avcodec/videotoolboxenc: add H264 Extended profile and level

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: Rick Kern <kernrj@gmail.com>

libavcodec/videotoolboxenc.c

@@ -80,6 +80,8 @@ static struct{
     CFStringRef kVTProfileLevel_H264_High_5_1;
     CFStringRef kVTProfileLevel_H264_High_5_2;
     CFStringRef kVTProfileLevel_H264_High_AutoLevel;
+    CFStringRef kVTProfileLevel_H264_Extended_5_0;
+    CFStringRef kVTProfileLevel_H264_Extended_AutoLevel;
 
     CFStringRef kVTProfileLevel_HEVC_Main_AutoLevel;
     CFStringRef kVTProfileLevel_HEVC_Main10_AutoLevel;
@@ -137,6 +139,8 @@ static void loadVTEncSymbols(){
     GET_SYM(kVTProfileLevel_H264_High_5_1,           "H264_High_5_1");
     GET_SYM(kVTProfileLevel_H264_High_5_2,           "H264_High_5_2");
     GET_SYM(kVTProfileLevel_H264_High_AutoLevel,     "H264_High_AutoLevel");
+    GET_SYM(kVTProfileLevel_H264_Extended_5_0,       "H264_Extended_5_0");
+    GET_SYM(kVTProfileLevel_H264_Extended_AutoLevel, "H264_Extended_AutoLevel");
 
     GET_SYM(kVTProfileLevel_HEVC_Main_AutoLevel,     "HEVC_Main_AutoLevel");
     GET_SYM(kVTProfileLevel_HEVC_Main10_AutoLevel,   "HEVC_Main10_AutoLevel");
@@ -154,6 +158,7 @@ typedef enum VT_H264Profile {
     H264_PROF_BASELINE,
     H264_PROF_MAIN,
     H264_PROF_HIGH,
+    H264_PROF_EXTENDED,
     H264_PROF_COUNT
 } VT_H264Profile;
 
@@ -708,6 +713,14 @@ static bool get_vt_h264_profile_level(AVCodecContext *avctx,
                                   compat_keys.kVTProfileLevel_H264_High_5_2;       break;
             }
             break;
+        case H264_PROF_EXTENDED:
+            switch (vtctx->level) {
+                case  0: *profile_level_val =
+                                  compat_keys.kVTProfileLevel_H264_Extended_AutoLevel; break;
+                case 50: *profile_level_val =
+                                  compat_keys.kVTProfileLevel_H264_Extended_5_0;       break;
+            }
+            break;
     }
 
     if (!*profile_level_val) {
@@ -2535,6 +2548,7 @@ static const AVOption h264_options[] = {
     { "baseline", "Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_BASELINE }, INT_MIN, INT_MAX, VE, "profile" },
     { "main",     "Main Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_MAIN     }, INT_MIN, INT_MAX, VE, "profile" },
     { "high",     "High Profile",     0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_HIGH     }, INT_MIN, INT_MAX, VE, "profile" },
+    { "extended", "Extend Profile",   0, AV_OPT_TYPE_CONST, { .i64 = H264_PROF_EXTENDED }, INT_MIN, INT_MAX, VE, "profile" },
 
     { "level", "Level", OFFSET(level), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 52, VE, "level" },
     { "1.3", "Level 1.3, only available with Baseline Profile", 0, AV_OPT_TYPE_CONST, { .i64 = 13 }, INT_MIN, INT_MAX, VE, "level" },