Enable decoding AVC (H.264) codec by default and enable CTest for it (#309)

[ROCm/rocdecode commit: 2d877cd357]

projects/rocdecode/src/parser/rocparser_api.cpp

@@ -34,12 +34,11 @@ rocDecCreateVideoParser(RocdecVideoParser *parser_handle, RocdecParserParams *pa
         return ROCDEC_INVALID_PARAMETER;
     }
 
-    const char *is_avc_enabled = std::getenv("ROCDECODE_ENABLE_AVC");
     const char *is_av1_enabled = std::getenv("ROCDECODE_ENABLE_AV1");
     if (parser_params->codec_type != rocDecVideoCodec_HEVC &&
-        (parser_params->codec_type == rocDecVideoCodec_AVC && (is_avc_enabled == nullptr || std::string(is_avc_enabled) != "1")) &&
+        parser_params->codec_type != rocDecVideoCodec_AVC &&
         (parser_params->codec_type == rocDecVideoCodec_AV1 && (is_av1_enabled == nullptr || std::string(is_av1_enabled) != "1"))) {
-        ERR("The current version of rocDecode officially supports only the H.265 (HEVC) codec.");
+        ERR("The current version of rocDecode officially supports only the H.265 (HEVC) and H.264 (AVC) codec.");
         return ROCDEC_NOT_IMPLEMENTED;
     }