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  *
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12  * Lesser General Public License for more details.
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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/colorspace.h"
20 #include "libavutil/eval.h"
21 #include "libavutil/opt.h"
22 #include "libavutil/pixdesc.h"
23 #include "avfilter.h"
24 #include "drawutils.h"
25 #include "internal.h"
26 #include "opencl.h"
27 #include "opencl_source.h"
28 #include "video.h"
29 
30 static const char *const var_names[] = {
31  "in_w", "iw",
32  "in_h", "ih",
33  "out_w", "ow",
34  "out_h", "oh",
35  "x",
36  "y",
37  "a",
38  "sar",
39  "dar",
40  NULL
41 };
42 
43 enum var_name {
54 };
55 
56 typedef struct PadOpenCLContext {
59  int is_rgb;
60  int is_packed;
61  int hsub, vsub;
62 
63  char *w_expr;
64  char *h_expr;
65  char *x_expr;
66  char *y_expr;
68 
69  cl_command_queue command_queue;
70  cl_kernel kernel_pad;
71 
72  int w, h;
73  int x, y;
74  uint8_t pad_rgba[4];
75  uint8_t pad_color[4];
76  cl_float4 pad_color_float;
77  cl_int2 pad_pos;
79 
80 static int pad_opencl_init(AVFilterContext *avctx, AVFrame *input_frame)
81 {
82  PadOpenCLContext *ctx = avctx->priv;
83  AVHWFramesContext *input_frames_ctx = (AVHWFramesContext *)input_frame->hw_frames_ctx->data;
84  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(input_frames_ctx->sw_format);
85  uint8_t rgba_map[4];
86  cl_int cle;
87  int err;
88 
89  ff_fill_rgba_map(rgba_map, input_frames_ctx->sw_format);
90  ctx->is_rgb = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
91  ctx->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
92  ctx->hsub = desc->log2_chroma_w;
93  ctx->vsub = desc->log2_chroma_h;
94 
96  if (err < 0)
97  goto fail;
98 
99  ctx->command_queue = clCreateCommandQueue(
100  ctx->ocf.hwctx->context,
101  ctx->ocf.hwctx->device_id,
102  0,
103  &cle
104  );
105 
106  if (ctx->is_rgb) {
107  ctx->pad_color[rgba_map[0]] = ctx->pad_rgba[0];
108  ctx->pad_color[rgba_map[1]] = ctx->pad_rgba[1];
109  ctx->pad_color[rgba_map[2]] = ctx->pad_rgba[2];
110  ctx->pad_color[rgba_map[3]] = ctx->pad_rgba[3];
111  } else {
112  ctx->pad_color[0] = RGB_TO_Y_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2]);
113  ctx->pad_color[1] = RGB_TO_U_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
114  ctx->pad_color[2] = RGB_TO_V_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
115  ctx->pad_color[3] = ctx->pad_rgba[3];
116  }
117 
118  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL command queue %d.\n", cle);
119 
120  ctx->kernel_pad = clCreateKernel(ctx->ocf.program, "pad", &cle);
121  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create pad kernel: %d.\n", cle);
122 
123  for (int i = 0; i < 4; ++i) {
124  ctx->pad_color_float.s[i] = (float)ctx->pad_color[i] / 255.0;
125  }
126 
127  ctx->pad_pos.s[0] = ctx->x;
128  ctx->pad_pos.s[1] = ctx->y;
129 
130  ctx->initialized = 1;
131  return 0;
132 
133 fail:
134  if (ctx->command_queue)
135  clReleaseCommandQueue(ctx->command_queue);
136  if (ctx->kernel_pad)
137  clReleaseKernel(ctx->kernel_pad);
138  return err;
139 }
140 
141 static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
142 {
143  AVFilterContext *avctx = link->dst;
144  AVFilterLink *outlink = avctx->outputs[0];
145  PadOpenCLContext *pad_ctx = avctx->priv;
147  int err;
148  cl_int cle;
149  size_t global_work[2];
150  cl_mem src, dst;
151 
152  if (!input_frame->hw_frames_ctx)
153  return AVERROR(EINVAL);
154 
155  if (!pad_ctx->initialized) {
156  err = pad_opencl_init(avctx, input_frame);
157  if (err < 0)
158  goto fail;
159  }
160 
161  output_frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
162  if (!output_frame) {
163  err = AVERROR(ENOMEM);
164  goto fail;
165  }
166 
167  for (int p = 0; p < FF_ARRAY_ELEMS(output_frame->data); p++) {
168  cl_float4 pad_color_float;
169  cl_int2 pad_pos;
170 
171  if (pad_ctx->is_packed) {
172  pad_color_float = pad_ctx->pad_color_float;
173  } else {
174  pad_color_float.s[0] = pad_ctx->pad_color_float.s[p];
175  pad_color_float.s[1] = pad_ctx->pad_color_float.s[2];
176  }
177 
178  if (p > 0 && p < 3) {
179  pad_pos.s[0] = pad_ctx->pad_pos.s[0] >> pad_ctx->hsub;
180  pad_pos.s[1] = pad_ctx->pad_pos.s[1] >> pad_ctx->vsub;
181  } else {
182  pad_pos.s[0] = pad_ctx->pad_pos.s[0];
183  pad_pos.s[1] = pad_ctx->pad_pos.s[1];
184  }
185 
186  src = (cl_mem)input_frame->data[p];
187  dst = (cl_mem)output_frame->data[p];
188 
189  if (!dst)
