mirror of https://git.ffmpeg.org/ffmpeg.git
673 lines
22 KiB
C
673 lines
22 KiB
C
/*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* scale video filter
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*/
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#include <nppi.h>
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#include <stdio.h>
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#include <string.h>
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#include "libavutil/avstring.h"
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#include "libavutil/common.h"
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#include "libavutil/eval.h"
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#include "libavutil/hwcontext.h"
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#include "libavutil/hwcontext_cuda.h"
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#include "libavutil/internal.h"
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#include "libavutil/mathematics.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "formats.h"
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#include "internal.h"
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#include "video.h"
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static const enum AVPixelFormat supported_formats[] = {
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AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_NV12,
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AV_PIX_FMT_YUV444P,
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};
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static const enum AVPixelFormat deinterleaved_formats[][2] = {
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{ AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
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};
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static const char *const var_names[] = {
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"PI",
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"PHI",
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"E",
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"in_w", "iw",
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"in_h", "ih",
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"out_w", "ow",
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"out_h", "oh",
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"a", "dar",
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"sar",
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NULL
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};
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enum var_name {
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VAR_PI,
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VAR_PHI,
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VAR_E,
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VAR_IN_W, VAR_IW,
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VAR_IN_H, VAR_IH,
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VAR_OUT_W, VAR_OW,
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VAR_OUT_H, VAR_OH,
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VAR_A, VAR_DAR,
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VAR_SAR,
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VARS_NB
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};
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enum ScaleStage {
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STAGE_DEINTERLEAVE,
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STAGE_RESIZE,
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STAGE_INTERLEAVE,
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STAGE_NB,
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};
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typedef struct NPPScaleStageContext {
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int stage_needed;
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enum AVPixelFormat in_fmt;
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enum AVPixelFormat out_fmt;
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struct {
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int width;
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int height;
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} planes_in[3], planes_out[3];
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AVBufferRef *frames_ctx;
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AVFrame *frame;
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} NPPScaleStageContext;
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typedef struct NPPScaleContext {
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const AVClass *class;
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NPPScaleStageContext stages[STAGE_NB];
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AVFrame *tmp_frame;
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int passthrough;
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int shift_width, shift_height;
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/**
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* New dimensions. Special values are:
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* 0 = original width/height
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* -1 = keep original aspect
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*/
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int w, h;
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/**
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* Output sw format. AV_PIX_FMT_NONE for no conversion.
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*/
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enum AVPixelFormat format;
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char *w_expr; ///< width expression string
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char *h_expr; ///< height expression string
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char *format_str;
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int interp_algo;
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} NPPScaleContext;
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static int nppscale_init(AVFilterContext *ctx)
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{
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NPPScaleContext *s = ctx->priv;
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int i;
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if (!strcmp(s->format_str, "same")) {
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s->format = AV_PIX_FMT_NONE;
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} else {
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s->format = av_get_pix_fmt(s->format_str);
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if (s->format == AV_PIX_FMT_NONE) {
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av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", s->format_str);
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return AVERROR(EINVAL);
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}
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}
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for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
