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FFmpeg/libavcodec/nvenc.c
Anton Khirnov c59fec783d nvenc: generate dts properly 
When there is a non-zero decoding delay due to reordering, the first dts
should be lower than the first pts (since the first packet fed to the
decoder does not produce any output).

Use the same scheme used in mpegvideo_enc (which comes from x264
originally) -- wait for first two timestamps and extrapolate linearly to
the past to produce the first dts value.
2016-01-12 09:23:38 +01:00

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/*
* NVIDIA NVENC Support
* Copyright (C) 2015 Luca Barbato
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <cuda.h>
#include <nvEncodeAPI.h>
#include <string.h>
#define CUDA_LIBNAME "libcuda.so"
#if HAVE_DLFCN_H
#include <dlfcn.h>
#define NVENC_LIBNAME "libnvidia-encode.so"
#elif HAVE_WINDOWS_H
#include <windows.h>
#if ARCH_X86_64
#define NVENC_LIBNAME "nvEncodeAPI64.dll"
#else
#define NVENC_LIBNAME "nvEncodeAPI.dll"
#endif
#define dlopen(filename, flags) LoadLibrary((filename))
#define dlsym(handle, symbol) GetProcAddress(handle, symbol)
#define dlclose(handle) FreeLibrary(handle)
#endif
#include "libavutil/common.h"
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "internal.h"
#include "nvenc.h"
#define NVENC_CAP 0x30
#define BITSTREAM_BUFFER_SIZE 1024 * 1024
#define LOAD_LIBRARY(l, path) \
do { \
if (!((l) = dlopen(path, RTLD_LAZY))) { \
av_log(avctx, AV_LOG_ERROR, \
"Cannot load %s\n", \
path); \
return AVERROR_UNKNOWN; \
} \
} while (0)
#define LOAD_SYMBOL(fun, lib, symbol) \
do { \
if (!((fun) = dlsym(lib, symbol))) { \
av_log(avctx, AV_LOG_ERROR, \
"Cannot load %s\n", \
symbol); \
return AVERROR_UNKNOWN; \
} \
} while (0)
static const struct {
NVENCSTATUS nverr;
int averr;
const char *desc;
} nvenc_errors[] = {
{ NV_ENC_SUCCESS, 0, "success" },
{ NV_ENC_ERR_NO_ENCODE_DEVICE, AVERROR(ENOENT), "no encode device" },
{ NV_ENC_ERR_UNSUPPORTED_DEVICE, AVERROR(ENOSYS), "unsupported device" },
{ NV_ENC_ERR_INVALID_ENCODERDEVICE, AVERROR(EINVAL), "invalid encoder device" },
{ NV_ENC_ERR_INVALID_DEVICE, AVERROR(EINVAL), "invalid device" },
{ NV_ENC_ERR_DEVICE_NOT_EXIST, AVERROR(EIO), "device does not exist" },
{ NV_ENC_ERR_INVALID_PTR, AVERROR(EFAULT), "invalid ptr" },
{ NV_ENC_ERR_INVALID_EVENT, AVERROR(EINVAL), "invalid event" },
{ NV_ENC_ERR_INVALID_PARAM, AVERROR(EINVAL), "invalid param" },
{ NV_ENC_ERR_INVALID_CALL, AVERROR(EINVAL), "invalid call" },
{ NV_ENC_ERR_OUT_OF_MEMORY, AVERROR(ENOMEM), "out of memory" },
{ NV_ENC_ERR_ENCODER_NOT_INITIALIZED, AVERROR(EINVAL), "encoder not initialized" },
{ NV_ENC_ERR_UNSUPPORTED_PARAM, AVERROR(ENOSYS), "unsupported param" },
{ NV_ENC_ERR_LOCK_BUSY, AVERROR(EAGAIN), "lock busy" },
{ NV_ENC_ERR_NOT_ENOUGH_BUFFER, AVERROR(ENOBUFS), "not enough buffer" },
{ NV_ENC_ERR_INVALID_VERSION, AVERROR(EINVAL), "invalid version" },
{ NV_ENC_ERR_MAP_FAILED, AVERROR(EIO), "map failed" },
{ NV_ENC_ERR_NEED_MORE_INPUT, AVERROR(EAGAIN), "need more input" },
{ NV_ENC_ERR_ENCODER_BUSY, AVERROR(EAGAIN), "encoder busy" },
{ NV_ENC_ERR_EVENT_NOT_REGISTERD, AVERROR(EBADF), "event not registered" },
{ NV_ENC_ERR_GENERIC, AVERROR_UNKNOWN, "generic error" },
{ NV_ENC_ERR_INCOMPATIBLE_CLIENT_KEY, AVERROR(EINVAL), "incompatible client key" },
{ NV_ENC_ERR_UNIMPLEMENTED, AVERROR(ENOSYS), "unimplemented" },
{ NV_ENC_ERR_RESOURCE_REGISTER_FAILED, AVERROR(EIO), "resource register failed" },
{ NV_ENC_ERR_RESOURCE_NOT_REGISTERED, AVERROR(EBADF), "resource not registered" },
{ NV_ENC_ERR_RESOURCE_NOT_MAPPED, AVERROR(EBADF), "resource not mapped" },
};
static int nvenc_map_error(NVENCSTATUS err, const char **desc)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(nvenc_errors); i++) {
if (nvenc_errors[i].nverr == err) {
if (desc)
*desc = nvenc_errors[i].desc;
return nvenc_errors[i].averr;
}
}
if (desc)
*desc = "unknown error";
