2 * This file is part of FFmpeg.
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
7 * version 2.1 of the License, or (at your option) any later version.
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.
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
28 #include "libavutil/avstring.h"
29 #include "libavutil/common.h"
30 #include "libavutil/hwcontext.h"
31 #include "libavutil/hwcontext_cuda_internal.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
42 static const enum AVPixelFormat supported_formats[] = {
48 static const enum AVPixelFormat deinterleaved_formats[][2] = {
49 { AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
59 typedef struct NPPScaleStageContext {
61 enum AVPixelFormat in_fmt;
62 enum AVPixelFormat out_fmt;
67 } planes_in[3], planes_out[3];
69 AVBufferRef *frames_ctx;
71 } NPPScaleStageContext;
73 typedef struct NPPScaleContext {
76 NPPScaleStageContext stages[STAGE_NB];
80 int shift_width, shift_height;
83 * New dimensions. Special values are:
84 * 0 = original width/height
85 * -1 = keep original aspect
90 * Output sw format. AV_PIX_FMT_NONE for no conversion.
92 enum AVPixelFormat format;
94 char *w_expr; ///< width expression string
95 char *h_expr; ///< height expression string
101 static int nppscale_init(AVFilterContext *ctx)
103 NPPScaleContext *s = ctx->priv;
106 if (!strcmp(s->format_str, "same")) {
107 s->format = AV_PIX_FMT_NONE;
109 s->format = av_get_pix_fmt(s->format_str);
110 if (s->format == AV_PIX_FMT_NONE) {
111 av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", s->format_str);
112 return AVERROR(EINVAL);
116 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
117 s->stages[i].frame = av_frame_alloc();
118 if (!s->stages[i].frame)
119 return AVERROR(ENOMEM);
121 s->tmp_frame = av_frame_alloc();
123 return AVERROR(ENOMEM);
128 static void nppscale_uninit(AVFilterContext *ctx)
130 NPPScaleContext *s = ctx->priv;
133 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
134 av_frame_free(&s->stages[i].frame);
135 av_buffer_unref(&s->stages[i].frames_ctx);
137 av_frame_free(&s->tmp_frame);
140 static int nppscale_query_formats(AVFilterContext *ctx)
142 static const enum AVPixelFormat pixel_formats[] = {
143 AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
145 AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
147 return ff_set_common_formats(ctx, pix_fmts);
150 static int init_stage(NPPScaleStageContext *stage, AVBufferRef *device_ctx)
152 AVBufferRef *out_ref = NULL;
153 AVHWFramesContext *out_ctx;
154 int in_sw, in_sh, out_sw, out_sh;
157 av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
158 av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
159 if (!stage->planes_out[0].width) {
160 stage->planes_out[0].width = stage->planes_in[0].width;
161 stage->planes_out[0].height = stage->planes_in[0].height;
164 for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
165 stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
166 stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
167 stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
168 stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
171 out_ref = av_hwframe_ctx_alloc(device_ctx);
173 return AVERROR(ENOMEM);
174 out_ctx = (AVHWFramesContext*)out_ref->data;
176 out_ctx->format = AV_PIX_FMT_CUDA;
177 out_ctx->sw_format = stage->out_fmt;
178 out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
179 out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
181 ret = av_hwframe_ctx_init(out_ref);
185 av_frame_unref(stage->frame);
186 ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
190 stage->frame->width = stage->planes_out[0].width;
191 stage->frame->height = stage->planes_out[0].height;
193 av_buffer_unref(&stage->frames_ctx);
194 stage->frames_ctx = out_ref;
198 av_buffer_unref(&out_ref);
202 static int format_is_supported(enum AVPixelFormat fmt)
206 for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
207 if (supported_formats[i] == fmt)
212 static enum AVPixelFormat get_deinterleaved_format(enum AVPixelFormat fmt)
214 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
217 planes = av_pix_fmt_count_planes(fmt);
218 if (planes == desc->nb_components)
220 for (i = 0; i < FF_ARRAY_ELEMS(deinterleaved_formats); i++)
221 if (deinterleaved_formats[i][0] == fmt)
222 return deinterleaved_formats[i][1];
223 return AV_PIX_FMT_NONE;
226 static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
227 int out_width, int out_height)
229 NPPScaleContext *s = ctx->priv;
231 AVHWFramesContext *in_frames_ctx;
233 enum AVPixelFormat in_format;
234 enum AVPixelFormat out_format;
235 enum AVPixelFormat in_deinterleaved_format;
236 enum AVPixelFormat out_deinterleaved_format;
238 int i, ret, last_stage = -1;
240 /* check that we have a hw context */
241 if (!ctx->inputs[0]->hw_frames_ctx) {
242 av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
