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ffmpeg/libavcodec/nvenc.c

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/*
* H.264 hardware encoding using nvidia nvenc
* Copyright (c) 2014 Timo Rothenpieler <timo@rothenpieler.org>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if defined(_WIN32)
#include <windows.h>
#else
#include <dlfcn.h>
#endif
#include <nvEncodeAPI.h>
#include "libavutil/internal.h"
#include "libavutil/imgutils.h"
#include "libavutil/avassert.h"
#include "libavutil/opt.h"
#include "libavutil/mem.h"
#include "avcodec.h"
#include "internal.h"
#include "thread.h"
#if defined(_WIN32)
#define CUDAAPI __stdcall
#else
#define CUDAAPI
#endif
#if defined(_WIN32)
#define LOAD_FUNC(l, s) GetProcAddress(l, s)
#define DL_CLOSE_FUNC(l) FreeLibrary(l)
#else
#define LOAD_FUNC(l, s) dlsym(l, s)
#define DL_CLOSE_FUNC(l) dlclose(l)
#endif
typedef enum cudaError_enum {
CUDA_SUCCESS = 0
} CUresult;
typedef int CUdevice;
typedef void* CUcontext;
typedef CUresult(CUDAAPI *PCUINIT)(unsigned int Flags);
typedef CUresult(CUDAAPI *PCUDEVICEGETCOUNT)(int *count);
typedef CUresult(CUDAAPI *PCUDEVICEGET)(CUdevice *device, int ordinal);
typedef CUresult(CUDAAPI *PCUDEVICEGETNAME)(char *name, int len, CUdevice dev);
typedef CUresult(CUDAAPI *PCUDEVICECOMPUTECAPABILITY)(int *major, int *minor, CUdevice dev);
typedef CUresult(CUDAAPI *PCUCTXCREATE)(CUcontext *pctx, unsigned int flags, CUdevice dev);
typedef CUresult(CUDAAPI *PCUCTXPOPCURRENT)(CUcontext *pctx);
typedef CUresult(CUDAAPI *PCUCTXDESTROY)(CUcontext ctx);
typedef NVENCSTATUS (NVENCAPI* PNVENCODEAPICREATEINSTANCE)(NV_ENCODE_API_FUNCTION_LIST *functionList);
#if NVENCAPI_MAJOR_VERSION < 5
static const GUID dummy_license = { 0x0, 0x0, 0x0, { 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0 } };
#endif
typedef struct NvencInputSurface
{
NV_ENC_INPUT_PTR input_surface;
int width;
int height;
int lockCount;
NV_ENC_BUFFER_FORMAT format;
} NvencInputSurface;
typedef struct NvencOutputSurface
{
NV_ENC_OUTPUT_PTR output_surface;
int size;
NvencInputSurface* input_surface;
int busy;
} NvencOutputSurface;
typedef struct NvencData
{
union {
int64_t timestamp;
NvencOutputSurface *surface;
};
} NvencData;
typedef struct NvencDataList
{
NvencData* data;
uint32_t pos;
uint32_t count;
uint32_t size;
} NvencDataList;
typedef struct NvencDynLoadFunctions
{
PCUINIT cu_init;
PCUDEVICEGETCOUNT cu_device_get_count;
PCUDEVICEGET cu_device_get;
PCUDEVICEGETNAME cu_device_get_name;
PCUDEVICECOMPUTECAPABILITY cu_device_compute_capability;
PCUCTXCREATE cu_ctx_create;
PCUCTXPOPCURRENT cu_ctx_pop_current;
PCUCTXDESTROY cu_ctx_destroy;
NV_ENCODE_API_FUNCTION_LIST nvenc_funcs;
int nvenc_device_count;
CUdevice nvenc_devices[16];
#if defined(_WIN32)
HMODULE cuda_lib;
HMODULE nvenc_lib;
#else
void* cuda_lib;
void* nvenc_lib;
#endif
} NvencDynLoadFunctions;
typedef struct NvencContext
{
AVClass *avclass;
NvencDynLoadFunctions nvenc_dload_funcs;
NV_ENC_INITIALIZE_PARAMS init_encode_params;
NV_ENC_CONFIG encode_config;
CUcontext cu_context;
int max_surface_count;
NvencInputSurface *input_surfaces;
NvencOutputSurface *output_surfaces;
NvencDataList output_surface_queue;
NvencDataList output_surface_ready_queue;
NvencDataList timestamp_list;
int64_t last_dts;
void *nvencoder;
char *preset;
int cbr;
int twopass;
int gpu;
} NvencContext;
static NvencData* data_queue_dequeue(NvencDataList* queue)
{
uint32_t mask;
uint32_t read_pos;
av_assert0(queue);
av_assert0(queue->size);
av_assert0(queue->data);
if (!queue->count)
return NULL;
/* Size always is a multiple of two */
mask = queue->size - 1;
read_pos = (queue->pos - queue->count) & mask;
queue->count--;
return &queue->data[read_pos];
}
static int data_queue_enqueue(NvencDataList* queue, NvencData *data)
{
NvencDataList new_queue;
NvencData* tmp_data;
uint32_t mask;
if (!queue->size) {
/* size always has to be a multiple of two */
queue->size = 4;
queue->pos = 0;
queue->count = 0;
queue->data = av_malloc(queue->size * sizeof(*(queue->data)));
if (!queue->data) {
queue->size = 0;
return AVERROR(ENOMEM);
}
}
if (queue->count == queue->size) {
new_queue.size = queue->size << 1;
