1 /* 2 * HW decode acceleration through NVDEC 3 * 4 * Copyright (c) 2016 Anton Khirnov 5 * 6 * This file is part of FFmpeg. 7 * 8 * FFmpeg is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Lesser General Public 10 * License as published by the Free Software Foundation; either 11 * version 2.1 of the License, or (at your option) any later version. 12 * 13 * FFmpeg is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Lesser General Public License for more details. 17 * 18 * You should have received a copy of the GNU Lesser General Public 19 * License along with FFmpeg; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 21 */ 22 23 #ifndef AVCODEC_NVDEC_H 24 #define AVCODEC_NVDEC_H 25 26 #include "compat/cuda/dynlink_loader.h" 27 28 #include <stdint.h> 29 30 #include "libavutil/buffer.h" 31 #include "libavutil/frame.h" 32 33 #include "avcodec.h" 34 35 #if defined(NVDECAPI_MAJOR_VERSION) && defined(NVDECAPI_MINOR_VERSION) 36 # define NVDECAPI_CHECK_VERSION(major, minor) \ 37 ((major) < NVDECAPI_MAJOR_VERSION || ((major) == NVDECAPI_MAJOR_VERSION && (minor) <= NVDECAPI_MINOR_VERSION)) 38 #else 39 /* version macros were added in SDK 8.1 ffnvcodec */ 40 # define NVDECAPI_CHECK_VERSION(major, minor) \ 41 ((major) < 8 || ((major) == 8 && (minor) <= 0)) 42 #endif 43 44 typedef struct NVDECFrame { 45 unsigned int idx; 46 unsigned int ref_idx; 47 AVBufferRef *idx_ref; 48 AVBufferRef *ref_idx_ref; 49 AVBufferRef *decoder_ref; 50 } NVDECFrame; 51 52 typedef struct NVDECContext { 53 CUVIDPICPARAMS pic_params; 54 55 AVBufferPool *decoder_pool; 56 57 AVBufferRef *decoder_ref; 58 59 uint8_t *bitstream; 60 int bitstream_len; 61 unsigned int bitstream_allocated; 62 uint8_t *bitstream_internal; 63 64 unsigned *slice_offsets; 65 int nb_slices; 66 unsigned int slice_offsets_allocated; 67 68 int supports_444; 69 } NVDECContext; 70 71 int ff_nvdec_decode_init(AVCodecContext *avctx); 72 int ff_nvdec_decode_uninit(AVCodecContext *avctx); 73 int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame); 74 int ff_nvdec_start_frame_sep_ref(AVCodecContext *avctx, AVFrame *frame, int has_sep_ref); 75 int ff_nvdec_end_frame(AVCodecContext *avctx); 76 int ff_nvdec_simple_end_frame(AVCodecContext *avctx); 77 int ff_nvdec_simple_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, 78 uint32_t size); 79 int ff_nvdec_frame_params(AVCodecContext *avctx, 80 AVBufferRef *hw_frames_ctx, 81 int dpb_size, 82 int supports_444); 83 int ff_nvdec_get_ref_idx(AVFrame *frame); 84 85 #endif /* AVCODEC_NVDEC_H */ 86