2019-04-12 08:29:03 +00:00
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/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <float.h>
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#include "libavutil/avassert.h"
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#include "libavutil/common.h"
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#include "libavutil/imgutils.h"
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#include "libavutil/mem.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "internal.h"
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#include "opencl.h"
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#include "opencl_source.h"
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#include "video.h"
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// TODO:
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// the integral image may overflow 32bit, consider using 64bit
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static const enum AVPixelFormat supported_formats[] = {
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P,
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AV_PIX_FMT_GBRP,
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};
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static int is_format_supported(enum AVPixelFormat fmt)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
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if (supported_formats[i] == fmt)
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return 1;
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return 0;
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}
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typedef struct NLMeansOpenCLContext {
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OpenCLFilterContext ocf;
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int initialised;
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cl_kernel vert_kernel;
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cl_kernel horiz_kernel;
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cl_kernel accum_kernel;
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cl_kernel average_kernel;
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cl_mem integral_img;
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cl_mem weight;
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cl_mem sum;
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cl_mem overflow; // overflow in integral image?
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double sigma;
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float h;
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int chroma_w;
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int chroma_h;
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int patch_size;
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int patch_size_uv;
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int research_size;
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int research_size_uv;
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cl_command_queue command_queue;
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} NLMeansOpenCLContext;
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static int nlmeans_opencl_init(AVFilterContext *avctx, int width, int height)
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{
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NLMeansOpenCLContext *ctx = avctx->priv;
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cl_int cle;
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int err;
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int weight_buf_size = width * height * sizeof(float);
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ctx->h = ctx->sigma * 10;
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if (!(ctx->research_size & 1)) {
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ctx->research_size |= 1;
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av_log(avctx, AV_LOG_WARNING,
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"research_size should be odd, set to %d",
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ctx->research_size);
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}
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if (!(ctx->patch_size & 1)) {
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ctx->patch_size |= 1;
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av_log(avctx, AV_LOG_WARNING,
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"patch_size should be odd, set to %d",
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ctx->patch_size);
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}
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if (!ctx->research_size_uv)
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ctx->research_size_uv = ctx->research_size;
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if (!ctx->patch_size_uv)
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ctx->patch_size_uv = ctx->patch_size;
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err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_nlmeans, 1);
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if (err < 0)
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goto fail;
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ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
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ctx->ocf.hwctx->device_id,
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0, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
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"command queue %d.\n", cle);
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ctx->vert_kernel = clCreateKernel(ctx->ocf.program,
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"vert_sum", &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"vert_sum kernel %d.\n", cle);
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ctx->horiz_kernel = clCreateKernel(ctx->ocf.program,
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"horiz_sum", &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"horiz_sum kernel %d.\n", cle);
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ctx->accum_kernel = clCreateKernel(ctx->ocf.program,
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"weight_accum", &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"accum kernel %d.\n", cle);
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ctx->average_kernel = clCreateKernel(ctx->ocf.program,
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"average", &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"average kernel %d.\n", cle);
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ctx->integral_img = clCreateBuffer(ctx->ocf.hwctx->context, 0,
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4 * width * height * sizeof(cl_int),
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NULL, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"integral image %d.\n", cle);
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ctx->weight = clCreateBuffer(ctx->ocf.hwctx->context, 0,
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weight_buf_size, NULL, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"weight buffer %d.\n", cle);
