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

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Signed-off-by: Diego Biurrun <diego@biurrun.de>

libavcodec/nvenc.c

@@ -610,6 +610,53 @@ static void nvenc_setup_rate_control(AVCodecContext *avctx)
 
     if (rc->averageBitRate > 0)
         avctx->bit_rate = rc->averageBitRate;
+
+#if NVENCAPI_MAJOR_VERSION >= 7
+    if (ctx->aq) {
+        ctx->config.rcParams.enableAQ   = 1;
+        ctx->config.rcParams.aqStrength = ctx->aq_strength;
+        av_log(avctx, AV_LOG_VERBOSE, "AQ enabled.\n");
+    }
+
+    if (ctx->temporal_aq) {
+        ctx->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->config.frameIntervalP - 4;
+
+        if (lkd_bound < 0) {
+            av_log(avctx, AV_LOG_WARNING,
+                   "Lookahead not enabled. Increase buffer delay (-delay).\n");
+        } else {
+            ctx->config.rcParams.enableLookahead = 1;
+            ctx->config.rcParams.lookaheadDepth  = av_clip(ctx->rc_lookahead, 0, lkd_bound);
+            ctx->config.rcParams.disableIadapt   = ctx->no_scenecut;
+            ctx->config.rcParams.disableBadapt   = !ctx->b_adapt;
+            av_log(avctx, AV_LOG_VERBOSE,
+                   "Lookahead enabled: depth %d, scenecut %s, B-adapt %s.\n",
+                   ctx->config.rcParams.lookaheadDepth,
+                   ctx->config.rcParams.disableIadapt ? "disabled" : "enabled",
+                   ctx->config.rcParams.disableBadapt ? "disabled" : "enabled");
+        }
+    }
+
+    if (ctx->strict_gop) {
+        ctx->config.rcParams.strictGOPTarget = 1;
+        av_log(avctx, AV_LOG_VERBOSE, "Strict GOP target enabled.\n");
+    }
+
+    if (ctx->nonref_p)
+        ctx->config.rcParams.enableNonRefP = 1;
+
+    if (ctx->zerolatency)
+        ctx->config.rcParams.zeroReorderDelay = 1;
+
+    if (ctx->quality)
+        ctx->config.rcParams.targetQuality = ctx->quality;
+#endif /* NVENCAPI_MAJOR_VERSION >= 7 */
 }
 
 static int nvenc_setup_h264_config(AVCodecContext *avctx)

libavcodec/nvenc.h

@@ -171,6 +171,16 @@ typedef struct NVENCContext {
     int device;
     int flags;
     int async_depth;
+    int rc_lookahead;
+    int aq;
+    int no_scenecut;
+    int b_adapt;
+    int temporal_aq;
+    int zerolatency;
+    int nonref_p;
+    int strict_gop;
+    int aq_strength;
+    int quality;
 } NVENCContext;
 
 int ff_nvenc_encode_init(AVCodecContext *avctx);

libavcodec/nvenc_h264.c

@@ -77,6 +77,18 @@ static const AVOption options[] = {
     { "list",     "List the available devices",           0,                   AV_OPT_TYPE_CONST,  { .i64 = LIST_DEVICES },         0, 0, VE, "device" },
     { "async_depth", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
     { "delay",       "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
+#if NVENCAPI_MAJOR_VERSION >= 7
+    { "rc-lookahead", "Number of frames to look ahead for rate-control", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
+    { "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts", OFFSET(no_scenecut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "b_adapt", "When lookahead is enabled, set this to 0 to disable adaptive B-frame decision", OFFSET(b_adapt), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, VE },
+    { "spatial-aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "temporal-aq", "set to 1 to enable Temporal AQ",     OFFSET(temporal_aq),  AV_OPT_TYPE_INT,   { .i64 = 0                       }, 0, 1, VE        },
+    { "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)", OFFSET(zerolatency), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames", OFFSET(nonref_p), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations", OFFSET(strict_gop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)", OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
+    { "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
+#endif /* NVENCAPI_MAJOR_VERSION >= 7 */
     { NULL }
 };
 

libavcodec/nvenc_hevc.c

@@ -77,6 +77,16 @@ static const AVOption options[] = {
     { "list",     "List the available devices",           0,                   AV_OPT_TYPE_CONST,  { .i64 = LIST_DEVICES },         0, 0, VE, "device" },
     { "async_depth", "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
     { "delay",       "Delay frame output by the given amount of frames", OFFSET(async_depth), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 0, INT_MAX, VE },
+#if NVENCAPI_MAJOR_VERSION >= 7
+    { "rc-lookahead", "Number of frames to look ahead for rate-control", OFFSET(rc_lookahead), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, VE },
+    { "no-scenecut", "When lookahead is enabled, set this to 1 to disable adaptive I-frame insertion at scene cuts", OFFSET(no_scenecut), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "spatial_aq", "set to 1 to enable Spatial AQ", OFFSET(aq), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "zerolatency", "Set 1 to indicate zero latency operation (no reordering delay)", OFFSET(zerolatency), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "nonref_p", "Set this to 1 to enable automatic insertion of non-reference P-frames", OFFSET(nonref_p), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "strict_gop", "Set 1 to minimize GOP-to-GOP rate fluctuations", OFFSET(strict_gop), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },
+    { "aq-strength", "When Spatial AQ is enabled, this field is used to specify AQ strength. AQ strength scale is from 1 (low) - 15 (aggressive)", OFFSET(aq_strength), AV_OPT_TYPE_INT, { .i64 = 8 }, 1, 15, VE },
+    { "cq", "Set target quality level (0 to 51, 0 means automatic) for constant quality mode in VBR rate control", OFFSET(quality), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 51, VE },
+#endif /* NVENCAPI_MAJOR_VERSION >= 7 */
     { NULL }
 };
 

libavcodec/version.h

@@ -29,7 +29,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR 57
 #define LIBAVCODEC_VERSION_MINOR 27
-#define LIBAVCODEC_VERSION_MICRO  0
+#define LIBAVCODEC_VERSION_MICRO  1
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \