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lavfi: Add boxblur_opencl filter 

Behaves like existing boxblur filter.
tags/n4.1
Danil Iashchenko Mark Thompson 7 years ago
parent
e8050aa791
commit
714da1fd89
7 changed files with 373 additions and 209 deletions
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  1. +1
    -0
      configure
  2. +4
    -2
      libavfilter/Makefile
  3. +1
    -0
      libavfilter/allfilters.c
  4. +127
    -0
      libavfilter/boxblur.c
  5. +48
    -0
      libavfilter/boxblur.h
  6. +182
    -101
      libavfilter/vf_avgblur_opencl.c
  7. +10
    -106
      libavfilter/vf_boxblur.c

+ 1
- 0
configure View File

@@ -3311,6 +3311,7 @@ avgblur_opencl_filter_deps="opencl"
azmq_filter_deps="libzmq"
blackframe_filter_deps="gpl"
boxblur_filter_deps="gpl"
boxblur_opencl_filter_deps="opencl gpl"
bs2b_filter_deps="libbs2b"
colormatrix_filter_deps="gpl"
convolution_opencl_filter_deps="opencl"


+ 4
- 2
libavfilter/Makefile View File

@@ -149,14 +149,16 @@ OBJS-$(CONFIG_ASS_FILTER) += vf_subtitles.o
OBJS-$(CONFIG_ATADENOISE_FILTER) += vf_atadenoise.o
OBJS-$(CONFIG_AVGBLUR_FILTER) += vf_avgblur.o
OBJS-$(CONFIG_AVGBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
opencl/avgblur.o
opencl/avgblur.o boxblur.o
OBJS-$(CONFIG_BBOX_FILTER) += bbox.o vf_bbox.o
OBJS-$(CONFIG_BENCH_FILTER) += f_bench.o
OBJS-$(CONFIG_BITPLANENOISE_FILTER) += vf_bitplanenoise.o
OBJS-$(CONFIG_BLACKDETECT_FILTER) += vf_blackdetect.o
OBJS-$(CONFIG_BLACKFRAME_FILTER) += vf_blackframe.o
OBJS-$(CONFIG_BLEND_FILTER) += vf_blend.o framesync.o
OBJS-$(CONFIG_BOXBLUR_FILTER) += vf_boxblur.o
OBJS-$(CONFIG_BOXBLUR_FILTER) += vf_boxblur.o boxblur.o
OBJS-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_avgblur_opencl.o opencl.o \
opencl/avgblur.o boxblur.o
OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o
OBJS-$(CONFIG_CHROMAKEY_FILTER) += vf_chromakey.o
OBJS-$(CONFIG_CIESCOPE_FILTER) += vf_ciescope.o


+ 1
- 0
libavfilter/allfilters.c View File

@@ -148,6 +148,7 @@ extern AVFilter ff_vf_blackdetect;
extern AVFilter ff_vf_blackframe;
extern AVFilter ff_vf_blend;
extern AVFilter ff_vf_boxblur;
extern AVFilter ff_vf_boxblur_opencl;
extern AVFilter ff_vf_bwdif;
extern AVFilter ff_vf_chromakey;
extern AVFilter ff_vf_ciescope;


+ 127
- 0
libavfilter/boxblur.c View File

@@ -0,0 +1,127 @@
/*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2018 Danil Iashchenko
*
* 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 "boxblur.h"

static const char *const var_names[] = {
"w",
"h",
"cw",
"ch",
"hsub",
"vsub",
NULL
};

enum var_name {
VAR_W,
VAR_H,
VAR_CW,
VAR_CH,
VAR_HSUB,
VAR_VSUB,
VARS_NB
};


int ff_boxblur_eval_filter_params(AVFilterLink *inlink,
FilterParam *luma_param,
FilterParam *chroma_param,
FilterParam *alpha_param)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
AVFilterContext *ctx = inlink->dst;
int w = inlink->w, h = inlink->h;
int cw, ch;
double var_values[VARS_NB], res;
char *expr;
int ret;

if (!luma_param->radius_expr) {
av_log(ctx, AV_LOG_ERROR, "Luma radius expression is not set.\n");
return AVERROR(EINVAL);
}

