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 typedef struct NvencSurface
59 NV_ENC_INPUT_PTR input_surface;
66 NV_ENC_OUTPUT_PTR output_surface;
67 NV_ENC_BUFFER_FORMAT format;
71 typedef struct NvencDynLoadFunctions
73 CudaFunctions *cuda_dl;
74 NvencFunctions *nvenc_dl;
76 NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
77 int nvenc_device_count;
78 } NvencDynLoadFunctions;
88 PRESET_LOW_LATENCY_DEFAULT ,
89 PRESET_LOW_LATENCY_HQ ,
90 PRESET_LOW_LATENCY_HP,
91 PRESET_LOSSLESS_DEFAULT, // lossless presets must be the last ones
96 NV_ENC_H264_PROFILE_BASELINE,
97 NV_ENC_H264_PROFILE_MAIN,
98 NV_ENC_H264_PROFILE_HIGH,
99 NV_ENC_H264_PROFILE_HIGH_444P,
103 NV_ENC_HEVC_PROFILE_MAIN,
104 NV_ENC_HEVC_PROFILE_MAIN_10,
105 NV_ENC_HEVC_PROFILE_REXT,
109 NVENC_LOWLATENCY = 1,
112 NVENC_TWO_PASSES = 8,
120 typedef struct NvencContext
124 NvencDynLoadFunctions nvenc_dload_funcs;
126 NV_ENC_INITIALIZE_PARAMS init_encode_params;
127 NV_ENC_CONFIG encode_config;
128 CUcontext cu_context;
129 CUcontext cu_context_internal;
130 ID3D11Device *d3d11_device;
133 NvencSurface *surfaces;
135 AVFifoBuffer *unused_surface_queue;
136 AVFifoBuffer *output_surface_queue;
137 AVFifoBuffer *output_surface_ready_queue;
138 AVFifoBuffer *timestamp_list;
140 int encoder_flushing;
145 NV_ENC_REGISTERED_PTR regptr;
147 NV_ENC_MAP_INPUT_RESOURCE in_map;
148 } registered_frames[MAX_REGISTERED_FRAMES];
149 int nb_registered_frames;
151 /* the actual data pixel format, different from
152 * AVCodecContext.pix_fmt when using hwaccel frames on input */
153 enum AVPixelFormat data_pix_fmt;
155 /* timestamps of the first two frames, for computing the first dts
156 * when B-frames are present */
157 int64_t initial_pts[2];
158 int first_packet_output;
160 int support_dyn_bitrate;
197 int ff_nvenc_encode_init(AVCodecContext *avctx);
199 int ff_nvenc_encode_close(AVCodecContext *avctx);
201 int ff_nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame);
203 int ff_nvenc_receive_packet(AVCodecContext *avctx, AVPacket *pkt);
205 int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
206 const AVFrame *frame, int *got_packet);
208 extern const enum AVPixelFormat ff_nvenc_pix_fmts[];
210 #endif /* AVCODEC_NVENC_H */