FFmpeg
vf_unsharp_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
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
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8  *
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12  * Lesser General Public License for more details.
13  *
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15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include "libavutil/common.h"
20 #include "libavutil/imgutils.h"
21 #include "libavutil/mem.h"
22 #include "libavutil/opt.h"
23 #include "libavutil/pixdesc.h"
24 
25 #include "avfilter.h"
26 #include "internal.h"
27 #include "opencl.h"
28 #include "opencl_source.h"
29 #include "video.h"
30 
31 #define MAX_DIAMETER 23
32 
33 typedef struct UnsharpOpenCLContext {
35 
37  cl_kernel kernel;
38  cl_command_queue command_queue;
39 
40  float luma_size_x;
41  float luma_size_y;
42  float luma_amount;
46 
47  int global;
48 
49  int nb_planes;
50  struct {
53 
54  cl_mem matrix;
55  cl_mem coef_x;
56  cl_mem coef_y;
57 
58  cl_int size_x;
59  cl_int size_y;
60  cl_float amount;
61  cl_float threshold;
62  } plane[4];
64 
65 
67 {
68  UnsharpOpenCLContext *ctx = avctx->priv;
69  cl_int cle;
70  int err;
71 
73  if (err < 0)
74  goto fail;
75 
76  ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
77  ctx->ocf.hwctx->device_id,
78  0, &cle);
79  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL "
80  "command queue %d.\n", cle);
81 
82  // Use global kernel if mask size will be too big for the local store..
83  ctx->global = (ctx->luma_size_x > 17.0f ||
84  ctx->luma_size_y > 17.0f ||
85  ctx->chroma_size_x > 17.0f ||
86  ctx->chroma_size_y > 17.0f);
87 
88  ctx->kernel = clCreateKernel(ctx->ocf.program,
89  ctx->global ? "unsharp_global"
90  : "unsharp_local", &cle);
91  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create kernel %d.\n", cle);
92 
93  ctx->initialised = 1;
94  return 0;
95 
96 fail:
97  if (ctx->command_queue)
98  clReleaseCommandQueue(ctx->command_queue);
99  if (ctx->kernel)
100  clReleaseKernel(ctx->kernel);
101  return err;
102 }
103 
105 {
106  UnsharpOpenCLContext *ctx = avctx->priv;
107  const AVPixFmtDescriptor *desc;
108  float *matrix;
109  double val, sum;
110  cl_int cle;
111  cl_mem buffer;
112  size_t matrix_bytes;
113  float diam_x, diam_y, amount;
114  int err, p, x, y, size_x, size_y;
115 
116  desc = av_pix_fmt_desc_get(ctx->ocf.output_format);
117 
118  ctx->nb_planes = 0;
119  for (p = 0; p < desc->nb_components; p++)
120  ctx->nb_planes = FFMAX(ctx->nb_planes, desc->comp[p].plane + 1);
121 
122  for (p = 0; p < ctx->nb_planes; p++) {
123  if (p == 0 || (desc->flags & AV_PIX_FMT_FLAG_RGB)) {
124  diam_x = ctx->luma_size_x;
125  diam_y = ctx->luma_size_y;
126  amount = ctx->luma_amount;
127  } else {
128  diam_x = ctx->chroma_size_x;
129  diam_y = ctx->chroma_size_y;
130  amount = ctx->chroma_amount;
131  }
132  size_x = (int)ceil(diam_x) | 1;
133  size_y = (int)ceil(diam_y) | 1;
134  matrix_bytes = size_x * size_y * sizeof(float);
135 
136  matrix = av_malloc(matrix_bytes);
137  if (!matrix) {
138  err = AVERROR(ENOMEM);
139  goto fail;
140  }
141 
142  sum = 0.0;
143  for (x = 0; x < size_x; x++) {
144  double dx = (double)(x - size_x / 2) / diam_x;
145  sum += ctx->plane[p].blur_x[x] = exp(-16.0 * (dx * dx));
146  }
147  for (x = 0; x < size_x; x++)
148  ctx->plane[p].blur_x[x] /= sum;
149 
150  sum = 0.0;
151  for (y = 0; y < size_y; y++) {
152  double dy = (double)(y - size_y / 2) / diam_y;
153  sum += ctx->plane[p].blur_y[y] = exp(-16.0 * (dy * dy));
154  }
155  for (y = 0; y < size_y; y++)
156  ctx->plane[p].blur_y[y] /= sum;
157 
158  for (y = 0; y < size_y; y++) {
159  for (x = 0; x < size_x; x++) {
160  val = ctx->plane[p].blur_x[x] * ctx->plane[p].blur_y[y];
161  matrix[y * size_x + x] = val;
162  }
163  }
164 
165  if (ctx->global) {
166  buffer = clCreateBuffer(ctx->ocf.hwctx->context,
167  CL_MEM_READ_ONLY |
168  CL_MEM_COPY_HOST_PTR |
169  CL_MEM_HOST_NO_ACCESS,
170  matrix_bytes, matrix, &cle);
