| /* |
| * 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 |