FFmpeg
vf_avgblur_opencl.c
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1 /*
2  * Copyright (c) 2018 Dylan Fernando
3  * Copyright (c) 2018 Danil Iashchenko
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include "libavutil/common.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/opt.h"
25 
26 #include "avfilter.h"
27 #include "internal.h"
28 #include "opencl.h"
29 #include "opencl_source.h"
30 #include "video.h"
31 #include "boxblur.h"
32 
33 typedef struct AverageBlurOpenCLContext {
35 
37  cl_kernel kernel_horiz;
38  cl_kernel kernel_vert;
39  cl_command_queue command_queue;
40 
41  int radiusH;
42  int radiusV;
43  int planes;
44 
48  int radius[4];
49  int power[4];
50 
52 
53 
55 {
57  cl_int cle;
58  int err;
59 
61  if (err < 0)
62  goto fail;
63 
64  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
65  ctx->ocf.hwctx->device_id,
66  0, &cle);
67  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
68  "command queue %d.\n", cle);
69 
70  ctx->kernel_horiz = clCreateKernel(ctx->ocf.program,"avgblur_horiz", &cle);
71  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create horizontal "
72  "kernel %d.\n", cle);
73 
74  ctx->kernel_vert = clCreateKernel(ctx->ocf.program,"avgblur_vert", &cle);
75  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create vertical "
76  "kernel %d.\n", cle);
77 
78  ctx->initialised = 1;
79  return 0;
80 
81 fail:
82  if (ctx->command_queue)
83  clReleaseCommandQueue(ctx->command_queue);
84  if (ctx->kernel_horiz)
85  clReleaseKernel(ctx->kernel_horiz);
86  if (ctx->kernel_vert)
87  clReleaseKernel(ctx->kernel_vert);
88  return err;
89 }
90 
91 
93 {
94  AVFilterContext *ctx = inlink->dst;
96  int i;
97 
98  if (s->radiusV <= 0) {
99  s->radiusV = s->radiusH;
100  }
101 
102  for (i = 0; i < 4; i++) {
103  s->power[i] = 1;
104  }
105  return 0;
106 }
107 
108 
110 {
111  AVFilterContext *ctx = inlink->dst;
112  AverageBlurOpenCLContext *s = ctx->priv;
113  int err, i;
114 
116  &s->luma_param,
117  &s->chroma_param,
118  &s->alpha_param);
119 
120  if (err != 0) {
121  av_log(ctx, AV_LOG_ERROR, "Failed to evaluate "
122  "filter params: %d.\n", err);
123  return err;
124  }
125 
126  s->radius[Y] = s->luma_param.radius;
127  s->radius[U] = s->radius[V] = s->chroma_param.radius;
128  s->radius[A] = s->alpha_param.radius;
129 
130  s->power[Y] = s->luma_param.power;
131  s->power[U] = s->power[V] = s->chroma_param.power;
132  s->power[A] = s->alpha_param.power;
133 
134  for (i = 0; i < 4; i++) {
135  if (s->power[i] == 0) {
136  s->power[i] = 1;
137  s->radius[i] = 0;
138  }
139  }
140 
141  return 0;
142 }
143 
144 
146 {
147  AVFilterContext *avctx = inlink->dst;
148  AVFilterLink *outlink = avctx->outputs[0];
150  AVFrame *output = NULL;
151  AVFrame *intermediate = NULL;
152  cl_int cle;
153  size_t global_work[2];
154  cl_mem src, dst, inter;
155  int err, p, radius_x, radius_y, i;
156 
157  av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
158  av_get_pix_fmt_name(input->format),
159  input->width, input->height, input->pts);
160 
161  if (!input->hw_frames_ctx)
162  return AVERROR(EINVAL);
163 
164  if (!ctx->initialised) {
165  err = avgblur_opencl_init(avctx);
166  if (err < 0)
167  goto fail;
168 
169  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
171  if (err < 0)
172  goto fail;
173  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
175  if (err < 0)
176  goto fail;
177  }
178 
179  }
180 
181  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
182  if (!output) {
183  err = AVERROR(ENOMEM);
184  goto fail;
185  }
186  intermediate = ff_get_video_buffer(outlink, outlink->w, outlink->h);
187  if (!intermediate) {
188  err = AVERROR(ENOMEM);
189  goto fail;
190  }
191 
192  for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
193  src = (cl_mem) input->data[p];
194  dst = (cl_mem) output->data[p];
195  inter = (cl_mem)intermediate->data[p];
196 
197  if (!dst)
198  break;
199 
200  radius_x = ctx->radiusH;
201  radius_y = ctx->radiusV;
