nvenc: H264 and HEVC encoders
[libav.git] / libavcodec / nvenc.c
CommitLineData
b08caa87
LB
1/*
2 * NVIDIA NVENC Support
3 * Copyright (C) 2015 Luca Barbato
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include "config.h"
23
24#include <cuda.h>
25#include <nvEncodeAPI.h>
26#include <string.h>
27
28#define CUDA_LIBNAME "libcuda.so"
29
30#if HAVE_DLFCN_H
31#include <dlfcn.h>
32
33#define NVENC_LIBNAME "libnvidia-encode.so"
34
35#elif HAVE_WINDOWS_H
36#include <windows.h>
37
38#if ARCH_X86_64
39#define NVENC_LIBNAME "nvEncodeAPI64.dll"
40#else
41#define NVENC_LIBNAME "nvEncodeAPI.dll"
42#endif
43
44#define dlopen(filename, flags) LoadLibrary((filename))
45#define dlsym(handle, symbol) GetProcAddress(handle, symbol)
46#define dlclose(handle) FreeLibrary(handle)
47#endif
48
49#include "libavutil/common.h"
50#include "libavutil/imgutils.h"
51#include "libavutil/mem.h"
52#include "avcodec.h"
53#include "internal.h"
54#include "nvenc.h"
55
56#define NVENC_CAP 0x30
57#define BITSTREAM_BUFFER_SIZE 1024 * 1024
58
59#define LOAD_LIBRARY(l, path) \
60 do { \
61 if (!((l) = dlopen(path, RTLD_LAZY))) { \
62 av_log(avctx, AV_LOG_ERROR, \
63 "Cannot load %s\n", \
64 path); \
65 return AVERROR_UNKNOWN; \
66 } \
67 } while (0)
68
69#define LOAD_SYMBOL(fun, lib, symbol) \
70 do { \
71 if (!((fun) = dlsym(lib, symbol))) { \
72 av_log(avctx, AV_LOG_ERROR, \
73 "Cannot load %s\n", \
74 symbol); \
75 return AVERROR_UNKNOWN; \
76 } \
77 } while (0)
78
79static av_cold int nvenc_load_libraries(AVCodecContext *avctx)
80{
81 NVENCContext *ctx = avctx->priv_data;
82 NVENCLibraryContext *nvel = &ctx->nvel;
83 PNVENCODEAPICREATEINSTANCE nvenc_create_instance;
84
85 LOAD_LIBRARY(nvel->cuda, CUDA_LIBNAME);
86
87 LOAD_SYMBOL(nvel->cu_init, nvel->cuda, "cuInit");
88 LOAD_SYMBOL(nvel->cu_device_get_count, nvel->cuda, "cuDeviceGetCount");
89 LOAD_SYMBOL(nvel->cu_device_get, nvel->cuda, "cuDeviceGet");
90 LOAD_SYMBOL(nvel->cu_device_get_name, nvel->cuda, "cuDeviceGetName");
91 LOAD_SYMBOL(nvel->cu_device_compute_capability, nvel->cuda,
92 "cuDeviceComputeCapability");
93 LOAD_SYMBOL(nvel->cu_ctx_create, nvel->cuda, "cuCtxCreate_v2");
94 LOAD_SYMBOL(nvel->cu_ctx_pop_current, nvel->cuda, "cuCtxPopCurrent_v2");
95 LOAD_SYMBOL(nvel->cu_ctx_destroy, nvel->cuda, "cuCtxDestroy_v2");
96
97 LOAD_LIBRARY(nvel->nvenc, NVENC_LIBNAME);
98
99 LOAD_SYMBOL(nvenc_create_instance, nvel->nvenc,
100 "NvEncodeAPICreateInstance");
101
102 nvel->nvenc_funcs.version = NV_ENCODE_API_FUNCTION_LIST_VER;
103
104 if ((nvenc_create_instance(&nvel->nvenc_funcs)) != NV_ENC_SUCCESS) {
105 av_log(avctx, AV_LOG_ERROR, "Cannot create the NVENC instance");
106 return AVERROR_UNKNOWN;
107 }
108
109 return 0;
110}
111
112static int nvenc_open_session(AVCodecContext *avctx)
113{
114 NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params = { 0 };
115 NVENCContext *ctx = avctx->priv_data;
116 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
117 int ret;
118
119 params.version = NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER;
120 params.apiVersion = NVENCAPI_VERSION;
121 params.device = ctx->cu_context;
122 params.deviceType = NV_ENC_DEVICE_TYPE_CUDA;
123
124 ret = nv->nvEncOpenEncodeSessionEx(&params, &ctx->nvenc_ctx);
125 if (ret != NV_ENC_SUCCESS) {
126 ctx->nvenc_ctx = NULL;
127 av_log(avctx, AV_LOG_ERROR,
128 "Cannot open the NVENC Session\n");
129 return AVERROR_UNKNOWN;
130 }
131
132 return 0;
133}
134
135static int nvenc_check_codec_support(AVCodecContext *avctx)
136{
137 NVENCContext *ctx = avctx->priv_data;
138 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
139 int i, ret, count = 0;
140 GUID *guids = NULL;
141
142 ret = nv->nvEncGetEncodeGUIDCount(ctx->nvenc_ctx, &count);
143
144 if (ret != NV_ENC_SUCCESS || !count)
145 return AVERROR(ENOSYS);
146
147 guids = av_malloc(count * sizeof(GUID));
148 if (!guids)
149 return AVERROR(ENOMEM);
150
151 ret = nv->nvEncGetEncodeGUIDs(ctx->nvenc_ctx, guids, count, &count);
152 if (ret != NV_ENC_SUCCESS) {
153 ret = AVERROR(ENOSYS);
154 goto fail;
155 }
156
157 ret = AVERROR(ENOSYS);
158 for (i = 0; i < count; i++) {
159 if (!memcmp(&guids[i], &ctx->params.encodeGUID, sizeof(*guids))) {
160 ret = 0;
161 break;
162 }
163 }
164
165fail:
166 av_free(guids);
167
168 return ret;
169}
170
171static int nvenc_check_cap(AVCodecContext *avctx, NV_ENC_CAPS cap)
172{
173 NVENCContext *ctx = avctx->priv_data;
174 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
175 NV_ENC_CAPS_PARAM params = { 0 };
176 int ret, val = 0;
177
178 params.version = NV_ENC_CAPS_PARAM_VER;
179 params.capsToQuery = cap;
180
181 ret = nv->nvEncGetEncodeCaps(ctx->nvenc_ctx, ctx->params.encodeGUID, &params, &val);
182
183 if (ret == NV_ENC_SUCCESS)
184 return val;
185 return 0;
186}
187
188static int nvenc_check_capabilities(AVCodecContext *avctx)
189{
190 int ret;
191
192 ret = nvenc_check_codec_support(avctx);
193 if (ret < 0) {
194 av_log(avctx, AV_LOG_VERBOSE, "Codec not supported\n");
195 return ret;
196 }
197
198 ret = nvenc_check_cap(avctx, NV_ENC_CAPS_SUPPORT_YUV444_ENCODE);
199 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P && ret <= 0) {
200 av_log(avctx, AV_LOG_VERBOSE, "YUV444P not supported\n");
201 return AVERROR(ENOSYS);
202 }
203
204 ret = nvenc_check_cap(avctx, NV_ENC_CAPS_WIDTH_MAX);
205 if (ret < avctx->width) {
206 av_log(avctx, AV_LOG_VERBOSE, "Width %d exceeds %d\n",
207 avctx->width, ret);
208 return AVERROR(ENOSYS);
209 }
210
211 ret = nvenc_check_cap(avctx, NV_ENC_CAPS_HEIGHT_MAX);
212 if (ret < avctx->height) {
213 av_log(avctx, AV_LOG_VERBOSE, "Height %d exceeds %d\n",
214 avctx->height, ret);
215 return AVERROR(ENOSYS);
216 }
217
218 ret = nvenc_check_cap(avctx, NV_ENC_CAPS_NUM_MAX_BFRAMES);
219 if (ret < avctx->max_b_frames) {
220 av_log(avctx, AV_LOG_VERBOSE, "Max b-frames %d exceed %d\n",
221 avctx->max_b_frames, ret);
222
223 return AVERROR(ENOSYS);
224 }
225
226 return 0;
227}
228
229static int nvenc_check_device(AVCodecContext *avctx, int idx)
230{
231 NVENCContext *ctx = avctx->priv_data;
232 NVENCLibraryContext *nvel = &ctx->nvel;
233 char name[128] = { 0 };
234 int major, minor, ret;
235 CUdevice cu_device;
236 CUcontext dummy;
237 int loglevel = AV_LOG_VERBOSE;
238
239 if (ctx->device == LIST_DEVICES)
240 loglevel = AV_LOG_INFO;
241
242 ret = nvel->cu_device_get(&cu_device, idx);
243 if (ret != CUDA_SUCCESS) {
244 av_log(avctx, AV_LOG_ERROR,
245 "Cannot access the CUDA device %d\n",
246 idx);
247 return -1;
248 }
249
250 ret = nvel->cu_device_get_name(name, sizeof(name), cu_device);
251 if (ret != CUDA_SUCCESS)
252 return -1;
253
254 ret = nvel->cu_device_compute_capability(&major, &minor, cu_device);
255 if (ret != CUDA_SUCCESS)
256 return -1;
257
258 av_log(avctx, loglevel, "Device %d [%s] ", cu_device, name);
259
260 if (((major << 4) | minor) < NVENC_CAP)
261 goto fail;
262
263 ret = nvel->cu_ctx_create(&ctx->cu_context, 0, cu_device);
264 if (ret != CUDA_SUCCESS)
265 goto fail;
266
267 ret = nvel->cu_ctx_pop_current(&dummy);
268 if (ret != CUDA_SUCCESS)
269 goto fail2;
270
271 if ((ret = nvenc_open_session(avctx)) < 0)
272 goto fail2;
273
274 if ((ret = nvenc_check_capabilities(avctx)) < 0)
275 goto fail3;
276
277 av_log(avctx, loglevel, "supports NVENC\n");
278
279 if (ctx->device == cu_device || ctx->device == ANY_DEVICE)
280 return 0;
281
282fail3:
283 nvel->nvenc_funcs.nvEncDestroyEncoder(ctx->nvenc_ctx);
284 ctx->nvenc_ctx = NULL;
285
286fail2:
287 nvel->cu_ctx_destroy(ctx->cu_context);
288 ctx->cu_context = NULL;
289
290fail:
291 if (ret != 0)
292 av_log(avctx, loglevel, "does not support NVENC (major %d minor %d)\n",
293 major, minor);
294
295 return AVERROR(ENOSYS);
296}
297
