[FFmpeg-devel] [PATCH] libavfilter: Add OpenCL convolution filter.
Danil Iashchenko
danyaschenko at gmail.com
Wed Mar 14 01:32:18 EET 2018
Behaves like the existing convolution filter, except working on OpenCL
hardware frames.
Takes exactly the same options: 4 convolution matrices, 4 rdiv values, 4 bias values.
If not specified, default parameters are applied.
Matrices can be different sizes.
filter applies:
matrix0, rdiv0, bias0 to image plane0.
matrix1, rdiv1, bias1 to image plane1.
matrix2, rdiv2, bias2 to image plane2.
matrix3, rdiv3, bias3 to image plane3.
About Kernel parameters:
dst - destination image
src - source image
coef_matrices_sizes - stores sizes of matrix{0..3} consecutively one after the other
coef_matrices - stores matrices{0..3} consecutively one after the other
rdivs - stores rdiv{0..3} parameters consecutively one after the other
biases - stores bias{0..3} parameters consecutively one after the other
About sscanf. I had (!err_code) condition, because I would never get empty line
as option(if not specified, I always have default matrix), but changed to (err_code != 1) due to read-ability.
Also, before sscanf I split matrix with spaces, so I process each single value
of matrix seperately from others and check if they are ok.
about rdiv_buffer, bias_buffer, size_buffer objects: they should be buffer
objects, because they store sequence of values, not a single value
---
configure | 1 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/opencl/convolution.cl | 43 ++++
libavfilter/opencl_source.h | 1 +
libavfilter/vf_convolution_opencl.c | 449 ++++++++++++++++++++++++++++++++++++
6 files changed, 496 insertions(+)
create mode 100644 libavfilter/opencl/convolution.cl
create mode 100644 libavfilter/vf_convolution_opencl.c
diff --git a/configure b/configure
index 6916b45..bf5c312 100755
--- a/configure
+++ b/configure
@@ -3210,6 +3210,7 @@ blackframe_filter_deps="gpl"
boxblur_filter_deps="gpl"
bs2b_filter_deps="libbs2b"
colormatrix_filter_deps="gpl"
+convolution_opencl_filter_deps="opencl"
convolve_filter_deps="avcodec"
convolve_filter_select="fft"
coreimage_filter_deps="coreimage appkit"
diff --git a/libavfilter/Makefile b/libavfilter/Makefile
index 6a60836..d005934 100644
--- a/libavfilter/Makefile
+++ b/libavfilter/Makefile
@@ -156,6 +156,7 @@ OBJS-$(CONFIG_COLORLEVELS_FILTER) += vf_colorlevels.o
OBJS-$(CONFIG_COLORMATRIX_FILTER) += vf_colormatrix.o
OBJS-$(CONFIG_COLORSPACE_FILTER) += vf_colorspace.o colorspacedsp.o
OBJS-$(CONFIG_CONVOLUTION_FILTER) += vf_convolution.o
+OBJS-$(CONFIG_CONVOLUTION_OPENCL_FILTER) += vf_convolution_opencl.o opencl.o opencl/convolution.o
OBJS-$(CONFIG_CONVOLVE_FILTER) += vf_convolve.o framesync.o
OBJS-$(CONFIG_COPY_FILTER) += vf_copy.o
OBJS-$(CONFIG_COREIMAGE_FILTER) += vf_coreimage.o
diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index 9adb109..f2dc55e 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -166,6 +166,7 @@ static void register_all(void)
REGISTER_FILTER(COLORMATRIX, colormatrix, vf);
REGISTER_FILTER(COLORSPACE, colorspace, vf);
REGISTER_FILTER(CONVOLUTION, convolution, vf);
+ REGISTER_FILTER(CONVOLUTION_OPENCL, convolution_opencl, vf);
REGISTER_FILTER(CONVOLVE, convolve, vf);
REGISTER_FILTER(COPY, copy, vf);
REGISTER_FILTER(COREIMAGE, coreimage, vf);
diff --git a/libavfilter/opencl/convolution.cl b/libavfilter/opencl/convolution.cl
new file mode 100644
index 0000000..b142aa8
--- /dev/null
+++ b/libavfilter/opencl/convolution.cl
@@ -0,0 +1,43 @@
+/*
+ * 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 convolution_global(__write_only image2d_t dst,
+ __read_only image2d_t src,
+ __constant int *coef_matrices_sizes,
