[FFmpeg-devel] [PATCH 5/6] lavfi: add a Vulkan scale filter
Rostislav Pehlivanov
atomnuker at gmail.com
Thu Jun 21 19:55:42 EEST 2018
Can convert to RGB using very fast fixed-function conversions.
Signed-off-by: Rostislav Pehlivanov <atomnuker at gmail.com>
---
configure | 1 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_scale_vulkan.c | 395 ++++++++++++++++++++++++++++++++++
4 files changed, 398 insertions(+)
create mode 100644 libavfilter/vf_scale_vulkan.c
diff --git a/configure b/configure
index cd5229ef2d..d1ceb9e38d 100755
--- a/configure
+++ b/configure
@@ -3428,6 +3428,7 @@ zmq_filter_deps="libzmq"
zoompan_filter_deps="swscale"
zscale_filter_deps="libzimg const_nan"
scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
+scale_vulkan_filter_deps="vulkan libshaderc"
vpp_qsv_filter_deps="libmfx"
vpp_qsv_filter_select="qsvvpp"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index dbb7a859dd..6e2d3681ec 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -317,6 +317,7 @@ OBJS-$(CONFIG_SCALE_CUDA_FILTER) += vf_scale_cuda.o vf_scale_cuda.pt
OBJS-$(CONFIG_SCALE_NPP_FILTER) += vf_scale_npp.o scale.o
OBJS-$(CONFIG_SCALE_QSV_FILTER) += vf_scale_qsv.o
OBJS-$(CONFIG_SCALE_VAAPI_FILTER) += vf_scale_vaapi.o scale.o vaapi_vpp.o
+OBJS-$(CONFIG_SCALE_VULKAN_FILTER) += vf_scale_vulkan.o scale.o vulkan.o
OBJS-$(CONFIG_SCALE2REF_FILTER) += vf_scale.o scale.o
OBJS-$(CONFIG_SELECT_FILTER) += f_select.o
OBJS-$(CONFIG_SELECTIVECOLOR_FILTER) += vf_selectivecolor.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 5848ad9b4f..ee58cc9eee 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -306,6 +306,7 @@ extern AVFilter ff_vf_scale_cuda;
extern AVFilter ff_vf_scale_npp;
extern AVFilter ff_vf_scale_qsv;
extern AVFilter ff_vf_scale_vaapi;
+extern AVFilter ff_vf_scale_vulkan;
extern AVFilter ff_vf_scale2ref;
extern AVFilter ff_vf_select;
extern AVFilter ff_vf_selectivecolor;
diff --git a/libavfilter/vf_scale_vulkan.c b/libavfilter/vf_scale_vulkan.c
new file mode 100644
index 0000000000..4a5647072d
--- /dev/null
+++ b/libavfilter/vf_scale_vulkan.c
@@ -0,0 +1,395 @@
+/*
+ * 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.h"
+#include "internal.h"
+
+enum ScalerFunc {
+ F_BILINEAR = 0,
+ F_NEAREST,
+
+ F_NB,
+};
+
+typedef struct ScaleVulkanContext {
+ VulkanFilterContext vkctx;
+
+ int conv;
+ int initialized;
+ FFVkExecContext exec;
+ const VulkanSampler *sampler;
+
+ /* Shader updators, must be in the main filter struct */
+ VkDescriptorImageInfo input_images[3];
+ VkDescriptorImageInfo output_images[3];
+
+ enum ScalerFunc scaler;
+ char *output_format_string;
+ char *w_expr;
+ char *h_expr;
+} ScaleVulkanContext;
+
+static const char scale_bilinear[] = {
+ C(0, void scale_bilinear(int idx, ivec2 pos) )
+ C(0, { )
+ C(1, const vec2 npos = (vec2(pos) + 0.5f) / imageSize(output_img[idx]);)
+ C(1, imageStore(output_img[idx], pos, texture(input_img[idx], npos)); )
+ C(0, } )
+};
+
+static av_cold int init_filter(AVFilterContext *ctx, AVFrame *in)
+{
+ int err;
+ VkFilter sampler_mode;
+ ScaleVulkanContext *s = ctx->priv;
+
+ switch (s->scaler) {
+ case F_NEAREST:
+ sampler_mode = VK_FILTER_NEAREST;
+ break;
+ case F_BILINEAR:
+ sampler_mode = VK_FILTER_LINEAR;
+ break;
+ };
+
+ /* Create a sampler */
+ s->sampler = ff_vk_init_sampler(ctx, s->conv ? in : NULL, 0, sampler_mode);
+ if (!s->sampler)
+ return AVERROR_EXTERNAL;
+
+ { /* Create the shader */
+ SPIRVShader *shd = ff_vk_init_shader(ctx, "scale_compute",
