nvenc: Add some easier to understand presets that match x264 terminology

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

libavcodec/nvenc.c

@@ -459,8 +459,10 @@ typedef struct GUIDTuple {
     int flags;
 } GUIDTuple;
 
-#define PRESET(name, ...) \
-    [PRESET_ ## name] = { NV_ENC_PRESET_ ## name ## _GUID, __VA_ARGS__ }
+#define PRESET_ALIAS(alias, name, ...) \
+    [PRESET_ ## alias] = { NV_ENC_PRESET_ ## name ## _GUID, __VA_ARGS__ }
+
+#define PRESET(name, ...) PRESET_ALIAS(name, name, __VA_ARGS__)
 
 static int nvec_map_preset(NVENCContext *ctx)
 {
@@ -474,6 +476,9 @@ static int nvec_map_preset(NVENCContext *ctx)
         PRESET(LOW_LATENCY_HQ,      NVENC_LOWLATENCY),
         PRESET(LOSSLESS_DEFAULT,    NVENC_LOSSLESS),
         PRESET(LOSSLESS_HP,         NVENC_LOSSLESS),
+        PRESET_ALIAS(SLOW, HQ,      NVENC_TWO_PASSES),
+        PRESET_ALIAS(MEDIUM, HQ,    NVENC_ONE_PASS),
+        PRESET_ALIAS(FAST, HP,      NVENC_ONE_PASS),
         { { 0 } }
     };
 
@@ -486,6 +491,7 @@ static int nvec_map_preset(NVENCContext *ctx)
 }
 
 #undef PRESET
+#undef PRESET_ALIAS
 
 static void set_constqp(AVCodecContext *avctx, NV_ENC_RC_PARAMS *rc)
 {

libavcodec/nvenc.h

@@ -91,6 +91,9 @@ typedef struct NVENCLibraryContext
 
 enum {
     PRESET_DEFAULT,
+    PRESET_SLOW,
+    PRESET_MEDIUM,
+    PRESET_FAST,
     PRESET_HP,
     PRESET_HQ,
     PRESET_BD ,
@@ -111,7 +114,9 @@ enum {
 
 enum {
     NVENC_LOWLATENCY = 1,
-    NVENC_LOSSLESS,
+    NVENC_LOSSLESS   = 2,
+    NVENC_ONE_PASS   = 4,
+    NVENC_TWO_PASSES = 8,
 };
 
 enum {

libavcodec/nvenc_h264.c

@@ -27,8 +27,11 @@
 #define OFFSET(x) offsetof(NVENCContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
-    { "preset",   "Set the encoding preset",              OFFSET(preset),      AV_OPT_TYPE_INT,    { .i64 = PRESET_HQ }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },
+    { "preset",   "Set the encoding preset",              OFFSET(preset),      AV_OPT_TYPE_INT,    { .i64 = PRESET_MEDIUM }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },
     { "default",    "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_DEFAULT }, 0, 0, VE, "preset" },
+    { "slow",       "hq 2 passes",                        0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_SLOW }, 0, 0, VE, "preset" },
+    { "medium",     "hq 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_MEDIUM }, 0, 0, VE, "preset" },
+    { "fast",       "hp 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_FAST }, 0, 0, VE, "preset" },
     { "hp",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HP }, 0, 0, VE, "preset" },
     { "hq",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HQ }, 0, 0, VE, "preset" },
     { "bd",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_BD }, 0, 0, VE, "preset" },

libavcodec/nvenc_hevc.c

@@ -27,8 +27,11 @@
 #define OFFSET(x) offsetof(NVENCContext, x)
 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM
 static const AVOption options[] = {
-    { "preset",   "Set the encoding preset",              OFFSET(preset),      AV_OPT_TYPE_INT,    { .i64 = PRESET_HQ }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },
+    { "preset",   "Set the encoding preset",              OFFSET(preset),      AV_OPT_TYPE_INT,    { .i64 = PRESET_MEDIUM }, PRESET_DEFAULT, PRESET_LOSSLESS_HP, VE, "preset" },
     { "default",    "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_DEFAULT }, 0, 0, VE, "preset" },
+    { "slow",       "hq 2 passes",                        0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_SLOW }, 0, 0, VE, "preset" },
+    { "medium",     "hq 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_MEDIUM }, 0, 0, VE, "preset" },
+    { "fast",       "hp 1 pass",                          0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_FAST }, 0, 0, VE, "preset" },
     { "hp",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HP }, 0, 0, VE, "preset" },
     { "hq",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_HQ }, 0, 0, VE, "preset" },
     { "bd",         "",                                   0,                   AV_OPT_TYPE_CONST,  { .i64 = PRESET_BD }, 0, 0, VE, "preset" },