mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-09-04 15:28:19 +02:00
![Philip Langdale](/assets/img/avatar_default.png)
With the introduction of HEVC 444 support, we technically have two codecs that can handle 444 - HEVC and MJPEG. In the case of MJPEG, it can decode, but can only output one of the semi-planar formats. That means we need additional logic to decide whether to use a 444 output format or not.
87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
/*
|
|
* 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);
|
|
}
|
|
|
|
#if CONFIG_MJPEG_NVDEC_HWACCEL
|
|
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),
|
|
};
|
|
#endif
|