| /* |
| * 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/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_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM) |
| static const AVOption cudaupload_options[] = { |
| { "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(cudaupload); |
| |
| 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, |
| }; |