FFmpeg  4.2.1
vf_nlmeans_opencl.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
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17  */
18 #include <float.h>
19 
20 #include "libavutil/avassert.h"
21 #include "libavutil/common.h"
22 #include "libavutil/imgutils.h"
23 #include "libavutil/mem.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 
27 #include "avfilter.h"
28 #include "internal.h"
29 #include "opencl.h"
30 #include "opencl_source.h"
31 #include "video.h"
32 
33 // TODO:
34 // the integral image may overflow 32bit, consider using 64bit
35 
36 static const enum AVPixelFormat supported_formats[] = {
40 };
41 
43 {
44  int i;
45 
46  for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
47  if (supported_formats[i] == fmt)
48  return 1;
49  return 0;
50 }
51 
52 typedef struct NLMeansOpenCLContext {
55  cl_kernel vert_kernel;
56  cl_kernel horiz_kernel;
57  cl_kernel accum_kernel;
58  cl_kernel average_kernel;
59  cl_mem integral_img;
60  cl_mem weight;
61  cl_mem sum;
62  cl_mem overflow; // overflow in integral image?
63  double sigma;
64  float h;
65  int chroma_w;
66  int chroma_h;
71  cl_command_queue command_queue;
73 
74 static int nlmeans_opencl_init(AVFilterContext *avctx, int width, int height)
75 {
76  NLMeansOpenCLContext *ctx = avctx->priv;
77  cl_int cle;
78  int err;
79  int weight_buf_size = width * height * sizeof(float);
80 
81  ctx->h = ctx->sigma * 10;
82  if (!(ctx->research_size & 1)) {
83  ctx->research_size |= 1;
84  av_log(avctx, AV_LOG_WARNING,
85  "research_size should be odd, set to %d",
86  ctx->research_size);
87  }
88 
89  if (!(ctx->patch_size & 1)) {
90  ctx->patch_size |= 1;
91  av_log(avctx, AV_LOG_WARNING,
92  "patch_size should be odd, set to %d",
93  ctx->patch_size);
94  }
95 
96  if (!ctx->research_size_uv)
97  ctx->research_size_uv = ctx->research_size;
98  if (!ctx->patch_size_uv)
99  ctx->patch_size_uv = ctx->patch_size;
100 
102  if (err < 0)
103  goto fail;
104 
105  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
106  ctx->ocf.hwctx->device_id,
107  0, &cle);
108  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
109  "command queue %d.\n", cle);
110 
111  ctx->vert_kernel = clCreateKernel(ctx->ocf.program,
112  "vert_sum", &cle);
113  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
114  "vert_sum kernel %d.\n", cle);
115 
116  ctx->horiz_kernel = clCreateKernel(ctx->ocf.program,
117  "horiz_sum", &cle);
118  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
119  "horiz_sum kernel %d.\n", cle);
120 
121  ctx->accum_kernel = clCreateKernel(ctx->ocf.program,
122  "weight_accum", &cle);
123  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
124  "accum kernel %d.\n", cle);
125 
126  ctx->average_kernel = clCreateKernel(ctx->ocf.program,
127  "average", &cle);
128  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
129  "average kernel %d.\n", cle);
130 
131  ctx->integral_img = clCreateBuffer(ctx->ocf.hwctx->context, 0,
132  4 * width * height * sizeof(cl_int),
133  NULL, &cle);
134  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
135  "integral image %d.\n", cle);
136 
137  ctx->weight = clCreateBuffer(ctx->ocf.hwctx->context, 0,
138  weight_buf_size, NULL, &cle);
139  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
140  "weight buffer %d.\n", cle);
141 
142  ctx->sum = clCreateBuffer(ctx->ocf.hwctx->context, 0,
143  weight_buf_size, NULL, &cle);
144  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
145  "sum buffer %d.\n", cle);
146 
147  ctx->overflow = clCreateBuffer(ctx->ocf.hwctx->context, 0,
148  sizeof(cl_int), NULL, &cle);
149  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
150  "overflow buffer %d.\n", cle);
