This source file includes following definitions.
- unsharp_opencl_init
- unsharp_opencl_make_filter_params
- unsharp_opencl_filter_frame
- unsharp_opencl_uninit
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "internal.h"
#include "opencl.h"
#include "opencl_source.h"
#include "video.h"
#define MAX_DIAMETER 23
typedef struct UnsharpOpenCLContext {
OpenCLFilterContext ocf;
int initialised;
cl_kernel kernel;
cl_command_queue command_queue;
float luma_size_x;
float luma_size_y;
float luma_amount;
float chroma_size_x;
float chroma_size_y;
float chroma_amount;
int global;
int nb_planes;
struct {
float blur_x[MAX_DIAMETER];
float blur_y[MAX_DIAMETER];
cl_mem matrix;
cl_mem coef_x;
cl_mem coef_y;
cl_int size_x;
cl_int size_y;
cl_float amount;
cl_float threshold;
} plane[4];
} UnsharpOpenCLContext;
static int unsharp_opencl_init(AVFilterContext *avctx)
{
UnsharpOpenCLContext *ctx = avctx->priv;
cl_int cle;
int err;
err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_unsharp, 1);
if (err < 0)
goto fail;
ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
ctx->ocf.hwctx->device_id,
0, &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
"command queue %d.\n", cle);
ctx->global = (ctx->luma_size_x > 17.0f ||
ctx->luma_size_y > 17.0f ||
ctx->chroma_size_x > 17.0f ||
ctx->chroma_size_y > 17.0f);
ctx->kernel = clCreateKernel(ctx->ocf.program,
ctx->global ? "unsharp_global"
: "unsharp_local", &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create kernel %d.\n", cle);
ctx->initialised = 1;
return 0;
fail:
if (ctx->command_queue)
clReleaseCommandQueue(ctx->command_queue);
if (ctx->kernel)
clReleaseKernel(ctx->kernel);
return err;
}
static int unsharp_opencl_make_filter_params(AVFilterContext *avctx)
{
UnsharpOpenCLContext *ctx = avctx->priv;
const AVPixFmtDescriptor *desc;
float *matrix;
double val, sum;
cl_int cle;
cl_mem buffer;
size_t matrix_bytes;
float diam_x, diam_y, amount;
int err, p, x, y, size_x, size_y;
desc = av_pix_fmt_desc_get(ctx->ocf.output_format);
ctx->nb_planes = 0;
for (p = 0; p < desc->nb_components; p++)
ctx->nb_planes = FFMAX(ctx->nb_planes, desc->comp[p].plane + 1);
for (p = 0; p < ctx->nb_planes; p++) {
if (p == 0 || (desc->flags & AV_PIX_FMT_FLAG_RGB)) {
diam_x = ctx->luma_size_x;
diam_y = ctx->luma_size_y;
amount = ctx->luma_amount;
} else {
diam_x = ctx->chroma_size_x;
diam_y = ctx->chroma_size_y;
amount = ctx->chroma_amount;
}
size_x = (int)ceil(diam_x) | 1;
size_y = (int)ceil(diam_y) | 1;
matrix_bytes = size_x * size_y * sizeof(float);
matrix = av_malloc(matrix_bytes);
if (!matrix) {
err = AVERROR(ENOMEM);
goto fail;
}
sum = 0.0;
for (x = 0; x < size_x; x++) {
double dx = (double)(x - size_x / 2) / diam_x;
sum += ctx->plane[p].blur_x[x] = exp(-16.0 * (dx * dx));
}
for (x = 0; x < size_x; x++)
ctx->plane[p].blur_x[x] /= sum;
sum = 0.0;
for (y = 0; y < size_y; y++) {
double dy = (double)(y - size_y / 2) / diam_y;
sum += ctx->plane[p].blur_y[y] = exp(-16.0 * (dy * dy));
}
for (y = 0; y < size_y; y++)
ctx->plane[p].blur_y[y] /= sum;
for (y = 0; y < size_y; y++) {
for (x = 0; x < size_x; x++) {
val = ctx->plane[p].blur_x[x] * ctx->plane[p].blur_y[y];
matrix[y * size_x + x] = val;
}
}
if (ctx->global) {
buffer = clCreateBuffer(ctx->ocf.hwctx->context,
CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR |
CL_MEM_HOST_NO_ACCESS,
matrix_bytes, matrix, &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create matrix buffer: "
"%d.\n", cle);
ctx->plane[p].matrix = buffer;
} else {
buffer = clCreateBuffer(ctx->ocf.hwctx->context,
CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR |
CL_MEM_HOST_NO_ACCESS,
sizeof(ctx->plane[p].blur_x),
ctx->plane[p].blur_x, &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create x-coef buffer: "
"%d.\n", cle);
ctx->plane[p].coef_x = buffer;
buffer = clCreateBuffer(ctx->ocf.hwctx->context,
CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR |
CL_MEM_HOST_NO_ACCESS,
sizeof(ctx->plane[p].blur_y),
ctx->plane[p].blur_y, &cle);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create y-coef buffer: "
"%d.\n", cle);
ctx->plane[p].coef_y = buffer;
}
av_freep(&matrix);
ctx->plane[p].size_x = size_x;
ctx->plane[p].size_y = size_y;
ctx->plane[p].amount = amount;
}
err = 0;
fail:
av_freep(&matrix);
return err;
}
static int unsharp_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
{
AVFilterContext *avctx = inlink->dst;
AVFilterLink *outlink = avctx->outputs[0];
UnsharpOpenCLContext *ctx = avctx->priv;
AVFrame *output = NULL;
cl_int cle;
size_t global_work[2];
size_t local_work[2];
cl_mem src, dst;
int err, p;
av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(input->format),
input->width, input->height, input->pts);
if (!input->hw_frames_ctx)
return AVERROR(EINVAL);
if (!ctx->initialised) {
err = unsharp_opencl_init(avctx);
if (err < 0)
goto fail;
err = unsharp_opencl_make_filter_params(avctx);
