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[194.85.161.2]) by smtp.gmail.com with ESMTPSA id r101-v6sm3867894lfi.8.2018.05.27.15.07.55 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 27 May 2018 15:07:55 -0700 (PDT) From: Danil Iashchenko To: ffmpeg-devel@ffmpeg.org Date: Mon, 28 May 2018 01:07:52 +0300 Message-Id: <1527458872-10799-1-git-send-email-danyaschenko@gmail.com> X-Mailer: git-send-email 2.7.4 Subject: [FFmpeg-devel] [PATCH] libavfilter/boxblur_opencl filter. X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Cc: Danil Iashchenko MIME-Version: 1.0 Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" Add opencl version of boxblur filter. Behaves like existing libavfilter/boxblur filter. --- configure | 1 + libavfilter/Makefile | 2 + libavfilter/allfilters.c | 1 + libavfilter/opencl/boxblur.cl | 57 +++++ libavfilter/opencl_source.h | 1 + libavfilter/vf_boxblur_opencl.c | 468 ++++++++++++++++++++++++++++++++++++++++ 6 files changed, 530 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..a0d9dcd --- /dev/null +++ b/libavfilter/opencl/boxblur.cl @@ -0,0 +1,57 @@ +/* + * 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); + int cnt = 0; + + for (int w = loc.x - rad; w < loc.x + rad + 1; w++) { + cnt++; + acc += read_imagef(src, sampler, (int2)(w, loc.y)); + } + write_imagef(dst, loc, acc / cnt); +} + +__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); + int cnt = 0; + + for (int h = loc.y - radv; h < loc.y + radv + 1; h++) { + cnt++; + acc += read_imagef(src, sampler, (int2)(loc.x, h)); + } + write_imagef(dst, loc, acc / cnt); +} 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<hsub; + var_values[VAR_VSUB] = 1<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, +};