return AVERROR_UNKNOWN;
}
static int nvenc_print_error(void *log_ctx, NVENCSTATUS err,
const char *error_string)
{
const char *desc;
int ret;
ret = nvenc_map_error(err, &desc);
av_log(log_ctx, AV_LOG_ERROR, "%s: %s (%d)\n", error_string, desc, err);
return ret;
}
static av_cold int nvenc_load_libraries(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NVENCLibraryContext *nvel = &ctx->nvel;
PNVENCODEAPICREATEINSTANCE nvenc_create_instance;
NVENCSTATUS err;
LOAD_LIBRARY(nvel->cuda, CUDA_LIBNAME);
LOAD_SYMBOL(nvel->cu_init, nvel->cuda, "cuInit");
LOAD_SYMBOL(nvel->cu_device_get_count, nvel->cuda, "cuDeviceGetCount");
LOAD_SYMBOL(nvel->cu_device_get, nvel->cuda, "cuDeviceGet");
LOAD_SYMBOL(nvel->cu_device_get_name, nvel->cuda, "cuDeviceGetName");
LOAD_SYMBOL(nvel->cu_device_compute_capability, nvel->cuda,
"cuDeviceComputeCapability");
LOAD_SYMBOL(nvel->cu_ctx_create, nvel->cuda, "cuCtxCreate_v2");
LOAD_SYMBOL(nvel->cu_ctx_pop_current, nvel->cuda, "cuCtxPopCurrent_v2");
LOAD_SYMBOL(nvel->cu_ctx_destroy, nvel->cuda, "cuCtxDestroy_v2");
LOAD_LIBRARY(nvel->nvenc, NVENC_LIBNAME);
LOAD_SYMBOL(nvenc_create_instance, nvel->nvenc,
"NvEncodeAPICreateInstance");
nvel->nvenc_funcs.version = NV_ENCODE_API_FUNCTION_LIST_VER;
err = nvenc_create_instance(&nvel->nvenc_funcs);
if (err != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, err, "Cannot create the NVENC instance");
return 0;
}
static int nvenc_open_session(AVCodecContext *avctx)
{
NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params = { 0 };
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int ret;
params.version = NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER;
params.apiVersion = NVENCAPI_VERSION;
params.device = ctx->cu_context;
params.deviceType = NV_ENC_DEVICE_TYPE_CUDA;
ret = nv->nvEncOpenEncodeSessionEx(&params, &ctx->nvenc_ctx);
if (ret != NV_ENC_SUCCESS) {
ctx->nvenc_ctx = NULL;
return nvenc_print_error(avctx, ret, "Cannot open the NVENC Session");
}
return 0;
}
static int nvenc_check_codec_support(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int i, ret, count = 0;
GUID *guids = NULL;
ret = nv->nvEncGetEncodeGUIDCount(ctx->nvenc_ctx, &count);
if (ret != NV_ENC_SUCCESS || !count)
return AVERROR(ENOSYS);
guids = av_malloc(count * sizeof(GUID));
if (!guids)
return AVERROR(ENOMEM);
ret = nv->nvEncGetEncodeGUIDs(ctx->nvenc_ctx, guids, count, &count);
if (ret != NV_ENC_SUCCESS) {
ret = AVERROR(ENOSYS);
goto fail;
}
ret = AVERROR(ENOSYS);
for (i = 0; i < count; i++) {
if (!memcmp(&guids[i], &ctx->params.encodeGUID, sizeof(*guids))) {
ret = 0;
break;
}
}
fail:
av_free(guids);
return ret;
}
static int nvenc_check_cap(AVCodecContext *avctx, NV_ENC_CAPS cap)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_CAPS_PARAM params = { 0 };
int ret, val = 0;
params.version = NV_ENC_CAPS_PARAM_VER;
params.capsToQuery = cap;
ret = nv->nvEncGetEncodeCaps(ctx->nvenc_ctx, ctx->params.encodeGUID, &params, &val);
if (ret == NV_ENC_SUCCESS)
return val;
return 0;
}
static int nvenc_check_capabilities(AVCodecContext *avctx)
{
int ret;
ret = nvenc_check_codec_support(avctx);
if (ret < 0) {
av_log(avctx, AV_LOG_VERBOSE, "Codec not supported\n");
return ret;
}
ret = nvenc_check_cap(avctx, NV_ENC_CAPS_SUPPORT_YUV444_ENCODE);
if (avctx->pix_fmt == AV_PIX_FMT_YUV444P && ret <= 0) {
av_log(avctx, AV_LOG_VERBOSE, "YUV444P not supported\n");
return AVERROR(ENOSYS);
}
ret = nvenc_check_cap(avctx, NV_ENC_CAPS_WIDTH_MAX);
if (ret < avctx->width) {
av_log(avctx, AV_LOG_VERBOSE, "Width %d exceeds %d\n",
avctx->width, ret);
return AVERROR(ENOSYS);
}
ret = nvenc_check_cap(avctx, NV_ENC_CAPS_HEIGHT_MAX);
if (ret < avctx->height) {
av_log(avctx, AV_LOG_VERBOSE, "Height %d exceeds %d\n",
avctx->height, ret);
return AVERROR(ENOSYS);
}
ret = nvenc_check_cap(avctx, NV_ENC_CAPS_NUM_MAX_BFRAMES);
if (ret < avctx->max_b_frames) {
