}
}
+static void set_lossless(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
+{
+ rc->rateControlMode = NV_ENC_PARAMS_RC_CONSTQP;
+ rc->constQP.qpInterB = 0;
+ rc->constQP.qpInterP = 0;
+ rc->constQP.qpIntra = 0;
+}
+
static void nvenc_override_rate_control(AVCodecContext *avctx,
NV_ENC_RC_PARAMS *rc)
{
if (ctx->rc > 0) {
nvenc_override_rate_control(avctx, rc);
+ } else if (ctx->flags & NVENC_LOSSLESS) {
+ set_lossless(avctx, rc);
} else if (avctx->global_quality > 0) {
set_constqp(avctx, rc);
} else if (avctx->qmin >= 0 && avctx->qmax >= 0) {
h264->maxNumRefFrames = avctx->refs;
h264->idrPeriod = cc->gopLength;
+ if (ctx->flags & NVENC_LOSSLESS)
+ h264->qpPrimeYZeroTransformBypassFlag = 1;
+
if (ctx->profile)
avctx->profile = ctx->profile;
{ "ll", "low latency", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_DEFAULT }, 0, 0, VE, "preset" },
{ "llhq", "low latency hq", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_HQ }, 0, 0, VE, "preset" },
{ "llhp", "low latency hp", 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOW_LATENCY_HP }, 0, 0, VE, "preset" },
+ { "lossless", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOSSLESS_DEFAULT }, 0, 0, VE, "preset" },
+ { "losslesshp", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = PRESET_LOSSLESS_HP }, 0, 0, VE, "preset" },
{ "profile", "Set the encoding profile", OFFSET(profile), AV_OPT_TYPE_INT, { .i64 = NV_ENC_H264_PROFILE_HIGH }, NV_ENC_H264_PROFILE_BASELINE, NV_ENC_H264_PROFILE_CONSTRAINED_HIGH, VE, "profile" },
{ "baseline", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_BASELINE }, 0, 0, VE, "profile" },
{ "main", "", 0, AV_OPT_TYPE_CONST, { .i64 = NV_ENC_H264_PROFILE_MAIN }, 0, 0, VE, "profile" },