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ffmpeg/libavfilter/vf_scale_npp.c

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/*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; 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/hwcontext.h"
#include "libavutil/hwcontext_cuda_internal.h"
#include "libavutil/cuda_check.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/parseutils.h"
#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "scale_eval.h"
#include "video.h"
#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, device_hwctx->internal->cuda_dl, x)
static const enum AVPixelFormat supported_formats[] = {
AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUVA420P,
AV_PIX_FMT_NV12,
AV_PIX_FMT_YUV444P,
};
static const enum AVPixelFormat deinterleaved_formats[][2] = {
{ AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P },
};
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[4], planes_out[4];
AVBufferRef *frames_ctx;
AVFrame *frame;
} NPPScaleStageContext;
static const char *const var_names[] = {
"in_w", "iw",
"in_h", "ih",
"out_w", "ow",
"out_h", "oh",
"a",
"sar",
"dar",
"n",
"t",
#if FF_API_FRAME_PKT
"pos",
#endif
"main_w",
"main_h",
"main_a",
"main_sar",
"main_dar", "mdar",
"main_n",
"main_t",
#if FF_API_FRAME_PKT
"main_pos",
#endif
NULL
};
enum var_name {
VAR_IN_W, VAR_IW,
VAR_IN_H, VAR_IH,
VAR_OUT_W, VAR_OW,
VAR_OUT_H, VAR_OH,
VAR_A,
VAR_SAR,
VAR_DAR,
VAR_N,
VAR_T,
#if FF_API_FRAME_PKT
VAR_POS,
#endif
VAR_S2R_MAIN_W,
VAR_S2R_MAIN_H,
VAR_S2R_MAIN_A,
VAR_S2R_MAIN_SAR,
VAR_S2R_MAIN_DAR, VAR_S2R_MDAR,
VAR_S2R_MAIN_N,
VAR_S2R_MAIN_T,
#if FF_API_FRAME_PKT
VAR_S2R_MAIN_POS,
#endif
VARS_NB
};
enum EvalMode {
EVAL_MODE_INIT,
EVAL_MODE_FRAME,
EVAL_MODE_NB
};
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 force_original_aspect_ratio;
int force_divisible_by;
int interp_algo;
char* size_str;
AVExpr* w_pexpr;
AVExpr* h_pexpr;
double var_values[VARS_NB];
int eval_mode;
} NPPScaleContext;
const AVFilter ff_vf_scale2ref_npp;
static int config_props(AVFilterLink *outlink);
static int check_exprs(AVFilterContext* ctx)
{
NPPScaleContext* scale = ctx->priv;
unsigned vars_w[VARS_NB] = {0}, vars_h[VARS_NB] = {0};
if (!scale->w_pexpr && !scale->h_pexpr)
return AVERROR(EINVAL);
if (scale->w_pexpr)
av_expr_count_vars(scale->w_pexpr, vars_w, VARS_NB);
if (scale->h_pexpr)
av_expr_count_vars(scale->h_pexpr, vars_h, VARS_NB);
if (vars_w[VAR_OUT_W] || vars_w[VAR_OW]) {
av_log(ctx, AV_LOG_ERROR, "Width expression cannot be self-referencing: '%s'.\n", scale->w_expr);
return AVERROR(EINVAL);
}
if (vars_h[VAR_OUT_H] || vars_h[VAR_OH]) {
av_log(ctx, AV_LOG_ERROR, "Height expression cannot be self-referencing: '%s'.\n", scale->h_expr);