av_log(avctx, AV_LOG_VERBOSE, "Max b-frames %d exceed %d\n",
avctx->max_b_frames, ret);
return AVERROR(ENOSYS);
}
return 0;
}
static int nvenc_check_device(AVCodecContext *avctx, int idx)
{
NVENCContext *ctx = avctx->priv_data;
NVENCLibraryContext *nvel = &ctx->nvel;
char name[128] = { 0 };
int major, minor, ret;
CUdevice cu_device;
CUcontext dummy;
int loglevel = AV_LOG_VERBOSE;
if (ctx->device == LIST_DEVICES)
loglevel = AV_LOG_INFO;
ret = nvel->cu_device_get(&cu_device, idx);
if (ret != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot access the CUDA device %d\n",
idx);
return -1;
}
ret = nvel->cu_device_get_name(name, sizeof(name), cu_device);
if (ret != CUDA_SUCCESS)
return -1;
ret = nvel->cu_device_compute_capability(&major, &minor, cu_device);
if (ret != CUDA_SUCCESS)
return -1;
av_log(avctx, loglevel, "Device %d [%s] ", cu_device, name);
if (((major << 4) | minor) < NVENC_CAP)
goto fail;
ret = nvel->cu_ctx_create(&ctx->cu_context, 0, cu_device);
if (ret != CUDA_SUCCESS)
goto fail;
ret = nvel->cu_ctx_pop_current(&dummy);
if (ret != CUDA_SUCCESS)
goto fail2;
if ((ret = nvenc_open_session(avctx)) < 0)
goto fail2;
if ((ret = nvenc_check_capabilities(avctx)) < 0)
goto fail3;
av_log(avctx, loglevel, "supports NVENC\n");
if (ctx->device == cu_device || ctx->device == ANY_DEVICE)
return 0;
fail3:
nvel->nvenc_funcs.nvEncDestroyEncoder(ctx->nvenc_ctx);
ctx->nvenc_ctx = NULL;
fail2:
nvel->cu_ctx_destroy(ctx->cu_context);
ctx->cu_context = NULL;
fail:
if (ret != 0)
av_log(avctx, loglevel, "does not support NVENC (major %d minor %d)\n",
major, minor);
return AVERROR(ENOSYS);
}
static int nvenc_setup_device(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NVENCLibraryContext *nvel = &ctx->nvel;
int i, nb_devices = 0;
if ((nvel->cu_init(0)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot init CUDA\n");
return AVERROR_UNKNOWN;
}
if ((nvel->cu_device_get_count(&nb_devices)) != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_ERROR,
"Cannot enumerate the CUDA devices\n");
return AVERROR_UNKNOWN;
}
switch (avctx->codec->id) {
case AV_CODEC_ID_H264:
ctx->params.encodeGUID = NV_ENC_CODEC_H264_GUID;
break;
case AV_CODEC_ID_HEVC:
ctx->params.encodeGUID = NV_ENC_CODEC_HEVC_GUID;
break;
default:
return AVERROR_BUG;
}
for (i = 0; i < nb_devices; ++i) {
if ((nvenc_check_device(avctx, i)) >= 0 && ctx->device != LIST_DEVICES)
return 0;
}
if (ctx->device == LIST_DEVICES)
return AVERROR_EXIT;
return AVERROR(ENOSYS);
}
typedef struct GUIDTuple {
const GUID guid;
int flags;
} GUIDTuple;
static int nvec_map_preset(NVENCContext *ctx)
{
GUIDTuple presets[] = {
{ NV_ENC_PRESET_DEFAULT_GUID },
{ NV_ENC_PRESET_HP_GUID },
{ NV_ENC_PRESET_HQ_GUID },
{ NV_ENC_PRESET_BD_GUID },
{ NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID, NVENC_LOWLATENCY },
{ NV_ENC_PRESET_LOW_LATENCY_HP_GUID, NVENC_LOWLATENCY },
{ NV_ENC_PRESET_LOW_LATENCY_HQ_GUID, NVENC_LOWLATENCY },
{ NV_ENC_PRESET_LOSSLESS_DEFAULT_GUID, NVENC_LOSSLESS },
{ NV_ENC_PRESET_LOSSLESS_HP_GUID, NVENC_LOSSLESS },
{ { 0 } }
};
GUIDTuple *t = &presets[ctx->preset];
ctx->params.presetGUID = t->guid;
ctx->flags = t->flags;
return AVERROR(EINVAL);
}
static void set_constqp(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
{
rc->rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
rc->constQP.qpInterB = avctx->global_quality;
rc->constQP.qpInterP = avctx->global_quality;
rc->constQP.qpIntra = avctx->global_quality;
}
static void set_vbr(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
{
if (avctx->qmin >= 0) {
rc->enableMinQP = 1;
rc->minQP.qpInterB = avctx->qmin;
rc->minQP.qpInterP = avctx->qmin;
rc->minQP.qpIntra = avctx->qmin;
}
if (avctx->qmax >= 0) {
rc->enableMaxQP = 1;
rc->maxQP.qpInterB = avctx->qmax;
rc->maxQP.qpInterP = avctx->qmax;
rc->maxQP.qpIntra = avctx->qmax;
}
}
static void nvenc_override_rate_control(AVCodecContext *avctx,
NV_ENC_RC_PARAMS *rc)
{