298static int nvenc_setup_device(AVCodecContext *avctx)
299{
300 NVENCContext *ctx = avctx->priv_data;
301 NVENCLibraryContext *nvel = &ctx->nvel;
302 int i, nb_devices = 0;
303
304 if ((nvel->cu_init(0)) != CUDA_SUCCESS) {
305 av_log(avctx, AV_LOG_ERROR,
306 "Cannot init CUDA\n");
307 return AVERROR_UNKNOWN;
308 }
309
310 if ((nvel->cu_device_get_count(&nb_devices)) != CUDA_SUCCESS) {
311 av_log(avctx, AV_LOG_ERROR,
312 "Cannot enumerate the CUDA devices\n");
313 return AVERROR_UNKNOWN;
314 }
315
316 switch (avctx->codec->id) {
317 case AV_CODEC_ID_H264:
318 ctx->params.encodeGUID = NV_ENC_CODEC_H264_GUID;
319 break;
320 case AV_CODEC_ID_HEVC:
321 ctx->params.encodeGUID = NV_ENC_CODEC_HEVC_GUID;
322 break;
323 default:
324 return AVERROR_BUG;
325 }
326
327 for (i = 0; i < nb_devices; ++i) {
328 if ((nvenc_check_device(avctx, i)) >= 0 && ctx->device != LIST_DEVICES)
329 return 0;
330 }
331
332 if (ctx->device == LIST_DEVICES)
333 return AVERROR_EXIT;
334
335 return AVERROR(ENOSYS);
336}
337
338typedef struct GUIDTuple {
339 const GUID guid;
340 int flags;
341} GUIDTuple;
342
343static int nvec_map_preset(NVENCContext *ctx)
344{
345 GUIDTuple presets[] = {
346 { NV_ENC_PRESET_DEFAULT_GUID },
347 { NV_ENC_PRESET_HP_GUID },
348 { NV_ENC_PRESET_HQ_GUID },
349 { NV_ENC_PRESET_BD_GUID },
350 { NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID, NVENC_LOWLATENCY },
351 { NV_ENC_PRESET_LOW_LATENCY_HP_GUID, NVENC_LOWLATENCY },
352 { NV_ENC_PRESET_LOW_LATENCY_HQ_GUID, NVENC_LOWLATENCY },
353 { NV_ENC_PRESET_LOSSLESS_DEFAULT_GUID, NVENC_LOSSLESS },
354 { NV_ENC_PRESET_LOSSLESS_HP_GUID, NVENC_LOSSLESS },
355 { { 0 } }
356 };
357
358 GUIDTuple *t = &presets[ctx->preset];
359
360 ctx->params.presetGUID = t->guid;
361 ctx->flags = t->flags;
362
363 return AVERROR(EINVAL);
364}
365
366static void set_constqp(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
367{
368 rc->rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
369 rc->constQP.qpInterB = avctx->global_quality;
370 rc->constQP.qpInterP = avctx->global_quality;
371 rc->constQP.qpIntra = avctx->global_quality;
372}
373
374static void set_vbr(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
375{
376 if (avctx->qmin >= 0) {
377 rc->enableMinQP = 1;
378 rc->minQP.qpInterB = avctx->qmin;
379 rc->minQP.qpInterP = avctx->qmin;
380 rc->minQP.qpIntra = avctx->qmin;
381 }
382
383 if (avctx->qmax >= 0) {
384 rc->enableMaxQP = 1;
385 rc->maxQP.qpInterB = avctx->qmax;
386 rc->maxQP.qpInterP = avctx->qmax;
387 rc->maxQP.qpIntra = avctx->qmax;
388 }
389}
390
391static void nvenc_override_rate_control(AVCodecContext *avctx,
392 NV_ENC_RC_PARAMS *rc)
393{
394 NVENCContext *ctx = avctx->priv_data;
395
396 switch (ctx->rc) {
397 case NV_ENC_PARAMS_RC_CONSTQP:
398 if (avctx->global_quality < 0) {
399 av_log(avctx, AV_LOG_WARNING,
400 "The constant quality rate-control requires "
401 "the 'global_quality' option set.\n");
402 return;
403 }
404 set_constqp(avctx, rc);
405 return;
406 case NV_ENC_PARAMS_RC_2_PASS_VBR:
407 case NV_ENC_PARAMS_RC_VBR:
408 if (avctx->qmin < 0 && avctx->qmax < 0) {
409 av_log(avctx, AV_LOG_WARNING,
410 "The variable bitrate rate-control requires "
411 "the 'qmin' and/or 'qmax' option set.\n");
412 return;
413 }
414 case NV_ENC_PARAMS_RC_VBR_MINQP:
415 if (avctx->qmin < 0) {
416 av_log(avctx, AV_LOG_WARNING,
417 "The variable bitrate rate-control requires "
418 "the 'qmin' option set.\n");
419 return;
420 }
421 set_vbr(avctx, rc);
422 break;
423 case NV_ENC_PARAMS_RC_CBR:
424 break;
425 case NV_ENC_PARAMS_RC_2_PASS_QUALITY:
426 case NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP:
427 if (!(ctx->flags & NVENC_LOWLATENCY)) {
428 av_log(avctx, AV_LOG_WARNING,
429 "The multipass rate-control requires "
430 "a low-latency preset.\n");
431 return;
432 }
433 }
434
435 rc->rateControlMode = ctx->rc;
436}
437