new_queue.pos = 0;
new_queue.count = 0;
new_queue.data = av_malloc(new_queue.size * sizeof(*(queue->data)));
if (!new_queue.data)
return AVERROR(ENOMEM);
while (tmp_data = data_queue_dequeue(queue))
data_queue_enqueue(&new_queue, tmp_data);
av_free(queue->data);
*queue = new_queue;
}
mask = queue->size - 1;
queue->data[queue->pos] = *data;
queue->pos = (queue->pos + 1) & mask;
queue->count++;
return 0;
}
static int out_surf_queue_enqueue(NvencDataList* queue, NvencOutputSurface* surface)
{
NvencData data;
data.surface = surface;
return data_queue_enqueue(queue, &data);
}
static NvencOutputSurface* out_surf_queue_dequeue(NvencDataList* queue)
{
NvencData* res = data_queue_dequeue(queue);
if (!res)
return NULL;
return res->surface;
}
static int timestamp_queue_enqueue(NvencDataList* queue, int64_t timestamp)
{
NvencData data;
data.timestamp = timestamp;
return data_queue_enqueue(queue, &data);
}
static int64_t timestamp_queue_dequeue(NvencDataList* queue)
{
NvencData* res = data_queue_dequeue(queue);
if (!res)
return AV_NOPTS_VALUE;
return res->timestamp;
}
#define CHECK_LOAD_FUNC(t, f, s) \
do { \
(f) = (t)LOAD_FUNC(dl_fn->cuda_lib, s); \
if (!(f)) { \
av_log(avctx, AV_LOG_FATAL, "Failed loading %s from CUDA library\n", s); \
goto error; \
} \
} while (0)
static av_cold int nvenc_dyload_cuda(AVCodecContext *avctx)
{
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
if (dl_fn->cuda_lib)
return 1;
#if defined(_WIN32)
dl_fn->cuda_lib = LoadLibrary(TEXT("nvcuda.dll"));
#else
dl_fn->cuda_lib = dlopen("libcuda.so", RTLD_LAZY);
#endif
if (!dl_fn->cuda_lib) {
av_log(avctx, AV_LOG_FATAL, "Failed loading CUDA library\n");
goto error;
}
CHECK_LOAD_FUNC(PCUINIT, dl_fn->cu_init, "cuInit");
CHECK_LOAD_FUNC(PCUDEVICEGETCOUNT, dl_fn->cu_device_get_count, "cuDeviceGetCount");
CHECK_LOAD_FUNC(PCUDEVICEGET, dl_fn->cu_device_get, "cuDeviceGet");
CHECK_LOAD_FUNC(PCUDEVICEGETNAME, dl_fn->cu_device_get_name, "cuDeviceGetName");
CHECK_LOAD_FUNC(PCUDEVICECOMPUTECAPABILITY, dl_fn->cu_device_compute_capability, "cuDeviceComputeCapability");
CHECK_LOAD_FUNC(PCUCTXCREATE, dl_fn->cu_ctx_create, "cuCtxCreate_v2");
CHECK_LOAD_FUNC(PCUCTXPOPCURRENT, dl_fn->cu_ctx_pop_current, "cuCtxPopCurrent_v2");
CHECK_LOAD_FUNC(PCUCTXDESTROY, dl_fn->cu_ctx_destroy, "cuCtxDestroy_v2");
return 1;
error:
if (dl_fn->cuda_lib)
DL_CLOSE_FUNC(dl_fn->cuda_lib);
dl_fn->cuda_lib = NULL;
return 0;
}
static av_cold int check_cuda_errors(AVCodecContext *avctx, CUresult err, const char *func)
{
if (err != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, ">> %s - failed with error code 0x%x\n", func, err);
return 0;
}
return 1;
}
#define check_cuda_errors(f) if (!check_cuda_errors(avctx, f, #f)) goto error
static av_cold int nvenc_check_cuda(AVCodecContext *avctx)
{
int device_count = 0;
CUdevice cu_device = 0;
char gpu_name[128];
int smminor = 0, smmajor = 0;
int i, smver;
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
if (!nvenc_dyload_cuda(avctx))
return 0;
if (dl_fn->nvenc_device_count > 0)
return 1;
check_cuda_errors(dl_fn->cu_init(0));
check_cuda_errors(dl_fn->cu_device_get_count(&device_count));
if (!device_count) {
av_log(avctx, AV_LOG_FATAL, "No CUDA capable devices found\n");
goto error;
}
av_log(avctx, AV_LOG_VERBOSE, "%d CUDA capable devices found\n", device_count);
dl_fn->nvenc_device_count = 0;
for (i = 0; i < device_count; ++i) {
check_cuda_errors(dl_fn->cu_device_get(&cu_device, i));
check_cuda_errors(dl_fn->cu_device_get_name(gpu_name, sizeof(gpu_name), cu_device));
check_cuda_errors(dl_fn->cu_device_compute_capability(&smmajor, &smminor, cu_device));
smver = (smmajor << 4) | smminor;
av_log(avctx, AV_LOG_VERBOSE, "[ GPU #%d - < %s > has Compute SM %d.%d, NVENC %s ]\n", i, gpu_name, smmajor, smminor, (smver >= 0x30) ? "Available" : "Not Available");
if (smver >= 0x30)
dl_fn->nvenc_devices[dl_fn->nvenc_device_count++] = cu_device;
}
if (!dl_fn->nvenc_device_count) {
av_log(avctx, AV_LOG_FATAL, "No NVENC capable devices found\n");
goto error;
}
return 1;
error:
dl_fn->nvenc_device_count = 0;
return 0;
}
static av_cold int nvenc_dyload_nvenc(AVCodecContext *avctx)
