FFmpeg: libavfilter/vf_pad_opencl.c Source File

FFmpeg
vf_pad_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  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
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/colorspace.h"
20 #include "libavutil/eval.h"
21 #include "libavutil/opt.h"
22 #include "libavutil/imgutils.h"
23 #include "avfilter.h"
24 #include "drawutils.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "opencl.h"
28 #include "opencl_source.h"
29 #include "video.h"
30 
31  static const char *const var_names[] = {
32  "in_w", "iw",
33  "in_h", "ih",
34  "out_w", "ow",
35  "out_h", "oh",
36  "x",
37  "y",
38  "a",
39  "sar",
40  "dar",
41  NULL
42 };
43 
44  enum var_name {
45   VAR_IN_W, VAR_IW,
46   VAR_IN_H, VAR_IH,
47   VAR_OUT_W, VAR_OW,
48   VAR_OUT_H, VAR_OH,
49   VAR_X,
50   VAR_Y,
51   VAR_A,
52   VAR_SAR,
53   VAR_DAR,
54   VARS_NB
55 };
56 
57  typedef struct PadOpenCLContext {
58   OpenCLFilterContext ocf;
59   int initialized;
60   int is_rgb;
61   int is_packed;
62   int hsub, vsub;
63 
64   char *w_expr;
65   char *h_expr;
66   char *x_expr;
67   char *y_expr;
68   AVRational aspect;
69 
70   cl_command_queue command_queue;
71   cl_kernel kernel_pad;
72 
73   int w, h;
74   int x, y;
75   uint8_t pad_rgba[4];
76   uint8_t pad_color[4];
77   cl_float4 pad_color_float;
78   cl_int2 pad_pos;
79 } PadOpenCLContext;
80 
81  static int pad_opencl_init(AVFilterContext *avctx, AVFrame *input_frame)
82 {
83  PadOpenCLContext *ctx = avctx->priv;
84  AVHWFramesContext *input_frames_ctx = (AVHWFramesContext *)input_frame->hw_frames_ctx->data;
85  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(input_frames_ctx->sw_format);
86  uint8_t rgba_map[4];
87  cl_int cle;
88  int err;
89 
90  ff_fill_rgba_map(rgba_map, input_frames_ctx->sw_format);
91  ctx->is_rgb = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
92  ctx->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
93  ctx->hsub = desc->log2_chroma_w;
94  ctx->vsub = desc->log2_chroma_h;
95 
96  err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_pad, 1);
97  if (err < 0)
98  goto fail;
99 
100  ctx->command_queue = clCreateCommandQueue(
101  ctx->ocf.hwctx->context,
102  ctx->ocf.hwctx->device_id,
103  0,
104  &cle
105  );
106 
107  if (ctx->is_rgb) {
108  ctx->pad_color[rgba_map[0]] = ctx->pad_rgba[0];
109  ctx->pad_color[rgba_map[1]] = ctx->pad_rgba[1];
110  ctx->pad_color[rgba_map[2]] = ctx->pad_rgba[2];
111  ctx->pad_color[rgba_map[3]] = ctx->pad_rgba[3];
112  } else {
113  ctx->pad_color[0] = RGB_TO_Y_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2]);
114  ctx->pad_color[1] = RGB_TO_U_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
115  ctx->pad_color[2] = RGB_TO_V_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
116  ctx->pad_color[3] = ctx->pad_rgba[3];
117  }
118 
119  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL command queue %d.\n", cle);
120 
121  ctx->kernel_pad = clCreateKernel(ctx->ocf.program, "pad", &cle);
122  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create pad kernel: %d.\n", cle);
123 
124  for (int i = 0; i < 4; ++i) {
125  ctx->pad_color_float.s[i] = (float)ctx->pad_color[i] / 255.0;
126  }
127 
128  ctx->pad_pos.s[0] = ctx->x;
129  ctx->pad_pos.s[1] = ctx->y;
130 
131  ctx->initialized = 1;
132  return 0;
133 
134 fail:
135  if (ctx->command_queue)
136  clReleaseCommandQueue(ctx->command_queue);
137  if (ctx->kernel_pad)
138  clReleaseKernel(ctx->kernel_pad);
139  return err;
140 }
141 
142  static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
143 {
144  AVFilterContext *avctx = link->dst;
145  AVFilterLink *outlink = avctx->outputs[0];
146  PadOpenCLContext *pad_ctx = avctx->priv;
147  AVFrame *output_frame = NULL;
148  int err;
149  cl_int cle;
150  size_t global_work[2];
151  cl_mem src, dst;
152 
153  if (!input_frame->hw_frames_ctx)
154  return AVERROR(EINVAL);
155 
156  if (!pad_ctx->initialized) {
157  err = pad_opencl_init(avctx, input_frame);
158  if (err < 0)
159  goto fail;
160  }
161 
162  output_frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
163  if (!output_frame) {
164  err = AVERROR(ENOMEM);
165  goto fail;
166  }
167 
168  for (int p = 0; p < FF_ARRAY_ELEMS(output_frame->data); p++) {
169  cl_float4 pad_color_float;
170  cl_int2 pad_pos;
171 
172  if (pad_ctx->is_packed) {
