libavfilter/vf_avgblur_opencl.c - third_party/ffmpeg - Git at Google

 /*
  * Copyright (c) 2018 Dylan Fernando
  *
  * 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 "avfilter.h"
 #include "internal.h"
 #include "opencl.h"
 #include "opencl_source.h"
 #include "video.h"


 typedef struct AverageBlurOpenCLContext {
     OpenCLFilterContext ocf;

     int              initialised;
     cl_kernel        kernel_horiz;
     cl_kernel        kernel_vert;
     cl_command_queue command_queue;

     int radius;
     int radiusV;
     int planes;

 } AverageBlurOpenCLContext;


 static int avgblur_opencl_init(AVFilterContext *avctx)
 {
     AverageBlurOpenCLContext *ctx = avctx->priv;
     cl_int cle;
     int err;

     err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_avgblur, 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,"avgblur_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_vert = clCreateKernel(ctx->ocf.program,"avgblur_vert", &cle);
     if (!ctx->kernel_vert) {
         av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
         err = AVERROR(EIO);
         goto fail;
     }

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

     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_vert)
         clReleaseKernel(ctx->kernel_vert);
     return err;
 }

 static int avgblur_opencl_filter_frame(AVFilterLink *inlink, AVFrame *input)
 {
     AVFilterContext    *avctx = inlink->dst;
     AVFilterLink     *outlink = avctx->outputs[0];
     AverageBlurOpenCLContext *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, radius_x, radius_y;

     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 = avgblur_opencl_init(avctx);
         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;

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

         if (!(ctx->planes & (1 << p))) {
             radius_x = 0;
             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;
         }

     }

     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 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)
             av_log(avctx, AV_LOG_ERROR, "Failed to release "
                    "kernel: %d.\n", cle);
     }

     if (ctx->kernel_vert) {
         cle = clReleaseKernel(ctx->kernel_vert);
         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(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[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_VIDEO,
         .filter_frame = &avgblur_opencl_filter_frame,
         .config_props = &ff_opencl_filter_config_input,
     },
     { NULL }
 };

 static const AVFilterPad avgblur_opencl_outputs[] = {
     {
         .name         = "default",
         .type         = AVMEDIA_TYPE_VIDEO,
         .config_props = &ff_opencl_filter_config_output,
     },
     { NULL }
 };

 AVFilter ff_vf_avgblur_opencl = {
     .name           = "avgblur_opencl",
     .description    = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
     .priv_size      = sizeof(AverageBlurOpenCLContext),
     .priv_class     = &avgblur_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,
 };
	/*
	* Copyright (c) 2018 Dylan Fernando
	*
	* 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 "avfilter.h"
	#include "internal.h"
	#include "opencl.h"
	#include "opencl_source.h"
	#include "video.h"


	typedef struct AverageBlurOpenCLContext {
	OpenCLFilterContext ocf;

	int initialised;
	cl_kernel kernel_horiz;
	cl_kernel kernel_vert;
	cl_command_queue command_queue;

	int radius;
	int radiusV;
	int planes;

	} AverageBlurOpenCLContext;


	static int avgblur_opencl_init(AVFilterContext *avctx)
	{
	AverageBlurOpenCLContext *ctx = avctx->priv;
	cl_int cle;
	int err;

	err = ff_opencl_filter_load_program(avctx, &ff_opencl_source_avgblur, 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,"avgblur_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_vert = clCreateKernel(ctx->ocf.program,"avgblur_vert", &cle);
	if (!ctx->kernel_vert) {
	av_log(avctx, AV_LOG_ERROR, "Failed to create kernel: %d.\n", cle);
	err = AVERROR(EIO);
	goto fail;
	}

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

	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_vert)
	clReleaseKernel(ctx->kernel_vert);
	return err;
	}

	static int avgblur_opencl_filter_frame(AVFilterLink inlink, AVFrame input)
	{
	AVFilterContext *avctx = inlink->dst;
	AVFilterLink *outlink = avctx->outputs[0];
	AverageBlurOpenCLContext *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, radius_x, radius_y;

	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 = avgblur_opencl_init(avctx);
	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;

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

	if (!(ctx->planes & (1 << p))) {
	radius_x = 0;
	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;
	}

	}

	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 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)
	av_log(avctx, AV_LOG_ERROR, "Failed to release "
	"kernel: %d.\n", cle);
	}

	if (ctx->kernel_vert) {
	cle = clReleaseKernel(ctx->kernel_vert);
	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(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[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	.filter_frame = &avgblur_opencl_filter_frame,
	.config_props = &ff_opencl_filter_config_input,
	},
	{ NULL }
	};

	static const AVFilterPad avgblur_opencl_outputs[] = {
	{
	.name = "default",
	.type = AVMEDIA_TYPE_VIDEO,
	.config_props = &ff_opencl_filter_config_output,
	},
	{ NULL }
	};

	AVFilter ff_vf_avgblur_opencl = {
	.name = "avgblur_opencl",
	.description = NULL_IF_CONFIG_SMALL("Apply average blur filter"),
	.priv_size = sizeof(AverageBlurOpenCLContext),
	.priv_class = &avgblur_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,
	};