/*
* 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 "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);
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;
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->initialized = 1;
return 0;
fail:
return err;
}
static int process_frames(AVFilterContext *avctx, AVFrame *out_f, AVFrame *in_f)
{
int err = 0;
VkCommandBuffer cmd_buf;
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;
/* 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 < av_pix_fmt_count_planes(s->vkctx.input_format); i++) {
RET(ff_vk_create_imageview(avctx, s->exec, &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->exec, &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);
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(cmd_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(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, 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;
return err;
fail:
ff_vk_discard_exec_deps(avctx, s->exec);
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,
};