173  pad_color_float = pad_ctx->pad_color_float;
174  } else {
175  pad_color_float.s[0] = pad_ctx->pad_color_float.s[p];
176  pad_color_float.s[1] = pad_ctx->pad_color_float.s[2];
177  }
178 
179  if (p > 0 && p < 3) {
180  pad_pos.s[0] = pad_ctx->pad_pos.s[0] >> pad_ctx->hsub;
181  pad_pos.s[1] = pad_ctx->pad_pos.s[1] >> pad_ctx->vsub;
182  } else {
183  pad_pos.s[0] = pad_ctx->pad_pos.s[0];
184  pad_pos.s[1] = pad_ctx->pad_pos.s[1];
185  }
186 
187  src = (cl_mem)input_frame->data[p];
188  dst = (cl_mem)output_frame->data[p];
189 
190  if (!dst)
191  break;
192 
193  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 0, cl_mem, &src);
194  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 1, cl_mem, &dst);
195  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 2, cl_float4, &pad_color_float);
196  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 3, cl_int2, &pad_pos);
197 
198  err = ff_opencl_filter_work_size_from_image(avctx, global_work, output_frame, p, 16);
199  if (err < 0)
200  goto fail;
201 
202  cle = clEnqueueNDRangeKernel(pad_ctx->command_queue, pad_ctx->kernel_pad, 2, NULL,
203  global_work, NULL, 0, NULL, NULL);
204 
205  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue pad kernel: %d.\n", cle);
206  }
207 
208  // Run queued kernel
209  cle = clFinish(pad_ctx->command_queue);
210  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
211 
212  err = av_frame_copy_props(output_frame, input_frame);
213  if (err < 0)
214  goto fail;
215 
216  av_frame_free(&input_frame);
217 
218  return ff_filter_frame(outlink, output_frame);
219 
220 fail:
221  clFinish(pad_ctx->command_queue);
222  av_frame_free(&input_frame);
223  av_frame_free(&output_frame);
224  return err;
225 }
226 
227  static av_cold void pad_opencl_uninit(AVFilterContext *avctx)
228 {
229  PadOpenCLContext *ctx = avctx->priv;
230  cl_int cle;
231 
232  if (ctx->kernel_pad) {
233  cle = clReleaseKernel(ctx->kernel_pad);
234  if (cle != CL_SUCCESS)
235  av_log(avctx, AV_LOG_ERROR, "Failed to release "
236  "kernel: %d.\n", cle);
237  }
238 
239  if (ctx->command_queue) {
240  cle = clReleaseCommandQueue(ctx->command_queue);
241  if (cle != CL_SUCCESS)
242  av_log(avctx, AV_LOG_ERROR, "Failed to release "
243  "command queue: %d.\n", cle);
244  }
245 
246  ff_opencl_filter_uninit(avctx);
247 }
248 
249  static int pad_opencl_config_output(AVFilterLink *outlink)
250 {
251  AVFilterContext *avctx = outlink->src;
252  AVFilterLink *inlink = avctx->inputs[0];
253  PadOpenCLContext *ctx = avctx->priv;
254  AVRational adjusted_aspect = ctx->aspect;
255  double var_values[VARS_NB], res;
256  int err, ret;
257  char *expr;
258 
259  var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
260  var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
261  var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
262  var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
263  var_values[VAR_A] = (double) inlink->w / inlink->h;
264  var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
265  (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
266  var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
267 
268  av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
269  var_names, var_values,
270  NULL, NULL, NULL, NULL, NULL, 0, ctx);
271  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
272  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->h_expr),
273  var_names, var_values,
274  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
275  return ret;
276  ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
277  if (!ctx->h)
278  var_values[VAR_OUT_H] = var_values[VAR_OH] = ctx->h = inlink->h;
279 
280  /* evaluate the width again, as it may depend on the evaluated output height */
281  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
282  var_names, var_values,
283  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
284  return ret;
285  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
286  if (!ctx->w)
287  var_values[VAR_OUT_W] = var_values[VAR_OW] = ctx->w = inlink->w;
288 
289  if (adjusted_aspect.num && adjusted_aspect.den) {
290  adjusted_aspect = av_div_q(adjusted_aspect, inlink->sample_aspect_ratio);
291  if (ctx->h < av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num)) {
292  ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num);
293  } else {
