260 lines
9.8 KiB
C
260 lines
9.8 KiB
C
/*
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* Copyright (c) Lynne
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "libavutil/random_seed.h"
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#include "libavutil/opt.h"
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#include "vulkan_filter.h"
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#include "vulkan_spirv.h"
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#include "internal.h"
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#include "video.h"
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typedef struct ChromaticAberrationVulkanContext {
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FFVulkanContext vkctx;
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int initialized;
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FFVulkanPipeline pl;
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FFVkExecPool e;
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FFVkQueueFamilyCtx qf;
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FFVkSPIRVShader shd;
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VkSampler sampler;
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/* Push constants / options */
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struct {
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float dist[2];
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} opts;
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} ChromaticAberrationVulkanContext;
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static const char distort_chroma_kernel[] = {
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C(0, void distort_rgb(ivec2 size, ivec2 pos) )
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C(0, { )
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C(1, const vec2 p = ((vec2(pos)/vec2(size)) - 0.5f)*2.0f; )
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C(1, const vec2 o = p * (dist - 1.0f); )
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C(0, )
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C(1, vec4 res; )
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C(1, res.r = texture(input_img[0], ((p - o)/2.0f) + 0.5f).r; )
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C(1, res.g = texture(input_img[0], ((p )/2.0f) + 0.5f).g; )
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C(1, res.b = texture(input_img[0], ((p + o)/2.0f) + 0.5f).b; )
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C(1, res.a = texture(input_img[0], ((p )/2.0f) + 0.5f).a; )
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C(1, imageStore(output_img[0], pos, res); )
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C(0, } )
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C(0, )
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C(0, void distort_chroma(int idx, ivec2 size, ivec2 pos) )
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C(0, { )
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C(1, vec2 p = ((vec2(pos)/vec2(size)) - 0.5f)*2.0f; )
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C(1, float d = sqrt(p.x*p.x + p.y*p.y); )
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C(1, p *= d / (d*dist); )
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C(1, vec4 res = texture(input_img[idx], (p/2.0f) + 0.5f); )
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C(1, imageStore(output_img[idx], pos, res); )
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C(0, } )
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};
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static av_cold int init_filter(AVFilterContext *ctx, AVFrame *in)
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{
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int err;
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uint8_t *spv_data;
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size_t spv_len;
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void *spv_opaque = NULL;
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ChromaticAberrationVulkanContext *s = ctx->priv;
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FFVulkanContext *vkctx = &s->vkctx;
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const int planes = av_pix_fmt_count_planes(s->vkctx.output_format);
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FFVkSPIRVShader *shd = &s->shd;
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FFVkSPIRVCompiler *spv;
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FFVulkanDescriptorSetBinding *desc;
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/* Normalize options */
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s->opts.dist[0] = (s->opts.dist[0] / 100.0f) + 1.0f;
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s->opts.dist[1] = (s->opts.dist[1] / 100.0f) + 1.0f;
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spv = ff_vk_spirv_init();
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if (!spv) {
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av_log(ctx, AV_LOG_ERROR, "Unable to initialize SPIR-V compiler!\n");
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return AVERROR_EXTERNAL;
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}
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ff_vk_qf_init(vkctx, &s->qf, VK_QUEUE_COMPUTE_BIT);
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RET(ff_vk_exec_pool_init(vkctx, &s->qf, &s->e, s->qf.nb_queues*4, 0, 0, 0, NULL));
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RET(ff_vk_init_sampler(vkctx, &s->sampler, 0, VK_FILTER_LINEAR));
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RET(ff_vk_shader_init(&s->pl, &s->shd, "chromaber_compute",
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VK_SHADER_STAGE_COMPUTE_BIT, 0));
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ff_vk_shader_set_compute_sizes(&s->shd, 32, 32, 1);
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GLSLC(0, layout(push_constant, std430) uniform pushConstants { );
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GLSLC(1, vec2 dist; );
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GLSLC(0, }; );
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GLSLC(0, );
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ff_vk_add_push_constant(&s->pl, 0, sizeof(s->opts),
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VK_SHADER_STAGE_COMPUTE_BIT);
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desc = (FFVulkanDescriptorSetBinding []) {
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{
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.name = "input_img",
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.type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
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.dimensions = 2,
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.elems = planes,
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.stages = VK_SHADER_STAGE_COMPUTE_BIT,
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.samplers = DUP_SAMPLER(s->sampler),
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},
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{
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.name = "output_img",
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.type = VK_DESCRIPTOR_TYPE_STORAGE_IMAGE,
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.mem_layout = ff_vk_shader_rep_fmt(s->vkctx.output_format),
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.mem_quali = "writeonly",
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.dimensions = 2,
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.elems = planes,
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.stages = VK_SHADER_STAGE_COMPUTE_BIT,
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},
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};
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RET(ff_vk_pipeline_descriptor_set_add(vkctx, &s->pl, shd, desc, 2, 0, 0));
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GLSLD( distort_chroma_kernel );
