| /* |
| * 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 "scale_eval.h" |
| #include "internal.h" |
| #include "colorspace.h" |
| |
| #define CGROUPS (int [3]){ 32, 32, 1 } |
| |
| enum ScalerFunc { |
| F_BILINEAR = 0, |
| F_NEAREST, |
| |
| F_NB, |
| }; |
| |
| typedef struct ScaleVulkanContext { |
| VulkanFilterContext vkctx; |
| |
| int initialized; |
| FFVkExecContext *exec; |
| VulkanPipeline *pl; |
| FFVkBuffer params_buf; |
| |
| /* Shader updators, must be in the main filter struct */ |
| VkDescriptorImageInfo input_images[3]; |
| VkDescriptorImageInfo output_images[3]; |
| VkDescriptorBufferInfo params_desc; |
| |
| enum ScalerFunc scaler; |
| char *out_format_string; |
| enum AVColorRange out_range; |
| char *w_expr; |
| char *h_expr; |
| } ScaleVulkanContext; |
| |
| static const char scale_bilinear[] = { |
| C(0, vec4 scale_bilinear(int idx, ivec2 pos, vec2 crop_range, vec2 crop_off)) |
| C(0, { ) |
| C(1, vec2 npos = (vec2(pos) + 0.5f) / imageSize(output_img[idx]); ) |
| C(1, npos *= crop_range; /* Reduce the range */ ) |
| C(1, npos += crop_off; /* Offset the start */ ) |
| C(1, return texture(input_img[idx], npos); ) |
| C(0, } ) |
| }; |
| |
| static const char rgb2yuv[] = { |
| C(0, vec4 rgb2yuv(vec4 src, int fullrange) ) |
| C(0, { ) |
| C(1, src *= yuv_matrix; ) |
| C(1, if (fullrange == 1) { ) |
| C(2, src += vec4(0.0, 0.5, 0.5, 0.0); ) |
| C(1, } else { ) |
| C(2, src *= vec4(219.0 / 255.0, 224.0 / 255.0, 224.0 / 255.0, 1.0); ) |
| C(2, src += vec4(16.0 / 255.0, 128.0 / 255.0, 128.0 / 255.0, 0.0); ) |
| C(1, } ) |
| C(1, return src; ) |
| C(0, } ) |
| }; |
| |
| static const char write_nv12[] = { |
| C(0, void write_nv12(vec4 src, ivec2 pos) ) |
| C(0, { ) |
| C(1, imageStore(output_img[0], pos, vec4(src.r, 0.0, 0.0, 0.0)); ) |
| C(1, pos /= ivec2(2); ) |
| C(1, imageStore(output_img[1], pos, vec4(src.g, src.b, 0.0, 0.0)); ) |
| C(0, } ) |
| }; |
| |
| static const char write_420[] = { |
| C(0, void write_420(vec4 src, ivec2 pos) ) |
| C(0, { ) |
| C(1, imageStore(output_img[0], pos, vec4(src.r, 0.0, 0.0, 0.0)); ) |
| C(1, pos /= ivec2(2); ) |
| C(1, imageStore(output_img[1], pos, vec4(src.g, 0.0, 0.0, 0.0)); ) |
| C(1, imageStore(output_img[2], pos, vec4(src.b, 0.0, 0.0, 0.0)); ) |
| C(0, } ) |
| }; |
| |
| static const char write_444[] = { |
| C(0, void write_444(vec4 src, ivec2 pos) ) |
| C(0, { ) |
| C(1, imageStore(output_img[0], pos, vec4(src.r, 0.0, 0.0, 0.0)); ) |
| C(1, imageStore(output_img[1], pos, vec4(src.g, 0.0, 0.0, 0.0)); ) |
| C(1, imageStore(output_img[2], pos, vec4(src.b, 0.0, 0.0, 0.0)); ) |
| C(0, } ) |
| }; |
| |
| static av_cold int init_filter(AVFilterContext *ctx, AVFrame *in) |
| { |
| int err; |
| VkSampler *sampler; |
| VkFilter sampler_mode; |
| ScaleVulkanContext *s = ctx->priv; |
| |
| int crop_x = in->crop_left; |
| int crop_y = in->crop_top; |
| int crop_w = in->width - (in->crop_left + in->crop_right); |
| int crop_h = in->height - (in->crop_top + in->crop_bottom); |
| |
| switch (s->scaler) { |
| case F_NEAREST: |
| sampler_mode = VK_FILTER_NEAREST; |
| break; |
| case F_BILINEAR: |
| sampler_mode = VK_FILTER_LINEAR; |
| break; |
| }; |
| |
| /* Create a sampler */ |
| sampler = ff_vk_init_sampler(ctx, 0, sampler_mode); |
| if (!sampler) |
| return AVERROR_EXTERNAL; |
| |
| s->pl = ff_vk_create_pipeline(ctx); |
| if (!s->pl) |
| return AVERROR(ENOMEM); |
| |
| { /* Create the shader */ |
| VulkanDescriptorSetBinding desc_i[2] = { |
| { |
| .name = "input_img", |
| .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, |