NVENCContext *ctx = avctx->priv_data;
switch (ctx->rc) {
case NV_ENC_PARAMS_RC_CONSTQP:
if (avctx->global_quality < 0) {
av_log(avctx, AV_LOG_WARNING,
"The constant quality rate-control requires "
"the 'global_quality' option set.\n");
return;
}
set_constqp(avctx, rc);
return;
case NV_ENC_PARAMS_RC_2_PASS_VBR:
case NV_ENC_PARAMS_RC_VBR:
if (avctx->qmin < 0 && avctx->qmax < 0) {
av_log(avctx, AV_LOG_WARNING,
"The variable bitrate rate-control requires "
"the 'qmin' and/or 'qmax' option set.\n");
return;
}
case NV_ENC_PARAMS_RC_VBR_MINQP:
if (avctx->qmin < 0) {
av_log(avctx, AV_LOG_WARNING,
"The variable bitrate rate-control requires "
"the 'qmin' option set.\n");
return;
}
set_vbr(avctx, rc);
break;
case NV_ENC_PARAMS_RC_CBR:
break;
case NV_ENC_PARAMS_RC_2_PASS_QUALITY:
case NV_ENC_PARAMS_RC_2_PASS_FRAMESIZE_CAP:
if (!(ctx->flags & NVENC_LOWLATENCY)) {
av_log(avctx, AV_LOG_WARNING,
"The multipass rate-control requires "
"a low-latency preset.\n");
return;
}
}
rc->rateControlMode = ctx->rc;
}
static void nvenc_setup_rate_control(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENC_RC_PARAMS *rc = &ctx->config.rcParams;
if (avctx->bit_rate > 0)
rc->averageBitRate = avctx->bit_rate;
if (avctx->rc_max_rate > 0)
rc->maxBitRate = avctx->rc_max_rate;
if (ctx->rc > 0) {
nvenc_override_rate_control(avctx, rc);
} else if (avctx->global_quality > 0) {
set_constqp(avctx, rc);
} else if (avctx->qmin >= 0 && avctx->qmax >= 0) {
rc->rateControlMode = NV_ENC_PARAMS_RC_VBR;
set_vbr(avctx, rc);
}
if (avctx->rc_buffer_size > 0)
rc->vbvBufferSize = avctx->rc_buffer_size;
if (rc->averageBitRate > 0)
avctx->bit_rate = rc->averageBitRate;
}
static int nvenc_setup_h264_config(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENC_CONFIG *cc = &ctx->config;
NV_ENC_CONFIG_H264 *h264 = &cc->encodeCodecConfig.h264Config;
NV_ENC_CONFIG_H264_VUI_PARAMETERS *vui = &h264->h264VUIParameters;
vui->colourDescriptionPresentFlag = 1;
vui->videoSignalTypePresentFlag = 1;
vui->colourMatrix = avctx->colorspace;
vui->colourPrimaries = avctx->color_primaries;
vui->transferCharacteristics = avctx->color_trc;
vui->videoFullRangeFlag = avctx->color_range == AVCOL_RANGE_JPEG;
h264->disableSPSPPS = (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ? 1 : 0;
h264->repeatSPSPPS = (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ? 0 : 1;
h264->maxNumRefFrames = avctx->refs;
h264->idrPeriod = cc->gopLength;
if (ctx->profile)
avctx->profile = ctx->profile;
if (avctx->pix_fmt == AV_PIX_FMT_YUV444P)
h264->chromaFormatIDC = 3;
else
h264->chromaFormatIDC = 1;
switch (ctx->profile) {
case NV_ENC_H264_PROFILE_BASELINE:
cc->profileGUID = NV_ENC_H264_PROFILE_BASELINE_GUID;
break;
case NV_ENC_H264_PROFILE_MAIN:
cc->profileGUID = NV_ENC_H264_PROFILE_MAIN_GUID;
break;
case NV_ENC_H264_PROFILE_HIGH:
cc->profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
break;
case NV_ENC_H264_PROFILE_HIGH_444:
cc->profileGUID = NV_ENC_H264_PROFILE_HIGH_444_GUID;
break;
case NV_ENC_H264_PROFILE_CONSTRAINED_HIGH:
cc->profileGUID = NV_ENC_H264_PROFILE_CONSTRAINED_HIGH_GUID;
break;
}
h264->level = ctx->level;
return 0;
}
static int nvenc_setup_hevc_config(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENC_CONFIG *cc = &ctx->config;
NV_ENC_CONFIG_HEVC *hevc = &cc->encodeCodecConfig.hevcConfig;
hevc->disableSPSPPS = (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ? 1 : 0;
hevc->repeatSPSPPS = (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ? 0 : 1;
hevc->maxNumRefFramesInDPB = avctx->refs;
hevc->idrPeriod = cc->gopLength;
/* No other profile is supported in the current SDK version 5 */
cc->profileGUID = NV_ENC_HEVC_PROFILE_MAIN_GUID;
avctx->profile = FF_PROFILE_HEVC_MAIN;
if (ctx->level) {
hevc->level = ctx->level;
} else {
hevc->level = NV_ENC_LEVEL_AUTOSELECT;
}
if (ctx->tier) {
hevc->tier = ctx->tier;
}
return 0;
}
static int nvenc_setup_codec_config(AVCodecContext *avctx)