171  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create matrix buffer: "
172  "%d.\n", cle);
173  ctx->plane[p].matrix = buffer;
174  } else {
175  buffer = clCreateBuffer(ctx->ocf.hwctx->context,
176  CL_MEM_READ_ONLY |
177  CL_MEM_COPY_HOST_PTR |
178  CL_MEM_HOST_NO_ACCESS,
179  sizeof(ctx->plane[p].blur_x),
180  ctx->plane[p].blur_x, &cle);
181  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create x-coef buffer: "
182  "%d.\n", cle);
183  ctx->plane[p].coef_x = buffer;
184 
185  buffer = clCreateBuffer(ctx->ocf.hwctx->context,
186  CL_MEM_READ_ONLY |
187  CL_MEM_COPY_HOST_PTR |
188  CL_MEM_HOST_NO_ACCESS,
189  sizeof(ctx->plane[p].blur_y),
190  ctx->plane[p].blur_y, &cle);
191  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create y-coef buffer: "
192  "%d.\n", cle);
193  ctx->plane[p].coef_y = buffer;
194  }
195 
196  av_freep(&matrix);
197 
198  ctx->plane[p].size_x = size_x;
199  ctx->plane[p].size_y = size_y;
200  ctx->plane[p].amount = amount;
201  }
202 
203  err = 0;
204 fail:
205  av_freep(&matrix);
206  return err;
207 }
208 
210 {
211  AVFilterContext *avctx = inlink->dst;
212  AVFilterLink *outlink = avctx->outputs[0];
213  UnsharpOpenCLContext *ctx = avctx->priv;
214  AVFrame *output = NULL;
215  cl_int cle;
216  size_t global_work[2];
217  size_t local_work[2];
218  cl_mem src, dst;
219  int err, p;
220 
221  av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
222  av_get_pix_fmt_name(input->format),
223  input->width, input->height, input->pts);
224 
225  if (!input->hw_frames_ctx)
226  return AVERROR(EINVAL);
227 
228  if (!ctx->initialised) {
229  err = unsharp_opencl_init(avctx);
230  if (err < 0)
231  goto fail;
232 
234  if (err < 0)
235  goto fail;
236  }
237 
238  output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
239  if (!output) {
240  err = AVERROR(ENOMEM);
241  goto fail;
242  }
243 
244  for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
245  src = (cl_mem) input->data[p];
246  dst = (cl_mem)output->data[p];
247 
248  if (!dst)
249  break;
250 
251  CL_SET_KERNEL_ARG(ctx->kernel, 0, cl_mem, &dst);
252  CL_SET_KERNEL_ARG(ctx->kernel, 1, cl_mem, &src);
253  CL_SET_KERNEL_ARG(ctx->kernel, 2, cl_int, &ctx->plane[p].size_x);
254  CL_SET_KERNEL_ARG(ctx->kernel, 3, cl_int, &ctx->plane[p].size_y);
255  CL_SET_KERNEL_ARG(ctx->kernel, 4, cl_float, &ctx->plane[p].amount);
256 
257  if (ctx->global) {
258  CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].matrix);
259  } else {
260  CL_SET_KERNEL_ARG(ctx->kernel, 5, cl_mem, &ctx->plane[p].coef_x);
261  CL_SET_KERNEL_ARG(ctx->kernel, 6, cl_mem, &ctx->plane[p].coef_y);
262  }
263 
264  err = ff_opencl_filter_work_size_from_image(avctx, global_work, output, p,
265  ctx->global ? 0 : 16);
266  if (err < 0)
267  goto fail;
268 
269  local_work[0] = 16;
270  local_work[1] = 16;
271 
272  av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
273  "(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
274  p, global_work[0], global_work[1]);
275 
276  cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel, 2, NULL,
277  global_work, ctx->global ? NULL : local_work,
278  0, NULL, NULL);
279  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue kernel: %d.\n", cle);
280  }
281 
282  cle = clFinish(ctx->command_queue);
283  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
284 
286  if (err < 0)
287  goto fail;
288 
290 
291  av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
292  av_get_pix_fmt_name(output->format),
293  output->width, output->height, output->pts);
294 
295  return ff_filter_frame(outlink, output);
296 
297 fail:
298  clFinish(ctx->command_queue);
301  return err;
302 }
303 
305 {
306  UnsharpOpenCLContext *ctx = avctx->priv;
307  cl_int cle;
308  int i;
309 
310  for (i = 0; i < ctx->nb_planes; i++) {
311  if (ctx->plane[i].matrix)
312  clReleaseMemObject(ctx->plane[i].matrix);
313  if (ctx->plane[i].coef_x)
314  clReleaseMemObject(ctx->plane[i].coef_x);
315  if (ctx->plane[i].coef_y)
316  clReleaseMemObject(ctx->plane[i].coef_y);
317  }
318 
319  if (ctx->kernel) {
