avfilter: add pad opencl filter
This commit is contained in:
Paul B Mahol
parent
6d37ca8a4e
commit
1c6a91990d
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@ -35,6 +35,7 @@ version <next>:
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- xfade video filter
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- xfade_opencl filter
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- afirsrc audio filter source
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- pad_opencl filter
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version 4.2:
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@ -3535,6 +3535,7 @@ overlay_qsv_filter_deps="libmfx"
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overlay_qsv_filter_select="qsvvpp"
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overlay_vulkan_filter_deps="vulkan libglslang"
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owdenoise_filter_deps="gpl"
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pad_opencl_filter_deps="opencl"
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pan_filter_deps="swresample"
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perspective_filter_deps="gpl"
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phase_filter_deps="gpl"
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@ -21172,6 +21172,83 @@ The inputs have same memory layout for color channels , the overlay has addition
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@end itemize
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@section pad_opencl
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Add paddings to the input image, and place the original input at the
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provided @var{x}, @var{y} coordinates.
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It accepts the following options:
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@table @option
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@item width, w
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@item height, h
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Specify an expression for the size of the output image with the
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paddings added. If the value for @var{width} or @var{height} is 0, the
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corresponding input size is used for the output.
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The @var{width} expression can reference the value set by the
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@var{height} expression, and vice versa.
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The default value of @var{width} and @var{height} is 0.
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@item x
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@item y
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Specify the offsets to place the input image at within the padded area,
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with respect to the top/left border of the output image.
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The @var{x} expression can reference the value set by the @var{y}
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expression, and vice versa.
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The default value of @var{x} and @var{y} is 0.
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If @var{x} or @var{y} evaluate to a negative number, they'll be changed
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so the input image is centered on the padded area.
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@item color
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Specify the color of the padded area. For the syntax of this option,
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check the @ref{color syntax,,"Color" section in the ffmpeg-utils
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manual,ffmpeg-utils}.
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@item aspect
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Pad to an aspect instead to a resolution.
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@end table
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The value for the @var{width}, @var{height}, @var{x}, and @var{y}
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options are expressions containing the following constants:
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@table @option
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@item in_w
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@item in_h
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The input video width and height.
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@item iw
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@item ih
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These are the same as @var{in_w} and @var{in_h}.
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@item out_w
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@item out_h
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The output width and height (the size of the padded area), as
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specified by the @var{width} and @var{height} expressions.
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@item ow
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@item oh
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These are the same as @var{out_w} and @var{out_h}.
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@item x
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@item y
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The x and y offsets as specified by the @var{x} and @var{y}
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expressions, or NAN if not yet specified.
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@item a
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same as @var{iw} / @var{ih}
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@item sar
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input sample aspect ratio
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@item dar
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input display aspect ratio, it is the same as (@var{iw} / @var{ih}) * @var{sar}
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@end table
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@section prewitt_opencl
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Apply the Prewitt operator (@url{https://en.wikipedia.org/wiki/Prewitt_operator}) to input video stream.