294  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = av_rescale(ctx->h, adjusted_aspect.num, adjusted_aspect.den);
295  }
296  }
297 
298  /* evaluate x and y */
299  av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
300  var_names, var_values,
301  NULL, NULL, NULL, NULL, NULL, 0, ctx);
302  ctx->x = var_values[VAR_X] = res;
303  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->y_expr),
304  var_names, var_values,
305  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
306  return ret;
307  ctx->y = var_values[VAR_Y] = res;
308  /* evaluate x again, as it may depend on the evaluated y value */
309  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
310  var_names, var_values,
311  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
312  return ret;
313  ctx->x = var_values[VAR_X] = res;
314 
315  if (ctx->x < 0 || ctx->x + inlink->w > ctx->w)
316  ctx->x = var_values[VAR_X] = (ctx->w - inlink->w) / 2;
317  if (ctx->y < 0 || ctx->y + inlink->h > ctx->h)
318  ctx->y = var_values[VAR_Y] = (ctx->h - inlink->h) / 2;
319 
320  /* sanity check params */
321  if (ctx->w < inlink->w || ctx->h < inlink->h) {
322  av_log(ctx, AV_LOG_ERROR, "Padded dimensions cannot be smaller than input dimensions.\n");
323  return AVERROR(EINVAL);
324  }
325 
326  if (ctx->w > avctx->inputs[0]->w) {
327  ctx->ocf.output_width = ctx->w;
328  } else {
329  ctx->ocf.output_width = avctx->inputs[0]->w;
330  }
331 
332  if (ctx->h > avctx->inputs[0]->h) {
333  ctx->ocf.output_height = ctx->h;
334  } else {
335  ctx->ocf.output_height = avctx->inputs[0]->h;
336  }
337 
338  if (ctx->x + avctx->inputs[0]->w > ctx->ocf.output_width ||
339  ctx->y + avctx->inputs[0]->h > ctx->ocf.output_height) {
340  return AVERROR(EINVAL);
341  }
342 
343  err = ff_opencl_filter_config_output(outlink);
344  if (err < 0)
345  return err;
346 
347  return 0;
348 }
349 
350  static const AVFilterPad pad_opencl_inputs[] = {
351  {
352  .name = "default",
353  .type = AVMEDIA_TYPE_VIDEO,
354  .filter_frame = filter_frame,
355  .config_props = &ff_opencl_filter_config_input,
356  },
357 };
358 
359  static const AVFilterPad pad_opencl_outputs[] = {
360  {
361  .name = "default",
362  .type = AVMEDIA_TYPE_VIDEO,
363  .config_props = &pad_opencl_config_output,
364  },
365 };
366 
367  #define OFFSET(x) offsetof(PadOpenCLContext, x)
368  #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
369 
370  static const AVOption pad_opencl_options[] = {
371  { "width", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
372  { "w", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
373  { "height", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
374  { "h", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
375  { "x", "set the x offset for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
376  { "y", "set the y offset for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
377  { "color", "set the color of the padded area border", OFFSET(pad_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS },
378  { "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, INT16_MAX, FLAGS },
379  { NULL }
380 };
381 
382 AVFILTER_DEFINE_CLASS(pad_opencl);
383 
384  const AVFilter ff_vf_pad_opencl = {
385  .name = "pad_opencl",
386  .description = NULL_IF_CONFIG_SMALL("Pad the input video."),
387  .priv_size = sizeof(PadOpenCLContext),
388  .priv_class = &pad_opencl_class,
389  .init = &ff_opencl_filter_init,
390  .uninit = &pad_opencl_uninit,
391  FILTER_INPUTS(pad_opencl_inputs),
392  FILTER_OUTPUTS(pad_opencl_outputs),
393  FILTER_SINGLE_PIXFMT(AV_PIX_FMT_OPENCL),
394  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE
395 };
PadOpenCLContext::w_expr
char * w_expr
Definition: vf_pad_opencl.c:64
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
PadOpenCLContext::x_expr
char * x_expr
Definition: vf_pad_opencl.c:66
PadOpenCLContext::hsub
int hsub
Definition: vf_pad_opencl.c:62
VAR_X
@ VAR_X
Definition: vf_pad_opencl.c:49
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:374
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:969
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2888
pad_opencl_inputs
static const AVFilterPad pad_opencl_inputs[]
Definition: vf_pad_opencl.c:350
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
av_div_q
AVRational av_div_q(AVRational b, AVRational c)
Divide one rational by another.