+ __constant float *coef_matrices,
+ __constant float *rdivs,
+ __constant float *biases)
+{
+ const sampler_t sampler = (CLK_NORMALIZED_COORDS_FALSE | CLK_FILTER_NEAREST);
+
+ int2 loc = (int2)(get_global_id(0), get_global_id(1));
+
+ float4 convPix = (float4)(0.0f, 0.0f, 0.0f, 0.0f);
+ for (int i = 0; i < 4; i++) {
+ int half_matrix_size = coef_matrices_sizes[i] / 2;
+ for (int conv_i = -half_matrix_size; conv_i <= half_matrix_size; conv_i++) {
+ for (int conv_j = -half_matrix_size; conv_j <= half_matrix_size; conv_j++) {
+ float4 px = read_imagef(src, sampler, loc + (int2)(conv_j, conv_i));
+ convPix[i] += px[i] * coef_matrices[(coef_matrices_sizes[i]*coef_matrices_sizes[i]*i)
+ + (conv_i+half_matrix_size) * coef_matrices_sizes[i] + (conv_j+half_matrix_size)];
+ }
+ }
+ convPix[i] = convPix[i] * rdivs[i] + biases[i];
+ }
+ write_imagef(dst, loc, convPix);
+}
diff --git a/libavfilter/opencl_source.h b/libavfilter/opencl_source.h
index 23cdfc6..158fb3e 100644
--- a/libavfilter/opencl_source.h
+++ b/libavfilter/opencl_source.h
@@ -19,6 +19,7 @@
#ifndef AVFILTER_OPENCL_SOURCE_H
#define AVFILTER_OPENCL_SOURCE_H
+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_convolution_opencl.c b/libavfilter/vf_convolution_opencl.c
new file mode 100644
index 0000000..e78c8ef
--- /dev/null
+++ b/libavfilter/vf_convolution_opencl.c
@@ -0,0 +1,449 @@
+/*
+ * 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 "avfilter.h"
+#include "internal.h"
+#include "opencl.h"
+#include "opencl_source.h"
+#include "video.h"
+
+typedef struct ConvolutionOpenCLContext {
+ OpenCLFilterContext ocf;
+
+ int initialised;
+ cl_kernel kernel;
+ cl_command_queue command_queue;
+
+ char *matrix_str[4];
+ float rdiv[4];
+ float bias[4];
+ cl_int size[4];
+
+ cl_int total_matrix_len;
+ cl_int matrix_length[4];
+ cl_mem matrix;
+ cl_mem rdiv_buffer;
+ cl_mem bias_buffer;
+ cl_mem size_buffer;
+
+} ConvolutionOpenCLContext;
+
+
+static int convolution_opencl_init(AVFilterContext *avctx)
+{
+ ConvolutionOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+ int err;
+
+ err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_convolution, 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 = clCreateKernel(ctx->ocf.program, "convolution_global", &cle);
+ if (!ctx->kernel) {
+ 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)
+ clReleaseKernel(ctx->kernel);
+ return err;
+}
+
+
+static int convolution_opencl_make_filter_params(AVFilterContext *avctx)
+{
+ ConvolutionOpenCLContext *ctx = avctx->priv;
+ float *matrix = NULL;
+ float *matrix_rdiv = NULL;
+ float *matrix_bias = NULL;
+ int *matrix_size = NULL;
+ size_t matrix_bytes;
+ cl_mem buffer, buffer_rdiv, buffer_bias, buffer_size;
+ cl_int cle;
+ int err, sscanf_err;
+ int i, j, cnt;
+ char *p, *arg, *saveptr = NULL;
+ float input_matrix[4][49];
+
+ ctx->total_matrix_len = 0;
+ for (i = 0; i < 4; i++) {
+ p = ctx->matrix_str[i];
+ while (ctx->matrix_length[i] < 49) {
+ if (!(arg = av_strtok(p, " ", &saveptr)))
+ break;
+ p = NULL;
+ sscanf_err = sscanf(arg, "%f", &input_matrix[i][ctx->matrix_length[i]]);
+ if (sscanf_err != 1) {
+ av_log(ctx, AV_LOG_ERROR, "Matrix is sequence of 9, 25 or 49 signed numbers\n");
+ return AVERROR(EINVAL);
+ }
+ ctx->matrix_length[i]++;
+ }
+ if (ctx->matrix_length[i] == 9) {
+ ctx->size[i] = 3;
+ } else if (ctx->matrix_length[i] == 25) {
+ ctx->size[i] = 5;
+ } else if (ctx->matrix_length[i] == 49) {
+ ctx->size[i] = 7;
+ } else {
+ av_log(ctx, AV_LOG_ERROR, "Invalid matrix size:%d\n", ctx->matrix_length[i]);
+ return AVERROR(EINVAL);
+ }
+ ctx->total_matrix_len += ctx->matrix_length[i];
+
+ }
+ matrix_bytes = sizeof(float)*ctx->total_matrix_len;