| .dimensions = 2, |
| .elems = av_pix_fmt_count_planes(s->vkctx.input_format), |
| .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 = av_pix_fmt_count_planes(s->vkctx.output_format), |
| .stages = VK_SHADER_STAGE_COMPUTE_BIT, |
| .updater = s->output_images, |
| }, |
| }; |
| |
| VulkanDescriptorSetBinding desc_b = { |
| .name = "params", |
| .type = VK_DESCRIPTOR_TYPE_STORAGE_BUFFER, |
| .mem_quali = "readonly", |
| .mem_layout = "std430", |
| .stages = VK_SHADER_STAGE_COMPUTE_BIT, |
| .updater = &s->params_desc, |
| .buf_content = "mat4 yuv_matrix;", |
| }; |
| |
| SPIRVShader *shd = ff_vk_init_shader(ctx, s->pl, "scale_compute", |
| VK_SHADER_STAGE_COMPUTE_BIT); |
| if (!shd) |
| return AVERROR(ENOMEM); |
| |
| ff_vk_set_compute_shader_sizes(ctx, shd, CGROUPS); |
| |
| RET(ff_vk_add_descriptor_set(ctx, s->pl, shd, desc_i, 2, 0)); /* set 0 */ |
| RET(ff_vk_add_descriptor_set(ctx, s->pl, shd, &desc_b, 1, 0)); /* set 0 */ |
| |
| GLSLD( scale_bilinear ); |
| |
| if (s->vkctx.output_format != s->vkctx.input_format) { |
| GLSLD( rgb2yuv ); |
| } |
| |
| switch (s->vkctx.output_format) { |
| case AV_PIX_FMT_NV12: GLSLD(write_nv12); break; |
| case AV_PIX_FMT_YUV420P: GLSLD( write_420); break; |
| case AV_PIX_FMT_YUV444P: GLSLD( write_444); break; |
| default: break; |
| } |
| |
| GLSLC(0, void main() ); |
| GLSLC(0, { ); |
| GLSLC(1, ivec2 size; ); |
| GLSLC(1, ivec2 pos = ivec2(gl_GlobalInvocationID.xy); ); |
| GLSLF(1, vec2 in_d = vec2(%i, %i); ,in->width, in->height); |
| GLSLF(1, vec2 c_r = vec2(%i, %i) / in_d; ,crop_w, crop_h); |
| GLSLF(1, vec2 c_o = vec2(%i, %i) / in_d; ,crop_x,crop_y); |
| GLSLC(0, ); |
| |
| if (s->vkctx.output_format == s->vkctx.input_format) { |
| for (int i = 0; i < desc_i[1].elems; i++) { |
| GLSLF(1, size = imageSize(output_img[%i]); ,i); |
| GLSLC(1, if (IS_WITHIN(pos, size)) { ); |
| switch (s->scaler) { |
| case F_NEAREST: |
| case F_BILINEAR: |
| GLSLF(2, vec4 res = scale_bilinear(%i, pos, c_r, c_o); ,i); |
| GLSLF(2, imageStore(output_img[%i], pos, res); ,i); |
| break; |
| }; |
| GLSLC(1, } ); |
| } |
| } else { |
| GLSLC(1, vec4 res = scale_bilinear(0, pos, c_r, c_o); ); |
| GLSLF(1, res = rgb2yuv(res, %i); ,s->out_range == AVCOL_RANGE_JPEG); |
| switch (s->vkctx.output_format) { |
| case AV_PIX_FMT_NV12: GLSLC(1, write_nv12(res, pos); ); break; |
| case AV_PIX_FMT_YUV420P: GLSLC(1, write_420(res, pos); ); break; |
| case AV_PIX_FMT_YUV444P: GLSLC(1, write_444(res, pos); ); break; |
| default: return AVERROR(EINVAL); |
| } |
| } |
| |
| 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)); |
| |
| if (s->vkctx.output_format != s->vkctx.input_format) { |
| const struct LumaCoefficients *lcoeffs; |
| double tmp_mat[3][3]; |
| |
| struct { |
| float yuv_matrix[4][4]; |
| } *par; |
| |
| lcoeffs = ff_get_luma_coefficients(in->colorspace); |
| if (!lcoeffs) { |
| av_log(ctx, AV_LOG_ERROR, "Unsupported colorspace\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| err = ff_vk_create_buf(ctx, &s->params_buf, |
| sizeof(*par), |
| VK_BUFFER_USAGE_STORAGE_BUFFER_BIT, |
| VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT); |
| if (err) |
| return err; |
| |
| err = ff_vk_map_buffers(ctx, &s->params_buf, (uint8_t **)&par, 1, 0); |
| if (err) |
| return err; |
| |
| ff_fill_rgb2yuv_table(lcoeffs, tmp_mat); |
| |
| memset(par, 0, sizeof(*par)); |
| |
| for (int y = 0; y < 3; y++) |
| for (int x = 0; x < 3; x++) |
| par->yuv_matrix[x][y] = tmp_mat[x][y]; |
| |
| par->yuv_matrix[3][3] = 1.0; |
| |
| err = ff_vk_unmap_buffers(ctx, &s->params_buf, 1, 1); |