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@ -329,6 +329,7 @@ OBJS-$(CONFIG_OVERLAY_QSV_FILTER) += vf_overlay_qsv.o framesync.o
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OBJS-$(CONFIG_OVERLAY_VULKAN_FILTER) += vf_overlay_vulkan.o vulkan.o
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OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o
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OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o
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OBJS-$(CONFIG_PAD_OPENCL_FILTER) += vf_pad_opencl.o opencl.o opencl/pad.o
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OBJS-$(CONFIG_PALETTEGEN_FILTER) += vf_palettegen.o
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OBJS-$(CONFIG_PALETTEUSE_FILTER) += vf_paletteuse.o framesync.o
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OBJS-$(CONFIG_PERMS_FILTER) += f_perms.o
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@ -313,6 +313,7 @@ extern AVFilter ff_vf_overlay_qsv;
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extern AVFilter ff_vf_overlay_vulkan;
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extern AVFilter ff_vf_owdenoise;
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extern AVFilter ff_vf_pad;
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extern AVFilter ff_vf_pad_opencl;
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extern AVFilter ff_vf_palettegen;
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extern AVFilter ff_vf_paletteuse;
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extern AVFilter ff_vf_perms;
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@ -0,0 +1,36 @@
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/*
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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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const sampler_t sampler = CLK_NORMALIZED_COORDS_FALSE |
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CLK_FILTER_NEAREST;
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__kernel void pad (
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__read_only image2d_t src,
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__write_only image2d_t dst,
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float4 color,
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int2 xy)
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{
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int2 size_src = get_image_dim(src);
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int2 loc = (int2)(get_global_id(0), get_global_id(1));
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int2 src_pos = (int2)(get_global_id(0) - xy.x, get_global_id(1) - xy.y);
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float4 pixel = loc.x >= size_src.x + xy.x ||
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loc.y >= size_src.y + xy.y ||
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loc.x < xy.x ||
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loc.y < xy.y ? color : read_imagef(src, sampler, src_pos);
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write_imagef(dst, loc, pixel);
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}
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@ -27,6 +27,7 @@ extern const char *ff_opencl_source_deshake;
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extern const char *ff_opencl_source_neighbor;
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extern const char *ff_opencl_source_nlmeans;
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extern const char *ff_opencl_source_overlay;
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extern const char *ff_opencl_source_pad;
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extern const char *ff_opencl_source_tonemap;
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extern const char *ff_opencl_source_transpose;
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extern const char *ff_opencl_source_unsharp;
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@ -30,7 +30,7 @@
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#include "libavutil/version.h"
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#define LIBAVFILTER_VERSION_MAJOR 7
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#define LIBAVFILTER_VERSION_MINOR 75
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#define LIBAVFILTER_VERSION_MINOR 76
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#define LIBAVFILTER_VERSION_MICRO 100
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@ -0,0 +1,397 @@
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/*
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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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#include "libavutil/colorspace.h"
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#include "libavutil/eval.h"
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#include "libavutil/opt.h"
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#include "libavutil/imgutils.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "formats.h"
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#include "internal.h"
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#include "opencl.h"
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#include "opencl_source.h"
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#include "video.h"
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static const char *const var_names[] = {
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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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"x",
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"y",
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"a",
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"sar",
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"dar",
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NULL
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};
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enum var_name {
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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_X,
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VAR_Y,
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VAR_A,
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VAR_SAR,
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VAR_DAR,
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VARS_NB
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};
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typedef struct PadOpenCLContext {
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OpenCLFilterContext ocf;
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int initialized;
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int is_rgb;
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int is_packed;
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int hsub, vsub;
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char *w_expr;
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char *h_expr;
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char *x_expr;
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char *y_expr;
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AVRational aspect;
