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obs-studio/plugins/obs-ffmpeg/jim-nvenc.c

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#include "jim-nvenc.h"
#include <util/circlebuf.h>
#include <util/darray.h>
#include <util/dstr.h>
#include <obs-avc.h>
#include <libavutil/rational.h>
#define INITGUID
#include <dxgi.h>
#include <d3d11.h>
#include <d3d11_1.h>
#ifdef ENABLE_HEVC
#include <obs-hevc.h>
#endif
/* TODO: Use new preset scheme */
#pragma warning(disable : 4996)
/* ========================================================================= */
#define EXTRA_BUFFERS 5
#define do_log(level, format, ...) \
blog(level, "[jim-nvenc: '%s'] " format, \
obs_encoder_get_name(enc->encoder), ##__VA_ARGS__)
#define error(format, ...) do_log(LOG_ERROR, format, ##__VA_ARGS__)
#define warn(format, ...) do_log(LOG_WARNING, format, ##__VA_ARGS__)
#define info(format, ...) do_log(LOG_INFO, format, ##__VA_ARGS__)
#define debug(format, ...) do_log(LOG_DEBUG, format, ##__VA_ARGS__)
#define error_hr(msg) error("%s: %s: 0x%08lX", __FUNCTION__, msg, (uint32_t)hr);
struct nv_bitstream;
struct nv_texture;
struct handle_tex {
uint32_t handle;
ID3D11Texture2D *tex;
IDXGIKeyedMutex *km;
};
/* ------------------------------------------------------------------------- */
/* Main Implementation Structure */
struct nvenc_data {
obs_encoder_t *encoder;
#ifdef ENABLE_HEVC
bool hevc;
#endif
void *session;
NV_ENC_INITIALIZE_PARAMS params;
NV_ENC_CONFIG config;
int rc_lookahead;
int buf_count;
int output_delay;
int buffers_queued;
size_t next_bitstream;
size_t cur_bitstream;
bool encode_started;
bool first_packet;
bool can_change_bitrate;
int32_t bframes;
DARRAY(struct nv_bitstream) bitstreams;
DARRAY(struct nv_texture) textures;
DARRAY(struct handle_tex) input_textures;
struct circlebuf dts_list;
DARRAY(uint8_t) packet_data;
int64_t packet_pts;
bool packet_keyframe;
ID3D11Device *device;
ID3D11DeviceContext *context;
uint32_t cx;
uint32_t cy;
uint8_t *header;
size_t header_size;
uint8_t *sei;
size_t sei_size;
};
/* ------------------------------------------------------------------------- */
/* Bitstream Buffer */
struct nv_bitstream {
void *ptr;
HANDLE event;
};
#define NV_FAIL(format, ...) nv_fail(enc->encoder, format, __VA_ARGS__)
#define NV_FAILED(x) nv_failed(enc->encoder, x, __FUNCTION__, #x)
static bool nv_bitstream_init(struct nvenc_data *enc, struct nv_bitstream *bs)
{
NV_ENC_CREATE_BITSTREAM_BUFFER buf = {
NV_ENC_CREATE_BITSTREAM_BUFFER_VER};
NV_ENC_EVENT_PARAMS params = {NV_ENC_EVENT_PARAMS_VER};
HANDLE event = NULL;
if (NV_FAILED(nv.nvEncCreateBitstreamBuffer(enc->session, &buf))) {
return false;
}
event = CreateEvent(NULL, true, true, NULL);
if (!event) {
error("%s: %s", __FUNCTION__, "Failed to create event");
goto fail;
}
params.completionEvent = event;
if (NV_FAILED(nv.nvEncRegisterAsyncEvent(enc->session, &params))) {
goto fail;
}
bs->ptr = buf.bitstreamBuffer;
bs->event = event;
return true;
fail:
if (event) {
CloseHandle(event);
}
if (buf.bitstreamBuffer) {
nv.nvEncDestroyBitstreamBuffer(enc->session,
buf.bitstreamBuffer);
}
return false;
}
static void nv_bitstream_free(struct nvenc_data *enc, struct nv_bitstream *bs)
{
if (bs->ptr) {
nv.nvEncDestroyBitstreamBuffer(enc->session, bs->ptr);
NV_ENC_EVENT_PARAMS params = {NV_ENC_EVENT_PARAMS_VER};
params.completionEvent = bs->event;
nv.nvEncUnregisterAsyncEvent(enc->session, &params);
CloseHandle(bs->event);
}
}
/* ------------------------------------------------------------------------- */
/* Texture Resource */
struct nv_texture {
void *res;
ID3D11Texture2D *tex;
void *mapped_res;
};
static bool nv_texture_init(struct nvenc_data *enc, struct nv_texture *nvtex)
{
const bool p010 = obs_p010_tex_active();
D3D11_TEXTURE2D_DESC desc = {0};
desc.Width = enc->cx;
desc.Height = enc->cy;
desc.MipLevels = 1;
desc.ArraySize = 1;
desc.Format = p010 ? DXGI_FORMAT_P010 : DXGI_FORMAT_NV12;
desc.SampleDesc.Count = 1;
desc.BindFlags = D3D11_BIND_RENDER_TARGET;
ID3D11Device *const device = enc->device;
ID3D11Texture2D *tex;
HRESULT hr = device->lpVtbl->CreateTexture2D(device, &desc, NULL, &tex);
if (FAILED(hr)) {
error_hr("Failed to create texture");
return false;
}
tex->lpVtbl->SetEvictionPriority(tex, DXGI_RESOURCE_PRIORITY_MAXIMUM);
NV_ENC_REGISTER_RESOURCE res = {NV_ENC_REGISTER_RESOURCE_VER};
res.resourceType = NV_ENC_INPUT_RESOURCE_TYPE_DIRECTX;
res.resourceToRegister = tex;
res.width = enc->cx;
res.height = enc->cy;
res.bufferFormat = p010 ? NV_ENC_BUFFER_FORMAT_YUV420_10BIT
: NV_ENC_BUFFER_FORMAT_NV12;