+ matrix = av_malloc(matrix_bytes);
+ if (!matrix) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+ cnt = 0;
+ for (i = 0; i < 4; i++) {
+ for (j = 0; j < ctx->matrix_length[i]; j++) {
+ matrix[cnt++] = input_matrix[i][j];
+ }
+ }
+
+ buffer = clCreateBuffer(ctx->ocf.hwctx->context,
+ CL_MEM_READ_ONLY |
+ CL_MEM_COPY_HOST_PTR |
+ CL_MEM_HOST_NO_ACCESS,
+ matrix_bytes, matrix, &cle);
+ if (!buffer) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create matrix buffer: "
+ "%d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+ ctx->matrix = buffer;
+
+
+ matrix_bytes = sizeof(float)*4;
+ matrix_rdiv = av_malloc(matrix_bytes);
+ if (!matrix_rdiv) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ for (j = 0; j < 4; j++) {
+ matrix_rdiv[j] = ctx->rdiv[j];
+ }
+ buffer_rdiv = clCreateBuffer(ctx->ocf.hwctx->context,
+ CL_MEM_READ_ONLY |
+ CL_MEM_COPY_HOST_PTR |
+ CL_MEM_HOST_NO_ACCESS,
+ matrix_bytes, matrix_rdiv, &cle);
+ if (!buffer_rdiv) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create rdiv buffer: "
+ "%d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+ ctx->rdiv_buffer = buffer_rdiv;
+
+
+ matrix_bytes = sizeof(float)*4;
+ matrix_bias = av_malloc(matrix_bytes);
+ if (!matrix_bias) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ for (j = 0; j < 4; j++) {
+ matrix_bias[j] = ctx->bias[j];
+ }
+ buffer_bias = clCreateBuffer(ctx->ocf.hwctx->context,
+ CL_MEM_READ_ONLY |
+ CL_MEM_COPY_HOST_PTR |
+ CL_MEM_HOST_NO_ACCESS,
+ matrix_bytes, matrix_bias, &cle);
+ if (!buffer_bias) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create bias buffer: "
+ "%d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+ ctx->bias_buffer = buffer_bias;
+
+ matrix_bytes = sizeof(int)*4;
+ matrix_size = av_malloc(matrix_bytes);
+ if (!matrix_size) {
+ err = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ for (j = 0; j < 4; j++) {
+ matrix_size[j] = ctx->size[j];
+ }
+ buffer_size = clCreateBuffer(ctx->ocf.hwctx->context,
+ CL_MEM_READ_ONLY |
+ CL_MEM_COPY_HOST_PTR |
+ CL_MEM_HOST_NO_ACCESS,
+ matrix_bytes, matrix_size, &cle);
+ if (!buffer_size) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to create bias buffer: "
+ "%d.\n", cle);
+ err = AVERROR(EIO);
+ goto fail;
+ }
+ ctx->size_buffer = buffer_size;
+
+ err = 0;
+fail:
+ av_freep(&matrix_size);
+ av_freep(&matrix_bias);
+ av_freep(&matrix_rdiv);
+ av_freep(&matrix);
+ return err;
+}
+
+static int convolution_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
+{
+ AVFilterContext *avctx = inlink->dst;
+ AVFilterLink *outlink = avctx->outputs[0];
+ ConvolutionOpenCLContext *ctx = avctx->priv;
+ AVFrame *output = NULL;
+ cl_int cle;
+ size_t global_work[2];
+ cl_mem src, dst;
+ int err, p;
+
+ 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 = convolution_opencl_init(avctx);
+ if (err < 0)
+ goto fail;
+
+ err = convolution_opencl_make_filter_params(avctx);
+ if (err < 0)
+ goto fail;
+ }
+
+ output = ff_get_video_buffer(outlink, outlink->w, outlink->h);
+ if (!output) {
+ 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];
+
+
+ if (!dst)
+ break;
+
+ cle = clSetKernelArg(ctx->kernel, 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);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel, 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);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel, 2, sizeof(cl_mem), &ctx->size_buffer);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+ "matrix size argument: %d.\n", cle);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel, 3, sizeof(cl_mem), &ctx->matrix);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+ "matrix argument: %d.\n", cle);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel, 4, sizeof(cl_mem), &ctx->rdiv_buffer);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+ "div argument: %d.\n", cle);
