mirror of https://git.ffmpeg.org/ffmpeg.git
347 lines
12 KiB
C
347 lines
12 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 "framesync.h"
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typedef struct OverlayVulkanContext {
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FFVulkanContext vkctx;
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FFFrameSync fs;
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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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int32_t o_offset[2*3];
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int32_t o_size[2*3];
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} opts;
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int overlay_x;
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int overlay_y;
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int overlay_w;
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int overlay_h;
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} OverlayVulkanContext;
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static const char overlay_noalpha[] = {
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C(0, void overlay_noalpha(int i, ivec2 pos) )
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C(0, { )
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C(1, if ((o_offset[i].x <= pos.x) && (o_offset[i].y <= pos.y) &&
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(pos.x < (o_offset[i].x + o_size[i].x)) &&
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(pos.y < (o_offset[i].y + o_size[i].y))) { )
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C(2, vec4 res = texture(overlay_img[i], pos - o_offset[i]); )
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C(2, imageStore(output_img[i], pos, res); )
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C(1, } else { )
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C(2, vec4 res = texture(main_img[i], pos); )
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C(2, imageStore(output_img[i], pos, res); )
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C(1, } )
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C(0, } )
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};
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static const char overlay_alpha[] = {
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C(0, void overlay_alpha_opaque(int i, ivec2 pos) )
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C(0, { )
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C(1, vec4 res = texture(main_img[i], pos); )
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C(1, if ((o_offset[i].x <= pos.x) && (o_offset[i].y <= pos.y) &&
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(pos.x < (o_offset[i].x + o_size[i].x)) &&
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(pos.y < (o_offset[i].y + o_size[i].y))) { )
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C(2, vec4 ovr = texture(overlay_img[i], pos - o_offset[i]); )
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C(2, res = ovr * ovr.a + res * (1.0f - ovr.a); )
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C(2, res.a = 1.0f; )
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C(2, imageStore(output_img[i], pos, res); )
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C(1, } )
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C(1, imageStore(output_img[i], pos, res); )
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C(0, } )
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};
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static av_cold int init_filter(AVFilterContext *ctx)
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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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OverlayVulkanContext *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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const int ialpha = av_pix_fmt_desc_get(s->vkctx.input_format)->flags & AV_PIX_FMT_FLAG_ALPHA;
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const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(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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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_NEAREST));
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RET(ff_vk_shader_init(&s->pl, &s->shd, "overlay_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, ivec2 o_offset[3]; );
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GLSLC(1, ivec2 o_size[3]; );
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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 = "main_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 = "overlay_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, 3, 0, 0));
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GLSLD( overlay_noalpha );
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GLSLD( overlay_alpha );
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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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GLSLF(1, int planes = %i; ,planes);
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GLSLC(1, for (int i = 0; i < planes; i++) { );
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if (ialpha)
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GLSLC(2, overlay_alpha_opaque(i, pos); );
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else
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GLSLC(2, overlay_noalpha(i, pos); );
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GLSLC(1, } );
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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->opts.o_offset[0] = s->overlay_x;
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s->opts.o_offset[1] = s->overlay_y;
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s->opts.o_offset[2] = s->opts.o_offset[0] >> pix_desc->log2_chroma_w;
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s->opts.o_offset[3] = s->opts.o_offset[1] >> pix_desc->log2_chroma_h;
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s->opts.o_offset[4] = s->opts.o_offset[0] >> pix_desc->log2_chroma_w;
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s->opts.o_offset[5] = s->opts.o_offset[1] >> pix_desc->log2_chroma_h;
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s->opts.o_size[0] = s->overlay_w;
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s->opts.o_size[1] = s->overlay_h;
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s->opts.o_size[2] = s->opts.o_size[0] >> pix_desc->log2_chroma_w;
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s->opts.o_size[3] = s->opts.o_size[1] >> pix_desc->log2_chroma_h;
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s->opts.o_size[4] = s->opts.o_size[0] >> pix_desc->log2_chroma_w;
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s->opts.o_size[5] = s->opts.o_size[1] >> pix_desc->log2_chroma_h;
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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 overlay_vulkan_blend(FFFrameSync *fs)
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{
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int err;
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AVFilterContext *ctx = fs->parent;
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OverlayVulkanContext *s = ctx->priv;
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AVFilterLink *outlink = ctx->outputs[0];
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AVFrame *input_main, *input_overlay, *out;