{
PNVENCODEAPICREATEINSTANCE nvEncodeAPICreateInstance = 0;
NVENCSTATUS nvstatus;
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
if (!nvenc_check_cuda(avctx))
return 0;
if (dl_fn->nvenc_lib)
return 1;
#if defined(_WIN32)
if (sizeof(void*) == 8) {
dl_fn->nvenc_lib = LoadLibrary(TEXT("nvEncodeAPI64.dll"));
} else {
dl_fn->nvenc_lib = LoadLibrary(TEXT("nvEncodeAPI.dll"));
}
#else
dl_fn->nvenc_lib = dlopen("libnvidia-encode.so.1", RTLD_LAZY);
#endif
if (!dl_fn->nvenc_lib) {
av_log(avctx, AV_LOG_FATAL, "Failed loading the nvenc library\n");
goto error;
}
nvEncodeAPICreateInstance = (PNVENCODEAPICREATEINSTANCE)LOAD_FUNC(dl_fn->nvenc_lib, "NvEncodeAPICreateInstance");
if (!nvEncodeAPICreateInstance) {
av_log(avctx, AV_LOG_FATAL, "Failed to load nvenc entrypoint\n");
goto error;
}
dl_fn->nvenc_funcs.version = NV_ENCODE_API_FUNCTION_LIST_VER;
nvstatus = nvEncodeAPICreateInstance(&dl_fn->nvenc_funcs);
if (nvstatus != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed to create nvenc instance\n");
goto error;
}
av_log(avctx, AV_LOG_VERBOSE, "Nvenc initialized successfully\n");
return 1;
error:
if (dl_fn->nvenc_lib)
DL_CLOSE_FUNC(dl_fn->nvenc_lib);
dl_fn->nvenc_lib = NULL;
return 0;
}
static av_cold void nvenc_unload_nvenc(AVCodecContext *avctx)
{
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
DL_CLOSE_FUNC(dl_fn->nvenc_lib);
dl_fn->nvenc_lib = NULL;
dl_fn->nvenc_device_count = 0;
DL_CLOSE_FUNC(dl_fn->cuda_lib);
dl_fn->cuda_lib = NULL;
dl_fn->cu_init = NULL;
dl_fn->cu_device_get_count = NULL;
dl_fn->cu_device_get = NULL;
dl_fn->cu_device_get_name = NULL;
dl_fn->cu_device_compute_capability = NULL;
dl_fn->cu_ctx_create = NULL;
dl_fn->cu_ctx_pop_current = NULL;
dl_fn->cu_ctx_destroy = NULL;
av_log(avctx, AV_LOG_VERBOSE, "Nvenc unloaded\n");
}
static av_cold int nvenc_encode_init(AVCodecContext *avctx)
{
NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS encode_session_params = { 0 };
NV_ENC_PRESET_CONFIG preset_config = { 0 };
CUcontext cu_context_curr;
CUresult cu_res;
GUID encoder_preset = NV_ENC_PRESET_HQ_GUID;
NVENCSTATUS nv_status = NV_ENC_SUCCESS;
int surfaceCount = 0;
int i, num_mbs;
int isLL = 0;
int res = 0;
int dw, dh;
#if NVENCAPI_MAJOR_VERSION < 5
GUID license = dummy_license;
#endif
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
NV_ENCODE_API_FUNCTION_LIST *p_nvenc = &dl_fn->nvenc_funcs;
if (!nvenc_dyload_nvenc(avctx))
return AVERROR_EXTERNAL;
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
res = AVERROR(ENOMEM);
goto error;
}
ctx->last_dts = AV_NOPTS_VALUE;
ctx->encode_config.version = NV_ENC_CONFIG_VER;
ctx->init_encode_params.version = NV_ENC_INITIALIZE_PARAMS_VER;
preset_config.version = NV_ENC_PRESET_CONFIG_VER;
preset_config.presetCfg.version = NV_ENC_CONFIG_VER;
encode_session_params.version = NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER;
encode_session_params.apiVersion = NVENCAPI_VERSION;
#if NVENCAPI_MAJOR_VERSION < 5
encode_session_params.clientKeyPtr = &license;
#endif
if (ctx->gpu >= dl_fn->nvenc_device_count) {
av_log(avctx, AV_LOG_FATAL, "Requested GPU %d, but only %d GPUs are available!\n", ctx->gpu, dl_fn->nvenc_device_count);
res = AVERROR(EINVAL);
goto error;
}
ctx->cu_context = NULL;
cu_res = dl_fn->cu_ctx_create(&ctx->cu_context, 0, dl_fn->nvenc_devices[ctx->gpu]);
if (cu_res != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed creating CUDA context for NVENC: 0x%x\n", (int)cu_res);
res = AVERROR_EXTERNAL;
goto error;
}
cu_res = dl_fn->cu_ctx_pop_current(&cu_context_curr);
if (cu_res != CUDA_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed popping CUDA context: 0x%x\n", (int)cu_res);
res = AVERROR_EXTERNAL;
goto error;
}
encode_session_params.device = ctx->cu_context;
encode_session_params.deviceType = NV_ENC_DEVICE_TYPE_CUDA;
nv_status = p_nvenc->nvEncOpenEncodeSessionEx(&encode_session_params, &ctx->nvencoder);
if (nv_status != NV_ENC_SUCCESS) {
ctx->nvencoder = NULL;
av_log(avctx, AV_LOG_FATAL, "OpenEncodeSessionEx failed: 0x%x - invalid license key?\n", (int)nv_status);
res = AVERROR_EXTERNAL;
goto error;
}
if (ctx->preset) {
if (!strcmp(ctx->preset, "hp")) {