+ goto fail;
+ }
+ cle = clSetKernelArg(ctx->kernel, 5, sizeof(cl_mem), &ctx->bias_buffer);
+ if (cle != CL_SUCCESS) {
+ av_log(avctx, AV_LOG_ERROR, "Failed to set kernel "
+ "bias argument: %d.\n", cle);
+ goto fail;
+ }
+
+
+
+ global_work[0] = output->width;
+ global_work[1] = output->height;
+
+
+ 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, 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);
+ 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_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);
+ return err;
+}
+
+static av_cold void convolution_opencl_uninit(AVFilterContext *avctx)
+{
+ ConvolutionOpenCLContext *ctx = avctx->priv;
+ cl_int cle;
+
+ if (ctx->matrix) {
+ clReleaseMemObject(ctx->matrix);
+ clReleaseMemObject(ctx->rdiv_buffer);
+ clReleaseMemObject(ctx->bias_buffer);
+ clReleaseMemObject(ctx->size_buffer);
+ }
+
+ if (ctx->kernel) {
+ cle = clReleaseKernel(ctx->kernel);
+ 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(ConvolutionOpenCLContext, x)
+#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
+static const AVOption convolution_opencl_options[] = {
+ { "0m", "set matrix for 1st plane", OFFSET(matrix_str[0]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+ { "1m", "set matrix for 2nd plane", OFFSET(matrix_str[1]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+ { "2m", "set matrix for 3rd plane", OFFSET(matrix_str[2]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+ { "3m", "set matrix for 4th plane", OFFSET(matrix_str[3]), AV_OPT_TYPE_STRING, {.str="0 0 0 0 1 0 0 0 0"}, 0, 0, FLAGS },
+ { "0rdiv", "set rdiv for 1st plane", OFFSET(rdiv[0]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+ { "1rdiv", "set rdiv for 2nd plane", OFFSET(rdiv[1]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+ { "2rdiv", "set rdiv for 3rd plane", OFFSET(rdiv[2]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+ { "3rdiv", "set rdiv for 4th plane", OFFSET(rdiv[3]), AV_OPT_TYPE_FLOAT, {.dbl=1.0}, 0.0, INT_MAX, FLAGS},
+ { "0bias", "set bias for 1st plane", OFFSET(bias[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+ { "1bias", "set bias for 2nd plane", OFFSET(bias[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+ { "2bias", "set bias for 3rd plane", OFFSET(bias[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+ { "3bias", "set bias for 4th plane", OFFSET(bias[3]), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, INT_MAX, FLAGS},
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(convolution_opencl);
+
+
+static const AVFilterPad convolution_opencl_inputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = &convolution_opencl_filter_frame,
+ .config_props = &ff_opencl_filter_config_input,
+ },
+ { NULL }
+};
+
+static const AVFilterPad convolution_opencl_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = &ff_opencl_filter_config_output,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_convolution_opencl = {
+ .name = "convolution_opencl",
+ .description = NULL_IF_CONFIG_SMALL("Apply convolution mask to input video"),
+ .priv_size = sizeof(ConvolutionOpenCLContext),
+ .priv_class = &convolution_opencl_class,
+ .init = &ff_opencl_filter_init,
+ .uninit = &convolution_opencl_uninit,
+ .query_formats = &ff_opencl_filter_query_formats,
+ .inputs = convolution_opencl_inputs,
+ .outputs = convolution_opencl_outputs,
+ .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE,
+};
--
2.7.4
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