Add opencl version of boxblur filter.
Behaves like existing libavfilter/boxblur filter.
Resubmitting patch because I used unnecessary variable inside kernels. Now it's
fixed.
---
configure | 1 +
libavfilter/Makefile | 2 +
libavfilter/allfilters.c | 1 +
libavfilter/opencl/boxblur.cl | 53 +++++
libavfilter/opencl_source.h | 1 +
libavfilter/vf_boxblur_opencl.c | 468 ++++++++++++++++++++++++++++++++++++++++
6 files changed, 526 insertions(+)
create mode 100644 libavfilter/opencl/boxblur.cl
create mode 100644 libavfilter/vf_boxblur_opencl.c
diff --git a/configure b/configure
index e52f8f8..f8a2487 100755
--- a/configure
+++ b/configure
@@ -3302,6 +3302,7 @@ avgblur_opencl_filter_deps="opencl"
azmq_filter_deps="libzmq"
blackframe_filter_deps="gpl"
boxblur_filter_deps="gpl"
+boxblur_opencl_filter_deps="opencl"
bs2b_filter_deps="libbs2b"
colormatrix_filter_deps="gpl"
convolution_opencl_filter_deps="opencl"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index c68ef05..97afdef 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -153,6 +153,8 @@ 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-$(CONFIG_BOXBLUR_OPENCL_FILTER) += vf_boxblur_opencl.o opencl.o \
+ opencl/boxblur.o
OBJS-$(CONFIG_BWDIF_FILTER) += vf_bwdif.o
OBJS-$(CONFIG_CHROMAKEY_FILTER) += vf_chromakey.o
OBJS-$(CONFIG_CIESCOPE_FILTER) += vf_ciescope.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index b44093d..97d92a0 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -146,6 +146,7 @@ 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;
diff --git a/libavfilter/opencl/boxblur.cl b/libavfilter/opencl/boxblur.cl
new file mode 100644
index 0000000..9ecb441
--- /dev/null
+++ b/libavfilter/opencl/boxblur.cl
@@ -0,0 +1,53 @@
+/*
+ * 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
+ */
+
+__kernel void boxblur_horiz(__write_only image2d_t dst,
+ __read_only image2d_t src,
+ int rad)
+{
+ const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
+ CLK_ADDRESS_CLAMP_TO_EDGE |
+ CLK_FILTER_NEAREST);
+
+ int2 loc = (int2)(get_global_id(0), get_global_id(1));
+ float4 acc = (float4)(0,0,0,0);
+
+ for (int w = loc.x - rad; w < loc.x + rad + 1; w++) {
+ acc += read_imagef(src, sampler, (int2)(w, loc.y));
+ }
+ write_imagef(dst, loc, acc / (rad * 2 + 1));
+}
+
+__kernel void boxblur_vertic(__write_only image2d_t dst,
+ __read_only image2d_t src,
+ int radv)
+{
+ const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE |
+ CLK_ADDRESS_CLAMP_TO_EDGE |
+ CLK_FILTER_NEAREST);
+
+ int2 loc = (int2)(get_global_id(0), get_global_id(1));
+ float4 acc = (float4)(0,0,0,0);
+
+ for (int h = loc.y - radv; h < loc.y + radv + 1; h++) {
+ acc += read_imagef(src, sampler, (int2)(loc.x, h));
+ }
+ write_imagef(dst, loc, acc / (radv * 2 + 1));
+}
diff --git a/libavfilter/opencl_source.h b/libavfilter/opencl_source.h
index 4bb9969..2e09770 100644
--- a/libavfilter/opencl_source.h
+++ b/libavfilter/opencl_source.h
@@ -20,6 +20,7 @@
#define AVFILTER_OPENCL_SOURCE_H
extern const char *ff_opencl_source_avgblur;
+extern const char *ff_opencl_source_boxblur;
extern const char *ff_opencl_source_convolution;
extern const char *ff_opencl_source_overlay;
extern const char *ff_opencl_source_unsharp;
diff --git a/libavfilter/vf_boxblur_opencl.c b/libavfilter/vf_boxblur_opencl.c
new file mode 100644
index 0000000..d46fb0f
--- /dev/null
+++ b/libavfilter/vf_boxblur_opencl.c
@@ -0,0 +1,468 @@
+/*
+ * 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 "libavutil/common.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/mem.h"
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "libavutil/avstring.h"