190  break;
191 
192  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 0, cl_mem, &src);
193  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 1, cl_mem, &dst);
194  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 2, cl_float4, &pad_color_float);
195  CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 3, cl_int2, &pad_pos);
196 
197  err = ff_opencl_filter_work_size_from_image(avctx, global_work, output_frame, p, 16);
198  if (err < 0)
199  goto fail;
200 
201  cle = clEnqueueNDRangeKernel(pad_ctx->command_queue, pad_ctx->kernel_pad, 2, NULL,
202  global_work, NULL, 0, NULL, NULL);
203 
204  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue pad kernel: %d.\n", cle);
205  }
206 
207  // Run queued kernel
208  cle = clFinish(pad_ctx->command_queue);
209  CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
210 
211  err = av_frame_copy_props(output_frame, input_frame);
212  if (err < 0)
213  goto fail;
214 
215  av_frame_free(&input_frame);
216 
217  return ff_filter_frame(outlink, output_frame);
218 
219 fail:
220  clFinish(pad_ctx->command_queue);
221  av_frame_free(&input_frame);
223  return err;
224 }
225 
227 {
228  PadOpenCLContext *ctx = avctx->priv;
229  cl_int cle;
230 
231  if (ctx->kernel_pad) {
232  cle = clReleaseKernel(ctx->kernel_pad);
233  if (cle != CL_SUCCESS)
234  av_log(avctx, AV_LOG_ERROR, "Failed to release "
235  "kernel: %d.\n", cle);
236  }
237 
238  if (ctx->command_queue) {
239  cle = clReleaseCommandQueue(ctx->command_queue);
240  if (cle != CL_SUCCESS)
241  av_log(avctx, AV_LOG_ERROR, "Failed to release "
242  "command queue: %d.\n", cle);
243  }
244 
246 }
247 
249 {
250  AVFilterContext *avctx = outlink->src;
251  AVFilterLink *inlink = avctx->inputs[0];
252  PadOpenCLContext *ctx = avctx->priv;
253  AVRational adjusted_aspect = ctx->aspect;
254  double var_values[VARS_NB], res;
255  int err, ret;
256  char *expr;
257 
258  var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
259  var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
260  var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
261  var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
262  var_values[VAR_A] = (double) inlink->w / inlink->h;
263  var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
264  (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
265  var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
266 
267  av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
268  var_names, var_values,
269  NULL, NULL, NULL, NULL, NULL, 0, ctx);
270  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
271  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->h_expr),
272  var_names, var_values,
273  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
274  return ret;
275  ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
276  if (!ctx->h)
277  var_values[VAR_OUT_H] = var_values[VAR_OH] = ctx->h = inlink->h;
278 
279  /* evaluate the width again, as it may depend on the evaluated output height */
280  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
281  var_names, var_values,
282  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
283  return ret;
284  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
285  if (!ctx->w)
286  var_values[VAR_OUT_W] = var_values[VAR_OW] = ctx->w = inlink->w;
287 
288  if (adjusted_aspect.num && adjusted_aspect.den) {
289  adjusted_aspect = av_div_q(adjusted_aspect, inlink->sample_aspect_ratio);
290  if (ctx->h < av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num)) {
291  ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num);
292  } else {
293  ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = av_rescale(ctx->h, adjusted_aspect.num, adjusted_aspect.den);
294  }
295  }
296 
297  /* evaluate x and y */
298  av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
299  var_names, var_values,
300  NULL, NULL, NULL, NULL, NULL, 0, ctx);
301  ctx->x = var_values[VAR_X] = res;
302  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->y_expr),
303  var_names, var_values,
304  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
305  return ret;
306  ctx->y = var_values[VAR_Y] = res;
307  /* evaluate x again, as it may depend on the evaluated y value */
308  if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
309  var_names, var_values,
310  NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
311  return ret;
312  ctx->x = var_values[VAR_X] = res;
313 
314  if (ctx->x < 0 || ctx->x + inlink->w > ctx->w)
