FFmpeg
vf_convolution_opencl.c
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1 /*
2  * Copyright (c) 2018 Danil Iashchenko
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "config_components.h"
22 
23 #include "libavutil/avassert.h"
24 #include "libavutil/common.h"
25 #include "libavutil/imgutils.h"
26 #include "libavutil/mem.h"
27 #include "libavutil/opt.h"
28 #include "libavutil/pixdesc.h"
29 #include "libavutil/avstring.h"
30 
31 
32 #include "avfilter.h"
33 #include "internal.h"
34 #include "opencl.h"
35 #include "opencl_source.h"
36 #include "video.h"
37 
38 typedef struct ConvolutionOpenCLContext {
40 
42  cl_kernel kernel;
43  cl_command_queue command_queue;
44 
45  char *matrix_str[4];
46 
47  cl_mem matrix[4];
48  cl_int matrix_sizes[4];
49  cl_int dims[4];
50  cl_float rdivs[4];
51  cl_float biases[4];
52 
53  cl_int planes;
54  cl_float scale;
55  cl_float delta;
56 
58 
60 {
62  const char *kernel_name;
63  cl_int cle;
64  int err;
65 
67  if (err < 0)
68  goto fail;
69 
70  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
71  ctx->ocf.hwctx->device_id,
72  0, &cle);
73  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
74  "command queue %d.\n", cle);
75 
76  if (!strcmp(avctx->filter->name, "convolution_opencl")) {
77  kernel_name = "convolution_global";
78  } else if (!strcmp(avctx->filter->name, "sobel_opencl")) {
79  kernel_name = "sobel_global";
80  } else if (!strcmp(avctx->filter->name, "prewitt_opencl")){
81  kernel_name = "prewitt_global";
82  } else if (!strcmp(avctx->filter->name, "roberts_opencl")){
83  kernel_name = "roberts_global";
84  } else {
85  av_assert0(0);
86  }
87  ctx->kernel = clCreateKernel(ctx->ocf.program, kernel_name, &cle);
88  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create "
89  "kernel %d.\n", cle);
90 
91  ctx->initialised = 1;
92  return 0;
93 
94 fail:
95  if (ctx->command_queue)
96  clReleaseCommandQueue(ctx->command_queue);
97  if (ctx->kernel)
98  clReleaseKernel(ctx->kernel);
99  return err;
100 }
101 
102 
103 
105 {
107  float *matrix = NULL;
108  size_t matrix_bytes;
109  cl_mem buffer;
110  cl_int cle;
111  int i, j;
112  int sscanf_err;
113  char *p, *arg, *saveptr = NULL;
114  float input_matrix[4][49];
115 
116  for (i = 0; i < 4; i++) {
117  ctx->biases[i] = ctx->biases[i] / 255.0;
118  }
119 
120  for (i = 0; i < 4; i++) {
121  p = ctx->matrix_str[i];
122  while (ctx->matrix_sizes[i] < 49) {
123  arg = av_strtok(p, " ", &saveptr);
124  if (!arg) {
125  break;
126  }
127  p = NULL;
128  sscanf_err = sscanf(arg, "%f", &input_matrix[i][ctx->matrix_sizes[i]]);
129  if (sscanf_err != 1) {
130  av_log(ctx, AV_LOG_ERROR, "Matrix is sequence of 9, 25 or 49 signed numbers\n");
131  return AVERROR(EINVAL);
132  }
133  ctx->matrix_sizes[i]++;
134  }
135  if (ctx->matrix_sizes[i] == 9) {
136  ctx->dims[i] = 3;
137  } else if (ctx->matrix_sizes[i] == 25) {
138  ctx->dims[i] = 5;
139  } else if (ctx->matrix_sizes[i] == 49) {
140  ctx->dims[i] = 7;
141  } else {
142  av_log(ctx, AV_LOG_ERROR, "Invalid matrix size:%d\n", ctx->matrix_sizes[i]);
143  return AVERROR(EINVAL);
144  }
145 
146  }
147 
148  for (j = 0; j < 4; j++) {
149  matrix_bytes = sizeof(float)*ctx->matrix_sizes[j];
150  matrix = av_malloc(matrix_bytes);
151  if (!matrix) {
152  av_freep(&matrix);
153  return AVERROR(ENOMEM);
154  }
155 
156  for (i = 0; i < ctx->matrix_sizes[j]; i++)
157  matrix[i] = input_matrix[j][i];
158 
159  buffer = clCreateBuffer(ctx->ocf.hwctx->context,
160  CL_MEM_READ_ONLY |
161  CL_MEM_COPY_HOST_PTR |
162  CL_MEM_HOST_NO_ACCESS,
163  matrix_bytes, matrix, &cle);
164  if (!buffer) {
165  av_log(avctx, AV_LOG_ERROR, "Failed to create matrix buffer: "
166  "%d.\n", cle);
167  av_freep(&matrix);
168  return AVERROR(EIO);
169  }
170  ctx->matrix[j] = buffer;
171  av_freep(&matrix);
172  }
173 
174  return 0;
175 }
176 
178 {
179  AVFilterContext *avctx = inlink->dst;
180  AVFilterLink *outlink = avctx->outputs[0];
182  AVFrame *output = NULL;
183  cl_int cle;
184  size_t global_work[2];
185  cl_mem src, dst;
186  int err, p;
187  size_t origin[3] = {0, 0, 0};
188  size_t region[3] = {0, 0, 1};
189 
190  av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
191  av_get_pix_fmt_name(input->format),
192  input->width, input->height, input->pts);
193 
194  if (!input->hw_frames_ctx)
195  return AVERROR(EINVAL);
196 
197  if (!ctx->initialised) {
198  err = convolution_opencl_init(avctx);
199  if (err < 0)
200  goto fail;
201 