if (NV_FAILED(nv.nvEncRegisterResource(enc->session, &res))) {
tex->lpVtbl->Release(tex);
return false;
}
nvtex->res = res.registeredResource;
nvtex->tex = tex;
nvtex->mapped_res = NULL;
return true;
}
static void nv_texture_free(struct nvenc_data *enc, struct nv_texture *nvtex)
{
if (nvtex->res) {
if (nvtex->mapped_res) {
nv.nvEncUnmapInputResource(enc->session,
nvtex->mapped_res);
}
nv.nvEncUnregisterResource(enc->session, nvtex->res);
nvtex->tex->lpVtbl->Release(nvtex->tex);
}
}
/* ------------------------------------------------------------------------- */
/* Implementation */
static const char *h264_nvenc_get_name(void *type_data)
{
UNUSED_PARAMETER(type_data);
return "NVIDIA NVENC H.264 (new)";
}
#ifdef ENABLE_HEVC
static const char *hevc_nvenc_get_name(void *type_data)
{
UNUSED_PARAMETER(type_data);
return "NVIDIA NVENC HEVC (new)";
}
#endif
static inline int nv_get_cap_internal(struct nvenc_data *enc, NV_ENC_CAPS cap,
GUID encodeGUID)
{
if (!enc->session)
return 0;
NV_ENC_CAPS_PARAM param = {NV_ENC_CAPS_PARAM_VER};
int v;
param.capsToQuery = cap;
nv.nvEncGetEncodeCaps(enc->session, encodeGUID, &param, &v);
return v;
}
static inline int nv_get_cap_h264(struct nvenc_data *enc, NV_ENC_CAPS cap)
{
return nv_get_cap_internal(enc, cap, NV_ENC_CODEC_H264_GUID);
}
#ifdef ENABLE_HEVC
static inline int nv_get_cap_hevc(struct nvenc_data *enc, NV_ENC_CAPS cap)
{
return nv_get_cap_internal(enc, cap, NV_ENC_CODEC_HEVC_GUID);
}
#endif
static bool nvenc_update(void *data, obs_data_t *settings)
{
struct nvenc_data *enc = data;
/* Only support reconfiguration of CBR bitrate */
if (enc->can_change_bitrate) {
int bitrate = (int)obs_data_get_int(settings, "bitrate");
enc->config.rcParams.averageBitRate = bitrate * 1000;
enc->config.rcParams.maxBitRate = bitrate * 1000;
NV_ENC_RECONFIGURE_PARAMS params = {0};
params.version = NV_ENC_RECONFIGURE_PARAMS_VER;
params.reInitEncodeParams = enc->params;
params.resetEncoder = 1;
params.forceIDR = 1;
if (NV_FAILED(nv.nvEncReconfigureEncoder(enc->session,
&params))) {
return false;
}
}
return true;
}
static HANDLE get_lib(struct nvenc_data *enc, const char *lib)
{
HMODULE mod = GetModuleHandleA(lib);
if (mod)
return mod;
mod = LoadLibraryA(lib);
if (!mod)
error("Failed to load %s", lib);
return mod;
}
typedef HRESULT(WINAPI *CREATEDXGIFACTORY1PROC)(REFIID, void **);
static bool init_d3d11(struct nvenc_data *enc, obs_data_t *settings)
{
HMODULE dxgi = get_lib(enc, "DXGI.dll");
HMODULE d3d11 = get_lib(enc, "D3D11.dll");
CREATEDXGIFACTORY1PROC create_dxgi;
PFN_D3D11_CREATE_DEVICE create_device;
IDXGIFactory1 *factory;
IDXGIAdapter *adapter;
ID3D11Device *device;
ID3D11DeviceContext *context;
HRESULT hr;
if (!dxgi || !d3d11) {
return false;
}
create_dxgi = (CREATEDXGIFACTORY1PROC)GetProcAddress(
dxgi, "CreateDXGIFactory1");
create_device = (PFN_D3D11_CREATE_DEVICE)GetProcAddress(
d3d11, "D3D11CreateDevice");
if (!create_dxgi || !create_device) {
error("Failed to load D3D11/DXGI procedures");
return false;
}
hr = create_dxgi(&IID_IDXGIFactory1, &factory);
if (FAILED(hr)) {
error_hr("CreateDXGIFactory1 failed");
return false;
}
hr = factory->lpVtbl->EnumAdapters(factory, 0, &adapter);
factory->lpVtbl->Release(factory);
if (FAILED(hr)) {
error_hr("EnumAdapters failed");
return false;
}
hr = create_device(adapter, D3D_DRIVER_TYPE_UNKNOWN, NULL, 0, NULL, 0,
D3D11_SDK_VERSION, &device, NULL, &context);
adapter->lpVtbl->Release(adapter);
if (FAILED(hr)) {
error_hr("D3D11CreateDevice failed");
return false;
}
enc->device = device;
enc->context = context;
return true;
}
static bool init_session(struct nvenc_data *enc)
{
NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params = {
NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER};
params.device = enc->device;
params.deviceType = NV_ENC_DEVICE_TYPE_DIRECTX;
params.apiVersion = NVENCAPI_VERSION;
if (NV_FAILED(nv.nvEncOpenEncodeSessionEx(&params, &enc->session))) {
return false;
}
return true;
}
static bool init_encoder_h264(struct nvenc_data *enc, obs_data_t *settings,
int bf, bool psycho_aq)
{
const char *rc = obs_data_get_string(settings, "rate_control");
int bitrate = (int)obs_data_get_int(settings, "bitrate");
int max_bitrate = (int)obs_data_get_int(settings, "max_bitrate");
int cqp = (int)obs_data_get_int(settings, "cqp");
int keyint_sec = (int)obs_data_get_int(settings, "keyint_sec");
const char *preset = obs_data_get_string(settings, "preset");
const char *profile = obs_data_get_string(settings, "profile");
bool lookahead = obs_data_get_bool(settings, "lookahead");
bool vbr = astrcmpi(rc, "VBR") == 0;
NVENCSTATUS err;