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err = ff_framesync_get_frame(fs, 0, &input_main, 0);
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if (err < 0)
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goto fail;
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err = ff_framesync_get_frame(fs, 1, &input_overlay, 0);
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if (err < 0)
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goto fail;
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if (!input_main || !input_overlay)
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return 0;
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if (!s->initialized) {
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AVHWFramesContext *main_fc = (AVHWFramesContext*)input_main->hw_frames_ctx->data;
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AVHWFramesContext *overlay_fc = (AVHWFramesContext*)input_overlay->hw_frames_ctx->data;
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if (main_fc->sw_format != overlay_fc->sw_format) {
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av_log(ctx, AV_LOG_ERROR, "Mismatching sw formats!\n");
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return AVERROR(EINVAL);
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}
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s->overlay_w = input_overlay->width;
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s->overlay_h = input_overlay->height;
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RET(init_filter(ctx));
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}
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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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RET(ff_vk_filter_process_Nin(&s->vkctx, &s->e, &s->pl,
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out, (AVFrame *[]){ input_main, input_overlay }, 2,
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s->sampler, &s->opts, sizeof(s->opts)));
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err = av_frame_copy_props(out, input_main);
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if (err < 0)
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goto fail;
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return ff_filter_frame(outlink, out);
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fail:
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av_frame_free(&out);
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return err;
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}
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static int overlay_vulkan_config_output(AVFilterLink *outlink)
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{
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int err;
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AVFilterContext *avctx = outlink->src;
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OverlayVulkanContext *s = avctx->priv;
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err = ff_vk_filter_config_output(outlink);
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if (err < 0)
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return err;
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err = ff_framesync_init_dualinput(&s->fs, avctx);
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if (err < 0)
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return err;
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return ff_framesync_configure(&s->fs);
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}
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static int overlay_vulkan_activate(AVFilterContext *avctx)
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{
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OverlayVulkanContext *s = avctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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static av_cold int overlay_vulkan_init(AVFilterContext *avctx)
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{
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OverlayVulkanContext *s = avctx->priv;
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s->fs.on_event = &overlay_vulkan_blend;
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return ff_vk_filter_init(avctx);
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}
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static void overlay_vulkan_uninit(AVFilterContext *avctx)
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{
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OverlayVulkanContext *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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ff_framesync_uninit(&s->fs);
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s->initialized = 0;
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}
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#define OFFSET(x) offsetof(OverlayVulkanContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption overlay_vulkan_options[] = {
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{ "x", "Set horizontal offset", OFFSET(overlay_x), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, .flags = FLAGS },
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{ "y", "Set vertical offset", OFFSET(overlay_y), AV_OPT_TYPE_INT, {.i64 = 0}, 0, INT_MAX, .flags = FLAGS },
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{ NULL },
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};
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AVFILTER_DEFINE_CLASS(overlay_vulkan);
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static const AVFilterPad overlay_vulkan_inputs[] = {
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{
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.name = "main",
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.type = AVMEDIA_TYPE_VIDEO,
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.config_props = &ff_vk_filter_config_input,
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},
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{
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.name = "overlay",
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.type = AVMEDIA_TYPE_VIDEO,
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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 overlay_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 = &overlay_vulkan_config_output,
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},
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};
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const AVFilter ff_vf_overlay_vulkan = {
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.name = "overlay_vulkan",
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.description = NULL_IF_CONFIG_SMALL("Overlay a source on top of another"),
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.priv_size = sizeof(OverlayVulkanContext),
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.init = &overlay_vulkan_init,
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.uninit = &overlay_vulkan_uninit,
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.activate = &overlay_vulkan_activate,
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FILTER_INPUTS(overlay_vulkan_inputs),
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FILTER_OUTPUTS(overlay_vulkan_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
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.priv_class = &overlay_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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