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ctx->sum = clCreateBuffer(ctx->ocf.hwctx->context, 0,
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weight_buf_size, NULL, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"sum buffer %d.\n", cle);
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ctx->overflow = clCreateBuffer(ctx->ocf.hwctx->context, 0,
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sizeof(cl_int), NULL, &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
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"overflow buffer %d.\n", cle);
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ctx->initialised = 1;
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return 0;
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fail:
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CL_RELEASE_KERNEL(ctx->vert_kernel);
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CL_RELEASE_KERNEL(ctx->horiz_kernel);
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CL_RELEASE_KERNEL(ctx->accum_kernel);
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CL_RELEASE_KERNEL(ctx->average_kernel);
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CL_RELEASE_MEMORY(ctx->integral_img);
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CL_RELEASE_MEMORY(ctx->weight);
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CL_RELEASE_MEMORY(ctx->sum);
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CL_RELEASE_MEMORY(ctx->overflow);
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CL_RELEASE_QUEUE(ctx->command_queue);
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return err;
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}
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static int nlmeans_plane(AVFilterContext *avctx, cl_mem dst, cl_mem src,
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cl_int width, cl_int height, cl_int p, cl_int r)
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{
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NLMeansOpenCLContext *ctx = avctx->priv;
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const float zero = 0.0f;
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const size_t worksize1[] = {height};
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const size_t worksize2[] = {width};
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const size_t worksize3[2] = {width, height};
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int i, dx, dy, err = 0, weight_buf_size;
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cl_int cle;
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int nb_pixel, *tmp = NULL, idx = 0;
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cl_int *dxdy = NULL;
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weight_buf_size = width * height * sizeof(float);
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cle = clEnqueueFillBuffer(ctx->command_queue, ctx->weight,
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&zero, sizeof(float), 0, weight_buf_size,
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0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to fill weight buffer: %d.\n",
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cle);
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cle = clEnqueueFillBuffer(ctx->command_queue, ctx->sum,
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&zero, sizeof(float), 0, weight_buf_size,
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0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to fill sum buffer: %d.\n",
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cle);
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nb_pixel = (2 * r + 1) * (2 * r + 1) - 1;
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dxdy = av_malloc(nb_pixel * 2 * sizeof(cl_int));
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tmp = av_malloc(nb_pixel * 2 * sizeof(int));
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if (!dxdy || !tmp)
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goto fail;
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for (dx = -r; dx <= r; dx++) {
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for (dy = -r; dy <= r; dy++) {
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if (dx || dy) {
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tmp[idx++] = dx;
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tmp[idx++] = dy;
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}
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}
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}
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// repack dx/dy seperately, as we want to do four pairs of dx/dy in a batch
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for (i = 0; i < nb_pixel / 4; i++) {
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dxdy[i * 8] = tmp[i * 8]; // dx0
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dxdy[i * 8 + 1] = tmp[i * 8 + 2]; // dx1
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dxdy[i * 8 + 2] = tmp[i * 8 + 4]; // dx2
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dxdy[i * 8 + 3] = tmp[i * 8 + 6]; // dx3
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dxdy[i * 8 + 4] = tmp[i * 8 + 1]; // dy0
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dxdy[i * 8 + 5] = tmp[i * 8 + 3]; // dy1
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dxdy[i * 8 + 6] = tmp[i * 8 + 5]; // dy2
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dxdy[i * 8 + 7] = tmp[i * 8 + 7]; // dy3
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}
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av_freep(&tmp);
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for (i = 0; i < nb_pixel / 4; i++) {
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cl_int *dx_cur = dxdy + 8 * i;
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cl_int *dy_cur = dxdy + 8 * i + 4;
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// horizontal pass
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// integral(x,y) = sum([u(v,y) - u(v+dx,y+dy)]^2) for v in [0, x]
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 0, cl_mem, &ctx->integral_img);
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 1, cl_mem, &src);
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 2, cl_int, &width);
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 3, cl_int, &height);
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 4, cl_int4, dx_cur);
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CL_SET_KERNEL_ARG(ctx->horiz_kernel, 5, cl_int4, dy_cur);
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cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->horiz_kernel, 1,
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NULL, worksize1, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue horiz_kernel: %d.\n",
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cle);
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// vertical pass
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// integral(x, y) = sum(integral(x, v)) for v in [0, y]
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CL_SET_KERNEL_ARG(ctx->vert_kernel, 0, cl_mem, &ctx->integral_img);