video_t *video = obs_encoder_video(enc->encoder);
const struct video_output_info *voi = video_output_get_info(video);
enc->cx = voi->width;
enc->cy = voi->height;
/* -------------------------- */
/* get preset */
GUID nv_preset = NV_ENC_PRESET_DEFAULT_GUID;
bool twopass = false;
bool hp = false;
bool ll = false;
if (astrcmpi(preset, "hq") == 0) {
nv_preset = NV_ENC_PRESET_HQ_GUID;
} else if (astrcmpi(preset, "mq") == 0) {
nv_preset = NV_ENC_PRESET_HQ_GUID;
twopass = true;
} else if (astrcmpi(preset, "hp") == 0) {
nv_preset = NV_ENC_PRESET_HP_GUID;
hp = true;
} else if (astrcmpi(preset, "ll") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID;
ll = true;
} else if (astrcmpi(preset, "llhq") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_HQ_GUID;
ll = true;
} else if (astrcmpi(preset, "llhp") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_HP_GUID;
hp = true;
ll = true;
}
const bool rc_lossless = astrcmpi(rc, "lossless") == 0;
bool lossless = rc_lossless;
if (rc_lossless) {
lossless = nv_get_cap_h264(enc,
NV_ENC_CAPS_SUPPORT_LOSSLESS_ENCODE);
if (lossless) {
nv_preset = hp ? NV_ENC_PRESET_LOSSLESS_HP_GUID
: NV_ENC_PRESET_LOSSLESS_DEFAULT_GUID;
} else {
warn("lossless encode is not supported, ignoring");
}
}
/* -------------------------- */
/* get preset default config */
NV_ENC_PRESET_CONFIG preset_config = {NV_ENC_PRESET_CONFIG_VER,
{NV_ENC_CONFIG_VER}};
err = nv.nvEncGetEncodePresetConfig(enc->session,
NV_ENC_CODEC_H264_GUID, nv_preset,
&preset_config);
if (nv_failed(enc->encoder, err, __FUNCTION__,
"nvEncGetEncodePresetConfig")) {
return false;
}
/* -------------------------- */
/* main configuration */
enc->config = preset_config.presetCfg;
uint32_t gop_size =
(keyint_sec) ? keyint_sec * voi->fps_num / voi->fps_den : 250;
NV_ENC_INITIALIZE_PARAMS *params = &enc->params;
NV_ENC_CONFIG *config = &enc->config;
NV_ENC_CONFIG_H264 *h264_config = &config->encodeCodecConfig.h264Config;
NV_ENC_CONFIG_H264_VUI_PARAMETERS *vui_params =
&h264_config->h264VUIParameters;
int darWidth, darHeight;
av_reduce(&darWidth, &darHeight, voi->width, voi->height, 1024 * 1024);
memset(params, 0, sizeof(*params));
params->version = NV_ENC_INITIALIZE_PARAMS_VER;
params->encodeGUID = NV_ENC_CODEC_H264_GUID;
params->presetGUID = nv_preset;
params->encodeWidth = voi->width;
params->encodeHeight = voi->height;
params->darWidth = darWidth;
params->darHeight = darHeight;
params->frameRateNum = voi->fps_num;
params->frameRateDen = voi->fps_den;
params->enableEncodeAsync = 1;
params->enablePTD = 1;
params->encodeConfig = &enc->config;
config->gopLength = gop_size;
config->frameIntervalP = 1 + bf;
h264_config->idrPeriod = gop_size;
bool repeat_headers = obs_data_get_bool(settings, "repeat_headers");
if (repeat_headers) {
h264_config->repeatSPSPPS = 1;
h264_config->disableSPSPPS = 0;
h264_config->outputAUD = 1;
}
h264_config->sliceMode = 3;
h264_config->sliceModeData = 1;
h264_config->useBFramesAsRef = NV_ENC_BFRAME_REF_MODE_DISABLED;
vui_params->videoSignalTypePresentFlag = 1;
vui_params->videoFullRangeFlag = (voi->range == VIDEO_RANGE_FULL);
vui_params->colourDescriptionPresentFlag = 1;
switch (voi->colorspace) {
case VIDEO_CS_601:
vui_params->colourPrimaries = 6;
vui_params->transferCharacteristics = 6;
vui_params->colourMatrix = 6;
break;
case VIDEO_CS_DEFAULT:
case VIDEO_CS_709:
vui_params->colourPrimaries = 1;
vui_params->transferCharacteristics = 1;
vui_params->colourMatrix = 1;
break;
case VIDEO_CS_SRGB:
vui_params->colourPrimaries = 1;
vui_params->transferCharacteristics = 13;
vui_params->colourMatrix = 1;
break;
}
enc->bframes = bf;
/* lookahead */
const bool use_profile_lookahead = config->rcParams.enableLookahead;
lookahead = nv_get_cap_h264(enc, NV_ENC_CAPS_SUPPORT_LOOKAHEAD) &&
(lookahead || use_profile_lookahead);
if (lookahead) {
enc->rc_lookahead = use_profile_lookahead
? config->rcParams.lookaheadDepth
: 8;
}
int buf_count = max(4, config->frameIntervalP * 2 * 2);
if (lookahead) {
buf_count = max(buf_count, config->frameIntervalP +
enc->rc_lookahead +
EXTRA_BUFFERS);
}
buf_count = min(64, buf_count);
enc->buf_count = buf_count;
const int output_delay = buf_count - 1;
enc->output_delay = output_delay;
if (lookahead) {
const int lkd_bound = output_delay - config->frameIntervalP - 4;
if (lkd_bound >= 0) {
config->rcParams.enableLookahead = 1;
config->rcParams.lookaheadDepth =
max(enc->rc_lookahead, lkd_bound);
config->rcParams.disableIadapt = 0;
config->rcParams.disableBadapt = 0;
} else {
lookahead = false;
}
}
/* psycho aq */
if (nv_get_cap_h264(enc, NV_ENC_CAPS_SUPPORT_TEMPORAL_AQ)) {
