FFmpeg
vf_avgblur_opencl.c
Go to the documentation of this file.
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 "config_components.h"
23 
24 #include "libavutil/common.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/opt.h"
27 
28 #include "avfilter.h"
29 #include "internal.h"
30 #include "opencl.h"
31 #include "opencl_source.h"
32 #include "video.h"
33 #include "boxblur.h"
34 
35 typedef struct AverageBlurOpenCLContext {
37 
39  cl_kernel kernel_horiz;
40  cl_kernel kernel_vert;
41  cl_command_queue command_queue;
42 
43  int radiusH;
44  int radiusV;
45  int planes;
46 
50  int radius[4];
51  int power[4];
52 
54 
55 
57 {
59  cl_int cle;
60  int err;
61 
63  if (err < 0)
64  goto fail;
65 
66  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
67  ctx->ocf.hwctx->device_id,
68  0, &cle);
69  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
70  "command queue %d.\n", cle);
71 
72  ctx->kernel_horiz = clCreateKernel(ctx->ocf.program,"avgblur_horiz", &cle);
73  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create horizontal "
74  "kernel %d.\n", cle);
75 
76  ctx->kernel_vert = clCreateKernel(ctx->ocf.program,"avgblur_vert", &cle);
77  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create vertical "
78  "kernel %d.\n", cle);
79 
80  ctx->initialised = 1;
81  return 0;
82 
83 fail:
84  if (ctx->command_queue)
85  clReleaseCommandQueue(ctx->command_queue);
86  if (ctx->kernel_horiz)
87  clReleaseKernel(ctx->kernel_horiz);
88  if (ctx->kernel_vert)
89  clReleaseKernel(ctx->kernel_vert);
90  return err;
91 }
92 
93 
95 {
96  AVFilterContext *ctx = inlink->dst;
98  int i;
99 
100  if (s->radiusV <= 0) {
101  s->radiusV = s->radiusH;
102  }
103 
104  for (i = 0; i < 4; i++) {
105  s->power[i] = 1;
106  }
107  return 0;
108 }
109 
110 
112 {
113  AVFilterContext *ctx = inlink->dst;
114  AverageBlurOpenCLContext *s = ctx->priv;
115  int err, i;
116 
118  &s->luma_param,
119  &s->chroma_param,
120  &s->alpha_param);
121 
122  if (err != 0) {
123  av_log(ctx, AV_LOG_ERROR, "Failed to evaluate "
124  "filter params: %d.\n", err);
125  return err;
126  }
127 
128  s->radius[Y] = s->luma_param.radius;
129  s->radius[U] = s->radius[V] = s->chroma_param.radius;
130  s->radius[A] = s->alpha_param.radius;
131 
132  s->power[Y] = s->luma_param.power;
133  s->power[U] = s->power[V] = s->chroma_param.power;
134  s->power[A] = s->alpha_param.power;
135 
136  for (i = 0; i < 4; i++) {
137  if (s->power[i] == 0) {
138  s->power[i] = 1;
139  s->radius[i] = 0;
140  }
141  }
142 
143  return 0;
144 }
145 
146 
148 {
149  AVFilterContext *avctx = inlink->dst;
150  AVFilterLink *outlink = avctx->outputs[0];
152  AVFrame *output = NULL;
153  AVFrame *intermediate = NULL;
154  cl_int cle;
155  size_t global_work[2];
156  cl_mem src, dst, inter;
157  int err, p, radius_x, radius_y, i;
158 
159  av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
160  av_get_pix_fmt_name(input->format),
161  input->width, input->height, input->pts);
162 
163  if (!input->hw_frames_ctx)
164  return AVERROR(EINVAL);
165 
166  if (!ctx->initialised) {
167  err = avgblur_opencl_init(avctx);
168  if (err < 0)
169  goto fail;
170 
171  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
173  if (err < 0)
174  goto fail;
175  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
177  if (err < 0)
178  goto fail;
179  }
180 
181  }
182 
183  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
184  if (!output) {
185  err = AVERROR(ENOMEM);
186  goto fail;
187  }
188  intermediate = ff_get_video_buffer(outlink, outlink->w, outlink->h);
189  if (!intermediate) {
190  err = AVERROR(ENOMEM);
191  goto fail;
192  }
193 
194  for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
195  src = (cl_mem) input->data[p];
196  dst = (cl_mem) output->data[p];
197  inter = (cl_mem)intermediate->data[p];
198 
199  if (!dst)
200  break;
201 
202  radius_x = ctx->radiusH;
203  radius_y = ctx->radiusV;
204 
205  if (!(ctx->planes & (1 << p))) {
206  radius_x = 0;
207  radius_y = 0;
208  }
209 
210  for (i = 0; i < ctx->power[p]; i++) {
211  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 0, cl_mem, &inter);
212  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 1, cl_mem, i == 0 ? &src : &dst);
213  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
214  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &radius_x);
215  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
216  CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &ctx->radius[p]);
217  }
218 
219  err = ff_opencl_filter_work_size_from_image(avctx, global_work,
220  i == 0 ? intermediate : output, p, 0);
221  if (err < 0)
222  goto fail;
223 
224  av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
225  "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
226  p, global_work[0], global_work[1]);
227 
228  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_horiz, 2, NULL,
229  global_work, NULL,
230  0, NULL, NULL);
231  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue horizontal "