return AVERROR(EINVAL);
}
if ((vars_w[VAR_OUT_H] || vars_w[VAR_OH]) &&
(vars_h[VAR_OUT_W] || vars_h[VAR_OW])) {
av_log(ctx, AV_LOG_WARNING, "Circular references detected for width '%s' and height '%s' - possibly invalid.\n", scale->w_expr, scale->h_expr);
}
if (ctx->filter != &ff_vf_scale2ref_npp &&
(vars_w[VAR_S2R_MAIN_W] || vars_h[VAR_S2R_MAIN_W] ||
vars_w[VAR_S2R_MAIN_H] || vars_h[VAR_S2R_MAIN_H] ||
vars_w[VAR_S2R_MAIN_A] || vars_h[VAR_S2R_MAIN_A] ||
vars_w[VAR_S2R_MAIN_SAR] || vars_h[VAR_S2R_MAIN_SAR] ||
vars_w[VAR_S2R_MAIN_DAR] || vars_h[VAR_S2R_MAIN_DAR] ||
vars_w[VAR_S2R_MDAR] || vars_h[VAR_S2R_MDAR] ||
vars_w[VAR_S2R_MAIN_N] || vars_h[VAR_S2R_MAIN_N] ||
vars_w[VAR_S2R_MAIN_T] || vars_h[VAR_S2R_MAIN_T]
#if FF_API_FRAME_PKT
|| vars_w[VAR_S2R_MAIN_POS] || vars_h[VAR_S2R_MAIN_POS]
#endif
)) {
av_log(ctx, AV_LOG_ERROR, "Expressions with scale2ref_npp variables are not valid in scale_npp filter.\n");
return AVERROR(EINVAL);
}
if (scale->eval_mode == EVAL_MODE_INIT &&
(vars_w[VAR_N] || vars_h[VAR_N] ||
vars_w[VAR_T] || vars_h[VAR_T] ||
#if FF_API_FRAME_PKT
vars_w[VAR_POS] || vars_h[VAR_POS] ||
#endif
vars_w[VAR_S2R_MAIN_N] || vars_h[VAR_S2R_MAIN_N] ||
vars_w[VAR_S2R_MAIN_T] || vars_h[VAR_S2R_MAIN_T]
#if FF_API_FRAME_PKT
|| vars_w[VAR_S2R_MAIN_POS] || vars_h[VAR_S2R_MAIN_POS]
#endif
) ) {
av_log(ctx, AV_LOG_ERROR, "Expressions with frame variables 'n', 't', are not valid in init eval_mode.\n");
return AVERROR(EINVAL);
}
return 0;
}
static int nppscale_parse_expr(AVFilterContext* ctx, char* str_expr,
AVExpr** pexpr_ptr, const char* var,
const char* args)
{
NPPScaleContext* scale = ctx->priv;
int ret, is_inited = 0;
char* old_str_expr = NULL;
AVExpr* old_pexpr = NULL;
if (str_expr) {
old_str_expr = av_strdup(str_expr);
if (!old_str_expr)
return AVERROR(ENOMEM);
av_opt_set(scale, var, args, 0);
}
if (*pexpr_ptr) {
old_pexpr = *pexpr_ptr;
*pexpr_ptr = NULL;
is_inited = 1;
}
ret = av_expr_parse(pexpr_ptr, args, var_names, NULL, NULL, NULL, NULL, 0,
ctx);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Cannot parse expression for %s: '%s'\n", var,
args);
goto revert;
}
ret = check_exprs(ctx);
if (ret < 0)
goto revert;
if (is_inited && (ret = config_props(ctx->outputs[0])) < 0)
goto revert;
av_expr_free(old_pexpr);
old_pexpr = NULL;
av_freep(&old_str_expr);
return 0;
revert:
av_expr_free(*pexpr_ptr);
*pexpr_ptr = NULL;
if (old_str_expr) {
av_opt_set(scale, var, old_str_expr, 0);
av_free(old_str_expr);
}
if (old_pexpr)
*pexpr_ptr = old_pexpr;
return ret;
}
static av_cold int nppscale_init(AVFilterContext* ctx)
{
NPPScaleContext* scale = ctx->priv;
int i, ret;
if (!strcmp(scale->format_str, "same")) {