config->rcParams.enableAQ = psycho_aq;
config->rcParams.aqStrength = 8;
config->rcParams.enableTemporalAQ = psycho_aq;
} else if (psycho_aq) {
warn("Ignoring Psycho Visual Tuning request since GPU is not capable");
}
/* -------------------------- */
/* rate control */
enc->can_change_bitrate =
nv_get_cap_h264(enc, NV_ENC_CAPS_SUPPORT_DYN_BITRATE_CHANGE) &&
!lookahead;
config->rcParams.rateControlMode = twopass ? NV_ENC_PARAMS_RC_VBR_HQ
: NV_ENC_PARAMS_RC_VBR;
if (astrcmpi(rc, "cqp") == 0 || rc_lossless) {
if (lossless) {
h264_config->qpPrimeYZeroTransformBypassFlag = 1;
cqp = 0;
}
config->rcParams.rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
config->rcParams.constQP.qpInterP = cqp;
config->rcParams.constQP.qpInterB = cqp;
config->rcParams.constQP.qpIntra = cqp;
enc->can_change_bitrate = false;
bitrate = 0;
max_bitrate = 0;
} else if (astrcmpi(rc, "vbr") != 0) { /* CBR by default */
h264_config->outputBufferingPeriodSEI = 1;
config->rcParams.rateControlMode =
twopass ? NV_ENC_PARAMS_RC_2_PASS_QUALITY
: NV_ENC_PARAMS_RC_CBR;
}
h264_config->outputPictureTimingSEI = 1;
config->rcParams.averageBitRate = bitrate * 1000;
config->rcParams.maxBitRate = vbr ? max_bitrate * 1000 : bitrate * 1000;
config->rcParams.vbvBufferSize = bitrate * 1000;
/* -------------------------- */
/* profile */
if (astrcmpi(profile, "main") == 0) {
config->profileGUID = NV_ENC_H264_PROFILE_MAIN_GUID;
} else if (astrcmpi(profile, "baseline") == 0) {
config->profileGUID = NV_ENC_H264_PROFILE_BASELINE_GUID;
} else if (!lossless) {
config->profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
}
/* -------------------------- */
/* initialize */
if (NV_FAILED(nv.nvEncInitializeEncoder(enc->session, params))) {
return false;
}
info("settings:\n"
"\trate_control: %s\n"
"\tbitrate: %d\n"
"\tcqp: %d\n"
"\tkeyint: %d\n"
"\tpreset: %s\n"
"\tprofile: %s\n"
"\twidth: %d\n"
"\theight: %d\n"
"\t2-pass: %s\n"
"\tb-frames: %d\n"
"\tlookahead: %s\n"
"\tpsycho_aq: %s\n",
rc, bitrate, cqp, gop_size, preset, profile, enc->cx, enc->cy,
twopass ? "true" : "false", bf, lookahead ? "true" : "false",
psycho_aq ? "true" : "false");
return true;
}
#ifdef ENABLE_HEVC
static bool init_encoder_hevc(struct nvenc_data *enc, obs_data_t *settings,
int bf, bool psycho_aq)
{
const char *rc = obs_data_get_string(settings, "rate_control");
int bitrate = (int)obs_data_get_int(settings, "bitrate");
int max_bitrate = (int)obs_data_get_int(settings, "max_bitrate");
int cqp = (int)obs_data_get_int(settings, "cqp");
int keyint_sec = (int)obs_data_get_int(settings, "keyint_sec");
const char *preset = obs_data_get_string(settings, "preset");
const char *profile = obs_data_get_string(settings, "profile");
bool lookahead = obs_data_get_bool(settings, "lookahead");
bool vbr = astrcmpi(rc, "VBR") == 0;
NVENCSTATUS err;
video_t *video = obs_encoder_video(enc->encoder);
const struct video_output_info *voi = video_output_get_info(video);
enc->cx = voi->width;
enc->cy = voi->height;
/* -------------------------- */
/* get preset */
GUID nv_preset = NV_ENC_PRESET_DEFAULT_GUID;
bool twopass = false;
bool hp = false;
bool ll = false;
if (astrcmpi(preset, "hq") == 0) {
nv_preset = NV_ENC_PRESET_HQ_GUID;
} else if (astrcmpi(preset, "mq") == 0) {
nv_preset = NV_ENC_PRESET_HQ_GUID;
twopass = true;
} else if (astrcmpi(preset, "hp") == 0) {
nv_preset = NV_ENC_PRESET_HP_GUID;
hp = true;
} else if (astrcmpi(preset, "ll") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_DEFAULT_GUID;
ll = true;
} else if (astrcmpi(preset, "llhq") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_HQ_GUID;
ll = true;
} else if (astrcmpi(preset, "llhp") == 0) {
nv_preset = NV_ENC_PRESET_LOW_LATENCY_HP_GUID;
hp = true;
ll = true;
}
const bool rc_lossless = astrcmpi(rc, "lossless") == 0;
bool lossless = rc_lossless;
if (rc_lossless) {
lossless = nv_get_cap_hevc(enc,
NV_ENC_CAPS_SUPPORT_LOSSLESS_ENCODE);
if (lossless) {
nv_preset = hp ? NV_ENC_PRESET_LOSSLESS_HP_GUID
: NV_ENC_PRESET_LOSSLESS_DEFAULT_GUID;
} else {
warn("lossless encode is not supported, ignoring");
}
}
/* -------------------------- */
/* get preset default config */
NV_ENC_PRESET_CONFIG preset_config = {NV_ENC_PRESET_CONFIG_VER,
{NV_ENC_CONFIG_VER}};
err = nv.nvEncGetEncodePresetConfig(enc->session,
NV_ENC_CODEC_HEVC_GUID, nv_preset,
&preset_config);
if (nv_failed(enc->encoder, err, __FUNCTION__,
"nvEncGetEncodePresetConfig")) {
return false;
}
/* -------------------------- */
/* main configuration */
enc->config = preset_config.presetCfg;
uint32_t gop_size =
(keyint_sec) ? keyint_sec * voi->fps_num / voi->fps_den : 250;