+ VK_SHADER_STAGE_COMPUTE_BIT);
+ ff_vk_set_compute_shader_sizes(ctx, shd, (int [3]){ 16, 16, 1 });
+
+ VulkanDescriptorSetBinding desc_i[2] = {
+ {
+ .name = "input_img",
+ .type = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER,
+ .dimensions = 2,
+ .elems = s->conv ? 1 :
+ av_pix_fmt_count_planes(s->vkctx.input_format),
+ .stages = VK_SHADER_STAGE_COMPUTE_BIT,
+ .updater = s->input_images,
+ .samplers = DUP_SAMPLER_ARRAY4(s->sampler->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,
+ },
+ };
+
+ RET(ff_vk_add_descriptor_set(ctx, shd, desc_i, 2, 0)); /* set 0 */
+
+ GLSLD( scale_bilinear );
+ GLSLC(0, void main() );
+ GLSLC(0, { );
+ GLSLF(1, for (int i = 0; i < %i; i++) ,desc_i[1].elems);
+
+ switch (s->scaler) {
+ case F_NEAREST:
+ case F_BILINEAR:
+ GLSLC(2, scale_bilinear(i, ivec2(gl_GlobalInvocationID.xy)); );
+ break;
+ };
+
+ GLSLC(0, } );
+
+ RET(ff_vk_compile_shader(ctx, shd, "main"));
+ }
+
+ RET(ff_vk_init_pipeline_layout(ctx));
+
+ /* Execution context */
+ RET(ff_vk_create_exec_ctx(ctx, &s->exec,
+ s->vkctx.hwctx->queue_family_comp_index));
+
+ /* The pipeline */
+ RET(ff_vk_init_compute_pipeline(ctx));
+
+ s->initialized = 1;
+
+ return 0;
+
+fail:
+ return err;
+}
+
+static int process_frames(AVFilterContext *avctx, AVVkFrame *out, AVVkFrame *in)
+{
+ int i, err;
+ ScaleVulkanContext *s = avctx->priv;
+ int planes = av_pix_fmt_count_planes(s->vkctx.output_format);
+
+ VkCommandBufferBeginInfo cmd_start = {
+ .sType = VK_STRUCTURE_TYPE_COMMAND_BUFFER_BEGIN_INFO,
+ .flags = VK_COMMAND_BUFFER_USAGE_ONE_TIME_SUBMIT_BIT,
+ };
+
+ VkComponentMapping null_map = {
+ .r = VK_COMPONENT_SWIZZLE_IDENTITY,
+ .g = VK_COMPONENT_SWIZZLE_IDENTITY,
+ .b = VK_COMPONENT_SWIZZLE_IDENTITY,
+ .a = VK_COMPONENT_SWIZZLE_IDENTITY,
+ };
+
+ if (s->sampler->converting) { /* RGB */
+ RET(ff_vk_create_imageview(avctx, &s->input_images[0].imageView, in,
+ av_vkfmt_from_pixfmt(s->vkctx.input_format),
+ VK_IMAGE_ASPECT_COLOR_BIT,
+ null_map, &s->sampler->yuv_conv));
+ s->input_images[0].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+ } else {
+ for (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,
+ ff_vk_plane_rep_fmt(s->vkctx.input_format, i),
+ ff_vk_aspect_flags(s->vkctx.input_format, i),
+ null_map, NULL));
+ s->input_images[i].imageLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
+ }
+ }
+
+ for (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,
+ ff_vk_plane_rep_fmt(s->vkctx.output_format, i),
+ ff_vk_aspect_flags(s->vkctx.output_format, i),
+ null_map, NULL));
+ s->output_images[i].imageLayout = VK_IMAGE_LAYOUT_GENERAL;
+ }
+
+ ff_vk_update_descriptor_set(avctx, 0);
+
+ vkBeginCommandBuffer(s->exec.buf, &cmd_start);
+
+ {
+ VkImageMemoryBarrier bar[2] = {
+ {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .srcAccessMask = 0,
+ .dstAccessMask = VK_ACCESS_SHADER_READ_BIT,
+ .oldLayout = in->layout,
+ .newLayout = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .image = in->img,
+ .subresourceRange.aspectMask = ff_vk_aspect_flags(s->vkctx.input_format, -1),
+ .subresourceRange.levelCount = 1,
+ .subresourceRange.layerCount = 1,
+ },
+ {
+ .sType = VK_STRUCTURE_TYPE_IMAGE_MEMORY_BARRIER,
+ .srcAccessMask = 0,
+ .dstAccessMask = VK_ACCESS_SHADER_WRITE_BIT,
+ .oldLayout = out->layout,
+ .newLayout = VK_IMAGE_LAYOUT_GENERAL,
+ .srcQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .dstQueueFamilyIndex = VK_QUEUE_FAMILY_IGNORED,
+ .image = out->img,
