h264_metadata: Add option to delete filler data
[libav.git] / libavfilter / vf_scale_npp.c
1 /*
2 * This file is part of Libav.
3 *
4 * Libav 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
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * Libav 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 Libav; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 /**
20 * @file
21 * scale video filter
22 */
23
24 #include <nppi.h>
25 #include <stdio.h>
26 #include <string.h>
27
28 #include "libavutil/avstring.h"
29 #include "libavutil/common.h"
30 #include "libavutil/eval.h"
31 #include "libavutil/hwcontext.h"
32 #include "libavutil/hwcontext_cuda.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/mathematics.h"
35 #include "libavutil/opt.h"
36 #include "libavutil/pixdesc.h"
37
38 #include "avfilter.h"
39 #include "formats.h"
40 #include "internal.h"
41 #include "video.h"
42
43 static const enum AVPixelFormat supported_formats[] = {
44 AV_PIX_FMT_YUV420P,
45 AV_PIX_FMT_NV12,
46 AV_PIX_FMT_YUV444P,
47 };
48
49 static const enum AVPixelFormat deinterleaved_formats[][2] = {
50 { AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
51 };
52
53 static const char *const var_names[] = {
54 "PI",
55 "PHI",
56 "E",
57 "in_w", "iw",
58 "in_h", "ih",
59 "out_w", "ow",
60 "out_h", "oh",
61 "a", "dar",
62 "sar",
63 NULL
64 };
65
66 enum var_name {
67 VAR_PI,
68 VAR_PHI,
69 VAR_E,
70 VAR_IN_W, VAR_IW,
71 VAR_IN_H, VAR_IH,
72 VAR_OUT_W, VAR_OW,
73 VAR_OUT_H, VAR_OH,
74 VAR_A, VAR_DAR,
75 VAR_SAR,
76 VARS_NB
77 };
78
79 enum ScaleStage {
80 STAGE_DEINTERLEAVE,
81 STAGE_RESIZE,
82 STAGE_INTERLEAVE,
83 STAGE_NB,
84 };
85
86 typedef struct NPPScaleStageContext {
87 int stage_needed;
88 enum AVPixelFormat in_fmt;
89 enum AVPixelFormat out_fmt;
90
91 struct {
92 int width;
93 int height;
94 } planes_in[3], planes_out[3];
95
96 AVBufferRef *frames_ctx;
97 AVFrame *frame;
98 } NPPScaleStageContext;
99
100 typedef struct NPPScaleContext {
101 const AVClass *class;
102
103 NPPScaleStageContext stages[STAGE_NB];
104 AVFrame *tmp_frame;
105 int passthrough;
106
107 int shift_width, shift_height;
108
109 /**
110 * New dimensions. Special values are:
111 * 0 = original width/height
112 * -1 = keep original aspect
113 */
114 int w, h;
115
116 /**
117 * Output sw format. AV_PIX_FMT_NONE for no conversion.
118 */
119 enum AVPixelFormat format;
120
121 char *w_expr; ///< width expression string
122 char *h_expr; ///< height expression string
123 char *format_str;
124
125 int interp_algo;
126 } NPPScaleContext;
127
128 static int nppscale_init(AVFilterContext *ctx)
129 {
130 NPPScaleContext *s = ctx->priv;
131 int i;
132
133 if (!strcmp(s->format_str, "same")) {
134 s->format = AV_PIX_FMT_NONE;
135 } else {
136 s->format = av_get_pix_fmt(s->format_str);
137 if (s->format == AV_PIX_FMT_NONE) {
138 av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", s->format_str);
139 return AVERROR(EINVAL);
140 }
141 }
142
143 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
144 s->stages[i].frame = av_frame_alloc();
145 if (!s->stages[i].frame)
146 return AVERROR(ENOMEM);
147 }
148 s->tmp_frame = av_frame_alloc();
149 if (!s->tmp_frame)
150 return AVERROR(ENOMEM);
151
152 return 0;
153 }
154
155 static void nppscale_uninit(AVFilterContext *ctx)
156 {
157 NPPScaleContext *s = ctx->priv;
158 int i;
159
160 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
161 av_frame_free(&s->stages[i].frame);
162 av_buffer_unref(&s->stages[i].frames_ctx);
163 }
164 av_frame_free(&s->tmp_frame);
165 }
166
167 static int nppscale_query_formats(AVFilterContext *ctx)
168 {
169 static const enum AVPixelFormat pixel_formats[] = {
170 AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
171 };
172 AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
173
174 ff_set_common_formats(ctx, pix_fmts);
175
176 return 0;
177 }
178
179 static int init_stage(NPPScaleStageContext *stage, AVBufferRef *device_ctx)