243 return AVERROR(EINVAL);
245 in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
246 in_format = in_frames_ctx->sw_format;
247 out_format = (s->format == AV_PIX_FMT_NONE) ? in_format : s->format;
249 if (!format_is_supported(in_format)) {
250 av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
251 av_get_pix_fmt_name(in_format));
252 return AVERROR(ENOSYS);
254 if (!format_is_supported(out_format)) {
255 av_log(ctx, AV_LOG_ERROR, "Unsupported output format: %s\n",
256 av_get_pix_fmt_name(out_format));
257 return AVERROR(ENOSYS);
260 in_deinterleaved_format = get_deinterleaved_format(in_format);
261 out_deinterleaved_format = get_deinterleaved_format(out_format);
262 if (in_deinterleaved_format == AV_PIX_FMT_NONE ||
263 out_deinterleaved_format == AV_PIX_FMT_NONE)
266 /* figure out which stages need to be done */
267 if (in_width != out_width || in_height != out_height ||
268 in_deinterleaved_format != out_deinterleaved_format) {
269 s->stages[STAGE_RESIZE].stage_needed = 1;
271 if (s->interp_algo == NPPI_INTER_SUPER &&
272 (out_width > in_width && out_height > in_height)) {
273 s->interp_algo = NPPI_INTER_LANCZOS;
274 av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using lanczos instead.\n");
276 if (s->interp_algo == NPPI_INTER_SUPER &&
277 !(out_width < in_width && out_height < in_height)) {
278 s->interp_algo = NPPI_INTER_CUBIC;
279 av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using cubic instead.\n");
283 if (!s->stages[STAGE_RESIZE].stage_needed && in_format == out_format)
286 if (!s->passthrough) {
287 if (in_format != in_deinterleaved_format)
288 s->stages[STAGE_DEINTERLEAVE].stage_needed = 1;
289 if (out_format != out_deinterleaved_format)
290 s->stages[STAGE_INTERLEAVE].stage_needed = 1;
293 s->stages[STAGE_DEINTERLEAVE].in_fmt = in_format;
294 s->stages[STAGE_DEINTERLEAVE].out_fmt = in_deinterleaved_format;
295 s->stages[STAGE_DEINTERLEAVE].planes_in[0].width = in_width;
296 s->stages[STAGE_DEINTERLEAVE].planes_in[0].height = in_height;
298 s->stages[STAGE_RESIZE].in_fmt = in_deinterleaved_format;
299 s->stages[STAGE_RESIZE].out_fmt = out_deinterleaved_format;
300 s->stages[STAGE_RESIZE].planes_in[0].width = in_width;
301 s->stages[STAGE_RESIZE].planes_in[0].height = in_height;
302 s->stages[STAGE_RESIZE].planes_out[0].width = out_width;
303 s->stages[STAGE_RESIZE].planes_out[0].height = out_height;
305 s->stages[STAGE_INTERLEAVE].in_fmt = out_deinterleaved_format;
306 s->stages[STAGE_INTERLEAVE].out_fmt = out_format;
307 s->stages[STAGE_INTERLEAVE].planes_in[0].width = out_width;
308 s->stages[STAGE_INTERLEAVE].planes_in[0].height = out_height;
310 /* init the hardware contexts */
311 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
312 if (!s->stages[i].stage_needed)
315 ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
323 ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
325 ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
327 if (!ctx->outputs[0]->hw_frames_ctx)
328 return AVERROR(ENOMEM);
333 static int nppscale_config_props(AVFilterLink *outlink)
335 AVFilterContext *ctx = outlink->src;
336 AVFilterLink *inlink = outlink->src->inputs[0];
337 NPPScaleContext *s = ctx->priv;
341 if ((ret = ff_scale_eval_dimensions(s,
342 s->w_expr, s->h_expr,
347 if (((int64_t)h * inlink->w) > INT_MAX ||
348 ((int64_t)w * inlink->h) > INT_MAX)
349 av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
354 ret = init_processing_chain(ctx, inlink->w, inlink->h, w, h);
358 av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d\n",
359 inlink->w, inlink->h, outlink->w, outlink->h);
361 if (inlink->sample_aspect_ratio.num)
362 outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
363 outlink->w*inlink->h},
364 inlink->sample_aspect_ratio);
366 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
374 static int nppscale_deinterleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
375 AVFrame *out, AVFrame *in)
377 AVHWFramesContext *in_frames_ctx = (AVHWFramesContext*)in->hw_frames_ctx->data;
380 switch (in_frames_ctx->sw_format) {
381 case AV_PIX_FMT_NV12:
382 err = nppiYCbCr420_8u_P2P3R(in->data[0], in->linesize[0],
383 in->data[1], in->linesize[1],
384 out->data, out->linesize,
385 (NppiSize){ in->width, in->height });
390 if (err != NPP_SUCCESS) {
391 av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
392 return AVERROR_UNKNOWN;
398 static int nppscale_resize(AVFilterContext *ctx, NPPScaleStageContext *stage,
399 AVFrame *out, AVFrame *in)
401 NPPScaleContext *s = ctx->priv;
405 for (i = 0; i < FF_ARRAY_ELEMS(stage->planes_in) && i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
406 int iw = stage->planes_in[i].width;
407 int ih = stage->planes_in[i].height;
408 int ow = stage->planes_out[i].width;
409 int oh = stage->planes_out[i].height;
411 err = nppiResizeSqrPixel_8u_C1R(in->data[i], (NppiSize){ iw, ih },
