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lavfi: Add drawbox_vaapi filter 

Signed-off-by: Haihao Xiang <haihao.xiang@intel.com>
This commit is contained in:
Haihao Xiang 2024-03-18 14:06:15 +08:00
parent 42eb10ecc6
commit 5c55e4e297
5 changed files with 457 additions and 0 deletions
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1
configure vendored
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@ -3957,6 +3957,7 @@ vstack_qsv_filter_select="qsvvpp"
xstack_qsv_filter_deps="libmfx"
xstack_qsv_filter_select="qsvvpp"
pad_vaapi_filter_deps="vaapi_1"
drawbox_vaapi_filter_deps="vaapi_1"
# examples
avio_http_serve_files_deps="avformat avutil fork"

85
doc/filters.texi
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@ -28032,6 +28032,91 @@ input sample aspect ratio
input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
@end table
@section drawbox_vaapi
Draw a colored box on the input image.
It accepts the following parameters:
@table @option
@item x
@item y
The expressions which specify the top left corner coordinates of the box. It defaults to 0.
@item width, w
@item height, h
The expressions which specify the width and height of the box; if 0 they are interpreted as
the input width and height. It defaults to 0.
@item color, c
Specify the color of the box to write. For the general syntax of this option,
check the @ref{color syntax,,"Color" section in the ffmpeg-utils manual,ffmpeg-utils}.
@item thickness, t
The expression which sets the thickness of the box edge.
A value of @code{fill} will create a filled box. Default value is @code{3}.
See below for the list of accepted constants.
@item replace
With value @code{1}, the pixels of the painted box will overwrite the video's color and alpha pixels.
Default is @code{0}, which composites the box onto the input video.
@end table
The parameters for @var{x}, @var{y}, @var{w} and @var{h} and @var{t} are expressions containing the
following constants:
@table @option
@item in_h, ih
@item in_w, iw
The input width and height.
@item x
@item y
The x and y offset coordinates where the box is drawn.
@item w
@item h
The width and height of the drawn box.
@item t
The thickness of the drawn box.
@end table
@subsection Examples
@itemize
@item
Draw a black box around the edge of the input image:
@example
drawbox
@end example
@item
Draw a box with color red and an opacity of 50%:
@example
drawbox=10:20:200:60:red@@0.5
@end example
The previous example can be specified as:
@example
drawbox=x=10:y=20:w=200:h=60:color=red@@0.5
@end example
@item
Fill the box with pink color:
@example
drawbox=x=10:y=10:w=100:h=100:color=pink@@0.5:t=fill
@end example
@item
Draw a 2-pixel red 2.40:1 mask:
@example
drawbox=x=-t:y=0.5*(ih-iw/2.4)-t:w=iw+t*2:h=iw/2.4+t*2:t=2:c=red
@end example
@end itemize
@c man end VAAPI VIDEO FILTERS
@chapter Vulkan Video Filters

1
libavfilter/Makefile
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@ -582,6 +582,7 @@ 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-$(CONFIG_DRAWBOX_VAAPI_FILTER) += vf_drawbox_vaapi.o vaapi_vpp.o
OBJS-$(CONFIG_ALLRGB_FILTER) += vsrc_testsrc.o
OBJS-$(CONFIG_ALLYUV_FILTER) += vsrc_testsrc.o

1
libavfilter/allfilters.c
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@ -547,6 +547,7 @@ 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_vf_drawbox_vaapi;
extern const AVFilter ff_vsrc_allrgb;
extern const AVFilter ff_vsrc_allyuv;