438static void nvenc_setup_rate_control(AVCodecContext *avctx)
439{
440 NVENCContext *ctx = avctx->priv_data;
441 NV_ENC_RC_PARAMS *rc = &ctx->config.rcParams;
442
443 if (avctx->bit_rate > 0)
444 rc->averageBitRate = avctx->bit_rate;
445
446 if (avctx->rc_max_rate > 0)
447 rc->maxBitRate = avctx->rc_max_rate;
448
449 if (ctx->rc > 0) {
450 nvenc_override_rate_control(avctx, rc);
451 } else if (avctx->global_quality > 0) {
452 set_constqp(avctx, rc);
453 } else if (avctx->qmin >= 0 && avctx->qmax >= 0) {
454 rc->rateControlMode = NV_ENC_PARAMS_RC_VBR;
455 set_vbr(avctx, rc);
456 }
457
458 if (avctx->rc_buffer_size > 0)
459 rc->vbvBufferSize = avctx->rc_buffer_size;
460
461 if (rc->averageBitRate > 0)
462 avctx->bit_rate = rc->averageBitRate;
463}
464
465static int nvenc_setup_h264_config(AVCodecContext *avctx)
466{
467 NVENCContext *ctx = avctx->priv_data;
468 NV_ENC_CONFIG *cc = &ctx->config;
469 NV_ENC_CONFIG_H264 *h264 = &cc->encodeCodecConfig.h264Config;
470 NV_ENC_CONFIG_H264_VUI_PARAMETERS *vui = &h264->h264VUIParameters;
471
472 vui->colourDescriptionPresentFlag = 1;
473 vui->videoSignalTypePresentFlag = 1;
474
475 vui->colourMatrix = avctx->colorspace;
476 vui->colourPrimaries = avctx->color_primaries;
477 vui->transferCharacteristics = avctx->color_trc;
478
479 vui->videoFullRangeFlag = avctx->color_range == AVCOL_RANGE_JPEG;
480
481 h264->disableSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 1 : 0;
482 h264->repeatSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 0 : 1;
483
484 h264->maxNumRefFrames = avctx->refs;
485 h264->idrPeriod = cc->gopLength;
486
487 if (ctx->profile)
488 avctx->profile = ctx->profile;
489
490 if (avctx->pix_fmt == AV_PIX_FMT_YUV444P)
491 h264->chromaFormatIDC = 3;
492 else
493 h264->chromaFormatIDC = 1;
494
495 switch (ctx->profile) {
496 case NV_ENC_H264_PROFILE_BASELINE:
497 cc->profileGUID = NV_ENC_H264_PROFILE_BASELINE_GUID;
498 break;
499 case NV_ENC_H264_PROFILE_MAIN:
500 cc->profileGUID = NV_ENC_H264_PROFILE_MAIN_GUID;
501 break;
502 case NV_ENC_H264_PROFILE_HIGH:
503 cc->profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
504 break;
505 case NV_ENC_H264_PROFILE_HIGH_444:
506 cc->profileGUID = NV_ENC_H264_PROFILE_HIGH_444_GUID;
507 break;
508 case NV_ENC_H264_PROFILE_CONSTRAINED_HIGH:
509 cc->profileGUID = NV_ENC_H264_PROFILE_CONSTRAINED_HIGH_GUID;
510 break;
511 }
512
513 h264->level = ctx->level;
514
515 return 0;
516}
517
518static int nvenc_setup_hevc_config(AVCodecContext *avctx)
519{
520 NVENCContext *ctx = avctx->priv_data;
521 NV_ENC_CONFIG *cc = &ctx->config;
522 NV_ENC_CONFIG_HEVC *hevc = &cc->encodeCodecConfig.hevcConfig;
523
524 hevc->disableSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 1 : 0;
525 hevc->repeatSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 0 : 1;
526
527 hevc->maxNumRefFramesInDPB = avctx->refs;
528 hevc->idrPeriod = cc->gopLength;
529
530 /* No other profile is supported in the current SDK version 5 */
531 cc->profileGUID = NV_ENC_HEVC_PROFILE_MAIN_GUID;
532 avctx->profile = FF_PROFILE_HEVC_MAIN;
533
534 if (ctx->level) {
535 hevc->level = ctx->level;
536 } else {
537 hevc->level = NV_ENC_LEVEL_AUTOSELECT;
538 }
539
540 if (ctx->tier) {
541 hevc->tier = ctx->tier;
542 }
543
544 return 0;
545}
546static int nvenc_setup_codec_config(AVCodecContext *avctx)
547{
548 switch (avctx->codec->id) {
549 case AV_CODEC_ID_H264:
550 return nvenc_setup_h264_config(avctx);
551 case AV_CODEC_ID_HEVC:
552 return nvenc_setup_hevc_config(avctx);
553 }
554 return 0;
555}
556
557static int nvenc_setup_encoder(AVCodecContext *avctx)
558{
559 NVENCContext *ctx = avctx->priv_data;
560 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
561 NV_ENC_PRESET_CONFIG preset_cfg = { 0 };
562 int ret;
563
564 ctx->params.version = NV_ENC_INITIALIZE_PARAMS_VER;
565
566 ctx->params.encodeHeight = avctx->height;