+ .subresourceRange.aspectMask = ff_vk_aspect_flags(s->vkctx.output_format, -1),
+ .subresourceRange.levelCount = 1,
+ .subresourceRange.layerCount = 1,
+ },
+ };
+
+ vkCmdPipelineBarrier(s->exec.buf, VK_PIPELINE_STAGE_TOP_OF_PIPE_BIT,
+ VK_PIPELINE_STAGE_COMPUTE_SHADER_BIT, 0,
+ 0, NULL, 0, NULL, 2, bar);
+
+ in->layout = bar[0].newLayout;
+ in->access = bar[0].dstAccessMask;
+
+ out->layout = bar[1].newLayout;
+ out->access = bar[1].dstAccessMask;
+ }
+
+ vkCmdBindPipeline(s->exec.buf, VK_PIPELINE_BIND_POINT_COMPUTE, s->vkctx.pipeline);
+ vkCmdBindDescriptorSets(s->exec.buf, VK_PIPELINE_BIND_POINT_COMPUTE, s->vkctx.pipeline_layout, 0, s->vkctx.descriptor_sets_num, s->vkctx.desc_set, 0, 0);
+ vkCmdDispatch(s->exec.buf,
+ FFALIGN(s->vkctx.output_width, s->vkctx.shaders[0].local_size[0])/s->vkctx.shaders[0].local_size[0],
+ FFALIGN(s->vkctx.output_height, s->vkctx.shaders[0].local_size[1])/s->vkctx.shaders[0].local_size[1], 1);
+
+ vkEndCommandBuffer(s->exec.buf);
+
+ VkSubmitInfo s_info = {
+ .sType = VK_STRUCTURE_TYPE_SUBMIT_INFO,
+ .commandBufferCount = 1,
+ .pCommandBuffers = &s->exec.buf,
+ };
+
+ VkResult ret = vkQueueSubmit(s->exec.queue, 1, &s_info, s->exec.fence);
+ if (ret != VK_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Unable to submit command buffer: %s\n",
+ ff_vk_ret2str(ret));
+ return AVERROR_EXTERNAL;
+ } else {
+ vkWaitForFences(s->vkctx.hwctx->act_dev, 1, &s->exec.fence, VK_TRUE, UINT64_MAX);
+ vkResetFences(s->vkctx.hwctx->act_dev, 1, &s->exec.fence);
+ }
+
+fail:
+
+ for (i = 0; i < planes; i++) {
+ ff_vk_destroy_imageview(avctx, s->input_images[i].imageView);
+ ff_vk_destroy_imageview(avctx, s->output_images[i].imageView);
+ }
+
+ 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, (AVVkFrame *)out->data[0],
+ (AVVkFrame *) in->data[0]));
+
+ err = av_frame_copy_props(out, in);
+ if (err < 0)
+ goto fail;
+
+ 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;
+ const AVPixFmtDescriptor *desc;
+ 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->output_format_string)
+ s->vkctx.output_format = av_get_pix_fmt(s->output_format_string);
+
+ desc = av_pix_fmt_desc_get(s->vkctx.output_format);
+
+ if ((s->vkctx.input_format != s->vkctx.output_format) &&
+ !(desc->flags & AV_PIX_FMT_FLAG_RGB)) {
+ av_log(avctx, AV_LOG_WARNING, "Unsupported conversion %s -> %s! "
+ "Currently output format must either match input format or "
+ "must be some supported RGB format!\n",
+ av_get_pix_fmt_name(s->vkctx.input_format),
+ av_get_pix_fmt_name(s->vkctx.output_format));
+ return AVERROR_PATCHWELCOME;
+ }
+
+ desc = av_pix_fmt_desc_get(s->vkctx.input_format);
+
+ s->conv = !(desc->flags & AV_PIX_FMT_FLAG_RGB) &&
+ (s->vkctx.input_format != s->vkctx.output_format);
+
+ err = ff_vk_filter_config_output(outlink);
+ if (err < 0)
+ return err;
+
+ if (inlink->sample_aspect_ratio.num)
+ outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h * inlink->w, outlink->w * inlink->h}, inlink->sample_aspect_ratio);
+ else
+ outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
+
+ return 0;
+}
+
+static void scale_vulkan_uninit(AVFilterContext *avctx)
+{
+ ScaleVulkanContext *s = avctx->priv;
+
+ ff_vk_free_exec_ctx(avctx, &s->exec);
+ ff_vk_filter_uninit(avctx);
+
+ 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(output_format_string), AV_OPT_TYPE_STRING, .flags = FLAGS },
+ { 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,
+};
--
2.18.0.rc2.346.g013aa6912e
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