232  "kernel: %d.\n", cle);
233 
234  err = ff_opencl_filter_work_size_from_image(avctx, global_work,
235  i == 0 ? output : intermediate, p, 0);
236 
237  CL_SET_KERNEL_ARG(ctx->kernel_vert, 0, cl_mem, &dst);
238  CL_SET_KERNEL_ARG(ctx->kernel_vert, 1, cl_mem, &inter);
239 
240  if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
241  CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &radius_y);
242  } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
243  CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &ctx->radius[p]);
244  }
245 
246  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_vert, 2, NULL,
247  global_work, NULL,
248  0, NULL, NULL);
249  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue vertical "
250  "kernel: %d.\n", cle);
251  }
252  }
253 
254  cle = clFinish(ctx->command_queue);
255  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
256 
258  if (err < 0)
259  goto fail;
260 
262  av_frame_free(&intermediate);
263 
264  av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
265  av_get_pix_fmt_name(output->format),
266  output->width, output->height, output->pts);
267 
268  return ff_filter_frame(outlink, output);
269 
270 fail:
271  clFinish(ctx->command_queue);
274  av_frame_free(&intermediate);
275  return err;
276 }
277 
278 
280 {
282  cl_int cle;
283 
284  if (ctx->kernel_horiz) {
285  cle = clReleaseKernel(ctx->kernel_horiz);
286  if (cle != CL_SUCCESS)
287  av_log(avctx, AV_LOG_ERROR, "Failed to release "
288  "kernel: %d.\n", cle);
289  }
290 
291  if (ctx->kernel_vert) {
292  cle = clReleaseKernel(ctx->kernel_vert);
293  if (cle != CL_SUCCESS)
294  av_log(avctx, AV_LOG_ERROR, "Failed to release "
295  "kernel: %d.\n", cle);
296  }
297 
298  if (ctx->command_queue) {
299  cle = clReleaseCommandQueue(ctx->command_queue);
300  if (cle != CL_SUCCESS)
301  av_log(avctx, AV_LOG_ERROR, "Failed to release "
302  "command queue: %d.\n", cle);
303  }
304 
306 }
307 
308 
310  {
311  .name = "default",
312  .type = AVMEDIA_TYPE_VIDEO,
313  .filter_frame = &avgblur_opencl_filter_frame,
314  .config_props = &ff_opencl_filter_config_input,
315  },
316 };
317 
318 
320  {
321  .name = "default",
322  .type = AVMEDIA_TYPE_VIDEO,
323  .config_props = &ff_opencl_filter_config_output,
324  },
325 };
326 
327 
328 #define OFFSET(x) offsetof(AverageBlurOpenCLContext, x)
329 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
330 
331 #if CONFIG_AVGBLUR_OPENCL_FILTER
332 
333 static const AVOption avgblur_opencl_options[] = {
334  { "sizeX", "set horizontal size", OFFSET(radiusH), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
335  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
336  { "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
337  { NULL }
338 };
339 
340 AVFILTER_DEFINE_CLASS(avgblur_opencl);
341 
342 
344  .name = "avgblur_opencl",
345  .description = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
346  .priv_size = sizeof(AverageBlurOpenCLContext),
347  .priv_class = &avgblur_opencl_class,
353  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
354 };
355 
356 #endif /* CONFIG_AVGBLUR_OPENCL_FILTER */
357 
358 
359 #if CONFIG_BOXBLUR_OPENCL_FILTER
360 
361 static const AVOption boxblur_opencl_options[] = {
362  { "luma_radius", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
363  { "lr", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
364  { "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 },
365  { "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 },
366 
367  { "chroma_radius", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
368  { "cr", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
369  { "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 },
370  { "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 },
371 
372  { "alpha_radius", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
373  { "ar", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
374  { "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 },
375  { "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 },
376 
377  { NULL }
378 };
379 
380 AVFILTER_DEFINE_CLASS(boxblur_opencl);
381 
383  .name = "boxblur_opencl",
384  .description = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input video"),
385  .priv_size = sizeof(AverageBlurOpenCLContext),
386  .priv_class = &boxblur_opencl_class,
392  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
393 };
394 
395 #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:101
A
#define A(x)
Definition: vpx_arith.h:28
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:370
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:999
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:116
boxblur_opencl_make_filter_params
static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)
Definition: vf_avgblur_opencl.c:111
test::height
int height
Definition: vc1dsp.c:39
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
opencl.h
AVOption
AVOption.