567 ctx->params.encodeWidth = avctx->width;
568
569 if (avctx->sample_aspect_ratio.num &&
570 avctx->sample_aspect_ratio.den &&
571 (avctx->sample_aspect_ratio.num != 1 ||
572 avctx->sample_aspect_ratio.den != 1)) {
573 av_reduce(&ctx->params.darWidth,
574 &ctx->params.darHeight,
575 avctx->width * avctx->sample_aspect_ratio.num,
576 avctx->height * avctx->sample_aspect_ratio.den,
577 INT_MAX / 8);
578 } else {
579 ctx->params.darHeight = avctx->height;
580 ctx->params.darWidth = avctx->width;
581 }
582
583 ctx->params.frameRateNum = avctx->time_base.den;
584 ctx->params.frameRateDen = avctx->time_base.num * avctx->ticks_per_frame;
585
586 ctx->params.enableEncodeAsync = 0;
587 ctx->params.enablePTD = 1;
588
589 ctx->params.encodeConfig = &ctx->config;
590
591 nvec_map_preset(ctx);
592
593 preset_cfg.version = NV_ENC_PRESET_CONFIG_VER;
594 preset_cfg.presetCfg.version = NV_ENC_CONFIG_VER;
595
596 ret = nv->nvEncGetEncodePresetConfig(ctx->nvenc_ctx,
597 ctx->params.encodeGUID,
598 ctx->params.presetGUID,
599 &preset_cfg);
600 if (ret != NV_ENC_SUCCESS) {
601 av_log(avctx, AV_LOG_ERROR,
602 "Cannot get the preset configuration\n");
603 return AVERROR_UNKNOWN;
604 }
605
606 memcpy(&ctx->config, &preset_cfg.presetCfg, sizeof(ctx->config));
607
608 ctx->config.version = NV_ENC_CONFIG_VER;
609
610 if (avctx->gop_size > 0) {
611 if (avctx->max_b_frames > 0) {
612 ctx->last_dts = -2;
613 /* 0 is intra-only,
614 * 1 is I/P only,
615 * 2 is one B Frame,
616 * 3 two B frames, and so on. */
617 ctx->config.frameIntervalP = avctx->max_b_frames + 1;
618 } else if (avctx->max_b_frames == 0) {
619 ctx->config.frameIntervalP = 1;
620 }
621 ctx->config.gopLength = avctx->gop_size;
622 } else if (avctx->gop_size == 0) {
623 ctx->config.frameIntervalP = 0;
624 ctx->config.gopLength = 1;
625 }
626
627 if (ctx->config.frameIntervalP > 1)
628 avctx->max_b_frames = ctx->config.frameIntervalP - 1;
629
630 nvenc_setup_rate_control(avctx);
631
632 if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
633 ctx->config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FIELD;
634 } else {
635 ctx->config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME;
636 }
637
638 if ((ret = nvenc_setup_codec_config(avctx)) < 0)
639 return ret;
640
641 ret = nv->nvEncInitializeEncoder(ctx->nvenc_ctx, &ctx->params);
642 if (ret != NV_ENC_SUCCESS) {
643 av_log(avctx, AV_LOG_ERROR, "Cannot initialize the decoder");
644 return AVERROR_UNKNOWN;
645 }
646
647 return 0;
648}
649
650static int nvenc_alloc_surface(AVCodecContext *avctx, int idx)
651{
652 NVENCContext *ctx = avctx->priv_data;
653 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
654 int ret;
655 NV_ENC_CREATE_INPUT_BUFFER in_buffer = { 0 };
656 NV_ENC_CREATE_BITSTREAM_BUFFER out_buffer = { 0 };
657
658 in_buffer.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
659 out_buffer.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
660
661 in_buffer.width = avctx->width;
662 in_buffer.height = avctx->height;
663
664 in_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
665
666 switch (avctx->pix_fmt) {
667 case AV_PIX_FMT_YUV420P:
668 in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YV12_PL;
669 break;
670 case AV_PIX_FMT_NV12:
671 in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_NV12_PL;
672 break;
673 case AV_PIX_FMT_YUV444P:
674 in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YUV444_PL;
675 break;
676 default:
677 return AVERROR_BUG;
678 }
679
680 ret = nv->nvEncCreateInputBuffer(ctx->nvenc_ctx, &in_buffer);
681 if (ret != NV_ENC_SUCCESS) {
682 av_log(avctx, AV_LOG_ERROR, "CreateInputBuffer failed\n");
683 return AVERROR_UNKNOWN;
684 }
685
686 ctx->in[idx].in = in_buffer.inputBuffer;
687 ctx->in[idx].format = in_buffer.bufferFmt;
688
689 /* 1MB is large enough to hold most output frames.