encoder_preset = NV_ENC_PRESET_HP_GUID;
} else if (!strcmp(ctx->preset, "hq")) {
encoder_preset = NV_ENC_PRESET_HQ_GUID;
} else if (!strcmp(ctx->preset, "bd")) {
encoder_preset = NV_ENC_PRESET_BD_GUID;
} else if (!strcmp(ctx->preset, "ll")) {
encoder_preset = NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID;
isLL = 1;
} else if (!strcmp(ctx->preset, "llhp")) {
encoder_preset = NV_ENC_PRESET_LOW_LATENCY_HP_GUID;
isLL = 1;
} else if (!strcmp(ctx->preset, "llhq")) {
encoder_preset = NV_ENC_PRESET_LOW_LATENCY_HQ_GUID;
isLL = 1;
} else if (!strcmp(ctx->preset, "default")) {
encoder_preset = NV_ENC_PRESET_DEFAULT_GUID;
} else {
av_log(avctx, AV_LOG_FATAL, "Preset \"%s\" is unknown! Supported presets: hp, hq, bd, ll, llhp, llhq, default\n", ctx->preset);
res = AVERROR(EINVAL);
goto error;
}
}
nv_status = p_nvenc->nvEncGetEncodePresetConfig(ctx->nvencoder, NV_ENC_CODEC_H264_GUID, encoder_preset, &preset_config);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "GetEncodePresetConfig failed: 0x%x\n", (int)nv_status);
res = AVERROR_EXTERNAL;
goto error;
}
ctx->init_encode_params.encodeGUID = NV_ENC_CODEC_H264_GUID;
ctx->init_encode_params.encodeHeight = avctx->height;
ctx->init_encode_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.num != 1)) {
av_reduce(&dw, &dh,
avctx->width * avctx->sample_aspect_ratio.num,
avctx->height * avctx->sample_aspect_ratio.den,
1024 * 1024);
ctx->init_encode_params.darHeight = dh;
ctx->init_encode_params.darWidth = dw;
} else {
ctx->init_encode_params.darHeight = avctx->height;
ctx->init_encode_params.darWidth = avctx->width;
}
// De-compensate for hardware, dubiously, trying to compensate for
// playback at 704 pixel width.
if (avctx->width == 720 &&
(avctx->height == 480 || avctx->height == 576)) {
av_reduce(&dw, &dh,
ctx->init_encode_params.darWidth * 44,
ctx->init_encode_params.darHeight * 45,
1024 * 1204);
ctx->init_encode_params.darHeight = dh;
ctx->init_encode_params.darWidth = dw;
}
ctx->init_encode_params.frameRateNum = avctx->time_base.den;
ctx->init_encode_params.frameRateDen = avctx->time_base.num * avctx->ticks_per_frame;
num_mbs = ((avctx->width + 15) >> 4) * ((avctx->height + 15) >> 4);
ctx->max_surface_count = (num_mbs >= 8160) ? 32 : 48;
ctx->init_encode_params.enableEncodeAsync = 0;
ctx->init_encode_params.enablePTD = 1;
ctx->init_encode_params.presetGUID = encoder_preset;
ctx->init_encode_params.encodeConfig = &ctx->encode_config;
memcpy(&ctx->encode_config, &preset_config.presetCfg, sizeof(ctx->encode_config));
ctx->encode_config.version = NV_ENC_CONFIG_VER;
if (avctx->refs >= 0) {
/* 0 means "let the hardware decide" */
ctx->encode_config.encodeCodecConfig.h264Config.maxNumRefFrames = avctx->refs;
}
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->encode_config.frameIntervalP = avctx->max_b_frames + 1;
}
ctx->encode_config.gopLength = avctx->gop_size;
ctx->encode_config.encodeCodecConfig.h264Config.idrPeriod = avctx->gop_size;
} else if (avctx->gop_size == 0) {
ctx->encode_config.frameIntervalP = 0;
ctx->encode_config.gopLength = 1;
ctx->encode_config.encodeCodecConfig.h264Config.idrPeriod = 1;
}
/* when there're b frames, set dts offset */
if (ctx->encode_config.frameIntervalP >= 2)
ctx->last_dts = -2;
if (avctx->bit_rate > 0)
ctx->encode_config.rcParams.averageBitRate = avctx->bit_rate;
if (avctx->rc_max_rate > 0)
ctx->encode_config.rcParams.maxBitRate = avctx->rc_max_rate;
if (ctx->cbr) {
if (!ctx->twopass) {
ctx->encode_config.rcParams.rateControlMode = NV_ENC_PARAMS_RC_CBR;
} else if (ctx->twopass == 1 || isLL) {
ctx->encode_config.rcParams.rateControlMode = NV_ENC_PARAMS_RC_2_PASS_QUALITY;
ctx->encode_config.encodeCodecConfig.h264Config.adaptiveTransformMode = NV_ENC_H264_ADAPTIVE_TRANSFORM_ENABLE;
ctx->encode_config.encodeCodecConfig.h264Config.fmoMode = NV_ENC_H264_FMO_DISABLE;
if (!isLL)
av_log(avctx, AV_LOG_WARNING, "Twopass mode is only known to work with low latency (ll, llhq, llhp) presets.\n");
} else {
ctx->encode_config.rcParams.rateControlMode = NV_ENC_PARAMS_RC_CBR;
}
} else if (avctx->global_quality > 0) {
ctx->encode_config.rcParams.rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