Definition: rational.c:88
PadOpenCLContext::kernel_pad
cl_kernel kernel_pad
Definition: vf_pad_opencl.c:71
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:99
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:330
VAR_IN_W
@ VAR_IN_W
Definition: vf_pad_opencl.c:45
VAR_OUT_W
@ VAR_OUT_W
Definition: vf_pad_opencl.c:47
opencl.h
AVOption
AVOption.
Definition: opt.h:251
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:157
VAR_Y
@ VAR_Y
Definition: vf_pad_opencl.c:50
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:165
filter_frame
static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
Definition: vf_pad_opencl.c:142
AV_OPT_TYPE_RATIONAL
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:230
video.h
PadOpenCLContext::x
int x
Definition: vf_pad_opencl.c:74
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:351
VAR_IH
@ VAR_IH
Definition: vf_pad_opencl.c:46
formats.h
PadOpenCLContext
Definition: vf_pad_opencl.c:57
pad_opencl_uninit
static av_cold void pad_opencl_uninit(AVFilterContext *avctx)
Definition: vf_pad_opencl.c:227
PadOpenCLContext::pad_rgba
uint8_t pad_rgba[4]
Definition: vf_pad_opencl.c:75
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:264
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:407
PadOpenCLContext::pad_pos
cl_int2 pad_pos
Definition: vf_pad_opencl.c:78
fail
#define fail()
Definition: checkasm.h:134
PadOpenCLContext::h_expr
char * h_expr
Definition: vf_pad_opencl.c:65
AVRational::num
int num
Numerator.
Definition: rational.h:59
PadOpenCLContext::h
int h
Definition: vf_pad_opencl.c:73
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:82
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:49
colorspace.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
VAR_A
@ VAR_A
Definition: vf_pad_opencl.c:51
float
float
Definition: af_crystalizer.c:122
RGB_TO_Y_BT709
#define RGB_TO_Y_BT709(r, g, b)
Definition: vf_pseudocolor.c:562
pad_opencl_init
static int pad_opencl_init(AVFilterContext *avctx, AVFrame *input_frame)
Definition: vf_pad_opencl.c:81
RGB_TO_U_BT709
#define RGB_TO_U_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:566
PadOpenCLContext::is_packed
int is_packed
Definition: vf_pad_opencl.c:61
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts_bsf.c:365
var_name
var_name
Definition: noise_bsf.c:46
ctx
AVFormatContext * ctx
Definition: movenc.c:48
PadOpenCLContext::aspect
AVRational aspect
Definition: vf_pad_opencl.c:68
NAN
#define NAN
Definition: mathematics.h:64
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:194
link
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 link
Definition: filter_design.txt:23
VAR_OUT_H
@ VAR_OUT_H
Definition: vf_pad_opencl.c:48
NULL
#define NULL
Definition: coverity.c:32
AVHWFramesContext::sw_format
enum AVPixelFormat sw_format
The pixel format identifying the actual data layout of the hardware frames.
Definition: hwcontext.h:222
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:594
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AV_OPT_TYPE_COLOR
@ AV_OPT_TYPE_COLOR
Definition: opt.h:240
AVFilterContext::inputs
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:400
pad_opencl_options
static const AVOption pad_opencl_options[]
Definition: vf_pad_opencl.c:370
PadOpenCLContext::y_expr
char * y_expr
Definition: vf_pad_opencl.c:67
double
double
Definition: af_crystalizer.c:132
VAR_SAR
@ VAR_SAR
Definition: vf_pad_opencl.c:52
AV_PIX_FMT_OPENCL
@ AV_PIX_FMT_OPENCL
Hardware surfaces for OpenCL.