690 * NVENC increases this automaticaly if it's not enough. */
691 out_buffer.size = BITSTREAM_BUFFER_SIZE;
692
693 out_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
694
695 ret = nv->nvEncCreateBitstreamBuffer(ctx->nvenc_ctx, &out_buffer);
696 if (ret != NV_ENC_SUCCESS) {
697 av_log(avctx, AV_LOG_ERROR, "CreateBitstreamBuffer failed\n");
698 return AVERROR_UNKNOWN;
699 }
700
701 ctx->out[idx].out = out_buffer.bitstreamBuffer;
702 ctx->out[idx].busy = 0;
703
704 return 0;
705}
706
707static int nvenc_setup_surfaces(AVCodecContext *avctx)
708{
709 NVENCContext *ctx = avctx->priv_data;
710 int i, ret;
711
712 ctx->nb_surfaces = FFMAX(4 + avctx->max_b_frames,
713 ctx->nb_surfaces);
714
715 ctx->in = av_mallocz(ctx->nb_surfaces * sizeof(*ctx->in));
716 if (!ctx->in)
717 return AVERROR(ENOMEM);
718
719 ctx->out = av_mallocz(ctx->nb_surfaces * sizeof(*ctx->out));
720 if (!ctx->out)
721 return AVERROR(ENOMEM);
722
723 ctx->timestamps = av_fifo_alloc(ctx->nb_surfaces * sizeof(int64_t));
724 if (!ctx->timestamps)
725 return AVERROR(ENOMEM);
726 ctx->pending = av_fifo_alloc(ctx->nb_surfaces * sizeof(ctx->out));
727 if (!ctx->pending)
728 return AVERROR(ENOMEM);
729 ctx->ready = av_fifo_alloc(ctx->nb_surfaces * sizeof(ctx->out));
730 if (!ctx->ready)
731 return AVERROR(ENOMEM);
732
733 for (i = 0; i < ctx->nb_surfaces; i++) {
734 if ((ret = nvenc_alloc_surface(avctx, i)) < 0)
735 return ret;
736 }
737
738 return 0;
739}
740
741#define EXTRADATA_SIZE 512
742
743static int nvenc_setup_extradata(AVCodecContext *avctx)
744{
745 NVENCContext *ctx = avctx->priv_data;
746 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
747 NV_ENC_SEQUENCE_PARAM_PAYLOAD payload = { 0 };
748 int ret;
749
750 avctx->extradata = av_mallocz(EXTRADATA_SIZE + FF_INPUT_BUFFER_PADDING_SIZE);
751 if (!avctx->extradata)
752 return AVERROR(ENOMEM);
753
754 payload.version = NV_ENC_SEQUENCE_PARAM_PAYLOAD_VER;
755 payload.spsppsBuffer = avctx->extradata;
756 payload.inBufferSize = EXTRADATA_SIZE;
757 payload.outSPSPPSPayloadSize = &avctx->extradata_size;
758
759 ret = nv->nvEncGetSequenceParams(ctx->nvenc_ctx, &payload);
760 if (ret != NV_ENC_SUCCESS) {
761 av_log(avctx, AV_LOG_ERROR, "Cannot get the extradata\n");
762 return AVERROR_UNKNOWN;
763 }
764
765 return 0;
766}
767
768av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
769{
770 NVENCContext *ctx = avctx->priv_data;
771 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
772 int i;
773
774 av_frame_free(&avctx->coded_frame);
775
776 if (ctx->in) {
777 for (i = 0; i < ctx->nb_surfaces; ++i) {
778 nv->nvEncDestroyInputBuffer(ctx->nvenc_ctx, ctx->in[i].in);
779 nv->nvEncDestroyBitstreamBuffer(ctx->nvenc_ctx, ctx->out[i].out);
780 }
781 }
782
783 av_freep(&ctx->in);
784 av_freep(&ctx->out);
785
786 if (ctx->nvenc_ctx)
787 nv->nvEncDestroyEncoder(ctx->nvenc_ctx);
788
789 if (ctx->cu_context)
790 ctx->nvel.cu_ctx_destroy(ctx->cu_context);
791
792 if (ctx->nvel.nvenc)
793 dlclose(ctx->nvel.nvenc);
794
795 if (ctx->nvel.cuda)
796 dlclose(ctx->nvel.cuda);
797
798 return 0;
799}
800
801av_cold int ff_nvenc_encode_init(AVCodecContext *avctx)
802{
803 int ret;
804
805 if ((ret = nvenc_load_libraries(avctx)) < 0)
806 return ret;
807
808 if ((ret = nvenc_setup_device(avctx)) < 0)
809 return ret;
810
811 if ((ret = nvenc_setup_encoder(avctx)) < 0)
812 return ret;
813
814 if ((ret = nvenc_setup_surfaces(avctx)) < 0)
815 return ret;
816
817 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
818 if ((ret = nvenc_setup_extradata(avctx)) < 0)
819 return ret;
820 }
821
822 avctx->coded_frame = av_frame_alloc();
823 if (!avctx->coded_frame)
824 return AVERROR(ENOMEM);
825
826 return 0;
827}
828
829static NVENCInputSurface *get_input_surface(NVENCContext *ctx)
830{
831 int i;
832
833 for (i = 0; i < ctx->nb_surfaces; i++) {
834 if (!ctx->in[i].locked) {
835 ctx->in[i].locked = 1;
836 return &ctx->in[i];
837 }
838 }
839
840 return NULL;
841}
842
843static NVENCOutputSurface *get_output_surface(NVENCContext *ctx)
