[FFmpeg-cvslog] lavfi: add an NVIDIA NPP-based scaling filter
Anton Khirnov
git at videolan.org
Mon Apr 18 16:34:31 CEST 2016
ffmpeg | branch: master | Anton Khirnov <anton at khirnov.net> | Sun Jan 17 15:02:17 2016 +0100| [8a02a8031ef4f98faf5647f0e01a8922247bf748] | committer: Anton Khirnov
lavfi: add an NVIDIA NPP-based scaling filter
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8a02a8031ef4f98faf5647f0e01a8922247bf748
---
Changelog | 1 +
configure | 5 +
doc/filters.texi | 38 +++
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/version.h | 2 +-
libavfilter/vf_scale_npp.c | 660 ++++++++++++++++++++++++++++++++++++++++++++
7 files changed, 707 insertions(+), 1 deletion(-)
diff --git a/Changelog b/Changelog
index 4a7d2a1..692c865 100644
--- a/Changelog
+++ b/Changelog
@@ -52,6 +52,7 @@ version <next>:
- G.723.1 muxer and encoder
- compressed SWF
- VAAPI-accelerated format conversion and scaling
+- libnpp/CUDA-accelerated format conversion and scaling
version 11:
diff --git a/configure b/configure
index f016ebd1..a68a5d7 100755
--- a/configure
+++ b/configure
@@ -195,6 +195,7 @@ External library support:
--enable-libkvazaar enable HEVC encoding via libkvazaar [no]
--enable-libmfx enable HW acceleration through libmfx
--enable-libmp3lame enable MP3 encoding via libmp3lame [no]
+ --enable-libnpp enable NVIDIA Performance Primitives-based code [no]
--enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
--enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
--enable-libopencv enable video filtering via libopencv [no]
@@ -1222,6 +1223,7 @@ EXTERNAL_LIBRARY_LIST="
libkvazaar
libmfx
libmp3lame
+ libnpp
libopencore_amrnb
libopencore_amrwb
libopencv
@@ -2359,6 +2361,7 @@ interlace_filter_deps="gpl"
ocv_filter_deps="libopencv"
resample_filter_deps="avresample"
scale_filter_deps="swscale"
+scale_npp_filter_deps="cuda libnpp"
scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
# examples
@@ -4024,6 +4027,7 @@ die_license_disabled gpl x11grab
die_license_disabled nonfree cuda
die_license_disabled nonfree libfaac
die_license_disabled nonfree libfdk_aac
+die_license_disabled nonfree libnpp
die_license_disabled nonfree nvenc
die_license_disabled nonfree openssl
@@ -4520,6 +4524,7 @@ enabled libilbc && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -li
enabled libkvazaar && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
enabled libmfx && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
enabled libmp3lame && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
+enabled libnpp && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
enabled libopencv && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
diff --git a/doc/filters.texi b/doc/filters.texi
index 722c8b0..23e4286 100644
--- a/doc/filters.texi
+++ b/doc/filters.texi
@@ -2181,6 +2181,44 @@ scale="trunc(3/2*iw/hsub)*hsub:trunc(3/2*ih/vsub)*vsub"
scale=w='min(500\, iw*3/2):h=-1'
@end example
+ at section scale_npp
+
+Use the NVIDIA Performance Primitives (libnpp) to perform scaling and/or pixel
+format conversion on CUDA video frames. Setting the output width and height
+works in the same way as for the @var{scale} filter.
+
+The following additional options are accepted:
+ at table @option
+ at item format
+The pixel format of the output CUDA frames. If set to the string "same" (the
+default), the input format will be kept. Note that automatic format negotiation
+and conversion is not yet supported for hardware frames
+
+ at item interp_algo
+The interpolation algorithm used for resizing. One of the following:
+ at table @option
+ at item nn
+Nearest neighbour.
+
+ at item linear
+ at item cubic
+ at item cubic2p_bspline
+2-parameter cubic (B=1, C=0)
+
+ at item cubic2p_catmullrom
+2-parameter cubic (B=0, C=1/2)
+
+ at item cubic2p_b05c03
+2-parameter cubic (B=1/2, C=3/10)
+
+ at item super
+Supersampling
+
+ at item lanczos
+ at end table
+
+ at end table
+
@section select
Select frames to pass in output.