NV_ENC_INITIALIZE_PARAMS *params = &enc->params;
NV_ENC_CONFIG *config = &enc->config;
NV_ENC_CONFIG_HEVC *hevc_config = &config->encodeCodecConfig.hevcConfig;
NV_ENC_CONFIG_H264_VUI_PARAMETERS *vui_params =
&hevc_config->hevcVUIParameters;
int darWidth, darHeight;
av_reduce(&darWidth, &darHeight, voi->width, voi->height, 1024 * 1024);
memset(params, 0, sizeof(*params));
params->version = NV_ENC_INITIALIZE_PARAMS_VER;
params->encodeGUID = NV_ENC_CODEC_HEVC_GUID;
params->presetGUID = nv_preset;
params->encodeWidth = voi->width;
params->encodeHeight = voi->height;
params->darWidth = darWidth;
params->darHeight = darHeight;
params->frameRateNum = voi->fps_num;
params->frameRateDen = voi->fps_den;
params->enableEncodeAsync = 1;
params->enablePTD = 1;
params->encodeConfig = &enc->config;
config->gopLength = gop_size;
config->frameIntervalP = 1 + bf;
hevc_config->idrPeriod = gop_size;
bool repeat_headers = obs_data_get_bool(settings, "repeat_headers");
if (repeat_headers) {
hevc_config->repeatSPSPPS = 1;
hevc_config->disableSPSPPS = 0;
hevc_config->outputAUD = 1;
}
hevc_config->sliceMode = 3;
hevc_config->sliceModeData = 1;
hevc_config->useBFramesAsRef = NV_ENC_BFRAME_REF_MODE_DISABLED;
vui_params->videoSignalTypePresentFlag = 1;
vui_params->videoFullRangeFlag = (voi->range == VIDEO_RANGE_FULL);
vui_params->colourDescriptionPresentFlag = 1;
hevc_config->pixelBitDepthMinus8 = obs_p010_tex_active() ? 2 : 0;
switch (voi->colorspace) {
case VIDEO_CS_601:
vui_params->colourPrimaries = 6;
vui_params->transferCharacteristics = 6;
vui_params->colourMatrix = 6;
break;
case VIDEO_CS_DEFAULT:
case VIDEO_CS_709:
vui_params->colourPrimaries = 1;
vui_params->transferCharacteristics = 1;
vui_params->colourMatrix = 1;
break;
case VIDEO_CS_SRGB:
vui_params->colourPrimaries = 1;
vui_params->transferCharacteristics = 13;
vui_params->colourMatrix = 1;
break;
case VIDEO_CS_2100_PQ:
vui_params->colourPrimaries = 9;
vui_params->transferCharacteristics = 16;
vui_params->colourMatrix = 9;
break;
case VIDEO_CS_2100_HLG:
vui_params->colourPrimaries = 9;
vui_params->transferCharacteristics = 18;
vui_params->colourMatrix = 9;
}
enc->bframes = bf;
/* lookahead */
const bool use_profile_lookahead = config->rcParams.enableLookahead;
lookahead = nv_get_cap_hevc(enc, NV_ENC_CAPS_SUPPORT_LOOKAHEAD) &&
(lookahead || use_profile_lookahead);
if (lookahead) {
enc->rc_lookahead = use_profile_lookahead
? config->rcParams.lookaheadDepth
: 8;
}
int buf_count = max(4, config->frameIntervalP * 2 * 2);
if (lookahead) {
buf_count = max(buf_count, config->frameIntervalP +
enc->rc_lookahead +
EXTRA_BUFFERS);
}
buf_count = min(64, buf_count);
enc->buf_count = buf_count;
const int output_delay = buf_count - 1;
enc->output_delay = output_delay;
if (lookahead) {
const int lkd_bound = output_delay - config->frameIntervalP - 4;
if (lkd_bound >= 0) {
config->rcParams.enableLookahead = 1;
config->rcParams.lookaheadDepth =
max(enc->rc_lookahead, lkd_bound);
config->rcParams.disableIadapt = 0;
config->rcParams.disableBadapt = 0;
} else {
lookahead = false;
}
}
/* psycho aq */
if (nv_get_cap_hevc(enc, NV_ENC_CAPS_SUPPORT_TEMPORAL_AQ)) {
config->rcParams.enableAQ = psycho_aq;
config->rcParams.aqStrength = 8;
config->rcParams.enableTemporalAQ = psycho_aq;
} else if (psycho_aq) {
warn("Ignoring Psycho Visual Tuning request since GPU is not capable");
}
/* -------------------------- */
/* rate control */
enc->can_change_bitrate =
nv_get_cap_hevc(enc, NV_ENC_CAPS_SUPPORT_DYN_BITRATE_CHANGE) &&
!lookahead;
config->rcParams.rateControlMode = twopass ? NV_ENC_PARAMS_RC_VBR_HQ
: NV_ENC_PARAMS_RC_VBR;
if (astrcmpi(rc, "cqp") == 0 || rc_lossless) {
if (lossless)
cqp = 0;
config->rcParams.rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
config->rcParams.constQP.qpInterP = cqp;
config->rcParams.constQP.qpInterB = cqp;
config->rcParams.constQP.qpIntra = cqp;
enc->can_change_bitrate = false;
bitrate = 0;
max_bitrate = 0;
} else if (astrcmpi(rc, "vbr") != 0) { /* CBR by default */
hevc_config->outputBufferingPeriodSEI = 1;
config->rcParams.rateControlMode =
twopass ? NV_ENC_PARAMS_RC_2_PASS_QUALITY
: NV_ENC_PARAMS_RC_CBR;
}
hevc_config->outputPictureTimingSEI = 1;
config->rcParams.averageBitRate = bitrate * 1000;
config->rcParams.maxBitRate = vbr ? max_bitrate * 1000 : bitrate * 1000;
config->rcParams.vbvBufferSize = bitrate * 1000;
/* -------------------------- */
/* profile */
if (astrcmpi(profile, "main10") == 0) {
config->profileGUID = NV_ENC_HEVC_PROFILE_MAIN10_GUID;
} else if (obs_p010_tex_active()) {