ctx->encode_config.rcParams.constQP.qpInterB = avctx->global_quality;
ctx->encode_config.rcParams.constQP.qpInterP = avctx->global_quality;
ctx->encode_config.rcParams.constQP.qpIntra = avctx->global_quality;
avctx->qmin = -1;
avctx->qmax = -1;
} else if (avctx->qmin >= 0 && avctx->qmax >= 0) {
ctx->encode_config.rcParams.rateControlMode = NV_ENC_PARAMS_RC_VBR;
ctx->encode_config.rcParams.enableMinQP = 1;
ctx->encode_config.rcParams.enableMaxQP = 1;
ctx->encode_config.rcParams.minQP.qpInterB = avctx->qmin;
ctx->encode_config.rcParams.minQP.qpInterP = avctx->qmin;
ctx->encode_config.rcParams.minQP.qpIntra = avctx->qmin;
ctx->encode_config.rcParams.maxQP.qpInterB = avctx->qmax;
ctx->encode_config.rcParams.maxQP.qpInterP = avctx->qmax;
ctx->encode_config.rcParams.maxQP.qpIntra = avctx->qmax;
}
if (avctx->rc_buffer_size > 0)
ctx->encode_config.rcParams.vbvBufferSize = avctx->rc_buffer_size;
if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
ctx->encode_config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FIELD;
} else {
ctx->encode_config.frameFieldMode = NV_ENC_PARAMS_FRAME_FIELD_MODE_FRAME;
}
switch (avctx->profile) {
case FF_PROFILE_H264_BASELINE:
ctx->encode_config.profileGUID = NV_ENC_H264_PROFILE_BASELINE_GUID;
break;
case FF_PROFILE_H264_MAIN:
ctx->encode_config.profileGUID = NV_ENC_H264_PROFILE_MAIN_GUID;
break;
case FF_PROFILE_H264_HIGH:
case FF_PROFILE_UNKNOWN:
ctx->encode_config.profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
break;
default:
av_log(avctx, AV_LOG_WARNING, "Unsupported h264 profile requested, falling back to high\n");
ctx->encode_config.profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
break;
}
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.colourDescriptionPresentFlag = 1;
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.videoSignalTypePresentFlag = 1;
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.colourMatrix = avctx->colorspace;
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.colourPrimaries = avctx->color_primaries;
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.transferCharacteristics = avctx->color_trc;
ctx->encode_config.encodeCodecConfig.h264Config.h264VUIParameters.videoFullRangeFlag = avctx->color_range == AVCOL_RANGE_JPEG;
ctx->encode_config.encodeCodecConfig.h264Config.disableSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 1 : 0;
ctx->encode_config.encodeCodecConfig.h264Config.repeatSPSPPS = (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) ? 0 : 1;
nv_status = p_nvenc->nvEncInitializeEncoder(ctx->nvencoder, &ctx->init_encode_params);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "InitializeEncoder failed: 0x%x\n", (int)nv_status);
res = AVERROR_EXTERNAL;
goto error;
}
ctx->input_surfaces = av_malloc(ctx->max_surface_count * sizeof(*ctx->input_surfaces));
if (!ctx->input_surfaces) {
res = AVERROR(ENOMEM);
goto error;
}
ctx->output_surfaces = av_malloc(ctx->max_surface_count * sizeof(*ctx->output_surfaces));
if (!ctx->output_surfaces) {
res = AVERROR(ENOMEM);
goto error;
}
for (surfaceCount = 0; surfaceCount < ctx->max_surface_count; ++surfaceCount) {
NV_ENC_CREATE_INPUT_BUFFER allocSurf = { 0 };
NV_ENC_CREATE_BITSTREAM_BUFFER allocOut = { 0 };
allocSurf.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
allocOut.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
allocSurf.width = (avctx->width + 31) & ~31;
allocSurf.height = (avctx->height + 31) & ~31;
allocSurf.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_CACHED;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV420P:
allocSurf.bufferFmt = NV_ENC_BUFFER_FORMAT_YV12_PL;
break;
case AV_PIX_FMT_NV12:
allocSurf.bufferFmt = NV_ENC_BUFFER_FORMAT_NV12_PL;
break;
case AV_PIX_FMT_YUV444P:
allocSurf.bufferFmt = NV_ENC_BUFFER_FORMAT_YUV444_PL;
break;
default:
av_log(avctx, AV_LOG_FATAL, "Invalid input pixel format\n");
res = AVERROR(EINVAL);
goto error;
}
nv_status = p_nvenc->nvEncCreateInputBuffer(ctx->nvencoder, &allocSurf);
if (nv_status = NV_ENC_SUCCESS){
av_log(avctx, AV_LOG_FATAL, "CreateInputBuffer failed\n");
res = AVERROR_EXTERNAL;
