avcodec/nvenc: Add bluray_compat basic implementation

Signed-off-by: Timo Rothenpieler <timo@rothenpieler.org>

libavcodec/nvenc.c

@@ -958,6 +958,21 @@ static av_cold int nvenc_setup_encoder(AVCodecContext *avctx)
     ctx->init_encode_params.enableEncodeAsync = 0;
     ctx->init_encode_params.enablePTD = 1;
 
+    if (ctx->bluray_compat) {
+        ctx->aud = 1;
+        avctx->refs = FFMIN(FFMAX(avctx->refs, 0), 6);
+        avctx->max_b_frames = FFMIN(avctx->max_b_frames, 3);
+        switch (avctx->codec->id) {
+        case AV_CODEC_ID_H264:
+            /* maximum level depends on used resolution */
+            break;
+        case AV_CODEC_ID_HEVC:
+            ctx->level = NV_ENC_LEVEL_HEVC_51;
+            ctx->tier = NV_ENC_TIER_HEVC_HIGH;
+            break;
+        }
+    }
+
     if (avctx->gop_size > 0) {
         if (avctx->max_b_frames >= 0) {
             /* 0 is intra-only, 1 is I/P only, 2 is one B-Frame, 3 two B-frames, and so on. */

libavcodec/nvenc.h

@@ -154,6 +154,7 @@ typedef struct NvencContext
     int aq_strength;
     int quality;
     int aud;
+    int bluray_compat;
 } NvencContext;
 
 int ff_nvenc_encode_init(AVCodecContext *avctx);

libavcodec/nvenc_h264.c

@@ -108,6 +108,7 @@ static const AVOption options[] = {
     { "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 },
     { "aud",          "Use access unit delimiters",         OFFSET(aud),          AV_OPT_TYPE_BOOL,  { .i64 = 0 }, 0, 1, VE },
+    { "bluray-compat", "Bluray compatibility workarounds",  OFFSET(bluray_compat),AV_OPT_TYPE_BOOL,  { .i64 = 0 }, 0, 1, VE },
     { NULL }
 };
 

libavcodec/nvenc_hevc.c

@@ -105,6 +105,7 @@ static const AVOption options[] = {
     { "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 },
     { "aud",          "Use access unit delimiters",         OFFSET(aud),          AV_OPT_TYPE_BOOL,  { .i64 = 0 }, 0, 1, VE },
+    { "bluray-compat", "Bluray compatibility workarounds",  OFFSET(bluray_compat),AV_OPT_TYPE_BOOL,  { .i64 = 0 }, 0, 1, VE },
     { NULL }
 };
 

libavcodec/version.h

@@ -29,7 +29,7 @@
 
 #define LIBAVCODEC_VERSION_MAJOR  57
 #define LIBAVCODEC_VERSION_MINOR  70
-#define LIBAVCODEC_VERSION_MICRO 100
+#define LIBAVCODEC_VERSION_MICRO 101
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
                                                LIBAVCODEC_VERSION_MINOR, \