180 {
181 AVBufferRef *out_ref = NULL;
182 AVHWFramesContext *out_ctx;
183 int in_sw, in_sh, out_sw, out_sh;
184 int ret, i;
185
186 av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
187 av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
188 if (!stage->planes_out[0].width) {
189 stage->planes_out[0].width = stage->planes_in[0].width;
190 stage->planes_out[0].height = stage->planes_in[0].height;
191 }
192
193 for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
194 stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
195 stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
196 stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
197 stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
198 }
199
200 out_ref = av_hwframe_ctx_alloc(device_ctx);
201 if (!out_ref)
202 return AVERROR(ENOMEM);
203 out_ctx = (AVHWFramesContext*)out_ref->data;
204
205 out_ctx->format = AV_PIX_FMT_CUDA;
206 out_ctx->sw_format = stage->out_fmt;
207 out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
208 out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
209
210 ret = av_hwframe_ctx_init(out_ref);
211 if (ret < 0)
212 goto fail;
213
214 av_frame_unref(stage->frame);
215 ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
216 if (ret < 0)
217 goto fail;
218
219 stage->frame->width = stage->planes_out[0].width;
220 stage->frame->height = stage->planes_out[0].height;
221
222 av_buffer_unref(&stage->frames_ctx);
223 stage->frames_ctx = out_ref;
224
225 return 0;
226 fail:
227 av_buffer_unref(&out_ref);
228 return ret;
229 }
230
231 static int format_is_supported(enum AVPixelFormat fmt)
232 {
233 int i;
234
235 for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
236 if (supported_formats[i] == fmt)
237 return 1;
238 return 0;
239 }
240
241 static enum AVPixelFormat get_deinterleaved_format(enum AVPixelFormat fmt)
242 {
243 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
244 int i, planes;
245
246 planes = av_pix_fmt_count_planes(fmt);
247 if (planes == desc->nb_components)
248 return fmt;
249 for (i = 0; i < FF_ARRAY_ELEMS(deinterleaved_formats); i++)
250 if (deinterleaved_formats[i][0] == fmt)
251 return deinterleaved_formats[i][1];
252 return AV_PIX_FMT_NONE;
253 }
254
255 static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
256 int out_width, int out_height)
257 {
258 NPPScaleContext *s = ctx->priv;
259
260 AVHWFramesContext *in_frames_ctx;
261
262 enum AVPixelFormat in_format;
263 enum AVPixelFormat out_format;
264 enum AVPixelFormat in_deinterleaved_format;
265 enum AVPixelFormat out_deinterleaved_format;
266
267 int i, ret, last_stage = -1;
268
269 /* check that we have a hw context */
270 if (!ctx->inputs[0]->hw_frames_ctx) {
271 av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
272 return AVERROR(EINVAL);
273 }
274 in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
275 in_format = in_frames_ctx->sw_format;
276 out_format = (s->format == AV_PIX_FMT_NONE) ? in_format : s->format;
277
278 if (!format_is_supported(in_format)) {
279 av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
280 av_get_pix_fmt_name(in_format));
281 return AVERROR(ENOSYS);
282 }
283 if (!format_is_supported(out_format)) {
284 av_log(ctx, AV_LOG_ERROR, "Unsupported output format: %s\n",
285 av_get_pix_fmt_name(out_format));
286 return AVERROR(ENOSYS);
287 }
288
289 in_deinterleaved_format = get_deinterleaved_format(in_format);
290 out_deinterleaved_format = get_deinterleaved_format(out_format);
291 if (in_deinterleaved_format == AV_PIX_FMT_NONE ||
292 out_deinterleaved_format == AV_PIX_FMT_NONE)
293 return AVERROR_BUG;
294
295 /* figure out which stages need to be done */
296 if (in_width != out_width || in_height != out_height ||
297 in_deinterleaved_format != out_deinterleaved_format)
298 s->stages[STAGE_RESIZE].stage_needed = 1;
299
300 if (!s->stages[STAGE_RESIZE].stage_needed && in_format == out_format)
