FFmpeg: libavfilter/vf_avgblur_opencl.c Source File

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vf_avgblur_opencl.c

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1 /*

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 */

22 #include "config_components.h"

24 #include "libavutil/common.h"

25 #include "libavutil/imgutils.h"

26 #include "libavutil/opt.h"

28 #include "avfilter.h"

29 #include "filters.h"

30 #include "opencl.h"

31 #include "opencl_source.h"

32 #include "video.h"

33 #include "boxblur.h"

35 typedef struct AverageBlurOpenCLContext {

36 OpenCLFilterContext ocf;

38 int initialised;

39 cl_kernel kernel_horiz;

40 cl_kernel kernel_vert;

41 cl_command_queue command_queue;

43 int radiusH;

44 int radiusV;

45 int planes;

47 FilterParam luma_param;

48 FilterParam chroma_param;

49 FilterParam alpha_param;

50 int radius[AV_VIDEO_MAX_PLANES];

51 int power[AV_VIDEO_MAX_PLANES];

53 } AverageBlurOpenCLContext;

56 static int avgblur_opencl_init(AVFilterContext *avctx)

57 {

58 AverageBlurOpenCLContext *ctx = avctx->priv;

59 cl_int cle;

60 int err;

62 err = ff_opencl_filter_load_program(avctx, &ff_source_avgblur_cl, 1);

63 if (err < 0)

64 goto fail;

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);

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);

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);

80 ctx->initialised = 1;

81 return 0;

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 }

94 static int avgblur_opencl_make_filter_params(AVFilterLink *inlink)

95 {

96 AVFilterContext *ctx = inlink->dst;

97 AverageBlurOpenCLContext *s = ctx->priv;

98 int i;

100 if (s->radiusV <= 0) {

101 s->radiusV = s->radiusH;

102 }

103

104 for (i = 0; i < AV_VIDEO_MAX_PLANES; i++) {

105 s->power[i] = 1;

106 }

107 return 0;

108 }

109

110

111 static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)

112 {

113 AVFilterContext *ctx = inlink->dst;

114 AverageBlurOpenCLContext *s = ctx->priv;

115 int err, i;

116

117 err = ff_boxblur_eval_filter_params(inlink,

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 < AV_VIDEO_MAX_PLANES; 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

147 static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)

148 {

149 AVFilterContext *avctx = inlink->dst;

150 AVFilterLink *outlink = avctx->outputs[0];

151 AverageBlurOpenCLContext *ctx = avctx->priv;

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")) {

172 err = avgblur_opencl_make_filter_params(inlink);

173 if (err < 0)

174 goto fail;

175 } else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {

176 err = boxblur_opencl_make_filter_params(inlink);

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 < FFMIN(FF_ARRAY_ELEMS(output->data), AV_VIDEO_MAX_PLANES); 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

257 err = av_frame_copy_props(output, input);

258 if (err < 0)

259 goto fail;

260

261 av_frame_free(&input);

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);

272 av_frame_free(&input);

273 av_frame_free(&output);

274 av_frame_free(&intermediate);

275 return err;

276 }

277

278

279 static av_cold void avgblur_opencl_uninit(AVFilterContext *avctx)

280 {

281 AverageBlurOpenCLContext *ctx = avctx->priv;

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

305 ff_opencl_filter_uninit(avctx);

306 }

307

308

309 static const AVFilterPad avgblur_opencl_inputs[] = {

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

319 static const AVFilterPad avgblur_opencl_outputs[] = {

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

343 const FFFilter ff_vf_avgblur_opencl = {

344 .p.name = "avgblur_opencl",

345 .p.description = NULL_IF_CONFIG_SMALL("Apply average blur filter"),

346 .p.priv_class = &avgblur_opencl_class,

347 .priv_size = sizeof(AverageBlurOpenCLContext),

348 .init = &ff_opencl_filter_init,

349 .uninit = &avgblur_opencl_uninit,

350 FILTER_INPUTS(avgblur_opencl_inputs),

351 FILTER_OUTPUTS(avgblur_opencl_outputs),

352 FILTER_SINGLE_PIXFMT(AV_PIX_FMT_OPENCL),

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

382 const FFFilter ff_vf_boxblur_opencl = {

383 .p.name = "boxblur_opencl",

384 .p.description = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input video"),

385 .p.priv_class = &boxblur_opencl_class,

386 .p.flags = AVFILTER_FLAG_HWDEVICE,

387 .priv_size = sizeof(AverageBlurOpenCLContext),

388 .init = &ff_opencl_filter_init,

389 .uninit = &avgblur_opencl_uninit,

390 FILTER_INPUTS(avgblur_opencl_inputs),

391 FILTER_OUTPUTS(avgblur_opencl_outputs),

392 FILTER_SINGLE_PIXFMT(AV_PIX_FMT_OPENCL),

393 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,

394 };

395

396 #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:117

#define A(x)

Definition: vpx_arith.h:28

AverageBlurOpenCLContext::radius

int radius[AV_VIDEO_MAX_PLANES]

Definition: vf_avgblur_opencl.c:50

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_frame

int ff_filter_frame(AVFilterLink *link, AVFrame *frame)

Send a frame of data to the next filter.