151 
152  ctx->initialised = 1;
153  return 0;
154 
155 fail:
160 
163  CL_RELEASE_MEMORY(ctx->sum);
165 
167  return err;
168 }
169 
170 static int nlmeans_plane(AVFilterContext *avctx, cl_mem dst, cl_mem src,
171  cl_int width, cl_int height, cl_int p, cl_int r)
172 {
173  NLMeansOpenCLContext *ctx = avctx->priv;
174  const float zero = 0.0f;
175  const size_t worksize1[] = {height};
176  const size_t worksize2[] = {width};
177  const size_t worksize3[2] = {width, height};
178  int i, dx, dy, err = 0, weight_buf_size;
179  cl_int cle;
180  int nb_pixel, *tmp = NULL, idx = 0;
181  cl_int *dxdy = NULL;
182 
183  weight_buf_size = width * height * sizeof(float);
184  cle = clEnqueueFillBuffer(ctx->command_queue, ctx->weight,
185  &zero, sizeof(float), 0, weight_buf_size,
186  0, NULL, NULL);
187  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to fill weight buffer: %d.\n",
188  cle);
189  cle = clEnqueueFillBuffer(ctx->command_queue, ctx->sum,
190  &zero, sizeof(float), 0, weight_buf_size,
191  0, NULL, NULL);
192  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to fill sum buffer: %d.\n",
193  cle);
194 
195  nb_pixel = (2 * r + 1) * (2 * r + 1) - 1;
196  dxdy = av_malloc(nb_pixel * 2 * sizeof(cl_int));
197  tmp = av_malloc(nb_pixel * 2 * sizeof(int));
198 
199  if (!dxdy || !tmp)
200  goto fail;
201 
202  for (dx = -r; dx <= r; dx++) {
203  for (dy = -r; dy <= r; dy++) {
204  if (dx || dy) {
205  tmp[idx++] = dx;
206  tmp[idx++] = dy;
207  }
208  }
209  }
210  // repack dx/dy seperately, as we want to do four pairs of dx/dy in a batch
211  for (i = 0; i < nb_pixel / 4; i++) {
212  dxdy[i * 8] = tmp[i * 8]; // dx0
213  dxdy[i * 8 + 1] = tmp[i * 8 + 2]; // dx1
214  dxdy[i * 8 + 2] = tmp[i * 8 + 4]; // dx2
215  dxdy[i * 8 + 3] = tmp[i * 8 + 6]; // dx3
216  dxdy[i * 8 + 4] = tmp[i * 8 + 1]; // dy0
217  dxdy[i * 8 + 5] = tmp[i * 8 + 3]; // dy1
218  dxdy[i * 8 + 6] = tmp[i * 8 + 5]; // dy2
219  dxdy[i * 8 + 7] = tmp[i * 8 + 7]; // dy3
220  }
221  av_freep(&tmp);
222 
223  for (i = 0; i < nb_pixel / 4; i++) {
224  cl_int *dx_cur = dxdy + 8 * i;
225  cl_int *dy_cur = dxdy + 8 * i + 4;
226 
227  // horizontal pass
228  // integral(x,y) = sum([u(v,y) - u(v+dx,y+dy)]^2) for v in [0, x]
229  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 0, cl_mem, &ctx->integral_img);
230  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 1, cl_mem, &src);
231  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 2, cl_int, &width);
232  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 3, cl_int, &height);
233  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 4, cl_int4, dx_cur);
234  CL_SET_KERNEL_ARG(ctx->horiz_kernel, 5, cl_int4, dy_cur);
235  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->horiz_kernel, 1,
236  NULL, worksize1, NULL, 0, NULL, NULL);
237  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue horiz_kernel: %d.\n",
238  cle);
239  // vertical pass
240  // integral(x, y) = sum(integral(x, v)) for v in [0, y]
241  CL_SET_KERNEL_ARG(ctx->vert_kernel, 0, cl_mem, &ctx->integral_img);
242  CL_SET_KERNEL_ARG(ctx->vert_kernel, 1, cl_mem, &ctx->overflow);
243  CL_SET_KERNEL_ARG(ctx->vert_kernel, 2, cl_int, &width);
244  CL_SET_KERNEL_ARG(ctx->vert_kernel, 3, cl_int, &height);
245  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->vert_kernel,
246  1, NULL, worksize2, NULL, 0, NULL, NULL);
247  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue vert_kernel: %d.\n",
248  cle);
249 
250  // accumulate weights
251  CL_SET_KERNEL_ARG(ctx->accum_kernel, 0, cl_mem, &ctx->sum);
252  CL_SET_KERNEL_ARG(ctx->accum_kernel, 1, cl_mem, &ctx->weight);
253  CL_SET_KERNEL_ARG(ctx->accum_kernel, 2, cl_mem, &ctx->integral_img);