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cl_command_queue command_queue;
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cl_kernel kernel_pad;
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int w, h;
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int x, y;
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uint8_t pad_rgba[4];
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uint8_t pad_color[4];
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cl_float4 pad_color_float;
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cl_int2 pad_pos;
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} PadOpenCLContext;
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static int pad_opencl_init(AVFilterContext *avctx, AVFrame *input_frame)
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{
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PadOpenCLContext *ctx = avctx->priv;
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AVHWFramesContext *input_frames_ctx = (AVHWFramesContext *)input_frame->hw_frames_ctx->data;
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const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(input_frames_ctx->sw_format);
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uint8_t rgba_map[4];
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cl_int cle;
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int err;
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ff_fill_rgba_map(rgba_map, input_frames_ctx->sw_format);
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ctx->is_rgb = !!(desc->flags & AV_PIX_FMT_FLAG_RGB);
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ctx->is_packed = !(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
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ctx->hsub = desc->log2_chroma_w;
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ctx->vsub = desc->log2_chroma_h;
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err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_pad, 1);
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if (err < 0)
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goto fail;
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ctx->command_queue = clCreateCommandQueue(
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ctx->ocf.hwctx->context,
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ctx->ocf.hwctx->device_id,
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0,
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&cle
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);
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if (ctx->is_rgb) {
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ctx->pad_color[rgba_map[0]] = ctx->pad_rgba[0];
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ctx->pad_color[rgba_map[1]] = ctx->pad_rgba[1];
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ctx->pad_color[rgba_map[2]] = ctx->pad_rgba[2];
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ctx->pad_color[rgba_map[3]] = ctx->pad_rgba[3];
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} else {
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ctx->pad_color[0] = RGB_TO_Y_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2]);
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ctx->pad_color[1] = RGB_TO_U_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
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ctx->pad_color[2] = RGB_TO_V_BT709(ctx->pad_rgba[0], ctx->pad_rgba[1], ctx->pad_rgba[2], 0);
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ctx->pad_color[3] = ctx->pad_rgba[3];
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}
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create OpenCL command queue %d.\n", cle);
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ctx->kernel_pad = clCreateKernel(ctx->ocf.program, "pad", &cle);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to create pad kernel: %d.\n", cle);
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for (int i = 0; i < 4; ++i) {
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ctx->pad_color_float.s[i] = (float)ctx->pad_color[i] / 255.0;
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}
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ctx->pad_pos.s[0] = ctx->x;
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ctx->pad_pos.s[1] = ctx->y;
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ctx->initialized = 1;
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return 0;
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fail:
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if (ctx->command_queue)
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clReleaseCommandQueue(ctx->command_queue);
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if (ctx->kernel_pad)
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clReleaseKernel(ctx->kernel_pad);
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return err;
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}
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static int filter_frame(AVFilterLink *link, AVFrame *input_frame)
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{
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AVFilterContext *avctx = link->dst;
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AVFilterLink *outlink = avctx->outputs[0];
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PadOpenCLContext *pad_ctx = avctx->priv;
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AVFrame *output_frame = NULL;
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int err;
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cl_int cle;
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size_t global_work[2];
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cl_mem src, dst;
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if (!input_frame->hw_frames_ctx)
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return AVERROR(EINVAL);
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if (!pad_ctx->initialized) {
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err = pad_opencl_init(avctx, input_frame);
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if (err < 0)
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goto fail;
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}
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output_frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
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if (!output_frame) {
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err = AVERROR(ENOMEM);
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goto fail;
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}
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for (int p = 0; p < FF_ARRAY_ELEMS(output_frame->data); p++) {
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cl_float4 pad_color_float;
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cl_int2 pad_pos;
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if (pad_ctx->is_packed) {
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pad_color_float = pad_ctx->pad_color_float;
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} else {
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pad_color_float.s[0] = pad_ctx->pad_color_float.s[p];
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pad_color_float.s[1] = pad_ctx->pad_color_float.s[2];