412 in->linesize[i], (NppiRect){ 0, 0, iw, ih },
413 out->data[i], out->linesize[i],
414 (NppiRect){ 0, 0, ow, oh },
415 (double)ow / iw, (double)oh / ih,
416 0.0, 0.0, s->interp_algo);
417 if (err != NPP_SUCCESS) {
418 av_log(ctx, AV_LOG_ERROR, "NPP resize error: %d\n", err);
419 return AVERROR_UNKNOWN;
426 static int nppscale_interleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
427 AVFrame *out, AVFrame *in)
429 AVHWFramesContext *out_frames_ctx = (AVHWFramesContext*)out->hw_frames_ctx->data;
432 switch (out_frames_ctx->sw_format) {
433 case AV_PIX_FMT_NV12:
434 err = nppiYCbCr420_8u_P3P2R((const uint8_t**)in->data,
436 out->data[0], out->linesize[0],
437 out->data[1], out->linesize[1],
438 (NppiSize){ in->width, in->height });
443 if (err != NPP_SUCCESS) {
444 av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
445 return AVERROR_UNKNOWN;
451 static int (*const nppscale_process[])(AVFilterContext *ctx, NPPScaleStageContext *stage,
452 AVFrame *out, AVFrame *in) = {
453 [STAGE_DEINTERLEAVE] = nppscale_deinterleave,
454 [STAGE_RESIZE] = nppscale_resize,
455 [STAGE_INTERLEAVE] = nppscale_interleave,
458 static int nppscale_scale(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
460 NPPScaleContext *s = ctx->priv;
462 int i, ret, last_stage = -1;
464 for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
465 if (!s->stages[i].stage_needed)
468 ret = nppscale_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
472 src = s->stages[i].frame;
478 ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
482 av_frame_move_ref(out, src);
483 av_frame_move_ref(src, s->tmp_frame);
485 ret = av_frame_copy_props(out, in);
492 static int nppscale_filter_frame(AVFilterLink *link, AVFrame *in)
494 AVFilterContext *ctx = link->dst;
495 NPPScaleContext *s = ctx->priv;
496 AVFilterLink *outlink = ctx->outputs[0];
497 AVHWFramesContext *frames_ctx = (AVHWFramesContext*)outlink->hw_frames_ctx->data;
498 AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
506 return ff_filter_frame(outlink, in);
508 out = av_frame_alloc();
510 ret = AVERROR(ENOMEM);
514 err = device_hwctx->internal->cuda_dl->cuCtxPushCurrent(device_hwctx->cuda_ctx);
515 if (err != CUDA_SUCCESS) {
516 ret = AVERROR_UNKNOWN;
520 ret = nppscale_scale(ctx, out, in);
522 device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy);
526 av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
527 (int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
528 (int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
532 return ff_filter_frame(outlink, out);
539 #define OFFSET(x) offsetof(NPPScaleContext, x)
540 #define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
541 static const AVOption options[] = {
542 { "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "iw" }, .flags = FLAGS },
543 { "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "ih" }, .flags = FLAGS },
544 { "format", "Output pixel format", OFFSET(format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
546 { "interp_algo", "Interpolation algorithm used for resizing", OFFSET(interp_algo), AV_OPT_TYPE_INT, { .i64 = NPPI_INTER_CUBIC }, 0, INT_MAX, FLAGS, "interp_algo" },
547 { "nn", "nearest neighbour", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_NN }, 0, 0, FLAGS, "interp_algo" },
548 { "linear", "linear", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LINEAR }, 0, 0, FLAGS, "interp_algo" },
549 { "cubic", "cubic", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC }, 0, 0, FLAGS, "interp_algo" },
550 { "cubic2p_bspline", "2-parameter cubic (B=1, C=0)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_BSPLINE }, 0, 0, FLAGS, "interp_algo" },
551 { "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" },
552 { "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" },
553 { "super", "supersampling", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_SUPER }, 0, 0, FLAGS, "interp_algo" },
554 { "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LANCZOS }, 0, 0, FLAGS, "interp_algo" },
558 static const AVClass nppscale_class = {
559 .class_name = "nppscale",
560 .item_name = av_default_item_name,
562 .version = LIBAVUTIL_VERSION_INT,
565 static const AVFilterPad nppscale_inputs[] = {
568 .type = AVMEDIA_TYPE_VIDEO,
569 .filter_frame = nppscale_filter_frame,
574 static const AVFilterPad nppscale_outputs[] = {
577 .type = AVMEDIA_TYPE_VIDEO,
578 .config_props = nppscale_config_props,
583 AVFilter ff_vf_scale_npp = {
585 .description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video "
586 "scaling and format conversion"),
588 .init = nppscale_init,
589 .uninit = nppscale_uninit,
590 .query_formats = nppscale_query_formats,
592 .priv_size = sizeof(NPPScaleContext),
593 .priv_class = &nppscale_class,
595 .inputs = nppscale_inputs,
596 .outputs = nppscale_outputs,
598 .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,