320  cle = clReleaseKernel(ctx->kernel);
321  if (cle != CL_SUCCESS)
322  av_log(avctx, AV_LOG_ERROR, "Failed to release "
323  "kernel: %d.\n", cle);
324  }
325 
326  if (ctx->command_queue) {
327  cle = clReleaseCommandQueue(ctx->command_queue);
328  if (cle != CL_SUCCESS)
329  av_log(avctx, AV_LOG_ERROR, "Failed to release "
330  "command queue: %d.\n", cle);
331  }
332 
334 }
335 
336 #define OFFSET(x) offsetof(UnsharpOpenCLContext, x)
337 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
339  { "luma_msize_x", "Set luma mask horizontal diameter (pixels)",
340  OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
341  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
342  { "lx", "Set luma mask horizontal diameter (pixels)",
343  OFFSET(luma_size_x), AV_OPT_TYPE_FLOAT,
344  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
345  { "luma_msize_y", "Set luma mask vertical diameter (pixels)",
346  OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
347  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
348  { "ly", "Set luma mask vertical diameter (pixels)",
349  OFFSET(luma_size_y), AV_OPT_TYPE_FLOAT,
350  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
351  { "luma_amount", "Set luma amount (multiplier)",
352  OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
353  { .dbl = 1.0 }, -10, 10, FLAGS },
354  { "la", "Set luma amount (multiplier)",
355  OFFSET(luma_amount), AV_OPT_TYPE_FLOAT,
356  { .dbl = 1.0 }, -10, 10, FLAGS },
357 
358  { "chroma_msize_x", "Set chroma mask horizontal diameter (pixels after subsampling)",
359  OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
360  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
361  { "cx", "Set chroma mask horizontal diameter (pixels after subsampling)",
362  OFFSET(chroma_size_x), AV_OPT_TYPE_FLOAT,
363  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
364  { "chroma_msize_y", "Set chroma mask vertical diameter (pixels after subsampling)",
365  OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
366  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
367  { "cy", "Set chroma mask vertical diameter (pixels after subsampling)",
368  OFFSET(chroma_size_y), AV_OPT_TYPE_FLOAT,
369  { .dbl = 5.0 }, 1, MAX_DIAMETER, FLAGS },
370  { "chroma_amount", "Set chroma amount (multiplier)",
371  OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
372  { .dbl = 0.0 }, -10, 10, FLAGS },
373  { "ca", "Set chroma amount (multiplier)",
374  OFFSET(chroma_amount), AV_OPT_TYPE_FLOAT,
375  { .dbl = 0.0 }, -10, 10, FLAGS },
376 
377  { NULL }
378 };
379 
380 AVFILTER_DEFINE_CLASS(unsharp_opencl);
381 
383  {
384  .name = "default",
385  .type = AVMEDIA_TYPE_VIDEO,
386  .filter_frame = &unsharp_opencl_filter_frame,
387  .config_props = &ff_opencl_filter_config_input,
388  },
389  { NULL }
390 };
391 
393  {
394  .name = "default",
395  .type = AVMEDIA_TYPE_VIDEO,
396  .config_props = &ff_opencl_filter_config_output,
397  },
398  { NULL }
399 };
400 
402  .name = "unsharp_opencl",
403  .description = NULL_IF_CONFIG_SMALL("Apply unsharp mask to input video"),
404  .priv_size = sizeof(UnsharpOpenCLContext),
405  .priv_class = &unsharp_opencl_class,
411  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
412 };
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:97
UnsharpOpenCLContext::chroma_amount
float chroma_amount
Definition: vf_unsharp_opencl.c:45
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
UnsharpOpenCLContext::amount
cl_float amount
Definition: vf_unsharp_opencl.c:60
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:339
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:978
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
UnsharpOpenCLContext::matrix
cl_mem matrix
Definition: vf_unsharp_opencl.c:54
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
UnsharpOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_unsharp_opencl.c:38
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
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
pixdesc.h
opencl.h
AVOption
AVOption.
