From 907ae87d6eb702eb12f073df2eac6da2560eae6f Mon Sep 17 00:00:00 2001 From: Lynne Date: Sun, 27 Oct 2019 14:48:16 +0000 Subject: [PATCH] lavfi: add an chromaber_vulkan filter This commit adds a chromatic aberration filter for Vulkan that attempts to emulate a lens chromatic aberration effect. For a YUV frame it will instead shift the chroma channels, providing a simple approximation. --- configure | 1 + libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_chromaber_vulkan.c | 340 ++++++++++++++++++++++++++++++ 4 files changed, 343 insertions(+) create mode 100644 libavfilter/vf_chromaber_vulkan.c diff --git a/configure b/configure index 293754feaa..ec4ab96d1d 100755 --- a/configure +++ b/configure @@ -3469,6 +3469,7 @@ bm3d_filter_select="dct" boxblur_filter_deps="gpl" boxblur_opencl_filter_deps="opencl gpl" bs2b_filter_deps="libbs2b" +chromaber_vulkan_filter_deps="vulkan libglslang" colorkey_opencl_filter_deps="opencl" colormatrix_filter_deps="gpl" convolution_opencl_filter_deps="opencl" diff --git a/libavfilter/Makefile b/libavfilter/Makefile index e3e2f615e1..f1a673ce6d 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -176,6 +176,7 @@ OBJS-$(CONFIG_BOXBLUR_FILTER) += vf_boxblur.o boxblur.o OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \ opencl/avgblur.o boxblur.o OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o yadif_common.o +OBJS-$(CONFIG_CHROMABER_VULKAN_FILTER) += vf_chromaber_vulkan.o vulkan.o OBJS-$(CONFIG_CHROMAHOLD_FILTER) += vf_chromakey.o OBJS-$(CONFIG_CHROMAKEY_FILTER) += vf_chromakey.o OBJS-$(CONFIG_CHROMASHIFT_FILTER) += vf_chromashift.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 4acafdd269..1052978cd4 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -88,6 +88,7 @@ extern AVFilter ff_af_bandreject; extern AVFilter ff_af_bass; extern AVFilter ff_af_biquad; extern AVFilter ff_af_bs2b; +extern AVFilter ff_vf_chromaber_vulkan; extern AVFilter ff_af_channelmap; extern AVFilter ff_af_channelsplit; extern AVFilter ff_af_chorus; diff --git a/libavfilter/vf_chromaber_vulkan.c b/libavfilter/vf_chromaber_vulkan.c new file mode 100644 index 0000000000..673b3a7a68 --- /dev/null +++ b/libavfilter/vf_chromaber_vulkan.c @@ -0,0 +1,340 @@ +/* + * 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/opt.h" +#include "vulkan.h" +#include "internal.h" + +#define CGROUPS (int [3]){ 32, 32, 1 } + +typedef struct ChromaticAberrationVulkanContext { + VulkanFilterContext vkctx; + + int initialized; + FFVkExecContext *exec; + VulkanPipeline *pl; + + /* Shader updators, must be in the main filter struct */ + VkDescriptorImageInfo input_images[3]; + VkDescriptorImageInfo output_images[3]; + + /* 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; + ChromaticAberrationVulkanContext *s = ctx->priv; + + /* Create a sampler */ + VkSampler *sampler = ff_vk_init_sampler(ctx, 0, VK_FILTER_LINEAR); + if (!sampler) + return AVERROR_EXTERNAL; + + s->pl = ff_vk_create_pipeline(ctx); + if (!s->pl) + return AVERROR(ENOMEM); + + /* 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; + + { /* Create the shader */ + const int planes = av_pix_fmt_count_planes(s->vkctx.output_format); + VulkanDescriptorSetBinding desc_i[2] = { + { + .name = "input_img", + .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, + .dimensions = 2, + .elems = planes, + .stages = VK_SHADER_STAGE_COMPUTE_BIT, + .updater = s->input_images, + .samplers = DUP_SAMPLER_ARRAY4(*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, + .updater = s->output_images, + }, + }; + + SPIRVShader *shd = ff_vk_init_shader(ctx, s->pl, "chromaber_compute", + VK_SHADER_STAGE_COMPUTE_BIT); + if (!shd) + return AVERROR(ENOMEM); + + ff_vk_set_compute_shader_sizes(ctx, shd, CGROUPS); + + GLSLC(0, layout(push_constant, std430) uniform pushConstants { ); + GLSLC(1, vec2 dist; ); + GLSLC(0, }; ); + GLSLC(0, ); + + ff_vk_add_push_constant(ctx, s->pl, 0, sizeof(s->opts), + VK_SHADER_STAGE_COMPUTE_BIT); + + RET(ff_vk_add_descriptor_set(ctx, s->pl, shd, desc_i, 2, 0)); /* set 