AV1: Added 12-bit AV1 decode support. (#631)

* * rocDecode/AV1: Added 12-bit AV1 decode support.
 - The feature is only enabled for VAAPI version 1.23.0 and up.
 - Added MD5 calculation for 12-bit video output.

* * rocDecode: Bumped version up to 1.2.0 and updated change log.

* * rocDecode: Updated change log based on review.

src/rocdecode/vaapi/vaapi_videodecoder.cpp

@@ -395,7 +395,14 @@ rocDecStatus VaapiVideoDecoder::CreateDecoderConfig() {
             }
             break;
         case rocDecVideoCodec_AV1:
-            va_profile_ = VAProfileAV1Profile0;
+#if VA_CHECK_VERSION(1, 23, 0)
+            if (decoder_create_info_.bit_depth_minus_8 == 4) {
+                va_profile_ = VAProfileAV1Profile2;
+            } else
+#endif
+            {
+                va_profile_ = VAProfileAV1Profile0;
+            }
             break;
         default:
             ERR("The codec type is not supported.");
@@ -649,7 +656,14 @@ rocDecStatus VaContext::CheckDecCapForCodecType(RocdecDecodeCaps *dec_cap) {
             break;
         }
         case rocDecVideoCodec_AV1: {
-            va_profile = VAProfileAV1Profile0;
+#if VA_CHECK_VERSION(1, 23, 0)
+            if (dec_cap->bit_depth_minus_8 == 4) {
+                va_profile = VAProfileAV1Profile2;
+            } else
+#endif
+            {
+                va_profile = VAProfileAV1Profile0;
+            }
             break;
         }
         default: {