| if (err) |
| return err; |
| |
| s->params_desc.buffer = s->params_buf.buf; |
| s->params_desc.range = VK_WHOLE_SIZE; |
| |
| ff_vk_update_descriptor_set(ctx, s->pl, 1); |
| } |
| |
| /* 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; |
| ScaleVulkanContext *s = avctx->priv; |
| AVVkFrame *in = (AVVkFrame *)in_f->data[0]; |
| AVVkFrame *out = (AVVkFrame *)out_f->data[0]; |
| VkImageMemoryBarrier barriers[AV_NUM_DATA_POINTERS*2]; |
| int barrier_count = 0; |
| |
| for (int i = 0; i < av_pix_fmt_count_planes(s->vkctx.input_format); 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)); |
| |
| s->input_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; |
| } |
| |
| for (int i = 0; i < av_pix_fmt_count_planes(s->vkctx.output_format); i++) { |
| 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->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 < av_pix_fmt_count_planes(s->vkctx.input_format); i++) { |
| VkImageMemoryBarrier bar = { |
| .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, |
| }; |
| |
| memcpy(&barriers[barrier_count++], &bar, sizeof(VkImageMemoryBarrier)); |
| |
| in->layout[i] = bar.newLayout; |
| in->access[i] = bar.dstAccessMask; |
| } |
| |
| for (int i = 0; i < av_pix_fmt_count_planes(s->vkctx.output_format); i++) { |
| VkImageMemoryBarrier bar = { |
| .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, |
| }; |
| |
| memcpy(&barriers[barrier_count++], &bar, sizeof(VkImageMemoryBarrier)); |
| |
| out->layout[i] = bar.newLayout; |
| out->access[i] = bar.dstAccessMask; |
| } |
| |
| vkCmdPipelineBarrier(s->exec->buf, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, |
| VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, |
| 0, NULL, 0, NULL, barrier_count, barriers); |
| |
| ff_vk_bind_pipeline_exec(avctx, s->exec, s->pl); |
| |
| 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 < av_pix_fmt_count_planes(s->vkctx.input_format); i++) |
| ff_vk_destroy_imageview(avctx, &s->input_images[i].imageView); |
| for (int i = 0; i < av_pix_fmt_count_planes(s->vkctx.output_format); i++) |
| ff_vk_destroy_imageview(avctx, &s->output_images[i].imageView); |
| |
| fail: |
| return err; |
| } |
| |
| static int scale_vulkan_filter_frame(AVFilterLink *link, AVFrame *in) |
| { |
| int err; |
| AVFilterContext *ctx = link->dst; |
| ScaleVulkanContext *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; |
| |
| if (s->out_range != AVCOL_RANGE_UNSPECIFIED) |
| out->color_range = s->out_range; |
| if (s->vkctx.output_format != s->vkctx.input_format) |
| out->chroma_location = AVCHROMA_LOC_TOPLEFT; |
| |
| av_frame_free(&in); |
| |
| return ff_filter_frame(outlink, out); |
| |
| fail: |
| av_frame_free(&in); |
| av_frame_free(&out); |
| return err; |
| } |
| |
| static int scale_vulkan_config_output(AVFilterLink *outlink) |
| { |
| int err; |
| AVFilterContext *avctx = outlink->src; |
| ScaleVulkanContext *s = avctx->priv; |
| AVFilterLink *inlink = outlink->src->inputs[0]; |
| |
| err = ff_scale_eval_dimensions(s, s->w_expr, s->h_expr, inlink, outlink, |
| &s->vkctx.output_width, |
| &s->vkctx.output_height); |
| if (err < 0) |
| return err; |
| |
| if (s->out_format_string) { |
| s->vkctx.output_format = av_get_pix_fmt(s->out_format_string); |
| if (s->vkctx.output_format == AV_PIX_FMT_NONE) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid output format.\n"); |
| return AVERROR(EINVAL); |
| } |
| } else { |
| s->vkctx.output_format = s->vkctx.input_format; |
| } |
| |
| if (s->vkctx.output_format != s->vkctx.input_format) { |