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s->stages[i].frame = av_frame_alloc();
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if (!s->stages[i].frame)
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return AVERROR(ENOMEM);
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}
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s->tmp_frame = av_frame_alloc();
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if (!s->tmp_frame)
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return AVERROR(ENOMEM);
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return 0;
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}
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static void nppscale_uninit(AVFilterContext *ctx)
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{
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NPPScaleContext *s = ctx->priv;
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
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av_frame_free(&s->stages[i].frame);
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av_buffer_unref(&s->stages[i].frames_ctx);
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}
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av_frame_free(&s->tmp_frame);
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}
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static int nppscale_query_formats(AVFilterContext *ctx)
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{
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static const enum AVPixelFormat pixel_formats[] = {
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AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
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};
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AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
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ff_set_common_formats(ctx, pix_fmts);
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return 0;
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}
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static int init_stage(NPPScaleStageContext *stage, AVBufferRef *device_ctx)
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{
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AVBufferRef *out_ref = NULL;
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AVHWFramesContext *out_ctx;
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int in_sw, in_sh, out_sw, out_sh;
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int ret, i;
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av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
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av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
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if (!stage->planes_out[0].width) {
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stage->planes_out[0].width = stage->planes_in[0].width;
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stage->planes_out[0].height = stage->planes_in[0].height;
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}
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for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
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stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
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stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
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stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
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stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
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}
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out_ref = av_hwframe_ctx_alloc(device_ctx);
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if (!out_ref)
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return AVERROR(ENOMEM);
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out_ctx = (AVHWFramesContext*)out_ref->data;
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out_ctx->format = AV_PIX_FMT_CUDA;
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out_ctx->sw_format = stage->out_fmt;
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out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
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out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
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ret = av_hwframe_ctx_init(out_ref);
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if (ret < 0)
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goto fail;
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av_frame_unref(stage->frame);
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ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
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if (ret < 0)
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goto fail;
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stage->frame->width = stage->planes_out[0].width;
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stage->frame->height = stage->planes_out[0].height;
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av_buffer_unref(&stage->frames_ctx);
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stage->frames_ctx = out_ref;
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return 0;
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fail:
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av_buffer_unref(&out_ref);
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return ret;
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}
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static int format_is_supported(enum AVPixelFormat fmt)
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{
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int i;
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for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
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if (supported_formats[i] == fmt)
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return 1;
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return 0;
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}
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static enum AVPixelFormat get_deinterleaved_format(enum AVPixelFormat fmt)
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{
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
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int i, planes;
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planes = av_pix_fmt_count_planes(fmt);
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if (planes == desc->nb_components)
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return fmt;
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for (i = 0; i < FF_ARRAY_ELEMS(deinterleaved_formats); i++)
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if (deinterleaved_formats[i][0] == fmt)
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return deinterleaved_formats[i][1];
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return AV_PIX_FMT_NONE;
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}
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static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