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}
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if (p > 0 && p < 3) {
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pad_pos.s[0] = pad_ctx->pad_pos.s[0] >> pad_ctx->hsub;
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pad_pos.s[1] = pad_ctx->pad_pos.s[1] >> pad_ctx->vsub;
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} else {
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pad_pos.s[0] = pad_ctx->pad_pos.s[0];
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pad_pos.s[1] = pad_ctx->pad_pos.s[1];
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}
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src = (cl_mem)input_frame->data[p];
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dst = (cl_mem)output_frame->data[p];
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if (!dst)
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break;
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CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 0, cl_mem, &src);
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CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 1, cl_mem, &dst);
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CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 2, cl_float4, &pad_color_float);
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CL_SET_KERNEL_ARG(pad_ctx->kernel_pad, 3, cl_int2, &pad_pos);
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err = ff_opencl_filter_work_size_from_image(avctx, global_work, output_frame, p, 16);
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if (err < 0)
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goto fail;
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cle = clEnqueueNDRangeKernel(pad_ctx->command_queue, pad_ctx->kernel_pad, 2, NULL,
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global_work, NULL, 0, NULL, NULL);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to enqueue pad kernel: %d.\n", cle);
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}
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// Run queued kernel
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cle = clFinish(pad_ctx->command_queue);
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CL_FAIL_ON_ERROR(AVERROR(EIO), "Failed to finish command queue: %d.\n", cle);
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err = av_frame_copy_props(output_frame, input_frame);
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if (err < 0)
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goto fail;
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av_frame_free(&input_frame);
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return ff_filter_frame(outlink, output_frame);
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fail:
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clFinish(pad_ctx->command_queue);
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av_frame_free(&input_frame);
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av_frame_free(&output_frame);
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return err;
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}
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static av_cold void pad_opencl_uninit(AVFilterContext *avctx)
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{
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PadOpenCLContext *ctx = avctx->priv;
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cl_int cle;
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if (ctx->kernel_pad) {
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cle = clReleaseKernel(ctx->kernel_pad);
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if (cle != CL_SUCCESS)
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av_log(avctx, AV_LOG_ERROR, "Failed to release "
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"kernel: %d.\n", cle);
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}
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if (ctx->command_queue) {
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cle = clReleaseCommandQueue(ctx->command_queue);
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if (cle != CL_SUCCESS)
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av_log(avctx, AV_LOG_ERROR, "Failed to release "
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"command queue: %d.\n", cle);
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}
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ff_opencl_filter_uninit(avctx);
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}
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static int pad_opencl_config_output(AVFilterLink *outlink)
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{
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AVFilterContext *avctx = outlink->src;
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AVFilterLink *inlink = avctx->inputs[0];
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PadOpenCLContext *ctx = avctx->priv;
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AVRational adjusted_aspect = ctx->aspect;
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double var_values[VARS_NB], res;
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int err, ret;
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char *expr;
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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 ?
|
||||
(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) {
|
||||
ctx->ocf.output_width = ctx->w;
|
||||
} else {
|
||||
ctx->ocf.output_width = avctx->inputs[0]->w;
|
||||
}
|
||||
|
||||
if (ctx->h > avctx->inputs[0]->h) {
|
||||
ctx->ocf.output_height = ctx->h;
|
||||
} else {
|
||||
ctx->ocf.output_height = avctx->inputs[0]->h;
|
||||
}
|
||||
|
||||
if (ctx->x + avctx->inputs[0]->w > ctx->ocf.output_width ||
|
||||
ctx->y + avctx->inputs[0]->h > ctx->ocf.output_height) {
|
||||
return AVERROR(EINVAL);
|
||||
}
|
||||
|
||||
err = ff_opencl_filter_config_output(outlink);
|
||||
if (err < 0)
|
||||
return err;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static const AVFilterPad pad_opencl_inputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.filter_frame = filter_frame,
|
||||
.config_props = &ff_opencl_filter_config_input,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
static const AVFilterPad pad_opencl_outputs[] = {
|
||||
{
|
||||
.name = "default",
|
||||
.type = AVMEDIA_TYPE_VIDEO,
|
||||
.config_props = &pad_opencl_config_output,
|
||||
},
|
||||
{ NULL }
|
||||
};
|
||||
|
||||
#define OFFSET(x) offsetof(PadOpenCLContext, x)
|
||||
#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
|
||||
|
||||
static const AVOption pad_opencl_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_opencl);
|
||||
|
||||
AVFilter ff_vf_pad_opencl = {
|
||||
.name = "pad_opencl",
|
||||
.description = NULL_IF_CONFIG_SMALL("Pad the input video."),
|
||||
.priv_size = sizeof(PadOpenCLContext),
|
||||
.priv_class = &pad_opencl_class,
|
||||
.init = &ff_opencl_filter_init,
|
||||
.uninit = &pad_opencl_uninit,
|
||||
.query_formats = &ff_opencl_filter_query_formats,
|
||||
.inputs = pad_opencl_inputs,
|
||||
.outputs = pad_opencl_outputs,
|
||||
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE
|
||||
};
|
||||
Loading…
Reference in New Issue