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lavfi: Add pad_vaapi filter 

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
This commit is contained in:
Haihao Xiang 2024-03-18 14:06:14 +08:00
parent b2e2fb0344
commit 42eb10ecc6
5 changed files with 363 additions and 0 deletions
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1
configure vendored
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@ -3956,6 +3956,7 @@ vstack_qsv_filter_deps="libmfx"
vstack_qsv_filter_select="qsvvpp"
xstack_qsv_filter_deps="libmfx"
xstack_qsv_filter_select="qsvvpp"
pad_vaapi_filter_deps="vaapi_1"
# examples
avio_http_serve_files_deps="avformat avutil fork"

77
doc/filters.texi
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@ -27955,6 +27955,83 @@ first input stream. For the syntax of this option, check the
See @ref{xstack}.
@end table
@section pad_vaapi
Add paddings to the input image, and place the original input at the
provided @var{x}, @var{y} coordinates.
It accepts the following options:
@table @option
@item width, w
@item height, h
Specify an expression for the size of the output image with the
paddings added. If the value for @var{width} or @var{height} is 0, the
corresponding input size is used for the output.
The @var{width} expression can reference the value set by the
@var{height} expression, and vice versa.
The default value of @var{width} and @var{height} is 0.
@item x
@item y
Specify the offsets to place the input image at within the padded area,
with respect to the top/left border of the output image.
The @var{x} expression can reference the value set by the @var{y}
expression, and vice versa.
The default value of @var{x} and @var{y} is 0.
If @var{x} or @var{y} evaluate to a negative number, they'll be changed
so the input image is centered on the padded area.
@item color
Specify the color of the padded area. For the syntax of this option,
check the @ref{color syntax,,"Color" section in the ffmpeg-utils
manual,ffmpeg-utils}.
@item aspect
Pad to an aspect instead to a resolution.
@end table
The value for the @var{width}, @var{height}, @var{x}, and @var{y}
options are expressions containing the following constants:
@table @option
@item in_w
@item in_h
The input video width and height.
@item iw
@item ih
These are the same as @var{in_w} and @var{in_h}.
@item out_w
@item out_h
The output width and height (the size of the padded area), as
specified by the @var{width} and @var{height} expressions.
@item ow
@item oh
These are the same as @var{out_w} and @var{out_h}.
@item x
@item y
The x and y offsets as specified by the @var{x} and @var{y}
expressions, or NAN if not yet specified.
@item a
same as @var{iw} / @var{ih}
@item sar
input sample aspect ratio
@item dar
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@end table
@c man end VAAPI VIDEO FILTERS
@chapter Vulkan Video Filters

1
libavfilter/Makefile
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@ -581,6 +581,7 @@ OBJS-$(CONFIG_XSTACK_VAAPI_FILTER) += vf_stack_vaapi.o framesync.o vaa
OBJS-$(CONFIG_HSTACK_QSV_FILTER) += vf_stack_qsv.o framesync.o
OBJS-$(CONFIG_VSTACK_QSV_FILTER) += vf_stack_qsv.o framesync.o
OBJS-$(CONFIG_XSTACK_QSV_FILTER) += vf_stack_qsv.o framesync.o
OBJS-$(CONFIG_PAD_VAAPI_FILTER) += vf_pad_vaapi.o vaapi_vpp.o
OBJS-$(CONFIG_ALLRGB_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_ALLYUV_FILTER) += vsrc_testsrc.o

1
libavfilter/allfilters.c
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@ -546,6 +546,7 @@ extern const AVFilter ff_vf_xstack_vaapi;
extern const AVFilter ff_vf_hstack_qsv;
extern const AVFilter ff_vf_vstack_qsv;
extern const AVFilter ff_vf_xstack_qsv;
extern const AVFilter ff_vf_pad_vaapi;
extern const AVFilter ff_vsrc_allrgb;
extern const AVFilter ff_vsrc_allyuv;