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int out_width, int out_height)
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{
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NPPScaleContext *s = ctx->priv;
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AVHWFramesContext *in_frames_ctx;
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enum AVPixelFormat in_format;
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enum AVPixelFormat out_format;
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enum AVPixelFormat in_deinterleaved_format;
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enum AVPixelFormat out_deinterleaved_format;
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int i, ret, last_stage = -1;
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/* check that we have a hw context */
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if (!ctx->inputs[0]->hw_frames_ctx) {
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av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
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return AVERROR(EINVAL);
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}
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in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
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in_format = in_frames_ctx->sw_format;
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out_format = (s->format == AV_PIX_FMT_NONE) ? in_format : s->format;
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if (!format_is_supported(in_format)) {
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av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
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av_get_pix_fmt_name(in_format));
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return AVERROR(ENOSYS);
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}
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if (!format_is_supported(out_format)) {
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av_log(ctx, AV_LOG_ERROR, "Unsupported output format: %s\n",
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av_get_pix_fmt_name(out_format));
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return AVERROR(ENOSYS);
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}
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in_deinterleaved_format = get_deinterleaved_format(in_format);
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out_deinterleaved_format = get_deinterleaved_format(out_format);
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if (in_deinterleaved_format == AV_PIX_FMT_NONE ||
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out_deinterleaved_format == AV_PIX_FMT_NONE)
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return AVERROR_BUG;
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/* figure out which stages need to be done */
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if (in_width != out_width || in_height != out_height ||
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in_deinterleaved_format != out_deinterleaved_format) {
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s->stages[STAGE_RESIZE].stage_needed = 1;
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if (s->interp_algo == NPPI_INTER_SUPER &&
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(out_width > in_width && out_height > in_height)) {
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s->interp_algo = NPPI_INTER_LANCZOS;
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av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using lanczos instead.\n");
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}
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if (s->interp_algo == NPPI_INTER_SUPER &&
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!(out_width < in_width && out_height < in_height)) {
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s->interp_algo = NPPI_INTER_CUBIC;
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av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using cubic instead.\n");
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}
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}
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if (!s->stages[STAGE_RESIZE].stage_needed && in_format == out_format)
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s->passthrough = 1;
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if (!s->passthrough) {
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if (in_format != in_deinterleaved_format)
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s->stages[STAGE_DEINTERLEAVE].stage_needed = 1;
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if (out_format != out_deinterleaved_format)
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s->stages[STAGE_INTERLEAVE].stage_needed = 1;
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}
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s->stages[STAGE_DEINTERLEAVE].in_fmt = in_format;
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s->stages[STAGE_DEINTERLEAVE].out_fmt = in_deinterleaved_format;
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s->stages[STAGE_DEINTERLEAVE].planes_in[0].width = in_width;
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s->stages[STAGE_DEINTERLEAVE].planes_in[0].height = in_height;
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s->stages[STAGE_RESIZE].in_fmt = in_deinterleaved_format;
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s->stages[STAGE_RESIZE].out_fmt = out_deinterleaved_format;
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s->stages[STAGE_RESIZE].planes_in[0].width = in_width;
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s->stages[STAGE_RESIZE].planes_in[0].height = in_height;
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s->stages[STAGE_RESIZE].planes_out[0].width = out_width;
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s->stages[STAGE_RESIZE].planes_out[0].height = out_height;
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s->stages[STAGE_INTERLEAVE].in_fmt = out_deinterleaved_format;
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s->stages[STAGE_INTERLEAVE].out_fmt = out_format;
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s->stages[STAGE_INTERLEAVE].planes_in[0].width = out_width;
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s->stages[STAGE_INTERLEAVE].planes_in[0].height = out_height;
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/* init the hardware contexts */
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for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
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if (!s->stages[i].stage_needed)
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continue;
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ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
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if (ret < 0)
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return ret;
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last_stage = i;
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}
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if (last_stage < 0)
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return AVERROR_BUG;
