); } } GLSLC(0, } ); RET(spv->compile_shader(vkctx, spv, shd, &spv_data, &spv_len, "main", &spv_opaque)); RET(ff_vk_shader_link(vkctx, 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 int chromaber_vulkan_filter_frame(AVFilterLink *link, AVFrame *in) { int err; AVFilterContext *ctx = link->dst; ChromaticAberrationVulkanContext *s = ctx->priv; AVFilterLink *outlink = ctx->outputs[0]; AVFrame *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->shd, 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 chromaber_vulkan_uninit(AVFilterContext *avctx) { ChromaticAberrationVulkanContext *s = avctx->priv; FFVulkanContext *vkctx = &s->vkctx; FFVulkanFunctions *vk = &vkctx->vkfn; ff_vk_exec_pool_free(vkctx, &s->e); 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(ChromaticAberrationVulkanContext, x) #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) static const AVOption chromaber_vulkan_options[] = { { "dist_x", "Set horizontal distortion amount", OFFSET(opts.dist[0]), AV_OPT_TYPE_FLOAT, {.dbl = 0.0f}, -10.0f, 10.0f, .flags = FLAGS }, { "dist_y", "Set vertical distortion amount", OFFSET(opts.dist[1]), AV_OPT_TYPE_FLOAT, {.dbl = 0.0f}, -10.0f, 10.0f, .flags = FLAGS }, { NULL }, }; AVFILTER_DEFINE_CLASS(chromaber_vulkan); static const AVFilterPad chromaber_vulkan_inputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .filter_frame = &chromaber_vulkan_filter_frame, .config_props = &ff_vk_filter_config_input, }, }; static const AVFilterPad chromaber_vulkan_outputs[] = { { .name = "default", .type = AVMEDIA_TYPE_VIDEO, .config_props = &ff_vk_filter_config_output, }, }; const FFFilter ff_vf_chromaber_vulkan = { .p.name = "chromaber_vulkan", .p.description = NULL_IF_CONFIG_SMALL("Offset chroma of input video (chromatic aberration)"), .p.priv_class = &chromaber_vulkan_class, .p.flags = AVFILTER_FLAG_HWDEVICE, .priv_size = sizeof(ChromaticAberrationVulkanContext), .init = &ff_vk_filter_init, .uninit = &chromaber_vulkan_uninit, FILTER_INPUTS(chromaber_vulkan_inputs), FILTER_OUTPUTS(chromaber_vulkan_outputs), FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN), .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, };