202 
203  if (!(ctx->planes & (1 << p))) {
204  radius_x = 0;
205  radius_y = 0;
206  }
207 
208  for (i = 0; i < ctx->power[p]; i++) {
209  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 0, cl_mem, &inter);
210  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 1, cl_mem, i == 0 ? &src : &dst);
211  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
212  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &radius_x);
213  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
214  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &ctx->radius[p]);
215  }
216 
217  err = ff_opencl_filter_work_size_from_image(avctx, global_work,
218  i == 0 ? intermediate : output, p, 0);
219  if (err < 0)
220  goto fail;
221 
222  av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
223  "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
224  p, global_work[0], global_work[1]);
225 
226  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_horiz, 2, NULL,
227  global_work, NULL,
228  0, NULL, NULL);
229  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue horizontal "
230  "kernel: %d.\n", cle);
231 
232  err = ff_opencl_filter_work_size_from_image(avctx, global_work,
233  i == 0 ? output : intermediate, p, 0);
234 
235  CL_SET_KERNEL_ARG(ctx->kernel_vert, 0, cl_mem, &dst);
236  CL_SET_KERNEL_ARG(ctx->kernel_vert, 1, cl_mem, &inter);
237 
238  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
239  CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &radius_y);
240  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
241  CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &ctx->radius[p]);
242  }
243 
244  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_vert, 2, NULL,
245  global_work, NULL,
246  0, NULL, NULL);
247  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue vertical "
248  "kernel: %d.\n", cle);
249  }
250  }
251 
252  cle = clFinish(ctx->command_queue);
253  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
254 
256  if (err < 0)
257  goto fail;
258 
260  av_frame_free(&intermediate);
261 
262  av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
263  av_get_pix_fmt_name(output->format),
264  output->width, output->height, output->pts);
265 
266  return ff_filter_frame(outlink, output);
267 
268 fail:
269  clFinish(ctx->command_queue);
272  av_frame_free(&intermediate);
273  return err;
274 }
275 
276 
278 {
280  cl_int cle;
281 
282  if (ctx->kernel_horiz) {
283  cle = clReleaseKernel(ctx->kernel_horiz);
284  if (cle != CL_SUCCESS)
285  av_log(avctx, AV_LOG_ERROR, "Failed to release "
286  "kernel: %d.\n", cle);
287  }
288 
289  if (ctx->kernel_vert) {
290  cle = clReleaseKernel(ctx->kernel_vert);
291  if (cle != CL_SUCCESS)
292  av_log(avctx, AV_LOG_ERROR, "Failed to release "
293  "kernel: %d.\n", cle);
294  }
295 
296  if (ctx->command_queue) {
297  cle = clReleaseCommandQueue(ctx->command_queue);
298  if (cle != CL_SUCCESS)
299  av_log(avctx, AV_LOG_ERROR, "Failed to release "
300  "command queue: %d.\n", cle);
301  }
302 
304 }
305 
306 
308  {
309  .name = "default",
310  .type = AVMEDIA_TYPE_VIDEO,
311  .filter_frame = &avgblur_opencl_filter_frame,
312  .config_props = &ff_opencl_filter_config_input,
313  },
314 };
315 
316 
318  {
319  .name = "default",
320  .type = AVMEDIA_TYPE_VIDEO,
321  .config_props = &ff_opencl_filter_config_output,
322  },
323 };
324 
325 
326 #define OFFSET(x) offsetof(AverageBlurOpenCLContext, x)
327 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
328 
329 #if CONFIG_AVGBLUR_OPENCL_FILTER
330 
331 static const AVOption avgblur_opencl_options[] = {
332  { "sizeX", "set horizontal size", OFFSET(radiusH), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
333  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
334  { "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
335  { NULL }
336 };
337 
338 AVFILTER_DEFINE_CLASS(avgblur_opencl);
339 
340 
342  .name = "avgblur_opencl",
343  .description = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