blog(LOG_WARNING, "[jim-nvenc] Forcing main10 for P010");
config->profileGUID = NV_ENC_HEVC_PROFILE_MAIN10_GUID;
} else {
config->profileGUID = NV_ENC_HEVC_PROFILE_MAIN_GUID;
}
/* -------------------------- */
/* initialize */
if (NV_FAILED(nv.nvEncInitializeEncoder(enc->session, params))) {
return false;
}
info("settings:\n"
"\trate_control: %s\n"
"\tbitrate: %d\n"
"\tcqp: %d\n"
"\tkeyint: %d\n"
"\tpreset: %s\n"
"\tprofile: %s\n"
"\twidth: %d\n"
"\theight: %d\n"
"\t2-pass: %s\n"
"\tb-frames: %d\n"
"\tlookahead: %s\n"
"\tpsycho_aq: %s\n",
rc, bitrate, cqp, gop_size, preset, profile, enc->cx, enc->cy,
twopass ? "true" : "false", bf, lookahead ? "true" : "false",
psycho_aq ? "true" : "false");
return true;
}
#endif
static bool init_bitstreams(struct nvenc_data *enc)
{
da_reserve(enc->bitstreams, enc->buf_count);
for (int i = 0; i < enc->buf_count; i++) {
struct nv_bitstream bitstream;
if (!nv_bitstream_init(enc, &bitstream)) {
return false;
}
da_push_back(enc->bitstreams, &bitstream);
}
return true;
}
static bool init_textures(struct nvenc_data *enc)
{
da_reserve(enc->textures, enc->buf_count);
for (int i = 0; i < enc->buf_count; i++) {
struct nv_texture texture;
if (!nv_texture_init(enc, &texture)) {
return false;
}
da_push_back(enc->textures, &texture);
}
return true;
}
static void nvenc_destroy(void *data);
static bool init_specific_encoder(struct nvenc_data *enc, bool hevc,
obs_data_t *settings, obs_encoder_t *encoder,
int bf, bool psycho_aq)
{
bool init = false;
#ifdef ENABLE_HEVC
if (hevc)
return init_encoder_hevc(enc, settings, bf, psycho_aq);
#endif
return init_encoder_h264(enc, settings, bf, psycho_aq);
}
static bool init_encoder(struct nvenc_data *enc, bool hevc,
obs_data_t *settings, obs_encoder_t *encoder)
{
const int bf = (int)obs_data_get_int(settings, "bf");
const bool psycho_aq = obs_data_get_bool(settings, "psycho_aq");
#ifdef ENABLE_HEVC
const bool support_10bit =
hevc ? nv_get_cap_hevc(enc, NV_ENC_CAPS_SUPPORT_10BIT_ENCODE)
: nv_get_cap_h264(enc, NV_ENC_CAPS_SUPPORT_10BIT_ENCODE);
const int bf_max =
hevc ? nv_get_cap_hevc(enc, NV_ENC_CAPS_NUM_MAX_BFRAMES)
: nv_get_cap_h264(enc, NV_ENC_CAPS_NUM_MAX_BFRAMES);
#else
const bool support_10bit =
nv_get_cap_h264(enc, NV_ENC_CAPS_SUPPORT_10BIT_ENCODE);
const int bf_max = nv_get_cap_h264(enc, NV_ENC_CAPS_NUM_MAX_BFRAMES);
#endif
if (obs_p010_tex_active() && !support_10bit) {
NV_FAIL(obs_module_text("NVENC.10bitUnsupported"));
return false;
}
if (bf > bf_max) {
NV_FAIL(obs_module_text("NVENC.TooManyBFrames"), bf, bf_max);
return false;
}
if (!init_specific_encoder(enc, hevc, settings, encoder, bf,
psycho_aq)) {
if (!psycho_aq)
return false;
blog(LOG_WARNING, "[jim-nvenc] init_specific_encoder failed, "
"trying again without Psycho Visual Tuning");
if (!init_specific_encoder(enc, hevc, settings, encoder, bf,
psycho_aq)) {
return false;
}
}
return true;
}
static void *nvenc_create_internal(bool hevc, obs_data_t *settings,
obs_encoder_t *encoder)
{
NV_ENCODE_API_FUNCTION_LIST init = {NV_ENCODE_API_FUNCTION_LIST_VER};
struct nvenc_data *enc = bzalloc(sizeof(*enc));
enc->encoder = encoder;
enc->first_packet = true;
if (!init_nvenc(encoder)) {
goto fail;
}
if (NV_FAILED(nv_create_instance(&init))) {
goto fail;
}
if (!init_d3d11(enc, settings)) {
goto fail;
}
if (!init_session(enc)) {
goto fail;
}
if (!init_encoder(enc, hevc, settings, encoder)) {
goto fail;
}
if (!init_bitstreams(enc)) {
goto fail;
}
if (!init_textures(enc)) {
goto fail;
}
#ifdef ENABLE_HEVC
enc->hevc = hevc;
#endif
return enc;
fail:
nvenc_destroy(enc);
return NULL;
}
static void *nvenc_create_h264_hevc(bool hevc, obs_data_t *settings,
obs_encoder_t *encoder)
{
/* this encoder requires shared textures, this cannot be used on a
* gpu other than the one OBS is currently running on. */
const int gpu = (int)obs_data_get_int(settings, "gpu");
if (gpu != 0) {
blog(LOG_INFO,
"[jim-nvenc] different GPU selected by user, falling back to ffmpeg");
goto reroute;
}
if (obs_encoder_scaling_enabled(encoder)) {
blog(LOG_INFO,
"[jim-nvenc] scaling enabled, falling back to ffmpeg");
goto reroute;
}
if (!obs_p010_tex_active() && !obs_nv12_tex_active()) {
blog(LOG_INFO,
"[jim-nvenc] nv12/p010 not active, falling back to ffmpeg");
goto reroute;
}
struct nvenc_data *enc = nvenc_create_internal(hevc, settings, encoder);
if (enc) {
return enc;
}
reroute:
const char *fallback_name = "ffmpeg_nvenc";
#ifdef ENABLE_HEVC
if (hevc)
fallback_name = "ffmpeg_hevc_nvenc";
#endif
return obs_encoder_create_rerouted(encoder, fallback_name);
}
static void *h264_nvenc_create(obs_data_t *settings, obs_encoder_t *encoder)