+#include "libavutil/eval.h"
+
+
+#include "avfilter.h"
+#include "internal.h"
+#include "opencl.h"
+#include "opencl_source.h"
+#include "video.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 BoxBlurOpenCLContext {
+ OpenCLFilterContext ocf;
+
+ int initialised;
+ cl_kernel kernel_horiz;
+ cl_kernel kernel_vertic;
+ cl_command_queue command_queue;
+
+ FilterParam luma_param;
+ FilterParam chroma_param;
+ FilterParam alpha_param;
+
+ int hsub, vsub;
+ int radius[4];
+ int power[4];
+} BoxBlurOpenCLContext;
+
+
+#define Y 0
+#define U 1
+#define V 2
+#define A 3
+
+
+static int boxblur_opencl_init(AVFilterContext *avctx)
+{
+ BoxBlurOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+ int err;
+
+ err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_boxblur, 1);
+ if (err < 0)
+ goto fail;
+
+ ctx->command_queue = clCreateCommandQueue(ctx->ocf.hwctx->context,
+ ctx->ocf.hwctx->device_id,
+ 0, &cle);
+ if (!ctx->command_queue) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create OpenCL "
+ "command queue: %d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+
+ ctx->kernel_horiz = clCreateKernel(ctx->ocf.program, "boxblur_horiz",
&cle);
+ if (!ctx->kernel_horiz) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+ ctx->kernel_vertic = clCreateKernel(ctx->ocf.program, "boxblur_vertic",
&cle);
+ if (!ctx->kernel_vertic) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+
+ ctx->initialised = 1;
+ return 0;
+
+fail:
+ if (ctx->command_queue)
+ clReleaseCommandQueue(ctx->command_queue);
+ if (ctx->kernel_horiz)
+ clReleaseKernel(ctx->kernel_horiz);
+ if (ctx->kernel_vertic)
+ clReleaseKernel(ctx->kernel_vertic);
+ return err;
+}
+
+
+static int boxblur_opencl_make_filter_params(AVFilterLink *inlink)
+{
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
+ AVFilterContext *ctx = inlink->dst;
+ BoxBlurOpenCLContext *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->luma_param.radius_expr) {
+ av_log(s, 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;
+
+ 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); \
+ }
+ 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;
+ 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;
+
+ return 0;
+}
+
+
+static int boxblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
+{
+ AVFilterContext *avctx = inlink->dst;
+ AVFilterLink *outlink = avctx->outputs[0];
+ BoxBlurOpenCLContext *ctx = avctx->priv;
+ AVFrame *output = NULL;
+ AVFrame *intermediate = NULL;
+ cl_int cle;
+ size_t global_work[2];
+ cl_mem src, dst, inter;
+ int err, p, i;
+
+ av_log(ctx, AV_LOG_DEBUG, "Filter input: %s, %ux%u (%"PRId64").\n",
+ av_get_pix_fmt_name(input->format),
+ input->width, input->height, input->pts);
+
+ if (!input->hw_frames_ctx)
+ return AVERROR(EINVAL);
+
+ if (!ctx->initialised) {
+ err = boxblur_opencl_init(avctx);
+ if (err < 0)
+ goto fail;
+
+ err = boxblur_opencl_make_filter_params(inlink);
+ if (err < 0)
+ goto fail;
+ }
+
+ output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!output) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+ intermediate = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!intermediate) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ 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];
+
+ if (!dst)
+ break;
+
+ 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 = clSetKernelArg(ctx->kernel_horiz, 2, sizeof(cl_int),
&ctx->radius[p]);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel_horiz "
+ "radius argument: %d.\n", cle);
+ goto fail;
+ }
+
+ for (i = 0; i < ctx->power[p]; i++) {