254  CL_SET_KERNEL_ARG(ctx->accum_kernel, 3, cl_mem, &src);
255  CL_SET_KERNEL_ARG(ctx->accum_kernel, 4, cl_int, &width);
256  CL_SET_KERNEL_ARG(ctx->accum_kernel, 5, cl_int, &height);
257  CL_SET_KERNEL_ARG(ctx->accum_kernel, 6, cl_int, &p);
258  CL_SET_KERNEL_ARG(ctx->accum_kernel, 7, cl_float, &ctx->h);
259  CL_SET_KERNEL_ARG(ctx->accum_kernel, 8, cl_int4, dx_cur);
260  CL_SET_KERNEL_ARG(ctx->accum_kernel, 9, cl_int4, dy_cur);
261  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->accum_kernel,
262  2, NULL, worksize3, NULL, 0, NULL, NULL);
263  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle);
264  }
265  av_freep(&dxdy);
266 
267  // average
268  CL_SET_KERNEL_ARG(ctx->average_kernel, 0, cl_mem, &dst);
269  CL_SET_KERNEL_ARG(ctx->average_kernel, 1, cl_mem, &src);
270  CL_SET_KERNEL_ARG(ctx->average_kernel, 2, cl_mem, &ctx->sum);
271  CL_SET_KERNEL_ARG(ctx->average_kernel, 3, cl_mem, &ctx->weight);
272  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->average_kernel, 2,
273  NULL, worksize3, NULL, 0, NULL, NULL);
274  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue average kernel: %d.\n",
275  cle);
276  cle = clFlush(ctx->command_queue);
277  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to flush command queue: %d.\n", cle);
278 fail:
279  if (tmp)
280  av_freep(&tmp);
281  if (dxdy)
282  av_freep(&dxdy);
283  return err;
284 }
285 
287 {
288  AVFilterContext *avctx = inlink->dst;
289  AVFilterLink *outlink = avctx->outputs[0];
290  NLMeansOpenCLContext *ctx = avctx->priv;
291  AVFrame *output = NULL;
292  AVHWFramesContext *input_frames_ctx;
293  const AVPixFmtDescriptor *desc;
294  enum AVPixelFormat in_format;
295  cl_mem src, dst;
296  const cl_int zero = 0;
297  int w, h, err, cle, overflow, p, patch, research;
298 
299  av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
300  av_get_pix_fmt_name(input->format),
301  input->width, input->height, input->pts);
302 
303  if (!input->hw_frames_ctx)
304  return AVERROR(EINVAL);
305  input_frames_ctx = (AVHWFramesContext*)input->hw_frames_ctx->data;
306  in_format = input_frames_ctx->sw_format;
307 
308  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
309  if (!output) {
310  err = AVERROR(ENOMEM);
311  goto fail;
312  }
313 
314  err = av_frame_copy_props(output, input);
315  if (err < 0)
316  goto fail;
317 
318  if (!ctx->initialised) {
319  desc = av_pix_fmt_desc_get(in_format);
320  if (!is_format_supported(in_format)) {
321  err = AVERROR(EINVAL);
322  av_log(avctx, AV_LOG_ERROR, "input format %s not supported\n",
323  av_get_pix_fmt_name(in_format));
324  goto fail;
325  }
326  ctx->chroma_w = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
327  ctx->chroma_h = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
328 
329  err = nlmeans_opencl_init(avctx, inlink->w, inlink->h);
330  if (err < 0)
331  goto fail;
332  }
333 
334  cle = clEnqueueWriteBuffer(ctx->command_queue, ctx->overflow, CL_FALSE,
335  0, sizeof(cl_int), &zero, 0, NULL, NULL);
336  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to initialize overflow"
337  "detection buffer %d.\n", cle);
338 
339  for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
340  src = (cl_mem) input->data[p];
341  dst = (cl_mem) output->data[p];
342 
343  if (!dst)
344  break;
345  av_assert0(src);
346  w = p ? ctx->chroma_w : inlink->w;
347  h = p ? ctx->chroma_h : inlink->h;
348  patch = (p ? ctx->patch_size_uv : ctx->patch_size) / 2;
349  research = (p ? ctx->research_size_uv : ctx->research_size) / 2;
350  err = nlmeans_plane(avctx, dst, src, w, h, patch, research);
351  if (err < 0)
352  goto fail;
353  }
354  // overflow occurred?