{
return nvenc_create_h264_hevc(false, settings, encoder);
}
#ifdef ENABLE_HEVC
static void *hevc_nvenc_create(obs_data_t *settings, obs_encoder_t *encoder)
{
return nvenc_create_h264_hevc(true, settings, encoder);
}
#endif
static bool get_encoded_packet(struct nvenc_data *enc, bool finalize);
static void nvenc_destroy(void *data)
{
struct nvenc_data *enc = data;
if (enc->encode_started) {
size_t next_bitstream = enc->next_bitstream;
HANDLE next_event = enc->bitstreams.array[next_bitstream].event;
NV_ENC_PIC_PARAMS params = {NV_ENC_PIC_PARAMS_VER};
params.encodePicFlags = NV_ENC_PIC_FLAG_EOS;
params.completionEvent = next_event;
nv.nvEncEncodePicture(enc->session, &params);
get_encoded_packet(enc, true);
}
for (size_t i = 0; i < enc->textures.num; i++) {
nv_texture_free(enc, &enc->textures.array[i]);
}
for (size_t i = 0; i < enc->bitstreams.num; i++) {
nv_bitstream_free(enc, &enc->bitstreams.array[i]);
}
if (enc->session) {
nv.nvEncDestroyEncoder(enc->session);
}
for (size_t i = 0; i < enc->input_textures.num; i++) {
ID3D11Texture2D *tex = enc->input_textures.array[i].tex;
IDXGIKeyedMutex *km = enc->input_textures.array[i].km;
tex->lpVtbl->Release(tex);
km->lpVtbl->Release(km);
}
if (enc->context) {
enc->context->lpVtbl->Release(enc->context);
}
if (enc->device) {
enc->device->lpVtbl->Release(enc->device);
}
bfree(enc->header);
bfree(enc->sei);
circlebuf_free(&enc->dts_list);
da_free(enc->textures);
da_free(enc->bitstreams);
da_free(enc->input_textures);
da_free(enc->packet_data);
bfree(enc);
}
static ID3D11Texture2D *get_tex_from_handle(struct nvenc_data *enc,
uint32_t handle,
IDXGIKeyedMutex **km_out)
{
ID3D11Device *device = enc->device;
IDXGIKeyedMutex *km;
ID3D11Texture2D *input_tex;
HRESULT hr;
for (size_t i = 0; i < enc->input_textures.num; i++) {
struct handle_tex *ht = &enc->input_textures.array[i];
if (ht->handle == handle) {
*km_out = ht->km;
return ht->tex;
}
}
hr = device->lpVtbl->OpenSharedResource(device,
(HANDLE)(uintptr_t)handle,
&IID_ID3D11Texture2D,
&input_tex);
if (FAILED(hr)) {
error_hr("OpenSharedResource failed");
return NULL;
}
hr = input_tex->lpVtbl->QueryInterface(input_tex, &IID_IDXGIKeyedMutex,
&km);
if (FAILED(hr)) {
error_hr("QueryInterface(IDXGIKeyedMutex) failed");
input_tex->lpVtbl->Release(input_tex);
return NULL;
}
input_tex->lpVtbl->SetEvictionPriority(input_tex,
DXGI_RESOURCE_PRIORITY_MAXIMUM);
*km_out = km;
struct handle_tex new_ht = {handle, input_tex, km};
da_push_back(enc->input_textures, &new_ht);
return input_tex;
}
static bool get_encoded_packet(struct nvenc_data *enc, bool finalize)
{
void *s = enc->session;
da_resize(enc->packet_data, 0);
if (!enc->buffers_queued)
return true;
if (!finalize && enc->buffers_queued < enc->output_delay)
return true;
size_t count = finalize ? enc->buffers_queued : 1;
for (size_t i = 0; i < count; i++) {
size_t cur_bs_idx = enc->cur_bitstream;
struct nv_bitstream *bs = &enc->bitstreams.array[cur_bs_idx];
struct nv_texture *nvtex = &enc->textures.array[cur_bs_idx];
/* ---------------- */
NV_ENC_LOCK_BITSTREAM lock = {NV_ENC_LOCK_BITSTREAM_VER};
lock.outputBitstream = bs->ptr;
lock.doNotWait = false;
if (NV_FAILED(nv.nvEncLockBitstream(s, &lock))) {
return false;
}
if (enc->first_packet) {
uint8_t *new_packet;
size_t size;
enc->first_packet = false;
#ifdef ENABLE_HEVC
if (enc->hevc) {
obs_extract_hevc_headers(
lock.bitstreamBufferPtr,
lock.bitstreamSizeInBytes, &new_packet,
&size, &enc->header, &enc->header_size,
&enc->sei, &enc->sei_size);
} else
#endif
{
obs_extract_avc_headers(
lock.bitstreamBufferPtr,
lock.bitstreamSizeInBytes, &new_packet,
&size, &enc->header, &enc->header_size,
&enc->sei, &enc->sei_size);
}
da_copy_array(enc->packet_data, new_packet, size);
bfree(new_packet);
} else {
da_copy_array(enc->packet_data, lock.bitstreamBufferPtr,
lock.bitstreamSizeInBytes);
}
enc->packet_pts = (int64_t)lock.outputTimeStamp;
enc->packet_keyframe = lock.pictureType == NV_ENC_PIC_TYPE_IDR;
if (NV_FAILED(nv.nvEncUnlockBitstream(s, bs->ptr))) {
return false;
}
/* ---------------- */
if (nvtex->mapped_res) {
NVENCSTATUS err;
err = nv.nvEncUnmapInputResource(s, nvtex->mapped_res);
if (nv_failed(enc->encoder, err, __FUNCTION__,
"unmap")) {
return false;
}
nvtex->mapped_res = NULL;
}
/* ---------------- */
if (++enc->cur_bitstream == enc->buf_count)
enc->cur_bitstream = 0;
enc->buffers_queued--;
}
return true;
}
static bool nvenc_encode_tex(void *data, uint32_t handle, int64_t pts,
uint64_t lock_key, uint64_t *next_key,
struct encoder_packet *packet,
bool *received_packet)
{