/* fill missing params */
if (!chroma_param->radius_expr) {
chroma_param->radius_expr = av_strdup(luma_param->radius_expr);
if (!chroma_param->radius_expr)
return AVERROR(ENOMEM);
}
if (chroma_param->power < 0)
chroma_param->power = luma_param->power;

if (!alpha_param->radius_expr) {
alpha_param->radius_expr = av_strdup(luma_param->radius_expr);
if (!alpha_param->radius_expr)
return AVERROR(ENOMEM);
}
if (alpha_param->power < 0)
alpha_param->power = luma_param->power;

var_values[VAR_W] = inlink->w;
var_values[VAR_H] = inlink->h;
var_values[VAR_CW] = cw = w>>(desc->log2_chroma_w);
var_values[VAR_CH] = ch = h>>(desc->log2_chroma_h);
var_values[VAR_HSUB] = 1<<(desc->log2_chroma_w);
var_values[VAR_VSUB] = 1<<(desc->log2_chroma_h);

#define EVAL_RADIUS_EXPR(comp) \
expr = comp->radius_expr; \
ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, \
NULL, NULL, NULL, NULL, NULL, 0, ctx); \
comp->radius = res; \
if (ret < 0) { \
av_log(NULL, AV_LOG_ERROR, \
"Error when evaluating " #comp " radius expression '%s'\n", expr); \
return ret; \
}

EVAL_RADIUS_EXPR(luma_param);
EVAL_RADIUS_EXPR(chroma_param);
EVAL_RADIUS_EXPR(alpha_param);

av_log(ctx, AV_LOG_VERBOSE,
"luma_radius:%d luma_power:%d "
"chroma_radius:%d chroma_power:%d "
"alpha_radius:%d alpha_power:%d "
"w:%d chroma_w:%d h:%d chroma_h:%d\n",
luma_param ->radius, luma_param ->power,
chroma_param->radius, chroma_param->power,
alpha_param ->radius, alpha_param ->power,
w, cw, h, ch);


#define CHECK_RADIUS_VAL(w_, h_, comp) \
if (comp->radius < 0 || \
2*comp->radius > FFMIN(w_, h_)) { \
av_log(ctx, AV_LOG_ERROR, \
"Invalid " #comp " radius value %d, must be >= 0 and <= %d\n", \
comp->radius, FFMIN(w_, h_)/2); \
return AVERROR(EINVAL); \
}
CHECK_RADIUS_VAL(w, h, luma_param);
CHECK_RADIUS_VAL(cw, ch, chroma_param);
CHECK_RADIUS_VAL(w, h, alpha_param);

return 0;
}

+ 48
- 0
libavfilter/boxblur.h View File

@@ -0,0 +1,48 @@
/*
* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
* Copyright (c) 2011 Stefano Sabatini
* Copyright (c) 2018 Danil Iashchenko
*
* 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
*/

#ifndef AVFILTER_BOXBLUR_H
#define AVFILTER_BOXBLUR_H

#include "libavutil/eval.h"
#include "libavutil/pixdesc.h"
#include "libavutil/mem.h"

#include "avfilter.h"

typedef struct FilterParam {
int radius;
int power;
char *radius_expr;
} FilterParam;

#define Y 0
#define U 1
#define V 2
#define A 3

int ff_boxblur_eval_filter_params(AVFilterLink *inlink,
FilterParam *luma_param,
FilterParam *chroma_param,
FilterParam *alpha_param);

#endif // AVFILTER_BOXBLUR_H

+ 182
- 101
libavfilter/vf_avgblur_opencl.c View File

@@ -1,5 +1,6 @@
/*
* Copyright (c) 2018 Dylan Fernando
* Copyright (c) 2018 Danil Iashchenko
*
* This file is part of FFmpeg.
*
@@ -20,16 +21,14 @@

#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"