844{
845 int i;
846
847 for (i = 0; i < ctx->nb_surfaces; i++) {
848 if (!ctx->out[i].busy) {
849 return &ctx->out[i];
850 }
851 }
852
853 return NULL;
854}
855
856static int nvenc_copy_frame(NV_ENC_LOCK_INPUT_BUFFER *in, const AVFrame *frame)
857{
858 uint8_t *buf = in->bufferDataPtr;
859 int off = frame->height * in->pitch;
860
861 switch (frame->format) {
862 case AV_PIX_FMT_YUV420P:
863 av_image_copy_plane(buf, in->pitch,
864 frame->data[0], frame->linesize[0],
865 frame->width, frame->height);
866 buf += off;
867
868 av_image_copy_plane(buf, in->pitch >> 1,
869 frame->data[2], frame->linesize[2],
870 frame->width >> 1, frame->height >> 1);
871
872 buf += off >> 2;
873
874 av_image_copy_plane(buf, in->pitch >> 1,
875 frame->data[1], frame->linesize[1],
876 frame->width >> 1, frame->height >> 1);
877 break;
878 case AV_PIX_FMT_NV12:
879 av_image_copy_plane(buf, in->pitch,
880 frame->data[0], frame->linesize[0],
881 frame->width, frame->height);
882 buf += off;
883
884 av_image_copy_plane(buf, in->pitch >> 1,
885 frame->data[1], frame->linesize[1],
886 frame->width >> 1, frame->height >> 1);
887 break;
888 case AV_PIX_FMT_YUV444P:
889 av_image_copy_plane(buf, in->pitch,
890 frame->data[0], frame->linesize[0],
891 frame->width, frame->height);
892 buf += off;
893
894 av_image_copy_plane(buf, in->pitch,
895 frame->data[1], frame->linesize[1],
896 frame->width, frame->height);
897 buf += off;
898
899 av_image_copy_plane(buf, in->pitch,
900 frame->data[2], frame->linesize[2],
901 frame->width, frame->height);
902 break;
903 default:
904 return AVERROR_BUG;
905 }
906
907 return 0;
908}
909
910static int nvenc_enqueue_frame(AVCodecContext *avctx, const AVFrame *frame,
911 NVENCInputSurface **in_surf)
912{
913 NVENCContext *ctx = avctx->priv_data;
914 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
915 NV_ENC_LOCK_INPUT_BUFFER params = { 0 };
916 NVENCInputSurface *in = get_input_surface(ctx);
917 int ret;
918
919 if (!in)
920 return AVERROR_BUG;
921
922 params.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
923 params.inputBuffer = in->in;
924
925
926 ret = nv->nvEncLockInputBuffer(ctx->nvenc_ctx, &params);
927 if (ret != NV_ENC_SUCCESS) {
928 av_log(avctx, AV_LOG_ERROR, "Cannot lock the buffer %p.\n",
929 in);
930 return AVERROR_UNKNOWN;
931 }
932
933 ret = nvenc_copy_frame(&params, frame);
934 if (ret < 0)
935 goto fail;
936
937 ret = nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, in->in);
938 if (ret != NV_ENC_SUCCESS) {
939 av_log(avctx, AV_LOG_ERROR, "Cannot unlock the buffer %p.\n",
940 in);
941 return AVERROR_UNKNOWN;
942 }
943
944 *in_surf = in;
945
946 return 0;
947
948fail:
949 nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, in->in);
950
951 return ret;
952}
953
954static void nvenc_codec_specific_pic_params(AVCodecContext *avctx,
955 NV_ENC_PIC_PARAMS *params)
956{
957 NVENCContext *ctx = avctx->priv_data;
958
959 switch (avctx->codec->id) {
960 case AV_CODEC_ID_H264:
961 params->codecPicParams.h264PicParams.sliceMode =
962 ctx->config.encodeCodecConfig.h264Config.sliceMode;
963 params->codecPicParams.h264PicParams.sliceModeData =
964 ctx->config.encodeCodecConfig.h264Config.sliceModeData;
965 break;
966 case AV_CODEC_ID_HEVC:
967 params->codecPicParams.hevcPicParams.sliceMode =
968 ctx->config.encodeCodecConfig.hevcConfig.sliceMode;
969 params->codecPicParams.hevcPicParams.sliceModeData =
970 ctx->config.encodeCodecConfig.hevcConfig.sliceModeData;
971 break;
972 }
973}
974
975static inline int nvenc_enqueue_timestamp(AVFifoBuffer *f, int64_t pts)
976{
977 return av_fifo_generic_write(f, &pts, sizeof(pts), NULL);
978}
979
980static inline int nvenc_dequeue_timestamp(AVFifoBuffer *f, int64_t *pts)
981{
982 return av_fifo_generic_read(f, pts, sizeof(*pts), NULL);
983}
984
985static inline int nvenc_enqueue_surface(AVFifoBuffer *f,
986 NVENCOutputSurface *surf)
987{
988 surf->busy = 1;
989 return av_fifo_generic_write(f, &surf, sizeof(surf), NULL);
990}
991
992static inline int nvenc_dequeue_surface(AVFifoBuffer *f,
993 NVENCOutputSurface **surf)
994{
995 return av_fifo_generic_read(f, surf, sizeof(*surf), NULL);
996}
997
998static int nvenc_set_timestamp(NVENCContext *ctx,
999 NV_ENC_LOCK_BITSTREAM *params,
1000 AVPacket *pkt)
1001{
1002 pkt->pts = params->outputTimeStamp;
1003 pkt->duration = params->outputDuration;
1004
1005 return nvenc_dequeue_timestamp(ctx->timestamps, &pkt->dts);
1006}
1007
1008static int nvenc_get_frame(AVCodecContext *avctx, AVPacket *pkt)
1009{
1010 NVENCContext *ctx = avctx->priv_data;
1011 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
1012 NV_ENC_LOCK_BITSTREAM params = { 0 };
1013 NVENCOutputSurface *out = NULL;
1014 int ret;
1015
1016 ret = nvenc_dequeue_surface(ctx->pending, &out);
1017 if (ret)
1018 return ret;
1019
1020 params.version = NV_ENC_LOCK_BITSTREAM_VER;
1021 params.outputBitstream = out->out;
1022
1023 ret = nv->nvEncLockBitstream(ctx->nvenc_ctx, &params);
1024 if (ret < 0)
1025 return AVERROR_UNKNOWN;
1026
1027 ret = ff_alloc_packet(pkt, params.bitstreamSizeInBytes);
1028 if (ret < 0)
1029 return ret;
1030
1031 memcpy(pkt->data, params.bitstreamBufferPtr, pkt->size);
1032
1033 ret = nv->nvEncUnlockBitstream(ctx->nvenc_ctx, out->out);
1034 if (ret < 0)
1035 return AVERROR_UNKNOWN;
1036
1037 out->busy = out->in->locked = 0;
1038
1039 ret = nvenc_set_timestamp(ctx, &params, pkt);
1040 if (ret < 0)
1041 return ret;
1042
1043 switch (params.pictureType) {
1044 case NV_ENC_PIC_TYPE_IDR:
1045 pkt->flags |= AV_PKT_FLAG_KEY;
1046 case NV_ENC_PIC_TYPE_INTRA_REFRESH:
1047 case NV_ENC_PIC_TYPE_I:
1048 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
1049 break;
1050 case NV_ENC_PIC_TYPE_P:
1051 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
1052 break;
1053 case NV_ENC_PIC_TYPE_B:
1054 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
1055 break;
1056 case NV_ENC_PIC_TYPE_BI:
1057 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_BI;
1058 break;
1059 }
1060
1061 return 0;
1062}
1063
1064int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
1065 const AVFrame *frame, int *got_packet)
1066{
1067 NVENCContext *ctx = avctx->priv_data;
1068 NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
1069 NV_ENC_PIC_PARAMS params = { 0 };
1070 NVENCInputSurface *in = NULL;
1071 NVENCOutputSurface *out = NULL;
1072 int ret;
1073
1074 params.version = NV_ENC_PIC_PARAMS_VER;
1075
1076 if (frame) {
1077 ret = nvenc_enqueue_frame(avctx, frame, &in);
1078 if (ret < 0)
1079 return ret;
1080 out = get_output_surface(ctx);
1081 if (!out)
1082 return AVERROR_BUG;
1083
1084 out->in = in;
1085
1086 params.inputBuffer = in->in;
1087 params.bufferFmt = in->format;
1088 params.inputWidth = frame->width;
1089 params.inputHeight = frame->height;
1090 params.outputBitstream = out->out;
1091 params.inputTimeStamp = frame->pts;
1092
1093 if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
1094 if (frame->top_field_first)
1095 params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_TOP_BOTTOM;
1096 else
1097 params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_BOTTOM_TOP;
1098 } else {
1099 params.pictureStruct = NV_ENC_PIC_STRUCT_FRAME;
1100 }
1101
1102 nvenc_codec_specific_pic_params(avctx, &params);
1103
1104 ret = nvenc_enqueue_timestamp(ctx->timestamps, frame->pts);
1105 if (ret < 0)
1106 return ret;
1107 } else {
1108 params.encodePicFlags = NV_ENC_PIC_FLAG_EOS;
1109 }
1110
1111 ret = nv->nvEncEncodePicture(ctx->nvenc_ctx, &params);
1112
1113 if (ret != NV_ENC_SUCCESS &&
1114 ret != NV_ENC_ERR_NEED_MORE_INPUT) {
1115
1116 return AVERROR_UNKNOWN;
1117 }
1118
1119 if (out) {
1120 ret = nvenc_enqueue_surface(ctx->pending, out);
1121 if (ret < 0)
1122 return ret;
1123 }
1124
1125 if (ret != NV_ENC_ERR_NEED_MORE_INPUT &&
1126 av_fifo_size(ctx->pending)) {
1127 ret = nvenc_get_frame(avctx, pkt);
1128 if (ret < 0)
1129 return ret;
1130 *got_packet = 1;
1131 } else {
1132 *got_packet = 0;
1133 }
1134
1135 return 0;
1136}