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/* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* 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.
* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* 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 |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/buffer.h"
#include "libavutil/hwcontext.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 av_cold int cudaupload_init(AVFilterContext *ctx)
{
CudaUploadContext *s = ctx->priv; |
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char buf[64] = { 0 }; |
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|
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snprintf(buf, sizeof(buf), "%d", s->device_idx); |
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|
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return av_hwdevice_ctx_create(&s->hwdevice, AV_HWDEVICE_TYPE_CUDA, buf, NULL, 0); |
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}
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)
{ |
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int ret;
|
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static const enum AVPixelFormat input_pix_fmts[] = {
AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P, |
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AV_PIX_FMT_P010, AV_PIX_FMT_P016, AV_PIX_FMT_YUV444P16, |
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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); |
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AVFilterFormats *out_fmts; |
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|
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ret = ff_formats_ref(in_fmts, &ctx->inputs[0]->out_formats);
if (ret < 0)
return ret;
|
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out_fmts = ff_make_format_list(output_pix_fmts);
|
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ret = ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
if (ret < 0)
return ret; |
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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; |
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hwframe_ctx->width = inlink->w;
hwframe_ctx->height = inlink->h; |
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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; |
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AVFilterLink *outlink = ctx->outputs[0]; |
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AVFrame *out = NULL;
int ret;
|
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out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
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if (!out) {
ret = AVERROR(ENOMEM);
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) |
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#define FLAGS (AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM)
static const AVOption cudaupload_options[] = { |
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{ "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS }, |
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{ NULL },
};
|
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AVFILTER_DEFINE_CLASS(cudaupload); |
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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", |
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.description = NULL_IF_CONFIG_SMALL("Upload a system memory frame to a CUDA device."), |
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.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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.flags_internal = FF_FILTER_FLAG_HWFRAME_AWARE, |
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}; |