mirror of https://git.ffmpeg.org/ffmpeg.git
398 lines
14 KiB
C
398 lines
14 KiB
C
/*
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* copyright (c) 2021-2022 Wu Jianhua <jianhua.wu@intel.com>
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* Copyright (c) Lynne
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*
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* The blend modes are based on the blend.c.
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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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#include "blend.h"
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#include "video.h"
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#define IN_TOP 0
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#define IN_BOTTOM 1
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typedef struct FilterParamsVulkan {
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const char *blend;
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const char *blend_func;
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double opacity;
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enum BlendMode mode;
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} FilterParamsVulkan;
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typedef struct BlendVulkanContext {
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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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FilterParamsVulkan params[4];
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double all_opacity;
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enum BlendMode all_mode;
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} BlendVulkanContext;
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#define DEFINE_BLEND_MODE(MODE, EXPR) \
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static const char blend_##MODE[] = "blend_"#MODE; \
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static const char blend_##MODE##_func[] = { \
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C(0, vec4 blend_##MODE(vec4 top, vec4 bottom, float opacity) { ) \
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C(1, vec4 dst = EXPR; ) \
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C(1, return dst; ) \
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C(0, } ) \
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};
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#define A top
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#define B bottom
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#define FN(EXPR) A + ((EXPR) - A) * opacity
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DEFINE_BLEND_MODE(NORMAL, A * opacity + B * (1.0f - opacity))
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DEFINE_BLEND_MODE(MULTIPLY, FN(1.0f * A * B / 1.0f))
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static inline void init_blend_func(FilterParamsVulkan *param)
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{
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#define CASE(MODE) case BLEND_##MODE: \
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param->blend = blend_##MODE;\
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param->blend_func = blend_##MODE##_func; \
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break;
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switch (param->mode) {
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CASE(NORMAL)
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CASE(MULTIPLY)
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default: param->blend = NULL; break;
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}
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#undef CASE
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}
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static int config_params(AVFilterContext *avctx)
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{
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BlendVulkanContext *s = avctx->priv;
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for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
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FilterParamsVulkan *param = &s->params[plane];
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if (s->all_mode >= 0)
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param->mode = s->all_mode;
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if (s->all_opacity < 1)
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param->opacity = s->all_opacity;
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init_blend_func(param);
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if (!param->blend) {
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av_log(avctx, AV_LOG_ERROR,
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"Currently the blend mode specified is not supported yet.\n");
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return AVERROR(EINVAL);
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}
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}
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return 0;
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}
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static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
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char *res, int res_len, int flags)
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{
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int ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
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if (ret < 0)
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return ret;
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return config_params(ctx);
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}
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static av_cold int init_filter(AVFilterContext *avctx)
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{
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int err = 0;
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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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BlendVulkanContext *s = avctx->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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spv = ff_vk_spirv_init();
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if (!spv) {
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av_log(avctx, 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, "blend_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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desc = (FFVulkanDescriptorSetBinding []) {
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{
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.name = "top_images",
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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 = "bottom_images",
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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_images",
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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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for (int i = 0, j = 0; i < planes; i++) {
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for (j = 0; j < i; j++)
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if (s->params[i].blend_func == s->params[j].blend_func)
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break;
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/* note: the bracket is needed, for GLSLD is a macro with multiple statements. */
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if (j == i) {
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GLSLD(s->params[i].blend_func);
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}
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}
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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_images[%i]); ,i);
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GLSLC(1, if (IS_WITHIN(pos, size)) { );
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GLSLF(2, const vec4 top = texture(top_images[%i], pos); ,i);
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GLSLF(2, const vec4 bottom = texture(bottom_images[%i], pos); ,i);
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GLSLF(2, const float opacity = %f; ,s->params[i].opacity);
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GLSLF(2, vec4 dst = %s(top, bottom, opacity); ,s->params[i].blend);
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GLSLC(0, );
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GLSLF(2, imageStore(output_images[%i], pos, dst); ,i);
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GLSLC(1, } );
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}
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GLSLC(0, } );