315  ctx->x = var_values[VAR_X] = (ctx->w - inlink->w) / 2;
316  if (ctx->y < 0 || ctx->y + inlink->h > ctx->h)
317  ctx->y = var_values[VAR_Y] = (ctx->h - inlink->h) / 2;
318 
319  /* sanity check params */
320  if (ctx->w < inlink->w || ctx->h < inlink->h) {
321  av_log(ctx, AV_LOG_ERROR, "Padded dimensions cannot be smaller than input dimensions.\n");
322  return AVERROR(EINVAL);
323  }
324 
325  if (ctx->w > avctx->inputs[0]->w) {
326  ctx->ocf.output_width = ctx->w;
327  } else {
328  ctx->ocf.output_width = avctx->inputs[0]->w;
329  }
330 
331  if (ctx->h > avctx->inputs[0]->h) {
332  ctx->ocf.output_height = ctx->h;
333  } else {
334  ctx->ocf.output_height = avctx->inputs[0]->h;
335  }
336 
337  if (ctx->x + avctx->inputs[0]->w > ctx->ocf.output_width ||
338  ctx->y + avctx->inputs[0]->h > ctx->ocf.output_height) {
339  return AVERROR(EINVAL);
340  }
341 
342  err = ff_opencl_filter_config_output(outlink);
343  if (err < 0)
344  return err;
345 
346  return 0;
347 }
348 
349 static const AVFilterPad pad_opencl_inputs[] = {
350  {
351  .name = "default",
352  .type = AVMEDIA_TYPE_VIDEO,
353  .filter_frame = filter_frame,
354  .config_props = &ff_opencl_filter_config_input,
355  },
356 };
357 
358 static const AVFilterPad pad_opencl_outputs[] = {
359  {
360  .name = "default",
361  .type = AVMEDIA_TYPE_VIDEO,
362  .config_props = &pad_opencl_config_output,
363  },
364 };
365 
366 #define OFFSET(x) offsetof(PadOpenCLContext, x)
367 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
368 
369 static const AVOption pad_opencl_options[] = {
370  { "width", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
371  { "w", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
372  { "height", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
373  { "h", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
374  { "x", "set the x offset for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
375  { "y", "set the y offset for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
376  { "color", "set the color of the padded area border", OFFSET(pad_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS },
377  { "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, INT16_MAX, FLAGS },
378  { NULL }
379 };
380 
381 AVFILTER_DEFINE_CLASS(pad_opencl);
382 
384  .name = "pad_opencl",
385  .description = NULL_IF_CONFIG_SMALL("Pad the input video."),
386  .priv_size = sizeof(PadOpenCLContext),
387  .priv_class = &pad_opencl_class,
393  .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
394  .flags = AVFILTER_FLAG_HWDEVICE,
395 };
PadOpenCLContext::w_expr
char * w_expr
Definition: vf_pad_opencl.c:63
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
PadOpenCLContext::x_expr
char * x_expr
Definition: vf_pad_opencl.c:65
PadOpenCLContext::hsub
int hsub
Definition: vf_pad_opencl.c:61
VAR_X
@ VAR_X
Definition: vf_pad_opencl.c:48
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
var_name
var_name
Definition: noise.c:46
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:343
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1007
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2968
pad_opencl_inputs
static const AVFilterPad pad_opencl_inputs[]
Definition: vf_pad_opencl.c:349
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:70
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:100
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:340
pixdesc.h
VAR_IN_W
@ VAR_IN_W
Definition: vf_pad_opencl.c:44
VAR_OUT_W
@ VAR_OUT_W
Definition: vf_pad_opencl.c:46
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:156
VAR_Y
@ VAR_Y
Definition: vf_pad_opencl.c:49
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:170
filter_frame
static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
Definition: vf_pad_opencl.c:141
AV_OPT_TYPE_RATIONAL
@ AV_OPT_TYPE_RATIONAL
Definition: opt.h:230
video.h
PadOpenCLContext::x
int x
Definition: vf_pad_opencl.c:73
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:361
VAR_IH
@ VAR_IH
Definition: vf_pad_opencl.c:45
PadOpenCLContext
Definition: vf_pad_opencl.c:56
pad_opencl_uninit
static av_cold void pad_opencl_uninit(AVFilterContext *avctx)
Definition: vf_pad_opencl.c:226
PadOpenCLContext::pad_rgba
uint8_t pad_rgba[4]
Definition: vf_pad_opencl.c:74
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:424
PadOpenCLContext::pad_pos
cl_int2 pad_pos
Definition: vf_pad_opencl.c:77
fail
#define fail()
Definition: checkasm.h:179
PadOpenCLContext::h_expr
char * h_expr
Definition: vf_pad_opencl.c:64
AVRational::num
int num
Numerator.