{
switch (avctx->codec->id) {
case AV_CODEC_ID_H264:
return nvenc_setup_h264_config(avctx);
case AV_CODEC_ID_HEVC:
return nvenc_setup_hevc_config(avctx);
}
return 0;
}
static int nvenc_setup_encoder(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_PRESET_CONFIG preset_cfg = { 0 };
AVCPBProperties *cpb_props;
int ret;
ctx->params.version = NV_ENC_INITIALIZE_PARAMS_VER;
ctx->params.encodeHeight = avctx->height;
ctx->params.encodeWidth = avctx->width;
if (avctx->sample_aspect_ratio.num &&
avctx->sample_aspect_ratio.den &&
(avctx->sample_aspect_ratio.num != 1 ||
avctx->sample_aspect_ratio.den != 1)) {
av_reduce(&ctx->params.darWidth,
&ctx->params.darHeight,
avctx->width * avctx->sample_aspect_ratio.num,
avctx->height * avctx->sample_aspect_ratio.den,
INT_MAX / 8);
} else {
ctx->params.darHeight = avctx->height;
ctx->params.darWidth = avctx->width;
}
ctx->params.frameRateNum = avctx->time_base.den;
ctx->params.frameRateDen = avctx->time_base.num * avctx->ticks_per_frame;
ctx->params.enableEncodeAsync = 0;
ctx->params.enablePTD = 1;
ctx->params.encodeConfig = &ctx->config;
nvec_map_preset(ctx);
preset_cfg.version = NV_ENC_PRESET_CONFIG_VER;
preset_cfg.presetCfg.version = NV_ENC_CONFIG_VER;
ret = nv->nvEncGetEncodePresetConfig(ctx->nvenc_ctx,
ctx->params.encodeGUID,
ctx->params.presetGUID,
&preset_cfg);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot get the preset configuration");
memcpy(&ctx->config, &preset_cfg.presetCfg, sizeof(ctx->config));
ctx->config.version = NV_ENC_CONFIG_VER;
if (avctx->gop_size > 0) {
if (avctx->max_b_frames > 0) {
/* 0 is intra-only,
* 1 is I/P only,
* 2 is one B Frame,
* 3 two B frames, and so on. */
ctx->config.frameIntervalP = avctx->max_b_frames + 1;
} else if (avctx->max_b_frames == 0) {
ctx->config.frameIntervalP = 1;
}
ctx->config.gopLength = avctx->gop_size;
} else if (avctx->gop_size == 0) {
ctx->config.frameIntervalP = 0;
ctx->config.gopLength = 1;
}
if (ctx->config.frameIntervalP > 1)
avctx->max_b_frames = ctx->config.frameIntervalP - 1;
ctx->initial_pts[0] = AV_NOPTS_VALUE;
ctx->initial_pts[1] = AV_NOPTS_VALUE;
nvenc_setup_rate_control(avctx);
if (avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
ctx->config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FIELD;
} else {
ctx->config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME;
}
if ((ret = nvenc_setup_codec_config(avctx)) < 0)
return ret;
ret = nv->nvEncInitializeEncoder(ctx->nvenc_ctx, &ctx->params);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot initialize the decoder");
cpb_props = ff_add_cpb_side_data(avctx);
if (!cpb_props)
return AVERROR(ENOMEM);
cpb_props->max_bitrate = avctx->rc_max_rate;
cpb_props->min_bitrate = avctx->rc_min_rate;
cpb_props->avg_bitrate = avctx->bit_rate;
cpb_props->buffer_size = avctx->rc_buffer_size;
return 0;
}
static int nvenc_alloc_surface(AVCodecContext *avctx, int idx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int ret;
NV_ENC_CREATE_INPUT_BUFFER in_buffer = { 0 };
NV_ENC_CREATE_BITSTREAM_BUFFER out_buffer = { 0 };
in_buffer.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
out_buffer.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
in_buffer.width = avctx->width;
in_buffer.height = avctx->height;
in_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV420P:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YV12_PL;
break;
case AV_PIX_FMT_NV12:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_NV12_PL;
break;
case AV_PIX_FMT_YUV444P:
in_buffer.bufferFmt = NV_ENC_BUFFER_FORMAT_YUV444_PL;
break;
default:
return AVERROR_BUG;
}
ret = nv->nvEncCreateInputBuffer(ctx->nvenc_ctx, &in_buffer);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "CreateInputBuffer failed");
ctx->in[idx].in = in_buffer.inputBuffer;
ctx->in[idx].format = in_buffer.bufferFmt;
/* 1MB is large enough to hold most output frames.