goto error;
}
ctx->input_surfaces[surfaceCount].lockCount = 0;
ctx->input_surfaces[surfaceCount].input_surface = allocSurf.inputBuffer;
ctx->input_surfaces[surfaceCount].format = allocSurf.bufferFmt;
ctx->input_surfaces[surfaceCount].width = allocSurf.width;
ctx->input_surfaces[surfaceCount].height = allocSurf.height;
/* 1MB is large enough to hold most output frames. NVENC increases this automaticaly if it's not enough. */
allocOut.size = 1024 * 1024;
allocOut.memoryHeap = NV_ENC_MEMORY_HEAP_SYSMEM_CACHED;
nv_status = p_nvenc->nvEncCreateBitstreamBuffer(ctx->nvencoder, &allocOut);
if (nv_status = NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "CreateBitstreamBuffer failed\n");
ctx->output_surfaces[surfaceCount++].output_surface = NULL;
res = AVERROR_EXTERNAL;
goto error;
}
ctx->output_surfaces[surfaceCount].output_surface = allocOut.bitstreamBuffer;
ctx->output_surfaces[surfaceCount].size = allocOut.size;
ctx->output_surfaces[surfaceCount].busy = 0;
}
if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
uint32_t outSize = 0;
char tmpHeader[256];
NV_ENC_SEQUENCE_PARAM_PAYLOAD payload = { 0 };
payload.version = NV_ENC_SEQUENCE_PARAM_PAYLOAD_VER;
payload.spsppsBuffer = tmpHeader;
payload.inBufferSize = sizeof(tmpHeader);
payload.outSPSPPSPayloadSize = &outSize;
nv_status = p_nvenc->nvEncGetSequenceParams(ctx->nvencoder, &payload);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "GetSequenceParams failed\n");
goto error;
}
avctx->extradata_size = outSize;
avctx->extradata = av_mallocz(outSize + FF_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
res = AVERROR(ENOMEM);
goto error;
}
memcpy(avctx->extradata, tmpHeader, outSize);
}
if (ctx->encode_config.frameIntervalP > 1)
avctx->has_b_frames = 2;
if (ctx->encode_config.rcParams.averageBitRate > 0)
avctx->bit_rate = ctx->encode_config.rcParams.averageBitRate;
return 0;
error:
for (i = 0; i < surfaceCount; ++i) {
p_nvenc->nvEncDestroyInputBuffer(ctx->nvencoder, ctx->input_surfaces[i].input_surface);
if (ctx->output_surfaces[i].output_surface)
p_nvenc->nvEncDestroyBitstreamBuffer(ctx->nvencoder, ctx->output_surfaces[i].output_surface);
}
if (ctx->nvencoder)
p_nvenc->nvEncDestroyEncoder(ctx->nvencoder);
if (ctx->cu_context)
dl_fn->cu_ctx_destroy(ctx->cu_context);
av_frame_free(&avctx->coded_frame);
nvenc_unload_nvenc(avctx);
ctx->nvencoder = NULL;
ctx->cu_context = NULL;
return res;
}
static av_cold int nvenc_encode_close(AVCodecContext *avctx)
{
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
NV_ENCODE_API_FUNCTION_LIST *p_nvenc = &dl_fn->nvenc_funcs;
int i;
av_freep(&ctx->timestamp_list.data);
av_freep(&ctx->output_surface_ready_queue.data);
av_freep(&ctx->output_surface_queue.data);
for (i = 0; i < ctx->max_surface_count; ++i) {
p_nvenc->nvEncDestroyInputBuffer(ctx->nvencoder, ctx->input_surfaces[i].input_surface);
p_nvenc->nvEncDestroyBitstreamBuffer(ctx->nvencoder, ctx->output_surfaces[i].output_surface);
}
ctx->max_surface_count = 0;
p_nvenc->nvEncDestroyEncoder(ctx->nvencoder);
ctx->nvencoder = NULL;
dl_fn->cu_ctx_destroy(ctx->cu_context);
ctx->cu_context = NULL;
nvenc_unload_nvenc(avctx);
av_frame_free(&avctx->coded_frame);
return 0;
}
static int process_output_surface(AVCodecContext *avctx, AVPacket *pkt, AVFrame *coded_frame, NvencOutputSurface *tmpoutsurf)
{
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
NV_ENCODE_API_FUNCTION_LIST *p_nvenc = &dl_fn->nvenc_funcs;
uint32_t *slice_offsets = av_mallocz(ctx->encode_config.encodeCodecConfig.h264Config.sliceModeData * sizeof(*slice_offsets));
NV_ENC_LOCK_BITSTREAM lock_params = { 0 };
NVENCSTATUS nv_status;
int res = 0;
if (!slice_offsets)
return AVERROR(ENOMEM);
lock_params.version = NV_ENC_LOCK_BITSTREAM_VER;
lock_params.doNotWait = 0;
lock_params.outputBitstream = tmpoutsurf->output_surface;
lock_params.sliceOffsets = slice_offsets;
nv_status = p_nvenc->nvEncLockBitstream(ctx->nvencoder, &lock_params);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed locking bitstream buffer\n");
res = AVERROR_EXTERNAL;
goto error;
}
if (res = ff_alloc_packet2(avctx, pkt, lock_params.bitstreamSizeInBytes)) {