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 0f9643d..39e167f 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -71,6 +71,7 @@ OBJS-$(CONFIG_OVERLAY_FILTER) += vf_overlay.o
OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
OBJS-$(CONFIG_PIXDESCTEST_FILTER) += vf_pixdesctest.o
OBJS-$(CONFIG_SCALE_FILTER) += vf_scale.o
+OBJS-$(CONFIG_SCALE_NPP_FILTER) += vf_scale_npp.o
OBJS-$(CONFIG_SCALE_VAAPI_FILTER) += vf_scale_vaapi.o
OBJS-$(CONFIG_SELECT_FILTER) += vf_select.o
OBJS-$(CONFIG_SETDAR_FILTER) += vf_aspect.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index d76db06..c6eeb1f 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -97,6 +97,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(PAD, pad, vf);
REGISTER_FILTER(PIXDESCTEST, pixdesctest, vf);
REGISTER_FILTER(SCALE, scale, vf);
+ REGISTER_FILTER(SCALE_NPP, scale_npp, vf);
REGISTER_FILTER(SCALE_VAAPI, scale_vaapi, vf);
REGISTER_FILTER(SELECT, select, vf);
REGISTER_FILTER(SETDAR, setdar, vf);
diff --git a/libavfilter/version.h b/libavfilter/version.h
index 1ca0f37..c8102dd 100644
--- a/libavfilter/version.h
+++ b/libavfilter/version.h
@@ -30,7 +30,7 @@
#include "libavutil/version.h"
#define LIBAVFILTER_VERSION_MAJOR 6
-#define LIBAVFILTER_VERSION_MINOR 3
+#define LIBAVFILTER_VERSION_MINOR 4
#define LIBAVFILTER_VERSION_MICRO 0
#define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
diff --git a/libavfilter/vf_scale_npp.c b/libavfilter/vf_scale_npp.c
new file mode 100644
index 0000000..247baf1
--- /dev/null
+++ b/libavfilter/vf_scale_npp.c
@@ -0,0 +1,660 @@
+/*
+ * This file is part of Libav.
+ *
+ * Libav is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * Libav is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with Libav; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * scale video filter
+ */
+
+#include <nppi.h>
+#include <stdio.h>
+#include <string.h>
+
+#include "libavutil/avstring.h"
+#include "libavutil/common.h"
+#include "libavutil/eval.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/hwcontext_cuda.h"
+#include "libavutil/internal.h"
+#include "libavutil/mathematics.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+
+#include "avfilter.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+static const enum AVPixelFormat supported_formats[] = {
+ AV_PIX_FMT_YUV420P,
+ AV_PIX_FMT_NV12,
+ AV_PIX_FMT_YUV444P,
+};
+
+static const enum AVPixelFormat deinterleaved_formats[][2] = {
+ { AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
+};
+
+static const char *const var_names[] = {
+ "PI",
+ "PHI",
+ "E",
+ "in_w", "iw",
+ "in_h", "ih",
+ "out_w", "ow",
+ "out_h", "oh",
+ "a", "dar",
+ "sar",
+ NULL
+};
+
+enum var_name {
+ VAR_PI,
+ VAR_PHI,
+ VAR_E,
+ VAR_IN_W, VAR_IW,
+ VAR_IN_H, VAR_IH,
+ VAR_OUT_W, VAR_OW,
+ VAR_OUT_H, VAR_OH,
+ VAR_A, VAR_DAR,
+ VAR_SAR,
+ VARS_NB
+};
+
+enum ScaleStage {
+ STAGE_DEINTERLEAVE,
+ STAGE_RESIZE,
+ STAGE_INTERLEAVE,
+ STAGE_NB,
+};
+
+typedef struct NPPScaleStageContext {
+ int stage_needed;
+ enum AVPixelFormat in_fmt;
+ enum AVPixelFormat out_fmt;
+
+ struct {
+ int width;
+ int height;
+ } planes_in[3], planes_out[3];
+
+ AVBufferRef *frames_ctx;
+ AVFrame *frame;
+} NPPScaleStageContext;
+
+typedef struct NPPScaleContext {
+ const AVClass *class;
+
+ NPPScaleStageContext stages[STAGE_NB];
+ AVFrame *tmp_frame;
+ int passthrough;
+
+ int shift_width, shift_height;
+
+ /**
+ * New dimensions. Special values are:
+ * 0 = original width/height
+ * -1 = keep original aspect
+ */
+ int w, h;
+
+ /**
+ * Output sw format. AV_PIX_FMT_NONE for no conversion.