355  cle = clEnqueueReadBuffer(ctx->command_queue, ctx->overflow, CL_FALSE,
356  0, sizeof(cl_int), &overflow, 0, NULL, NULL);
357  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to read overflow: %d.\n", cle);
358 
359  cle = clFinish(ctx->command_queue);
360  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish kernel: %d.\n", cle);
361 
362  if (overflow > 0)
363  av_log(avctx, AV_LOG_ERROR, "integral image overflow %d\n", overflow);
364 
365  av_frame_free(&input);
366 
367  av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
368  av_get_pix_fmt_name(output->format),
369  output->width, output->height, output->pts);
370 
371  return ff_filter_frame(outlink, output);
372 
373 fail:
374  clFinish(ctx->command_queue);
375  av_frame_free(&input);
376  av_frame_free(&output);
377  return err;
378 }
379 
381 {
382  NLMeansOpenCLContext *ctx = avctx->priv;
383  cl_int cle;
384 
389 
392  CL_RELEASE_MEMORY(ctx->sum);
394 
396 
398 }
399 
400 #define OFFSET(x) offsetof(NLMeansOpenCLContext, x)
401 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
403  { "s", "denoising strength", OFFSET(sigma), AV_OPT_TYPE_DOUBLE, { .dbl = 1.0 }, 1.0, 30.0, FLAGS },
404  { "p", "patch size", OFFSET(patch_size), AV_OPT_TYPE_INT, { .i64 = 2*3+1 }, 0, 99, FLAGS },
405  { "pc", "patch size for chroma planes", OFFSET(patch_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS },
406  { "r", "research window", OFFSET(research_size), AV_OPT_TYPE_INT, { .i64 = 7*2+1 }, 0, 99, FLAGS },
407  { "rc", "research window for chroma planes", OFFSET(research_size_uv), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 99, FLAGS },
408  { NULL }
409 };
410 
411 AVFILTER_DEFINE_CLASS(nlmeans_opencl);
412 
414  {
415  .name = "default",
416  .type = AVMEDIA_TYPE_VIDEO,
417  .filter_frame = &nlmeans_opencl_filter_frame,
418  .config_props = &ff_opencl_filter_config_input,
419  },
420  { NULL }
421 };
422 
424  {
425  .name = "default",
426  .type = AVMEDIA_TYPE_VIDEO,
427  .config_props = &ff_opencl_filter_config_output,
428  },
429  { NULL }
430 };
431 
433  .name = "nlmeans_opencl",
434  .description = NULL_IF_CONFIG_SMALL("Non-local means denoiser through OpenCL"),
435  .priv_size = sizeof(NLMeansOpenCLContext),
436  .priv_class = &nlmeans_opencl_class,
440  .inputs = nlmeans_opencl_inputs,
441  .outputs = nlmeans_opencl_outputs,
442  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
443 };
#define NULL
Definition: coverity.c:32
#define FF_FILTER_FLAG_HWFRAME_AWARE
The filter is aware of hardware frames, and any hardware frame context should not be automatically pr...
Definition: internal.h:385
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2522
This structure describes decoded (raw) audio or video data.
Definition: frame.h:295
cl_command_queue command_queue
AVFILTER_DEFINE_CLASS(nlmeans_opencl)
AVOption.