344  .priv_size = sizeof(AverageBlurOpenCLContext),
345  .priv_class = &avgblur_opencl_class,
351  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
352 };
353 
354 #endif /* CONFIG_AVGBLUR_OPENCL_FILTER */
355 
356 
357 #if CONFIG_BOXBLUR_OPENCL_FILTER
358 
359 static const AVOption boxblur_opencl_options[] = {
360  { "luma_radius", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
361  { "lr", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
362  { "luma_power", "How many times should the boxblur be applied to luma", OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },
363  { "lp", "How many times should the boxblur be applied to luma", OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },
364 
365  { "chroma_radius", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
366  { "cr", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
367  { "chroma_power", "How many times should the boxblur be applied to chroma", OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
368  { "cp", "How many times should the boxblur be applied to chroma", OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
369 
370  { "alpha_radius", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
371  { "ar", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
372  { "alpha_power", "How many times should the boxblur be applied to alpha", OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
373  { "ap", "How many times should the boxblur be applied to alpha", OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
374 
375  { NULL }
376 };
377 
378 AVFILTER_DEFINE_CLASS(boxblur_opencl);
379 
381  .name = "boxblur_opencl",
382  .description = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input video"),
383  .priv_size = sizeof(AverageBlurOpenCLContext),
384  .priv_class = &boxblur_opencl_class,
390  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
391 };
392 
393 #endif /* CONFIG_BOXBLUR_OPENCL_FILTER */
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:98
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
CL_SET_KERNEL_ARG
#define CL_SET_KERNEL_ARG(kernel, arg_num, type, arg)
set argument to specific Kernel.
Definition: opencl.h:61
FF_FILTER_FLAG_HWFRAME_AWARE
#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:371
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1018
output
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
Definition: filter_design.txt:225
inlink
The exact code depends on how similar the blocks are and how related they are to the and needs to apply these operations to the correct inlink or outlink if there are several Macros are available to factor that when no extra processing is inlink
Definition: filter_design.txt:212
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
boxblur_opencl_make_filter_params
static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)
Definition: vf_avgblur_opencl.c:109
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
opencl.h
AVOption
AVOption.
Definition: opt.h:247
avgblur_opencl_init
static int avgblur_opencl_init(AVFilterContext *avctx)
Definition: vf_avgblur_opencl.c:54
ff_opencl_filter_load_program
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:156
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:153
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
planes
static const struct @320 planes[]
FLAGS
#define FLAGS
Definition: vf_avgblur_opencl.c:327
A
#define A(x)
Definition: vp56_arith.h:28
ff_opencl_filter_work_size_from_image
int ff_opencl_filter_work_size_from_image(AVFilterContext *avctx, size_t *work_size, AVFrame *frame, int plane, int block_alignment)
Find the work size needed needed for a given plane of an image.
Definition: opencl.c:263
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:401
U
#define U(x)
Definition: vp56_arith.h:37
fail
#define fail()
Definition: checkasm.h:127
ff_opencl_filter_config_output
int ff_opencl_filter_config_output(AVFilterLink *outlink)
Create a suitable hardware frames context for the output.