scale->format = AV_PIX_FMT_NONE;
} else {
scale->format = av_get_pix_fmt(scale->format_str);
if (scale->format == AV_PIX_FMT_NONE) {
av_log(ctx, AV_LOG_ERROR, "Unrecognized pixel format: %s\n", scale->format_str);
return AVERROR(EINVAL);
}
}
if (scale->size_str && (scale->w_expr || scale->h_expr)) {
av_log(ctx, AV_LOG_ERROR,
"Size and width/height exprs cannot be set at the same time.\n");
return AVERROR(EINVAL);
}
if (scale->w_expr && !scale->h_expr)
FFSWAP(char*, scale->w_expr, scale->size_str);
if (scale->size_str) {
char buf[32];
ret = av_parse_video_size(&scale->w, &scale->h, scale->size_str);
if (0 > ret) {
av_log(ctx, AV_LOG_ERROR, "Invalid size '%s'\n", scale->size_str);
return ret;
}
snprintf(buf, sizeof(buf) - 1, "%d", scale->w);
ret = av_opt_set(scale, "w", buf, 0);
if (ret < 0)
return ret;
snprintf(buf, sizeof(buf) - 1, "%d", scale->h);
ret = av_opt_set(scale, "h", buf, 0);
if (ret < 0)
return ret;
}
if (!scale->w_expr) {
ret = av_opt_set(scale, "w", "iw", 0);
if (ret < 0)
return ret;
}
if (!scale->h_expr) {
ret = av_opt_set(scale, "h", "ih", 0);
if (ret < 0)
return ret;
}
ret = nppscale_parse_expr(ctx, NULL, &scale->w_pexpr, "width", scale->w_expr);
if (ret < 0)
return ret;
ret = nppscale_parse_expr(ctx, NULL, &scale->h_pexpr, "height", scale->h_expr);
if (ret < 0)
return ret;
for (i = 0; i < FF_ARRAY_ELEMS(scale->stages); i++) {
scale->stages[i].frame = av_frame_alloc();
if (!scale->stages[i].frame)
return AVERROR(ENOMEM);
}
scale->tmp_frame = av_frame_alloc();
if (!scale->tmp_frame)
return AVERROR(ENOMEM);
return 0;
}
static int nppscale_eval_dimensions(AVFilterContext* ctx)
{
NPPScaleContext* scale = ctx->priv;
const char scale2ref = ctx->filter == &ff_vf_scale2ref_npp;
const AVFilterLink* inlink = ctx->inputs[scale2ref ? 1 : 0];
char* expr;
int eval_w, eval_h;
int ret;
double res;
scale->var_values[VAR_IN_W] = scale->var_values[VAR_IW] = inlink->w;
scale->var_values[VAR_IN_H] = scale->var_values[VAR_IH] = inlink->h;
scale->var_values[VAR_OUT_W] = scale->var_values[VAR_OW] = NAN;
scale->var_values[VAR_OUT_H] = scale->var_values[VAR_OH] = NAN;
scale->var_values[VAR_A] = (double)inlink->w / inlink->h;
scale->var_values[VAR_SAR] = inlink->sample_aspect_ratio.num ?
(double)inlink->sample_aspect_ratio.num / inlink->sample_aspect_ratio.den : 1;
scale->var_values[VAR_DAR] = scale->var_values[VAR_A] * scale->var_values[VAR_SAR];
if (scale2ref) {
const AVFilterLink* main_link = ctx->inputs[0];
scale->var_values[VAR_S2R_MAIN_W] = main_link->w;
scale->var_values[VAR_S2R_MAIN_H] = main_link->h;
scale->var_values[VAR_S2R_MAIN_A] = (double)main_link->w / main_link->h;
scale->var_values[VAR_S2R_MAIN_SAR] = main_link->sample_aspect_ratio.num ?