* NVENC increases this automaticaly if it's not enough. */
out_buffer.size = BITSTREAM_BUFFER_SIZE;
out_buffer.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_UNCACHED;
ret = nv->nvEncCreateBitstreamBuffer(ctx->nvenc_ctx, &out_buffer);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "CreateBitstreamBuffer failed");
ctx->out[idx].out = out_buffer.bitstreamBuffer;
ctx->out[idx].busy = 0;
return 0;
}
static int nvenc_setup_surfaces(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
int i, ret;
ctx->nb_surfaces = FFMAX(4 + avctx->max_b_frames,
ctx->nb_surfaces);
ctx->in = av_mallocz(ctx->nb_surfaces * sizeof(*ctx->in));
if (!ctx->in)
return AVERROR(ENOMEM);
ctx->out = av_mallocz(ctx->nb_surfaces * sizeof(*ctx->out));
if (!ctx->out)
return AVERROR(ENOMEM);
ctx->timestamps = av_fifo_alloc(ctx->nb_surfaces * sizeof(int64_t));
if (!ctx->timestamps)
return AVERROR(ENOMEM);
ctx->pending = av_fifo_alloc(ctx->nb_surfaces * sizeof(ctx->out));
if (!ctx->pending)
return AVERROR(ENOMEM);
ctx->ready = av_fifo_alloc(ctx->nb_surfaces * sizeof(ctx->out));
if (!ctx->ready)
return AVERROR(ENOMEM);
for (i = 0; i < ctx->nb_surfaces; i++) {
if ((ret = nvenc_alloc_surface(avctx, i)) < 0)
return ret;
}
return 0;
}
#define EXTRADATA_SIZE 512
static int nvenc_setup_extradata(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_SEQUENCE_PARAM_PAYLOAD payload = { 0 };
int ret;
avctx->extradata = av_mallocz(EXTRADATA_SIZE + AV_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata)
return AVERROR(ENOMEM);
payload.version = NV_ENC_SEQUENCE_PARAM_PAYLOAD_VER;
payload.spsppsBuffer = avctx->extradata;
payload.inBufferSize = EXTRADATA_SIZE;
payload.outSPSPPSPayloadSize = &avctx->extradata_size;
ret = nv->nvEncGetSequenceParams(ctx->nvenc_ctx, &payload);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot get the extradata");
return 0;
}
av_cold int ff_nvenc_encode_close(AVCodecContext *avctx)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
int i;
/* the encoder has to be flushed before it can be closed */
if (ctx->nvenc_ctx) {
NV_ENC_PIC_PARAMS params = { .version = NV_ENC_PIC_PARAMS_VER,
.encodePicFlags = NV_ENC_PIC_FLAG_EOS };
nv->nvEncEncodePicture(ctx->nvenc_ctx, &params);
}
av_fifo_free(ctx->timestamps);
av_fifo_free(ctx->pending);
av_fifo_free(ctx->ready);
if (ctx->in) {
for (i = 0; i < ctx->nb_surfaces; ++i) {
nv->nvEncDestroyInputBuffer(ctx->nvenc_ctx, ctx->in[i].in);
nv->nvEncDestroyBitstreamBuffer(ctx->nvenc_ctx, ctx->out[i].out);
}
}
av_freep(&ctx->in);
av_freep(&ctx->out);
if (ctx->nvenc_ctx)
nv->nvEncDestroyEncoder(ctx->nvenc_ctx);
if (ctx->cu_context)
ctx->nvel.cu_ctx_destroy(ctx->cu_context);
if (ctx->nvel.nvenc)
dlclose(ctx->nvel.nvenc);
if (ctx->nvel.cuda)
dlclose(ctx->nvel.cuda);
return 0;
}
av_cold int ff_nvenc_encode_init(AVCodecContext *avctx)
{
int ret;
if ((ret = nvenc_load_libraries(avctx)) < 0)
return ret;
if ((ret = nvenc_setup_device(avctx)) < 0)
return ret;
if ((ret = nvenc_setup_encoder(avctx)) < 0)
return ret;
if ((ret = nvenc_setup_surfaces(avctx)) < 0)
return ret;
if (avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) {
if ((ret = nvenc_setup_extradata(avctx)) < 0)
return ret;
}
return 0;
}
static NVENCInputSurface *get_input_surface(NVENCContext *ctx)
{
int i;
for (i = 0; i < ctx->nb_surfaces; i++) {
if (!ctx->in[i].locked) {
ctx->in[i].locked = 1;
return &ctx->in[i];
}
}
return NULL;
}
static NVENCOutputSurface *get_output_surface(NVENCContext *ctx)
{
int i;
for (i = 0; i < ctx->nb_surfaces; i++) {
if (!ctx->out[i].busy) {
return &ctx->out[i];
}
}
return NULL;
}
static int nvenc_copy_frame(NV_ENC_LOCK_INPUT_BUFFER *in, const AVFrame *frame)
{
uint8_t *buf = in->bufferDataPtr;
int off = frame->height * in->pitch;
switch (frame->format) {
case AV_PIX_FMT_YUV420P:
av_image_copy_plane(buf, in->pitch,
frame->data[0], frame->linesize[0],
frame->width, frame->height);
