mirror of https://github.com/FFmpeg/FFmpeg.git
Anton Khirnov
9 years ago
parent
1bf3413461
commit
21f7cd4acd
5 changed files with 251 additions and 0 deletions
@ -0,0 +1,237 @@ |
||||
/*
|
||||
* 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, |
||||
}; |
||||
Loading…
Reference in new issue