202  if (!strcmp(avctx->filter->name, "convolution_opencl")) {
204  if (err < 0)
205  goto fail;
206  } else {
207  ctx->delta /= 255.0;
208  }
209 
210  }
211 
212  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
213  if (!output) {
214  err = AVERROR(ENOMEM);
215  goto fail;
216  }
217 
218  for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
219  src = (cl_mem) input->data[p];
220  dst = (cl_mem)output->data[p];
221 
222  if (!dst)
223  break;
224 
225  if (!strcmp(avctx->filter->name, "convolution_opencl")) {
226  CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
227  CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
228  CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_int, &ctx->dims[p]);
229  CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_mem, &ctx->matrix[p]);
230  CL_SET_KERNEL_ARG(ctx->kernel, 4, cl_float, &ctx->rdivs[p]);
231  CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_float, &ctx->biases[p]);
232 
233  err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p, 0);
234  if (err < 0)
235  goto fail;
236 
237  av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
238  "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
239  p, global_work[0], global_work[1]);
240 
241  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
242  global_work, NULL,
243  0, NULL, NULL);
244  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue "
245  "kernel: %d.\n", cle);
246  } else {
247  if (!(ctx->planes & (1 << p))) {
248  err = ff_opencl_filter_work_size_from_image(avctx, region, output, p, 0);
249  if (err < 0)
250  goto fail;
251 
252  cle = clEnqueueCopyImage(ctx->command_queue, src, dst,
253  origin, origin, region, 0, NULL, NULL);
254  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to copy plane %d: %d.\n",
255  p, cle);
256  } else {
257  CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
258  CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
259  CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_float, &ctx->scale);
260  CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_float, &ctx->delta);
261 
262  err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p, 0);
263  if (err < 0)
264  goto fail;
265 
266  av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
267  "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
268  p, global_work[0], global_work[1]);
269 
270  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
271  global_work, NULL,
272  0, NULL, NULL);
273  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue "
274  "kernel: %d.\n", cle);
275  }
276  }
277  }
278 
279  cle = clFinish(ctx->command_queue);
280  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
281 
283  if (err < 0)
284  goto fail;
285 
287 
288  av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
289  av_get_pix_fmt_name(output->format),
290  output->width, output->height, output->pts);
291 
292  return ff_filter_frame(outlink, output);
293 
294 fail:
295  clFinish(ctx->command_queue);
298  return err;
299 }
300 
302 {
304  cl_int cle;
305  int i;
306 
307  for (i = 0; i < 4; i++) {
308  clReleaseMemObject(ctx->matrix[i]);
309  }
310 
311  if (ctx->kernel) {
312  cle = clReleaseKernel(ctx->kernel);
313  if (cle != CL_SUCCESS)
314  av_log(avctx, AV_LOG_ERROR, "Failed to release "
315  "kernel: %d.\n", cle);
316  }
317 
318  if (ctx->command_queue) {
319  cle = clReleaseCommandQueue(ctx->command_queue);
320  if (cle != CL_SUCCESS)
321  av_log(avctx, AV_LOG_ERROR, "Failed to release "
322  "command queue: %d.\n", cle);
323  }
324 
326 }
327 
329  {
330  .name = "default",
331  .type = AVMEDIA_TYPE_VIDEO,
332  .filter_frame = &convolution_opencl_filter_frame,
333  .config_props = &ff_opencl_filter_config_input,
334  },
335 };
336 
338  {
339  .name = "default",
340  .type = AVMEDIA_TYPE_VIDEO,
341  .config_props = &ff_opencl_filter_config_output,
342  },
343 };
344 
345 #define OFFSET(x) offsetof(ConvolutionOpenCLContext, x)
346 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
347 
348 #if CONFIG_CONVOLUTION_OPENCL_FILTER
349 
350 static const AVOption convolution_opencl_options[] = {
351  { "0m", "set matrix for 2nd plane", OFFSET(matrix_str[0]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
352  { "1m", "set matrix for 2nd plane", OFFSET(matrix_str[1]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
353  { "2m", "set matrix for 3rd plane", OFFSET(matrix_str[2]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