buf += off;
av_image_copy_plane(buf, in->pitch >> 1,
frame->data[2], frame->linesize[2],
frame->width >> 1, frame->height >> 1);
buf += off >> 2;
av_image_copy_plane(buf, in->pitch >> 1,
frame->data[1], frame->linesize[1],
frame->width >> 1, frame->height >> 1);
break;
case AV_PIX_FMT_NV12:
av_image_copy_plane(buf, in->pitch,
frame->data[0], frame->linesize[0],
frame->width, frame->height);
buf += off;
av_image_copy_plane(buf, in->pitch,
frame->data[1], frame->linesize[1],
frame->width, frame->height >> 1);
break;
case AV_PIX_FMT_YUV444P:
av_image_copy_plane(buf, in->pitch,
frame->data[0], frame->linesize[0],
frame->width, frame->height);
buf += off;
av_image_copy_plane(buf, in->pitch,
frame->data[1], frame->linesize[1],
frame->width, frame->height);
buf += off;
av_image_copy_plane(buf, in->pitch,
frame->data[2], frame->linesize[2],
frame->width, frame->height);
break;
default:
return AVERROR_BUG;
}
return 0;
}
static int nvenc_enqueue_frame(AVCodecContext *avctx, const AVFrame *frame,
NVENCInputSurface **in_surf)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_LOCK_INPUT_BUFFER params = { 0 };
NVENCInputSurface *in = get_input_surface(ctx);
int ret;
if (!in)
return AVERROR_BUG;
params.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
params.inputBuffer = in->in;
ret = nv->nvEncLockInputBuffer(ctx->nvenc_ctx, &params);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot lock the buffer");
ret = nvenc_copy_frame(&params, frame);
if (ret < 0)
goto fail;
ret = nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, in->in);
if (ret != NV_ENC_SUCCESS)
return nvenc_print_error(avctx, ret, "Cannot unlock the buffer");
*in_surf = in;
return 0;
fail:
nv->nvEncUnlockInputBuffer(ctx->nvenc_ctx, in->in);
return ret;
}
static void nvenc_codec_specific_pic_params(AVCodecContext *avctx,
NV_ENC_PIC_PARAMS *params)
{
NVENCContext *ctx = avctx->priv_data;
switch (avctx->codec->id) {
case AV_CODEC_ID_H264:
params->codecPicParams.h264PicParams.sliceMode =
ctx->config.encodeCodecConfig.h264Config.sliceMode;
params->codecPicParams.h264PicParams.sliceModeData =
ctx->config.encodeCodecConfig.h264Config.sliceModeData;
break;
case AV_CODEC_ID_HEVC:
params->codecPicParams.hevcPicParams.sliceMode =
ctx->config.encodeCodecConfig.hevcConfig.sliceMode;
params->codecPicParams.hevcPicParams.sliceModeData =
ctx->config.encodeCodecConfig.hevcConfig.sliceModeData;
break;
}
}
static inline int nvenc_enqueue_timestamp(AVFifoBuffer *f, int64_t pts)
{
return av_fifo_generic_write(f, &pts, sizeof(pts), NULL);
}
static inline int nvenc_dequeue_timestamp(AVFifoBuffer *f, int64_t *pts)
{
return av_fifo_generic_read(f, pts, sizeof(*pts), NULL);
}
static inline int nvenc_enqueue_surface(AVFifoBuffer *f,
NVENCOutputSurface *surf)
{
surf->busy = 1;
return av_fifo_generic_write(f, &surf, sizeof(surf), NULL);
}
static inline int nvenc_dequeue_surface(AVFifoBuffer *f,
NVENCOutputSurface **surf)
{
return av_fifo_generic_read(f, surf, sizeof(*surf), NULL);
}
static int nvenc_set_timestamp(AVCodecContext *avctx,
NV_ENC_LOCK_BITSTREAM *params,
AVPacket *pkt)
{
NVENCContext *ctx = avctx->priv_data;
pkt->pts = params->outputTimeStamp;
pkt->duration = params->outputDuration;
/* generate the first dts by linearly extrapolating the
* first two pts values to the past */
if (avctx->max_b_frames > 0 && !ctx->first_packet_output &&
ctx->initial_pts[1] != AV_NOPTS_VALUE) {
int64_t ts0 = ctx->initial_pts[0], ts1 = ctx->initial_pts[1];
int64_t delta;
if ((ts0 < 0 && ts1 > INT64_MAX + ts0) ||
(ts0 > 0 && ts1 < INT64_MIN + ts0))
return AVERROR(ERANGE);
delta = ts1 - ts0;
if ((delta < 0 && ts0 > INT64_MAX + delta) ||
(delta > 0 && ts0 < INT64_MIN + delta))
return AVERROR(ERANGE);
pkt->dts = ts0 - delta;
ctx->first_packet_output = 1;
return 0;
}
return nvenc_dequeue_timestamp(ctx->timestamps, &pkt->dts);
}
