/*
* Copyright (c) 2018 Danil Iashchenko
*
* 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/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "libavutil/avstring.h"
#include "avfilter.h"
#include "internal.h"
#include "opencl.h"
#include "opencl_source.h"
#include "video.h"
typedef struct NeighborOpenCLContext {
OpenCLFilterContext ocf;
int initialised;
cl_kernel kernel;
cl_command_queue command_queue;
char *matrix_str[4];
cl_float threshold[4];
cl_int coordinates;
cl_mem coord;
} NeighborOpenCLContext;
static int neighbor_opencl_init(AVFilterContext *avctx)
{
NeighborOpenCLContext *ctx = avctx->priv;
const char *kernel_name;
cl_int cle;
int err;
err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_neighbor, 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);
if (!strcmp(avctx->filter->name, "erosion_opencl")){
kernel_name = "erosion_global";
} else if (!strcmp(avctx->filter->name, "dilation_opencl")){
kernel_name = "dilation_global";
}
ctx->kernel = clCreateKernel(ctx->ocf.program, kernel_name, &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 neighbor_opencl_make_filter_params(AVFilterContext *avctx)
{
NeighborOpenCLContext *ctx = avctx->priv;
cl_int matrix[9];
cl_mem buffer;
cl_int cle;
int i;
for (i = 0; i < 4; i++) {
ctx->threshold[i] /= 255.0;
}
matrix[4] = 0;
for (i = 0; i < 8; i++) {
if (ctx->coordinates & (1 << i)) {
matrix[i > 3 ? i + 1: i] = 1;
}
}
buffer = clCreateBuffer(ctx->ocf.hwctx->context,
CL_MEM_READ_ONLY |
CL_MEM_COPY_HOST_PTR |
CL_MEM_HOST_NO_ACCESS,
9 * sizeof(cl_int), matrix, &cle);
if (!buffer) {
av_log(avctx, AV_LOG_ERROR, "Failed to create matrix buffer: "
"%d.\n", cle);
return AVERROR(EIO);
}
ctx->coord = buffer;
return 0;
}
static int neighbor_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
{
AVFilterContext *avctx = inlink->dst;
AVFilterLink *outlink = avctx->outputs[0];
NeighborOpenCLContext *ctx = avctx->priv;
AVFrame *output = NULL;
cl_int cle;
size_t global_work[2];
cl_mem src, dst;
int err, p;
size_t origin[3] = {0, 0, 0};
size_t region[3] = {0, 0, 1};
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 = neighbor_opencl_init(avctx);
if (err < 0)
goto fail;
err = neighbor_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;
if (ctx->threshold[p] == 0) {
err = ff_opencl_filter_work_size_from_image(avctx, region, output, p, 0);
if (err < 0)
goto fail;
cle = clEnqueueCopyImage(ctx->command_queue, src, dst,
origin, origin, region, 0, NULL, NULL);
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to copy plane %d: %d.\n",
p, cle);
} else {
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_float, &ctx->threshold[p]);
CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_mem, &ctx->coord);
err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p, 0);
if (err < 0)
goto fail;
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, NULL,
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 neighbor_opencl_uninit(AVFilterContext *avctx)
{
NeighborOpenCLContext *ctx = avctx->priv;
cl_int cle;
clReleaseMemObject(ctx->coord);
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);
}
static const AVFilterPad neighbor_opencl_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = &neighbor_opencl_filter_frame,
.config_props = &ff_opencl_filter_config_input,
},
{ NULL }
};
static const AVFilterPad neighbor_opencl_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &ff_opencl_filter_config_output,
},
{ NULL }
};
#define OFFSET(x) offsetof(NeighborOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
#if CONFIG_EROSION_OPENCL_FILTER
static const AVOption erosion_opencl_options[] = {
{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "coordinates", "set coordinates", OFFSET(coordinates), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(erosion_opencl);
AVFilter ff_vf_erosion_opencl = {
.name = "erosion_opencl",
.description = NULL_IF_CONFIG_SMALL("Apply erosion effect"),
.priv_size = sizeof(NeighborOpenCLContext),
.priv_class = &erosion_opencl_class,
.init = &ff_opencl_filter_init,
.uninit = &neighbor_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = neighbor_opencl_inputs,
.outputs = neighbor_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};
#endif /* CONFIG_EROSION_OPENCL_FILTER */
#if CONFIG_DILATION_OPENCL_FILTER
static const AVOption dilation_opencl_options[] = {
{ "threshold0", "set threshold for 1st plane", OFFSET(threshold[0]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold1", "set threshold for 2nd plane", OFFSET(threshold[1]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold2", "set threshold for 3rd plane", OFFSET(threshold[2]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "threshold3", "set threshold for 4th plane", OFFSET(threshold[3]), AV_OPT_TYPE_FLOAT, {.dbl=65535.0}, 0.0, 65535, FLAGS },
{ "coordinates", "set coordinates", OFFSET(coordinates), AV_OPT_TYPE_INT, {.i64=255}, 0, 255, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(dilation_opencl);
AVFilter ff_vf_dilation_opencl = {
.name = "dilation_opencl",
.description = NULL_IF_CONFIG_SMALL("Apply dilation effect"),
.priv_size = sizeof(NeighborOpenCLContext),
.priv_class = &dilation_opencl_class,
.init = &ff_opencl_filter_init,
.uninit = &neighbor_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = neighbor_opencl_inputs,
.outputs = neighbor_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};
#endif /* CONFIG_DILATION_OPENCL_FILTER */