#include "avfilter.h"
#include "internal.h"
#include "opencl.h"
#include "opencl_source.h"
#include "video.h"
#include "boxblur.h"

typedef struct AverageBlurOpenCLContext {
OpenCLFilterContext ocf;
@@ -39,10 +38,16 @@ typedef struct AverageBlurOpenCLContext {
cl_kernel kernel_vert;
cl_command_queue command_queue;

int radius;
int radiusH;
int radiusV;
int planes;

FilterParam luma_param;
FilterParam chroma_param;
FilterParam alpha_param;
int radius[4];
int power[4];

} AverageBlurOpenCLContext;


@@ -80,10 +85,6 @@ static int avgblur_opencl_init(AVFilterContext *avctx)
goto fail;
}

if (ctx->radiusV <= 0) {
ctx->radiusV = ctx->radius;
}

ctx->initialised = 1;
return 0;

@@ -97,6 +98,60 @@ fail:
return err;
}


static int avgblur_opencl_make_filter_params(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AverageBlurOpenCLContext *s = ctx->priv;
int i;

if (s->radiusV <= 0) {
s->radiusV = s->radiusH;
}

for (i = 0; i < 4; i++) {
s->power[i] = 1;
}
return 0;
}


static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
AverageBlurOpenCLContext *s = ctx->priv;
int err, i;

err = ff_boxblur_eval_filter_params(inlink,
&s->luma_param,
&s->chroma_param,
&s->alpha_param);

if (err != 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to evaluate "
"filter params: %d.\n", err);
return err;
}

s->radius[Y] = s->luma_param.radius;
s->radius[U] = s->radius[V] = s->chroma_param.radius;
s->radius[A] = s->alpha_param.radius;

s->power[Y] = s->luma_param.power;
s->power[U] = s->power[V] = s->chroma_param.power;
s->power[A] = s->alpha_param.power;

for (i = 0; i < 4; i++) {
if (s->power[i] == 0) {
s->power[i] = 1;
s->radius[i] = 0;
}
}

return 0;
}


static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
{
AVFilterContext *avctx = inlink->dst;
@@ -107,7 +162,7 @@ static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
cl_int cle;
size_t global_work[2];
cl_mem src, dst, inter;
int err, p, radius_x, radius_y;
int err, p, radius_x, radius_y, i;

av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
av_get_pix_fmt_name(input->format),
@@ -121,6 +176,16 @@ static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
if (err < 0)
goto fail;

if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
err = avgblur_opencl_make_filter_params(inlink);
if (err < 0)
goto fail;
} else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
err = boxblur_opencl_make_filter_params(inlink);
if (err < 0)
goto fail;
}

}

output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
@@ -128,7 +193,6 @@ static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
err = AVERROR(ENOMEM);
goto fail;
}

intermediate = ff_get_video_buffer(outlink, outlink->w, outlink->h);
if (!intermediate) {
err = AVERROR(ENOMEM);
@@ -137,13 +201,13 @@ static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)

for (p = 0; p < FF_ARRAY_ELEMS(output->data); p++) {
src = (cl_mem) input->data[p];
dst = (cl_mem)output->data[p];
inter = (cl_mem) intermediate->data[p];
dst = (cl_mem) output->data[p];
inter = (cl_mem)intermediate->data[p];

if (!dst)
break;

radius_x = ctx->radius;
radius_x = ctx->radiusH;
radius_y = ctx->radiusV;

if (!(ctx->planes & (1 << p))) {
@@ -151,88 +215,57 @@ static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
radius_y = 0;
}

cle = clSetKernelArg(ctx->kernel_horiz, 0, sizeof(cl_mem), &inter);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"destination image argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}
cle = clSetKernelArg(ctx->kernel_horiz, 1, sizeof(cl_mem), &src);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"source image argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}
cle = clSetKernelArg(ctx->kernel_horiz, 2, sizeof(cl_int), &radius_x);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"sizeX argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}

err = ff_opencl_filter_work_size_from_image(avctx, global_work,
intermediate, p, 0);
if (err < 0)
goto fail;

av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
"(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
p, global_work[0], global_work[1]);

cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_horiz, 2, NULL,
global_work, NULL,
0, NULL, NULL);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
}