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ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
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if (!ctx->outputs[0]->hw_frames_ctx)
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return AVERROR(ENOMEM);
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return 0;
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}
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static int nppscale_config_props(AVFilterLink *outlink)
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{
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AVFilterContext *ctx = outlink->src;
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AVFilterLink *inlink = outlink->src->inputs[0];
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NPPScaleContext *s = ctx->priv;
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int64_t w, h;
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double var_values[VARS_NB], res;
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char *expr;
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int ret;
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var_values[VAR_PI] = M_PI;
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var_values[VAR_PHI] = M_PHI;
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var_values[VAR_E] = M_E;
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var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
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var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
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var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
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var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
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var_values[VAR_A] = (double) inlink->w / inlink->h;
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var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
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(double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
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var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
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/* evaluate width and height */
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av_expr_parse_and_eval(&res, (expr = s->w_expr),
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var_names, var_values,
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NULL, NULL, NULL, NULL, NULL, 0, ctx);
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s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
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if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
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var_names, var_values,
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NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
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goto fail;
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s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
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/* evaluate again the width, as it may depend on the output height */
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if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
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var_names, var_values,
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NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
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goto fail;
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s->w = res;
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w = s->w;
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h = s->h;
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/* sanity check params */
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if (w < -1 || h < -1) {
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av_log(ctx, AV_LOG_ERROR, "Size values less than -1 are not acceptable.\n");
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return AVERROR(EINVAL);
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}
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if (w == -1 && h == -1)
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s->w = s->h = 0;
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if (!(w = s->w))
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w = inlink->w;
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if (!(h = s->h))
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h = inlink->h;
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if (w == -1)
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w = av_rescale(h, inlink->w, inlink->h);
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if (h == -1)
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h = av_rescale(w, inlink->h, inlink->w);
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if (w > INT_MAX || h > INT_MAX ||
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(h * inlink->w) > INT_MAX ||
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(w * inlink->h) > INT_MAX)
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av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
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outlink->w = w;
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outlink->h = h;
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ret = init_processing_chain(ctx, inlink->w, inlink->h, w, h);
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if (ret < 0)
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return ret;
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av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d\n",
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inlink->w, inlink->h, outlink->w, outlink->h);
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if (inlink->sample_aspect_ratio.num)
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outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
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outlink->w*inlink->h},
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inlink->sample_aspect_ratio);
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else
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outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
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return 0;
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fail:
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av_log(NULL, AV_LOG_ERROR,
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"Error when evaluating the expression '%s'\n", expr);
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return ret;
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}
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static int nppscale_deinterleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
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AVFrame *out, AVFrame *in)
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{
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AVHWFramesContext *in_frames_ctx = (AVHWFramesContext*)in->hw_frames_ctx->data;
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NppStatus err;
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switch (in_frames_ctx->sw_format) {