301 s->passthrough = 1;
302
303 if (!s->passthrough) {
304 if (in_format != in_deinterleaved_format)
305 s->stages[STAGE_DEINTERLEAVE].stage_needed = 1;
306 if (out_format != out_deinterleaved_format)
307 s->stages[STAGE_INTERLEAVE].stage_needed = 1;
308 }
309
310 s->stages[STAGE_DEINTERLEAVE].in_fmt = in_format;
311 s->stages[STAGE_DEINTERLEAVE].out_fmt = in_deinterleaved_format;
312 s->stages[STAGE_DEINTERLEAVE].planes_in[0].width = in_width;
313 s->stages[STAGE_DEINTERLEAVE].planes_in[0].height = in_height;
314
315 s->stages[STAGE_RESIZE].in_fmt = in_deinterleaved_format;
316 s->stages[STAGE_RESIZE].out_fmt = out_deinterleaved_format;
317 s->stages[STAGE_RESIZE].planes_in[0].width = in_width;
318 s->stages[STAGE_RESIZE].planes_in[0].height = in_height;
319 s->stages[STAGE_RESIZE].planes_out[0].width = out_width;
320 s->stages[STAGE_RESIZE].planes_out[0].height = out_height;
321
322 s->stages[STAGE_INTERLEAVE].in_fmt = out_deinterleaved_format;
323 s->stages[STAGE_INTERLEAVE].out_fmt = out_format;
324 s->stages[STAGE_INTERLEAVE].planes_in[0].width = out_width;
325 s->stages[STAGE_INTERLEAVE].planes_in[0].height = out_height;
326
327 /* init the hardware contexts */
328 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
329 if (!s->stages[i].stage_needed)
330 continue;
331
332 ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
333 if (ret < 0)
334 return ret;
335
336 last_stage = i;
337 }
338
339 if (last_stage >= 0)
340 ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
341 else
342 ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
343
344 if (!ctx->outputs[0]->hw_frames_ctx)
345 return AVERROR(ENOMEM);
346
347 return 0;
348 }
349
350 static int nppscale_config_props(AVFilterLink *outlink)
351 {
352 AVFilterContext *ctx = outlink->src;
353 AVFilterLink *inlink = outlink->src->inputs[0];
354 NPPScaleContext *s = ctx->priv;
355 int64_t w, h;
356 double var_values[VARS_NB], res;
357 char *expr;
358 int ret;
359
360 var_values[VAR_PI] = M_PI;
361 var_values[VAR_PHI] = M_PHI;
362 var_values[VAR_E] = M_E;
363 var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
364 var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
365 var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
366 var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
367 var_values[VAR_A] = (double) inlink->w / inlink->h;
368 var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
369 (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
370 var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
371
372 /* evaluate width and height */
373 av_expr_parse_and_eval(&res, (expr = s->w_expr),
374 var_names, var_values,
375 NULL, NULL, NULL, NULL, NULL, 0, ctx);
376 s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
377 if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
378 var_names, var_values,
379 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
380 goto fail;
381 s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
382 /* evaluate again the width, as it may depend on the output height */
383 if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
384 var_names, var_values,
385 NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
386 goto fail;
387 s->w = res;
388
389 w = s->w;
390 h = s->h;
391
392 /* sanity check params */
393 if (w < -1 || h < -1) {
394 av_log(ctx, AV_LOG_ERROR, "Size values less than -1 are not acceptable.\n");
395 return AVERROR(EINVAL);
396 }
397 if (w == -1 && h == -1)
398 s->w = s->h = 0;
399
400 if (!(w = s->w))
401 w = inlink->w;
402 if (!(h = s->h))
403 h = inlink->h;
404 if (w == -1)
405 w = av_rescale(h, inlink->w, inlink->h);
406 if (h == -1)
407 h = av_rescale(w, inlink->h, inlink->w);
408
409 if (w > INT_MAX || h > INT_MAX ||
410 (h * inlink->w) > INT_MAX ||
411 (w * inlink->h) > INT_MAX)
412 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
413
414 outlink->w = w;
