2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #ifndef AVCODEC_NVENC_H
20 #define AVCODEC_NVENC_H
26 #include "libavutil/hwcontext_d3d11va.h"
28 typedef void ID3D11Device;
31 #include <ffnvcodec/nvEncodeAPI.h>
33 #include "compat/cuda/dynlink_loader.h"
34 #include "libavutil/fifo.h"
35 #include "libavutil/opt.h"
39 #define MAX_REGISTERED_FRAMES 64
40 #define RC_MODE_DEPRECATED 0x800000
41 #define RCD(rc_mode) ((rc_mode) | RC_MODE_DEPRECATED)
43 #define NVENCAPI_CHECK_VERSION(major, minor) \
44 ((major) < NVENCAPI_MAJOR_VERSION || ((major) == NVENCAPI_MAJOR_VERSION && (minor) <= NVENCAPI_MINOR_VERSION))
46 // SDK 8.1 compile time feature checks
47 #if NVENCAPI_CHECK_VERSION(8, 1)
48 #define NVENC_HAVE_BFRAME_REF_MODE
49 #define NVENC_HAVE_QP_MAP_MODE
52 // SDK 9.0 compile time feature checks
53 #if NVENCAPI_CHECK_VERSION(9, 0)
54 #define NVENC_HAVE_HEVC_BFRAME_REF_MODE
57 // SDK 9.1 compile time feature checks
58 #if NVENCAPI_CHECK_VERSION(9, 1)
59 #define NVENC_HAVE_MULTIPLE_REF_FRAMES
60 #define NVENC_HAVE_CUSTREAM_PTR
61 #define NVENC_HAVE_GETLASTERRORSTRING
64 typedef struct NvencSurface
66 NV_ENC_INPUT_PTR input_surface;
73 NV_ENC_OUTPUT_PTR output_surface;
74 NV_ENC_BUFFER_FORMAT format;
78 typedef struct NvencDynLoadFunctions
80 CudaFunctions *cuda_dl;
81 NvencFunctions *nvenc_dl;
83 NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
84 int nvenc_device_count;
85 } NvencDynLoadFunctions;
95 PRESET_LOW_LATENCY_DEFAULT ,
96 PRESET_LOW_LATENCY_HQ ,
97 PRESET_LOW_LATENCY_HP,
98 PRESET_LOSSLESS_DEFAULT, // lossless presets must be the last ones
103 NV_ENC_H264_PROFILE_BASELINE,
104 NV_ENC_H264_PROFILE_MAIN,
105 NV_ENC_H264_PROFILE_HIGH,
106 NV_ENC_H264_PROFILE_HIGH_444P,
110 NV_ENC_HEVC_PROFILE_MAIN,
111 NV_ENC_HEVC_PROFILE_MAIN_10,
112 NV_ENC_HEVC_PROFILE_REXT,
116 NVENC_LOWLATENCY = 1,
119 NVENC_TWO_PASSES = 8,
127 typedef struct NvencContext
131 NvencDynLoadFunctions nvenc_dload_funcs;
133 NV_ENC_INITIALIZE_PARAMS init_encode_params;
134 NV_ENC_CONFIG encode_config;
135 CUcontext cu_context;
136 CUcontext cu_context_internal;
138 ID3D11Device *d3d11_device;
141 NvencSurface *surfaces;
143 AVFifoBuffer *unused_surface_queue;
144 AVFifoBuffer *output_surface_queue;
145 AVFifoBuffer *output_surface_ready_queue;
146 AVFifoBuffer *timestamp_list;
148 int encoder_flushing;
153 NV_ENC_REGISTERED_PTR regptr;
155 NV_ENC_MAP_INPUT_RESOURCE in_map;
156 } registered_frames[MAX_REGISTERED_FRAMES];
157 int nb_registered_frames;
159 /* the actual data pixel format, different from
160 * AVCodecContext.pix_fmt when using hwaccel frames on input */
161 enum AVPixelFormat data_pix_fmt;
163 /* timestamps of the first two frames, for computing the first dts
164 * when B-frames are present */
165 int64_t initial_pts[2];
166 int first_packet_output;
168 int support_dyn_bitrate;
206 int ff_nvenc_encode_init(AVCodecContext *avctx);
208 int ff_nvenc_encode_close(AVCodecContext *avctx);
210 int ff_nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame);
212 int ff_nvenc_receive_packet(AVCodecContext *avctx, AVPacket *pkt);
214 int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
215 const AVFrame *frame, int *got_packet);
217 extern const enum AVPixelFormat ff_nvenc_pix_fmts[];
219 #endif /* AVCODEC_NVENC_H */