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RET(spv->compile_shader(spv, avctx, 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 blend_frame(FFFrameSync *fs)
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{
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int err;
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AVFilterContext *avctx = fs->parent;
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BlendVulkanContext *s = avctx->priv;
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AVFilterLink *outlink = avctx->outputs[0];
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AVFrame *top, *bottom, *out;
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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_framesync_get_frame(fs, IN_TOP, &top, 0));
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RET(ff_framesync_get_frame(fs, IN_BOTTOM, &bottom, 0));
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RET(av_frame_copy_props(out, top));
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if (!s->initialized) {
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AVHWFramesContext *top_fc = (AVHWFramesContext*)top->hw_frames_ctx->data;
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AVHWFramesContext *bottom_fc = (AVHWFramesContext*)bottom->hw_frames_ctx->data;
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if (top_fc->sw_format != bottom_fc->sw_format) {
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av_log(avctx, AV_LOG_ERROR,
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"Currently the sw format of the bottom video need to match the top!\n");
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err = AVERROR(EINVAL);
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goto fail;
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}
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RET(init_filter(avctx));
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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 *[]){ top, bottom }, 2,
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s->sampler, NULL, 0));
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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 av_cold int init(AVFilterContext *avctx)
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{
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BlendVulkanContext *s = avctx->priv;
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s->fs.on_event = blend_frame;
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return ff_vk_filter_init(avctx);
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}
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static av_cold void uninit(AVFilterContext *avctx)
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{
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BlendVulkanContext *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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static int config_props_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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BlendVulkanContext *s = avctx->priv;
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AVFilterLink *toplink = avctx->inputs[IN_TOP];
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AVFilterLink *bottomlink = avctx->inputs[IN_BOTTOM];
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if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
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av_log(avctx, AV_LOG_ERROR, "First input link %s parameters "
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"(size %dx%d) do not match the corresponding "
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"second input link %s parameters (size %dx%d)\n",
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avctx->input_pads[IN_TOP].name, toplink->w, toplink->h,
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avctx->input_pads[IN_BOTTOM].name, bottomlink->w, bottomlink->h);
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return AVERROR(EINVAL);
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}
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outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
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outlink->frame_rate = toplink->frame_rate;
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RET(ff_vk_filter_config_output(outlink));
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RET(ff_framesync_init_dualinput(&s->fs, avctx));
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RET(ff_framesync_configure(&s->fs));
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outlink->time_base = s->fs.time_base;
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RET(config_params(avctx));
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fail:
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return err;
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}
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static int activate(AVFilterContext *avctx)
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{
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BlendVulkanContext *s = avctx->priv;
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return ff_framesync_activate(&s->fs);
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}
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#define OFFSET(x) offsetof(BlendVulkanContext, x)
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
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static const AVOption blend_vulkan_options[] = {
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{ "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, .unit = "mode" },
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{ "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, .unit = "mode" },
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{ "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, .unit = "mode" },
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{ "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, BLEND_NB - 1, FLAGS, .unit = "mode" },
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{ "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, BLEND_NB - 1, FLAGS, .unit = "mode" },
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{ "normal", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_NORMAL }, 0, 0, FLAGS, .unit = "mode" },
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{ "multiply", "", 0, AV_OPT_TYPE_CONST, { .i64 = BLEND_MULTIPLY }, 0, 0, FLAGS, .unit = "mode" },
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{ "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
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{ "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
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{ "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
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{ "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
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{ "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, { .dbl = 1 }, 0, 1, FLAGS },
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{ NULL }
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};
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AVFILTER_DEFINE_CLASS(blend_vulkan);
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static const AVFilterPad blend_vulkan_inputs[] = {
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{
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.name = "top",
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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 = "bottom",
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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 blend_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 = &config_props_output,
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}
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};
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const AVFilter ff_vf_blend_vulkan = {
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.name = "blend_vulkan",
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.description = NULL_IF_CONFIG_SMALL("Blend two video frames in Vulkan"),
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.priv_size = sizeof(BlendVulkanContext),
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.init = &init,
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.uninit = &uninit,
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.activate = &activate,
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FILTER_INPUTS(blend_vulkan_inputs),
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FILTER_OUTPUTS(blend_vulkan_outputs),
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FILTER_SINGLE_PIXFMT(AV_PIX_FMT_VULKAN),
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.priv_class = &blend_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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.process_command = &process_command,
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};
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