cle = clSetKernelArg(ctx->kernel_vert, 0, sizeof(cl_mem), &dst);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"destination image argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}
cle = clSetKernelArg(ctx->kernel_vert, 1, sizeof(cl_mem), &inter);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"source image argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}
cle = clSetKernelArg(ctx->kernel_vert, 2, sizeof(cl_int), &radius_y);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
"sizeY argument: %d.\n", cle);
err = AVERROR_UNKNOWN;
goto fail;
}

err = ff_opencl_filter_work_size_from_image(avctx, global_work,
output, p, 0);
if (err < 0)
goto fail;

av_log(avctx, AV_LOG_DEBUG, "Run kernel on plane %d "
"(%"SIZE_SPECIFIER"x%"SIZE_SPECIFIER").\n",
p, global_work[0], global_work[1]);

cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_vert, 2, NULL,
global_work, NULL,
0, NULL, NULL);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
for (i = 0; i < ctx->power[p]; i++) {
CL_SET_KERNEL_ARG(ctx->kernel_horiz, 0, cl_mem, &inter);
CL_SET_KERNEL_ARG(ctx->kernel_horiz, 1, cl_mem, i == 0 ? &src : &dst);
if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &radius_x);
} else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
CL_SET_KERNEL_ARG(ctx->kernel_horiz, 2, cl_int, &ctx->radius[p]);
}

err = ff_opencl_filter_work_size_from_image(avctx, global_work,
i == 0 ? intermediate : output, p, 0);
if (err < 0)
goto fail;

cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_horiz, 2, NULL,
global_work, NULL,
0, NULL, NULL);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
}
cle = clFinish(ctx->command_queue);

err = ff_opencl_filter_work_size_from_image(avctx, global_work,
i == 0 ? output : intermediate, p, 0);

CL_SET_KERNEL_ARG(ctx->kernel_vert, 0, cl_mem, &dst);
CL_SET_KERNEL_ARG(ctx->kernel_vert, 1, cl_mem, &inter);

if (!strcmp(avctx->filter->name, "avgblur_opencl")) {
CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &radius_y);
} else if (!strcmp(avctx->filter->name, "boxblur_opencl")) {
CL_SET_KERNEL_ARG(ctx->kernel_vert, 2, cl_int, &ctx->radius[p]);
}

cle = clEnqueueNDRangeKernel(ctx->command_queue, ctx->kernel_vert, 2, NULL,
global_work, NULL,
0, NULL, NULL);
if (cle != CL_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed to enqueue kernel: %d.\n",
cle);
err = AVERROR(EIO);
goto fail;
}
}

}

cle = clFinish(ctx->command_queue);
@@ -264,12 +297,12 @@ fail:
return err;
}


static av_cold void avgblur_opencl_uninit(AVFilterContext *avctx)
{
AverageBlurOpenCLContext *ctx = avctx->priv;
cl_int cle;


if (ctx->kernel_horiz) {
cle = clReleaseKernel(ctx->kernel_horiz);
if (cle != CL_SUCCESS)
@@ -294,16 +327,6 @@ static av_cold void avgblur_opencl_uninit(AVFilterContext *avctx)
ff_opencl_filter_uninit(avctx);
}

#define OFFSET(x) offsetof(AverageBlurOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption avgblur_opencl_options[] = {
{ "sizeX", "set horizontal size", OFFSET(radius), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
{ NULL }
};

AVFILTER_DEFINE_CLASS(avgblur_opencl);

static const AVFilterPad avgblur_opencl_inputs[] = {
{
@@ -315,6 +338,7 @@ static const AVFilterPad avgblur_opencl_inputs[] = {
{ NULL }
};


static const AVFilterPad avgblur_opencl_outputs[] = {
{
.name = "default",
@@ -324,6 +348,22 @@ static const AVFilterPad avgblur_opencl_outputs[] = {
{ NULL }
};


#define OFFSET(x) offsetof(AverageBlurOpenCLContext, x)
#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)

