diff options
Diffstat (limited to 'libavfilter/vf_bilateral_cuda.c')
-rw-r--r-- | libavfilter/vf_bilateral_cuda.c | 479 |
1 files changed, 479 insertions, 0 deletions
diff --git a/libavfilter/vf_bilateral_cuda.c b/libavfilter/vf_bilateral_cuda.c new file mode 100644 index 0000000000..7a271f1ce0 --- /dev/null +++ b/libavfilter/vf_bilateral_cuda.c @@ -0,0 +1,479 @@ +/* + * Copyright (c) 2022 Mohamed Khaled <Mohamed_Khaled_Kamal@outlook.com> + * + * 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 <float.h> +#include <stdio.h> +#include <string.h> + +#include "libavutil/avstring.h" +#include "libavutil/common.h" +#include "libavutil/hwcontext.h" +#include "libavutil/hwcontext_cuda_internal.h" +#include "libavutil/cuda_check.h" +#include "libavutil/internal.h" +#include "libavutil/opt.h" +#include "libavutil/pixdesc.h" + +#include "avfilter.h" +#include "formats.h" +#include "internal.h" +#include "video.h" + +#include "cuda/load_helper.h" + +static const enum AVPixelFormat supported_formats[] = { + AV_PIX_FMT_YUV420P, + AV_PIX_FMT_NV12, + AV_PIX_FMT_YUV444P +}; + +#define DIV_UP(a, b) ( ((a) + (b) - 1) / (b) ) +#define BLOCKX 32 +#define BLOCKY 16 + +#define CHECK_CU(x) FF_CUDA_CHECK_DL(ctx, s->hwctx->internal->cuda_dl, x) + + +typedef struct CUDABilateralContext { + const AVClass *class; + AVCUDADeviceContext *hwctx; + + enum AVPixelFormat in_fmt, out_fmt; + const AVPixFmtDescriptor *in_desc, *out_desc; + int in_planes, out_planes; + int in_plane_depths[4]; + int in_plane_channels[4]; + + int window_size; + float sigmaS; + float sigmaR; + + AVBufferRef *frames_ctx; + AVFrame *frame; + AVFrame *tmp_frame; + + CUcontext cu_ctx; + CUmodule cu_module; + CUfunction cu_func; + CUfunction cu_func_uv; + CUstream cu_stream; +} CUDABilateralContext; + +static av_cold int cudabilateral_init(AVFilterContext *ctx) +{ + CUDABilateralContext *s = ctx->priv; + + s->frame = av_frame_alloc(); + if (!s->frame) + return AVERROR(ENOMEM); + + s->tmp_frame = av_frame_alloc(); + if (!s->tmp_frame) + return AVERROR(ENOMEM); + + return 0; +} + +static av_cold void cudabilateral_uninit(AVFilterContext *ctx) +{ + CUDABilateralContext *s = ctx->priv; + + if (s->hwctx && s->cu_module) { + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + CUcontext bilateral; + + CHECK_CU(cu->cuCtxPushCurrent(s->hwctx->cuda_ctx)); + CHECK_CU(cu->cuModuleUnload(s->cu_module)); + s->cu_module = NULL; + CHECK_CU(cu->cuCtxPopCurrent(&bilateral)); + } + + av_frame_free(&s->frame); + av_buffer_unref(&s->frames_ctx); + av_frame_free(&s->tmp_frame); +} + +static av_cold int init_hwframe_ctx(CUDABilateralContext *s, AVBufferRef *device_ctx, int width, int height) +{ + AVBufferRef *out_ref = NULL; + AVHWFramesContext *out_ctx; + int ret; + + out_ref = av_hwframe_ctx_alloc(device_ctx); + if (!out_ref) + return AVERROR(ENOMEM); + out_ctx = (AVHWFramesContext*)out_ref->data; + + out_ctx->format = AV_PIX_FMT_CUDA; + out_ctx->sw_format = s->out_fmt; + out_ctx->width = width; + out_ctx->height = height; + + ret = av_hwframe_ctx_init(out_ref); + if (ret < 0) + goto fail; + + av_frame_unref(s->frame); + ret = av_hwframe_get_buffer(out_ref, s->frame, 0); + if (ret < 0) + goto