Definition: opt.h:246
int ff_opencl_filter_config_input(AVFilterLink *inlink)
Check that the input link contains a suitable hardware frames context and extract the device from it...
Definition: opencl.c:60
const char * fmt
Definition: avisynth_c.h:861
int ff_opencl_filter_query_formats(AVFilterContext *avctx)
Return that all inputs and outputs support only AV_PIX_FMT_OPENCL.
Definition: opencl.c:28
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
Main libavfilter public API header.
Memory handling functions.
static const AVFilterPad nlmeans_opencl_outputs[]
const char * desc
Definition: nvenc.c:68
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
#define CL_RELEASE_MEMORY(m)
release an OpenCL Memory Object
Definition: opencl.h:92
OpenCLFilterContext ocf
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
const char * ff_opencl_source_nlmeans
Definition: nlmeans.c:2
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:99
#define src
Definition: vp8dsp.c:254
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:147
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
static int is_format_supported(enum AVPixelFormat fmt)
AVOpenCLDeviceContext * hwctx
Definition: opencl.h:41
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame...
Definition: frame.h:634
const char * name
Pad name.
Definition: internal.h:60
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1080
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AVOptions.
cl_device_id device_id
The primary device ID of the device.
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:388
#define height
int ff_opencl_filter_config_output(AVFilterLink *outlink)
Create a suitable hardware frames context for the output.
Definition: opencl.c:96
#define FLAGS
#define av_log(a,...)
A filter pad used for either input or output.
Definition: internal.h:54
#define CL_RELEASE_QUEUE(q)
release an OpenCL Command Queue
Definition: opencl.h:105
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
int width
Definition: frame.h:353
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
#define AVERROR(e)
Definition: error.h:43
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
const char * r
Definition: vf_curves.c:114
void * priv
private data for use by the filter
Definition: avfilter.h:353
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
#define zero
Definition: regdef.h:64
simple assert() macros that are a bit more flexible than ISO C assert().
#define fail()
Definition: checkasm.h:120
static const AVFilterPad nlmeans_opencl_inputs[]
#define width
uint8_t w
Definition: llviddspenc.c:38
AVFormatContext * ctx
Definition: movenc.c:48
AVFilter ff_vf_nlmeans_opencl
static const AVFilterPad inputs[]
Definition: af_acontrast.c:193
static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
#define FF_ARRAY_ELEMS(a)
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:368
#define CL_SET_KERNEL_ARG(kernel, arg_num, type, arg)
set argument to specific Kernel.
Definition: opencl.h:56
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
uint8_t * data
The data buffer.
Definition: buffer.h:89
static av_cold void nlmeans_opencl_uninit(AVFilterContext *avctx)
Filter definition.
Definition: avfilter.h:144
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:123
const char * name
Filter name.
Definition: avfilter.h:148
static int nlmeans_plane(AVFilterContext *avctx, cl_mem dst, cl_mem src, cl_int width, cl_int height, cl_int p, cl_int r)
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
static int nlmeans_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
#define CL_FAIL_ON_ERROR(errcode,...)
A helper macro to handle OpenCL errors.
Definition: opencl.h:69
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:309
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:244
common internal and external API header
void ff_opencl_filter_uninit(AVFilterContext *avctx)
Uninitialise an OpenCL filter context.
Definition: opencl.c:156
#define CL_RELEASE_KERNEL(k)
release an OpenCL Kernel
Definition: opencl.h:79
#define OFFSET(x)
static enum AVPixelFormat supported_formats[]
cl_context context
The OpenCL context which will contain all operations and frames on this device.
An instance of a filter.
Definition: avfilter.h:338
int height
Definition: frame.h:353
#define av_freep(p)
cl_program program
Definition: opencl.h:43
int ff_opencl_filter_load_program(AVFilterContext *avctx, const char **program_source_array, int nb_strings)
Load a new OpenCL program from strings in memory.
Definition: opencl.c:171
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2438
internal API functions
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:221
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static int nlmeans_opencl_init(AVFilterContext *avctx, int width, int height)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
static const AVOption nlmeans_opencl_options[]
static uint8_t tmp[11]
Definition: aes_ctr.c:26