369
libavfilter/vf_drawbox_vaapi.c Normal file
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@ -0,0 +1,369 @@
/*
* 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_h", "ih",
"in_w", "iw",
"x",
"y",
"h",
"w",
"t",
"fill",
NULL
};
enum var_name {
VAR_IN_H, VAR_IH,
VAR_IN_W, VAR_IW,
VAR_X,
VAR_Y,
VAR_H,
VAR_W,
VAR_T,
VAR_MAX,
VARS_NB
};
static const int NUM_EXPR_EVALS = 5;
typedef struct DrawboxVAAPIContext {
VAAPIVPPContext vpp_ctx; // must be the first field
VARectangle outer_rect, inner_rect;
/* The hardware frame context containing the frames for outer_rect. */
AVBufferRef *outer_frames_ref;
AVHWFramesContext *outer_frames;
AVFrame *outer_frame;
char *x_expr;
char *y_expr;
char *w_expr;
char *h_expr;
char *t_expr;
int w, h;
int x, y;
int replace;
uint32_t thickness;
uint8_t drawbox_rgba[4];
int fill;
} DrawboxVAAPIContext;
static int drawbox_vaapi_config_output(AVFilterLink *outlink)
{
AVFilterContext *avctx = outlink->src;
AVFilterLink *inlink = avctx->inputs[0];
DrawboxVAAPIContext *ctx = avctx->priv;
VAAPIVPPContext *vpp_ctx = avctx->priv;
double var_values[VARS_NB], res;
int ret, i;
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_X] = NAN;
var_values[VAR_Y] = NAN;
var_values[VAR_H] = NAN;
var_values[VAR_W] = NAN;
var_values[VAR_T] = NAN;
for (i = 0; i <= NUM_EXPR_EVALS; i++) {
/* evaluate expressions, fail on last iteration */
var_values[VAR_MAX] = inlink->w;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->x_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0 && i == NUM_EXPR_EVALS)
goto fail;
ctx->x = var_values[VAR_X] = res;
var_values[VAR_MAX] = inlink->h;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->y_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0 && i == NUM_EXPR_EVALS)
goto fail;
ctx->y = var_values[VAR_Y] = res;
var_values[VAR_MAX] = inlink->w - ctx->x;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->w_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0 && i == NUM_EXPR_EVALS)
goto fail;
ctx->w = var_values[VAR_W] = res;
var_values[VAR_MAX] = inlink->h - ctx->y;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->h_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0 && i == NUM_EXPR_EVALS)
goto fail;
ctx->h = var_values[VAR_H] = res;
var_values[VAR_MAX] = INT_MAX;
if ((ret = av_expr_parse_and_eval(&res, (expr = ctx->t_expr),
var_names, var_values,
NULL, NULL, NULL, NULL, NULL, 0, ctx)) < 0 && i == NUM_EXPR_EVALS)
goto fail;
ctx->thickness = var_values[VAR_T] = res;
}
/* Sanity check */
ctx->w = (ctx->w > 0) ? ctx->w : inlink->w;
ctx->h = (ctx->h > 0) ? ctx->h : inlink->h;
if (ctx->x + ctx->w > inlink->w)
ctx->w = inlink->w - ctx->x;
if (ctx->y + ctx->h > inlink->h)
ctx->h = inlink->h - ctx->y;
ctx->outer_rect.x = ctx->x;
ctx->outer_rect.y = ctx->y;
ctx->outer_rect.width = ctx->w;
ctx->outer_rect.height = ctx->h;
if (ctx->outer_rect.width <= ctx->thickness * 2 ||
ctx->outer_rect.height <= ctx->thickness * 2) {
ctx->fill = 1;
} else {
ctx->fill = 0;
ctx->inner_rect.x = ctx->outer_rect.x + ctx->thickness;
ctx->inner_rect.y = ctx->outer_rect.y + ctx->thickness;
ctx->inner_rect.width = ctx->outer_rect.width - ctx->thickness * 2;
ctx->inner_rect.height = ctx->outer_rect.height - ctx->thickness * 2;
}
vpp_ctx->output_width = inlink->w;
vpp_ctx->output_height = inlink->h;
ret = ff_vaapi_vpp_config_output(outlink);
if (ret < 0)
return ret;
ctx->outer_frames_ref = av_hwframe_ctx_alloc(vpp_ctx->device_ref);
if (!ctx->outer_frames_ref) {
return AVERROR(ENOMEM);
}
ctx->outer_frames = (AVHWFramesContext*)ctx->outer_frames_ref->data;
ctx->outer_frames->format = AV_PIX_FMT_VAAPI;
ctx->outer_frames->sw_format = vpp_ctx->input_frames->sw_format;
ctx->outer_frames->width = ctx->outer_rect.width;
ctx->outer_frames->height = ctx->outer_rect.height;
return av_hwframe_ctx_init(ctx->outer_frames_ref);
fail:
av_log(avctx, AV_LOG_ERROR,
"Error when evaluating the expression '%s'.\n",
expr);
return ret;
}
static int drawbox_vaapi_filter_frame(AVFilterLink *link, AVFrame *input_frame)
{
AVFilterContext *avctx = link->dst;
AVFilterLink *outlink = avctx->outputs[0];
VAAPIVPPContext *vpp_ctx = avctx->priv;
DrawboxVAAPIContext *drawbox_ctx = avctx->priv;
AVFrame *output_frame = NULL;
VAProcPipelineParameterBuffer box_params;
VAProcPipelineParameterBuffer params[3];
VABlendState blend_state = {
.flags = VA_BLEND_GLOBAL_ALPHA,
};
VARectangle box[4];
int err, nb_params = 0;
if (!input_frame->hw_frames_ctx ||