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)) { ); + GLSLF(2, distort_chroma(%i, size, pos); ,i); + GLSLC(1, } else { ); + GLSLC(2, npos = vec2(pos)/vec2(size); ); + GLSLF(2, res = texture(input_img[%i], npos); ,i); + GLSLF(2, imageStore(output_img[%i], pos, res); ,i); + GLSLC(1, } ); + } + } + GLSLC(0, } ); + + RET(ff_vk_compile_shader(ctx, shd, "main")); + } + + RET(ff_vk_init_pipeline_layout(ctx, s->pl)); + RET(ff_vk_init_compute_pipeline(ctx, s->pl)); + + /* Execution context */ + RET(ff_vk_create_exec_ctx(ctx, &s->exec, + s->vkctx.hwctx->queue_family_comp_index)); + + s->initialized = 1; + + return 0; + +fail: + return err; +} + +static int process_frames(AVFilterContext *avctx, AVFrame *out_f, AVFrame *in_f) +{ + int err = 0; + ChromaticAberrationVulkanContext *s = avctx->priv; + AVVkFrame *in = (AVVkFrame *)in_f->data[0]; + AVVkFrame *out = (AVVkFrame *)out_f->data[0]; + int planes = av_pix_fmt_count_planes(s->vkctx.output_format); + + for (int i = 0; i < planes; i++) { + RET(ff_vk_create_imageview(avctx, &s->input_images[i].imageView, in->img[i], + av_vkfmt_from_pixfmt(s->vkctx.input_format)[i], + ff_comp_identity_map)); + + RET(ff_vk_create_imageview(avctx, &s->output_images[i].imageView, out->img[i], + av_vkfmt_from_pixfmt(s->vkctx.output_format)[i], + ff_comp_identity_map)); + + s->input_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; + s->output_images[i].imageLayout = VK_IMAGE_LAYOUT_GENERAL; + } + + ff_vk_update_descriptor_set(avctx, s->pl, 0); + + ff_vk_start_exec_recording(avctx, s->exec); + + for (int i = 0; i < planes; i++) { + VkImageMemoryBarrier bar[2] = { + { + .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, + .srcAccessMask = 0, + .dstAccessMask = VK_ACCESS_SHADER_READ_BIT, + .oldLayout = in->layout[i], + .newLayout = s->input_images[i].imageLayout, + .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, + .image = in->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, + }, + }; + + vkCmdPipelineBarrier(s->exec->buf, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, + VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, + 0, NULL, 0, NULL, FF_ARRAY_ELEMS(bar), bar); + + in->layout[i] = bar[0].newLayout; + in->access[i] = bar[0].dstAccessMask; + + out->layout[i] = bar[1].newLayout; + out->access[i] = bar[1].dstAccessMask; + } + + ff_vk_bind_pipeline_exec(avctx, s->exec, s->pl); + + ff_vk_update_push_exec(avctx, s->exec, VK_SHADER_STAGE_COMPUTE_BIT, + 0, sizeof(s->opts), &s->opts); + + vkCmdDispatch(s->exec->buf, + FFALIGN(s->vkctx.output_width, CGROUPS[0])/CGROUPS[0], + FFALIGN(s->vkctx.output_height, CGROUPS[1])/CGROUPS[1], 1); + + ff_vk_add_exec_dep(avctx, s->exec, in_f, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT); + ff_vk_add_exec_dep(avctx, s->exec, out_f, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT); + + err = ff_vk_submit_exec_queue(avctx, s->exec); + if (err) + return err; + + for (int i = 0; i < planes; i++) { + ff_vk_destroy_imageview(avctx, &s->input_images[i].imageView); + ff_vk_destroy_imageview(avctx, &s->output_images[i].imageView); + } + +fail: + 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(process_frames(ctx, out, in)); + + 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; + + ff_vk_filter_uninit(avctx); + + 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, + }, + { NULL } +}; + +static const AVFilterPad chromaber_vulkan_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = &ff_vk_filter_config_output, + }, + { NULL } +}; + +AVFilter ff_vf_chromaber_vulkan = { + .name = "chromaber_vulkan", + .description = NULL_IF_CONFIG_SMALL("Offset chroma of input video (chromatic aberration)"), + .priv_size = sizeof(ChromaticAberrationVulkanContext), + .init = &ff_vk_filter_init, + .uninit = &chromaber_vulkan_uninit, + .query_formats = &ff_vk_filter_query_formats, + .inputs = chromaber_vulkan_inputs, + .outputs = chromaber_vulkan_outputs, + .priv_class = &chromaber_vulkan_class, + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, +};