Definition: pixfmt.h:355
VARS_NB
@ VARS_NB
Definition: vf_pad_opencl.c:54
PadOpenCLContext::vsub
int vsub
Definition: vf_pad_opencl.c:62
ff_vf_pad_opencl
const AVFilter ff_vf_pad_opencl
Definition: vf_pad_opencl.c:384
eval.h
RGB_TO_V_BT709
#define RGB_TO_V_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:570
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:115
av_expr_parse_and_eval
int av_expr_parse_and_eval(double *d, const char *s, const char *const *const_names, const double *const_values, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), void *opaque, int log_offset, void *log_ctx)
Parse and evaluate an expression.
Definition: eval.c:776
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
PadOpenCLContext::initialized
int initialized
Definition: vf_pad_opencl.c:59
output_frame
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
Definition: h264dec.c:838
VAR_IN_H
@ VAR_IN_H
Definition: vf_pad_opencl.c:46
opencl_source.h
pad_opencl_config_output
static int pad_opencl_config_output(AVFilterLink *outlink)
Definition: vf_pad_opencl.c:249
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
internal.h
FLAGS
#define FLAGS
Definition: vf_pad_opencl.c:368
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:184
PadOpenCLContext::pad_color_float
cl_float4 pad_color_float
Definition: vf_pad_opencl.c:77
PadOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_pad_opencl.c:58
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
VAR_DAR
@ VAR_DAR
Definition: vf_pad_opencl.c:53
var_names
static const char *const var_names[]
Definition: vf_pad_opencl.c:31
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:55
av_rescale
int64_t av_rescale(int64_t a, int64_t b, int64_t c)
Rescale a 64-bit integer with rounding to nearest.
Definition: mathematics.c:129
AVFilter
Filter definition.
Definition: avfilter.h:161
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:133
ret
ret
Definition: filter_design.txt:187
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(pad_opencl)
PadOpenCLContext::is_rgb
int is_rgb
Definition: vf_pad_opencl.c:60
AVFrame::hw_frames_ctx
AVBufferRef * hw_frames_ctx
For hwaccel-format frames, this should be a reference to the AVHWFramesContext describing the frame.
Definition: frame.h:678
VAR_OW
@ VAR_OW
Definition: vf_pad_opencl.c:47
AVRational::den
int den
Denominator.
Definition: rational.h:60
avfilter.h
pad_opencl_outputs
static const AVFilterPad pad_opencl_outputs[]
Definition: vf_pad_opencl.c:359
AV_PIX_FMT_FLAG_PLANAR
#define AV_PIX_FMT_FLAG_PLANAR
At least one pixel component is not in the first data plane.
Definition: pixdesc.h:132
OpenCLFilterContext
Definition: opencl.h:36
ff_opencl_filter_uninit
void ff_opencl_filter_uninit(AVFilterContext *avctx)
Uninitialise an OpenCL filter context.
Definition: opencl.c:142
PadOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_pad_opencl.c:70
PadOpenCLContext::w
int w
Definition: vf_pad_opencl.c:73
PadOpenCLContext::pad_color
uint8_t pad_color[4]
Definition: vf_pad_opencl.c:76
PadOpenCLContext::y
int y
Definition: vf_pad_opencl.c:74
AVFilterContext
An instance of a filter.
Definition: avfilter.h:392
desc
const char * desc
Definition: libsvtav1.c:83
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
FILTER_OUTPUTS
#define FILTER_OUTPUTS(array)
Definition: internal.h:195
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
ff_fill_rgba_map
int ff_fill_rgba_map(uint8_t *rgba_map, enum AVPixelFormat pix_fmt)
Definition: drawutils.c:35
imgutils.h
VAR_IW
@ VAR_IW
Definition: vf_pad_opencl.c:45
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
OFFSET
#define OFFSET(x)
Definition: vf_pad_opencl.c:367
uninit
static av_cold int uninit(AVCodecContext *avctx)
Definition: crystalhd.c:285
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
drawutils.h
ff_opencl_source_pad
const char * ff_opencl_source_pad
VAR_OH
@ VAR_OH
Definition: vf_pad_opencl.c:48
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:404
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