vpp_ctx->va_context == VA_INVALID_ID) {
err = AVERROR(EINVAL);
goto fail;
}
if (!drawbox_ctx->outer_frame) {
drawbox_ctx->outer_frame = av_frame_alloc();
if (!drawbox_ctx->outer_frame) {
err = AVERROR(ENOMEM);
goto fail;
}
err = av_hwframe_get_buffer(drawbox_ctx->outer_frames_ref, drawbox_ctx->outer_frame, 0);
if (err < 0) {
err = AVERROR(ENOMEM);
goto fail;
}
/* Create image for the outer rect */
err = ff_vaapi_vpp_init_params(avctx, &box_params,
input_frame, drawbox_ctx->outer_frame);
if (err < 0)
goto fail;
blend_state.global_alpha = 0.0f;
box_params.surface_region = &drawbox_ctx->outer_rect;
box_params.blend_state = &blend_state;
box_params.output_background_color = (drawbox_ctx->drawbox_rgba[3] << 24 |
drawbox_ctx->drawbox_rgba[0] << 16 |
drawbox_ctx->drawbox_rgba[1] << 8 |
drawbox_ctx->drawbox_rgba[2]);
err = ff_vaapi_vpp_render_picture(avctx, &box_params, drawbox_ctx->outer_frame);
if (err < 0)
goto fail;
}
/* Draw outer & inner rects on the input video, then we can get a box*/
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[nb_params],
input_frame, output_frame);
if (err < 0)
goto fail;
box[0].x = 0;
box[0].y = 0;
box[0].width = link->w;
box[0].height = link->h;
params[nb_params].surface_region = &box[0];
params[nb_params].output_background_color = 0;
nb_params++;
err = ff_vaapi_vpp_init_params(avctx, &params[nb_params],
drawbox_ctx->outer_frame, output_frame);
if (err < 0)
goto fail;
box[1] = drawbox_ctx->outer_rect;
if (drawbox_ctx->drawbox_rgba[3] != 255 && !drawbox_ctx->replace) {
blend_state.global_alpha = (float)drawbox_ctx->drawbox_rgba[3] / 255;
params[nb_params].blend_state = &blend_state;
}
params[nb_params].output_region = &box[1];
params[nb_params].output_background_color = 0;
nb_params++;
if (!drawbox_ctx->fill) {
box[3] = box[2] = drawbox_ctx->inner_rect;
params[nb_params] = params[0];
params[nb_params].surface_region = &box[2];
params[nb_params].output_region = &box[3];
params[nb_params].output_background_color = 0;
nb_params++;
}
err = ff_vaapi_vpp_render_pictures(avctx, params, nb_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 drawbox_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;
}
static av_cold void drawbox_vaapi_uninit(AVFilterContext *avctx)
{
DrawboxVAAPIContext *ctx = avctx->priv;
av_frame_free(&ctx->outer_frame);
av_buffer_unref(&ctx->outer_frames_ref);
ff_vaapi_vpp_ctx_uninit(avctx);
}
#define OFFSET(x) offsetof(DrawboxVAAPIContext, x)
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
static const AVOption drawbox_vaapi_options[] = {
{ "x", "set horizontal position of the left box edge", OFFSET(x_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "y", "set vertical position of the top box edge", OFFSET(y_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "width", "set width of the box", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "w", "set width of the box", OFFSET(w_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "height", "set height of the box", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "h", "set height of the box", OFFSET(h_expr), AV_OPT_TYPE_STRING, { .str="0" }, 0, 0, FLAGS },
{ "color", "set color of the box", OFFSET(drawbox_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS },
{ "c", "set color of the box", OFFSET(drawbox_rgba), AV_OPT_TYPE_COLOR, { .str = "black" }, 0, 0, FLAGS },
{ "thickness", "set the box thickness", OFFSET(t_expr), AV_OPT_TYPE_STRING, { .str="3" }, 0, 0, FLAGS },
{ "t", "set the box thickness", OFFSET(t_expr), AV_OPT_TYPE_STRING, { .str="3" }, 0, 0, FLAGS },
{ "replace", "replace color", OFFSET(replace), AV_OPT_TYPE_BOOL, { .i64=0 }, 0, 1, FLAGS },
{ NULL }
};
AVFILTER_DEFINE_CLASS(drawbox_vaapi);
static const AVFilterPad drawbox_vaapi_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = drawbox_vaapi_filter_frame,
.config_props = &ff_vaapi_vpp_config_input,
},
};
static const AVFilterPad drawbox_vaapi_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = &drawbox_vaapi_config_output,
},
};
const AVFilter ff_vf_drawbox_vaapi = {
.name = "drawbox_vaapi",
.description = NULL_IF_CONFIG_SMALL("Draw a colored box on the input video."),
.priv_size = sizeof(DrawboxVAAPIContext),
.priv_class = &drawbox_vaapi_class,
.init = &drawbox_vaapi_init,
.uninit = &drawbox_vaapi_uninit,
FILTER_INPUTS(drawbox_vaapi_inputs),
FILTER_OUTPUTS(drawbox_vaapi_outputs),
FILTER_QUERY_FUNC(&ff_vaapi_vpp_query_formats),
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};