fail; + + av_buffer_unref(&s->frames_ctx); + s->frames_ctx = out_ref; + + return 0; +fail: + av_buffer_unref(&out_ref); + return ret; +} + +static int format_is_supported(enum AVPixelFormat fmt) +{ + int i; + + for (i = 0; i < FF_ARRAY_ELEMS(supported_formats); i++) + if (supported_formats[i] == fmt) + return 1; + return 0; +} + +static av_cold void set_format_info(AVFilterContext *ctx, enum AVPixelFormat in_format, enum AVPixelFormat out_format) +{ + CUDABilateralContext *s = ctx->priv; + int i, p, d; + + s->in_fmt = in_format; + s->out_fmt = out_format; + + s->in_desc = av_pix_fmt_desc_get(s->in_fmt); + s->out_desc = av_pix_fmt_desc_get(s->out_fmt); + s->in_planes = av_pix_fmt_count_planes(s->in_fmt); + s->out_planes = av_pix_fmt_count_planes(s->out_fmt); + + // find maximum step of each component of each plane + // For our subset of formats, this should accurately tell us how many channels CUDA needs + // i.e. 1 for Y plane, 2 for UV plane of NV12, 4 for single plane of RGB0 formats + + for (i = 0; i < s->in_desc->nb_components; i++) { + d = (s->in_desc->comp[i].depth + 7) / 8; + p = s->in_desc->comp[i].plane; + s->in_plane_channels[p] = FFMAX(s->in_plane_channels[p], s->in_desc->comp[i].step / d); + + s->in_plane_depths[p] = s->in_desc->comp[i].depth; + } +} + +static av_cold int init_processing_chain(AVFilterContext *ctx, int width, int height) +{ + CUDABilateralContext *s = ctx->priv; + AVHWFramesContext *in_frames_ctx; + int ret; + + /* check that we have a hw context */ + if (!ctx->inputs[0]->hw_frames_ctx) { + av_log(ctx, AV_LOG_ERROR, "No hw context provided on input\n"); + return AVERROR(EINVAL); + } + in_frames_ctx = (AVHWFramesContext*)ctx->inputs[0]->hw_frames_ctx->data; + + if (!format_is_supported(in_frames_ctx->sw_format)) { + av_log(ctx, AV_LOG_ERROR, "Unsupported format: %s\n", av_get_pix_fmt_name(in_frames_ctx->sw_format)); + return AVERROR(ENOSYS); + } + + set_format_info(ctx, in_frames_ctx->sw_format, in_frames_ctx->sw_format); + + ret = init_hwframe_ctx(s, in_frames_ctx->device_ref, width, height); + if (ret < 0) + return ret; + + ctx->outputs[0]->hw_frames_ctx = av_buffer_ref(s->frames_ctx); + if (!ctx->outputs[0]->hw_frames_ctx) + return AVERROR(ENOMEM); + + return 0; +} + +static av_cold int cuda_bilateral_load_functions(AVFilterContext *ctx) +{ + CUDABilateralContext *s = ctx->priv; + CUcontext bilateral, cuda_ctx = s->hwctx->cuda_ctx; + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + int ret; + + extern const unsigned char ff_vf_bilateral_cuda_ptx_data[]; + extern const unsigned int ff_vf_bilateral_cuda_ptx_len; + + ret = CHECK_CU(cu->cuCtxPushCurrent(cuda_ctx)); + if (ret < 0) + return ret; + + ret = ff_cuda_load_module(ctx, s->hwctx, &s->cu_module, + ff_vf_bilateral_cuda_ptx_data, ff_vf_bilateral_cuda_ptx_len); + if (ret < 0) + goto fail; + + ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func, s->cu_module, "Process_uchar")); + if (ret < 0) { + av_log(ctx, AV_LOG_FATAL, "Failed loading Process_uchar\n"); + goto fail; + } + + ret = CHECK_CU(cu->cuModuleGetFunction(&s->cu_func_uv, s->cu_module, "Process_uchar2")); + if (ret < 0) { + av_log(ctx, AV_LOG_FATAL, "Failed loading Process_uchar2\n"); + goto fail; + } + +fail: + CHECK_CU(cu->cuCtxPopCurrent(&bilateral)); + + return ret; +} + +static av_cold int cuda_bilateral_config_props(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + AVFilterLink *inlink = outlink->src->inputs[0]; + CUDABilateralContext *s = ctx->priv; + AVHWFramesContext *frames_ctx = (AVHWFramesContext*)inlink->hw_frames_ctx->data; + AVCUDADeviceContext *device_hwctx = frames_ctx->device_ctx->hwctx; + int ret; + + s->hwctx = device_hwctx; + s->cu_stream = s->hwctx->stream; + + ret = init_processing_chain(ctx, inlink->w, inlink->h); + if (ret < 0) + return ret; + + outlink->sample_aspect_ratio = inlink->sample_aspect_ratio; + + // the window_size makes more sense when it is odd, so add 1 if even + s->window_size= (s->window_size%2) ? s->window_size : s->window_size+1; + + ret = cuda_bilateral_load_functions(ctx); + if (ret < 0) + return ret; + + return 0; +} + +static int call_cuda_kernel(AVFilterContext *ctx, CUfunction func, + CUtexObject src_tex[3], AVFrame *out_frame, + int width, int height, int pitch, + int width_uv, int height_uv, int pitch_uv, + int window_size, float sigmaS, float sigmaR) +{ + CUDABilateralContext *s = ctx->priv; + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + int ret; + + CUdeviceptr dst_devptr[3] = { + (CUdeviceptr)out_frame->data[0], (CUdeviceptr)out_frame->data[1], (CUdeviceptr)out_frame->data[2] + }; + + void *args_uchar[] = { + &src_tex[0], &src_tex[1], &src_tex[2], + &dst_devptr[0], &dst_devptr[1], &dst_devptr[2], + &width, &height, &pitch, + &width_uv, &height_uv, &pitch_uv, + &window_size, &sigmaS, &sigmaR + }; + + ret = CHECK_CU(cu->cuLaunchKernel(func, + DIV_UP(width, BLOCKX), DIV_UP(height, BLOCKY), 1, + BLOCKX, BLOCKY, 1, 0, s->cu_stream, args_uchar, NULL)); + if (ret < 0) + return ret; + + return ret; +} + +static int cuda_bilateral_process_internal(AVFilterContext *ctx, + AVFrame *out, AVFrame *in) +{ + CUDABilateralContext *s = ctx->priv; + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + CUcontext bilateral, cuda_ctx = s->hwctx->cuda_ctx; + int i, ret; + + CUtexObject tex[3] = { 0, 0, 0 }; + + ret = CHECK_CU(cu->cuCtxPushCurrent(cuda_ctx)); + if (ret < 0) + return ret; + + for (i = 0; i < s->in_planes; i++) { + CUDA_TEXTURE_DESC tex_desc = { + .filterMode = CU_TR_FILTER_MODE_LINEAR, + .flags = 0, // CU_TRSF_READ_AS_INTEGER to get raw ints instead of normalized floats from tex2D + }; + + CUDA_RESOURCE_DESC res_desc = { + .resType = CU_RESOURCE_TYPE_PITCH2D, + .res.pitch2D.format = CU_AD_FORMAT_UNSIGNED_INT8, + .res.pitch2D.numChannels = s->in_plane_channels[i], + .res.pitch2D.pitchInBytes = in->linesize[i], + .res.pitch2D.devPtr = (CUdeviceptr)in->data[i], + }; + + if (i == 1 || i == 2) { + res_desc.res.pitch2D.width = AV_CEIL_RSHIFT(in->width, s->in_desc->log2_chroma_w); + res_desc.res.pitch2D.height = AV_CEIL_RSHIFT(in->height, s->in_desc->log2_chroma_h); + } else { + res_desc.res.pitch2D.width = in->width; + res_desc.res.pitch2D.height = in->height; + } + + ret = CHECK_CU(cu->cuTexObjectCreate(&tex[i], &res_desc, &tex_desc, NULL)); + if (ret < 0) + goto exit; + } + + ret = call_cuda_kernel(ctx, (s->in_plane_channels[1] > 1) ? s->cu_func_uv : s->cu_func, + tex, out, + out->width, out->height, out->linesize[0], + AV_CEIL_RSHIFT(out->width, s->out_desc->log2_chroma_w), + AV_CEIL_RSHIFT(out->height, s->out_desc->log2_chroma_h), + out->linesize[1] >> ((s->in_plane_channels[1] > 1) ? 