Definition: opt.h:247
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:171
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:149
UnsharpOpenCLContext::threshold
cl_float threshold
Definition: vf_unsharp_opencl.c:61
video.h
unsharp_opencl_options
static const AVOption unsharp_opencl_options[]
Definition: vf_unsharp_opencl.c:338
UnsharpOpenCLContext::blur_x
float blur_x[MAX_DIAMETER]
Definition: vf_unsharp_opencl.c:51
MAX_DIAMETER
#define MAX_DIAMETER
Definition: vf_unsharp_opencl.c:31
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
OFFSET
#define OFFSET(x)
Definition: vf_unsharp_opencl.c:336
unsharp_opencl_filter_frame
static int unsharp_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
Definition: vf_unsharp_opencl.c:209
UnsharpOpenCLContext::size_y
cl_int size_y
Definition: vf_unsharp_opencl.c:59
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:278
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:348
fail
#define fail()
Definition: checkasm.h:136
UnsharpOpenCLContext::luma_size_x
float luma_size_x
Definition: vf_unsharp_opencl.c:40
val
static double val(void *priv, double ch)
Definition: aeval.c:75
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:96
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
ceil
static __device__ float ceil(float a)
Definition: cuda_runtime.h:176
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
unsharp_opencl_outputs
static const AVFilterPad unsharp_opencl_outputs[]
Definition: vf_unsharp_opencl.c:392
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
av_cold
#define av_cold
Definition: attributes.h:90
inputs
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several inputs
Definition: filter_design.txt:243
UnsharpOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_unsharp_opencl.c:34
UnsharpOpenCLContext::chroma_size_x
float chroma_size_x
Definition: vf_unsharp_opencl.c:43
unsharp_opencl_make_filter_params
static int unsharp_opencl_make_filter_params(AVFilterContext *avctx)
Definition: vf_unsharp_opencl.c:104
ff_vf_unsharp_opencl
const AVFilter ff_vf_unsharp_opencl
Definition: vf_unsharp_opencl.c:401
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static const AVFilterPad outputs[]
Definition: af_acontrast.c:203
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
UnsharpOpenCLContext::global
int global
Definition: vf_unsharp_opencl.c:47
UnsharpOpenCLContext::luma_amount
float luma_amount
Definition: vf_unsharp_opencl.c:42
UnsharpOpenCLContext::chroma_size_y
float chroma_size_y
Definition: vf_unsharp_opencl.c:44
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
src
#define src
Definition: vp8dsp.c:255
UnsharpOpenCLContext::blur_y
float blur_y[MAX_DIAMETER]
Definition: vf_unsharp_opencl.c:52
FLAGS
#define FLAGS
Definition: vf_unsharp_opencl.c:337
exp
int8_t exp
Definition: eval.c:72
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
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:116
AV_PIX_FMT_FLAG_RGB
#define AV_PIX_FMT_FLAG_RGB
The pixel format contains RGB-like data (as opposed to YUV/grayscale).
Definition: pixdesc.h:136
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static int unsharp_opencl_init(AVFilterContext *avctx)
Definition: vf_unsharp_opencl.c:66
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(unsharp_opencl)
UnsharpOpenCLContext
Definition: vf_unsharp_opencl.c:33
UnsharpOpenCLContext::luma_size_y
float luma_size_y
Definition: vf_unsharp_opencl.c:41
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:60
internal.h
AV_OPT_TYPE_FLOAT
@ AV_OPT_TYPE_FLOAT
Definition: opt.h:227
UnsharpOpenCLContext::plane
struct UnsharpOpenCLContext::@234 plane[4]
UnsharpOpenCLContext::initialised
int initialised
Definition: vf_unsharp_opencl.c:36
UnsharpOpenCLContext::size_x
cl_int size_x
Definition: vf_unsharp_opencl.c:58
i
int i
Definition: input.c:406
common.h
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
AVFilter
Filter definition.
Definition: avfilter.h:145
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:147
UnsharpOpenCLContext::coef_x
cl_mem coef_x
Definition: vf_unsharp_opencl.c:55
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:192
UnsharpOpenCLContext::nb_planes
int nb_planes
Definition: vf_unsharp_opencl.c:49
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
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:156
AVFilterContext
An instance of a filter.
Definition: avfilter.h:333
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
mem.h
unsharp_opencl_uninit
static av_cold void unsharp_opencl_uninit(AVFilterContext *avctx)
Definition: vf_unsharp_opencl.c:304
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: aeval.c:243
imgutils.h
ff_opencl_source_unsharp
const char * ff_opencl_source_unsharp
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
UnsharpOpenCLContext::coef_y
cl_mem coef_y
Definition: vf_unsharp_opencl.c:56
UnsharpOpenCLContext::kernel
cl_kernel kernel
Definition: vf_unsharp_opencl.c:37
int
int
Definition: ffmpeg_filter.c:156
ff_opencl_filter_query_formats
int ff_opencl_filter_query_formats(AVFilterContext *avctx)
Return that all inputs and outputs support only AV_PIX_FMT_OPENCL.
Definition: opencl.c:28
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:2460
unsharp_opencl_inputs
static const AVFilterPad unsharp_opencl_inputs[]
Definition: vf_unsharp_opencl.c:382
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:345