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CL_SET_KERNEL_ARG(ctx->vert_kernel, 1, cl_mem, &ctx->overflow);
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CL_SET_KERNEL_ARG(ctx->vert_kernel, 2, cl_int, &width);
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CL_SET_KERNEL_ARG(ctx->vert_kernel, 3, cl_int, &height);
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cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->vert_kernel,
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1, NULL, worksize2, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue vert_kernel: %d.\n",
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cle);
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// accumulate weights
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 0, cl_mem, &ctx->sum);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 1, cl_mem, &ctx->weight);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 2, cl_mem, &ctx->integral_img);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 3, cl_mem, &src);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 4, cl_int, &width);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 5, cl_int, &height);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 6, cl_int, &p);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 7, cl_float, &ctx->h);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 8, cl_int4, dx_cur);
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CL_SET_KERNEL_ARG(ctx->accum_kernel, 9, cl_int4, dy_cur);
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cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->accum_kernel,
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2, NULL, worksize3, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle);
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}
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av_freep(&dxdy);
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// average
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CL_SET_KERNEL_ARG(ctx->average_kernel, 0, cl_mem, &dst);
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CL_SET_KERNEL_ARG(ctx->average_kernel, 1, cl_mem, &src);
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CL_SET_KERNEL_ARG(ctx->average_kernel, 2, cl_mem, &ctx->sum);
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CL_SET_KERNEL_ARG(ctx->average_kernel, 3, cl_mem, &ctx->weight);
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cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->average_kernel, 2,
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NULL, worksize3, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue average kernel: %d.\n",
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cle);
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cle = clFlush(ctx->command_queue);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to flush command queue: %d.\n", cle);
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fail:
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if (tmp)
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av_freep(&tmp);
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if (dxdy)
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av_freep(&dxdy);
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return err;
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}
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static int nlmeans_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
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{
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AVFilterContext *avctx = inlink->dst;
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AVFilterLink *outlink = avctx->outputs[0];
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NLMeansOpenCLContext *ctx = avctx->priv;
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AVFrame *output = NULL;
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AVHWFramesContext *input_frames_ctx;
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const AVPixFmtDescriptor *desc;
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enum AVPixelFormat in_format;
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cl_mem src, dst;
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const cl_int zero = 0;
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int w, h, err, cle, overflow, p, patch, research;
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av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
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av_get_pix_fmt_name(input->format),
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input->width, input->height, input->pts);
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if (!input->hw_frames_ctx)
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return AVERROR(EINVAL);
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input_frames_ctx = (AVHWFramesContext*)input->hw_frames_ctx->data;
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in_format = input_frames_ctx->sw_format;
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output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!output) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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err = av_frame_copy_props(output, input);
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if (err < 0)
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goto fail;
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if (!ctx->initialised) {
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desc = av_pix_fmt_desc_get(in_format);
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if (!is_format_supported(in_format)) {
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err = AVERROR(EINVAL);
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av_log(avctx, AV_LOG_ERROR, "input format %s not supported\n",
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av_get_pix_fmt_name(in_format));
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goto fail;
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}
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ctx->chroma_w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
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ctx->chroma_h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
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err = nlmeans_opencl_init(avctx, inlink->w, inlink->h);
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|
|
|
if (err < 0)
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
|
|
|
|
cle = clEnqueueWriteBuffer(ctx->command_queue, ctx->overflow, CL_FALSE,
|
|
|
|
0, sizeof(cl_int), &zero, 0, NULL, NULL);
|
|
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to initialize overflow"
|
|
|
|
"detection buffer %d.\n", cle);
|
|
|
|
|
|
|
|
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;
|
|
|
|
av_assert0(src);
|
|
|
|
w = p ? ctx->chroma_w : inlink->w;
|
|
|
|
h = p ? ctx->chroma_h : inlink->h;
|
|
|
|
patch = (p ? ctx->patch_size_uv : ctx->patch_size) / 2;
|
|
|
|
research = (p ? ctx->research_size_uv : ctx->research_size) / 2;
|
|
|
|
err = nlmeans_plane(avctx, dst, src, w, h, patch, research);
|
|
|
|
if (err < 0)
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
// overflow occurred?