Definition: opt.h:251
avgblur_opencl_init
static int avgblur_opencl_init(AVFilterContext *avctx)
Definition: vf_avgblur_opencl.c:56
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:175
video.h
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
FLAGS
#define FLAGS
Definition: vf_avgblur_opencl.c:329
init
static int init
Definition: av_tx.c:47
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:423
fail
#define fail()
Definition: checkasm.h:131
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:50
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
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:256
AverageBlurOpenCLContext::radiusV
int radiusV
Definition: vf_avgblur_opencl.c:44
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:36
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:190
if
if(ret)
Definition: filter_design.txt:179
AverageBlurOpenCLContext::planes
int planes
Definition: vf_avgblur_opencl.c:45
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:603
AverageBlurOpenCLContext::kernel_horiz
cl_kernel kernel_horiz
Definition: vf_avgblur_opencl.c:39
AverageBlurOpenCLContext::kernel_vert
cl_kernel kernel_vert
Definition: vf_avgblur_opencl.c:40
V
#define V
Definition: avdct.c:30
AV_PIX_FMT_OPENCL
@ AV_PIX_FMT_OPENCL
Hardware surfaces for OpenCL.
Definition: pixfmt.h:327
avgblur_opencl_outputs
static const AVFilterPad avgblur_opencl_outputs[]
Definition: vf_avgblur_opencl.c:319
test::width
int width
Definition: vc1dsp.c:38
planes
static const struct @335 planes[]
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:47
ff_vf_boxblur_opencl
const AVFilter ff_vf_boxblur_opencl
AverageBlurOpenCLContext::chroma_param
FilterParam chroma_param
Definition: vf_avgblur_opencl.c:48
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:38
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:325
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:180
AverageBlurOpenCLContext::radiusH
int radiusH
Definition: vf_avgblur_opencl.c:43
ff_vf_avgblur_opencl
const AVFilter ff_vf_avgblur_opencl
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
common.h
boxblur.h
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
avgblur_opencl_inputs
static const AVFilterPad avgblur_opencl_inputs[]
Definition: vf_avgblur_opencl.c:309
AVFilter
Filter definition.
Definition: avfilter.h:171
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:279
avgblur_opencl_filter_frame
static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
Definition: vf_avgblur_opencl.c:147
AverageBlurOpenCLContext::alpha_param
FilterParam alpha_param
Definition: vf_avgblur_opencl.c:49
U
#define U(x)
Definition: vpx_arith.h:37
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:195
avgblur_opencl_make_filter_params
static int avgblur_opencl_make_filter_params(AVFilterLink *inlink)
Definition: vf_avgblur_opencl.c:94
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
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:408
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AverageBlurOpenCLContext
Definition: vf_avgblur_opencl.c:35
AverageBlurOpenCLContext::power
int power[4]
Definition: vf_avgblur_opencl.c:51
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:191
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
imgutils.h
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:27
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:285
AverageBlurOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_avgblur_opencl.c:41
AVFilterContext::filter
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:411
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
OFFSET
#define OFFSET(x)
Definition: vf_avgblur_opencl.c:328
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:2623
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:420