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"
40 #define MAX_REGISTERED_FRAMES 64
41 #define RC_MODE_DEPRECATED 0x800000
42 #define RCD(rc_mode) ((rc_mode) | RC_MODE_DEPRECATED)
44 #define NVENCAPI_CHECK_VERSION(major, minor) \
45 ((major) < NVENCAPI_MAJOR_VERSION || ((major) == NVENCAPI_MAJOR_VERSION && (minor) <= NVENCAPI_MINOR_VERSION))
47 // SDK 8.1 compile time feature checks
48 #if NVENCAPI_CHECK_VERSION(8, 1)
49 #define NVENC_HAVE_BFRAME_REF_MODE
50 #define NVENC_HAVE_QP_MAP_MODE
53 // SDK 9.0 compile time feature checks
54 #if NVENCAPI_CHECK_VERSION(9, 0)
55 #define NVENC_HAVE_HEVC_BFRAME_REF_MODE
58 // SDK 9.1 compile time feature checks
59 #if NVENCAPI_CHECK_VERSION(9, 1)
60 #define NVENC_HAVE_MULTIPLE_REF_FRAMES
61 #define NVENC_HAVE_CUSTREAM_PTR
62 #define NVENC_HAVE_GETLASTERRORSTRING
65 typedef struct NvencSurface
67 NV_ENC_INPUT_PTR input_surface;
74 NV_ENC_OUTPUT_PTR output_surface;
75 NV_ENC_BUFFER_FORMAT format;
79 typedef struct NvencDynLoadFunctions
81 CudaFunctions *cuda_dl;
82 NvencFunctions *nvenc_dl;
84 NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
85 int nvenc_device_count;
86 } NvencDynLoadFunctions;
96 PRESET_LOW_LATENCY_DEFAULT ,
97 PRESET_LOW_LATENCY_HQ ,
98 PRESET_LOW_LATENCY_HP,
99 PRESET_LOSSLESS_DEFAULT, // lossless presets must be the last ones
104 NV_ENC_H264_PROFILE_BASELINE,
105 NV_ENC_H264_PROFILE_MAIN,
106 NV_ENC_H264_PROFILE_HIGH,
107 NV_ENC_H264_PROFILE_HIGH_444P,
111 NV_ENC_HEVC_PROFILE_MAIN,
112 NV_ENC_HEVC_PROFILE_MAIN_10,
113 NV_ENC_HEVC_PROFILE_REXT,
117 NVENC_LOWLATENCY = 1,
120 NVENC_TWO_PASSES = 8,
128 typedef struct NvencContext
132 NvencDynLoadFunctions nvenc_dload_funcs;
134 NV_ENC_INITIALIZE_PARAMS init_encode_params;
135 NV_ENC_CONFIG encode_config;
136 CUcontext cu_context;
137 CUcontext cu_context_internal;
139 ID3D11Device *d3d11_device;
142 NvencSurface *surfaces;
144 AVFifoBuffer *unused_surface_queue;
145 AVFifoBuffer *output_surface_queue;
146 AVFifoBuffer *output_surface_ready_queue;
147 AVFifoBuffer *timestamp_list;
149 int encoder_flushing;
154 NV_ENC_REGISTERED_PTR regptr;
156 NV_ENC_MAP_INPUT_RESOURCE in_map;
157 } registered_frames[MAX_REGISTERED_FRAMES];
158 int nb_registered_frames;
160 /* the actual data pixel format, different from
161 * AVCodecContext.pix_fmt when using hwaccel frames on input */
162 enum AVPixelFormat data_pix_fmt;
164 /* timestamps of the first two frames, for computing the first dts
165 * when B-frames are present */
166 int64_t initial_pts[2];
167 int first_packet_output;
169 int support_dyn_bitrate;
207 int ff_nvenc_encode_init(AVCodecContext *avctx);
209 int ff_nvenc_encode_close(AVCodecContext *avctx);
211 int ff_nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame);
213 int ff_nvenc_receive_packet(AVCodecContext *avctx, AVPacket *pkt);
215 int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
216 const AVFrame *frame, int *got_packet);
218 void ff_nvenc_encode_flush(AVCodecContext *avctx);
220 extern const enum AVPixelFormat ff_nvenc_pix_fmts[];
221 extern const AVCodecHWConfigInternal *ff_nvenc_hw_configs[];
223 #endif /* AVCODEC_NVENC_H */