Commit 21f7cd4a authored by Anton Khirnov's avatar Anton Khirnov

lavfi: add a filter for uploading normal frames to CUDA

parent 1bf34134
......@@ -2382,6 +2382,7 @@ frei0r_filter_extralibs='$ldl'
frei0r_src_filter_deps="frei0r dlopen"
frei0r_src_filter_extralibs='$ldl'
hqdn3d_filter_deps="gpl"
hwupload_cuda_filter_deps="cuda"
interlace_filter_deps="gpl"
ocv_filter_deps="libopencv"
resample_filter_deps="avresample"
......
......@@ -1610,6 +1610,17 @@ A floating point number which specifies chroma temporal strength. It defaults to
@var{luma_tmp}*@var{chroma_spatial}/@var{luma_spatial}.
@end table
@section hwupload_cuda
Upload system memory frames to a CUDA device.
It accepts the following optional parameters:
@table @option
@item device
The number of the CUDA device to use
@end table
@section interlace
Simple interlacing filter from progressive contents. This interleaves upper (or
......
......@@ -56,6 +56,7 @@ OBJS-$(CONFIG_FREI0R_FILTER) += vf_frei0r.o
OBJS-$(CONFIG_GRADFUN_FILTER) += vf_gradfun.o
OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
OBJS-$(CONFIG_HWUPLOAD_CUDA_FILTER) += vf_hwupload_cuda.o
OBJS-$(CONFIG_INTERLACE_FILTER) += vf_interlace.o
OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o
......
......@@ -82,6 +82,7 @@ void avfilter_register_all(void)
REGISTER_FILTER(GRADFUN, gradfun, vf);
REGISTER_FILTER(HFLIP, hflip, vf);
REGISTER_FILTER(HQDN3D, hqdn3d, vf);
REGISTER_FILTER(HWUPLOAD_CUDA, hwupload_cuda, vf);
REGISTER_FILTER(INTERLACE, interlace, vf);
REGISTER_FILTER(LUT, lut, vf);
REGISTER_FILTER(LUTRGB, lutrgb, vf);
......
/*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/buffer.h"
#include "libavutil/hwcontext.h"
#include "libavutil/hwcontext_cuda.h"
#include "libavutil/log.h"
#include "libavutil/opt.h"
#include "avfilter.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
typedef struct CudaUploadContext {
const AVClass *class;
int device_idx;
AVBufferRef *hwdevice;
AVBufferRef *hwframe;
} CudaUploadContext;
static void cudaupload_ctx_free(AVHWDeviceContext *ctx)
{
AVCUDADeviceContext *hwctx = ctx->hwctx;
cuCtxDestroy(hwctx->cuda_ctx);
}
static av_cold int cudaupload_init(AVFilterContext *ctx)
{
CudaUploadContext *s = ctx->priv;
AVHWDeviceContext *device_ctx;
AVCUDADeviceContext *device_hwctx;
CUdevice device;
CUcontext cuda_ctx = NULL, dummy;
CUresult err;
int ret;
err = cuInit(0);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
return AVERROR_UNKNOWN;
}
err = cuDeviceGet(&device, s->device_idx);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", s->device_idx);
return AVERROR_UNKNOWN;
}
err = cuCtxCreate(&cuda_ctx, 0, device);
if (err != CUDA_SUCCESS) {
av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
return AVERROR_UNKNOWN;
}
cuCtxPopCurrent(&dummy);
s->hwdevice = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
if (!s->hwdevice) {
cuCtxDestroy(cuda_ctx);
return AVERROR(ENOMEM);
}
device_ctx = (AVHWDeviceContext*)s->hwdevice->data;
device_ctx->free = cudaupload_ctx_free;
device_hwctx = device_ctx->hwctx;
device_hwctx->cuda_ctx = cuda_ctx;
ret = av_hwdevice_ctx_init(s->hwdevice);
if (ret < 0)
return ret;
return 0;
}
static av_cold void cudaupload_uninit(AVFilterContext *ctx)
{
CudaUploadContext *s = ctx->priv;
av_buffer_unref(&s->hwframe);
av_buffer_unref(&s->hwdevice);
}
static int cudaupload_query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat input_pix_fmts[] = {
AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_NONE,
};
static const enum AVPixelFormat output_pix_fmts[] = {
AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
};
AVFilterFormats *in_fmts = ff_make_format_list(input_pix_fmts);
AVFilterFormats *out_fmts = ff_make_format_list(output_pix_fmts);
ff_formats_ref(in_fmts, &ctx->inputs[0]->out_formats);
ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
return 0;
}
static int cudaupload_config_output(AVFilterLink *outlink)
{
AVFilterContext *ctx = outlink->src;
AVFilterLink *inlink = ctx->inputs[0];
CudaUploadContext *s = ctx->priv;
AVHWFramesContext *hwframe_ctx;
int ret;
av_buffer_unref(&s->hwframe);
s->hwframe = av_hwframe_ctx_alloc(s->hwdevice);
if (!s->hwframe)
return AVERROR(ENOMEM);
hwframe_ctx = (AVHWFramesContext*)s->hwframe->data;
hwframe_ctx->format = AV_PIX_FMT_CUDA;
hwframe_ctx->sw_format = inlink->format;
hwframe_ctx->width = FFALIGN(inlink->w, 16);
hwframe_ctx->height = FFALIGN(inlink->h, 16);
ret = av_hwframe_ctx_init(s->hwframe);
if (ret < 0)
return ret;
outlink->hw_frames_ctx = av_buffer_ref(s->hwframe);
if (!outlink->hw_frames_ctx)
return AVERROR(ENOMEM);
return 0;
}
static int cudaupload_filter_frame(AVFilterLink *link, AVFrame *in)
{
AVFilterContext *ctx = link->dst;
CudaUploadContext *s = ctx->priv;
AVFrame *out = NULL;
int ret;
out = av_frame_alloc();
if (!out) {
ret = AVERROR(ENOMEM);
goto fail;
}
ret = av_hwframe_get_buffer(s->hwframe, out, 0);
if (ret < 0)
goto fail;
out->width = in->width;
out->height = in->height;
ret = av_hwframe_transfer_data(out, in, 0);
if (ret < 0) {
av_log(ctx, AV_LOG_ERROR, "Error transferring data to the GPU\n");
goto fail;
}
ret = av_frame_copy_props(out, in);
if (ret < 0)
goto fail;
av_frame_free(&in);
return ff_filter_frame(ctx->outputs[0], out);
fail:
av_frame_free(&in);
av_frame_free(&out);
return ret;
}
#define OFFSET(x) offsetof(CudaUploadContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption options[] = {
{ "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, .flags = FLAGS },
{ NULL },
};
static const AVClass cudaupload_class = {
.class_name = "cudaupload",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVFilterPad cudaupload_inputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.filter_frame = cudaupload_filter_frame,
},
{ NULL }
};
static const AVFilterPad cudaupload_outputs[] = {
{
.name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.config_props = cudaupload_config_output,
},
{ NULL }
};
AVFilter ff_vf_hwupload_cuda = {
.name = "hwupload_cuda",
.description = NULL_IF_CONFIG_SMALL("Upload a system memory frame to a CUDA device"),
.init = cudaupload_init,
.uninit = cudaupload_uninit,
.query_formats = cudaupload_query_formats,
.priv_size = sizeof(CudaUploadContext),
.priv_class = &cudaupload_class,
.inputs = cudaupload_inputs,
.outputs = cudaupload_outputs,
};
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