415 outlink->h = h;
416
417 ret = init_processing_chain(ctx, inlink->w, inlink->h, w, h);
418 if (ret < 0)
419 return ret;
420
421 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d\n",
422 inlink->w, inlink->h, outlink->w, outlink->h);
423
424 if (inlink->sample_aspect_ratio.num)
425 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
426 outlink->w*inlink->h},
427 inlink->sample_aspect_ratio);
428 else
429 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
430
431 return 0;
432
433 fail:
434 av_log(NULL, AV_LOG_ERROR,
435 "Error when evaluating the expression '%s'\n", expr);
436 return ret;
437 }
438
439 static int nppscale_deinterleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
440 AVFrame *out, AVFrame *in)
441 {
442 AVHWFramesContext *in_frames_ctx = (AVHWFramesContext*)in->hw_frames_ctx->data;
443 NppStatus err;
444
445 switch (in_frames_ctx->sw_format) {
446 case AV_PIX_FMT_NV12:
447 err = nppiYCbCr420_8u_P2P3R(in->data[0], in->linesize[0],
448 in->data[1], in->linesize[1],
449 out->data, out->linesize,
450 (NppiSize){ in->width, in->height });
451 break;
452 default:
453 return AVERROR_BUG;
454 }
455 if (err != NPP_SUCCESS) {
456 av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
457 return AVERROR_UNKNOWN;
458 }
459
460 return 0;
461 }
462
463 static int nppscale_resize(AVFilterContext *ctx, NPPScaleStageContext *stage,
464 AVFrame *out, AVFrame *in)
465 {
466 NPPScaleContext *s = ctx->priv;
467 NppStatus err;
468 int i;
469
470 for (i = 0; i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
471 int iw = stage->planes_in[i].width;
472 int ih = stage->planes_in[i].height;
473 int ow = stage->planes_out[i].width;
474 int oh = stage->planes_out[i].height;
475
476 err = nppiResizeSqrPixel_8u_C1R(in->data[i], (NppiSize){ iw, ih },
477 in->linesize[i], (NppiRect){ 0, 0, iw, ih },
478 out->data[i], out->linesize[i],
479 (NppiRect){ 0, 0, ow, oh },
480 (double)ow / iw, (double)oh / ih,
481 0.0, 0.0, s->interp_algo);
482 if (err != NPP_SUCCESS) {
483 av_log(ctx, AV_LOG_ERROR, "NPP resize error: %d\n", err);
484 return AVERROR_UNKNOWN;
485 }
486 }
487
488 return 0;
489 }
490
491 static int nppscale_interleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
492 AVFrame *out, AVFrame *in)
493 {
494 AVHWFramesContext *out_frames_ctx = (AVHWFramesContext*)out->hw_frames_ctx->data;
495 NppStatus err;
496
497 switch (out_frames_ctx->sw_format) {
498 case AV_PIX_FMT_NV12:
499 err = nppiYCbCr420_8u_P3P2R((const uint8_t**)in->data,
500 in->linesize,
501 out->data[0], out->linesize[0],
502 out->data[1], out->linesize[1],
503 (NppiSize){ in->width, in->height });
504 break;
505 default:
506 return AVERROR_BUG;
507 }
508 if (err != NPP_SUCCESS) {
509 av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
510 return AVERROR_UNKNOWN;
511 }
512
513 return 0;
514 }
515
516 static int (*const nppscale_process[])(AVFilterContext *ctx, NPPScaleStageContext *stage,
517 AVFrame *out, AVFrame *in) = {
518 [STAGE_DEINTERLEAVE] = nppscale_deinterleave,
519 [STAGE_RESIZE] = nppscale_resize,
520 [STAGE_INTERLEAVE] = nppscale_interleave,
521 };
522
523 static int nppscale_scale(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
524 {
525 NPPScaleContext *s = ctx->priv;
526 AVFrame *src = in;
527 int i, ret, last_stage = -1;
528
529 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
530 if (!s->stages[i].stage_needed)
531 continue;
532
533 ret = nppscale_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
534 if (ret < 0)
535 return ret;
536
537 src = s->stages[i].frame;
538 last_stage = i;
539 }
540
541 if (last_stage < 0)
542 return AVERROR_BUG;
543 ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
544 if (ret < 0)
545 return ret;
546
547 av_frame_move_ref(out, src);
548 av_frame_move_ref(src, s->tmp_frame);
549
550 ret = av_frame_copy_props(out, in);
551 if (ret < 0)
552 return ret;
553
554 return 0;
555 }