Definition: rational.h:59
PadOpenCLContext::h
int h
Definition: vf_pad_opencl.c:72
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
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:33
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:50
float
float
Definition: af_crystalizer.c:121
RGB_TO_Y_BT709
#define RGB_TO_Y_BT709(r, g, b)
Definition: vf_pseudocolor.c:674
pad_opencl_init
static int pad_opencl_init(AVFilterContext *avctx, AVFrame *input_frame)
Definition: vf_pad_opencl.c:80
RGB_TO_U_BT709
#define RGB_TO_U_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:678
PadOpenCLContext::is_packed
int is_packed
Definition: vf_pad_opencl.c:60
ctx
AVFormatContext * ctx
Definition: movenc.c:48
PadOpenCLContext::aspect
AVRational aspect
Definition: vf_pad_opencl.c:67
NAN
#define NAN
Definition: mathematics.h:115
FILTER_INPUTS
#define FILTER_INPUTS(array)
Definition: internal.h:182
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:47
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:223
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:736
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:417
pad_opencl_options
static const AVOption pad_opencl_options[]
Definition: vf_pad_opencl.c:369
PadOpenCLContext::y_expr
char * y_expr
Definition: vf_pad_opencl.c:66
double
double
Definition: af_crystalizer.c:131
VAR_SAR
@ VAR_SAR
Definition: vf_pad_opencl.c:51
AV_PIX_FMT_OPENCL
@ AV_PIX_FMT_OPENCL
Hardware surfaces for OpenCL.
Definition: pixfmt.h:362
VARS_NB
@ VARS_NB
Definition: vf_pad_opencl.c:53
PadOpenCLContext::vsub
int vsub
Definition: vf_pad_opencl.c:61
ff_vf_pad_opencl
const AVFilter ff_vf_pad_opencl
Definition: vf_pad_opencl.c:383
eval.h
RGB_TO_V_BT709
#define RGB_TO_V_BT709(r1, g1, b1, max)
Definition: vf_pseudocolor.c:682
init
int(* init)(AVBSFContext *ctx)
Definition: dts2pts.c:365
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:106
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:804
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
AVFILTER_FLAG_HWDEVICE
#define AVFILTER_FLAG_HWDEVICE
The filter can create hardware frames using AVFilterContext.hw_device_ctx.
Definition: avfilter.h:138
PadOpenCLContext::initialized
int initialized
Definition: vf_pad_opencl.c:58
output_frame
static int output_frame(H264Context *h, AVFrame *dst, H264Picture *srcp)
Definition: h264dec.c:874
VAR_IN_H
@ VAR_IN_H
Definition: vf_pad_opencl.c:45
opencl_source.h
pad_opencl_config_output
static int pad_opencl_config_output(AVFilterLink *outlink)
Definition: vf_pad_opencl.c:248
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
FLAGS
#define FLAGS
Definition: vf_pad_opencl.c:367
FILTER_SINGLE_PIXFMT
#define FILTER_SINGLE_PIXFMT(pix_fmt_)
Definition: internal.h:172
PadOpenCLContext::pad_color_float
cl_float4 pad_color_float
Definition: vf_pad_opencl.c:76
uninit
static void uninit(AVBSFContext *ctx)
Definition: pcm_rechunk.c:68
PadOpenCLContext::ocf
OpenCLFilterContext ocf
Definition: vf_pad_opencl.c:57
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:255
VAR_DAR
@ VAR_DAR
Definition: vf_pad_opencl.c:52
var_names
static const char *const var_names[]
Definition: vf_pad_opencl.c:30
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:39
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:166
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:125
ff_opencl_filter_init
int ff_opencl_filter_init(AVFilterContext *avctx)
Initialise an OpenCL filter context.
Definition: opencl.c:132
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:59
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:752
VAR_OW
@ VAR_OW
Definition: vf_pad_opencl.c:46
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:358
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:141
PadOpenCLContext::command_queue
cl_command_queue command_queue
Definition: vf_pad_opencl.c:69
PadOpenCLContext::w
int w
Definition: vf_pad_opencl.c:72
PadOpenCLContext::pad_color
uint8_t pad_color[4]
Definition: vf_pad_opencl.c:75
PadOpenCLContext::y
int y
Definition: vf_pad_opencl.c:73
AVFilterContext
An instance of a filter.
Definition: avfilter.h:409
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:183
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
ff_source_pad_cl
const char * ff_source_pad_cl
VAR_IW
@ VAR_IW
Definition: vf_pad_opencl.c:44
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:366
AV_OPT_TYPE_STRING
@ AV_OPT_TYPE_STRING
Definition: opt.h:229
drawutils.h
VAR_OH
@ VAR_OH
Definition: vf_pad_opencl.c:47
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:421