static int nvenc_get_frame(AVCodecContext *avctx, AVPacket *pkt)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_LOCK_BITSTREAM params = { 0 };
NVENCOutputSurface *out = NULL;
int ret;
ret = nvenc_dequeue_surface(ctx->ready, &out);
if (ret)
return ret;
params.version = NV_ENC_LOCK_BITSTREAM_VER;
params.outputBitstream = out->out;
ret = nv->nvEncLockBitstream(ctx->nvenc_ctx, &params);
if (ret < 0)
return nvenc_print_error(avctx, ret, "Cannot lock the bitstream");
ret = ff_alloc_packet(pkt, params.bitstreamSizeInBytes);
if (ret < 0)
return ret;
memcpy(pkt->data, params.bitstreamBufferPtr, pkt->size);
ret = nv->nvEncUnlockBitstream(ctx->nvenc_ctx, out->out);
if (ret < 0)
return nvenc_print_error(avctx, ret, "Cannot unlock the bitstream");
out->busy = out->in->locked = 0;
ret = nvenc_set_timestamp(avctx, &params, pkt);
if (ret < 0)
return ret;
switch (params.pictureType) {
case NV_ENC_PIC_TYPE_IDR:
pkt->flags |= AV_PKT_FLAG_KEY;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
case NV_ENC_PIC_TYPE_INTRA_REFRESH:
case NV_ENC_PIC_TYPE_I:
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
break;
case NV_ENC_PIC_TYPE_P:
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_P;
break;
case NV_ENC_PIC_TYPE_B:
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_B;
break;
case NV_ENC_PIC_TYPE_BI:
avctx->coded_frame->pict_type = AV_PICTURE_TYPE_BI;
break;
FF_ENABLE_DEPRECATION_WARNINGS
#endif
}
return 0;
}
static int output_ready(AVCodecContext *avctx, int flush)
{
NVENCContext *ctx = avctx->priv_data;
/* when B-frames are enabled, we wait for two initial timestamps to
* calculate the first dts */
if (!flush && avctx->max_b_frames > 0 &&
(ctx->initial_pts[0] == AV_NOPTS_VALUE || ctx->initial_pts[1] == AV_NOPTS_VALUE))
return 0;
return av_fifo_size(ctx->ready) > 0;
}
int ff_nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
NVENCContext *ctx = avctx->priv_data;
NV_ENCODE_API_FUNCTION_LIST *nv = &ctx->nvel.nvenc_funcs;
NV_ENC_PIC_PARAMS params = { 0 };
NVENCInputSurface *in = NULL;
NVENCOutputSurface *out = NULL;
int enc_ret, ret;
params.version = NV_ENC_PIC_PARAMS_VER;
if (frame) {
ret = nvenc_enqueue_frame(avctx, frame, &in);
if (ret < 0)
return ret;
out = get_output_surface(ctx);
if (!out)
return AVERROR_BUG;
out->in = in;
params.inputBuffer = in->in;
params.bufferFmt = in->format;
params.inputWidth = frame->width;
params.inputHeight = frame->height;
params.outputBitstream = out->out;
params.inputTimeStamp = frame->pts;
if (avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) {
if (frame->top_field_first)
params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_TOP_BOTTOM;
else
params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_BOTTOM_TOP;
} else {
params.pictureStruct = NV_ENC_PIC_STRUCT_FRAME;
}
nvenc_codec_specific_pic_params(avctx, &params);
ret = nvenc_enqueue_timestamp(ctx->timestamps, frame->pts);
if (ret < 0)
return ret;
if (ctx->initial_pts[0] == AV_NOPTS_VALUE)
ctx->initial_pts[0] = frame->pts;
else if (ctx->initial_pts[1] == AV_NOPTS_VALUE)
ctx->initial_pts[1] = frame->pts;
} else {
params.encodePicFlags = NV_ENC_PIC_FLAG_EOS;
}
enc_ret = nv->nvEncEncodePicture(ctx->nvenc_ctx, &params);
if (enc_ret != NV_ENC_SUCCESS &&
enc_ret != NV_ENC_ERR_NEED_MORE_INPUT)
return nvenc_print_error(avctx, enc_ret, "Error encoding the frame");
if (out) {
ret = nvenc_enqueue_surface(ctx->pending, out);
if (ret < 0)
return ret;
}
/* all the pending buffers are now ready for output */
if (enc_ret == NV_ENC_SUCCESS) {
while (av_fifo_size(ctx->pending) > 0) {
av_fifo_generic_read(ctx->pending, &out, sizeof(out), NULL);
av_fifo_generic_write(ctx->ready, &out, sizeof(out), NULL);
}
}
if (output_ready(avctx, !frame)) {
ret = nvenc_get_frame(avctx, pkt);
if (ret < 0)
return ret;
*got_packet = 1;
} else {
*got_packet = 0;
}
return 0;
}
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