556
557 static int nppscale_filter_frame(AVFilterLink *link, AVFrame *in)
558 {
559 AVFilterContext *ctx = link->dst;
560 NPPScaleContext *s = ctx->priv;
561 AVFilterLink *outlink = ctx->outputs[0];
562 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)outlink->hw_frames_ctx->data;
563 AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
564
565 AVFrame *out = NULL;
566 CUresult err;
567 CUcontext dummy;
568 int ret = 0;
569
570 if (s->passthrough)
571 return ff_filter_frame(outlink, in);
572
573 out = av_frame_alloc();
574 if (!out) {
575 ret = AVERROR(ENOMEM);
576 goto fail;
577 }
578
579 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
580 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
581 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
582 INT_MAX);
583
584 err = cuCtxPushCurrent(device_hwctx->cuda_ctx);
585 if (err != CUDA_SUCCESS) {
586 ret = AVERROR_UNKNOWN;
587 goto fail;
588 }
589
590 ret = nppscale_scale(ctx, out, in);
591
592 cuCtxPopCurrent(&dummy);
593 if (ret < 0)
594 goto fail;
595
596 av_frame_free(&in);
597 return ff_filter_frame(outlink, out);
598 fail:
599 av_frame_free(&in);
600 av_frame_free(&out);
601 return ret;
602 }
603
604 #define OFFSET(x) offsetof(NPPScaleContext, x)
605 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM
606 static const AVOption options[] = {
607 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "iw" }, .flags = FLAGS },
608 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "ih" }, .flags = FLAGS },
609 { "format", "Output pixel format", OFFSET(format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
610
611 { "interp_algo", "Interpolation algorithm used for resizing", OFFSET(interp_algo), AV_OPT_TYPE_INT, { .i64 = NPPI_INTER_CUBIC }, 0, INT_MAX, FLAGS, "interp_algo" },
612 { "nn", "nearest neighbour", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_NN }, 0, 0, FLAGS, "interp_algo" },
613 { "linear", "linear", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LINEAR }, 0, 0, FLAGS, "interp_algo" },
614 { "cubic", "cubic", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC }, 0, 0, FLAGS, "interp_algo" },
615 { "cubic2p_bspline", "2-parameter cubic (B=1, C=0)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_BSPLINE }, 0, 0, FLAGS, "interp_algo" },
616 { "cubic2p_catmullrom", "2-parameter cubic (B=0, C=1/2)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_CATMULLROM }, 0, 0, FLAGS, "interp_algo" },
617 { "cubic2p_b05c03", "2-parameter cubic (B=1/2, C=3/10)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_B05C03 }, 0, 0, FLAGS, "interp_algo" },
618 { "super", "supersampling", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_SUPER }, 0, 0, FLAGS, "interp_algo" },
619 { "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LANCZOS }, 0, 0, FLAGS, "interp_algo" },
620 { NULL },
621 };
622
623 static const AVClass nppscale_class = {
624 .class_name = "nppscale",
625 .item_name = av_default_item_name,
626 .option = options,
627 .version = LIBAVUTIL_VERSION_INT,
628 };
629
630 static const AVFilterPad nppscale_inputs[] = {
631 {
632 .name = "default",
633 .type = AVMEDIA_TYPE_VIDEO,
634 .filter_frame = nppscale_filter_frame,
635 },
636 { NULL }
637 };
638
639 static const AVFilterPad nppscale_outputs[] = {
640 {
641 .name = "default",
642 .type = AVMEDIA_TYPE_VIDEO,
643 .config_props = nppscale_config_props,
644 },
645 { NULL }
646 };
647
648 AVFilter ff_vf_scale_npp = {
649 .name = "scale_npp",
650 .description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video "
651 "scaling and format conversion"),
652
653 .init = nppscale_init,
654 .uninit = nppscale_uninit,
655 .query_formats = nppscale_query_formats,
656
657 .priv_size = sizeof(NPPScaleContext),
658 .priv_class = &nppscale_class,
659
660 .inputs = nppscale_inputs,
661 .outputs = nppscale_outputs,
662
663 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
664 };