xref: /third_party/ffmpeg/libavcodec/nvdec.h (revision cabdff1a) 
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
44typedef 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
52typedef 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
71int ff_nvdec_decode_init(AVCodecContext *avctx);
72int ff_nvdec_decode_uninit(AVCodecContext *avctx);
73int ff_nvdec_start_frame(AVCodecContext *avctx, AVFrame *frame);
74int ff_nvdec_start_frame_sep_ref(AVCodecContext *avctx, AVFrame *frame, int has_sep_ref);
75int ff_nvdec_end_frame(AVCodecContext *avctx);
76int ff_nvdec_simple_end_frame(AVCodecContext *avctx);
77int ff_nvdec_simple_decode_slice(AVCodecContext *avctx, const uint8_t *buffer,
78                                 uint32_t size);
79int ff_nvdec_frame_params(AVCodecContext *avctx,
80                          AVBufferRef *hw_frames_ctx,
81                          int dpb_size,
82                          int supports_444);
83int ff_nvdec_get_ref_idx(AVFrame *frame);
84
85#endif /* AVCODEC_NVDEC_H */
86