#if CONFIG_AVGBLUR_OPENCL_FILTER

static const AVOption avgblur_opencl_options[] = {
{ "sizeX", "set horizontal size", OFFSET(radiusH), AV_OPT_TYPE_INT, {.i64=1}, 1, 1024, FLAGS },
{ "planes", "set planes to filter", OFFSET(planes), AV_OPT_TYPE_INT, {.i64=0xF}, 0, 0xF, FLAGS },
{ "sizeY", "set vertical size", OFFSET(radiusV), AV_OPT_TYPE_INT, {.i64=0}, 0, 1024, FLAGS },
{ NULL }
};

AVFILTER_DEFINE_CLASS(avgblur_opencl);


AVFilter ff_vf_avgblur_opencl = {
.name = "avgblur_opencl",
.description = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
@@ -336,3 +376,44 @@ AVFilter ff_vf_avgblur_opencl = {
.outputs = avgblur_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif /* CONFIG_AVGBLUR_OPENCL_FILTER */


#if CONFIG_BOXBLUR_OPENCL_FILTER

static const AVOption boxblur_opencl_options[] = {
{ "luma_radius", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
{ "lr", "Radius of the luma blurring box", OFFSET(luma_param.radius_expr), AV_OPT_TYPE_STRING, {.str="2"}, .flags = FLAGS },
{ "luma_power", "How many times should the boxblur be applied to luma", OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },
{ "lp", "How many times should the boxblur be applied to luma", OFFSET(luma_param.power), AV_OPT_TYPE_INT, {.i64=2}, 0, INT_MAX, .flags = FLAGS },

{ "chroma_radius", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "cr", "Radius of the chroma blurring box", OFFSET(chroma_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "chroma_power", "How many times should the boxblur be applied to chroma", OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "cp", "How many times should the boxblur be applied to chroma", OFFSET(chroma_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

{ "alpha_radius", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "ar", "Radius of the alpha blurring box", OFFSET(alpha_param.radius_expr), AV_OPT_TYPE_STRING, {.str=NULL}, .flags = FLAGS },
{ "alpha_power", "How many times should the boxblur be applied to alpha", OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },
{ "ap", "How many times should the boxblur be applied to alpha", OFFSET(alpha_param.power), AV_OPT_TYPE_INT, {.i64=-1}, -1, INT_MAX, .flags = FLAGS },

{ NULL }
};

AVFILTER_DEFINE_CLASS(boxblur_opencl);

AVFilter ff_vf_boxblur_opencl = {
.name = "boxblur_opencl",
.description = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input video"),
.priv_size = sizeof(AverageBlurOpenCLContext),
.priv_class = &boxblur_opencl_class,
.init = &ff_opencl_filter_init,
.uninit = &avgblur_opencl_uninit,
.query_formats = &ff_opencl_filter_query_formats,
.inputs = avgblur_opencl_inputs,
.outputs = avgblur_opencl_outputs,
.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
};

#endif /* CONFIG_BOXBLUR_OPENCL_FILTER */

+ 10
- 106
libavfilter/vf_boxblur.c View File

@@ -27,39 +27,13 @@

#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
#include "boxblur.h"

static const char *const var_names[] = {
"w",
"h",
"cw",
"ch",
"hsub",
"vsub",
NULL
};

enum var_name {
VAR_W,
VAR_H,
VAR_CW,
VAR_CH,
VAR_HSUB,
VAR_VSUB,
VARS_NB
};

typedef struct FilterParam {
int radius;
int power;
char *radius_expr;
} FilterParam;

typedef struct BoxBlurContext {
const AVClass *class;
@@ -73,40 +47,6 @@ typedef struct BoxBlurContext {
uint8_t *temp[2]; ///< temporary buffer used in blur_power()
} BoxBlurContext;

#define Y 0
#define U 1
#define V 2
#define A 3

static av_cold int init(AVFilterContext *ctx)
{
BoxBlurContext *s = ctx->priv;

if (!s->luma_param.radius_expr) {
av_log(ctx, AV_LOG_ERROR, "Luma radius expression is not set.\n");
return AVERROR(EINVAL);
}