(double)main_link->sample_aspect_ratio.num / main_link->sample_aspect_ratio.den : 1;
scale->var_values[VAR_S2R_MAIN_DAR] = scale->var_values[VAR_S2R_MDAR] =
scale->var_values[VAR_S2R_MAIN_A] * scale->var_values[VAR_S2R_MAIN_SAR];
}
res = av_expr_eval(scale->w_pexpr, scale->var_values, NULL);
eval_w = scale->var_values[VAR_OUT_W] = scale->var_values[VAR_OW] = (int)res == 0 ? inlink->w : (int)res;
res = av_expr_eval(scale->h_pexpr, scale->var_values, NULL);
if (isnan(res)) {
expr = scale->h_expr;
ret = AVERROR(EINVAL);
goto fail;
}
eval_h = scale->var_values[VAR_OUT_H] = scale->var_values[VAR_OH] = (int)res == 0 ? inlink->h : (int)res;
res = av_expr_eval(scale->w_pexpr, scale->var_values, NULL);
if (isnan(res)) {
expr = scale->w_expr;
ret = AVERROR(EINVAL);
goto fail;
}
eval_w = scale->var_values[VAR_OUT_W] = scale->var_values[VAR_OW] = (int)res == 0 ? inlink->w : (int)res;
scale->w = eval_w;
scale->h = eval_h;
return 0;
fail:
av_log(ctx, AV_LOG_ERROR, "Error when evaluating the expression '%s'.\n",
expr);
return ret;
}
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);
av_expr_free(s->w_pexpr);
av_expr_free(s->h_pexpr);
s->w_pexpr = s->h_pexpr = NULL;
}
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;
}
if (AV_PIX_FMT_YUVA420P == stage->in_fmt) {
stage->planes_in[3].width = stage->planes_in[0].width;
stage->planes_in[3].height = stage->planes_in[0].height;
stage->planes_out[3].width = stage->planes_out[0].width;
stage->planes_out[3].height = stage->planes_out[0].height;
}
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->interp_algo == NPPI_INTER_SUPER &&
(out_width > in_width && out_height > in_height)) {
s->interp_algo = NPPI_INTER_LANCZOS;
av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using lanczos instead.\n");
}
if (s->interp_algo == NPPI_INTER_SUPER &&
!(out_width < in_width && out_height < in_height)) {
s->interp_algo = NPPI_INTER_CUBIC;
av_log(ctx, AV_LOG_WARNING, "super-sampling not supported for output dimensions, using cubic instead.\n");
}
}
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)
ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->stages[last_stage].frames_ctx);
else
ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(ctx->inputs[0]->hw_frames_ctx);
if (!ctx->outputs[0]->hw_frames_ctx)
return AVERROR(ENOMEM);
return 0;
}
static int config_props(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink0 = outlink->src->inputs[0];
AVFilterLink *inlink = ctx->filter == &ff_vf_scale2ref_npp ?
outlink->src->inputs[1] :
outlink->src->inputs[0];
NPPScaleContext *s = ctx->priv;
int ret;
if ((ret = nppscale_eval_dimensions(ctx)) < 0)
goto fail;
ff_scale_adjust_dimensions(inlink, &s->w, &s->h,
s->force_original_aspect_ratio,
s->force_divisible_by);
if (s->w > INT_MAX || s->h > INT_MAX ||
(s->h * inlink->w) > INT_MAX ||
(s->w * inlink->h) > INT_MAX)
av_log(ctx, AV_LOG_ERROR, "Rescaled value for width or height is too big.\n");
outlink->w = s->w;
outlink->h = s->h;
ret = init_processing_chain(ctx, inlink0->w, inlink0->h, outlink->w, outlink->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:
return ret;
}
static int config_props_ref(AVFilterLink *outlink)
{
AVFilterLink *inlink = outlink->src->inputs[1];
AVFilterContext *ctx = outlink->src;
outlink->w = inlink->w;
outlink->h = inlink->h;
outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
outlink->time_base = inlink->time_base;
outlink->frame_rate = inlink->frame_rate;
ctx->outputs[1]->hw_frames_ctx = av_buffer_ref(ctx->inputs[1]->hw_frames_ctx);
return 0;
}
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(stage->planes_in) && 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(AVFilterLink *link, AVFrame *out, AVFrame *in)
{
AVFilterContext *ctx = link->dst;
NPPScaleContext *s = ctx->priv;
AVFilterLink *outlink = ctx->outputs[0];
AVFrame *src = in;
char buf[32];
int i, ret, last_stage = -1;
int frame_changed;
frame_changed = in->width != link->w ||
in->height != link->h ||
in->format != link->format ||