+ */
+ enum AVPixelFormat format;
+
+ char *w_expr; ///< width expression string
+ char *h_expr; ///< height expression string
+ char *format_str;
+
+ int interp_algo;
+} NPPScaleContext;
+
+static int nppscale_init(AVFilterContext *ctx)
+{
+ NPPScaleContext *s = ctx->priv;
+ int i;
+
+ if (!strcmp(s->format_str, "same")) {
+ s->format = AV_PIX_FMT_NONE;
+ } else {
+ s->format = av_get_pix_fmt(s->format_str);
+ if (s->format == AV_PIX_FMT_NONE) {
+ av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", s->format_str);
+ return AVERROR(EINVAL);
+ }
+ }
+
+ for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+ s->stages[i].frame = av_frame_alloc();
+ if (!s->stages[i].frame)
+ return AVERROR(ENOMEM);
+ }
+ s->tmp_frame = av_frame_alloc();
+ if (!s->tmp_frame)
+ return AVERROR(ENOMEM);
+
+ return 0;
+}
+
+static void nppscale_uninit(AVFilterContext *ctx)
+{
+ NPPScaleContext *s = ctx->priv;
+ int i;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+ av_frame_free(&s->stages[i].frame);
+ av_buffer_unref(&s->stages[i].frames_ctx);
+ }
+ av_frame_free(&s->tmp_frame);
+}
+
+static int nppscale_query_formats(AVFilterContext *ctx)
+{
+ static const enum AVPixelFormat pixel_formats[] = {
+ AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
+ };
+ AVFilterFormats *pix_fmts = ff_make_format_list(pixel_formats);
+
+ ff_set_common_formats(ctx, pix_fmts);
+
+ return 0;
+}
+
+static int init_stage(NPPScaleStageContext *stage, AVBufferRef *device_ctx)
+{
+ AVBufferRef *out_ref = NULL;
+ AVHWFramesContext *out_ctx;
+ int in_sw, in_sh, out_sw, out_sh;
+ int ret, i;
+
+ av_pix_fmt_get_chroma_sub_sample(stage->in_fmt, &in_sw, &in_sh);
+ av_pix_fmt_get_chroma_sub_sample(stage->out_fmt, &out_sw, &out_sh);
+ if (!stage->planes_out[0].width) {
+ stage->planes_out[0].width = stage->planes_in[0].width;
+ stage->planes_out[0].height = stage->planes_in[0].height;
+ }
+
+ for (i = 1; i < FF_ARRAY_ELEMS(stage->planes_in); i++) {
+ stage->planes_in[i].width = stage->planes_in[0].width >> in_sw;
+ stage->planes_in[i].height = stage->planes_in[0].height >> in_sh;
+ stage->planes_out[i].width = stage->planes_out[0].width >> out_sw;
+ stage->planes_out[i].height = stage->planes_out[0].height >> out_sh;
+ }
+
+ out_ref = av_hwframe_ctx_alloc(device_ctx);
+ if (!out_ref)
+ return AVERROR(ENOMEM);
+ out_ctx = (AVHWFramesContext*)out_ref->data;
+
+ out_ctx->format = AV_PIX_FMT_CUDA;
+ out_ctx->sw_format = stage->out_fmt;
+ out_ctx->width = FFALIGN(stage->planes_out[0].width, 32);
+ out_ctx->height = FFALIGN(stage->planes_out[0].height, 32);
+
+ ret = av_hwframe_ctx_init(out_ref);
+ if (ret < 0)
+ goto fail;
+
+ av_frame_unref(stage->frame);
+ ret = av_hwframe_get_buffer(out_ref, stage->frame, 0);
+ if (ret < 0)
+ goto fail;
+
+ stage->frame->width = stage->planes_out[0].width;
+ stage->frame->height = stage->planes_out[0].height;
+
+ av_buffer_unref(&stage->frames_ctx);
+ stage->frames_ctx = out_ref;
+
+ return 0;
+fail:
+ av_buffer_unref(&out_ref);
+ return ret;
+}
+
+static int format_is_supported(enum AVPixelFormat fmt)
+{
+ int i;
+
+ for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++)
+ if (supported_formats[i] == fmt)
+ return 1;
+ return 0;
+}
+
+static enum AVPixelFormat get_deinterleaved_format(enum AVPixelFormat fmt)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(fmt);