283
libavfilter/vf_pad_vaapi.c Normal file
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@ -0,0 +1,283 @@
/*
* 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
*/
#include "libavutil/colorspace.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "internal.h"
#include "vaapi_vpp.h"
#include "video.h"
static const char *const var_names[] = {
"in_w", "iw",
"in_h", "ih",
"out_w", "ow",
"out_h", "oh",
"x",
"y",
"a",
"sar",
"dar",
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_X,
VAR_Y,
VAR_A,
VAR_SAR,
VAR_DAR,
VARS_NB
};
typedef struct PadVAAPIContext {
VAAPIVPPContext vpp_ctx; // must be the first field
VARectangle rect;
char *w_expr;
char *h_expr;
char *x_expr;
char *y_expr;
AVRational aspect;
int w, h;
int x, y;
uint8_t pad_rgba[4];
} PadVAAPIContext;
static int pad_vaapi_config_output(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
AVFilterLink *inlink = avctx->inputs[0];
PadVAAPIContext *ctx = avctx->priv;
VAAPIVPPContext *vpp_ctx = avctx->priv;
AVRational adjusted_aspect = ctx->aspect;
double var_values[VARS_NB], res;
int err, ret;
char *expr;
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];
av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx);
ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->h_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = res;
if (!ctx->h)
var_values[VAR_OUT_H] = var_values[VAR_OH] = ctx->h = inlink->h;
/* evaluate the width again, as it may depend on the evaluated output height */
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = res;
if (!ctx->w)
var_values[VAR_OUT_W] = var_values[VAR_OW] = ctx->w = inlink->w;
if (adjusted_aspect.num && adjusted_aspect.den) {
adjusted_aspect = av_div_q(adjusted_aspect, inlink->sample_aspect_ratio);
if (ctx->h < av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num)) {
ctx->h = var_values[VAR_OUT_H] = var_values[VAR_OH] = av_rescale(ctx->w, adjusted_aspect.den, adjusted_aspect.num);
} else {
ctx->w = var_values[VAR_OUT_W] = var_values[VAR_OW] = av_rescale(ctx->h, adjusted_aspect.num, adjusted_aspect.den);
}
}
/* evaluate x and y */
av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx);
ctx->x = var_values[VAR_X] = res;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->y_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
ctx->y = var_values[VAR_Y] = res;
/* evaluate x again, as it may depend on the evaluated y value */
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0)
return ret;
ctx->x = var_values[VAR_X] = res;
if (ctx->x < 0 || ctx->x + inlink->w > ctx->w)
ctx->x = var_values[VAR_X] = (ctx->w - inlink->w) / 2;
if (ctx->y < 0 || ctx->y + inlink->h > ctx->h)
ctx->y = var_values[VAR_Y] = (ctx->h - inlink->h) / 2;
/* sanity check params */
if (ctx->w < inlink->w || ctx->h < inlink->h) {
av_log(ctx, AV_LOG_ERROR, "Padded dimensions cannot be smaller than input dimensions.\n");
return AVERROR(EINVAL);
}
if (ctx->w > avctx->inputs[0]->w) {
vpp_ctx->output_width = ctx->w;
} else {
vpp_ctx->output_width = avctx->inputs[0]->w;
}
if (ctx->h > avctx->inputs[0]->h) {
vpp_ctx->output_height = ctx->h;
} else {
vpp_ctx->output_height = avctx->inputs[0]->h;
}
if (ctx->x + avctx->inputs[0]->w > vpp_ctx->output_width ||
ctx->y + avctx->inputs[0]->h > vpp_ctx->output_height) {
return AVERROR(EINVAL);
}
err = ff_vaapi_vpp_config_output(outlink);
if (err < 0)
return err;
return 0;
}
static int pad_vaapi_filter_frame(AVFilterLink *link, AVFrame *input_frame)
{
AVFilterContext *avctx = link->dst;
AVFilterLink *outlink = avctx->outputs[0];
VAAPIVPPContext *vpp_ctx = avctx->priv;
PadVAAPIContext *pad_ctx = avctx->priv;
AVFrame *output_frame = NULL;
VAProcPipelineParameterBuffer params;
int err;
if (!input_frame->hw_frames_ctx ||
vpp_ctx->va_context == VA_INVALID_ID) {
err = AVERROR(EINVAL);
goto fail;
}
output_frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!output_frame) {
err = AVERROR(ENOMEM);
goto fail;
}
err = av_frame_copy_props(output_frame, input_frame);
if (err < 0)
goto fail;
err = ff_vaapi_vpp_init_params(avctx, &params,
input_frame, output_frame);
if (err < 0)
goto fail;
pad_ctx->rect.x = pad_ctx->x;
pad_ctx->rect.y = pad_ctx->y;
pad_ctx->rect.width = link->w;
pad_ctx->rect.height = link->h;
params.output_region = &pad_ctx->rect;
params.output_background_color = (pad_ctx->pad_rgba[3] << 24 |
pad_ctx->pad_rgba[0] << 16 |
pad_ctx->pad_rgba[1] << 8 |
pad_ctx->pad_rgba[2]);
err = ff_vaapi_vpp_render_picture(avctx, &params, output_frame);
if (err < 0)
goto fail;
av_frame_free(&input_frame);
return ff_filter_frame(outlink, output_frame);
fail:
av_frame_free(&input_frame);
av_frame_free(&output_frame);
return err;
}
static av_cold int pad_vaapi_init(AVFilterContext *avctx)
{
VAAPIVPPContext *vpp_ctx = avctx->priv;
ff_vaapi_vpp_ctx_init(avctx);
vpp_ctx->pipeline_uninit = ff_vaapi_vpp_pipeline_uninit;
vpp_ctx->output_format = AV_PIX_FMT_NONE;
return 0;
}
#define OFFSET(x) offsetof(PadVAAPIContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption pad_vaapi_options[] = {
{ "width", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
{ "w", "set the pad area width", OFFSET(w_expr), AV_OPT_TYPE_STRING, {.str = "iw"}, 0, 0, FLAGS },
{ "height", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
{ "h", "set the pad area height", OFFSET(h_expr), AV_OPT_TYPE_STRING, {.str = "ih"}, 0, 0, FLAGS },
{ "x", "set the x offset for the input image position", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
{ "y", "set the y offset for the input image position", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, INT16_MAX, FLAGS },
{ "color", "set the color of the padded area border", OFFSET(pad_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS },
{ "aspect", "pad to fit an aspect instead of a resolution", OFFSET(aspect), AV_OPT_TYPE_RATIONAL, {.dbl = 0}, 0, INT16_MAX, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(pad_vaapi);
static const AVFilterPad pad_vaapi_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = pad_vaapi_filter_frame,
.config_props = &ff_vaapi_vpp_config_input,
},
};
static const AVFilterPad pad_vaapi_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &pad_vaapi_config_output,
},
};
const AVFilter ff_vf_pad_vaapi = {
.name = "pad_vaapi",
.description = NULL_IF_CONFIG_SMALL("Pad the input video."),
.priv_size = sizeof(PadVAAPIContext),
.priv_class = &pad_vaapi_class,
.init = &pad_vaapi_init,
.uninit = &ff_vaapi_vpp_ctx_uninit,
FILTER_INPUTS(pad_vaapi_inputs),
FILTER_OUTPUTS(pad_vaapi_outputs),
FILTER_QUERY_FUNC(&ff_vaapi_vpp_query_formats),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};