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