+ int i, planes;
+
+ planes = av_pix_fmt_count_planes(fmt);
+ if (planes == desc->nb_components)
+ return fmt;
+ for (i = 0; i < FF_ARRAY_ELEMS(deinterleaved_formats); i++)
+ if (deinterleaved_formats[i][0] == fmt)
+ return deinterleaved_formats[i][1];
+ return AV_PIX_FMT_NONE;
+}
+
+static int init_processing_chain(AVFilterContext *ctx, int in_width, int in_height,
+ int out_width, int out_height)
+{
+ NPPScaleContext *s = ctx->priv;
+
+ AVHWFramesContext *in_frames_ctx;
+
+ enum AVPixelFormat in_format;
+ enum AVPixelFormat out_format;
+ enum AVPixelFormat in_deinterleaved_format;
+ enum AVPixelFormat out_deinterleaved_format;
+
+ int i, ret, last_stage = -1;
+
+ /* check that we have a hw context */
+ if (!ctx->inputs[0]->hw_frames_ctx) {
+ av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n");
+ return AVERROR(EINVAL);
+ }
+ in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data;
+ in_format = in_frames_ctx->sw_format;
+ out_format = (s->format == AV_PIX_FMT_NONE) ? in_format : s->format;
+
+ if (!format_is_supported(in_format)) {
+ av_log(ctx, AV_LOG_ERROR, "Unsupported input format: %s\n",
+ av_get_pix_fmt_name(in_format));
+ return AVERROR(ENOSYS);
+ }
+ if (!format_is_supported(out_format)) {
+ av_log(ctx, AV_LOG_ERROR, "Unsupported output format: %s\n",
+ av_get_pix_fmt_name(out_format));
+ return AVERROR(ENOSYS);
+ }
+
+ in_deinterleaved_format = get_deinterleaved_format(in_format);
+ out_deinterleaved_format = get_deinterleaved_format(out_format);
+ if (in_deinterleaved_format == AV_PIX_FMT_NONE ||
+ out_deinterleaved_format == AV_PIX_FMT_NONE)
+ return AVERROR_BUG;
+
+ /* figure out which stages need to be done */
+ if (in_width != out_width || in_height != out_height ||
+ in_deinterleaved_format != out_deinterleaved_format)
+ s->stages[STAGE_RESIZE].stage_needed = 1;
+
+ if (!s->stages[STAGE_RESIZE].stage_needed && in_format == out_format)
+ s->passthrough = 1;
+
+ if (!s->passthrough) {
+ if (in_format != in_deinterleaved_format)
+ s->stages[STAGE_DEINTERLEAVE].stage_needed = 1;
+ if (out_format != out_deinterleaved_format)
+ s->stages[STAGE_INTERLEAVE].stage_needed = 1;
+ }
+
+ s->stages[STAGE_DEINTERLEAVE].in_fmt = in_format;
+ s->stages[STAGE_DEINTERLEAVE].out_fmt = in_deinterleaved_format;
+ s->stages[STAGE_DEINTERLEAVE].planes_in[0].width = in_width;
+ s->stages[STAGE_DEINTERLEAVE].planes_in[0].height = in_height;
+
+ s->stages[STAGE_RESIZE].in_fmt = in_deinterleaved_format;
+ s->stages[STAGE_RESIZE].out_fmt = out_deinterleaved_format;
+ s->stages[STAGE_RESIZE].planes_in[0].width = in_width;
+ s->stages[STAGE_RESIZE].planes_in[0].height = in_height;
+ s->stages[STAGE_RESIZE].planes_out[0].width = out_width;
+ s->stages[STAGE_RESIZE].planes_out[0].height = out_height;
+
+ s->stages[STAGE_INTERLEAVE].in_fmt = out_deinterleaved_format;
+ s->stages[STAGE_INTERLEAVE].out_fmt = out_format;
+ s->stages[STAGE_INTERLEAVE].planes_in[0].width = out_width;
+ s->stages[STAGE_INTERLEAVE].planes_in[0].height = out_height;
+
+ /* init the hardware contexts */
+ for (i = 0; i < FF_ARRAY_ELEMS(s->stages); i++) {
+ if (!s->stages[i].stage_needed)
+ continue;
+
+ ret = init_stage(&s->stages[i], in_frames_ctx->device_ref);
+ if (ret < 0)
+ return ret;
+
+ last_stage = i;
+ }
+
+ if (last_stage < 0)
+ return AVERROR_BUG;
+ ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