struct nvenc_data *enc = data;
ID3D11Device *device = enc->device;
ID3D11DeviceContext *context = enc->context;
ID3D11Texture2D *input_tex;
ID3D11Texture2D *output_tex;
IDXGIKeyedMutex *km;
struct nv_texture *nvtex;
struct nv_bitstream *bs;
NVENCSTATUS err;
if (handle == GS_INVALID_HANDLE) {
error("Encode failed: bad texture handle");
*next_key = lock_key;
return false;
}
bs = &enc->bitstreams.array[enc->next_bitstream];
nvtex = &enc->textures.array[enc->next_bitstream];
input_tex = get_tex_from_handle(enc, handle, &km);
output_tex = nvtex->tex;
if (!input_tex) {
*next_key = lock_key;
return false;
}
circlebuf_push_back(&enc->dts_list, &pts, sizeof(pts));
/* ------------------------------------ */
/* wait for output bitstream/tex */
WaitForSingleObject(bs->event, INFINITE);
/* ------------------------------------ */
/* copy to output tex */
km->lpVtbl->AcquireSync(km, lock_key, INFINITE);
context->lpVtbl->CopyResource(context, (ID3D11Resource *)output_tex,
(ID3D11Resource *)input_tex);
km->lpVtbl->ReleaseSync(km, *next_key);
/* ------------------------------------ */
/* map output tex so nvenc can use it */
NV_ENC_MAP_INPUT_RESOURCE map = {NV_ENC_MAP_INPUT_RESOURCE_VER};
map.registeredResource = nvtex->res;
if (NV_FAILED(nv.nvEncMapInputResource(enc->session, &map))) {
return false;
}
nvtex->mapped_res = map.mappedResource;
/* ------------------------------------ */
/* do actual encode call */
NV_ENC_PIC_PARAMS params = {0};
params.version = NV_ENC_PIC_PARAMS_VER;
params.pictureStruct = NV_ENC_PIC_STRUCT_FRAME;
params.inputBuffer = nvtex->mapped_res;
params.bufferFmt = obs_p010_tex_active()
? NV_ENC_BUFFER_FORMAT_YUV420_10BIT
: NV_ENC_BUFFER_FORMAT_NV12;
params.inputTimeStamp = (uint64_t)pts;
params.inputWidth = enc->cx;
params.inputHeight = enc->cy;
params.inputPitch = enc->cx;
params.outputBitstream = bs->ptr;
params.completionEvent = bs->event;
err = nv.nvEncEncodePicture(enc->session, &params);
if (err != NV_ENC_SUCCESS && err != NV_ENC_ERR_NEED_MORE_INPUT) {
nv_failed(enc->encoder, err, __FUNCTION__,
"nvEncEncodePicture");
return false;
}
enc->encode_started = true;
enc->buffers_queued++;
if (++enc->next_bitstream == enc->buf_count) {
enc->next_bitstream = 0;
}
/* ------------------------------------ */
/* check for encoded packet and parse */
if (!get_encoded_packet(enc, false)) {
return false;
}
/* ------------------------------------ */
/* output encoded packet */
if (enc->packet_data.num) {
int64_t dts;
circlebuf_pop_front(&enc->dts_list, &dts, sizeof(dts));
/* subtract bframe delay from dts */
dts -= (int64_t)enc->bframes * packet->timebase_num;
*received_packet = true;
packet->data = enc->packet_data.array;
packet->size = enc->packet_data.num;
packet->type = OBS_ENCODER_VIDEO;
packet->pts = enc->packet_pts;
packet->dts = dts;
packet->keyframe = enc->packet_keyframe;
} else {
*received_packet = false;
}
return true;
}
extern void h264_nvenc_defaults(obs_data_t *settings);
extern obs_properties_t *h264_nvenc_properties(void *unused);
#ifdef ENABLE_HEVC
extern void hevc_nvenc_defaults(obs_data_t *settings);
extern obs_properties_t *hevc_nvenc_properties(void *unused);
#endif
static bool nvenc_extra_data(void *data, uint8_t **header, size_t *size)
{
struct nvenc_data *enc = data;
if (!enc->header) {
return false;
}
*header = enc->header;
*size = enc->header_size;
return true;
}
static bool nvenc_sei_data(void *data, uint8_t **sei, size_t *size)
{
struct nvenc_data *enc = data;
if (!enc->sei) {
return false;
}
*sei = enc->sei;
*size = enc->sei_size;
return true;
}
struct obs_encoder_info h264_nvenc_info = {
.id = "jim_nvenc",
.codec = "h264",
.type = OBS_ENCODER_VIDEO,
.caps = OBS_ENCODER_CAP_PASS_TEXTURE | OBS_ENCODER_CAP_DYN_BITRATE,
.get_name = h264_nvenc_get_name,
.create = h264_nvenc_create,
.destroy = nvenc_destroy,
.update = nvenc_update,
.encode_texture = nvenc_encode_tex,
.get_defaults = h264_nvenc_defaults,
.get_properties = h264_nvenc_properties,
.get_extra_data = nvenc_extra_data,
.get_sei_data = nvenc_sei_data,
};
#ifdef ENABLE_HEVC
struct obs_encoder_info hevc_nvenc_info = {
.id = "jim_hevc_nvenc",
.codec = "hevc",
.type = OBS_ENCODER_VIDEO,
.caps = OBS_ENCODER_CAP_PASS_TEXTURE | OBS_ENCODER_CAP_DYN_BITRATE,
.get_name = hevc_nvenc_get_name,
.create = hevc_nvenc_create,
.destroy = nvenc_destroy,
.update = nvenc_update,
.encode_texture = nvenc_encode_tex,
.get_defaults = hevc_nvenc_defaults,
.get_properties = hevc_nvenc_properties,
.get_extra_data = nvenc_extra_data,
.get_sei_data = nvenc_sei_data,
};
#endif
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