2 * This file is part of Libav.
4 * Libav 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 * Libav 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 Libav; 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
22 #include <nvEncodeAPI.h>
26 #include "libavutil/fifo.h"
27 #include "libavutil/opt.h"
36 #define CUDAAPI __stdcall
41 typedef enum cudaError_enum {
45 typedef void* CUcontext;
46 typedef void* CUdeviceptr;
49 #define MAX_REGISTERED_FRAMES 64
51 typedef struct NVENCFrame {
54 NV_ENC_MAP_INPUT_RESOURCE in_map;
57 NV_ENC_OUTPUT_PTR out;
58 NV_ENC_BUFFER_FORMAT format;
62 typedef CUresult(CUDAAPI *PCUINIT)(unsigned int Flags);
63 typedef CUresult(CUDAAPI *PCUDEVICEGETCOUNT)(int *count);
64 typedef CUresult(CUDAAPI *PCUDEVICEGET)(CUdevice *device, int ordinal);
65 typedef CUresult(CUDAAPI *PCUDEVICEGETNAME)(char *name, int len, CUdevice dev);
66 typedef CUresult(CUDAAPI *PCUDEVICECOMPUTECAPABILITY)(int *major, int *minor, CUdevice dev);
67 typedef CUresult(CUDAAPI *PCUCTXCREATE)(CUcontext *pctx, unsigned int flags, CUdevice dev);
68 typedef CUresult(CUDAAPI *PCUCTXPOPCURRENT)(CUcontext *pctx);
69 typedef CUresult(CUDAAPI *PCUCTXPUSHCURRENT)(CUcontext ctx);
70 typedef CUresult(CUDAAPI *PCUCTXDESTROY)(CUcontext ctx);
72 typedef NVENCSTATUS (NVENCAPI *PNVENCODEAPICREATEINSTANCE)(NV_ENCODE_API_FUNCTION_LIST *functionList);
74 typedef struct NVENCLibraryContext
82 PCUDEVICEGETCOUNT cu_device_get_count;
83 PCUDEVICEGET cu_device_get;
84 PCUDEVICEGETNAME cu_device_get_name;
85 PCUDEVICECOMPUTECAPABILITY cu_device_compute_capability;
86 PCUCTXCREATE cu_ctx_create;
87 PCUCTXPOPCURRENT cu_ctx_pop_current;
88 PCUCTXPUSHCURRENT cu_ctx_push_current;
89 PCUCTXDESTROY cu_ctx_destroy;
91 NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
92 } NVENCLibraryContext;
102 PRESET_LOW_LATENCY_DEFAULT ,
103 PRESET_LOW_LATENCY_HQ ,
104 PRESET_LOW_LATENCY_HP,
105 PRESET_LOSSLESS_DEFAULT,
110 NV_ENC_H264_PROFILE_BASELINE,
111 NV_ENC_H264_PROFILE_MAIN,
112 NV_ENC_H264_PROFILE_HIGH,
113 NV_ENC_H264_PROFILE_HIGH_444,
114 NV_ENC_H264_PROFILE_CONSTRAINED_HIGH,
118 NV_ENC_HEVC_PROFILE_MAIN,
119 NV_ENC_HEVC_PROFILE_MAIN_10,
120 NV_ENC_HEVC_PROFILE_REXT,
124 NVENC_LOWLATENCY = 1,
127 NVENC_TWO_PASSES = 8,
135 typedef struct NVENCContext {
137 NVENCLibraryContext nvel;
139 NV_ENC_INITIALIZE_PARAMS params;
140 NV_ENC_CONFIG config;
142 CUcontext cu_context;
143 CUcontext cu_context_internal;
147 AVFifoBuffer *timestamps;
148 AVFifoBuffer *pending, *ready;
152 NV_ENC_REGISTERED_PTR regptr;
154 } registered_frames[MAX_REGISTERED_FRAMES];
155 int nb_registered_frames;
157 /* the actual data pixel format, different from
158 * AVCodecContext.pix_fmt when using hwaccel frames on input */
159 enum AVPixelFormat data_pix_fmt;
161 /* timestamps of the first two frames, for computing the first dts
162 * when B-frames are present */
163 int64_t initial_pts[2];
164 int first_packet_output;
191 int ff_nvenc_encode_init(AVCodecContext *avctx);
193 int ff_nvenc_encode_close(AVCodecContext *avctx);
195 int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
196 const AVFrame *frame, int *got_packet);
198 extern const enum AVPixelFormat ff_nvenc_pix_fmts[];
200 #endif /* AVCODEC_NVENC_H */