+ if (!ctx->outputs[0]->hw_frames_ctx)
+ return AVERROR(ENOMEM);
+
+ return 0;
+}
+
+static int nppscale_config_props(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ AVFilterLink *inlink = outlink->src->inputs[0];
+ NPPScaleContext *s = ctx->priv;
+ int64_t w, h;
+ double var_values[VARS_NB], res;
+ char *expr;
+ int ret;
+
+ var_values[VAR_PI] = M_PI;
+ var_values[VAR_PHI] = M_PHI;
+ var_values[VAR_E] = M_E;
+ var_values[VAR_IN_W] = var_values[VAR_IW] = inlink->w;
+ var_values[VAR_IN_H] = var_values[VAR_IH] = inlink->h;
+ var_values[VAR_OUT_W] = var_values[VAR_OW] = NAN;
+ var_values[VAR_OUT_H] = var_values[VAR_OH] = NAN;
+ var_values[VAR_A] = (double) inlink->w / inlink->h;
+ var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
+ (double) inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
+ var_values[VAR_DAR] = var_values[VAR_A] * var_values[VAR_SAR];
+
+ /* evaluate width and height */
+ av_expr_parse_and_eval(&res, (expr = s->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx);
+ s->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
+ if ((ret = av_expr_parse_and_eval(&res, (expr = s->h_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto fail;
+ s->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
+ /* evaluate again the width, as it may depend on the output height */
+ if ((ret = av_expr_parse_and_eval(&res, (expr = s->w_expr),
+ var_names, var_values,
+ NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
+ goto fail;
+ s->w = res;
+
+ w = s->w;
+ h = s->h;
+
+ /* sanity check params */
+ if (w < -1 || h < -1) {
+ av_log(ctx, AV_LOG_ERROR, "Size values less than -1 are not acceptable.\n");
+ return AVERROR(EINVAL);
+ }
+ if (w == -1 && h == -1)
+ s->w = s->h = 0;
+
+ if (!(w = s->w))
+ w = inlink->w;
+ if (!(h = s->h))
+ h = inlink->h;
+ if (w == -1)
+ w = av_rescale(h, inlink->w, inlink->h);
+ if (h == -1)
+ h = av_rescale(w, inlink->h, inlink->w);
+
+ if (w > INT_MAX || h > INT_MAX ||
+ (h * inlink->w) > INT_MAX ||
+ (w * inlink->h) > INT_MAX)
+ av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
+
+ outlink->w = w;
+ outlink->h = h;
+
+ ret = init_processing_chain(ctx, inlink->w, inlink->h, w, h);
+ if (ret < 0)
+ return ret;
+
+ av_log(ctx, AV_LOG_VERBOSE, "w:%d h:%d -> w:%d h:%d\n",
+ inlink->w, inlink->h, outlink->w, outlink->h);
+
+ if (inlink->sample_aspect_ratio.num)
+ outlink->sample_aspect_ratio = av_mul_q((AVRational){outlink->h*inlink->w,
+ outlink->w*inlink->h},
+ inlink->sample_aspect_ratio);
+ else
+ outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
+
+ return 0;
+
+fail:
+ av_log(NULL, AV_LOG_ERROR,
+ "Error when evaluating the expression '%s'\n", expr);
+ return ret;
+}
+
+static int nppscale_deinterleave(AVFilterContext *ctx, NPPScaleStageContext *stage,
+ AVFrame *out, AVFrame *in)
+{
+ AVHWFramesContext *in_frames_ctx = (AVHWFramesContext*)in->hw_frames_ctx->data;
+ NppStatus err;
+
+ switch (in_frames_ctx->sw_format) {
+ case AV_PIX_FMT_NV12:
+ err = nppiYCbCr420_8u_P2P3R(in->data[0], in->linesize[0],
+ in->data[1], in->linesize[1],
+ out->data, out->linesize,
+ (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 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_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,
+};
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