mirror of
https://github.com/FFmpeg/FFmpeg.git
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87 lines
2.7 KiB
C
87 lines
2.7 KiB
C
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/*
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* MJPEG HW decode acceleration through NVDEC
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*
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* Copyright (c) 2017 Philip Langdale
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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
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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
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*/
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#include "avcodec.h"
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#include "internal.h"
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#include "mjpegdec.h"
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#include "nvdec.h"
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#include "decode.h"
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static int nvdec_mjpeg_start_frame(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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MJpegDecodeContext *s = avctx->priv_data;
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NVDECContext *ctx = avctx->internal->hwaccel_priv_data;
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CUVIDPICPARAMS *pp = &ctx->pic_params;
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FrameDecodeData *fdd;
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NVDECFrame *cf;
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AVFrame *cur_frame = s->picture;
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int ret;
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ret = ff_nvdec_start_frame(avctx, cur_frame);
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if (ret < 0)
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return ret;
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fdd = (FrameDecodeData*)cur_frame->private_ref->data;
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cf = (NVDECFrame*)fdd->hwaccel_priv;
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*pp = (CUVIDPICPARAMS) {
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.PicWidthInMbs = (cur_frame->width + 15) / 16,
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.FrameHeightInMbs = (cur_frame->height + 15) / 16,
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.CurrPicIdx = cf->idx,
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.intra_pic_flag = 1,
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.ref_pic_flag = 0,
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};
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return ff_nvdec_simple_decode_slice(avctx, buffer, size);
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}
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static int nvdec_mjpeg_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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return 0;
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}
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static int nvdec_mjpeg_frame_params(AVCodecContext *avctx,
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AVBufferRef *hw_frames_ctx)
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{
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// Only need storage for the current frame
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return ff_nvdec_frame_params(avctx, hw_frames_ctx, 1);
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}
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#if CONFIG_MJPEG_NVDEC_HWACCEL
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AVHWAccel ff_mjpeg_nvdec_hwaccel = {
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.name = "mjpeg_nvdec",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_MJPEG,
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.pix_fmt = AV_PIX_FMT_CUDA,
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.start_frame = nvdec_mjpeg_start_frame,
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.end_frame = ff_nvdec_simple_end_frame,
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.decode_slice = nvdec_mjpeg_decode_slice,
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.frame_params = nvdec_mjpeg_frame_params,
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.init = ff_nvdec_decode_init,
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.uninit = ff_nvdec_decode_uninit,
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.priv_data_size = sizeof(NVDECContext),
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};
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#endif
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