if (err < 0)
goto fail;
}
output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!output) {
err = AVERROR(ENOMEM);
goto fail;
}
for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
src = (cl_mem) input->data[p];
dst = (cl_mem)output->data[p];
if (!dst)
break;
CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_int, &ctx->plane[p].size_x);
CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_int, &ctx->plane[p].size_y);
CL_SET_KERNEL_ARG(ctx->kernel, 4, cl_float, &ctx->plane[p].amount);
if (ctx->global) {
CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].matrix);
} else {
CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].coef_x);
CL_SET_KERNEL_ARG(ctx->kernel, 6, cl_mem, &ctx->plane[p].coef_y);
}
err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p,
ctx->global ? 0 : 16);
if (err < 0)
goto fail;
local_work[0] = 16;
local_work[1] = 16;
av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
"(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
p, global_work[0], global_work[1]);
cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
global_work, ctx->global ? NULL : local_work,
0, NULL, NULL);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle);
}
cle = clFinish(ctx->command_queue);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
err = av_frame_copy_props(output, input);
if (err < 0)
goto fail;
av_frame_free(&input);
av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(output->format),
output->width, output->height, output->pts);
return ff_filter_frame(outlink, output);
fail:
clFinish(ctx->command_queue);
av_frame_free(&input);
av_frame_free(&output);
return err;
}
static av_cold void unsharp_opencl_uninit(AVFilterContext *avctx)
{
UnsharpOpenCLContext *ctx = avctx->priv;
cl_int cle;
int i;
for (i = 0; i < ctx->nb_planes; i++) {
if (ctx->plane[i].matrix)
clReleaseMemObject(ctx->plane[i].matrix);
if (ctx->plane[i].coef_x)
clReleaseMemObject(ctx->plane[i].coef_x);
if (ctx->plane[i].coef_y)
clReleaseMemObject(ctx->plane[i].coef_y);
}
if (ctx->kernel) {
cle = clReleaseKernel(ctx->kernel);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"kernel: %d.\n", cle);
}
if (ctx->command_queue) {
cle = clReleaseCommandQueue(ctx->command_queue);
if (cle != CL_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed to release "
"command queue: %d.\n", cle);
}
ff_opencl_filter_uninit(avctx);
}
#define OFFSET(x) offsetof(UnsharpOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption unsharp_opencl_options[] = {
{ "luma_msize_x", "Set luma mask horizontal diameter (pixels)",
OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "lx", "Set luma mask horizontal diameter (pixels)",
OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "luma_msize_y", "Set luma mask vertical diameter (pixels)",
OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "ly", "Set luma mask vertical diameter (pixels)",
OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "luma_amount", "Set luma amount (multiplier)",
OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
{ .dbl = 1.0 }, -10, 10, FLAGS },
{ "la", "Set luma amount (multiplier)",
OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
{ .dbl = 1.0 }, -10, 10, FLAGS },
{ "chroma_msize_x", "Set chroma mask horizontal diameter (pixels after subsampling)",
OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "cx", "Set chroma mask horizontal diameter (pixels after subsampling)",
OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "chroma_msize_y", "Set chroma mask vertical diameter (pixels after subsampling)",
OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "cy", "Set chroma mask vertical diameter (pixels after subsampling)",
OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
{ .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
{ "chroma_amount", "Set chroma amount (multiplier)",
OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
{ .dbl = 0.0 }, -10, 10, FLAGS },
{ "ca", "Set chroma amount (multiplier)",
OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
{ .dbl = 0.0 }, -10, 10, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(unsharp_opencl);
static const AVFilterPad unsharp_opencl_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = &unsharp_opencl_filter_frame,
.config_props = &ff_opencl_filter_config_input,
},
{ NULL }
};
static const AVFilterPad unsharp_opencl_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &ff_opencl_filter_config_output,
},
{ NULL }
};
AVFilter ff_vf_unsharp_opencl = {
.name = "unsharp_opencl",
.description = NULL_IF_CONFIG_SMALL("Apply unsharp mask to input video"),
.priv_size = sizeof(UnsharpOpenCLContext),
.priv_class = &unsharp_opencl_class,
.init = &ff_opencl_filter_init,
.uninit = &unsharp_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = unsharp_opencl_inputs,
.outputs = unsharp_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};