+ cle = clSetKernelArg(ctx->kernel_horiz, 0, sizeof(cl_mem), &inter);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel_horiz "
+ "destination image argument: %d.\n", cle);
+ 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_horiz "
+ "source image argument: %d.\n", cle);
+ 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;
+ }
+ src = inter;
+ }
+
+ 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 = clSetKernelArg(ctx->kernel_vertic, 2, sizeof(cl_int),
&ctx->radius[p]);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel_vertic "
+ "radius argument: %d.\n", cle);
+ goto fail;
+ }
+
+ for (i = 0; i < ctx->power[p]; i++) {
+ cle = clSetKernelArg(ctx->kernel_vertic, 0, sizeof(cl_mem), &dst);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel_vertic "
+ "destination image argument: %d.\n", cle);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel_vertic, 1, sizeof(cl_mem),
&inter);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel_vertic "
+ "source image argument: %d.\n", cle);
+ goto fail;
+ }
+ cle = clEnqueueNDRangeKernel(ctx->command_queue,
ctx->kernel_vertic, 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;
+ }
+ inter = dst;
+ }
+
+ }
+
+ cle = clFinish(ctx->command_queue);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to finish command queue: %d.\n",
+ cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+
+ err = av_frame_copy_props(output, input);
+ if (err < 0)
+ goto fail;
+
+ av_frame_free(&input);
+ av_frame_free(&intermediate);
+
+ av_log(ctx, AV_LOG_DEBUG, "Filter output: %s, %ux%u (%"PRId64").\n",
+ av_get_pix_fmt_name(output->format),
+ output->width, output->height, output->pts);
+
+ return ff_filter_frame(outlink, output);
+
+fail:
+ clFinish(ctx->command_queue);
+ av_frame_free(&input);
+ av_frame_free(&output);
+ av_frame_free(&intermediate);
+ return err;
+}
+
+static av_cold void boxblur_opencl_uninit(AVFilterContext *avctx)
+{
+ BoxBlurOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+
+ if (ctx->kernel_horiz) {
+ cle = clReleaseKernel(ctx->kernel_horiz);
+ if (cle != CL_SUCCESS)
+ av_log(avctx, AV_LOG_ERROR, "Failed to release "
+ "kernel: %d.\n", cle);
+ }
+ if (ctx->kernel_vertic) {
+ cle = clReleaseKernel(ctx->kernel_vertic);
+ if (cle != CL_SUCCESS)
+ av_log(avctx, AV_LOG_ERROR, "Failed to release "
+ "kernel: %d.\n", cle);
+ }
+
+ if (ctx->command_queue) {
+ cle = clReleaseCommandQueue(ctx->command_queue);
+ if (cle != CL_SUCCESS)
+ av_log(avctx, AV_LOG_ERROR, "Failed to release "
+ "command queue: %d.\n", cle);
+ }
+
+ ff_opencl_filter_uninit(avctx);
+}
+
+#define OFFSET(x) offsetof(BoxBlurOpenCLContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+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);
+
+static const AVFilterPad boxblur_opencl_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = &boxblur_opencl_filter_frame,
+ .config_props = &ff_opencl_filter_config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad boxblur_opencl_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_opencl_filter_config_output,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_boxblur_opencl = {
+ .name = "boxblur_opencl",
+ .description = NULL_IF_CONFIG_SMALL("Apply boxblur filter to input
video"),
+ .priv_size = sizeof(BoxBlurOpenCLContext),
+ .priv_class = &boxblur_opencl_class,
+ .init = &ff_opencl_filter_init,
+ .uninit = &boxblur_opencl_uninit,
+ .query_formats = &ff_opencl_filter_query_formats,
+ .inputs = boxblur_opencl_inputs,
+ .outputs = boxblur_opencl_outputs,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
--
2.7.4
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