fcH264EncoderNVIDIA::fcH264EncoderNVIDIA(const fcH264EncoderConfig& conf, void *device, fcHWEncoderDeviceType type)
: m_conf(conf)
{
if (!LoadNVENCModule()) { return; }
NVENCSTATUS stat;
{
NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS params;
memset(¶ms, 0, sizeof(params));
params.version = NV_ENC_OPEN_ENCODE_SESSION_EX_PARAMS_VER;
params.apiVersion = NVENCAPI_VERSION;
params.device = device;
switch (type) {
case fcHWEncoderDeviceType::D3D9:
case fcHWEncoderDeviceType::D3D10:
case fcHWEncoderDeviceType::D3D11:
case fcHWEncoderDeviceType::D3D12:
params.deviceType = NV_ENC_DEVICE_TYPE_DIRECTX;
break;
case fcHWEncoderDeviceType::CUDA:
params.deviceType = NV_ENC_DEVICE_TYPE_CUDA;
break;
}
stat = nvenc.nvEncOpenEncodeSessionEx(¶ms, &m_encoder);
if (!m_encoder) {
return;
}
}
std::vector<GUID> encode_guilds;
std::vector<GUID> profile_guilds;
std::vector<GUID> preset_guilds;
{
uint32_t num_encode_guilds = 0;
uint32_t num_profile_guilds = 0;
uint32_t num_preset_guilds = 0;
nvenc.nvEncGetEncodeGUIDCount(m_encoder, &num_encode_guilds);
encode_guilds.resize(num_encode_guilds);
nvenc.nvEncGetEncodeGUIDs(m_encoder, encode_guilds.data(), num_encode_guilds, &num_encode_guilds);
nvenc.nvEncGetEncodeProfileGUIDCount(m_encoder, NV_ENC_CODEC_H264_GUID, &num_profile_guilds);
profile_guilds.resize(num_profile_guilds);
nvenc.nvEncGetEncodeProfileGUIDs(m_encoder, NV_ENC_CODEC_H264_GUID, profile_guilds.data(), num_profile_guilds, &num_profile_guilds);
nvenc.nvEncGetEncodePresetCount(m_encoder, NV_ENC_CODEC_H264_GUID, &num_preset_guilds);
preset_guilds.resize(num_preset_guilds);
nvenc.nvEncGetEncodePresetGUIDs(m_encoder, NV_ENC_CODEC_H264_GUID, preset_guilds.data(), num_preset_guilds, &num_preset_guilds);
}
{
NV_ENC_INITIALIZE_PARAMS params = { 0 };
params.version = NV_ENC_INITIALIZE_PARAMS_VER;
params.encodeGUID = NV_ENC_CODEC_H264_GUID;
params.presetGUID = NV_ENC_PRESET_DEFAULT_GUID;
params.encodeWidth = conf.width;
params.encodeHeight = conf.height;
params.darWidth = conf.width;
params.darHeight = conf.height;
params.frameRateNum = m_conf.target_framerate;
params.frameRateDen = 1;
params.enablePTD = 1;
NV_ENC_PRESET_CONFIG preset_config = { 0 };
preset_config.version = NV_ENC_PRESET_CONFIG_VER;
preset_config.presetCfg.version = NV_ENC_CONFIG_VER;
stat = nvenc.nvEncGetEncodePresetConfig(m_encoder, params.encodeGUID, params.presetGUID, &preset_config);
NV_ENC_CONFIG encode_config = { 0 };
encode_config.version = NV_ENC_CONFIG_VER;
memcpy(&encode_config, &preset_config.presetCfg, sizeof(NV_ENC_CONFIG));
encode_config.profileGUID = NV_ENC_H264_PROFILE_HIGH_GUID;
params.encodeConfig = &encode_config;
stat = nvenc.nvEncInitializeEncoder(m_encoder, ¶ms);
}
{
memset(&m_input, 0, sizeof(m_input));
m_input.version = NV_ENC_CREATE_INPUT_BUFFER_VER;
m_input.width = m_conf.width;
m_input.height = m_conf.height;
m_input.bufferFmt = NV_ENC_BUFFER_FORMAT_NV12;
stat = nvenc.nvEncCreateInputBuffer(m_encoder, &m_input);
}
{
memset(&m_output, 0, sizeof(m_output));
m_output.version = NV_ENC_CREATE_BITSTREAM_BUFFER_VER;
m_output.size = roundup<16>(conf.width) * roundup<16>(conf.height) * 2;
stat = nvenc.nvEncCreateBitstreamBuffer(m_encoder, &m_output);
}
}
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 };
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) {
av_log(avctx, AV_LOG_ERROR,
"Cannot get the preset configuration\n");
return AVERROR_UNKNOWN;
}
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) {
ctx->last_dts = -2;
/* 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;
nvenc_setup_rate_control(avctx);
if (avctx->flags & 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) {
av_log(avctx, AV_LOG_ERROR, "Cannot initialize the decoder");
return AVERROR_UNKNOWN;
}
return 0;
}
