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 typedef struct NvencSurface
54 NV_ENC_INPUT_PTR input_surface;
61 NV_ENC_OUTPUT_PTR output_surface;
62 NV_ENC_BUFFER_FORMAT format;
66 typedef struct NvencDynLoadFunctions
68 CudaFunctions *cuda_dl;
69 NvencFunctions *nvenc_dl;
71 NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
72 int nvenc_device_count;
73 } NvencDynLoadFunctions;
83 PRESET_LOW_LATENCY_DEFAULT ,
84 PRESET_LOW_LATENCY_HQ ,
85 PRESET_LOW_LATENCY_HP,
86 PRESET_LOSSLESS_DEFAULT, // lossless presets must be the last ones
91 NV_ENC_H264_PROFILE_BASELINE,
92 NV_ENC_H264_PROFILE_MAIN,
93 NV_ENC_H264_PROFILE_HIGH,
94 NV_ENC_H264_PROFILE_HIGH_444P,
98 NV_ENC_HEVC_PROFILE_MAIN,
99 NV_ENC_HEVC_PROFILE_MAIN_10,
100 NV_ENC_HEVC_PROFILE_REXT,
104 NVENC_LOWLATENCY = 1,
107 NVENC_TWO_PASSES = 8,
115 typedef struct NvencContext
119 NvencDynLoadFunctions nvenc_dload_funcs;
121 NV_ENC_INITIALIZE_PARAMS init_encode_params;
122 NV_ENC_CONFIG encode_config;
123 CUcontext cu_context;
124 CUcontext cu_context_internal;
125 ID3D11Device *d3d11_device;
128 NvencSurface *surfaces;
130 AVFifoBuffer *unused_surface_queue;
131 AVFifoBuffer *output_surface_queue;
132 AVFifoBuffer *output_surface_ready_queue;
133 AVFifoBuffer *timestamp_list;
135 int encoder_flushing;
140 NV_ENC_REGISTERED_PTR regptr;
142 NV_ENC_MAP_INPUT_RESOURCE in_map;
143 } registered_frames[MAX_REGISTERED_FRAMES];
144 int nb_registered_frames;
146 /* the actual data pixel format, different from
147 * AVCodecContext.pix_fmt when using hwaccel frames on input */
148 enum AVPixelFormat data_pix_fmt;
150 /* timestamps of the first two frames, for computing the first dts
151 * when B-frames are present */
152 int64_t initial_pts[2];
153 int first_packet_output;
189 int ff_nvenc_encode_init(AVCodecContext *avctx);
191 int ff_nvenc_encode_close(AVCodecContext *avctx);
193 int ff_nvenc_send_frame(AVCodecContext *avctx, const AVFrame *frame);
195 int ff_nvenc_receive_packet(AVCodecContext *avctx, AVPacket *pkt);
197 int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
198 const AVFrame *frame, int *got_packet);
200 extern const enum AVPixelFormat ff_nvenc_pix_fmts[];
202 #endif /* AVCODEC_NVENC_H */