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case AV_PIX_FMT_NV12:
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err = nppiYCbCr420_8u_P2P3R(in->data[0], in->linesize[0],
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in->data[1], in->linesize[1],
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out->data, out->linesize,
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(NppiSize){ in->width, in->height });
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break;
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default:
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return AVERROR_BUG;
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}
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if (err != NPP_SUCCESS) {
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av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
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return AVERROR_UNKNOWN;
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}
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return 0;
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}
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static int nppscale_resize(AVFilterContext *ctx, NPPScaleStageContext *stage,
|
|
AVFrame *out, AVFrame *in)
|
|
{
|
|
NPPScaleContext *s = ctx->priv;
|
|
NppStatus err;
|
|
int i;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(in->data) && in->data[i]; i++) {
|
|
int iw = stage->planes_in[i].width;
|
|
int ih = stage->planes_in[i].height;
|
|
int ow = stage->planes_out[i].width;
|
|
int oh = stage->planes_out[i].height;
|
|
|
|
err = nppiResizeSqrPixel_8u_C1R(in->data[i], (NppiSize){ iw, ih },
|
|
in->linesize[i], (NppiRect){ 0, 0, iw, ih },
|
|
out->data[i], out->linesize[i],
|
|
(NppiRect){ 0, 0, ow, oh },
|
|
(double)ow / iw, (double)oh / ih,
|
|
0.0, 0.0, s->interp_algo);
|
|
if (err != NPP_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "NPP resize error: %d\n", err);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nppscale_interleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
|
|
AVFrame *out, AVFrame *in)
|
|
{
|
|
AVHWFramesContext *out_frames_ctx = (AVHWFramesContext*)out->hw_frames_ctx->data;
|
|
NppStatus err;
|
|
|
|
switch (out_frames_ctx->sw_format) {
|
|
case AV_PIX_FMT_NV12:
|
|
err = nppiYCbCr420_8u_P3P2R((const uint8_t**)in->data,
|
|
in->linesize,
|
|
out->data[0], out->linesize[0],
|
|
out->data[1], out->linesize[1],
|
|
(NppiSize){ in->width, in->height });
|
|
break;
|
|
default:
|
|
return AVERROR_BUG;
|
|
}
|
|
if (err != NPP_SUCCESS) {
|
|
av_log(ctx, AV_LOG_ERROR, "NPP deinterleave error: %d\n", err);
|
|
return AVERROR_UNKNOWN;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int (*const nppscale_process[])(AVFilterContext *ctx, NPPScaleStageContext *stage,
|
|
AVFrame *out, AVFrame *in) = {
|
|
[STAGE_DEINTERLEAVE] = nppscale_deinterleave,
|
|
[STAGE_RESIZE] = nppscale_resize,
|
|
[STAGE_INTERLEAVE] = nppscale_interleave,
|
|
};
|
|
|
|
static int nppscale_scale(AVFilterContext *ctx, AVFrame *out, AVFrame *in)
|
|
{
|
|
NPPScaleContext *s = ctx->priv;
|
|
AVFrame *src = in;
|
|
int i, ret, last_stage = -1;
|
|
|
|
for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
|
|
if (!s->stages[i].stage_needed)
|
|
continue;
|
|
|
|
ret = nppscale_process[i](ctx, &s->stages[i], s->stages[i].frame, src);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
src = s->stages[i].frame;
|
|
last_stage = i;
|
|
}
|
|
|
|
if (last_stage < 0)
|
|
return AVERROR_BUG;
|
|
ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
av_frame_move_ref(out, src);
|
|
av_frame_move_ref(src, s->tmp_frame);
|
|
|
|
ret = av_frame_copy_props(out, in);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int nppscale_filter_frame(AVFilterLink *link, AVFrame *in)
|
|
{
|
|
AVFilterContext *ctx = link->dst;
|
|
NPPScaleContext *s = ctx->priv;
|
|
AVFilterLink *outlink = ctx->outputs[0];
|
|
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)outlink->hw_frames_ctx->data;
|
|
AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx;
|
|
|
|
AVFrame *out = NULL;
|
|
CUresult err;
|
|
CUcontext dummy;
|
|
int ret = 0;
|
|
|
|
if (s->passthrough)
|
|
return ff_filter_frame(outlink, in);
|
|
|
|
out = av_frame_alloc();
|
|
if (!out) {
|
|
ret = AVERROR(ENOMEM);
|
|
goto fail;
|
|
}
|
|
|
|
av_reduce(&out->sample_aspect_ratio.num, &out->sample_aspect_ratio.den,
|
|
(int64_t)in->sample_aspect_ratio.num * outlink->h * link->w,
|
|
(int64_t)in->sample_aspect_ratio.den * outlink->w * link->h,
|
|
INT_MAX);
|
|
|
|
err = cuCtxPushCurrent(device_hwctx->cuda_ctx);
|
|
if (err != CUDA_SUCCESS) {
|
|
ret = AVERROR_UNKNOWN;
|
|
goto fail;
|
|
}
|
|
|
|
ret = nppscale_scale(ctx, out, in);
|
|
|
|
cuCtxPopCurrent(&dummy);
|
|
if (ret < 0)
|
|
goto fail;
|
|
|
|
av_frame_free(&in);
|
|
return ff_filter_frame(outlink, out);
|
|
fail:
|
|
av_frame_free(&in);
|
|
av_frame_free(&out);
|
|
return ret;
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(NPPScaleContext, x)
|
|
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM)
|
|
static const AVOption options[] = {
|
|
{ "w", "Output video width", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str = "iw" }, .flags = FLAGS },
|
|
{ "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str = "ih" }, .flags = FLAGS },
|
|
{ "format", "Output pixel format", OFFSET(format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
|
|
|
|
{ "interp_algo", "Interpolation algorithm used for resizing", OFFSET(interp_algo), AV_OPT_TYPE_INT, { .i64 = NPPI_INTER_CUBIC }, 0, INT_MAX, FLAGS, "interp_algo" },
|
|
{ "nn", "nearest neighbour", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_NN }, 0, 0, FLAGS, "interp_algo" },
|
|
{ "linear", "linear", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LINEAR }, 0, 0, FLAGS, "interp_algo" },
|
|
{ "cubic", "cubic", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC }, 0, 0, FLAGS, "interp_algo" },
|
|
{ "cubic2p_bspline", "2-parameter cubic (B=1, C=0)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_BSPLINE }, 0, 0, FLAGS, "interp_algo" },
|
|
{ "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" },
|
|
{ "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" },
|
|
{ "super", "supersampling", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_SUPER }, 0, 0, FLAGS, "interp_algo" },
|
|
{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LANCZOS }, 0, 0, FLAGS, "interp_algo" },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass nppscale_class = {
|
|
.class_name = "nppscale",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
static const AVFilterPad nppscale_inputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.filter_frame = nppscale_filter_frame,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
static const AVFilterPad nppscale_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = nppscale_config_props,
|
|
},
|
|
{ NULL }
|
|
};
|
|
|
|
AVFilter ff_vf_scale_npp = {
|
|
.name = "scale_npp",
|
|
.description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video "
|
|
"scaling and format conversion"),
|
|
|
|
.init = nppscale_init,
|
|
.uninit = nppscale_uninit,
|
|
.query_formats = nppscale_query_formats,
|
|
|
|
.priv_size = sizeof(NPPScaleContext),
|
|
.priv_class = &nppscale_class,
|
|
|
|
.inputs = nppscale_inputs,
|
|
.outputs = nppscale_outputs,
|
|
};
|