p_nvenc->nvEncUnlockBitstream(ctx->nvencoder, tmpoutsurf->output_surface);
goto error;
}
memcpy(pkt->data, lock_params.bitstreamBufferPtr, lock_params.bitstreamSizeInBytes);
nv_status = p_nvenc->nvEncUnlockBitstream(ctx->nvencoder, tmpoutsurf->output_surface);
if (nv_status != NV_ENC_SUCCESS)
av_log(avctx, AV_LOG_ERROR, "Failed unlocking bitstream buffer, expect the gates of mordor to open\n");
switch (lock_params.pictureType) {
case NV_ENC_PIC_TYPE_IDR:
pkt->flags |= AV_PKT_FLAG_KEY;
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;
default:
av_log(avctx, AV_LOG_ERROR, "Unknown picture type encountered, expect the output to be broken.\n");
av_log(avctx, AV_LOG_ERROR, "Please report this error and include as much information on how to reproduce it as possible.\n");
res = AVERROR_EXTERNAL;
goto error;
}
pkt->pts = lock_params.outputTimeStamp;
pkt->dts = timestamp_queue_dequeue(&ctx->timestamp_list);
/* when there're b frame(s), set dts offset */
if (ctx->encode_config.frameIntervalP >= 2)
pkt->dts -= 1;
if (pkt->dts > pkt->pts)
pkt->dts = pkt->pts;
if (ctx->last_dts != AV_NOPTS_VALUE && pkt->dts <= ctx->last_dts)
pkt->dts = ctx->last_dts + 1;
ctx->last_dts = pkt->dts;
av_free(slice_offsets);
return 0;
error:
av_free(slice_offsets);
timestamp_queue_dequeue(&ctx->timestamp_list);
return res;
}
static int nvenc_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *frame, int *got_packet)
{
NVENCSTATUS nv_status;
NvencOutputSurface *tmpoutsurf;
int res, i = 0;
NvencContext *ctx = avctx->priv_data;
NvencDynLoadFunctions *dl_fn = &ctx->nvenc_dload_funcs;
NV_ENCODE_API_FUNCTION_LIST *p_nvenc = &dl_fn->nvenc_funcs;
NV_ENC_PIC_PARAMS pic_params = { 0 };
pic_params.version = NV_ENC_PIC_PARAMS_VER;
if (frame) {
NV_ENC_LOCK_INPUT_BUFFER lockBufferParams = { 0 };
NvencInputSurface *inSurf = NULL;
for (i = 0; i < ctx->max_surface_count; ++i) {
if (!ctx->input_surfaces[i].lockCount) {
inSurf = &ctx->input_surfaces[i];
break;
}
}
av_assert0(inSurf);
inSurf->lockCount = 1;
lockBufferParams.version = NV_ENC_LOCK_INPUT_BUFFER_VER;
lockBufferParams.inputBuffer = inSurf->input_surface;
nv_status = p_nvenc->nvEncLockInputBuffer(ctx->nvencoder, &lockBufferParams);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_ERROR, "Failed locking nvenc input buffer\n");
return 0;
}
if (avctx->pix_fmt == AV_PIX_FMT_YUV420P) {
uint8_t *buf = lockBufferParams.bufferDataPtr;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[0], frame->linesize[0],
avctx->width, avctx->height);
buf += inSurf->height * lockBufferParams.pitch;
av_image_copy_plane(buf, lockBufferParams.pitch >> 1,
frame->data[2], frame->linesize[2],
avctx->width >> 1, avctx->height >> 1);
buf += (inSurf->height * lockBufferParams.pitch) >> 2;
av_image_copy_plane(buf, lockBufferParams.pitch >> 1,
frame->data[1], frame->linesize[1],
avctx->width >> 1, avctx->height >> 1);
} else if (avctx->pix_fmt == AV_PIX_FMT_NV12) {
uint8_t *buf = lockBufferParams.bufferDataPtr;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[0], frame->linesize[0],
avctx->width, avctx->height);
buf += inSurf->height * lockBufferParams.pitch;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[1], frame->linesize[1],
avctx->width, avctx->height >> 1);
} else if (avctx->pix_fmt == AV_PIX_FMT_YUV444P) {
uint8_t *buf = lockBufferParams.bufferDataPtr;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[0], frame->linesize[0],
avctx->width, avctx->height);
buf += inSurf->height * lockBufferParams.pitch;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[1], frame->linesize[1],
avctx->width, avctx->height);
buf += inSurf->height * lockBufferParams.pitch;
av_image_copy_plane(buf, lockBufferParams.pitch,
frame->data[2], frame->linesize[2],
avctx->width, avctx->height);
} else {
av_log(avctx, AV_LOG_FATAL, "Invalid pixel format!\n");
return AVERROR(EINVAL);
}
nv_status = p_nvenc->nvEncUnlockInputBuffer(ctx->nvencoder, inSurf->input_surface);
if (nv_status != NV_ENC_SUCCESS) {
av_log(avctx, AV_LOG_FATAL, "Failed unlocking input buffer!\n");
return AVERROR_EXTERNAL;
}
for (i = 0; i < ctx->max_surface_count; ++i)
if (!ctx->output_surfaces[i].busy)
break;
