| /* |
| * 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 "vulkan.h" |
| #include "internal.h" |
| #include "framesync.h" |
| |
| #define CGROUPS (int [3]){ 32, 32, 1 } |
| |
| typedef struct OverlayVulkanContext { |
| VulkanFilterContext vkctx; |
| |
| int initialized; |
| VulkanPipeline *pl; |
| FFVkExecContext *exec; |
| FFFrameSync fs; |
| FFVkBuffer params_buf; |
| |
| /* Shader updators, must be in the main filter struct */ |
| VkDescriptorImageInfo main_images[3]; |
| VkDescriptorImageInfo overlay_images[3]; |
| VkDescriptorImageInfo output_images[3]; |
| VkDescriptorBufferInfo params_desc; |
| |
| int overlay_x; |
| int overlay_y; |
| int overlay_w; |
| int overlay_h; |
| } OverlayVulkanContext; |
| |
| static const char overlay_noalpha[] = { |
| C(0, void overlay_noalpha(int i, ivec2 pos) ) |
| C(0, { ) |
| C(1, if ((o_offset[i].x <= pos.x) && (o_offset[i].y <= pos.y) && |
| (pos.x < (o_offset[i].x + o_size[i].x)) && |
| (pos.y < (o_offset[i].y + o_size[i].y))) { ) |
| C(2, vec4 res = texture(overlay_img[i], pos - o_offset[i]); ) |
| C(2, imageStore(output_img[i], pos, res); ) |
| C(1, } else { ) |
| C(2, vec4 res = texture(main_img[i], pos); ) |
| C(2, imageStore(output_img[i], pos, res); ) |
| C(1, } ) |
| C(0, } ) |
| }; |
| |
| static const char overlay_alpha[] = { |
| C(0, void overlay_alpha_opaque(int i, ivec2 pos) ) |
| C(0, { ) |
| C(1, vec4 res = texture(main_img[i], pos); ) |
| C(1, if ((o_offset[i].x <= pos.x) && (o_offset[i].y <= pos.y) && |
| (pos.x < (o_offset[i].x + o_size[i].x)) && |
| (pos.y < (o_offset[i].y + o_size[i].y))) { ) |
| C(2, vec4 ovr = texture(overlay_img[i], pos - o_offset[i]); ) |
| C(2, res = ovr * ovr.a + res * (1.0f - ovr.a); ) |
| C(2, res.a = 1.0f; ) |
| C(2, imageStore(output_img[i], pos, res); ) |
| C(1, } ) |
| C(1, imageStore(output_img[i], pos, res); ) |
| C(0, } ) |
| }; |
| |
| static av_cold int init_filter(AVFilterContext *ctx) |
| { |
| int err; |
| OverlayVulkanContext *s = ctx->priv; |
| VkSampler *sampler = ff_vk_init_sampler(ctx, 1, VK_FILTER_NEAREST); |
| if (!sampler) |
| return AVERROR_EXTERNAL; |
| |
| s->pl = ff_vk_create_pipeline(ctx); |
| if (!s->pl) |
| return AVERROR(ENOMEM); |
| |
| s->vkctx.queue_family_idx = s->vkctx.hwctx->queue_family_comp_index; |
| s->vkctx.queue_count = GET_QUEUE_COUNT(s->vkctx.hwctx, 0, 1, 0); |
| s->vkctx.cur_queue_idx = av_get_random_seed() % s->vkctx.queue_count; |
| |
| { /* Create the shader */ |
| const int planes = av_pix_fmt_count_planes(s->vkctx.output_format); |
| const int ialpha = av_pix_fmt_desc_get(s->vkctx.input_format)->flags & AV_PIX_FMT_FLAG_ALPHA; |
| |
| VulkanDescriptorSetBinding desc_i[3] = { |
| { |
| .name = "main_img", |
| .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, |
| .dimensions = 2, |
| .elems = planes, |
| .stages = VK_SHADER_STAGE_COMPUTE_BIT, |
| .updater = s->main_images, |
| .samplers = DUP_SAMPLER_ARRAY4(*sampler), |
| }, |
| { |
| .name = "overlay_img", |
| .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER, |
| .dimensions = 2, |
| .elems = planes, |
| .stages = VK_SHADER_STAGE_COMPUTE_BIT, |
| .updater = s->overlay_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, |
| }, |
| }; |
| |
| 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 = "ivec2 o_offset[3], o_size[3];", |
| }; |
| |
| SPIRVShader *shd = ff_vk_init_shader(ctx, s->pl, "overlay_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, 3, 0)); /* set 0 */ |
| RET(ff_vk_add_descriptor_set(ctx, s->pl, shd, &desc_b, 1, 0)); /* set 1 */ |
| |
| GLSLD( overlay_noalpha ); |
| GLSLD( overlay_alpha ); |
| GLSLC(0, void main() ); |
| GLSLC(0, { ); |
| GLSLC(1, ivec2 pos = ivec2(gl_GlobalInvocationID.xy); ); |
| GLSLF(1, int planes = %i; ,planes); |
| GLSLC(1, for (int i = 0; i < planes; i++) { ); |
| if (ialpha) |
| GLSLC(2, overlay_alpha_opaque(i, pos); ); |
| else |
| GLSLC(2, overlay_noalpha(i, pos); ); |
| 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)); |
| |
| { /* Create and update buffer */ |
| const AVPixFmtDescriptor *desc; |
| |