in->sample_aspect_ratio.den != link->sample_aspect_ratio.den ||
in->sample_aspect_ratio.num != link->sample_aspect_ratio.num;
if (s->eval_mode == EVAL_MODE_FRAME || frame_changed) {
unsigned vars_w[VARS_NB] = { 0 }, vars_h[VARS_NB] = { 0 };
av_expr_count_vars(s->w_pexpr, vars_w, VARS_NB);
av_expr_count_vars(s->h_pexpr, vars_h, VARS_NB);
if (s->eval_mode == EVAL_MODE_FRAME && !frame_changed && ctx->filter != &ff_vf_scale2ref_npp &&
!(vars_w[VAR_N] || vars_w[VAR_T]
#if FF_API_FRAME_PKT
|| vars_w[VAR_POS]
#endif
) &&
!(vars_h[VAR_N] || vars_h[VAR_T]
#if FF_API_FRAME_PKT
|| vars_h[VAR_POS]
#endif
) && s->w && s->h)
goto scale;
if (s->eval_mode == EVAL_MODE_INIT) {
snprintf(buf, sizeof(buf)-1, "%d", outlink->w);
av_opt_set(s, "w", buf, 0);
snprintf(buf, sizeof(buf)-1, "%d", outlink->h);
av_opt_set(s, "h", buf, 0);
ret = nppscale_parse_expr(ctx, NULL, &s->w_pexpr, "width", s->w_expr);
if (ret < 0)
return ret;
ret = nppscale_parse_expr(ctx, NULL, &s->h_pexpr, "height", s->h_expr);
if (ret < 0)
return ret;
}
if (ctx->filter == &ff_vf_scale2ref_npp) {
s->var_values[VAR_S2R_MAIN_N] = link->frame_count_out;
s->var_values[VAR_S2R_MAIN_T] = TS2T(in->pts, link->time_base);
#if FF_API_FRAME_PKT
FF_DISABLE_DEPRECATION_WARNINGS
s->var_values[VAR_S2R_MAIN_POS] = in->pkt_pos == -1 ? NAN : in->pkt_pos;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
} else {
s->var_values[VAR_N] = link->frame_count_out;
s->var_values[VAR_T] = TS2T(in->pts, link->time_base);
#if FF_API_FRAME_PKT
FF_DISABLE_DEPRECATION_WARNINGS
s->var_values[VAR_POS] = in->pkt_pos == -1 ? NAN : in->pkt_pos;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
link->format = in->format;
link->w = in->width;
link->h = in->height;
link->sample_aspect_ratio.den = in->sample_aspect_ratio.den;
link->sample_aspect_ratio.num = in->sample_aspect_ratio.num;
if ((ret = config_props(outlink)) < 0)
return ret;
}
scale:
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;
s->tmp_frame->width = src->width;
s->tmp_frame->height = src->height;
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;
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;
}
ret = CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPushCurrent(device_hwctx->cuda_ctx));
if (ret < 0)
goto fail;
ret = nppscale_scale(link, out, in);
CHECK_CU(device_hwctx->internal->cuda_dl->cuCtxPopCurrent(&dummy));
if (ret < 0)
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);
av_frame_free(&in);
return ff_filter_frame(outlink, out);
fail:
av_frame_free(&in);
av_frame_free(&out);
return ret;
}
static int nppscale_filter_frame_ref(AVFilterLink *link, AVFrame *in)
{
NPPScaleContext *scale = link->dst->priv;
AVFilterLink *outlink = link->dst->outputs[1];
int frame_changed;
frame_changed = in->width != link->w ||
in->height != link->h ||
in->format != link->format ||
in->sample_aspect_ratio.den != link->sample_aspect_ratio.den ||
in->sample_aspect_ratio.num != link->sample_aspect_ratio.num;
if (frame_changed) {
link->format = in->format;
link->w = in->width;
link->h = in->height;
link->sample_aspect_ratio.num = in->sample_aspect_ratio.num;
link->sample_aspect_ratio.den = in->sample_aspect_ratio.den;
config_props_ref(outlink);
}
if (scale->eval_mode == EVAL_MODE_FRAME) {
scale->var_values[VAR_N] = link->frame_count_out;
scale->var_values[VAR_T] = TS2T(in->pts, link->time_base);
#if FF_API_FRAME_PKT
FF_DISABLE_DEPRECATION_WARNINGS
scale->var_values[VAR_POS] = in->pkt_pos == -1 ? NAN : in->pkt_pos;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
return ff_filter_frame(outlink, in);
}
static int request_frame(AVFilterLink *outlink)
{
return ff_request_frame(outlink->src->inputs[0]);
}
static int request_frame_ref(AVFilterLink *outlink)
{
return ff_request_frame(outlink->src->inputs[1]);
}
#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, .flags = FLAGS },
{ "h", "Output video height", OFFSET(h_expr), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ "format", "Output pixel format", OFFSET(format_str), AV_OPT_TYPE_STRING, { .str = "same" }, .flags = FLAGS },