Definition: avfilter.c:1067

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:226

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

ff_vf_boxblur_opencl

const FFFilter ff_vf_boxblur_opencl

AV_VIDEO_MAX_PLANES

#define AV_VIDEO_MAX_PLANES

Maximum number of planes in any pixel format.

Definition: pixfmt.h:40

av_frame_free

void av_frame_free(AVFrame **frame)

Free the frame and any dynamically allocated objects in it, e.g.

Definition: frame.c:64

boxblur_opencl_make_filter_params

static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)

Definition: vf_avgblur_opencl.c:111

FILTER_INPUTS

#define FILTER_INPUTS(array)

Definition: filters.h:263

test::height

int height

Definition: vc1dsp.c:40

AVFrame

This structure describes decoded (raw) audio or video data.

Definition: frame.h:427

opencl.h

AVOption

AVOption.

Definition: opt.h:429

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:159

AVFilter::name

const char * name

Filter name.

Definition: avfilter.h:220

video.h

AVFilterLink

A link between two filters.

Definition: avfilter.h:395

AVFrame::data

uint8_t * data[AV_NUM_DATA_POINTERS]

pointer to the picture/channel planes.

Definition: frame.h:448

FLAGS

#define FLAGS

Definition: vf_avgblur_opencl.c:329

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:266

AVFilterContext::priv

void * priv

private data for use by the filter

Definition: avfilter.h:289

fail

#define fail()

Definition: checkasm.h:207

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:83

AVFilterPad

A filter pad used for either input or output.

Definition: filters.h:39

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:47

AV_LOG_ERROR

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:210

FF_ARRAY_ELEMS

#define FF_ARRAY_ELEMS(a)

Definition: sinewin_tablegen.c:29

av_cold

#define av_cold

Definition: attributes.h:106

FFFilter

Definition: filters.h:266

AverageBlurOpenCLContext::power

int power[AV_VIDEO_MAX_PLANES]

Definition: vf_avgblur_opencl.c:51

#define s(width, name)

Definition: cbs_vp9.c:198

AverageBlurOpenCLContext::radiusV

int radiusV

Definition: vf_avgblur_opencl.c:44

filters.h

AV_LOG_DEBUG

#define AV_LOG_DEBUG

Stuff which is only useful for libav* developers.

Definition: log.h:231

ctx

AVFormatContext * ctx

Definition: movenc.c:49

AverageBlurOpenCLContext::ocf

OpenCLFilterContext ocf

Definition: vf_avgblur_opencl.c:36

FILTER_OUTPUTS

#define FILTER_OUTPUTS(array)

Definition: filters.h:264

ff_vf_avgblur_opencl

const FFFilter ff_vf_avgblur_opencl

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:599

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

#define V

Definition: avdct.c:32

AV_PIX_FMT_OPENCL

@ AV_PIX_FMT_OPENCL

Hardware surfaces for OpenCL.

Definition: pixfmt.h:358

AVFILTER_DEFINE_CLASS

#define AVFILTER_DEFINE_CLASS(fname)

Definition: filters.h:477

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: filters.h:207

avgblur_opencl_outputs

static const AVFilterPad avgblur_opencl_outputs[]

Definition: vf_avgblur_opencl.c:319

test::width

int width

Definition: vc1dsp.c:39

init

int(* init)(AVBSFContext *ctx)

Definition: dts2pts.c:550

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:94

dst

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst

Definition: dsp.h:87

AVFILTER_FLAG_HWDEVICE

#define AVFILTER_FLAG_HWDEVICE

The filter can create hardware frames using AVFilterContext.hw_device_ctx.

Definition: avfilter.h:188

AverageBlurOpenCLContext::luma_param

FilterParam luma_param

Definition: vf_avgblur_opencl.c:47

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

#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:46

AverageBlurOpenCLContext::initialised

int initialised

Definition: vf_avgblur_opencl.c:38

AverageBlurOpenCLContext::radiusH

int radiusH