Definition: opencl.c:81
AverageBlurOpenCLContext::radius
int radius[4]
Definition: vf_avgblur_opencl.c:48
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:50
ff_boxblur_eval_filter_params
int ff_boxblur_eval_filter_params(AVFilterLink *inlink, FilterParam *luma_param, FilterParam *chroma_param, FilterParam *alpha_param)
Definition: boxblur.c:46
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:257
AverageBlurOpenCLContext::radiusV
int radiusV
Definition: vf_avgblur_opencl.c:42
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AverageBlurOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_avgblur_opencl.c:34
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:191
if
if(ret)
Definition: filter_design.txt:179
AverageBlurOpenCLContext::planes
int planes
Definition: vf_avgblur_opencl.c:43
NULL
#define NULL
Definition: coverity.c:32
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:537
AverageBlurOpenCLContext::kernel_horiz
cl_kernel kernel_horiz
Definition: vf_avgblur_opencl.c:37
AverageBlurOpenCLContext::kernel_vert
cl_kernel kernel_vert
Definition: vf_avgblur_opencl.c:38
V
#define V
Definition: avdct.c:30
src
#define src
Definition: vp8dsp.c:255
AV_PIX_FMT_OPENCL
@ AV_PIX_FMT_OPENCL
Hardware surfaces for OpenCL.
Definition: pixfmt.h:325
avgblur_opencl_outputs
static const AVFilterPad avgblur_opencl_outputs[]
Definition: vf_avgblur_opencl.c:317
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
AverageBlurOpenCLContext::luma_param
FilterParam luma_param
Definition: vf_avgblur_opencl.c:45
ff_vf_boxblur_opencl
const AVFilter ff_vf_boxblur_opencl
AverageBlurOpenCLContext::chroma_param
FilterParam chroma_param
Definition: vf_avgblur_opencl.c:46
FilterParam
Definition: boxblur.h:31
opencl_source.h
input
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
Definition: filter_design.txt:172
Y
#define Y
Definition: boxblur.h:37
ff_opencl_filter_config_input
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:45
internal.h
AverageBlurOpenCLContext::initialised
int initialised
Definition: vf_avgblur_opencl.c:36
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:326
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:181
AverageBlurOpenCLContext::radiusH
int radiusH
Definition: vf_avgblur_opencl.c:41
ff_vf_avgblur_opencl
const AVFilter ff_vf_avgblur_opencl
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
common.h
boxblur.h
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:56
avgblur_opencl_inputs
static const AVFilterPad avgblur_opencl_inputs[]
Definition: vf_avgblur_opencl.c:307
AVFilter
Filter definition.
Definition: avfilter.h:149
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:132
avgblur_opencl_uninit
static av_cold void avgblur_opencl_uninit(AVFilterContext *avctx)
Definition: vf_avgblur_opencl.c:277
avgblur_opencl_filter_frame
static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
Definition: vf_avgblur_opencl.c:145
AverageBlurOpenCLContext::alpha_param
FilterParam alpha_param
Definition: vf_avgblur_opencl.c:47
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:193
avgblur_opencl_make_filter_params
static int avgblur_opencl_make_filter_params(AVFilterLink *inlink)
Definition: vf_avgblur_opencl.c:92
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avfilter.h
OpenCLFilterContext
Definition: opencl.h:36
ff_opencl_filter_uninit
void ff_opencl_filter_uninit(AVFilterContext *avctx)
Uninitialise an OpenCL filter context.
Definition: opencl.c:141
AVFilterContext
An instance of a filter.
Definition: avfilter.h:386
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AverageBlurOpenCLContext
Definition: vf_avgblur_opencl.c:33
AverageBlurOpenCLContext::power
int power[4]
Definition: vf_avgblur_opencl.c:49
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:192
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
CL_FAIL_ON_ERROR
#define CL_FAIL_ON_ERROR(errcode,...)
A helper macro to handle OpenCL errors.
Definition: opencl.h:74
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:279
AverageBlurOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_avgblur_opencl.c:39
AVFilterContext::filter
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:389
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:228
OFFSET
#define OFFSET(x)
Definition: vf_avgblur_opencl.c:326
ff_opencl_source_avgblur
const char * ff_opencl_source_avgblur
av_get_pix_fmt_name
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:2484
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:398