{ "s", "Output video size", OFFSET(size_str), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS },
{ "interp_algo", "Interpolation algorithm used for resizing", OFFSET(interp_algo), AV_OPT_TYPE_INT, { .i64 = NPPI_INTER_CUBIC }, 0, INT_MAX, FLAGS, .unit = "interp_algo" },
{ "nn", "nearest neighbour", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_NN }, 0, 0, FLAGS, .unit = "interp_algo" },
{ "linear", "linear", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LINEAR }, 0, 0, FLAGS, .unit = "interp_algo" },
{ "cubic", "cubic", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC }, 0, 0, FLAGS, .unit = "interp_algo" },
{ "cubic2p_bspline", "2-parameter cubic (B=1, C=0)", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_CUBIC2P_BSPLINE }, 0, 0, FLAGS, .unit = "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, .unit = "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, .unit = "interp_algo" },
{ "super", "supersampling", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_SUPER }, 0, 0, FLAGS, .unit = "interp_algo" },
{ "lanczos", "Lanczos", 0, AV_OPT_TYPE_CONST, { .i64 = NPPI_INTER_LANCZOS }, 0, 0, FLAGS, .unit = "interp_algo" },
{ "force_original_aspect_ratio", "decrease or increase w/h if necessary to keep the original AR", OFFSET(force_original_aspect_ratio), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, FLAGS, .unit = "force_oar" },
{ "disable", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 0 }, 0, 0, FLAGS, .unit = "force_oar" },
{ "decrease", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 1 }, 0, 0, FLAGS, .unit = "force_oar" },
{ "increase", NULL, 0, AV_OPT_TYPE_CONST, {.i64 = 2 }, 0, 0, FLAGS, .unit = "force_oar" },
{ "force_divisible_by", "enforce that the output resolution is divisible by a defined integer when force_original_aspect_ratio is used", OFFSET(force_divisible_by), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 256, FLAGS },
{ "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, { .i64 = EVAL_MODE_INIT }, 0, EVAL_MODE_NB-1, FLAGS, .unit = "eval" },
{ "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, { .i64 = EVAL_MODE_INIT }, 0, 0, FLAGS, .unit = "eval" },
{ "frame", "eval expressions during initialization and per-frame", 0, AV_OPT_TYPE_CONST, { .i64 = EVAL_MODE_FRAME }, 0, 0, FLAGS, .unit = "eval" },
{ NULL },
};
static const AVClass nppscale_class = {
.class_name = "nppscale",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
.category = AV_CLASS_CATEGORY_FILTER,
};
static const AVFilterPad nppscale_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = nppscale_filter_frame,
}
};
static const AVFilterPad nppscale_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props,
}
};
const 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,
.priv_size = sizeof(NPPScaleContext),
.priv_class = &nppscale_class,
FILTER_INPUTS(nppscale_inputs),
FILTER_OUTPUTS(nppscale_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};
static const AVFilterPad nppscale2ref_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = nppscale_filter_frame,
},
{
.name = "ref",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = nppscale_filter_frame_ref,
}
};
static const AVFilterPad nppscale2ref_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props,
.request_frame= request_frame,
},
{
.name = "ref",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = config_props_ref,
.request_frame= request_frame_ref,
}
};
const AVFilter ff_vf_scale2ref_npp = {
.name = "scale2ref_npp",
.description = NULL_IF_CONFIG_SMALL("NVIDIA Performance Primitives video "
"scaling and format conversion to the "
"given reference."),
.init = nppscale_init,
.uninit = nppscale_uninit,
.priv_size = sizeof(NPPScaleContext),
.priv_class = &nppscale_class,
FILTER_INPUTS(nppscale2ref_inputs),
FILTER_OUTPUTS(nppscale2ref_outputs),
FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};
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