| /* NOTE: std430 requires the same identical struct layout, padding and |
| * alignment as C, so we're allowed to do this, as this will map |
| * exactly to what the shader recieves */ |
| struct { |
| int32_t o_offset[2*3]; |
| int32_t o_size[2*3]; |
| } *par; |
| |
| 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; |
| |
| desc = av_pix_fmt_desc_get(s->vkctx.output_format); |
| |
| par->o_offset[0] = s->overlay_x; |
| par->o_offset[1] = s->overlay_y; |
| par->o_offset[2] = par->o_offset[0] >> desc->log2_chroma_w; |
| par->o_offset[3] = par->o_offset[1] >> desc->log2_chroma_h; |
| par->o_offset[4] = par->o_offset[0] >> desc->log2_chroma_w; |
| par->o_offset[5] = par->o_offset[1] >> desc->log2_chroma_h; |
| |
| par->o_size[0] = s->overlay_w; |
| par->o_size[1] = s->overlay_h; |
| par->o_size[2] = par->o_size[0] >> desc->log2_chroma_w; |
| par->o_size[3] = par->o_size[1] >> desc->log2_chroma_h; |
| par->o_size[4] = par->o_size[0] >> desc->log2_chroma_w; |
| par->o_size[5] = par->o_size[1] >> desc->log2_chroma_h; |
| |
| 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->initialized = 1; |
| |
| return 0; |
| |
| fail: |
| return err; |
| } |
| |
| static int process_frames(AVFilterContext *avctx, AVFrame *out_f, |
| AVFrame *main_f, AVFrame *overlay_f) |
| { |
| int err; |
| VkCommandBuffer cmd_buf; |
| OverlayVulkanContext *s = avctx->priv; |
| int planes = av_pix_fmt_count_planes(s->vkctx.output_format); |
| |
| AVVkFrame *out = (AVVkFrame *)out_f->data[0]; |
| AVVkFrame *main = (AVVkFrame *)main_f->data[0]; |
| AVVkFrame *overlay = (AVVkFrame *)overlay_f->data[0]; |
| |
| AVHWFramesContext *main_fc = (AVHWFramesContext*)main_f->hw_frames_ctx->data; |
| AVHWFramesContext *overlay_fc = (AVHWFramesContext*)overlay_f->hw_frames_ctx->data; |
| |
| /* Update descriptors and init the exec context */ |
| ff_vk_start_exec_recording(avctx, s->exec); |
| cmd_buf = ff_vk_get_exec_buf(avctx, s->exec); |
| |
| for (int i = 0; i < planes; i++) { |
| RET(ff_vk_create_imageview(avctx, s->exec, &s->main_images[i].imageView, |
| main->img[i], |
| av_vkfmt_from_pixfmt(main_fc->sw_format)[i], |
| ff_comp_identity_map)); |
| |
| RET(ff_vk_create_imageview(avctx, s->exec, &s->overlay_images[i].imageView, |
| overlay->img[i], |
| av_vkfmt_from_pixfmt(overlay_fc->sw_format)[i], |
| ff_comp_identity_map)); |
| |
| RET(ff_vk_create_imageview(avctx, s->exec, &s->output_images[i].imageView, |
| out->img[i], |
| av_vkfmt_from_pixfmt(s->vkctx.output_format)[i], |
| ff_comp_identity_map)); |
| |
| s->main_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL; |
| s->overlay_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); |
| |
| for (int i = 0; i < planes; i++) { |
| VkImageMemoryBarrier bar[3] = { |
| { |
| .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER, |
| .srcAccessMask = 0, |
| .dstAccessMask = VK_ACCESS_SHADER_READ_BIT, |
| .oldLayout = main->layout[i], |
| .newLayout = s->main_images[i].imageLayout, |
| .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, |
| .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, |
| .image = main->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_READ_BIT, |
| .oldLayout = overlay->layout[i], |
| .newLayout = s->overlay_images[i].imageLayout, |
| .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, |
| .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED, |
| .image = overlay->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(cmd_buf, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT, |
| VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0, |
| 0, NULL, 0, NULL, FF_ARRAY_ELEMS(bar), bar); |
| |
| main->layout[i] = bar[0].newLayout; |
| main->access[i] = bar[0].dstAccessMask; |
| |
| overlay->layout[i] = bar[1].newLayout; |
| overlay->access[i] = bar[1].dstAccessMask; |
| |
| out->layout[i] = bar[2].newLayout; |
| out->access[i] = bar[2].dstAccessMask; |
| } |
| |
| ff_vk_bind_pipeline_exec(avctx, s->exec, s->pl); |
| |
| vkCmdDispatch(cmd_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, main_f, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT); |