354  { "3m", "set matrix for 4th plane", OFFSET(matrix_str[3]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
355  { "0rdiv", "set rdiv for 1nd plane", OFFSET(rdivs[0]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
356  { "1rdiv", "set rdiv for 2nd plane", OFFSET(rdivs[1]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
357  { "2rdiv", "set rdiv for 3rd plane", OFFSET(rdivs[2]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
358  { "3rdiv", "set rdiv for 4th plane", OFFSET(rdivs[3]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
359  { "0bias", "set bias for 1st plane", OFFSET(biases[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
360  { "1bias", "set bias for 2nd plane", OFFSET(biases[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
361  { "2bias", "set bias for 3rd plane", OFFSET(biases[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
362  { "3bias", "set bias for 4th plane", OFFSET(biases[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
363  { NULL }
364 };
365 
366 AVFILTER_DEFINE_CLASS(convolution_opencl);
367 
369  .name = "convolution_opencl",
370  .description = NULL_IF_CONFIG_SMALL("Apply convolution mask to input video"),
371  .priv_size = sizeof(ConvolutionOpenCLContext),
372  .priv_class = &convolution_opencl_class,
378  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
379  .flags = AVFILTER_FLAG_HWDEVICE,
380 };
381 
382 #endif /* CONFIG_CONVOLUTION_OPENCL_FILTER */
383 
384 #if CONFIG_SOBEL_OPENCL_FILTER
385 
386 static const AVOption sobel_opencl_options[] = {
387  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS},
388  { "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 65535, FLAGS},
389  { "delta", "set delta", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=0}, -65535, 65535, FLAGS},
390  { NULL }
391 };
392 
393 AVFILTER_DEFINE_CLASS(sobel_opencl);
394 
396  .name = "sobel_opencl",
397  .description = NULL_IF_CONFIG_SMALL("Apply sobel operator"),
398  .priv_size = sizeof(ConvolutionOpenCLContext),
399  .priv_class = &sobel_opencl_class,
405  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
406  .flags = AVFILTER_FLAG_HWDEVICE,
407 };
408 
409 #endif /* CONFIG_SOBEL_OPENCL_FILTER */
410 
411 #if CONFIG_PREWITT_OPENCL_FILTER
412 
413 static const AVOption prewitt_opencl_options[] = {
414  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS},
415  { "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 65535, FLAGS},
416  { "delta", "set delta", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=0}, -65535, 65535, FLAGS},
417  { NULL }
418 };
419 
420 AVFILTER_DEFINE_CLASS(prewitt_opencl);
421 
423  .name = "prewitt_opencl",
424  .description = NULL_IF_CONFIG_SMALL("Apply prewitt operator"),
425  .priv_size = sizeof(ConvolutionOpenCLContext),
426  .priv_class = &prewitt_opencl_class,
432  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
433  .flags = AVFILTER_FLAG_HWDEVICE,
434 };
435 
436 #endif /* CONFIG_PREWITT_OPENCL_FILTER */
437 
438 #if CONFIG_ROBERTS_OPENCL_FILTER
439 
440 static const AVOption roberts_opencl_options[] = {
441  { "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=15}, 0, 15, FLAGS},
442  { "scale", "set scale", OFFSET(scale), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, 65535, FLAGS},
443  { "delta", "set delta", OFFSET(delta), AV_OPT_TYPE_FLOAT, {.dbl=0}, -65535, 65535, FLAGS},
444  { NULL }
445 };
446 
447 AVFILTER_DEFINE_CLASS(roberts_opencl);
448 
450  .name = "roberts_opencl",
451  .description = NULL_IF_CONFIG_SMALL("Apply roberts operator"),
452  .priv_size = sizeof(ConvolutionOpenCLContext),
453  .priv_class = &roberts_opencl_class,
459  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
460  .flags = AVFILTER_FLAG_HWDEVICE,
461 };
462 
463 #endif /* CONFIG_ROBERTS_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:112
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
convolution_opencl_filter_frame
static int convolution_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
Definition: vf_convolution_opencl.c:177
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:351
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1015
ConvolutionOpenCLContext::kernel
cl_kernel kernel
Definition: vf_convolution_opencl.c:42
matrix
Definition: vc1dsp.c:43
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:160
test::height
int height
Definition: vc1dsp.c:40
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:374
pixdesc.h
opencl.h
AVOption
AVOption.