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GLSLC(0, void main() );
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GLSLC(0, { );
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GLSLC(1, ivec2 pos = ivec2(gl_GlobalInvocationID.xy); );
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if (planes == 1) {
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GLSLC(1, distort_rgb(imageSize(output_img[0]), pos); );
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} else {
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GLSLC(1, ivec2 size = imageSize(output_img[0]); );
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GLSLC(1, vec2 npos = vec2(pos)/vec2(size); );
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GLSLC(1, vec4 res = texture(input_img[0], npos); );
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GLSLC(1, imageStore(output_img[0], pos, res); );
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for (int i = 1; i < planes; i++) {
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GLSLC(0, );
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GLSLF(1, size = imageSize(output_img[%i]); ,i);
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GLSLC(1, if (!IS_WITHIN(pos, size)) );
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GLSLC(2, return; );
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GLSLF(1, distort_chroma(%i, size, pos); ,i);
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}
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}
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GLSLC(0, } );
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RET(spv->compile_shader(spv, ctx, shd, &spv_data, &spv_len, "main",
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&spv_opaque));
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RET(ff_vk_shader_create(vkctx, shd, spv_data, spv_len, "main"));
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RET(ff_vk_init_compute_pipeline(vkctx, &s->pl, shd));
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RET(ff_vk_exec_pipeline_register(vkctx, &s->e, &s->pl));
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s->initialized = 1;
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fail:
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if (spv_opaque)
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spv->free_shader(spv, &spv_opaque);
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if (spv)
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spv->uninit(&spv);
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return err;
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}
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static int chromaber_vulkan_filter_frame(AVFilterLink *link, AVFrame *in)
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{
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int err;
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AVFilterContext *ctx = link->dst;
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ChromaticAberrationVulkanContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!out) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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if (!s->initialized)
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RET(init_filter(ctx, in));
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RET(ff_vk_filter_process_simple(&s->vkctx, &s->e, &s->pl, out, in,
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s->sampler, &s->opts, sizeof(s->opts)));
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err = av_frame_copy_props(out, in);
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if (err < 0)
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goto fail;
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av_frame_free(&in);
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return ff_filter_frame(outlink, out);
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fail:
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av_frame_free(&in);
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av_frame_free(&out);
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return err;
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}
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static void chromaber_vulkan_uninit(AVFilterContext *avctx)
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{
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ChromaticAberrationVulkanContext *s = avctx->priv;
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FFVulkanContext *vkctx = &s->vkctx;
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FFVulkanFunctions *vk = &vkctx->vkfn;
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ff_vk_exec_pool_free(vkctx, &s->e);
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ff_vk_pipeline_free(vkctx, &s->pl);
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ff_vk_shader_free(vkctx, &s->shd);
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if (s->sampler)
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vk->DestroySampler(vkctx->hwctx->act_dev, s->sampler,
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vkctx->hwctx->alloc);
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ff_vk_uninit(&s->vkctx);
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s->initialized = 0;
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}
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#define OFFSET(x) offsetof(ChromaticAberrationVulkanContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption chromaber_vulkan_options[] = {
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{ "dist_x", "Set horizontal distortion amount", OFFSET(opts.dist[0]), AV_OPT_TYPE_FLOAT, {.dbl = 0.0f}, -10.0f, 10.0f, .flags = FLAGS },
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{ "dist_y", "Set vertical distortion amount", OFFSET(opts.dist[1]), AV_OPT_TYPE_FLOAT, {.dbl = 0.0f}, -10.0f, 10.0f, .flags = FLAGS },
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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(chromaber_vulkan);
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static const AVFilterPad chromaber_vulkan_inputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.filter_frame = &chromaber_vulkan_filter_frame,
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.config_props = &ff_vk_filter_config_input,
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},
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};
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static const AVFilterPad chromaber_vulkan_outputs[] = {
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{
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.name = "default",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = &ff_vk_filter_config_output,
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},
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};
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const AVFilter ff_vf_chromaber_vulkan = {
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.name = "chromaber_vulkan",
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.description = NULL_IF_CONFIG_SMALL("Offset chroma of input video (chromatic aberration)"),
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.priv_size = sizeof(ChromaticAberrationVulkanContext),
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.init = &ff_vk_filter_init,
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.uninit = &chromaber_vulkan_uninit,
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FILTER_INPUTS(chromaber_vulkan_inputs),
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FILTER_OUTPUTS(chromaber_vulkan_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
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.priv_class = &chromaber_vulkan_class,
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.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
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.flags = AVFILTER_FLAG_HWDEVICE,
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};
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