/* fill missing params */
if (!s->chroma_param.radius_expr) {
s->chroma_param.radius_expr = av_strdup(s->luma_param.radius_expr);
if (!s->chroma_param.radius_expr)
return AVERROR(ENOMEM);
}
if (s->chroma_param.power < 0)
s->chroma_param.power = s->luma_param.power;

if (!s->alpha_param.radius_expr) {
s->alpha_param.radius_expr = av_strdup(s->luma_param.radius_expr);
if (!s->alpha_param.radius_expr)
return AVERROR(ENOMEM);
}
if (s->alpha_param.power < 0)
s->alpha_param.power = s->luma_param.power;

return 0;
}

static av_cold void uninit(AVFilterContext *ctx)
{
BoxBlurContext *s = ctx->priv;
@@ -138,9 +78,6 @@ static int config_input(AVFilterLink *inlink)
AVFilterContext *ctx = inlink->dst;
BoxBlurContext *s = ctx->priv;
int w = inlink->w, h = inlink->h;
int cw, ch;
double var_values[VARS_NB], res;
char *expr;
int ret;

if (!(s->temp[0] = av_malloc(2*FFMAX(w, h))) ||
@@ -150,48 +87,16 @@ static int config_input(AVFilterLink *inlink)
s->hsub = desc->log2_chroma_w;
s->vsub = desc->log2_chroma_h;

var_values[VAR_W] = inlink->w;
var_values[VAR_H] = inlink->h;
var_values[VAR_CW] = cw = w>>s->hsub;
var_values[VAR_CH] = ch = h>>s->vsub;
var_values[VAR_HSUB] = 1<<s->hsub;
var_values[VAR_VSUB] = 1<<s->vsub;

#define EVAL_RADIUS_EXPR(comp) \
expr = s->comp##_param.radius_expr; \
ret = av_expr_parse_and_eval(&res, expr, var_names, var_values, \
NULL, NULL, NULL, NULL, NULL, 0, ctx); \
s->comp##_param.radius = res; \
if (ret < 0) { \
av_log(NULL, AV_LOG_ERROR, \
"Error when evaluating " #comp " radius expression '%s'\n", expr); \
return ret; \
}
EVAL_RADIUS_EXPR(luma);
EVAL_RADIUS_EXPR(chroma);
EVAL_RADIUS_EXPR(alpha);

av_log(ctx, AV_LOG_VERBOSE,
"luma_radius:%d luma_power:%d "
"chroma_radius:%d chroma_power:%d "
"alpha_radius:%d alpha_power:%d "
"w:%d chroma_w:%d h:%d chroma_h:%d\n",
s->luma_param .radius, s->luma_param .power,
s->chroma_param.radius, s->chroma_param.power,
s->alpha_param .radius, s->alpha_param .power,
w, cw, h, ch);

#define CHECK_RADIUS_VAL(w_, h_, comp) \
if (s->comp##_param.radius < 0 || \
2*s->comp##_param.radius > FFMIN(w_, h_)) { \
av_log(ctx, AV_LOG_ERROR, \
"Invalid " #comp " radius value %d, must be >= 0 and <= %d\n", \
s->comp##_param.radius, FFMIN(w_, h_)/2); \
return AVERROR(EINVAL); \
ret = ff_boxblur_eval_filter_params(inlink,
&s->luma_param,
&s->chroma_param,
&s->alpha_param);

if (ret != 0) {
av_log(ctx, AV_LOG_ERROR, "Failed to evaluate "
"filter params: %d.\n", ret);
return ret;
}
CHECK_RADIUS_VAL(w, h, luma);
CHECK_RADIUS_VAL(cw, ch, chroma);
CHECK_RADIUS_VAL(w, h, alpha);

s->radius[Y] = s->luma_param.radius;
s->radius[U] = s->radius[V] = s->chroma_param.radius;
@@ -404,7 +309,6 @@ AVFilter ff_vf_boxblur = {
.description = NULL_IF_CONFIG_SMALL("Blur the input."),
.priv_size = sizeof(BoxBlurContext),
.priv_class = &boxblur_class,
.init = init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = avfilter_vf_boxblur_inputs,


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