2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/common.h"
20 #include "libavutil/imgutils.h"
21 #include "libavutil/mem.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
28 #include "opencl_source.h"
31 #define MAX_DIAMETER 23
33 typedef struct UnsharpOpenCLContext {
34 OpenCLFilterContext ocf;
38 cl_command_queue command_queue;
51 float blur_x[MAX_DIAMETER];
52 float blur_y[MAX_DIAMETER];
63 } UnsharpOpenCLContext;
66 static int unsharp_opencl_init(AVFilterContext *avctx)
68 UnsharpOpenCLContext *ctx = avctx->priv;
72 err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_unsharp, 1);
76 ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
77 ctx->ocf.hwctx->device_id,
79 if (!ctx->command_queue) {
80 av_log(avctx, AV_LOG_ERROR, "Failed to create OpenCL "
81 "command queue: %d.\n", cle);
86 // Use global kernel if mask size will be too big for the local store..
87 ctx->global = (ctx->luma_size_x > 17.0f ||
88 ctx->luma_size_y > 17.0f ||
89 ctx->chroma_size_x > 17.0f ||
90 ctx->chroma_size_y > 17.0f);
92 ctx->kernel = clCreateKernel(ctx->ocf.program,
93 ctx->global ? "unsharp_global"
94 : "unsharp_local", &cle);
96 av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
101 ctx->initialised = 1;
105 if (ctx->command_queue)
106 clReleaseCommandQueue(ctx->command_queue);
108 clReleaseKernel(ctx->kernel);
112 static int unsharp_opencl_make_filter_params(AVFilterContext *avctx)
114 UnsharpOpenCLContext *ctx = avctx->priv;
115 const AVPixFmtDescriptor *desc;
121 float diam_x, diam_y, amount;
122 int err, p, x, y, size_x, size_y;
124 desc = av_pix_fmt_desc_get(ctx->ocf.output_format);
127 for (p = 0; p < desc->nb_components; p++)
128 ctx->nb_planes = FFMAX(ctx->nb_planes, desc->comp[p].plane + 1);
130 for (p = 0; p < ctx->nb_planes; p++) {
131 if (p == 0 || (desc->flags & AV_PIX_FMT_FLAG_RGB)) {
132 diam_x = ctx->luma_size_x;
133 diam_y = ctx->luma_size_y;
134 amount = ctx->luma_amount;
136 diam_x = ctx->chroma_size_x;
137 diam_y = ctx->chroma_size_y;
138 amount = ctx->chroma_amount;
140 size_x = (int)ceil(diam_x) | 1;
141 size_y = (int)ceil(diam_y) | 1;
142 matrix_bytes = size_x * size_y * sizeof(float);
144 matrix = av_malloc(matrix_bytes);
146 err = AVERROR(ENOMEM);
151 for (x = 0; x < size_x; x++) {
152 double dx = (double)(x - size_x / 2) / diam_x;
153 sum += ctx->plane[p].blur_x[x] = exp(-16.0 * (dx * dx));
155 for (x = 0; x < size_x; x++)
156 ctx->plane[p].blur_x[x] /= sum;
159 for (y = 0; y < size_y; y++) {
160 double dy = (double)(y - size_y / 2) / diam_y;
161 sum += ctx->plane[p].blur_y[y] = exp(-16.0 * (dy * dy));
163 for (y = 0; y < size_y; y++)
164 ctx->plane[p].blur_y[y] /= sum;
166 for (y = 0; y < size_y; y++) {
167 for (x = 0; x < size_x; x++) {
168 val = ctx->plane[p].blur_x[x] * ctx->plane[p].blur_y[y];
169 matrix[y * size_x + x] = val;
174 buffer = clCreateBuffer(ctx->ocf.hwctx->context,
176 CL_MEM_COPY_HOST_PTR |
177 CL_MEM_HOST_NO_ACCESS,
178 matrix_bytes, matrix, &cle);
180 av_log(avctx, AV_LOG_ERROR, "Failed to create matrix buffer: "
185 ctx->plane[p].matrix = buffer;
187 buffer = clCreateBuffer(ctx->ocf.hwctx->context,
189 CL_MEM_COPY_HOST_PTR |
190 CL_MEM_HOST_NO_ACCESS,
191 sizeof(ctx->plane[p].blur_x),
192 ctx->plane[p].blur_x, &cle);
194 av_log(avctx, AV_LOG_ERROR, "Failed to create x-coef buffer: "
199 ctx->plane[p].coef_x = buffer;
201 buffer = clCreateBuffer(ctx->ocf.hwctx->context,
203 CL_MEM_COPY_HOST_PTR |
204 CL_MEM_HOST_NO_ACCESS,
205 sizeof(ctx->plane[p].blur_y),
206 ctx->plane[p].blur_y, &cle);
208 av_log(avctx, AV_LOG_ERROR, "Failed to create y-coef buffer: "
213 ctx->plane[p].coef_y = buffer;
218 ctx->plane[p].size_x = size_x;
219 ctx->plane[p].size_y = size_y;
220 ctx->plane[p].amount = amount;
229 static int unsharp_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
231 AVFilterContext *avctx = inlink->dst;
232 AVFilterLink *outlink = avctx->outputs[0];
233 UnsharpOpenCLContext *ctx = avctx->priv;
234 AVFrame *output = NULL;
236 size_t global_work[2];
237 size_t local_work[2];
241 av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
242 av_get_pix_fmt_name(input->format),
243 input->width, input->height, input->pts);
245 if (!input->hw_frames_ctx)
246 return AVERROR(EINVAL);
248 if (!ctx->initialised) {
249 err = unsharp_opencl_init(avctx);
253 err = unsharp_opencl_make_filter_params(avctx);
258 output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
260 err = AVERROR(ENOMEM);
264 for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
265 src = (cl_mem) input->data[p];
266 dst = (cl_mem)output->data[p];
271 CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
272 CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
273 CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_int, &ctx->plane[p].size_x);
274 CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_int, &ctx->plane[p].size_y);
275 CL_SET_KERNEL_ARG(ctx->kernel, 4, cl_float, &ctx->plane[p].amount);
278 CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].matrix);