| ff_vk_add_exec_dep(avctx, s->exec, overlay_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; |
| |
| return err; |
| |
| fail: |
| ff_vk_discard_exec_deps(avctx, s->exec); |
| return err; |
| } |
| |
| static int overlay_vulkan_blend(FFFrameSync *fs) |
| { |
| int err; |
| AVFilterContext *ctx = fs->parent; |
| OverlayVulkanContext *s = ctx->priv; |
| AVFilterLink *outlink = ctx->outputs[0]; |
| AVFrame *input_main, *input_overlay, *out; |
| |
| err = ff_framesync_get_frame(fs, 0, &input_main, 0); |
| if (err < 0) |
| goto fail; |
| err = ff_framesync_get_frame(fs, 1, &input_overlay, 0); |
| if (err < 0) |
| goto fail; |
| |
| if (!input_main || !input_overlay) |
| return 0; |
| |
| if (!s->initialized) { |
| AVHWFramesContext *main_fc = (AVHWFramesContext*)input_main->hw_frames_ctx->data; |
| AVHWFramesContext *overlay_fc = (AVHWFramesContext*)input_overlay->hw_frames_ctx->data; |
| if (main_fc->sw_format != overlay_fc->sw_format) { |
| av_log(ctx, AV_LOG_ERROR, "Mismatching sw formats!\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| s->overlay_w = input_overlay->width; |
| s->overlay_h = input_overlay->height; |
| |
| RET(init_filter(ctx)); |
| } |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| err = AVERROR(ENOMEM); |
| goto fail; |
| } |
| |
| RET(process_frames(ctx, out, input_main, input_overlay)); |
| |
| err = av_frame_copy_props(out, input_main); |
| if (err < 0) |
| goto fail; |
| |
| return ff_filter_frame(outlink, out); |
| |
| fail: |
| av_frame_free(&out); |
| return err; |
| } |
| |
| static int overlay_vulkan_config_output(AVFilterLink *outlink) |
| { |
| int err; |
| AVFilterContext *avctx = outlink->src; |
| OverlayVulkanContext *s = avctx->priv; |
| |
| err = ff_vk_filter_config_output(outlink); |
| if (err < 0) |
| return err; |
| |
| err = ff_framesync_init_dualinput(&s->fs, avctx); |
| if (err < 0) |
| return err; |
| |
| return ff_framesync_configure(&s->fs); |
| } |
| |
| static int overlay_vulkan_activate(AVFilterContext *avctx) |
| { |
| OverlayVulkanContext *s = avctx->priv; |
| |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| static av_cold int overlay_vulkan_init(AVFilterContext *avctx) |
| { |
| OverlayVulkanContext *s = avctx->priv; |
| |
| s->fs.on_event = &overlay_vulkan_blend; |
| |
| return ff_vk_filter_init(avctx); |
| } |
| |
| static void overlay_vulkan_uninit(AVFilterContext *avctx) |
| { |
| OverlayVulkanContext *s = avctx->priv; |
| |
| ff_vk_filter_uninit(avctx); |
| ff_framesync_uninit(&s->fs); |
| |
| ff_vk_free_buf(avctx, &s->params_buf); |
| |
| s->initialized = 0; |
| } |
| |
| #define OFFSET(x) offsetof(OverlayVulkanContext, x) |
| #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) |
| static const AVOption overlay_vulkan_options[] = { |
| { "x", "Set horizontal offset", OFFSET(overlay_x), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, .flags = FLAGS }, |
| { "y", "Set vertical offset", OFFSET(overlay_y), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(overlay_vulkan); |
| |
| static const AVFilterPad overlay_vulkan_inputs[] = { |
| { |
| .name = "main", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &ff_vk_filter_config_input, |
| }, |
| { |
| .name = "overlay", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &ff_vk_filter_config_input, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad overlay_vulkan_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = &overlay_vulkan_config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_overlay_vulkan = { |
| .name = "overlay_vulkan", |
| .description = NULL_IF_CONFIG_SMALL("Overlay a source on top of another"), |
| .priv_size = sizeof(OverlayVulkanContext), |
| .init = &overlay_vulkan_init, |
| .uninit = &overlay_vulkan_uninit, |
| .query_formats = &ff_vk_filter_query_formats, |
| .activate = &overlay_vulkan_activate, |
| .inputs = overlay_vulkan_inputs, |
| .outputs = overlay_vulkan_outputs, |
| .priv_class = &overlay_vulkan_class, |
| .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, |
| }; |