Definition: opt.h:357
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
ConvolutionOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_convolution_opencl.c:39
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
planes
static const struct @438 planes[]
video.h
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:30
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:422
fail
#define fail()
Definition: checkasm.h:186
ConvolutionOpenCLContext::delta
cl_float delta
Definition: vf_convolution_opencl.c:55
ConvolutionOpenCLContext::dims
cl_int dims[4]
Definition: vf_convolution_opencl.c:49
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
convolution_opencl_inputs
static const AVFilterPad convolution_opencl_inputs[]
Definition: vf_convolution_opencl.c:328
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
avassert.h
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
convolution_opencl_outputs
static const AVFilterPad convolution_opencl_outputs[]
Definition: vf_convolution_opencl.c:337
ConvolutionOpenCLContext::matrix_sizes
cl_int matrix_sizes[4]
Definition: vf_convolution_opencl.c:48
float
float
Definition: af_crystalizer.c:121
av_strtok
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok().
Definition: avstring.c:178
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:40
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ConvolutionOpenCLContext
Definition: vf_convolution_opencl.c:38
ctx
AVFormatContext * ctx
Definition: movenc.c:49
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
arg
const char * arg
Definition: jacosubdec.c:67
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:709
ConvolutionOpenCLContext::matrix_str
char * matrix_str[4]
Definition: vf_convolution_opencl.c:45
ConvolutionOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_convolution_opencl.c:43
AV_PIX_FMT_OPENCL
@ AV_PIX_FMT_OPENCL
Hardware surfaces for OpenCL.
Definition: pixfmt.h:358
ConvolutionOpenCLContext::rdivs
cl_float rdivs[4]
Definition: vf_convolution_opencl.c:50
test::width
int width
Definition: vc1dsp.c:39
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:366
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
ff_source_convolution_cl
const char * ff_source_convolution_cl
ConvolutionOpenCLContext::initialised
int initialised
Definition: vf_convolution_opencl.c:41
AVFILTER_FLAG_HWDEVICE
#define AVFILTER_FLAG_HWDEVICE
The filter can create hardware frames using AVFilterContext.hw_device_ctx.
Definition: avfilter.h:138
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
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
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:323
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:248
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:172
uninit
static void uninit(AVBSFContext *ctx)
Definition: pcm_rechunk.c:68
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:256
common.h
delta
float delta
Definition: vorbis_enc_data.h:430
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
AVFilter
Filter definition.
Definition: avfilter.h:166
ConvolutionOpenCLContext::planes
cl_int planes
Definition: vf_convolution_opencl.c:53
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:132
ff_vf_roberts_opencl
const AVFilter ff_vf_roberts_opencl
ConvolutionOpenCLContext::scale
cl_float scale
Definition: vf_convolution_opencl.c:54
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:129
ff_vf_convolution_opencl
const AVFilter ff_vf_convolution_opencl
ConvolutionOpenCLContext::biases
cl_float biases[4]
Definition: vf_convolution_opencl.c:51
OFFSET
#define OFFSET(x)
Definition: vf_convolution_opencl.c:345
buffer
the frame and frame reference mechanism is intended to as much as expensive copies of that data while still allowing the filters to produce correct results The data is stored in buffers represented by AVFrame structures Several references can point to the same frame buffer
Definition: filter_design.txt:49
ff_vf_sobel_opencl
const AVFilter ff_vf_sobel_opencl
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:245
avfilter.h
convolution_opencl_init
static int convolution_opencl_init(AVFilterContext *avctx)
Definition: vf_convolution_opencl.c:59
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
FLAGS
#define FLAGS
Definition: vf_convolution_opencl.c:346
AVFilterContext
An instance of a filter.
Definition: avfilter.h:407
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
convolution_opencl_make_filter_params
static int convolution_opencl_make_filter_params(AVFilterContext *avctx)
Definition: vf_convolution_opencl.c:104
scale
static void scale(int *out, const int *in, const int w, const int h, const int shift)
Definition: intra.c:291
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:183
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:34
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
convolution_opencl_uninit
static av_cold void convolution_opencl_uninit(AVFilterContext *avctx)
Definition: vf_convolution_opencl.c:301
avstring.h
AVFilterContext::filter
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:410
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:249
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:2885
ff_vf_prewitt_opencl
const AVFilter ff_vf_prewitt_opencl
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:419