if (i == ctx->max_surface_count) {
inSurf->lockCount = 0;
av_log(avctx, AV_LOG_FATAL, "No free output surface found!\n");
return AVERROR_EXTERNAL;
}
ctx->output_surfaces[i].input_surface = inSurf;
pic_params.inputBuffer = inSurf->input_surface;
pic_params.bufferFmt = inSurf->format;
pic_params.inputWidth = avctx->width;
pic_params.inputHeight = avctx->height;
pic_params.outputBitstream = ctx->output_surfaces[i].output_surface;
pic_params.completionEvent = 0;
if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
if (frame->top_field_first) {
pic_params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_TOP_BOTTOM;
} else {
pic_params.pictureStruct = NV_ENC_PIC_STRUCT_FIELD_BOTTOM_TOP;
}
} else {
pic_params.pictureStruct = NV_ENC_PIC_STRUCT_FRAME;
}
pic_params.encodePicFlags = 0;
pic_params.inputTimeStamp = frame->pts;
pic_params.inputDuration = 0;
pic_params.codecPicParams.h264PicParams.sliceMode = ctx->encode_config.encodeCodecConfig.h264Config.sliceMode;
pic_params.codecPicParams.h264PicParams.sliceModeData = ctx->encode_config.encodeCodecConfig.h264Config.sliceModeData;
#if NVENCAPI_MAJOR_VERSION < 5
memcpy(&pic_params.rcParams, &ctx->encode_config.rcParams, sizeof(NV_ENC_RC_PARAMS));
#endif
res = timestamp_queue_enqueue(&ctx->timestamp_list, frame->pts);
if (res)
return res;
} else {
pic_params.encodePicFlags = NV_ENC_PIC_FLAG_EOS;
}
nv_status = p_nvenc->nvEncEncodePicture(ctx->nvencoder, &pic_params);
if (frame && nv_status == NV_ENC_ERR_NEED_MORE_INPUT) {
res = out_surf_queue_enqueue(&ctx->output_surface_queue, &ctx->output_surfaces[i]);
if (res)
return res;
ctx->output_surfaces[i].busy = 1;
}
if (nv_status != NV_ENC_SUCCESS && nv_status != NV_ENC_ERR_NEED_MORE_INPUT) {
av_log(avctx, AV_LOG_ERROR, "EncodePicture failed!\n");
return AVERROR_EXTERNAL;
}
if (nv_status != NV_ENC_ERR_NEED_MORE_INPUT) {
while (ctx->output_surface_queue.count) {
tmpoutsurf = out_surf_queue_dequeue(&ctx->output_surface_queue);
res = out_surf_queue_enqueue(&ctx->output_surface_ready_queue, tmpoutsurf);
if (res)
return res;
}
if (frame) {
res = out_surf_queue_enqueue(&ctx->output_surface_ready_queue, &ctx->output_surfaces[i]);
if (res)
return res;
ctx->output_surfaces[i].busy = 1;
}
}
if (ctx->output_surface_ready_queue.count) {
tmpoutsurf = out_surf_queue_dequeue(&ctx->output_surface_ready_queue);
res = process_output_surface(avctx, pkt, avctx->coded_frame, tmpoutsurf);
if (res)
return res;
tmpoutsurf->busy = 0;
av_assert0(tmpoutsurf->input_surface->lockCount);
tmpoutsurf->input_surface->lockCount--;
*got_packet = 1;
} else {
*got_packet = 0;
}
return 0;
}
static enum AVPixelFormat pix_fmts_nvenc[] = {
AV_PIX_FMT_NV12,
AV_PIX_FMT_NONE
};
#define OFFSET(x) offsetof(NvencContext, x)
#define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
static const AVOption options[] = {
{ "preset", "Set the encoding preset (one of hq, hp, bd, ll, llhq, llhp, default)", OFFSET(preset), AV_OPT_TYPE_STRING, { .str = "hq" }, 0, 0, VE },
{ "cbr", "Use cbr encoding mode", OFFSET(cbr), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
{ "2pass", "Use 2pass cbr encoding mode (low latency mode only)", OFFSET(twopass), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, VE },
{ "gpu", "Selects which NVENC capable GPU to use. First GPU is 0, second is 1, and so on.", OFFSET(gpu), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, VE },
{ NULL }
};
static const AVClass nvenc_class = {
.class_name = "nvenc",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};
static const AVCodecDefault nvenc_defaults[] = {
{ "b", "0" },
{ "qmin", "-1" },
{ "qmax", "-1" },
{ "qdiff", "-1" },
{ "qblur", "-1" },
{ "qcomp", "-1" },
{ NULL },
};
AVCodec ff_nvenc_encoder = {
.name = "nvenc",
.long_name = NULL_IF_CONFIG_SMALL("Nvidia NVENC h264 encoder"),
.type = AVMEDIA_TYPE_VIDEO,
.id = AV_CODEC_ID_H264,
.priv_data_size = sizeof(NvencContext),
.init = nvenc_encode_init,
.encode2 = nvenc_encode_frame,
.close = nvenc_encode_close,
.capabilities = CODEC_CAP_DELAY,
.priv_class = &nvenc_class,
.defaults = nvenc_defaults,
.pix_fmts = pix_fmts_nvenc,
};
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