1 : 0), + s->window_size, s->sigmaS, s->sigmaR); + if (ret < 0) + goto exit; + +exit: + for (i = 0; i < s->in_planes; i++) + if (tex[i]) + CHECK_CU(cu->cuTexObjectDestroy(tex[i])); + + CHECK_CU(cu->cuCtxPopCurrent(&bilateral)); + + return ret; +} + +static int cuda_bilateral_process(AVFilterContext *ctx, AVFrame *out, AVFrame *in) +{ + CUDABilateralContext *s = ctx->priv; + AVFrame *src = in; + int ret; + + ret = cuda_bilateral_process_internal(ctx, s->frame, src); + if (ret < 0) + return ret; + + src = s->frame; + ret = av_hwframe_get_buffer(src->hw_frames_ctx, s->tmp_frame, 0); + if (ret < 0) + return ret; + + av_frame_move_ref(out, s->frame); + av_frame_move_ref(s->frame, s->tmp_frame); + + ret = av_frame_copy_props(out, in); + if (ret < 0) + return ret; + + return 0; +} + +static int cuda_bilateral_filter_frame(AVFilterLink *link, AVFrame *in) +{ + AVFilterContext *ctx = link->dst; + CUDABilateralContext *s = ctx->priv; + AVFilterLink *outlink = ctx->outputs[0]; + CudaFunctions *cu = s->hwctx->internal->cuda_dl; + + AVFrame *out = NULL; + CUcontext bilateral; + int ret = 0; + + out = av_frame_alloc(); + if (!out) { + ret = AVERROR(ENOMEM); + goto fail; + } + + ret = CHECK_CU(cu->cuCtxPushCurrent(s->hwctx->cuda_ctx)); + if (ret < 0) + goto fail; + + ret = cuda_bilateral_process(ctx, out, in); + + CHECK_CU(cu->cuCtxPopCurrent(&bilateral)); + if (ret < 0) + goto fail; + + av_frame_free(&in); + return ff_filter_frame(outlink, out); +fail: + av_frame_free(&in); + av_frame_free(&out); + return ret; +} + +#define OFFSET(x) offsetof(CUDABilateralContext, x) +#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM) +static const AVOption options[] = { + { "sigmaS", "set spatial sigma", OFFSET(sigmaS), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.1, 512, FLAGS }, + { "sigmaR", "set range sigma", OFFSET(sigmaR), AV_OPT_TYPE_FLOAT, {.dbl=0.1}, 0.1, 512, FLAGS }, + { "window_size", "set neighbours window_size", OFFSET(window_size), AV_OPT_TYPE_INT, {.i64=1}, 1, 255, FLAGS }, + { NULL } +}; + +static const AVClass cuda_bilateral_class = { + .class_name = "cudabilateral", + .item_name = av_default_item_name, + .option = options, + .version = LIBAVUTIL_VERSION_INT, +}; + +static const AVFilterPad cuda_bilateral_inputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .filter_frame = cuda_bilateral_filter_frame, + }, +}; + +static const AVFilterPad cuda_bilateral_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = cuda_bilateral_config_props, + }, +}; + +const AVFilter ff_vf_bilateral_cuda = { + .name = "bilateral_cuda", + .description = NULL_IF_CONFIG_SMALL("GPU accelerated bilateral filter"), + + .init = cudabilateral_init, + .uninit = cudabilateral_uninit, + + .priv_size = sizeof(CUDABilateralContext), + .priv_class = &cuda_bilateral_class, + + FILTER_INPUTS(cuda_bilateral_inputs), + FILTER_OUTPUTS(cuda_bilateral_outputs), + + FILTER_SINGLE_PIXFMT(AV_PIX_FMT_CUDA), + + .flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, +}; |