avcodec/nvenc: Extended rate-control support as provided by SDK 7

Merged from libav commit by Yogender Gupta:
https://git.libav.org/?p=libav.git;a=commitdiff;h=70de2ea4261f860457a04e3d0c58c5543f403325

1 files changed, 43 insertions, 3 deletions

diff --git a/libavcodec/nvenc.c b/libavcodec/nvenc.c
index 421ea79c62..f6f756fe00 100644
--- a/libavcodec/nvenc.c
+++ b/libavcodec/nvenc.c
@@ -724,10 +724,50 @@ static av_cold void nvenc_setup_rate_control(AVCodecContext *avctx)
         ctx->encode_config.rcParams.vbvBufferSize = 2 * ctx->encode_config.rcParams.averageBitRate;
     }
 
-    if (ctx->rc_lookahead > 0) {
-        ctx->encode_config.rcParams.enableLookahead = 1;
-        ctx->encode_config.rcParams.lookaheadDepth = FFMIN(ctx->rc_lookahead, 32);
+    if (ctx->aq) {
+        ctx->encode_config.rcParams.enableAQ   = 1;
+        ctx->encode_config.rcParams.aqStrength = ctx->aq_strength;
+        av_log(avctx, AV_LOG_VERBOSE, "AQ enabled.\n");
     }
+
+    if (ctx->temporal_aq) {
+        ctx->encode_config.rcParams.enableTemporalAQ = 1;
+        av_log(avctx, AV_LOG_VERBOSE, "Temporal AQ enabled.\n");
+    }
+
+    if (ctx->rc_lookahead) {
+        int lkd_bound = FFMIN(ctx->nb_surfaces, ctx->async_depth) -
+                        ctx->encode_config.frameIntervalP - 4;
+
+        if (lkd_bound < 0) {
+            av_log(avctx, AV_LOG_WARNING,
+                   "Lookahead not enabled. Increase buffer delay (-delay).\n");
+        } else {
+            ctx->encode_config.rcParams.enableLookahead = 1;
+            ctx->encode_config.rcParams.lookaheadDepth  = av_clip(ctx->rc_lookahead, 0, lkd_bound);
+            ctx->encode_config.rcParams.disableIadapt   = ctx->no_scenecut;
+            ctx->encode_config.rcParams.disableBadapt   = !ctx->b_adapt;
+            av_log(avctx, AV_LOG_VERBOSE,
+                   "Lookahead enabled: depth %d, scenecut %s, B-adapt %s.\n",
+                   ctx->encode_config.rcParams.lookaheadDepth,
+                   ctx->encode_config.rcParams.disableIadapt ? "disabled" : "enabled",
+                   ctx->encode_config.rcParams.disableBadapt ? "disabled" : "enabled");
+        }
+    }
+
+    if (ctx->strict_gop) {
+        ctx->encode_config.rcParams.strictGOPTarget = 1;
+        av_log(avctx, AV_LOG_VERBOSE, "Strict GOP target enabled.\n");
+    }
+
+    if (ctx->nonref_p)
+        ctx->encode_config.rcParams.enableNonRefP = 1;
+
+    if (ctx->zerolatency)
+        ctx->encode_config.rcParams.zeroReorderDelay = 1;
+
+    if (ctx->quality)
+        ctx->encode_config.rcParams.targetQuality = ctx->quality;
 }
 
 static av_cold int nvenc_setup_h264_config(AVCodecContext *avctx)