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/*
* MJPEG HW decode acceleration through NVDEC
*
* Copyright (c) 2017 Philip Langdale
*
* 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 "avcodec.h"
#include "internal.h"
#include "mjpegdec.h"
#include "nvdec.h"
#include "decode.h"
static int nvdec_mjpeg_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
MJpegDecodeContext *s = avctx->priv_data;
NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
CUVIDPICPARAMS *pp = &ctx->pic_params;
FrameDecodeData *fdd;
NVDECFrame *cf;
AVFrame *cur_frame = s->picture;
int ret;
ret = ff_nvdec_start_frame(avctx, cur_frame);
if (ret < 0)
return ret;
fdd = (FrameDecodeData*)cur_frame->private_ref->data;
cf = (NVDECFrame*)fdd->hwaccel_priv;
*pp = (CUVIDPICPARAMS) {
.PicWidthInMbs = (cur_frame->width + 15) / 16,
.FrameHeightInMbs = (cur_frame->height + 15) / 16,
.CurrPicIdx = cf->idx,
.intra_pic_flag = 1,
.ref_pic_flag = 0,
};
return ff_nvdec_simple_decode_slice(avctx, buffer, size);
}
static int nvdec_mjpeg_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
return 0;
}
static int nvdec_mjpeg_frame_params(AVCodecContext *avctx,
AVBufferRef *hw_frames_ctx)
{
// Only need storage for the current frame
return ff_nvdec_frame_params(avctx, hw_frames_ctx, 1, 0);
}
const AVHWAccel ff_mjpeg_nvdec_hwaccel = {
.name = "mjpeg_nvdec",
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_MJPEG,
.pix_fmt = AV_PIX_FMT_CUDA,
.start_frame = nvdec_mjpeg_start_frame,
.end_frame = ff_nvdec_simple_end_frame,
.decode_slice = nvdec_mjpeg_decode_slice,
.frame_params = nvdec_mjpeg_frame_params,
.init = ff_nvdec_decode_init,
.uninit = ff_nvdec_decode_uninit,
.priv_data_size = sizeof(NVDECContext),
};
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