259 lines
9.0 KiB
C
259 lines
9.0 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 AvgBlurVulkanContext {
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FFVulkanContext vkctx;
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int initialized;
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FFVkExecPool e;
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FFVkQueueFamilyCtx qf;
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VkSampler sampler;
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FFVulkanPipeline pl;
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FFVkSPIRVShader shd;
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/* Push constants / options */
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struct {
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float filter_norm[4];
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int32_t filter_len[2];
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} opts;
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int size_x;
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int size_y;
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int planes;
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} AvgBlurVulkanContext;
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static const char blur_kernel[] = {
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C(0, void distort(const ivec2 pos, const int idx) )
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C(0, { )
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C(1, vec4 sum = vec4(0); )
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C(1, for (int y = -filter_len.y; y <= filter_len.y; y++) )
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C(1, for (int x = -filter_len.x; x <= filter_len.x; x++) )
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C(2, sum += texture(input_img[idx], pos + ivec2(x, y)); )
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C(0, )
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C(1, imageStore(output_img[idx], pos, sum * filter_norm); )
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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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AvgBlurVulkanContext *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;
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FFVkSPIRVCompiler *spv;
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FFVulkanDescriptorSetBinding *desc;
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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, 1, VK_FILTER_LINEAR));
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RET(ff_vk_shader_init(&s->pl, &s->shd, "avgblur_compute",
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VK_SHADER_STAGE_COMPUTE_BIT, 0));
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shd = &s->shd;
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ff_vk_shader_set_compute_sizes(shd, 32, 1, 1);
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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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GLSLC(0, layout(push_constant, std430) uniform pushConstants { );
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GLSLC(1, vec4 filter_norm; );
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GLSLC(1, ivec2 filter_len; );
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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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GLSLD( blur_kernel );
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GLSLC(0, void main() );
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GLSLC(0, { );
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GLSLC(1, ivec2 size; );
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GLSLC(1, const ivec2 pos = ivec2(gl_GlobalInvocationID.xy); );
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for (int i = 0; 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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if (s->planes & (1 << i)) {
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GLSLF(1, distort(pos, %i); ,i);
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} else {
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GLSLF(1, vec4 res = texture(input_img[%i], pos); ,i);
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GLSLF(1, imageStore(output_img[%i], pos, res); ,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, &s->shd, &spv_data, &spv_len, "main",
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&spv_opaque));
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RET(ff_vk_shader_create(vkctx, &s->shd, spv_data, spv_len, "main"));
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RET(ff_vk_init_compute_pipeline(vkctx, &s->pl, &s->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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s->opts.filter_len[0] = s->size_x - 1;
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s->opts.filter_len[1] = s->size_y - 1;
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s->opts.filter_norm[0] = s->opts.filter_len[0]*2 + 1;
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s->opts.filter_norm[0] = 1.0/(s->opts.filter_norm[0]*s->opts.filter_norm[0]);
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s->opts.filter_norm[1] = s->opts.filter_norm[0];
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s->opts.filter_norm[2] = s->opts.filter_norm[0];
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s->opts.filter_norm[3] = s->opts.filter_norm[0];
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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 avgblur_vulkan_filter_frame(AVFilterLink *link, AVFrame *in)
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{
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int err;
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AVFrame *out = NULL;
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AVFilterContext *ctx = link->dst;
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AvgBlurVulkanContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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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,
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out, in, 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 avgblur_vulkan_uninit(AVFilterContext *avctx)
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{
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AvgBlurVulkanContext *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(AvgBlurVulkanContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption avgblur_vulkan_options[] = {
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{ "sizeX", "Set horizontal radius", OFFSET(size_x), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS },
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{ "sizeY", "Set vertical radius", OFFSET(size_y), AV_OPT_TYPE_INT, { .i64 = 3 }, 1, 32, .flags = FLAGS },
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{ "planes", "Set planes to filter (bitmask)", OFFSET(planes), AV_OPT_TYPE_INT, {.i64 = 0xF}, 0, 0xF, .flags = FLAGS },
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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(avgblur_vulkan);
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static const AVFilterPad avgblur_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 = &avgblur_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 avgblur_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_avgblur_vulkan = {
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.name = "avgblur_vulkan",
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.description = NULL_IF_CONFIG_SMALL("Apply avgblur mask to input video"),
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.priv_size = sizeof(AvgBlurVulkanContext),
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.init = &ff_vk_filter_init,
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.uninit = &avgblur_vulkan_uninit,
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FILTER_INPUTS(avgblur_vulkan_inputs),
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FILTER_OUTPUTS(avgblur_vulkan_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
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.priv_class = &avgblur_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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