|
|
|
|
cle = clEnqueueReadBuffer(ctx->command_queue, ctx->overflow, CL_FALSE,
|
|
|
|
0, sizeof(cl_int), &overflow, 0, NULL, NULL);
|
|
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to read overflow: %d.\n", cle);
|
|
|
|
|
|
|
|
cle = clFinish(ctx->command_queue);
|
|
|
|
CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish kernel: %d.\n", cle);
|
|
|
|
|
|
|
|
if (overflow > 0)
|
|
|
|
av_log(avctx, AV_LOG_ERROR, "integral image overflow %d\n", overflow);
|
|
|
|
|
|
|
|
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 nlmeans_opencl_uninit(AVFilterContext *avctx)
|
|
|
|
{
|
|
|
|
NLMeansOpenCLContext *ctx = avctx->priv;
|
|
|
|
cl_int cle;
|
|
|
|
|
|
|
|
CL_RELEASE_KERNEL(ctx->vert_kernel);
|
|
|
|
CL_RELEASE_KERNEL(ctx->horiz_kernel);
|
|
|
|
CL_RELEASE_KERNEL(ctx->accum_kernel);
|
|
|
|
CL_RELEASE_KERNEL(ctx->average_kernel);
|
|
|
|
|
|
|
|
CL_RELEASE_MEMORY(ctx->integral_img);
|
|
|
|
CL_RELEASE_MEMORY(ctx->weight);
|
|
|
|
CL_RELEASE_MEMORY(ctx->sum);
|
|
|
|
CL_RELEASE_MEMORY(ctx->overflow);
|
|
|
|
|
|
|
|
CL_RELEASE_QUEUE(ctx->command_queue);
|
|
|
|
|
|
|
|
ff_opencl_filter_uninit(avctx);
|
|
|
|
}
|
|
|
|
|
|
|
|
#define OFFSET(x) offsetof(NLMeansOpenCLContext, x)
|
|
|
|
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
|
|
|
|
static const AVOption nlmeans_opencl_options[] = {
|
|
|
|
{ "s", "denoising strength", OFFSET(sigma), AV_OPT_TYPE_DOUBLE, { .dbl = 1.0 }, 1.0, 30.0, FLAGS },
|
|
|
|
{ "p", "patch size", OFFSET(patch_size), AV_OPT_TYPE_INT, { .i64 = 2*3+1 }, 0, 99, FLAGS },
|
|
|
|
{ "pc", "patch size for chroma planes", OFFSET(patch_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS },
|
|
|
|
{ "r", "research window", OFFSET(research_size), AV_OPT_TYPE_INT, { .i64 = 7*2+1 }, 0, 99, FLAGS },
|
|
|
|
{ "rc", "research window for chroma planes", OFFSET(research_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS },
|
|
|
|
{ NULL }
|
|
|
|
};
|
|
|
|
|
|
|
|
AVFILTER_DEFINE_CLASS(nlmeans_opencl);
|
|
|
|
|
|
|
|
static const AVFilterPad nlmeans_opencl_inputs[] = {
|
|
|
|
{
|
|
|
|
.name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.filter_frame = &nlmeans_opencl_filter_frame,
|
|
|
|
.config_props = &ff_opencl_filter_config_input,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
|
|
|
static const AVFilterPad nlmeans_opencl_outputs[] = {
|
|
|
|
{
|
|
|
|
.name = "default",
|
|
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
|
|
.config_props = &ff_opencl_filter_config_output,
|
|
|
|
},
|
|
|
|
};
|
|
|
|
|
2021-04-19 16:33:56 +00:00
|
|
|
const AVFilter ff_vf_nlmeans_opencl = {
|
2019-04-12 08:29:03 +00:00
|
|
|
.name = "nlmeans_opencl",
|
|
|
|
.description = NULL_IF_CONFIG_SMALL("Non-local means denoiser through OpenCL"),
|
|
|
|
.priv_size = sizeof(NLMeansOpenCLContext),
|
|
|
|
.priv_class = &nlmeans_opencl_class,
|
|
|
|
.init = &ff_opencl_filter_init,
|
|
|
|
.uninit = &nlmeans_opencl_uninit,
|
2021-08-12 11:05:31 +00:00
|
|
|
FILTER_INPUTS(nlmeans_opencl_inputs),
|
|
|
|
FILTER_OUTPUTS(nlmeans_opencl_outputs),
|
2021-09-27 22:27:44 +00:00
|
|
|
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_OPENCL),
|
2019-04-12 08:29:03 +00:00
|
|
|
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
|
|
|
|
};
|