| if (!ff_vk_mt_is_np_rgb(s->vkctx.input_format)) { |
| av_log(avctx, AV_LOG_ERROR, "Unsupported input format for conversion\n"); |
| return AVERROR(EINVAL); |
| } |
| if (s->vkctx.output_format != AV_PIX_FMT_NV12 && |
| s->vkctx.output_format != AV_PIX_FMT_YUV420P && |
| s->vkctx.output_format != AV_PIX_FMT_YUV444P) { |
| av_log(avctx, AV_LOG_ERROR, "Unsupported output format\n"); |
| return AVERROR(EINVAL); |
| } |
| } else if (s->out_range != AVCOL_RANGE_UNSPECIFIED) { |
| av_log(avctx, AV_LOG_ERROR, "Cannot change range without converting format\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| err = ff_vk_filter_config_output(outlink); |
| if (err < 0) |
| return err; |
| |
| return 0; |
| } |
| |
| static void scale_vulkan_uninit(AVFilterContext *avctx) |
| { |
| ScaleVulkanContext *s = avctx->priv; |
| |
| ff_vk_filter_uninit(avctx); |
| ff_vk_free_buf(avctx, &s->params_buf); |
| |
| s->initialized = 0; |
| } |
| |
| #define OFFSET(x) offsetof(ScaleVulkanContext, x) |
| #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) |
| static const AVOption scale_vulkan_options[] = { |
| { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, .flags = FLAGS }, |
| { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, .flags = FLAGS }, |
| { "scaler", "Scaler function", OFFSET(scaler), AV_OPT_TYPE_INT, {.i64 = F_BILINEAR}, 0, F_NB, .flags = FLAGS, "scaler" }, |
| { "bilinear", "Bilinear interpolation (fastest)", 0, AV_OPT_TYPE_CONST, {.i64 = F_BILINEAR}, 0, 0, .flags = FLAGS, "scaler" }, |
| { "nearest", "Nearest (useful for pixel art)", 0, AV_OPT_TYPE_CONST, {.i64 = F_NEAREST}, 0, 0, .flags = FLAGS, "scaler" }, |
| { "format", "Output video format (software format of hardware frames)", OFFSET(out_format_string), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| { "out_range", "Output colour range (from 0 to 2) (default 0)", OFFSET(out_range), AV_OPT_TYPE_INT, {.i64 = AVCOL_RANGE_UNSPECIFIED}, AVCOL_RANGE_UNSPECIFIED, AVCOL_RANGE_JPEG, .flags = FLAGS, "range" }, |
| { "full", "Full range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_JPEG }, 0, 0, FLAGS, "range" }, |
| { "limited", "Limited range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_MPEG }, 0, 0, FLAGS, "range" }, |
| { "jpeg", "Full range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_JPEG }, 0, 0, FLAGS, "range" }, |
| { "mpeg", "Limited range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_MPEG }, 0, 0, FLAGS, "range" }, |
| { "tv", "Limited range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_MPEG }, 0, 0, FLAGS, "range" }, |
| { "pc", "Full range", 0, AV_OPT_TYPE_CONST, { .i64 = AVCOL_RANGE_JPEG }, 0, 0, FLAGS, "range" }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(scale_vulkan); |
| |
| static const AVFilterPad scale_vulkan_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .filter_frame = &scale_vulkan_filter_frame, |
| .config_props = &ff_vk_filter_config_input, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad scale_vulkan_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &scale_vulkan_config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_scale_vulkan = { |
| .name = "scale_vulkan", |
| .description = NULL_IF_CONFIG_SMALL("Scale Vulkan frames"), |
| .priv_size = sizeof(ScaleVulkanContext), |
| .init = &ff_vk_filter_init, |
| .uninit = &scale_vulkan_uninit, |
| .query_formats = &ff_vk_filter_query_formats, |
| .inputs = scale_vulkan_inputs, |
| .outputs = scale_vulkan_outputs, |
| .priv_class = &scale_vulkan_class, |
| .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, |
| }; |