280 CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].coef_x);
281 CL_SET_KERNEL_ARG(ctx->kernel, 6, cl_mem, &ctx->plane[p].coef_y);
284 err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p,
285 ctx->global ? 0 : 16);
292 av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
293 "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
294 p, global_work[0], global_work[1]);
296 cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
297 global_work, ctx->global ? NULL : local_work,
299 if (cle != CL_SUCCESS) {
300 av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
307 cle = clFinish(ctx->command_queue);
308 if (cle != CL_SUCCESS) {
309 av_log(avctx, AV_LOG_ERROR, "Failed to finish command queue: %d.\n",
315 err = av_frame_copy_props(output, input);
319 av_frame_free(&input);
321 av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
322 av_get_pix_fmt_name(output->format),
323 output->width, output->height, output->pts);
325 return ff_filter_frame(outlink, output);
328 clFinish(ctx->command_queue);
329 av_frame_free(&input);
330 av_frame_free(&output);
334 static av_cold void unsharp_opencl_uninit(AVFilterContext *avctx)
336 UnsharpOpenCLContext *ctx = avctx->priv;
340 for (i = 0; i < ctx->nb_planes; i++) {
341 if (ctx->plane[i].matrix)
342 clReleaseMemObject(ctx->plane[i].matrix);
343 if (ctx->plane[i].coef_x)
344 clReleaseMemObject(ctx->plane[i].coef_x);
345 if (ctx->plane[i].coef_y)
346 clReleaseMemObject(ctx->plane[i].coef_y);
350 cle = clReleaseKernel(ctx->kernel);
351 if (cle != CL_SUCCESS)
352 av_log(avctx, AV_LOG_ERROR, "Failed to release "
353 "kernel: %d.\n", cle);
356 if (ctx->command_queue) {
357 cle = clReleaseCommandQueue(ctx->command_queue);
358 if (cle != CL_SUCCESS)
359 av_log(avctx, AV_LOG_ERROR, "Failed to release "
360 "command queue: %d.\n", cle);
363 ff_opencl_filter_uninit(avctx);
366 #define OFFSET(x) offsetof(UnsharpOpenCLContext, x)
367 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
368 static const AVOption unsharp_opencl_options[] = {
369 { "luma_msize_x", "Set luma mask horizontal diameter (pixels)",
370 OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
371 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
372 { "lx", "Set luma mask horizontal diameter (pixels)",
373 OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
374 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
375 { "luma_msize_y", "Set luma mask vertical diameter (pixels)",
376 OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
377 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
378 { "ly", "Set luma mask vertical diameter (pixels)",
379 OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
380 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
381 { "luma_amount", "Set luma amount (multiplier)",
382 OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
383 { .dbl = 1.0 }, -10, 10, FLAGS },
384 { "la", "Set luma amount (multiplier)",
385 OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
386 { .dbl = 1.0 }, -10, 10, FLAGS },
388 { "chroma_msize_x", "Set chroma mask horizontal diameter (pixels after subsampling)",
389 OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
390 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
391 { "cx", "Set chroma mask horizontal diameter (pixels after subsampling)",
392 OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
393 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
394 { "chroma_msize_y", "Set chroma mask vertical diameter (pixels after subsampling)",
395 OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
396 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
397 { "cy", "Set chroma mask vertical diameter (pixels after subsampling)",
398 OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
399 { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
400 { "chroma_amount", "Set chroma amount (multiplier)",
401 OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
402 { .dbl = 0.0 }, -10, 10, FLAGS },
403 { "ca", "Set chroma amount (multiplier)",
404 OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
405 { .dbl = 0.0 }, -10, 10, FLAGS },
410 AVFILTER_DEFINE_CLASS(unsharp_opencl);
412 static const AVFilterPad unsharp_opencl_inputs[] = {
415 .type = AVMEDIA_TYPE_VIDEO,
416 .filter_frame = &unsharp_opencl_filter_frame,
417 .config_props = &ff_opencl_filter_config_input,
422 static const AVFilterPad unsharp_opencl_outputs[] = {
425 .type = AVMEDIA_TYPE_VIDEO,
426 .config_props = &ff_opencl_filter_config_output,
431 AVFilter ff_vf_unsharp_opencl = {
432 .name = "unsharp_opencl",
433 .description = NULL_IF_CONFIG_SMALL("Apply unsharp mask to input video"),
434 .priv_size = sizeof(UnsharpOpenCLContext),
435 .priv_class = &unsharp_opencl_class,
436 .init = &ff_opencl_filter_init,
437 .uninit = &unsharp_opencl_uninit,
438 .query_formats = &ff_opencl_filter_query_formats,
439 .inputs = unsharp_opencl_inputs,
440 .outputs = unsharp_opencl_outputs,
441 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,