From 5423fe29da6bbf28f5253800cace133ac8343a7e Mon Sep 17 00:00:00 2001 From: Danil Iashchenko Date: Sun, 12 Aug 2018 23:12:08 +0300 Subject: lavfi: add erosion_opencl, dilation_opencl filters Add erosion_opencl, dilation_opencl filters. Behave like existing erosion and dilation filters. --- libavfilter/vf_neighbor_opencl.c | 318 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 318 insertions(+) create mode 100644 libavfilter/vf_neighbor_opencl.c (limited to 'libavfilter/vf_neighbor_opencl.c') diff --git a/libavfilter/vf_neighbor_opencl.c b/libavfilter/vf_neighbor_opencl.c new file mode 100644 index 0000000000..fb40132d95 --- /dev/null +++ b/libavfilter/vf_neighbor_opencl.c @@ -0,0 +1,318 @@ +/* + * 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 */ -- cgit v1.2.3